Journal articles: 'Pushover analysis'

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Alıcı, F. Soner, and HalÛk Sucuoğlu. "Practical Implementation of Generalized Force Vectors for the Multimodal Pushover Analysis of Building Structures." Earthquake Spectra 31, no. 2 (May 2015): 1043–67. http://dx.doi.org/10.1193/102412eqs316m.

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A practical implementation of generalized multimodal pushover analysis is presented in this study, where the number of pushovers is reduced significantly in view of the number of modes contributing to seismic response. It has been demonstrated in two case studies that the reduced procedure for generalized push-over analysis is equally successful in estimating the maximum member deformations and forces under a ground excitation with reference to nonlinear response history analysis. It is further shown that the results obtained by using the mean spectrum of a set of ground motions are almost identical to the mean of the results obtained from separate generalized pushover analyses. These results are also very close to the mean results of the nonlinear response history analyses, hence motivating the implementation of generalized pushover analysis with design spectrum.

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Goel, Rakesh K., and Anil K. Chopra. "Role of Higher-“Mode” Pushover Analyses in Seismic Analysis of Buildings." Earthquake Spectra 21, no. 4 (November 2005): 1027–41. http://dx.doi.org/10.1193/1.2085189.

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The role of higher-“mode” pushover analyses in seismic analysis of buildings is examined in this paper. It is demonstrated that the higher-“mode” pushover curves reveal plastic hinge mechanisms that are not detected by the first-“mode” or other FEMA-356 force distributions, but these purely local mechanisms are not likely to develop during realistic ground motions in an otherwise regular building without a soft and/or weak story. Furthermore, the conditions necessary for “reversal” of a higher-“mode” pushover curve are examined. It is shown that “reversal” in a higher-“mode” pushover curve occurs after formation of a mechanism if the resultant force above the bottom of the mechanism is in the direction that moves the roof in a direction opposite to that prior to formation of the mechanism. Such “reversal” can occur only in higher-“mode” pushover analyses but not in the pushover analyses for the first-“mode” or other FEMA-356 force distributions. However, the “reversal” in higher-“mode” pushover curves was found to be very rare in several recent investigations that examined behavior of many moment-resisting frame buildings. Included are guidelines for implementing the Modal Pushover Analysis for buildings that display “reversal” in a higher-“mode” pushover curve.

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Azimi, Hossein, Khaled Galal, and Oskar A. Pekau. "Incremental modified pushover analysis." Structural Design of Tall and Special Buildings 18, no. 8 (December 2009): 839–59. http://dx.doi.org/10.1002/tal.465.

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Ferraioli, Massimiliano, Angelo Lavino, and Alberto Mandara. "Multi-Mode Pushover Procedure to Estimate Higher Modes Effects on Seismic Inelastic Response of Steel Moment-Resisting Frames." Key Engineering Materials 763 (February 2018): 82–89. http://dx.doi.org/10.4028/www.scientific.net/kem.763.82.

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The paper deals with a multi-mode pushover procedure that considers higher mode effects, frequency content of response spectra as well as nonlinear interaction between modes. Pushover analyses are conducted with story-specific generalized force vectors. Each force vector is calculated through modal analysis and builds up the instantaneous distribution of forces acting on the structure when the interstory drift at each story attains its maximum value during the seismic motion. In order to improve the computational cost effectiveness, both mode truncation and limitation in the number of generalized pushovers are used by checking, however, the accuracy in the evaluation of the interstory drifts at all levels. The target interstory drift is calculated through three different modal combination procedures.

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Sheth, Rutvik, Jayesh Prajapati, and Devesh Soni. "Comparative study nonlinear static pushover analysis and displacement based adaptive pushover analysis method." International Journal of Structural Engineering 9, no. 1 (2018): 81. http://dx.doi.org/10.1504/ijstructe.2018.090753.

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Bergami, Alessandro Vittorio, Liu Xu, and Camillo Nuti. "Proposal of a Modal Pushover Based Incremental Analysis." Applied Mechanics and Materials 847 (July 2016): 333–38. http://dx.doi.org/10.4028/www.scientific.net/amm.847.333.

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Existing reinforced concrete frame buildings designed for vertical load only could suffer severe damage during earthquakes. In recent years, many research activities have been paid to develop reliable and practical analysis procedure to identify the safety level of existing structures. The research discussed in this paper deals with proposal of an efficient incremental procedure to estimate seismic capacity of irregular structures performing few pushover analysis (one for every relevant modal shape) and applying a series of Modal Pushover Analysis (MPA). This approach, similar to the Incremental Dynamic Analysis (IDA), replaces the Nonlinear Response History Analyses (NL_RHA) by simple pushover analyses. In this work, this idea, named IMPA (Incremental Modal Pushover Analysis), is proposed for a 3D complex building and this application is described and discussed.

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Dutta, Sekhar Chandra, Anusrita Raychaudhuri, Suvonkar Chakroborty, and Rana Roy. "Pushover Analysis: Proposals for Modification." Structural Engineering International 19, no. 3 (August 2009): 249–55. http://dx.doi.org/10.2749/101686609788957810.

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Soni, Devesh, Jayesh Prajapati, and Rutvik Sheth. "Comparative study of nonlinear static pushover analysis and displacement based adaptive pushover analysis method." International Journal of Structural Engineering 9, no. 1 (2018): 1. http://dx.doi.org/10.1504/ijstructe.2018.10009092.

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Sahraei, Arash, and Farhad Behnamfar. "A Drift Pushover Analysis Procedure for Estimating the Seismic Demands of Buildings." Earthquake Spectra 30, no. 4 (November 2014): 1601–18. http://dx.doi.org/10.1193/030811eqs038m.

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Relative displacement is a parameter that has a very high correlation with damage. The objective of this article is to develop an analysis procedure founded on the displacement-based seismic design methodology. Generalized interstory drift spectrum is applied as an essential tool in this new method called drift pushover analysis. In order to evaluate the behavior of structures, three demand parameters—lateral displacement, story shear, and plastic hinge rotation—are computed with conventional pushover analysis (CPA), modal pushover analysis (MPA), and drift pushover analysis (DPA), and are compared with those of the nonlinear time history analysis (NTA). It is observed that the new method, DPA, predicts the peak response measures more precisely and with less effort than the other nonlinear pushover procedures investigated in this study.

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Fujii, Kenji, Yoshiyuki Mogi, and Takumi Noguchi. "Predicting Maximum and Cumulative Response of A Base-isolated Building Using Pushover Analysis." Buildings 10, no. 5 (May 11, 2020): 91. http://dx.doi.org/10.3390/buildings10050091.

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The evaluation of the maximum and cumulative response is an important issue for the seismic design of new base-isolated buildings. This study predicts the maximum and cumulative response of a 14-story reinforced concrete base-isolated building using a set of pushover analyses. In the proposed pushover analysis method, the maximum and cumulative responses of the first and higher modes are evaluated from the nonlinear analysis of equivalent single-degree-of-freedom (SDOF) models. Then, the maximum local responses are predicted by enveloping the two pushover analysis results by referring to the contribution of the first and higher modal responses, while the cumulative strain energies of the lead-rubber bearings and steel dampers are predicted from the cumulative response of the first mode. The results reveal that the responses predicted by the proposed set of pushover analyses have satisfactory accuracy.

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Chen, Xing Ye, and Xue Song Tang. "Pushover Analysis and Dynamic Response under Earthquake for a Continuous Rigid Frame Bridge." Applied Mechanics and Materials 94-96 (September 2011): 983–88. http://dx.doi.org/10.4028/www.scientific.net/amm.94-96.983.

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Abstract. Based on the concept of energy design, pushover analysis and elastoplastic dynamic response have been made under the earthquake. It is seen that the loading mode plays an important role in the pushover analysis. The loads in the pushover analysis distribute along the height of the structure that should reflect the distribution of the inertial forces under the earthquake so that the calculated displacements have a good accuracy in contrast to the real displacements. Only in such a way, the result by pushover analysis method is credible. On the other hand, it is found that the high order vibration modes can not be neglected in the pushover analysis for a continuous rigid frame bridges with long span and high piers. However, the bridge design codes have not told how to consider the effect of high order vibration modes. A simplified loading mode is then proposed in this work. A contribution ratio of vibration mode is defined to indicate whether the vibration mode should be considered or not in the pushover analysis. The proposed loading mode is applied to a real continuous rigid frame bridge with large span and high piers. The dynamic response and aseismatic property are evaluated and discussed. In addition, the results by pushover analysis are compared to the results by non-linear time-history analysis. The result shows that the high order vibrational modes indeed have a pronounced influence on the result. The proposed loading mode can give a reasonable result.

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Zhang, Min, Si Feng Qin, and Li Song. "Seismic Performance Evaluation of Large Span Cable-Stayed Bridges." Applied Mechanics and Materials 477-478 (December 2013): 1029–33. http://dx.doi.org/10.4028/www.scientific.net/amm.477-478.1029.

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This paper focuses on the performance evaluation of long span cable-stayed bridge. Pushover method has been compared with RHA method to verify its validity. A specific bridge has been calculated by pushover analysis method using several different lateral load patterns. With four typical seismic analysis methods on the structure, the pushover analysis capacity curves have been compared with the RHA’s. It is demonstrated that the pushover method is accurate enough to be used in Engineering.

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Ariyana, Kunwer Fahmed Alam. "Performannce Base Analysis of Multy Storied Building." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (August 31, 2021): 2053–62. http://dx.doi.org/10.22214/ijraset.2021.37722.

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Abstract: In India multistoried buildings are widely designed with the method suggested by Indian Standard IS1893: Part-1:2016, Criteria for the Earthquake resistance design of the structures: General Provision and Buildings for the calculation of equivalent horizontal load generated during earthquake. Response Spectrum method is widely used for the multistoried buildings with base shear scaled to get the equal value as calculated with the time period obtained by the empirical formula of time period of the buildings. The approach of the dynamic analysis is basically a linear approach. In this scenario we are totally relying on ductility of the structure. The concept for performing the Pushover Analysis is to analyze a structure with non linear approach and to find the behavior of structure beyond its ductile limit. Pushover analysis can help to demonstrate how progressive failure in building really occurs and to identify the mode of final failure of the buildings. Pushover analysis is commonly used to evaluate the seismic capacity of existing structures and appears in several recent guidelines for retrofit seismic design. It can also be useful for performance-based design of new buildings that rely on ductility or redundancies to resist earthquake forces. So basically Pushover analysis is non linear approach to estimate the strength capacity of the structure beyond Limit State. In this analysis we can predicts the weak areas in the building and keeping track of the sequence of damages of each and every member in the building/structure, thus can be performed for existing structure and also for performance base design, similarly for progressive collapse analysis. The approach is easy to understand, when we designed or analyze a moment resisting frame as per IS 1893:2016 by Response Spectrum method with response spectrum method with the response reduction factor 5 i.e. R=5, we are basically designing the structure with 1/5th horizontal load (calculated with the empirical formula given in IS 1893:2016), the rest 4/5th load is basically taken care by the ductile behavior of the building. The ductile detailing suggested by the 13920:2016 will resist the full impact of seismic load without collapse. The distribution and impact of the full horizontal load can be analyzed with the non linear approach, and pushover analysis is one of them. METHODLOGY: A pushover analysis is performed by subjecting a structure to a monotonically increasing pattern of lateral loads, representing the inertial forces which would be experienced by the structure when subjected to ground shaking. Under incrementally increasing loads various structural elements may yield sequentially. Consequently, at each event, the structure experiences a loss in stiffness. Using a pushover analysis, a characteristic non linear force displacement relationship can be determined. Key elements of the pushover analysis 1) Definition of plastic hinges, it includes hinges for uncoupled moment, hinges for uncoupled axial load, hinges for uncoupled shear force, hinges for coupled axial force and hinges for biaxial bending moment. 2) Definition for control node, the node used to monitor the displacement of the structures. Pushover curve is obtained from the displacement verses base shear. 3) Developing the pushover curve which includes the elevation of the forces distribution 4) Estimation of the displacement demand. 5) Evaluation of performance level for the structure

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Zheng, Zhi, Changhai Zhai, Xu Bao, and Xiaolan Pan. "Seismic capacity estimation of a reinforced concrete containment building considering bidirectional cyclic effect." Advances in Structural Engineering 22, no. 5 (October 25, 2018): 1106–20. http://dx.doi.org/10.1177/1369433218806034.

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This study serves to estimate the seismic capacity of the reinforced concrete containment building considering its bidirectional cyclic effect and variations of energy. The implementation of the capacity estimation has been performed by extending two well-known methods: nonlinear static pushover and incremental dynamic analysis. The displacement and dissipated energy demands are obtained from the static pushover analysis considering bidirectional cyclic effect. In total, 18 bidirectional earthquake intensity parameters are developed to perform the incremental dynamic analysis for the reinforced concrete containment building. Results show that the bidirectional static pushover analysis tends to decrease the capacity of the reinforced concrete containment building in comparison with unidirectional static pushover analysis. The 5% damped first-mode geometric mean spectral acceleration strongly correlates with the maximum top displacement of the containment building. The comparison of the incremental dynamic analysis and static pushover curves is employed to determine the seismic capacity of the reinforced concrete containment building. It is concluded that bidirectional static pushover and incremental dynamic analysis studies can be used in performance evaluation and capacity estimation of reinforced concrete containment buildings under bidirectional earthquake excitations.

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Mortezaei, A., and H. R. Ronagh. "Effectiveness of modified pushover analysis procedure for the estimation of seismic demands of buildings subjected to near-fault ground motions having fling step." Natural Hazards and Earth System Sciences 13, no. 6 (June 19, 2013): 1579–93. http://dx.doi.org/10.5194/nhess-13-1579-2013.

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Abstract. Near-fault ground motions with long-period pulses have been identified as being critical in the design of structures. These motions, which have caused severe damage in recent disastrous earthquakes, are characterized by a short-duration impulsive motion that transmits large amounts of energy into the structures at the beginning of the earthquake. In nearly all of the past near-fault earthquakes, significant higher mode contributions have been evident in building structures near the fault rupture, resulting in the migration of dynamic demands (i.e. drifts) from the lower to the upper stories. Due to this, the static nonlinear pushover analysis (which utilizes a load pattern proportional to the shape of the fundamental mode of vibration) may not produce accurate results when used in the analysis of structures subjected to near-fault ground motions. The objective of this paper is to improve the accuracy of the pushover method in these situations by introducing a new load pattern into the common pushover procedure. Several pushover analyses are performed for six existing reinforced concrete buildings that possess a variety of natural periods. Then, a comparison is made between the pushover analyses' results (with four new load patterns) and those of FEMA (Federal Emergency Management Agency)-356 with reference to nonlinear dynamic time-history analyses. The comparison shows that, generally, the proposed pushover method yields better results than all FEMA-356 pushover analysis procedures for all investigated response quantities and is a closer match to the nonlinear time-history responses. In general, the method is able to reproduce the essential response features providing a reasonable measure of the likely contribution of higher modes in all phases of the response.

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Bergami, Alessandro Vittorio, Gabriele Fiorentino, Davide Lavorato, Bruno Briseghella, and Camillo Nuti. "Application of the Incremental Modal Pushover Analysis to Bridges Subjected to Near-Fault Ground Motions." Applied Sciences 10, no. 19 (September 26, 2020): 6738. http://dx.doi.org/10.3390/app10196738.

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Near-fault events can cause severe damage to civil structures, including bridges. Many studies have demonstrated that the seismic assessment is not straightforward. Usually, dealing with near-fault ground motion, the structural analysis is performed using Nonlinear Response-History Analysis (NRHA) but in the last years, many authors have tested existing pushover-based procedures originally developed and validated using far-field events. Between those procedures, the Incremental Modal Pushover Analysis (IMPAβ) is a pushover-based procedure specifically developed for bridges that, in this work, was applied to a case study considering near-fault pulse-like ground motion records. The records were analyzed and selected from the European Strong Motion Database. In the paper the results obtained with IMPAβ together with other standard pushover procedures, are compared with NRHA and incremental dynamic analyses; the vertical component of the motion has been also considered. Results obtained with the bridge case study demonstrate that the vertical seismic action has a minor influence on the structural response and that IMPAβ is confirmed as a very effective pushover-based method that can be applied also for near-fault events.

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Vafaei, Mohammadreza, Azlan bin Adnan, and Mohammadreza Yadollahi. "Seismic Damage Detection Using Pushover Analysis." Advanced Materials Research 255-260 (May 2011): 2496–99. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.2496.

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Inter-story drift ratio is a general damage index which is being used to detect damaged stories after severe ground motions. Since this general damage index cannot detect damaged elements also the severity of imposed damages on elements, a new real-time seismic damage detection method base on artificial neural networks was proposed to overcome this issue. This approach considers nonlinear behaviour of structures and not only is capable of detecting damaged elements but also can address the severity of imposed damages. Proposed algorithm was applied on a 3-story concrete building .The obtained results confirmed accuracy and robustness of this method.

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Crespi, Pietro, Alberto Franchi, and Nicola Giordano. "Multimodal Pushover Analysis for R.C. Bridges." Applied Mechanics and Materials 725-726 (January 2015): 888–95. http://dx.doi.org/10.4028/www.scientific.net/amm.725-726.888.

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In recent years, Italian technical-scientific community has increased its interest on the evaluation of the seismic response of existing structures. Among this wide range of structures, reinforced concrete bridges stand out for their strategic relevance and technical complexity. Most of these structures were built between 60ies and 70ies, according to design procedures which ignored nowadays knowledge in seismic engineering. Thus, the necessity to evaluate the real strength capacity of these structures with modern analysis techniques has become essential, leading to the determination of their safety level in case of an earthquake. In particular, for the assessment of several bridges of a motorway network, a multi-modal pushover analysis approach has been considered. This analysis technique allows considering the nonlinear behaviour and the complex dynamic response of such structures without exceeding in high computational costs. Some basic rules were defined (constitutive laws of materials, finite element type, plastic hinge models, etc.) for the modelling of bridges, in order to guarantee homogeneous comparable results among different structures of a network. At the end, some of the results are compared to see the variation of the verification level with respect to both the number of modes considered and the analysis’s accuracy in terms of number of loading steps.

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Parmar, Mohit K., Snehal V. Mevada, and Vishal B. Patel. "Pushover Analysis of Asymmetric Steel Buildings." International Journal of Civil Engineering 4, no. 6 (June 25, 2017): 31–36. http://dx.doi.org/10.14445/23488352/ijce-v4i6p105.

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Cimellaro, G. P., T. Giovine, and D. Lopez-Garcia. "Bidirectional Pushover Analysis of Irregular Structures." Journal of Structural Engineering 140, no. 9 (September 2014): 04014059. http://dx.doi.org/10.1061/(asce)st.1943-541x.0001032.

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Casalegno, C., and S. Russo. "Pushover Analysis of GFRP Pultruded Frames." Mechanics of Composite Materials 51, no. 5 (November 2015): 593–608. http://dx.doi.org/10.1007/s11029-015-9530-7.

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., D. N. Shinde. "PUSHOVER ANALYSIS OF MULTY STORY BUILDING." International Journal of Research in Engineering and Technology 03, no. 15 (May 25, 2014): 691–93. http://dx.doi.org/10.15623/ijret.2014.0315129.

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Jingjiang, Sun, Tetsuro Ono, Zhao Yangang, and Wang Wei. "Lateral load pattern in pushover analysis." Earthquake Engineering and Engineering Vibration 2, no. 1 (June 2003): 99–107. http://dx.doi.org/10.1007/bf02857542.

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Fujii. "Prediction of the Maximum Seismic Member Force in a Superstructure of a Base-Isolated Frame Building by using Pushover Analysis." Buildings 9, no. 9 (September 5, 2019): 201. http://dx.doi.org/10.3390/buildings9090201.

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It is essential for the seismic design of a base-isolated building that the seismic response of the superstructure remains within the elastic range. The evaluation of the maximum seismic member force in a superstructure is thus an important issue. The present study predicts the maximum seismic member force of five- and fourteen-story reinforced concrete base-isolated frame buildings adopting pushover analysis. In the first stage of the study, the nonlinear dynamic (time-history) analysis of the base-isolated frame buildings is carried out, and the nonlinear modal responses of the first and second modes are calculated from pushover analysis results. In the second stage, a set of pushover analyses is proposed considering the combination of the first and second modal responses, and predicted maximum member forces are compared with the nonlinear time-history analysis results. Results show that the maximum member forces predicted in the proposed set of pushover analyses are satisfactorily accurate, while the results predicted considering only the first mode are inaccurate.

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Bagu, Renuka Nageswari, and Sai Ganesh Sanagapalli. "Nonlinear Pushover Analysis of Multi-Storied Structure Using ETABS Software." International Journal of Research Publication and Reviews 4, no. 4 (April 23, 2023): 4186–90. http://dx.doi.org/10.55248/gengpi.4.423.37763.

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Jia, Li Zhe, and Zhong Dong Duan. "Convex Model for a New Lateral Load Pattern of Pushover Analysis." Advanced Materials Research 243-249 (May 2011): 4013–16. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4013.

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The uncertainties of earthquake currently were not considered with the various lateral load patterns of pushover. The convex set theory, which requires much less information, is employed to model the uncertainties of the seismic influence coefficient maximum and the characteristic period of response spectrum. Then the convex analysis method is integrated into the fundamental equation of pushover, and the analytic relationship of lateral seismic load and top displacement of buildings is derived. The results of numerical example shows that the new lateral load pattern of pushover proposed in this research may effective simulate the uncertainties of strong ground motion.

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Bergami, Alessandro Vittorio, Camillo Nuti, Davide Lavorato, Gabriele Fiorentino, and Bruno Briseghella. "IMPAβ: Incremental Modal Pushover Analysis for Bridges." Applied Sciences 10, no. 12 (June 22, 2020): 4287. http://dx.doi.org/10.3390/app10124287.

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In the present study, the incremental modal pushover analysis (IMPA), a pushover-based approach already proposed and applied to buildings by the same authors, was revised and proposed for bridges (IMPAβ). Pushover analysis considers the effects of higher modes on the structural response. Bridges are structurally very different from multi-story buildings, where multimodal pushover (MPA) has been developed and is currently used. In bridges, consideration for higher modes is often necessary: The responses of some structural elements of the bridge (e.g., piers) influence the overall bridge response. Therefore, the failure of these elements can determine the failure of the whole structure, even if they give a small contribution total base shear. Incremental dynamic analysis (IDA) requires input accelerograms for high intensities, which are rare in the databases, while scaling of generated accelerograms with a simple increment of the scaling acceleration is not appropriate. This fact renders IDA, which is by its nature time-consuming, not straightforward. On the contrary, the change of input spectrum required by IMPA is simple. IMPAβ also utilizes a simple complementary method coupled to MPA, to obtain bounds at very high seismic intensities. Finally, the two incremental methods based on static nonlinear and dynamic nonlinear analyses are compared.

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Patil, S. S., and S. S. Lonawat. "The Non Linear Static Pushover Analysis of RCC Frames." Asian Review of Civil Engineering 1, no. 1 (May 5, 2012): 25–29. http://dx.doi.org/10.51983/tarce-2012.1.1.2178.

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As the Developing countries move towards the implementation of Performance Based engineering philosophies in seismic design of civil structures, new seismic design provisions will require structural engineers to perform nonlinear analyses of the structures they are designing. These analyses can take the form of a full nonlinear dynamic analysis, or static nonlinear Pushover Analysis. Because of the computational time required to perform a full nonlinear dynamic analysis, the Pushover Analysis, if deemed applicable to the structure at hand, For this reason, there is a need for easy to use and accurate, nonlinear Pushover Analysis. The loads are increased until the peak response of the structure is obtained on a base shear Vs. roof displacement plot. From this plot, and other parameters representing the expected or design earthquake the maximum deformations the structure is likely to undergo during the design seismic event can be estimated.

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Aulia, Diana Fika, Ignatius Sudarsono, and Fauzia Mulyawati. "Evaluasi Kinerja Struktur Gedung Bertingkat dengan Pemodelan Struktur (3D) Berdasarkan Analisis Statik Beban Dorong (Pushover Analysis)." CIVED 9, no. 3 (November 4, 2022): 248. http://dx.doi.org/10.24036/cived.v9i3.119964.

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Evaluasi Kinerja Struktur Gedung Bertingkat Dengan Pemodelan Struktur (3D) Berdasarkan Analisis Beban Dorong (Pushover Analysis)”. Analisis pushover adalah prosedur statis yang menggunakan teknik nonlinier yang disederhanakan untuk memperkirakan deformasi struktural seismic atau gempa bumi, kemudian analisis pushover mensimulasikan fenomena ini dengan menerapkan beban sampai pelelehan (sendi plastis) pertama dalam struktur ditemukan dan kemudian merevisi model untuk memasukkan perubahan struktur yang disebabkan oleh sendi plastis. Analisis ini berupa kurava kapasitas yang dapat melihat titik kinerja gedung saat menerima gempa. Penelitian ini bertujuan untuk mengevaluasi kinerja struktur Gedung Hotel Jatiwangi, Majalengka, berdasarkan analisis beban dorong (Pushover Analysis)” dengan menggunakan SAP 2000 versi 2021. Hasil analisis pushover bahwa titik kinerja untuk pembebanan gempa arah-X adalah 0,131 meter dan diperoleh gaya geser sebesar 3321,385 ton, kemudian untuk arah-Y diperoleh titik kinerja sebesar 0,121 meter dan gaya geser di peroleh 2851031 ton, Sedangkan nilai drift ratio berdasarkan ATC-40 untuk arah-X 0,00483% dan untuk arah-Y sebesar 0,00446%. Maka dapat disimpulkan titik kinerja struktur bangunan ini sudah tercapai dan masuk kategori Immediate Occupancy (IO).

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Lee, Sang-Geun, Dong-Hyawn Kim, and Gil-Lim Yoon. "Seismic Fragility for 5MW Offshore Wind Turbine using Pushover Analysis." Journal of Ocean Engineering and Technology 27, no. 4 (August 31, 2013): 98–106. http://dx.doi.org/10.5574/ksoe.2013.27.4.098.

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Teng, Jun, Hu Bing Tu, Huan Lin Mao, and Ying Liang Qiu. "Investigation on Applicability of Pushover Analysis on High-Rise Diagonal Grid Structural System." Advanced Materials Research 163-167 (December 2010): 3918–24. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.3918.

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As an important seismic analysis method, Pushover is widely used in high-rise buildings, while there is still lack of investigation on applicability of Pushover analysis on diagonal grid structural system. Two structures with height 144 and 288 meters are respectively built, and then Pushover analysis and Incremental dynamic analysis are conducted. Results calculated by two different methods are compared, including top displacement vs. base shear curve, inter-story drift vs. inter-story shear curve, distribution of inter-story drift angle along the building height and plastic developing sequence of structural weak positions. Meanwhile, influence of three lateral load patterns (uniform pattern，inverted triangle pattern and SRSS pattern) on the results is investigated. Analysis results demonstrate that Pushover analysis can in some extent reflect seismic performance of structures and SRSS load pattern can better capture global and local information of structures compared with other two patterns.

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Yang, Yuefeng, Juanjuan Cao, Renquan Qu, and Zigang Xu. "Numerical Simulation of the Seismic Damage of Daikai Station Based on Pushover Analyses." Buildings 13, no. 3 (March 14, 2023): 760. http://dx.doi.org/10.3390/buildings13030760.

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Numerical analysis is an important method for the study of seismic performance of underground structures. Current research on the seismic damage of Daikai station and the subway tunnel during the Great Hanshin earthquake mainly focuses on the dynamic time-history analysis. However, the modeling process of the dynamic time-history analysis is complicated and shows the characteristics of the enormous calculation amount, long running time and low computation efficiency. This paper briefly introduces the seismic phenomena of Daikai station and the subway tunnel during the Great Hanshin earthquake. The internal forces of Daikai station and the subway tunnel under horizontal and vertical bi-directional seismic effects are obtained by simplified seismic analysis. The pushover analyses of the columns are carried out to obtain the seismic performance curves of the columns under different vertical pressures by considering various loading and restraint conditions. Finally, the pushover analyses of the soil-structure system are carried out to reproduce the seismic damage of Daikai station and subway tunnel under horizontal and vertical bi-directional seismic effects. The results show that the computed damage is similar to the actual damage. The pushover analysis method, which considers both horizontal and vertical inertia forces of the soil, can be used to simulate the damage and study the collapse mechanism at Daikai station. Compared with the dynamic analysis, the calculation efficiency of the pushover analysis method is significantly higher; it is therefore suggested to use pushover analysis in seismic analysis of underground stations.

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Xiao, Ming Kui, Huan Huan Xu, Xiao Yan Long, and Jing Meng Zhu. "Discussion on the Method of Pushover with Cyclic Loading." Advanced Materials Research 243-249 (May 2011): 912–19. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.912.

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The cyclic loading pushover method which can simulate the real ground motion are suggested, and the target displacements of cyclic loading are discussed to overcome the drawbacks of traditional Pushover method which cannot consider the important seismic response of plane frames under earthquake, such as cyclic loading history, duration of strong motion, and the cumulative damage of structures. Through the comparison analysis of the story drift and hysteretic energy of plane framed structures gotten by adopting cyclic loading pushover method, traditional pushover method, and dynamic elastic-plastic time-history analysis method respectively, the conclusion that cyclic loading pushover method can better reflect the loading process with ground motion and the cumulative disruptive effect caused by hysteretic energy of structure can be obtained ,which provides some references for performance evaluation of elastic-plastic analysis of seismic structures.

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Gao, Xiu Yun. "The Application of Pushover Method in Complex Bridge Seismic Design." Applied Mechanics and Materials 587-589 (July 2014): 1454–61. http://dx.doi.org/10.4028/www.scientific.net/amm.587-589.1454.

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Elasto-plastic seismic response analysis of complex bridge requires large computation, thus in practical engineering design this method can be simplified according to finite energy principle, finite displacement principle and Pushover method or other approximation algorithms. Finite energy principle and finite displacement principle are applied to piers with simple damage mode, and the two principles differ in structure’s natural mode of vibration. Pushover applied to complex structures which can’t be analyzed as single pier. Pushover gives maximum seismic response by static nonlinear analysis, and current Japanese specification adopts Pushover for complex bridge seismic design such as continuous rigid bridges.

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Wulandari, Windy, and Syafri Wardi. "Seismic Performance of an RC Building Using Pushover Analysis." JOURNAL OF CIVIL ENGINEERING BUILDING AND TRANSPORTATION 7, no. 1 (March 1, 2023): 18–23. http://dx.doi.org/10.31289/jcebt.v7i1.8564.

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Indonesia merupakan daerah rawan gempa dan kejadian gempa sering menyebabkan korban jiwa akibat keruntuhan bangunan. Oleh sebab itu, analisis kinerja seismik bangunan eksisting sangat perlu dilakukan guna meminimalisir resiko yang akan terjadi. Tujuan penelitian ini adalah mengevaluasi kinerja struktur suatu gedung Rusunawa bertingkat tiga di Kota Padang menggunakan metode analisis pushover dengan capacity spectrum menurut ATC-40. Gedung ini didesain berdasarkan peraturan gempa SNI 1726:2012. Berdasarkan penelitian terdahulu, jika dianalisis berdasarkan peraturan gempa terbaru SNI 1726:2019, gedung tersebut mengalami peningkatan gaya geser dinamik sekitar 20%. Oleh karena itu, gedung ini sangat perlu dianalisis lebih lanjut dengan pushover analysis. Hasil analisis pushover ini yaitu berupa kurva kapasitas, displacement atau drift, performance pont, level kinerja dan skema sendi plastis yang terjadi pada gedung tersebut. Hasil analisis menunjukan bahwa level kinerja gedung setelah dilakukan analisis pushover pada arah x dan arah y adalah immediate occupancy dengan pembentukan sendi plastis yang terjadi diawali dari ujung balok. Level kinerja ini berarti keadaan dimana kerusakan yang diakibatkan gempa bumi terhadap suatu bangunan tidak terlalu berarti, kekakuan gedung bisa dikatakan hampir sama saat sebelum terjadinya gempa. Hasil ini terjadi karena peningkatan respon spektrum yang tidak signifikan pada SNI 1726:2019, sehingga tidak berpengaruh pada level kinerja struktur.

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Gunes, Baris. "Seismic Assessment of the Archangeloi (Başmelekler) Church in Kumyaka, Türkiye." Buildings 13, no. 3 (March 16, 2023): 787. http://dx.doi.org/10.3390/buildings13030787.

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This study describes the seismic assessment of the Archangeloi (Başmelekler) Church in Kumyaka (Sige), Türkiye. The Archangeloi Church is an important religious monument that has survived to the present day from the eighth century. Through field surveys, the structural system, damages and masonry texture were determined. Pushover analysis was performed with OpenSees software, which has an advanced nonlinear analysis capability. The Damage TC3D material damage model with advanced features was used, allowing a more stable and effective application of mixed implicit–explicit analyses. Displacement-based pushover analyses were performed with different control points, and the damage patterns, ultimate strength and strength reductions were obtained effectively. The pushover analysis reflected the structure’s expected behavior, especially its post-ultimate strength and failure patterns, owing to the material damage model’s advanced mixed implicit–explicit capacity. Kinematic analyses were performed to determine the overturning mechanisms. Due to the analysis assumptions and pre-assigned failure mechanisms, lower failure multipliers were obtained with the kinematic analysis than with the pushover analysis. Under seismic loading, the structure did not satisfy the required performance targets. Extensive damage occurred throughout the structure, even at the lowest performance levels. The selected modeling/analysis method and material damage model to determine this church’s structural performance reflect the expected structural behavior.

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Qin, Kang, Zhong Gen Xu, and Chang Gen Deng. "Analysis of Transmission Tower Structure with Pushover Method." Applied Mechanics and Materials 351-352 (August 2013): 203–7. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.203.

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Pushover method is mainly used to find the weak part of the structure and possible failure modes. This paper presents a pushover analysis. Taking a transmission tower as an example, calculations are carried out by SAP2000 Program with assumption of rational criterion. Seismic loads of frequently met and rarely met seismic concentration degrees are considered. By comparing the structural target seismic performance and the sequence of plastic hinges induced, seismic performances of the transmission tower are estimated.

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Abass, Haider Ali, and Husain Khalaf Jarallah. "Seismic Evaluation and Retrofitting of an Existing Buildings-State of the Art." Al-Nahrain Journal for Engineering Sciences 24, no. 1 (July 7, 2021): 52–75. http://dx.doi.org/10.29194/njes.24010052.

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In this study, previous researches were reviewed in relation to the seismic evaluation and retrofitting of an existing building. In recent years, a considerable number of researches has been undertaken to determine the performance of buildings during the seismic events. Performance based seismic design is a modern approach to earthquake resistant design of reinforcement concrete buildings. Performance based design of building structures requires rigorous non-linear static analysis. In general, nonlinear static analysis or pushover analysis was conducted as an efficient instrument for performance-based design. Pushover analysis came into practice after 1970 year. During the seismic event, a nonlinear static analysis or pushover analysis is used to analyze building under gravity loads and monotonically increasing lateral forces. These building were evaluated until a target displacement reached. Pushover analysis provides a better understanding of buildings seismic performance, also it traces the progression of damage and failure of structural components of buildings.

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Islahuddin, Muhammad, R. K. Khare, and Amit Melani. "Non Linear Seismic Behavior of RCC Low Rise Flat Slab Building." Journal of Structural Technology 7, no. 3 (December 6, 2022): 20–25. http://dx.doi.org/10.46610/jost.2022.v07i03.004.

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The Building behaves nonlinearly as a result of both man-made and natural risks. Flat slab construction has several advantages over traditional RC frame construction. This work examines the progressive collapse analysis of a flat slab structure using a non-linear static analysis approach known as pushover analysis. In this sort of study, a computer model of a structure is exposed to a preset lateral load pattern. The modeling of a structure is done by software named ETABS, and pushover analysis is done. By doing this pushover analysis, we can identify the weak points in the structure and decide whether the specific portion of the building should be retrofitted or changed to satisfy the requirements. Pushover analysis is conducted in both positive and negative x and y directions. For each member, default hinge parameters based on the FEMA-356 and Applied Technology Council (ATC-40) criteria are applied.

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Yu, Miao, Zhi Hong Dai, and Gui Juan Hu. "Improvements on Structural Static Pushover Analysis Method in High-Rise Building Structure." Advanced Materials Research 989-994 (July 2014): 3075–78. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.3075.

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In this paper, a new analysis model to assess the structure seismic capability is established, using improved capacity spectrum method. The model can solve the problem of many unknown and big computation workload in the process of conventional Pushover analysis. Conventional Pushover is very complex when use in the analysis of structure dynamic problem and nonlinear problem, the new model can solve these problem.

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Wei, Biao, Qing Yuan Zeng, and Wei An Liu. "Applicability of Modal Pushover Analysis on Bridges." Advanced Materials Research 255-260 (May 2011): 806–10. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.806.

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Taking one irregular continuous bridge as an example, modal pushover analysis (MPA) has been conducted to judge whether it would be applicable for seismic analysis of irregular bridge structures. The bridge’s seismic demand in the transverse direction has been determined through two different methods, inelastic time history analysis (ITHA) and MPA respectively. The comparison between those two results indicates that MPA would be suitable only for bridges under elastic or slightly damaged state. Finally, some modifications are used to improve the MPA’s scope of application, and the results illustrate that the adapted MPA will be able to estimate bridges’ seismic demands to some extent.

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R. Shafiei-Tehrany, M. ElGawady, and W. Coffer. "Pushover Analysis of I-5 RAVENNA Bridge." Electronic Journal of Structural Engineering 11 (January 1, 2011): 32–41. http://dx.doi.org/10.56748/ejse.11141.

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Nonlinear pushover analysis is a powerful tool for evaluating the inelastic seismic behavior of structures. This paper presents a detailed seismic analysis of a complex bridge. The I-5 Ravenna Bridge was assessed through nonlinear pushover analyses that highlights many important issues of bridges constructed on hollow core prestressed concrete piles. A three dimensional finite element analysis of the bridge have been carried out including modeling of the bridge bearings, expansions joints, and soil-structure interaction. The nonlinear response of the bridge was investigated from the first pier hinging to the inelastic equilibrium condition using three different response spectrums representing ground motions with different return periods. The effects on the seismic demand due to period lengthening and damping increase produced by structural deterioration were evaluated. The effects of three different soils on the bridge performance were investigated as well. Using dense sand increased the stiffness of the system and the ductility capacity. In addition, change the soil type has insignificant effect on the post-yielding stiffness of the bridge.

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Wang, Chang Feng, and Yi Jun Bao. "Pushover Analysis of Pile-Supported Bridge Piers." Advanced Materials Research 681 (April 2013): 234–39. http://dx.doi.org/10.4028/www.scientific.net/amr.681.234.

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According to Japan Railway seismic design code, truss finite element model is established considering the pile components and foundation nonlinear finite element model in this paper, an analysis on the ultimate horizontal bearing capacity of bridge pile foundation of passenger dedicated line is made and the results of m-method calculation are compared. The analysis results show that: when horizontal force at the top of pier is larger, with the pile side soil horizontal and vertical force continuously into the plastic, the calculation results differ greatly with two seismic specification; the pier top level force-displacement skeleton curve considered pile-soil interaction is available in trilinear description, the analysis results can provide a theoretical basis for the seismic analysis of the pile foundation under rare earthquake.

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Huang, Chao Hsun, Yungting Alex Tuan, and Ruo Yun Hsu. "Nonlinear pushover analysis of infilled concrete frames." Earthquake Engineering and Engineering Vibration 5, no. 2 (December 2006): 245–55. http://dx.doi.org/10.1007/s11803-006-0587-0.

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Salonikios, T., C. Karakostas, V. Lekidis, and A. Anthoine. "Comparative inelastic pushover analysis of masonry frames." Engineering Structures 25, no. 12 (October 2003): 1515–23. http://dx.doi.org/10.1016/s0141-0296(03)00118-4.

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Tso, W. K., and A. S. Moghadam. "Pushover procedure for seismic analysis of buildings." Progress in Structural Engineering and Materials 1, no. 3 (April 1998): 337–44. http://dx.doi.org/10.1002/pse.2260010317.

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Zihni, Muhamad, Riza Suwondo, and Made Suangga. "Pushover analysis of multi-storey concrete structures." IOP Conference Series: Earth and Environmental Science 1169, no. 1 (April 1, 2023): 012005. http://dx.doi.org/10.1088/1755-1315/1169/1/012005.

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Abstract Indonesia is located at the confluence of three main tectonic plates which makes it one of the countries with the highest earthquake risk in the world. Recorded experiences has showed that the earthquake cause damage to buildings particularly multi-storey building structures. The purpose of this study is to determine the performance level of multi-storey reinforced concrete structures using a performance-based design method based on the ATC-40 and FEMA 440 regulations. The buildings in this study are 4-storey and 8-storey buildings. The effect of column size, beam size, and concrete quality are investigated. This study results the performance level, capacity curve, level of effectiveness of variations based on pushover analysis using the ATC-40 and FEMA 440. It can be concluded that the building structure is considered as Operational category based on the ATC-40 and FEMA 440 regulations. On the other hand, for the level of effectiveness of variations in building structures, it is more effective to enlarge the column cross-sectional dimensions and increase the height of the beam for 4-storey and 8-storey buildings, respectively.

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Ahmadi, Hamid Reza, Navideh Mahdavi, and Mahmoud Bayat. "Applying Adaptive Pushover Analysis to Estimate Incremental Dynamic Analysis Curve." Journal of Earthquake and Tsunami 14, no. 04 (February 27, 2020): 2050016. http://dx.doi.org/10.1142/s1793431120500165.

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To estimate seismic demand and capacity of structures, it has been suggested by researchers that Incremental Dynamic Analysis (IDA) is one of the most accurate methods. Although this method shows the most accurate response of the structure, some problems, such as difficulty in modeling, time-consuming analysis and selection of the earthquake records, encourage researchers to find some ways to estimate the dynamic response of structures by using static nonlinear analysis. The simplicity of pushover analysis in evaluating structural nonlinear response serves well as an alternative to the time-history analysis method. In this paper, based on the concepts of the displacement-based adaptive pushover (DAP), a new approach is proposed to estimate the IDA curves. The performance of the proposed method has been investigated using 3- and 9-story moment-resisting frames. In addition, the results were compared with exact IDA curves and IDA curves developed by the modal pushover analysis (MPA) based method. For evaluation, IDA curves with 16%, 50% and 84% fractile were estimated. Using the results, [Formula: see text] capacities corresponding to Collapse Prevention (CP) limit state were calculated and assessed. Finite element modeling of the structures has been carried out by using ZEUS-NL software. Based on the achieved results, the proposed approach can estimate the capacity of the structure accurately. The significant advantage of the applied approach is the low computational cost and desirable accuracy. The proposed approach can be used to develop the approximate IDA curves.

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Cho, Morris, Hendy Wijaya, and Amelia Yuwono. "Analisis Kapasitas Lateral Pada Fondasi Tiang Tunggal Dan Tiang Kelompok Pada Tanah Pasir." JMTS: Jurnal Mitra Teknik Sipil 3, no. 4 (November 1, 2020): 1105. http://dx.doi.org/10.24912/jmts.v3i4.8423.

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Fondasi ialah bagian dari suatu sistem rekayasa yang meneruskan beban yang ditopang oleh fondasi dan beratnya sendiri kedalam tanah dan batuan yang terletak dibawahnya. Pada jurnal ini, dilakukan analisa kapasitas lateral tiang tunggal dan tiang kelompok pada tanah pasir. Untuk dapat menganalisis tiang pancang tunggal dan tiang kelompok pada tanah pasir dalam kondisi elastic dapat dilakukan dengan metode analisis statik non linier atau analisis pushover. Analisis pushover adalah prosedur analisis untuk mengetahui keruntuhan suatu bangunan dengan memberikan suatu pola beban statik tertentu dalam arah lateral yang besarnya akan ditingkatkan secara bertahap sampai struktur tersebut mencapai target displacement tertentu atau mencapai pola keruntuhan tertentu. Dari hasil analisis pushover terhadap suatu tiang dihasilkan kurva yang menghubungkan antara base shear dan roof displacement atau disebut kurva kapasitas. Dari kurva kapasitas tersebut dapat dilihat perilaku suatu tiang dari kondisi elastis sampai plastis hingga mengalami kegagalan. Dengan adanya kurva kapasitas yang diperoleh, kita dapat melihat tingkat kinerja suatu tiang berdasarkan metode spektrum kapasitas berdasarkan peraturan ATC-40 dan Pushover Analysis of Underground Structures. The foundation is part of an engineering system that forwards the burden supported by the foundation and its own weight into the soil and rocks beneath. In this journal, an analysis of the lateral capacity of single piles and group piles is carried out on sandy soil. To be able to analyze a single pile and group piles on sandy soil in elastic conditions can be done by non-linear static analysis or pushover analysis. Pushover analysis is an analysis procedure to determine the collapse of a building by providing a certain static load pattern in the lateral direction whose magnitude will be increased gradually until the structure reaches a certain displacement target or reaches a certain collapse pattern. From the results of pushover analysis on a pile, a curve that connects the base shear and roof displacement is called a capacity curve. From the capacity curve, it can be seen the behavior of a pile from elastic to plastic conditions to failure. With the obtained capacity curve, we can see the level of performance of a pile based on the capacity spectrum method based on ATC-40 regulations and Pushover Analysis of Underground Structures.

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Bakalis, Athanasios, Triantafyllos Makarios, and Asimina Athanatopoulou. "Inelastic Dynamic Eccentricities in Pushover Analysis Procedure of Multi-Story RC Buildings." Buildings 11, no. 5 (May 4, 2021): 195. http://dx.doi.org/10.3390/buildings11050195.

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A documented pushover procedure on asymmetric, single-story, reinforced concrete (RC) buildings using inelastic dynamic eccentricities is extending in this paper on asymmetric multi-story RC buildings, aiming at the Near Collapse state. The floor lateral static forces of the pushover procedure are applied eccentric to the Mass Centers using appropriate inelastic dynamic or design eccentricities (dynamic plus accidental ones) to safely estimate the ductility demands of both the flexible and stiff sides of the building due to the coupled torsional/translational response. All eccentricities are applied with respect to the “Capable Near Collapse Principal System” of multi-story buildings, which is defined appropriately using the well-known methodology of the torsional optimum axis. Moreover, two patterns of lateral forces are used for performing the analysis, where in the second one an additional top-force is applied to consider the higher-mode effects. A six-story, asymmetric, torsionally-sensitive RC building is examined to verify the proposed pushover procedure relative to the results of non-linear dynamic analysis. The outcomes indicate that the proposed pushover procedure can safely predict the seismic ductility demands at the flexible and stiff sides, providing reliable estimates for the peak inter-story drift-ratios throughout the building as well as a good prediction of the plastic mechanism.

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Journal articles on the topic 'Pushover analysis'

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