Relevant bibliographies by topics / Rc-member

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Rc-member'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Rc-member"

1

SHIMAZAKI, Kazushi. "ACTUAL MEMBER TESTS OF THE EXISTING RC BUILDING." Journal of Structural and Construction Engineering (Transactions of AIJ) 81, no. 719 (2016): 91–99. http://dx.doi.org/10.3130/aijs.81.91.

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Choi, Chang‐Koon, and Hyo‐Gyoung Kwak. "Optimum RC Member Design With Predetermined Discrete Sections." Journal of Structural Engineering 116, no. 10 (October 1990): 2634–55. http://dx.doi.org/10.1061/(asce)0733-9445(1990)116:10(2634).

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ICHINOSE, Toshikatsu. "TRUSS MECHANISM IN CRITICAL REGION OF RC MEMBER." Journal of Structural and Construction Engineering (Transactions of AIJ) 60, no. 475 (1995): 129–35. http://dx.doi.org/10.3130/aijs.60.129_2.

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Kim, Il Sun, Yoon Suk Choi, Chan Kyu Lee, and Eun Ik Yang. "Analytical Study on the Flexural Behavior of Reinforced Concrete Beam with Mineral Admixture under Calcium Leaching Degradation." Materials Science Forum 940 (December 2018): 123–27. http://dx.doi.org/10.4028/www.scientific.net/msf.940.123.

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Calcium leaching degradation could be happened in reinforcement concrete member due to the contact with pure water in underground condition. Thus, it is needed to evaluate the resistance of calcium leaching for concrete mixed with mineral admixtures. So, in this paper, to evaluate the flexural behavior in RC member with mineral admixture under calcium leaching degradation, we investigated the effect of calcium leaching using the non-linear finite-element program. From the results, the load capacity and flexible rigidity of a degraded RC member decrease when the degradation level increases with leaching period. And, regardless of the type of mineral admixtures, finite-element-method analysis effectively showed the characteristics of calcium leaching damaged RC beam.
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ITO, Kazuyuki, and Satoshi ITO. "Reliability of RC-member for flexure and axial load." Journal of the Society of Materials Science, Japan 36, no. 410 (1987): 1272–78. http://dx.doi.org/10.2472/jsms.36.1272.

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Shah, Ismail, Li Jing, Shahid Ayaz, Waqas Ali, Abdullah Abdullah, and Nauman Khan. "Retrofitting of RC Beam Structure Member by using CFRP." International journal of Engineering Works 7, no. 10 (October 16, 2020): 350–54. http://dx.doi.org/10.34259/ijew.20.710350355.

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The research has been lead relating the use of carbon fibre-reinforced polymer (CFRP) sheets in retrofitting and strengthening of the reinforced concrete member. The present research was conducted by using the epoxy to reinforced concrete beams retrofitted and strengthened for flexural strength by using CFRP sheet. The selected cross-section of the beam having 2400 mm length with 150 mm width and 225 mm height and the beam tension reinforcement on the bottom was set on 2#4bar@1.5" with the 38.1 mm clear cover was set to the main flexural reinforcement. The studied beam was focused on flexural behaviour. The experimental study has shown that while the using of CFRP with epoxy will improve the rigidity and durability of the concrete beam. Their great deformability greatly improves the seismic properties of the beam structures. Under the reinforced RC beams showed a very large deflection by control beam before their failure. By using CFRP externally the rigidity of retrofitted and strengthened beams can be improved.
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Wu, Chengqing, Deric John Oehlers, and Ian Day. "Layered Blast Capacity Analysis of FRP Retrofitted RC Member." Advances in Structural Engineering 12, no. 3 (June 2009): 435–49. http://dx.doi.org/10.1260/136943309788708338.

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FUKADA, Kazuyuki, Kyuichi MARUYAMA, and Kazuyuki TAKENAKA. "Connecting Method of FFU Member to RC Member and Its Effectiveness in Mechanical Behavior." Doboku Gakkai Ronbunshu, no. 620 (1999): 95–107. http://dx.doi.org/10.2208/jscej.1999.620_95.

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Li, Zuo Hua, Jun Teng, and Xue Feng He. "Damage Analysis Model for RC Members Based on Level of Material." Advanced Materials Research 163-167 (December 2010): 1262–67. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1262.

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This paper presents a numerical strategy to model nonlinear damage behavior of RC members based on level of material. The first part of the paper presents a numerical model of the RC member based on the Timoshenko multifiber beam elements and non-linear damage constitutive laws for concrete, and the effective three dimensional fiber beam-column element model is developed for the nonlinear damage analysis of RC members with VUEL subroutine based on ABAQUS/Explicit platform. In the second part, a nonlinear damage analysis for RC members is established by analyzing the sections of fiber beam column elements, and the member damage index through statistical analysis of concrete fibers damage is defined in the extreme section of beam elements, which can describe the nonlinear damage behavior of RC members under any loadings. Accuracy of the model is identified preliminarily by comparing with the analysis results of solid elements, the results shows that it seems now possible to use this approach to investigate numerically the nonlinear damage behavior of RC members based on level of material.
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Zhang, Ke Bo, Zhi Zhang, Jian Ren Zhang, and Bin Liu. "Analysis of Shear Capacity of Stirrup Corroded RC Beam Based on the Truss-Arch Theory." Applied Mechanics and Materials 204-208 (October 2012): 2865–73. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2865.

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On the basis of truss-and-arch model and the concrete softening strength criterion under ultimate state, a formula for shear capacity of reinforced concrete (RC) beam with diagonal reinforcement was established and verified. Accordingly, six RC beams with diagonal reinforcement and corroded stirrup were tested along with control group, the tested results were analyzed by liner regression to modify the formula given. Hence a formula for inclined section shear capacity of stirrups corroded RC beam with diagonal reinforcement was proposed and compared with a preceding formula without a consideration of diagonal reinforcement in corroded RC beam .The results showed that the existence of diagonal reinforcing steel bars enhanced the behavior of vertical compression web member in truss institutions, therefore increasing the shear force shared by truss mechanism. The inclination of diagonal web member is a crucial parameter of truss model. As the stirrup corrosion aggravating, the shear bearing capacity of such RC beams does not decrease drastically.
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Dissertations / Theses on the topic "Rc-member"

1

Weiland, Silvio, and Manfred Curbach. "Interaktion gemischter Bewehrungen bei der Verstärkung von Stahlbeton mit textilbewehrtem Beton." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244051366655-25294.

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Textile Bewehrungen stellen eine hervorragende Alternative zu bisherigen Verstärkungsmethoden dar. Die Wirksamkeit von Textilbetonverstärkungen konnte bereits eindrucksvoll nachgewiesen werden. Um sowohl die vorhandene Bausubstanz, als auch die Verstärkung optimal auszulasten, ist es erforderlich, das Zusammenwirken beider Bewehrungsarten unter Berücksichtigung der unterschiedlichen Verbundeigenschaften zu beschreiben. In diesem Beitrag wird das gemeinsamen Tragverhalten von Betonstahl und textiler Bewehrung eingehend erläutert. Zur Veranschaulichung wird daher vor allem die Verbundtragwirkung und deren Einfluss auf gerissene Zugglieder genauer untersucht.
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Weiland, Silvio. "Interaktion von Betonstahl und textiler Bewehrung bei der Biegeverstärkung mit textilbewehrtem Beton." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-37944.

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Textilbewehrter Beton zur Verstärkung von Stahlbetonbauteilen ist neben den klassischen und etablierten Verfahren eine äußerst interessante Alternative, die die Vorteile der leichten Kohlenstofffaserklebeverstärkungen mit denen von Spritzbeton mit Bewehrung verbindet. Aus den theoretischen und experimentellen Untersuchungen in dieser Arbeit können wichtige Erkenntnisse zum gemeinsamen Tragverhalten von Betonstahl und textiler Bewehrung sowie zu den Auswirkungen der verbundbedingten Unterschiede abgeleitet werden. Mit den theoretischen Betrachtungen werden das gemeinsame Tragverhalten und der Einfluss des unterschiedlichen Verbundverhaltens auf die Zugkraftaufteilung gezeigt und qualifiziert. Die Behandlung der verbundbedingten Unterschiede bei gemischt mit Betonstahl und Textil bewehrten Zuggliedern ist analog dem Vorgehen bei gemischter Beton- und Spannstahlbewehrung bzw. Klebebewehrung mit Verbundbeiwerten darstellbar. Zur Ableitung entsprechender Kennwerte werden verschiedene Möglichkeiten diskutiert. Zudem wird eine vereinfachte Bemessung vorgeschlagen. Insgesamt sind die Ergebnisse ein wesentlicher Schritt auf dem Weg zur baupraktischen Anwendung von Textilbetonverstärkungen und ermutigen bereits zum umsichtigen Einsatz unter Beachtung der Sicherheitsaspekte. Noch offene Fragen und notwendiger Klärungsbedarf sollten die Wissbegier anregen und vertiefende Forschungsvorhaben und weitere experimentelle Untersuchungen ermöglichen
Textile reinforcement represents an excellent alternative to existing techniques for strengthening of concrete structures, combining the benefits of lightweight fiber reinforced polymer strengthening with those of shotcrete with reinforcement. The theoretical and experimental studies in this thesis provide essential insights into the common load bearing behaviour of reinforcing steel and textile reinforcements as well as on the impact of the different bond characteristics of both types of rein-forcement. With the theoretical investigations, the combined load bearing behaviour and the influence of the different bond characteristics on distribution of the forces could be shown and qualified. The inter-action of both reinforcement types, taking into account the different bond characteristics, can be represented by bond coefficients analogous to the approach to mixed steel and pre-stressing-steel reinforcements. So as to derive the appropriate parameters, several options were discussed. Moreover, a simplified approach to design a TRC-strengthening-layer was proposed. Overall, the results are an essential step towards the practical application of textile reinforced con-crete for the strengthening of concrete structures and should already be encouraging the prudent use while considering the necessary safety aspects. Remaining issues and necessary clarifications should stimulate curiosity and in-depth research projects and allow further experimental studies
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3

Lai, Tzung-Wu, and 賴宗吾. "Member Behavior of RC Columns under Cyclic Axial Compression with Bidirectional Eccentricities." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/55067570990427655631.

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博士
國立成功大學
建築(工程)學系
86
When building is subjected to earthquake loading, most of the columns will be under the action combining cyclic axial force and cyclic biaxial bending, especially the edge columns and the corner columns. The member behavior of RC columns under the interaction of axial force and biaxial bending are different from that merely under axial force or under uniaxial bending. In this investigation, a numerical procedure using 3D finite difference model was developed, and 46 specimens under cyclic axial compression with bidirectional eccentricities has been tested. Based upon the test, the parameters such as concrete strength, reinforcement ratio, hoop spacing, loading types that influence the column behavior has been discussed.And a hysterical model which try to simulate the behavior of RC columns under the action combining cyclic axial compression and biaxial bending has been generated.Before the RC column test, a number of concrete cylinders were tested under cyclic compression. Using the obtained stress-strain relationships, the hysterical model of concrete was generated. Briefly, the main results obtained in this research show that:1. In 3D finite difference model, the incremental secant stiffness method could predict the behavior of RC columns under cyclic axial compression with bidirectional eccentricities.2. Under cyclic load, column behaviors are visibly influenced by the loading type , especially the steel bar yielding.3. Higher concrete strength or more reinforcement ratio will increase the ultimate eccentric load and reduce the corresponding lateral displacement at the mid-point of the column. 4. According to the specimens tested in this study, the effect of hoop spacing either on the ultimate eccentric load or on the lateral displacement is not so visible as that of concrete strength or reinforcement ratio.5. The hysterical model generated in this investigation have a good agreement with test, including unloading, reloading and load reversal.
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Ma, Shin-Cheng, and 馬心正. "Effect of RC Wall Opening to The Member Force Distribution of Rigid Frame." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/29029916133013994434.

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碩士
國立交通大學
土木工程系
88
Effect of RC Wall Opening to Member Force Distribution of Rigid Frame Student : Shin-Cheng Ma Advisor : Fu-Ping Cheng Department of Civil Engineering National Chiao-Tung University Abstract The effect of the existing of walls is always ignored in the building design. But the existence of the walls will cause a significant influence in the member forces. Once the earthquake occurs, the existence of the walls will seriously effect the forces in beams and columns , and cause the brittle fracture by the axial force in column .The walls with opening will make the forces in beams and columns more complex. This study will focus on the analysis of the effect of RC wall opening to the member force distribution in rigid frame. This research analyzes the effect of various opening width and various location of the wall opening to the moments and shears by SAP2000. From the results of analysis show that the moment of left column at the height of the bottom of the opening will get largest value , but the largest shear will occur at the right column at saw height. The moment and shear with opening at center position have largest value. Ⅱ
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Ker, Ming Jah, and 柯明佳. "The Torsional Behavior of the Fire Damaged RC Member with L and T Cross-Section." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/08458771738347079250.

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碩士
國立臺灣科技大學
營建工程技術學系
81
This research is to investigate the torsional behavior of RC members,with T and L sections,after exposure to fire.Thirty- six specimemts were tested in this research.Twenty-four of them were heated according to BS-476 standard temperature curve.The exposure duration of fire were 2 and 3 hours. Test results shows that the torsional strength of reinforced concrete member after exposure to fire decreases as the duration increases, while the twisting angle greatly increases as the imposed temperature increases. According to this study,the residual torsional strength of some of the fire damaged members are found even less than that of the calculated torsional strength capacities of the reinforcement in member provided by Eq.(11-23) of ACI Building Code 1989,with the consideration of strength reduction of concrete due to fire.This indicates that the torsional resistance mechanism of the ordinary RC member fails to function as the fire damage to concrete is severe.A new model for predicting the residual torsional strength of fire damaged RC member is needed.
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Jiun-Hung, Lin, and 林俊宏. "Application of Load-Impulse Diagrams on Prediction of the Failure Modes of RC Member Subjected to Blast Loading." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/fxfs43.

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碩士
國防大學理工學院
軍事工程碩士班
106
Load-impulse diagrams are commonly used in design of protective structures. By simplifying a structure element into a SDOF (Single-Degree of Freedom) system and performing numerical analysis, the structural response limit and failure criterion of the system subjected to different loading conditions can be easily determined, which is of great value to preliminary strength design and damage evaluation. The purpose of this study is to popularize the use of load-impulse diagrams on evaluation the blast resistance capability of current military infrastructures. To determine the severity of RC beams subjected to blast loads, the UFC 3-340-02 is referenced to establish the different damage criteria by defining its support rotation. The numerical analyses are performed to generate load-impulse curves with these defined criteria, which represent the different displacement of the mid-span of the RC beams. Thus, the load-impulse domain are divided into several zones, by checking the where the load-impulse combination located on the diagram, the damage caused by a specific blast scenario can be predicted. The parameters influence the result of analysis includes the weight of TNT, standoff, the compression strength of concrete, the tension strength of steel, the configuration of reinforcement, etc. The numerical analyses are performed by utilizing RCBlast and the results are validated using test data. It is expected that the study approach can be helpful to engineers for structural design and evaluation.
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Ke, Ying-Tzu, and 柯盈慈. "Quantitative assessment of interface bonding between concrete-filled steel tubular member(CFST) and steel plate patch reinforced RC members using dispersive characteristics of lamb waves." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/v694g4.

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博士
朝陽科技大學
營建工程系
107
The study provides a technique to quantitatively and quickly assess the debonding range between steel plate and substrates for concrete-filled steel tubular member (CFST member) or reinforced concrete (RC) structure strengthened by steel plate with epoxy as the bonding agent. The interfacial debonding is evaluated by a parameter derived from the group velocity profile of zero-order antisymmetric mode (A0) of the steel plate with substrates. The technique involves single test with a transducer 400 mm away from a mechanical impact source. The spectrogram of the signal is obtained by Short Time Fourier Transformation (STFT) and reassigning technique. Numerical and experimental studies were performed for two layered (steel + concrete) and three layered (steel + epoxy + concrete) composite plates containing debonding crack with different lateral sizes. The effects of impact-sources, and the defect position related to the test line were also discussed. The experimental and numerical results show the different impact sources, steel plate thicknesses, the locations of test line and defect have no decisive influence on the debonding evaluation. The A0-slope is primarily affected by the length of the defect underneath the test path. The extend of debonds was evaluated from the velocity-normalized wavelength (NWL) diagram of A0 dispersion modal vibration extracted from the group slowness spectrogram. The near linear portions initiates from the wave lengths 2 times the steel plate-thickness for steel-concrete composite plate and 4 times for steel-epoxy-concrete composite plate. The relations of A0-slope and defect ratio for 2-layered and 3-layerd composite plates were obtained using fitting formulas of third degree polynomial. By establishing the formulas, in field study, the portion passing the debonding defect underneath the test line can be estimated by A0-slope. In addition, two case studies were proposed. The first case assessed the debonding between steel plate and concrete for CFST columns after fire damage. Another case was aimed for detecting the unfilled part at the gap of the RC floor bonding steel plate by epoxy resin. In the future, after coarse screening of the interfacial condition with the proposed method, more precise location of interfacial debond can be estimated using pointwise A-scan method, such as normalized impact-echo method. Therefore, an automated detection system can be developed for speedy testing.
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Weiland, Silvio. "Interaktion von Betonstahl und textiler Bewehrung bei der Biegeverstärkung mit textilbewehrtem Beton." Doctoral thesis, 2009. https://tud.qucosa.de/id/qucosa%3A25305.

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Textilbewehrter Beton zur Verstärkung von Stahlbetonbauteilen ist neben den klassischen und etablierten Verfahren eine äußerst interessante Alternative, die die Vorteile der leichten Kohlenstofffaserklebeverstärkungen mit denen von Spritzbeton mit Bewehrung verbindet. Aus den theoretischen und experimentellen Untersuchungen in dieser Arbeit können wichtige Erkenntnisse zum gemeinsamen Tragverhalten von Betonstahl und textiler Bewehrung sowie zu den Auswirkungen der verbundbedingten Unterschiede abgeleitet werden. Mit den theoretischen Betrachtungen werden das gemeinsame Tragverhalten und der Einfluss des unterschiedlichen Verbundverhaltens auf die Zugkraftaufteilung gezeigt und qualifiziert. Die Behandlung der verbundbedingten Unterschiede bei gemischt mit Betonstahl und Textil bewehrten Zuggliedern ist analog dem Vorgehen bei gemischter Beton- und Spannstahlbewehrung bzw. Klebebewehrung mit Verbundbeiwerten darstellbar. Zur Ableitung entsprechender Kennwerte werden verschiedene Möglichkeiten diskutiert. Zudem wird eine vereinfachte Bemessung vorgeschlagen. Insgesamt sind die Ergebnisse ein wesentlicher Schritt auf dem Weg zur baupraktischen Anwendung von Textilbetonverstärkungen und ermutigen bereits zum umsichtigen Einsatz unter Beachtung der Sicherheitsaspekte. Noch offene Fragen und notwendiger Klärungsbedarf sollten die Wissbegier anregen und vertiefende Forschungsvorhaben und weitere experimentelle Untersuchungen ermöglichen.
Textile reinforcement represents an excellent alternative to existing techniques for strengthening of concrete structures, combining the benefits of lightweight fiber reinforced polymer strengthening with those of shotcrete with reinforcement. The theoretical and experimental studies in this thesis provide essential insights into the common load bearing behaviour of reinforcing steel and textile reinforcements as well as on the impact of the different bond characteristics of both types of rein-forcement. With the theoretical investigations, the combined load bearing behaviour and the influence of the different bond characteristics on distribution of the forces could be shown and qualified. The inter-action of both reinforcement types, taking into account the different bond characteristics, can be represented by bond coefficients analogous to the approach to mixed steel and pre-stressing-steel reinforcements. So as to derive the appropriate parameters, several options were discussed. Moreover, a simplified approach to design a TRC-strengthening-layer was proposed. Overall, the results are an essential step towards the practical application of textile reinforced con-crete for the strengthening of concrete structures and should already be encouraging the prudent use while considering the necessary safety aspects. Remaining issues and necessary clarifications should stimulate curiosity and in-depth research projects and allow further experimental studies.
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Books on the topic "Rc-member"

1

Buhler, Alwin. Composition Notebook: RC Airplane RC Plane Hobbyist Gift Club Member Journal/Notebook Blank Lined Ruled 6x9 100 Pages. Independently Published, 2020.

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Book chapters on the topic "Rc-member"

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Martinelli, Enzo, Ciro Faella, Emidio Nigro, and Carmine Lima. "Retrofitting of School Building Located in Southern Italy." In Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures, 71–94. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/cs002.071.

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<p>This paper summarizes the main features of the seismic retrofitting project of a school building located in Montella (AV), Italy. Specifically, it describes the as-built status in terms of structural organization, member detailing, and existing materials properties. Then, it outlines the main assumptions and results obtained from seismic analysis, of both as-built and retrofitted structure. Comments about the construction stage are also reported by describing the main operations put in place with the aim to realize the shear wall system, which is the main retrofitting intervention, and some local strengthening measures consisting in steel plating and jacketing of some underdesigned RC members. Some emphasis is placed on the realization of micro-piles and extra foundations of the aforementioned shear walls. Besides its specific interest, the reported project may be intended as representative of a wide class of seismic assessment and retrofitting projects that have been realized in Italy in the last decade.</p>
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"Strengthening effect of CCFP for RC member under negative bending." In Challenges, Opportunities and Solutions in Structural Engineering and Construction, 281–86. CRC Press, 2009. http://dx.doi.org/10.1201/9780203859926-49.

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Yoshitake, I., Y. Mimura, S. Hamada, and K. Yumikura. "Strengthening effect of CCFP for RC member under negative bending." In Challenges, Opportunities and Solutions in Structural Engineering and Construction. CRC Press, 2009. http://dx.doi.org/10.1201/9780203859926.ch40.

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Sawyer, Donald T., and R. J. P. Williams. "Reactivity of Oxygen Radicals [HO•, RO•, HOO•, ROO-, and RC(O)O•]." In Oxygen Chemistry. Oxford University Press, 1992. http://dx.doi.org/10.1093/oso/9780195057980.003.0009.

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Oxygen radicals are defined as those molecules that contain an oxygen atom with an unpaired, nonbonding electron (e.g., HO·). Although triplet dioxygen (·O2·) and superoxide ion (O2 - ·) come under this definition, their nonradical chemistry dominates their reactivity, which is discussed in Chapters 6 (·O2·) and 7 (O2-·). The hydroxyl radical (HO·) is the most reactive member of the family of oxygen radicals [HO·, RO·, ·O·, HOO·, ROO·, and RC(O)O·], and is the focus of most oxygen radical research. In the gas phase the dramatic example of oxygen radical reactivity with hydrocarbon substrates is combustion, which is initiated by HO· (or RO· or MO·) and propagated by ·O2· and ·O·.
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Mohan Raisinghani, Bhushan. "Natural Hazards - Impacts, Adjustments and Resilience." In Natural Hazards - Impacts, Adjustments and Resilience [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94303.

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Reinforced concrete is a global material, the utilization of which has no limits. India is a country that uses mostly RC framed structures as the routine building construction type. The building is made of inter-connecting elements in horizontal and vertical directions. To showcase the effectiveness of high grade of concrete and confining reinforcement much research has been carried out till date from 1980s. However, in design of structures we do not consider the effect of confining reinforcement in resisting stress in any member element. Various tools have been developed to find the capacity of member at element level to resist forces. For performance-based design of buildings, it is necessary to evaluate the performance at individual local level and at global levels. In this study, the effect of available tools (for section analysis) and design codes for member limit calculation is demonstrated and structure is evaluated for the threshold limits given in ASCE-41. It is observed that the code designed members are sufficient to resist lateral earthquake forces effectively for the estimated hazards if proper design tools are employed.
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"Metaheuristic Optimization of Reinforced Concrete Footings." In Metaheuristic Approaches for Optimum Design of Reinforced Concrete Structures, 116–40. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2664-4.ch005.

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Footings are one of the structural members, which is one of the complex engineering problems to optimize. Differently from the other reinforced concrete member designs such as beams and columns, geotechnical limit states are also needed to consider in addition to structural state limits. In this chapter, the optimum design of RC footing is presented according to ACI 318: Building code requirements for structural concrete. The optimum results of methodologies employing different algorithms including Harmony Search (HS), Teaching-Learning-Based Optimization algorithm (TLBO), and Flower Pollination Algorithm (FPA). In the methodologies, the design variables are values about dimensions of the footing, the orientation of the supported columns and reinforcements. Also, a simplified methodology is also presented with a design code employing HS.
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Conference papers on the topic "Rc-member"

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Yeh, Yung-Hsin, and Wen-I. Liao. "Cyclic Performance of Two-Story Ductile RC Frames With Infill Walls." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71453.

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This paper presents the results of the experimental and analytical investigations conducted on four 0.8 scale 2-story one bay ductile reinforced concrete frames with infill nonstructural walls subjected to cyclically increasing loads. The material properties and the member sizes of beams and columns in the four RC frame specimens are identical, but with different types of infill nonstructural wall. These four frames are the pure frame, frame with short column, frame with short beam and frame with wing walls. The four RC frame specimens were designed and constructed according to the general prototype building structures in Taiwan. Test results indicate that the ductility behavior of the frames with infill wall is similar to those of the pure frame. The ultimate base shear strength of the frames with infill walls is higher than those of the pure frame. Analytical results show that the proposed simplified multi-linear beam-column element implemented in a general purpose structural analysis program can accurately simulate the cyclic responses of the RC frame specimen incorporating the elastic flexural stiffness computations suggested by the model building codes.
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S, Ajimi, Keerthy M. Simon, and Bharati Raj. "A Review on Residual Life Assessment of Plain and Reinforced Concrete Members." In International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.33.

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Under fatigue loading, concrete like quasi-brittle materials exhibit softening behaviour since an inelastic zone will be formed in front of the crack tip called the fracture process zone (FPZ). There are various toughening mechanisms that exhibiting in this region. Current design practices for reinforced concrete assumes a zero tensile strength for concrete which is actually overly conservative. In fact, concrete can bear significant tensile stress and strain. Therefore, the tension softening response of RC member should consider in the study. Under fatigue loading, strength and stiffness decrease progressively according to the maximum amplitude and the number of cycles of loading. Fracture plays an important role in failure of normally and lightly reinforced beam. Since FPZ mechanisms and fibre bridging action resist crack propagation, we have to consider these mechanisms while assessing remaining life of RC member. Fatigue failure occurs when applied load is much less than the moment capacity. Such structures susceptible to fatigue load need to be monitored and residual life is to be predicted. This paper is presenting a review on the residual strength assessment on plain and reinforced concrete. The review includes the influence of various tension-softening models in predicting the residual life of plain and reinforced concrete. A comparative study is also conducted in order to assess the residual life by considering various tension softening laws.
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Chen, Jin-Yang, Lin-Hai Han, Fa-Cheng Wang, and Ting-Min Mu. "Analytical behaviour of concrete-encased CFST box stub columns under axial compression." In 12th international conference on ‘Advances in Steel-Concrete Composite Structures’ - ASCCS 2018. Valencia: Universitat Politècnica València, 2018. http://dx.doi.org/10.4995/asccs2018.2018.6966.

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Concrete-encased CFST (concrete-filled steel tube) members have been widely used in high-rise buildings and bridge structures. In this paper, the axial performance of a typical concrete-encased CFST box member with inner CFST and outer reinforced concrete (RC) is investigated. A finite element analysis (FEA) model is established to analyze the compressive behavior of the composite member. The material nonlinearity and the interaction between concrete and steel tube are considered. A good agreement is achieved between the measured and predicted results in terms of the failure mode and the load-deformation relation. The verified FEA model is then used to conduct the full range analysis on the load versus deformation relations. The loading distributions of different components inclouding concrete, steel tube and longitudinal bar during four stages are discussed. Typical failure modes, internal force distribution, stress development and the contact stress between concrete and steel tube are also presented. The parametric study on the compressive behavior is conducted to investigate the effects of various parameters, e.g. the strength of concrete and steel, longitudinal bar ratio and stirrup space on the sectional capacity and the ductility of the concrete-encased CSFT box member.
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Xiao, Congzhen. "Case study on comparison between Chinese and American design of high-rise RC frame-core-tube structure." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0029.

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<p>Two identical high-rise reinforced concrete (RC) frame-core-tube structures, located in Beijing China and San Francisco America, respectively, are designed using the Chinese and the American codes. Methods to determine load, seismic action, and material strength for seismic design in the Chinese and American codes are presents in this paper, and the major differences of design results are compared. Elastic response of the two structures are calculated by the mode-superposition response spectrum method, and the member dimension, dynamic characteristics, displacement, and reinforcement are compared. Furthermore, the dynamic elastic-plastic behavior is conducted using 10 sets of earthquake waves to analyze the collapse probability. Results reveal that the two structures designed by the Chinese and American codes show some differences in the dynamic behavior, displacement and reinforcement in the boundary restraint elements of shear walls due to the different design methods in the Chinese and American codes.</p>
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Droogné, Didier, Wouter Botte, and Robby Caspeele. "Assessment of current design guidelines for vertical ties in relation to progressive collapse of RC structures." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0226.

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<p>Despite the recent amount of theoretical and technological developments, structural robustness is still an issue of controversy being underlined by several structural failures in the past. Current design codes point out different strategies, among which strategies to limit damages due to the collapse of a load-bearing member by applying prescriptive design and detailing rules. For example for consequence class 2 structures EN1991-1-7 defines a risk class CC2b for which also vertical ties are required. However, the background of the design values of vertical ties in current codes is not clear and their adequacy should be validated. Moreover effects such as membrane action and Vierendeel action are important to consider when assessing structural robustness and are difficult to incorporate when applying only traditional design methodologies. To this extent a set of numerical simulations have been executed in this contribution in order to verify the progressive collapse behaviour of RC frames including the response of the vertical ties in the columns.</p>
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Gowda, Chandan C., Joaquim A. O. Barros, and Maurizio Guadagnini. "Torsional strengthening of thin-walled tubular reinforced concrete structures using NSM-CFRP laminates: Experimental work." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.1712.

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<p>Torsional strengthening of thin walled tubular reinforced concrete elements, such as bridge box girders and spandrel beams, has received only limited attention, and investigations generally focus on the use of conventional strengthening methods such as span shortening, steel encasing, member enlargement, shotcrete etc. However, research on the use of innovative fibre reinforced polymers (FRP) as near surface mounted (NSM) reinforcement for torsional strengthening is still very limited and more work should be undertaken to examine the full potential of the NSM technique over more traditional solutions. The current paper assesses experimentally, four different strengthening configurations using NSM technique applied on three faces of two beams using straight CFRP laminates, and on four faces of two beams using special L-CFRP laminates.</p><p>The results show that the proposed strengthening configurations can effectively control crack propagation and increase the torsional moment carrying capacity of the RC element, thus resulting in increased performance and durability.</p>
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Liao, Wen-I., and Yi-Lung Mo. "The Studies of the High Seismic Performance RC Shear Walls." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93143.

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In order to improve the ductility of shear walls under earthquake loading, high seismic performance shear walls have been proposed to have steel bars in the same direction as the principal direction of applied stresses in the critical regions of shear walls. This paper presents the test results and model-based simulation of two shear walls under shake table excitation and two shear walls under reversed cyclic loading. Based on the experimental results, the tested shear walls with reinforcement oriented close to the principal tensile direction of applied stresses have greater ductility than that of the conventional shear wall. The model-based simulation based on the Cyclic Softened Member Model (CSMM) is performed and compared with the test results. The comparison shows that CSMM can well predict the seismic behaviors of the shear walls.
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Kunii, Michihiro, Daisuke Tsukishima, and Mareki Kuraoka. "Study on improvement of strength of Beam-column Joints at railway RC rigid-framed viaducts." In IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0683.

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<p>In Japan, in order to make the city centering around the station, we are developing the underpass of the station as a commercial facility. Therefore, a structure that enlarges the column span and reduces the cross-sectional height of the beam to widen the under-elevated space is desired. However, while the amount of reinforcing bars increases, the beam-column joints become smaller, so that the reinforcing bars are overcrowded in the beam column joints. In addition, since the fixing length of the reinforcing bars is insufficient, or the strength of the beam-column joint cannot be sufficiently secured, problems such as not having a sufficient proof stress on the joint portion which should originally be stronger than the beam and column member. In this report, we developed a fixing method of reinforcing bars of column beams which improves the proof strength of beam-column joint and also simple reinforcing bars even in the case of small beam-column joint, and applied to station construction work, we report on them.</p>
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