Relevant bibliographies by topics / The rigidity of bridges

Contents

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

Academic literature on the topic 'The rigidity of bridges'

Author: Grafiati
Published: 3 May 2022
Last updated: 5 May 2022

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Journal articles on the topic "The rigidity of bridges"

1

Jaeger, Leslie G., and Baidar Bakht. "Semicontinuum analysis of shear-weak grillages." Canadian Journal of Civil Engineering 17, no. 3 (June 1, 1990): 294–301. http://dx.doi.org/10.1139/l90-036.

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Cellular bridges and voided slab bridges with large and frequently spaced circular voids undergo distortion of the cross section under nonuniform loads, which may have a significant effect on the load distribution characteristics of the bridge. For two-dimensional analysis of these bridges, it is usual to represent the transverse medium of the bridge as having finite shear rigidity. Up to the present time, the semicontinuum method of analysis did not have the capability of handling finite shear rigidity of the transverse medium. A modification is introduced in this paper through which it can now do so. It is shown that the proposed modifications consist of only minor changes to the set of equations of the earlier version of the method. By comparing the results of the proposed method with those obtained from grillage analysis, it is shown that the accuracy of the proposed method is equal to that of the grillage method, which has already been found by many researchers to be suitable for the analysis of shear-weak bridges. The paper also contains proposed modifications to the semicontinuum method so that it can handle finite shear rigidities of the longitudinal beams as well. Key words: analysis, bridges, load distribution, semicontinuum method, shear rigidity, shear-weak grillages, shear-weak plotes.
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Chen, Xu Yong. "Tests before and after Reinforcement of Tujiazui Bridge." Applied Mechanics and Materials 204-208 (October 2012): 2095–99. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2095.

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This paper is aimed to verify the effects of reinforcement by tests before and after reinforcement of a two-way curved arch bridge with a clear span of 70m. Four 100kN and 180kN trucks are used for load tests of the bridge before and after reinforcement, and then the test values are compared with the calculated values. Tests before reinforcement has proved insufficient rigidity in some parts of the bridge, the design load grade is low, and the common fault in two-way curved arch bridges. The finite element numerical analysis tool ANSYS is used for finite element simulative analysis of the bridge, and the comparison of test values with calculated values shows the bridge can meet the existing design load grade after reinforcement. This paper has verified the feasibility and rationality of utilizing the physical unit of ANSYS for analysis of two-way curved arch bridges after reinforcement, and meanwhile, proved that the rigidity and design grade of bridges can be improved by reinforcement.
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Zhou, Zhi Hui, Guo Liu, Zhi Dong Qian, Ying Wen, and Qing Yuan Zeng. "Study on Critical Speed of Freight Train Derailment on Bridges." Advanced Materials Research 639-640 (January 2013): 456–59. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.456.

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The mechanism of train derailment was demonstrated to be the loss of lateral vibration stability of train-bridge (track) system. Based on the theory of energy increment analysis for system movement stability, the energy increment criterion for derailment evaluation and the method of analyzing critical speed of train derailment Vcr were presented. The critical speed of empty freight train on Laoluanhe bridge, Huanghe bridge and Youshui bridge were calculated as 65.2 km/h，64.8 km/h and 66.5 km/h respectively, which were close to actual derailment speed. It is manifested that the method of analyzing critical speed of train derailment is reasonable. According to the calculated results of the critical speed on bridges with different lateral rigidity, it is testified that the critical speed of train derailment rises with the bridge lateral rigidity strengthened. The measure to prevent derailment on bridge is to ensure enough bridge lateral rigidity to meet the running safety of train.
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Wang, Guang Hui, Lian Shen, and Cheng Long Wei. "Research on Strengthening Existing Bridges by Widening." Advanced Materials Research 639-640 (January 2013): 1092–95. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.1092.

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This paper aims to put forward a new method of strengthening the existing bridges with narrow decks and low bearing capacity to overcome the high cost and pollution problems in dismantling them. The method, strengthening bridges by built stringers and cross beams, is by widening some parts of a bridge. Based on the basic theory of finite element, we have set up an analysis model of strengthening the bridges by widening, which helps to demonstrate the rationality of this method. Meaningful conclusions have been drawn from the parameter analysis of the rigidity of the new widening stringers, the rigidity of the new cross beams and the relative settlement of the new and the old foundations. This method can be referenced by the reinforcement and maintenance of medium and small bridges.
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Huang, Xin Yi, Wei Dong Zhuo, and Shang Guan Ping. "Parameter Correlation Study of Impact Factors on Concrete Curved Box Girder Bridges." Advanced Materials Research 255-260 (May 2011): 926–30. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.926.

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The impact factors for vehicle load were ever characterized by varied parameters among different countries, and it is now commonly described by the fundamental frequency of the first bending mode for straightened bridges, but there are still no computation formulae proposed for concrete curved bridges. Massive vehicle-bridge interaction analysises are carried out on concrete curved box girder bridges with different span length, curvature radius, section type, span number and boundary conditon, using a validated numerical method. Based on the obtained results, the impact factors for varied effects are discussed, as well as their correlation with parameters of central radius, ratio of bending to torsional rigidity, integral impact coefficient and the fundamental frequency of vertical bending mode. It is indicated that, the impact factor of interal forces, deflection and reaction force are minus correlated with the discussed parameters except for ratio of bending rigidity to torsional rigidity. The impact factors are most closely correlated with the fundamental frequency of vertical bending mode, so it is best suited to characterize the change of impact factors.
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Wang, Jiawei, Guanhua Zhang, Jinliang Liu, and Yanmin Jia. "Research on destructive test of pretensioning prestressed concrete hollow slab in service." International Journal of Structural Integrity 9, no. 4 (August 13, 2018): 429–41. http://dx.doi.org/10.1108/ijsi-07-2017-0043.

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Purpose During service period, the bridge structures will be affected by the environment and load, so the carrying capacity will decline. The purpose of this paper is to research on the bearing capacity of bridge structures with time. Design/methodology/approach Destructive test and non-linear finite element analysis are carried out by utilizing two pretensioning prestressed concrete hollow slabs in service for 20 years; using the structural test deflection value to simulate the stiffness degradation of the service bridge and the finite element calculation results verify the accuracy of the calculation. Findings The flexural rigidity of the main beam when the test beam is destructed is degraded to approximately 20 percent of that before the test, which agrees well with the result of finite element analysis and indicates that the method of deducing the flexural rigidity of the structure according to the measured deflection value can effectively simulate the rigidity degradation law of the bridge in service. The crack resistance property of the test beam degrades obviously and the ultimate bearing capacity of the bending resistance does not degrade obviously. Originality/value The research results truly reflect the destruction process, destructive form, bearing capacity and rigidity degradation law of the old beam of the concrete bridge in service for 20 years and can provide technical basis for optimization design of newly built bridges of the same type and maintenance and reinforcement design of existing old bridges.
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Wang, Jie, and Jian Xin Liu. "Calculation of Horizontal Rigidity of the Plate Type Elastomeric Pad Bearing for Highway Bridge." Applied Mechanics and Materials 204-208 (October 2012): 2244–47. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.2244.

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The plate type elastomeric pad bearing is the most commonly used in highway bridge bearings. In the seismic design of bridges, the horizontal rigidity of the bearing is an important calculation parameters. The specific values of each parameter in the formula are not clear, and it can not provide a clear computation measures, although the formula of horizontal rigidity is given in the specification. Against Series bearings in plate type elastomeric pad bearing for Highway Bridge (JT/T4-2004), the People's Republic of China Communications Industry Standard, the structural parameters of the bearing are systematically introduced, including the shape factor, the bearing thickness, the thickness of the single-layer rubber and the total thickness of rubber layer. The methodology and detailed steps of the bearing horizontal rigidity are then analyzed and summarized by the formulas above. At last several examples of the different type of bearings are given. Some reference are Provided for the calculation of the stiffness frequently of plate type elastomeric pad bearing which are frequently used for highway bridges.
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XIANG, J., and Q. Y. ZENG. "MECHANISM AND ENERGY RANDOM ANALYSIS OF TRAIN DERAILMENT ON RAILWAY BRIDGES." International Journal of Structural Stability and Dynamics 09, no. 04 (December 2009): 585–605. http://dx.doi.org/10.1142/s0219455409003193.

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In this paper, the mechanism of train derailment on bridge is developed by applying the system dynamics stability concepts. The theory of energy random analysis for train derailment on bridge is put forward. The contents of the theory are as follows: (1) establishing vibration equation set for the train–bridge system; (2) determining exciting source of transverse vibration of the system; (3) method of energy random analysis of transverse vibration of the system; (4) geometric rules of derailment; (5) calculation of the whole process of train derailment on bridge; (6) criteria of energy increment for judging train derailment on bridge. Finally, three cases concerning train derailment on bridges are treated that coincide with actual conditions. Some main conclusions obtained are: (1) insufficient transversal rigidity of bridge is the reason causing train derailment on bridge and (2) enhancing transversal rigidity of bridge is the main preventive measure against train derailment on bridge.
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Liang, Peng, Xiang Nan Wu, and Yue Xu. "Static and Dynamic Behaviours of Three-Tower Suspension Bridges and the Structure Selection of the Mid-Tower." Advanced Materials Research 163-167 (December 2010): 2343–49. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2343.

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In order to discuss the mechanical behaviour differences between the two-tower and three-tower suspension bridges, based on the Taizhou Yangtze River Bridge, three dimensional space finite element models of two-tower, three-tower with concrete mid-tower and with steel mid-tower were constructed. Through the comprehensive analysis, main conclusions are got as follows: due to the mid-tower lack of effective restraint from side cable, compared with two-tower suspension bridges, three-tower suspension bridges have lower total stiffness and natural frequency, with larger deflection-to-span ratio of main girder. So, some factors such as anti-slipping safety factor between the main cable and saddle, deflection-to-span ratio of main girder and force in mid-tower, which are not important in two-tower design, become controlling ones in three-tower suspension bridges. These factors are related to anti-pushing rigidity of mid-tower, but in contradictory demanding for the rigidity of mid-tower. After comprehensive analysis, steel tower with shape of upside-down ‘Y’ meets all demands, and then, was selected as appropriate structure for the mid-tower.
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Kleinas, Vilius. "Rational cross-sectional design and behavioural analysis of the low-sag stressed ribbon pedestrian bridges/Rationale Querschnittsbemessung und Verhaltensanalyse der Fußgänger-Spannbandbrücken mit geringem Durchhang." Bauingenieur 96, no. 04 (2021): 121–31. http://dx.doi.org/10.37544/0005-6650-2021-04-57.

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Stress ribbon bridges represent one of the simplest and the most efficient modern bridge constructions used in modern lightweight pedestrian bridges. The article presents an analysis of the stress ribbon bridge behaviour by applying different values of constant loads, assessing the possibilities of using steels and composite materials. The article presents the methodology for the rational cross-section and shape design of the low-sag stressed ribbon structure, based on the rigidity conditions. The article discusses the structure‘s behaviour in asymmetric loads and provides recommendations for Design.
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Dissertations / Theses on the topic "The rigidity of bridges"

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Sanroman, Cervero Claudia. "The influence of torsional resistance of the deck on the dynamic response of a high-speed railway bridge : Case study: Ulla River Viaduct." Thesis, KTH, Bro- och stålbyggnad, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210558.

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Understanding how different parameters affect the dynamic response of high-speed railway bridges is crucial to selecting an efficient structural form. Despite existing numerous publications within this field, only few address the importance of torsional deformations. The main objective of this thesis is to investigate the influence of the torsional resistance of the deck on the dynamic response of an existing bridge. Ulla River Viaduct is presented as a case study, allowing to analyse some aspects of its design and what their alteration entails. To this end, 6 different 3D FE models are compared, 5 of which show a modification from the original configuration. In addition, several positions of the train are considered to contrast the effects when the torsional modes are excited. The performed dynamic calculations are based on the implicit direct integration procedure. The analysis of the case study demonstrates the benefit of closing the torsional circuit of the deck. The results also evidence the need of including torsional effects in its dynamic assessment when low values of torsional rigidity are considered. All this is not easy when simplified 2D or 3D beam models are used. As a final remark, the original design of the Ulla River Viaduct is found highly efficient from a dynamical point of view.
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Kalkan, Ilker. "Lateral torsional buckling of rectangular reinforced concrete beams." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31788.

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Thesis (Ph.D)--Civil and Environmental Engineering, Georgia Institute of Technology, 2010.
Committee Chair: Zureick Abdul-Hamid; Committee Member: Ellingwood, Bruce R.; Committee Member: Kahn, Lawrence F.; Committee Member: Kardomateas, George A.; Committee Member: Will, Kenneth M. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Guler, Hakan. "Rigidity of frameworks." Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/36220.

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A d-dimensional (bar-and-joint) framework is a pair (G; p) where G = (V;E) is a graph and p : V > Rd is a function which is called the realisation of the framework (G; p). A motion of a framework (G; p) is a continuous function P : [0; 1] x V > Rd which preserves the edge lengths for all t 2 [0; 1]. A motion is rigid if it also preserves the distances between non-adjacent pairs of vertices of G. A framework is rigid if all of its motions are rigid motions. An in nitesimal motion of a d-dimensional framework (G; p) is a function q : V > Rd such that [p(u) - p(v)] ~ [q(u) - q(v)] = 0 for all uv 2 E. An in nitesimal motion of the framework (G; p) is rigid if we have [p(u) - p(v)] . [q(u) - q(v)] = 0 also for non-adjacent pairs of vertices. A framework (G; p) is in nitesimally rigid if all of its in nitesimal motions are rigid in nitesimal motions. A d-dimensional framework (G; p) is generic if the coordinates of the positions of vertices assigned by p are algebraically independent. For generic frameworks rigidity and in nitesimal rigidity are equivalent. We construct a matrix of size |E| xd|V| for a given d-dimensional framework (G; p) as follows. The rows are indexed by the edges of G and the set of d consecutive columns corresponds to a vertex of G. The entries of a row indexed by uv 2 E contain the d coordinates of p(u) - p(v) and p(v) - p(u) in the d consecutive columns corresponding to u and v, respectively, and the remaining entries are all zeros. This matrix is the rigidity matrix of the framework (G; p) and denoted by R(G; p). Translations and rotations of a given framework (G; p) give rise to a subspace of dimension d+1 2 of the null space of R(G; p) when p(v) affinely spans Rd. Therefore we have rankR(G; p) djV j�� d+1 2 if p(v) affinely spans Rd, and the framework is in infinitesimally rigid if equality holds. We construct a matroid corresponding to the framework (G; p) from the rigidity matrix R(G; p) in which F E is independent if and only if the rows of R(G; p) indexed by F are linearly independent. This matroid is called the rigidity matroid of the framework (G; p). It is clear that any two generic realisations of G give rise to the same rigidity matroid. In this thesis we will investigate rigidity properties of some families of frameworks. We rst investigate rigidity of linearly constrained frameworks i.e., 3- dimensional bar-and-joint frameworks for which each vertex has an assigned plane to move on. Next we characterise rigidity of 2-dimensional bar-and-joint frameworks (G; p) for which three distinct vertices u; v;w 2 V (G) are mapped to the same point, that is p(u) = p(v) = p(w), and this is the only algebraic dependency of p. Then we characterise rigidity of a family of non-generic body-bar frameworks in 3-dimensions. Finally, we give an upper bound on the rank function of a d-dimensional bar-and-joint framework for 1 < d < 11.
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Sait, Avais Kasim. "Rigidity of infinite frameworks." Thesis, Lancaster University, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.662190.

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This dissertation describes the rigidity theory of bar joint frameworks, especially infinite ones. The first chapter revises some of the well established results for finite frameworks. We then look at how this can be extended to the infinite case, specifically from the analysis point of view. In particular, we look at vanishing flexibility that is observed in some specific examples. Then we look at a proof of the sufficient condition for the existence of a flex in an infinite framework as described in Owen and Power [6]. In the fourth chapter we establish that the rigidity operator arising from the infinite matrix is bounded. 'Ve then observe its structure for specific examples. As decribed in [8], we describe the representation of the rigidity operator as a matrix valued function on the torus. Finally we look at the decomposition of the space of infinitesimal flexes for crystal frameworks in terms of a product basis.
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Stewart, Ian 1975. "The rigidity method and applications /." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30748.

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The Inverse Problem of Galois Theory is discussed. In a specific form, the problem asks whether every finite group occurs as a Galois group over Q . An intrinsically group theoretic property called rigidity is described which confirms that many simple groups are Galois groups over Q . Connections between rigidity and geometry are described and applications of rigidity are provided. In particular, after describing some of the theory of groups of Lie type, the rigidity criterion is applied to the exceptional Lie type groups G2(p), for primes p > 5. With the confirmation of a rationality condition, this establishes that G2(p) occurs as a Galois group over Q for all p > 5. Furthermore, the conjugacy classes which arise in the proof of rigidity for G2( p) are explored in detail, in the hope that a new proof might be produced which would illuminate the geometry associated to this rigid situation.
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Stewart, Ian. "The rigidity method and applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ64460.pdf.

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Rosu, Ioanid 1970. "Equivariant elliptic cohomology and rigidity." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85309.

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Havens, Paul C. Havens. "The Rigidity of the Sphere." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1461595829.

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Stewart, Colin 1976. "Universal deformations, rigidity, and Ihara's cocycle." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31545.

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In [Iha86b), Ihara constructs a universal cocycle GalQ/Q →Zp t0,t1 ,tinfinity /&parl0;t0+1 t1 +1tinfinity +1-1&parr0; arising from the action of Gal Q/Q on certain quotients of the Jacobians of the Fermat curves xpn+ypn=1 for each n ≥ 1. This thesis gives a different construction of part of Ihara's cocycle by considering the universal deformation of certain two-dimensional representations of IIQ, , where IIQ is the algebraic fundamental group of P1Q \0,1,infinity . More precisely, we determine, with and without certain deformation conditions, the universal deformation ring arising from a residual representation r:II Q→GL2 Fp Belyi˘'s Rigidity Theorem is used to extend each determinant one universal deformation to a representation of IIK, where K is a finite cyclotomic extension of Qmpinfinity . For a particular r , we give a geometric construction of one such extended universal deformation r , and show that part of Ihara's cocycle can be recovered by specializing r at infinity.
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Ho, Wing-lam. "Flexural rigidity of nickel-titanium instruments." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B31954297.

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Books on the topic "The rigidity of bridges"

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Graver, Jack E. Combinatorial rigidity. Providence, RI: American Mathematical Society, 1993.

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Ren, Mu. Beyond Rigidity. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4623-9.

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Servatius, Brigitte. Rigidity & braced grids. Lexington, MA: COMAP, 1995.

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Connelly, Robert, Asia Ivić Weiss, and Walter Whiteley, eds. Rigidity and Symmetry. New York, NY: Springer New York, 2014. http://dx.doi.org/10.1007/978-1-4939-0781-6.

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Thorpe, M. F., and P. M. Duxbury, eds. Rigidity Theory and Applications. Boston: Kluwer Academic Publishers, 2002. http://dx.doi.org/10.1007/b115749.

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Athey, Susan. Collusion and price rigidity. Cambridge, Mass: Massachusetts Institute of Technology, 1998.

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Bewley, Truman F. Fairness, reciprocity, and wage rigidity. Bonn, Germany: IZA, 2004.

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Geometry, rigidity, and group actions. Chicago: The University of Chicago Press, 2011.

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Rankin, Neil. Nominal rigidity and monetary uncertainty. Coventry: Warwick University, Department of Economics, 1993.

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Burger, Marc, and Alessandra Iozzi, eds. Rigidity in Dynamics and Geometry. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04743-9.

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Book chapters on the topic "The rigidity of bridges"

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Gao, M. M., J. Y. Pan, and Y. Q. Yang. "Effect of foundation rigidity on train-bridge coupling vibration response." In Environmental Vibrations: Prediction, Monitoring, Mitigation and Evaluation (ISEV 2005), 243–48. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003209379-37.

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Abdulazeez, Mohanad M., and Mohamed A. ElGawady. "Flexural Rigidity Evaluation of Seismic Performance of Hollow-Core Composite Bridge Columns." In International Congress on Polymers in Concrete (ICPIC 2018), 627–34. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-78175-4_80.

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Kruse, H. P., and J. Scheurle. "On the Bifurcation and Stability of Rigidly Rotating Inviscid Liquid Bridges." In Mechanics: From Theory to Computation, 515–32. New York, NY: Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1246-1_18.

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Gao, Mangmang, Jiaying Pan, and Yiqian Yang. "Research on Rigidity Limits of Bridge with Conventional Spans for Chinese High-speed Railway." In Computational Methods in Engineering & Science, 229. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-48260-4_75.

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Hohler, Anna DePold, and Marcus Ponce de Leon. "Rigidity." In Encyclopedia of Clinical Neuropsychology, 3030–31. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-57111-9_480.

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Rindler, Filip. "Rigidity." In Universitext, 185–225. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77637-8_8.

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Floresco, Stan, Robert Kessler, Ronald L. Cowan, Robert Kessler, Ronald L. Cowan, Mark Slifstein, Andrea Cipriani, et al. "Rigidity." In Encyclopedia of Psychopharmacology, 1157. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-68706-1_952.

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Roe, John. "Rigidity." In University Lecture Series, 111–27. Providence, Rhode Island: American Mathematical Society, 2003. http://dx.doi.org/10.1090/ulect/031/08.

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Kline, Paul. "Rigidity." In Encyclopedia of psychology, Vol. 7., 106–7. Washington: American Psychological Association, 2000. http://dx.doi.org/10.1037/10522-040.

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Hohler, Anna DePold, and Marcus Ponce de Leon. "Rigidity." In Encyclopedia of Clinical Neuropsychology, 2181. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-79948-3_480.

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Conference papers on the topic "The rigidity of bridges"

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Novarin, Marco, Julien Erdogan, Nicolas Fabry, Michal Ambor, and Sébastien Petit. "High Rigidity Suspension Bridges." In IABSE Symposium, Nantes 2018: Tomorrow’s Megastructures. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/nantes.2018.s12-17.

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Wei Zhang and Zonglin Wang. "Flexural rigidity of segmental joints in cantilever casting concrete bridges." In 2011 International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2011. http://dx.doi.org/10.1109/rsete.2011.5964742.

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Takahashi, Yusuke, Yusuke Imagawa, and Osamu Ohyama. "Analytical study on evaluation of residual strength for steel-concrete composite girder bridge after fire." In IABSE Congress, Christchurch 2021: Resilient technologies for sustainable infrastructure. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2021. http://dx.doi.org/10.2749/christchurch.2021.0729.

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<p>Fire damage to bridges occurs frequently in Japan and in other countries. Previous bridge fire accidents suggest that it is important to understand the structural performance of the bridges after their exposure to fire. The authors have studied the evaluation of the stress of the steel- concrete composite girder bridges as a simply supported bridge damaged by fire. First of all, fire test was carried out to clarify the temperature distribution of the composite girder and a static loading tests before and after fire were conducted to confirm the effect of the reduction of rigidity from fire. Next, numerical analysis was carried out to indicate the stress distribution and deflection on the composite girder bridge from live load after fire.</p>
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GRIGORJEVA, Tatjana, and Zenonas KAMAITIS. "Effects of Cable Flexural Rigidity on the Free Vibrations of Suspension Bridges." In 2014 International Conference on Mechanics and Civil Engineering (icmce-14). Paris, France: Atlantis Press, 2014. http://dx.doi.org/10.2991/icmce-14.2014.7.

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He, Xiong-jun, Ping Zhou, Ji-lin Shao, and Jiu-si Liu. "Appraisement Method of Integral Rigidity of Navigation Channel Bridges Based on Ambient Vibration Signals." In First International Conference on Transportation Information and Safety (ICTIS). Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41177(415)352.

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Wu, Haoyan, Ye Xia, Xin Yi, and Pingkuan Sun. "Effects of Median Strip Connecting Twin Bridges on Dynamic Performance." 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.2019.0643.

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<p>The median strip connecting twin bridges has effects on the rigidity and dynamic characteristics of the bridges, but the effects are usually ignored, resulting in unexpected dynamic performance or even structural resonance. In this paper, the mechanism of median strips as a connection role between twin bridges is analyzed. Finite element models of the twin bridges and median strip are developed to analysis the effects on the overall system. Experimental study of typical twin bridges with a median strip was conducted to explore the relationship between the median strip and the vibration. Based on these analyses, recommendations related to overall structural performance are made to ensure a safe and rational design for twin bridges with median strip especially on dynamic performance in the future.</p>
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Wu, Xun, and Xin Yuan. "Research on Rigidity Distribution between Arch and Girder for Tied Arch Bridges with Trough Girder." In 2015 International Conference on Materials, Environmental and Biological Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/mebe-15.2015.230.

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Bouvet, Caroline, Thierry Delémont, and Pierre Moïa. "Lanciau Bridge – First spatial tubular truss railway bridge." 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.2019.2767.

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<p>The old Lanciau bridge, constructed in 1904, needed to be replaced by a new bridge which would allow for a continuous ballasted track.</p><p>The new bridge was designed with a view to maintaining the spirit of the old one by keeping a truss structure, while modernizing it both from the point of view of its shape (spatial triangular truss with variable height) and its sections (pipes). It took advantage of the presence of the concrete trough to connect this to the steel truss, in order to increase the rigidity of the bridge with the composite effect.</p><p>This bridge is one of the very first railway bridges made of tubular truss, which provides a pure and smooth design thanks to its compact and pure assembling nodes.</p><p>The new truss structure is really the key point of this bridge because of the tubular nodes which do not meet any standards. In particular, the fatigue resistance analysis of the 3D tubular nodes required the application of very specific documentation and results from PhD’s, as well as the use of volume finite element computations.</p><p>The new Lanciau bridge is now ready to service MOB panoramic trains, and to continue the tradition of Swiss alpine steel railway bridges.</p>
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Lin, Weiwei, Nozomu Taniguchi, and Teruhiko Yoda. "A Long-life Maintenance Strategy for Existing Steel Railway Structures in Japan." 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.2019.1783.

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<p>Since Japan’s first rail line between Shinbashi and Yokohama opened on 14 October 1872, Japanese National Railways (JNR) has been expanding the railway network using many short span railway bridges. As a result, some of existing railway bridges become old nowadays. With aging, deterioration resulting from fatigue and corrosion becomes a severe problem and seriously affects the serviceability and durability of bridges. Therefore, appropriate preventive maintenance or strengthening should be performed on aged steel railway structures to ensure their reliability and safety in service condition. On this background, a maintenance method for existing steel railway bridges using rubber-latex mortar, Glass Fiber Reinforced Polymer (GFRP) plates, lightweight rapid hardening concrete, and reinforcement, was reported in this study. Both field tests and numerical analyses were performed to confirm the actual effectiveness of this strengthening method. According to the results obtained from this study, the present renovation method can greatly enhance the rigidity and reduce the stress levels of old steel railway bridges, resulting in the extension of their residual service lives.</p>
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Jaksic, Vesna, Vikram Pakrashi, and Alan O’Connor. "Employing Surface Roughness for Bridge-Vehicle Interaction Based Damage Detection." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64744.

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Damage detection and Structural Health Monitoring (SHM) for bridges employing bridge-vehicle interaction has created considerable interest in recent times. In this regard, a significant amount of work is present on the bridge-vehicle interaction models and on damage models. Surface roughness on bridges is typically used for detailing models and analyses are present relating surface roughness to the dynamic amplification of response of the bridge, the vehicle or to the ride quality. This paper presents the potential of using surface roughness for damage detection of bridge structures through bridge-vehicle interaction. The concept is introduced by considering a single point observation of the interaction of an Euler-Bernoulli beam with a breathing crack traversed by a point load. The breathing crack is treated as a nonlinear system with bilinear stiffness characteristics related to the opening and closing of crack. A uniform degradation of flexural rigidity of an Euler-Bernoulli beam traversed by a point load is also considered in this regard. The surface roughness of the beam is essentially a spatial representation of some spectral definition and is treated as a broadband white noise in this paper. The mean removed residuals of beam response are analyzed to estimate damage extent. Uniform velocity and acceleration conditions of the traversing load are investigated for the appropriateness of use. The detection and calibration of damage is investigated through cumulant based statistical parameters computed on stochastic, normalized responses of the damaged beam due to passages of the load. Possibilities of damage detection and calibration under benchmarked and non-benchmarked cases are discussed. Practicalities behind implementing this concept are also considered.
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Reports on the topic "The rigidity of bridges"

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Moszoro, Marian, Pablo Spiller, and Sebastian Stolorz. Rigidity of Public Contracts. Cambridge, MA: National Bureau of Economic Research, May 2015. http://dx.doi.org/10.3386/w21186.

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Carlton, Dennis. The Rigidity of Prices. Cambridge, MA: National Bureau of Economic Research, January 1986. http://dx.doi.org/10.3386/w1813.

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Genesove, David. The Nominal Rigidity of Apartment Rents. Cambridge, MA: National Bureau of Economic Research, May 1999. http://dx.doi.org/10.3386/w7137.

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Rotemberg, Julio, and Garth Saloner. The Relative Rigidity of Monopoly Pricing. Cambridge, MA: National Bureau of Economic Research, June 1986. http://dx.doi.org/10.3386/w1943.

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Schoefer, Benjamin. The Financial Channel of Wage Rigidity. Cambridge, MA: National Bureau of Economic Research, August 2021. http://dx.doi.org/10.3386/w29201.

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Demina, O. A., and S. A. Bakhtin. Tutorial Bridges, tunnels. OFERNIO, July 2020. http://dx.doi.org/10.12731/ofernio.2020.24544.

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ABERDEEN TEST CENTER MD SUPPORT EQUIPMENT DIV. Bridges and Equipment. Fort Belvoir, VA: Defense Technical Information Center, September 2009. http://dx.doi.org/10.21236/ada505642.

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Nakamura, Emi, and Jón Steinsson. Price Rigidity: Microeconomic Evidence and Macroeconomic Implications. Cambridge, MA: National Bureau of Economic Research, January 2013. http://dx.doi.org/10.3386/w18705.

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Borcea, Ciprian S., and Ileana Streinu. Combinatorial and Algorithmic Rigidity: Beyond Two Dimensions. Fort Belvoir, VA: Defense Technical Information Center, December 2012. http://dx.doi.org/10.21236/ada579251.

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Kaur, Supreet. Nominal Wage Rigidity in Village Labor Markets. Cambridge, MA: National Bureau of Economic Research, December 2014. http://dx.doi.org/10.3386/w20770.

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