The Application of E Shaped Steel Bearing on the Simply Supported Beam Bridge

2011 ◽  
Vol 90-93 ◽  
pp. 3141-3144
Author(s):  
Ling Jun Kong ◽  
Yan Bei Chen ◽  
Jun Liu ◽  
Qi Bin Jiang
Keyword(s):  
Computational Models ◽  
Time History ◽  
Earthquake Response ◽  
Bending Moments ◽  
Shear Forces ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Related Data ◽  
Nonlinear Time History ◽  
Beam Bridge

To study the application of E shaped steel bearing on the simply supported beam bridge, the Xinhua bridge is analyzed by the nonlinear time-history method and the Midas/Civil software, considering the interaction between pile and soil. The related data are obtained through two computational models. And the data are compared in this paper. The results show that the bending moments and shear forces of the bottom of the fixed pier are reduced, due to using the E shaped steel bearing at the fixed pier. The E shaped steel bearing dissipates the earthquake energy and reduces the earthquake response of the bridge.

The Anti-Seismic Analysis of the Lock-up Device on the Arch Bridge

2011 ◽  
Vol 368-373 ◽  
pp. 1047-1050
Author(s):  
Ling Jun Kong ◽  
Yan Bei Chen ◽  
Peng Li ◽  
Qi Bin Jiang
Keyword(s):  
Seismic Performance ◽  
Computational Models ◽  
Seismic Analysis ◽  
Time History ◽  
Bending Moments ◽  
Shear Forces ◽  
Arch Bridge ◽  
Nonlinear Time History Analyses ◽  
Nonlinear Time History

To study the anti-seismic performance of Lock-up device, the two computational models which are respectively uninstalled Lock-up device and installed Lock-up device on the arch bridge are established. Nonlinear time-history analyses are carried out by the Midas/Civil software in this paper. The interaction between pile and soil is considered in the analyses. The results show that the maximum shear forces of the tops and the maximum bending moments of the bottoms of all piers are quite uniform after the LUD are installed and that the displacements of the top of the fixed pier has been decreased.

The Anti-Seismic Performance of the Multi-Layer Frame-Bent Industrial Factory

2012 ◽  
Vol 256-259 ◽  
pp. 2040-2046
Author(s):  
Jun Liu ◽  
Ling Jun Kong
Keyword(s):  
Seismic Performance ◽  
Hysteresis Loops ◽  
Time History ◽  
Earthquake Response ◽  
Bending Moments ◽  
The South ◽  
Shear Forces ◽  
Earthquake Energy ◽  
Large Hysteresis ◽  
Nonlinear Time History

The multi-layer frame-bent industrial factory is a new structure, in the south of China. The anti-seismic performance of longitudinal and transverse directions of the factory is analyzed by SAP2000 software and nonlinear time-history method, in this paper. The S shaped steel dampers are used to the factory. The results show that the application of the S shaped steel dampers reduced shear forces and bending moments of the pillars bottoms and displacements of the floors of the factory; the S shaped steel dampers formed large hysteresis loops, dissipated earthquake energy and reduced the earthquake response of the factory.

scholarly journals Effect of Material Characteristics of High Damping Rubber Bearings on Aseismic Behaviors of a Two-Span Simply Supported Beam Bridge

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Yumin Zhang ◽  
Jiawu Li
Keyword(s):  
Time History ◽  
Bending Moment ◽  
Seismic Energy ◽  
Northridge Earthquake ◽  
Horizontal Shear ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
High Damping Rubber ◽  
Rubber Bearings ◽  
Beam Bridge

There are a large number of damping materials in high-damping rubber (HDR) bearings, so the HDR bearings have the characteristics of both common rubber bearings and damping measures and show good aseismic effect. In this paper, the time-history dynamic analysis method is used to study the seismic effects of HDR bearings on the aseismic behaviors of two-span simply supported beam bridge under Northridge earthquake by changing the damping characteristics of the bearings. It is found that, with increasing damping of the bearings, both the horizontal shear and the displacement of the HDR bearings decrease, and the seismic energy dissipates through both the yield deformation and damping of the bearings. Although the girder and bearings have smaller displacement, when the HDR bearings with larger damping, the seismic responses, including displacement of pier top, shear force of pier bottom, and bending moment of pier bottom, are hardly affected by the change of the damping of the bearings. The HDR bearings with higher damping and yield characteristics separate and dissipate the seismic energy transmitted to the superstructure of the bridge and have better seismic effect on the structure in an earthquake.

The Anti-Seismic Performance of the Viscous Damper and E Shaped Steel Bearing

2011 ◽  
Vol 368-373 ◽  
pp. 1117-1120
Author(s):  
Ling Jun Kong ◽  
Yan Bei Chen ◽  
Xiang Liang Ning ◽  
Qi Bin Jiang
Keyword(s):  
Seismic Performance ◽  
Computational Models ◽  
Hysteresis Loops ◽  
Time History ◽  
Viscous Damper ◽  
Related Data ◽  
Large Hysteresis ◽  
Continuous Girder Bridge ◽  
Girder Bridge ◽  
Nonlinear Time History

To study the anti-seismic performance of the viscous damper and the E shaped steel bearing on the continuous girder bridge, two models of the Taibai bridge located in Xi’an are analyzed by the nonlinear time-history method and the Midas/Civil software, considering the interaction between pile and soil. The related data are obtained through the two computational models. The results show that the bending moments and shear forces of the bottom of the fixed pier are reduced and it is effective to reduce the displacements of the top of the fixed pier and the end of the girder. And, the viscous damper and the E shaped steel bearing form the large hysteresis loops, dissipate the earthquake energy and reduce the earthquake response of the bridge.

Large Deflection of a Rectangular Plate Resting on a Pasternak-Type Elastic Foundation

1977 ◽  
Vol 44 (3) ◽  
pp. 509-511 ◽  
Author(s):  
P. K. Ghosh
Keyword(s):  
Rectangular Plate ◽  
Elastic Foundation ◽  
Large Deflection ◽  
Lateral Load ◽  
Bending Moments ◽  
Shear Forces ◽  
Simply Supported ◽  
Base Parameters ◽  
Square Plate

The problem of large deflection of a rectangular plate resting on a Pasternak-type foundation and subjected to a uniform lateral load has been investigated by utilizing the linearized equation of plates due to H. M. Berger. The solutions derived and based on the effect of the two base parameters have been carried to practical conclusions by presenting graphs for bending moments and shear forces for a square plate with all edges simply supported.

The Natural Frequency Calculation Method of Simply-Supported Beam in the Sunshine Temperature Field

2013 ◽  
Vol 394 ◽  
pp. 364-367
Author(s):  
Yong Chun Cheng ◽  
Yu Ping Shi ◽  
Guo Jin Tan
Keyword(s):  
Temperature Field ◽  
Calculation Method ◽  
Natural Frequencies ◽  
Bernoulli Model ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Frequency Calculation ◽  
Natural Frequency Calculation ◽  
Beam Bridge ◽  
T Beam

The related researches show that , the sunshine temperature field can cause the changes of the natural frequencies of the simply-supported beam. In order to recover the influence law of the temperature field on the natural frequencies, the calculation method of the natural frequencies of the simply-supported beam bridge is formed. First, according to the principles of stress equivalence, transform the sunshine temperature field to the partiality axis forces. Based on the Bernoulli model, the calculation method of the natural frequencies of the simply-supported beam under the partiality axis forces at both ends is formed. At last, take one simply-supported T beam as the object of numerical modeling and verify the validity and the reliability of this method.

Research Review of Seismic Failure Mode of Abutment and Influence on Deck Fall-Off

2011 ◽  
Vol 90-93 ◽  
pp. 1467-1472
Author(s):  
Xiao Li Li ◽  
Dong Liang Li ◽  
Dong Sheng Wang ◽  
Zhi Guo Sun
Keyword(s):  
Failure Modes ◽  
Seismic Analysis ◽  
Time History ◽  
Research Review ◽  
Displacement Curve ◽  
Strength Failure ◽  
Bridge Span ◽  
Bearing Stiffness ◽  
Nonlinear Time History ◽  
Beam Bridge

Well seismic performance of abutment were safety precondition of whole bridge. According to destroyed multi-span simple beam bridge of Wenchuan earthquake, failure modes of abutment were summarized. On the basis of correlation literature home and overseas, analysis methods of abutment seismic research were investigated. Nether factors should be take into account : soil-abutment interaction, abutment stiffness, bridge span number, pier’s force-displacement curve , bearing stiffness and etc.. Interspace model of seismic analysis were constituted and nonlinear time history adopted, so mechanism of abutment failure modes(strength failure, whole slide and admixture failure )was obtained. Control variables between beam and abutment were discussed. Those variables were keys of research influence on fall-off by abutment failure.

scholarly journals Seismic Collapse Analysis of RC Highway Bridges Based on a Simplified Multiscale FE Modeling Approach

2017 ◽  
Vol 2017 ◽  
pp. 1-19
Author(s):  
Menghan Hu ◽  
Qiang Han ◽  
Xiuli Du ◽  
Xiao Liang
Keyword(s):  
Computational Efficiency ◽  
Highway Bridges ◽  
Multiscale Model ◽  
Fe Modeling ◽  
Simply Supported Beam ◽  
Shell Elements ◽  
Simply Supported ◽  
Beam Elements ◽  
Seismic Collapse ◽  
Beam Bridge

Multiscale finite element (FE) modeling offers a balance between computational efficiency and accuracy in numerical simulations, which is appropriate for analysis of seismic collapse of RC highway bridges. Some parts of structures that need detailed analysis can be modeled by solid elements, while some subordinate parts can be simulated by beam elements or shell elements to increase the computational efficiency. In the present study, rigid surface coupling method was developed to couple beam elements with solid elements using the LS-DYNA software. The effectiveness of this method was verified by performing simulation experiments of both a single-column pier and a two-span simply supported beam bridge. Using simplified multiscale FE modeling, analyses of collapse and local failure of a multispan simply supported beam bridge and a continuous rigid frame bridge were conducted to illustrate the approach in this paper. The results demonstrate that the simplified multiscale model reasonably simulates the collapse process and local damage of complex bridges under seismic loading.

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