Seismic Response Analysis of High Pier and Long Span Rigid Framed Bridge under Non Uniform Excitation

2012 ◽  
Vol 193-194 ◽  
pp. 1315-1319 ◽  
Author(s):  
Can Bin Yin ◽  
Fang Yu
Keyword(s):  
Seismic Response ◽  
Horizontal Displacement ◽  
Travelling Wave ◽  
Bridge Piers ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Long Span ◽  
Wave Effects ◽  
High Pier ◽  
Travelling Wave Effect

Taking the Longtan River Bridge as the engineering background , the seismic response analysis of high-pier and long-span continuous rigid-framed bridge considering travelling wave effect is simulated by means of the great mass method . Conclusions are drawn under asynchronous and synchronous excitation respectively , between which comparison indicates that the seismic responses for the main beams of continuous rigid-framed bridge are decreased at various degrees , such as the longitudinal horizontal displacement . The travelling wave effects on the piers are also related to the characteristics and locations of the bridge piers and so on .

scholarly journals Simulation of the In Situ Spatially Varying Ground Motions and Nonlinear Seismic Response Analysis of the Cable-Stayed Bridge

2020 ◽  
Vol 2020 ◽  
pp. 1-19
Author(s):  
Jin Zhang ◽  
Ke-jian Chen ◽  
Neng-pan Ju ◽  
Shi-xiong Zheng ◽  
Hong-yu Jia ◽  
...  
Keyword(s):  
Seismic Response ◽  
Ground Motions ◽  
Element Model ◽  
Response Analysis ◽  
Seismic Response Analysis ◽  
Nonlinear Seismic Response ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Wave Effects

To study the nonlinear seismic behavior and seismic resistance of the long-span cable-stayed bridges subjected to earthquakes, the multidimensional and multisupported artificial ground motions are synthesized first based on the in situ site conditions of the bridge considering the coherent and traveling wave effects. Then, considering the material nonlinearity of the cable-stayed bridge, a 3D finite element model is established based on the OpenSees platform, and the nonlinear seismic response analysis of the bridge is carried out under the synthetic artificial ground motions. The nonlinear seismic response of main bridge components such as piers, towers, bearings, and cables is analyzed, and key conclusions and observations are drawn.

Random Seismic Response Analysis of Long-Span Bridge Structures

2012 ◽  
Vol 204-208 ◽  
pp. 2157-2161 ◽  
Author(s):  
Zhang Jun Liu ◽  
Yan Fu Xing ◽  
Yong Wan
Keyword(s):  
Seismic Response ◽  
Independent Random Variables ◽  
Response Analysis ◽  
Orthogonal Expansion ◽  
Bridge Structure ◽  
Seismic Response Analysis ◽  
Long Span ◽  
Long Span Bridge ◽  
Bridge Structures ◽  
Random Seismic Response

Based on the orthogonal expansion method of stochastic processes, seismic acceleration processes can be represented as a linear combination of deterministic functions modulated by a set of mutually independent random variables. In conjunction with the probability density evolution method, the random seismic response of bridge structures can be successfully researched. A long-span bridge structure is taken as an example. The probabilistic information of the response of a long-span bridge structure in different control under earthquake excitations is investigated. The investigation provides a new approach to the random seismic response analysis of long-span bridge structures.

Elaborate Failure Model and Seismic Response Analysis for Multi-Story Masonry Building with R. C. Frames on Ground Floor

2013 ◽  
Vol 753-755 ◽  
pp. 504-507 ◽  
Author(s):  
Duo Zhi Wang ◽  
Jun Wu Dai ◽  
Chen Xiao Zhang
Keyword(s):  
Seismic Response ◽  
Horizontal Displacement ◽  
Shear Wall ◽  
Seismic Damage ◽  
Response Analysis ◽  
Masonry Building ◽  
Failure Model ◽  
Seismic Response Analysis ◽  
Ground Floor ◽  
Floor Structure

Framed-Ground Floor Structure for short which has serious seismic damage and high collapsed rate, is the unreasonable structure system. The experiences is 1. The shear wall can be increased to improve stiffness of weak layer. And designer should try to arrange the walls equably. 2. In order to avoid stiffness mutation, stiffness ratio between ground frame and transition layer can be adjusted. 3. Collapse resistant design of Framed-Ground Floor Structures should be emphasized. Then seismic response analysis is conducted by ANSYS. And the seismic response is little, and strength damage or stable damage do not occur for the little acceleration peak. Along with the increasing acceleration peak, The bigger horizontal displacement leads to damage of Framed-Ground Floor Structures. Moreover, the damage is in advance as the increasing acceleration peak.

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