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Seismic Performance Analysis for Long-span CFST Stiff-Skeleton Arch Bridge

Author: LiuJinJun
Tutor: LiYaDong
School: Southwest Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Strength - Frame Arch Dynamic Characteristics Analysis Response spectrum method Time history analysis Earthquake response
CLC: U442.55
Type: Master's thesis
Year: 2011
Downloads: 40
Quote: 0
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Abstract


Due to the interaction of steel and concrete , steel pipes the ferrule role can enhance the compression performance of concrete , concrete steel pipe can improve the stability of the steel pipe , therefore, exhibit good mechanical properties of steel pipe reinforced with concrete ; On the other hand , due to the stiff skeleton Arch Bridge arch bridge to the development of large -span direction it possible , therefore , force frame arch bridge at home and abroad , the rapid development of . The good quality of the steel pipe reinforced with concrete makes the force frame arch bridge force showed good performance and practicability , widely used in practice . Therefore, the study of the seismic performance has important practical significance and practical value . This article briefly describes the development and current status of the force frame arch bridge , expounded the basic theory and method for solving stiff skeleton and Dynamic Analysis of seismic analysis theory of finite element method . Jianzhong Guangyuan Zhaohua Jialing River Bridge as the background, Midas / Civil 2010 structural analysis program to establish the the bridge calculation analysis model , combination the bridge actual characteristics of the seismic performance of the bridge analysis study : ( 1 ) through to the bridge dynamic characteristics analysis , given the bridge 's natural vibration modes and mode shapes , large span the force frame arch bridge dynamic characteristics of the general law , by contrast Naked Arch and dynamic characteristics of the bridge , to study the dynamic characteristics lay the foundation for the seismic analysis and research . (2) The earthquake response spectrum analysis method development and theory , analysis , research the seismic performance specification response spectrum E1 and E2 levels elastic response of the bridge . (3)) based on the time history analysis method , namely El-Centro wave and the Wenchuan earthquake wave that bridge seismic loads , internal forces and displacements of the arch rib structure structure analysis and calculation results of the response spectrum method of calculation results comparative analysis . Analysis Reinforced with earthquake force , provide a reference for Guangyuan zhaohua bridge design, construction ; provide a reference for similar bridge seismic analysis and design .

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CLC: > Transportation > Road transport > Bridges and Culverts > Investigation, design and calculation > Bridge Design > Damage Analysis and Seismic Design
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