|Table of Contents|

Mechanical Performance Analysis of Pre-stressed Continuous Beam Bridge Under Fire(PDF)

Journal of Xiamen University(Natural Science)[ISSN:0438-0479/CN:35-1070/N]

Issue:
2017 04
Page:
611-616
Research Field:
Research Notes
Publishing date:
2017-07-26

Info

Title:
Mechanical Performance Analysis of Pre-stressed Continuous Beam Bridge Under Fire
Article ID:
0438-0479(2017)04-0611-06
Author(s):
SHAO WenjunSONG Yu*
School of Architecture and Civil Engineering,Xiamen University,Xiamen 361005,China
Keywords:
continuous beam bridge pre-stress fire temperature field stress field
CLC number:
TU 37
DOI:
10.6043/j.issn.0438-0479.201612005
Document code:

A
Abstract:
For the purpose of studying the effect of fire on mechanical properties of pre-stressed concrete continuous girder bridges,the boundary condition of the model is imposed by referring to data and results of the bridge fire.Constitutive models of the concrete and pre-stressed tendons are adopted and analyzed.Meanwhile,thermal parameters of the concrete and steel bars are also considered.Through the analysis of the transient temperature range of the bridge in the fire,changes of temperature according to time and space are obtained respectively.The mechanical performance of the bridge in normal temperature and fire temperature are also compared under the action of weight and lane loads,concrete,pre-stress tendons and so forth.In this paper,we have analyzed the influence of the fire on the material,and the influence of the temperature field on the stress range of the bridge is obtained.This analysis model can be used as a reference for the reparation,reinforcement,and fire resistance of the bridge.

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Memo

Memo:
收稿日期:2016-12-05 录用日期:2017-02-23
基金项目:福建省自然科学基金青年创新项目(2016J05136)
*通信作者:songyu@xmu.edu.cn
Last Update: 1900-01-01