某特大桥过火桥墩有限元模拟分析

Finite Element Simulation Analysis on Over-fire Pier of a Super Large Bridge

摘要:

以某特大桥墩身火灾为案例，介绍此类工程现场调查内容，然后基于通用有限元软件ABAQUS对火灾时墩身温度场进行模拟分析，与现场调查实况进行对比后确定墩身大致火损情况，在此基础上再用ABAQUS对其进行简化建模并进行静力及频率分析，总结分析结果后提出对应加固建议，可为后续相关工程案例提供研究及加固的思路与参考。

Abstract:

Taking a pier fire of a super-large bridge as a case, the field investigation of this bridge is introduced. And based on the general finite element software ABAQUS, the temperature field of the pier during the fire is simulated and analyzed. The approximate fire damage situation of piers is determined after the comparison of the actual field investigation. On this basis, ABAQUS is used to conduct the simplified modeling and static and frequency analysis. The analysis result is summarized and the corresponding reinforcement suggestions are put forward, which can provide the ideas and reference for the research and reinforcement of the subsequent related engineering cases.