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火灾场冲击波荷载作用下简支钢梁动力响应
引用本文:王振清,韩玉来,王永军,苏娟.火灾场冲击波荷载作用下简支钢梁动力响应[J].振动与冲击,2007,26(4):69-72.
作者姓名:王振清  韩玉来  王永军  苏娟
作者单位:哈尔滨工程大学建筑工程学院,哈尔滨,150001
基金项目:哈尔滨工程大学校科研和教改项目
摘    要:根据火灾场不同时刻温度的变化,考虑火灾高温对结构钢弹性模量、屈服强度和钢梁塑性弯矩的影响,分析了火灾场中冲击波荷载作用下简支钢梁各个阶段不同时刻的动力响应,通过具体算例计算了火灾场工字形简支钢梁在冲击波荷载作用下弹性阶段和塑性阶段的变形,分析表明在计算火灾场冲击波荷载作用下简支钢梁的动力响应时,火灾高温对结构钢的弹性模量、屈服强度以及梁的塑性弯矩和动力响应有显著的影响。

关 键 词:火灾场  弹性模量  屈服强度  塑性弯矩  钢梁  冲击波  动力响应
修稿时间:06 8 2006 12:00AM

DYNAMIC RESPONSE OF A STEEL BEAM SIMPLY SUPPORTED UNDER SHOCK WAVE IN FIRE FIELD
WANG Zhen-qing,HAN Yu-lai,WANG Yong-jun,SU Juan.DYNAMIC RESPONSE OF A STEEL BEAM SIMPLY SUPPORTED UNDER SHOCK WAVE IN FIRE FIELD[J].Journal of Vibration and Shock,2007,26(4):69-72.
Authors:WANG Zhen-qing  HAN Yu-lai  WANG Yong-jun  SU Juan
Abstract:In analyzing the deformation of a steel beam simply supported under shock wave in fire field,influence of high temperature on Young's modulus of its material is taken into account.Based on it,dynamic response of the beam in different phases of its material is investigated.A numerical example is given.The elastic and plastic deformation of the beam under shock wave in fire field are calculated.It is shown that high temperature can influence Young's modulus and dynamic response of the beam remarkably.
Keywords:fire field  Young's modulus  steel beam  shock wave  dynamic response
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