现役结构增层刚度时变可靠性分析  

Time-dependent reliability analysis of stiffness of adding storey onto in-service structure

作　　者：李艺[1] 闫运起[2] 赵文[1] 

机构地区：[1]东北大学资源与土木工程学院,沈阳110004 [2]辽宁省建设科学研究院,沈阳110003

出　　处：《吉林大学学报（工学版）》2009年第2期398-401,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50508008);辽宁省博士启动基金项目(20041014);辽宁省自然科学基金项目(20082024);东北大学博士后科研基金项目(20060125)

摘　　要：基于现役结构的服役状态具有显著的时变性,提出增层改造项目必须考虑时间因素影响的观点。针对现今刚度可靠性分析处于相对匮乏的研究阶段,根据现役结构荷载、抗力的固有特点,考虑计算模式不确定性、材料性能劣化、构件几何尺寸损伤等多因素影响机制,对现役结构增层进行了动态可靠性分析,并给出了现役结构增层刚度影响因素的时变规律。Based on the distinct time-dependent feature of the structure service state,a viewpoint was presented that the aging effect on retrofit of the building by adding a storey must be considered.In view of the shortage of the reliability analysis on the stiffness,based on the intrinsic features of the loading and the resistance of the in-service structure,a dynamic reliability analysis was done for adding a storey onto an in-service structure.In the analysis many factors including the uncertainty of the calculat...

关 键 词：土木建筑工程 可靠性分析 刚度 现役结构 增层 时变参数 

分 类 号：TU311.2[建筑科学—结构工程]