隔震技术在云南某办公楼加固工程中的应用与分析  

Application and analysis of isolation technique in reinforcement engineering of an office building in Yunnan

作　　者：张龙飞[1,2] 陶忠[1] 

机构地区：[1]昆明理工大学建筑工程学院,昆明650011 [2]云南震安减震科技股份有限公司,昆明650011

出　　处：《建筑结构》2016年第5期24-28,共5页Building Structure

基　　金：国家科技支撑计划项目(2012BAJ07B02);国家科技支撑计划项目(2013BAK13B00)

摘　　要：某办公楼为8层混凝土现浇框架结构,建于1989年,经抗震鉴定其抗震性能不满足现行规范要求,需进行抗震加固。为减少对上部建筑使用功能的影响,降低综合造价,缩短加固施工周期,对其采用隔震技术进行加固。建立了办公楼三维有限元模型,分析了隔震层的抗风性能,通过非线性时程分析法得到非隔震、隔震结构的楼层剪力、楼层倾覆力矩、楼层层间位移角。分析结果表明:既有建筑采用隔震技术进行加固,满足结构抗风要求,楼层剪力、倾覆力矩显著减小,水平地震作用大大降低,使其满足现行规范与标准,达到抗震加固目的。详细介绍了施工过程中顶升与托换方法,该方法具有施工周期短、经济、环保的优点,实用性强,具有较高的推广与应用价值。An 8-story office building built in 1989 adopts reinforced concrete frame structure. According to seismic evaluation, seismic performance of the building fails to fulfill requirements of current codes and the building needs seismic reinforcement. Isolation technique was used in reinforcement in order to minimize the impact on the service function of superstructure, reduce the comprehensive cost and shorten the reinforcement construction period. A three-dimensional finite element model was built for the building to analyze wind resistance performance of the isolation layer and obtain story shear forces, overturning moments of layers, inter-story drifts of isolation and non-isolation structures through the non-linear time history analysis. The analysis results show that using isolation technique for seismic reinforcement of existing building can meet requirement of structural wind resistance with significant reductions in story shear force and overturning moment of layer, and horizontal seismic action is decreased sharply, which meet the current codes and standards to achieve the purpose of the seismic reinforcement. Furthermore, rising and underpinning method in construction process was introduced in detail. This method has the advantages of short construction period, economy, environment protection and strong practicability. This method has high popularization and application values.

关 键 词：既有建筑 隔震加固 非线性分析 施工技术 

分 类 号：TU352.1[建筑科学—结构工程]