某地下车库上浮事故分析与加固处理  

ANALYSIS AND REINFORCING TREATMENT OF A FLOATING UNDERGROUND GARAGE

作　　者：王海东[1,2] 周亮[1] 曾裕林[1] 张时如[1] 

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]湖南大学建筑安全与节能教育部重点实验室,长沙410082

出　　处：《工业建筑》2012年第3期154-158,共5页Industrial Construction

基　　金：湖南省自然科学基金项目(07JJ5098);湖南省建设科技计划(07-22)

摘　　要：针对新建的与2个相邻小高层住宅建筑相连的地下车库出现上浮、主要结构构件产生裂缝、混凝土压碎等破损现象的事故,通过现场实测和分析,发现事故产生的主要原因:勘测未给出正确的地下水位,从而导致未进行抗浮设计;其次,工程进度未如期完成,应该增加的"配重"未如期到位,从而加剧了结构破坏。针对分析结果,采用了"降水"和"配重"相结合的抗浮措施处理事故,同时对已产生破损的构件采用加大截面、粘钢等方法进行加固,效果良好。该事故分析处理经验可供类似工程借鉴。In this paper, a floating underground garage, which connects with two multi rise residential buildings, was researched because concrete cracks or crushes occurred on the main members. Through monitoring and investigation on site, the reasons which caused the accidents and the failure mechanism were found that firstly, anti floating design was not carried out due to the wrong peak value of underground water level, which was less than bottom elevation of basement floor; secondly, because the progress of project wasn＇ t completed on schedule, the benefit ＂additional mass＂ was not placed at the correct locations on time so as to make the damage of the members more seriously. Based on the results of monitoring and analysis, the combination of ＂lowering the water level＂ and ＂adding additional mass＂ was applied to deal with the incident, simultaneously, the damaged members were strengthened with RC and externally bonded steel plate. After the reinforced treatment was carried out, the performance of underground garage was good. The experience can be useful for similar projects.

关 键 词：地下车库 上浮 事故分析 加固 

分 类 号：TU94[建筑科学—建筑技术科学]