地下室上浮的结构变形损伤特征判断  

Judgement of Structural Deformation and Damage Characteristics of Basement Uplift

作　　者：何胜华 HE Shenghua(Guangdong Provincial Academy of Building Research Group Co.,Ltd.Guangzhou 510500,China)

机构地区：[1]广东省建筑科学研究院集团股份有限公司,广州510500

出　　处：《广东土木与建筑》2024年第11期50-54,共5页Guangdong Architecture Civil Engineering

摘　　要：根据上浮破坏原因和范围的不同,地下室结构的变形及损伤具有相应的典型特征。地下室柱构件以受弯和受剪开裂为主,梁、板构件以受拉开裂、受弯开裂为主,也可能发生受剪破坏,底板构件可能发生因承载力不足引起的冲切破坏和受弯开裂、因施工质量原因引起的薄弱面开裂、因区域上浮后水浮力引起的支座受剪破坏。对上浮地下室进行判断与处理时,综合采用归纳法和演绎法可以准确地判断构件变形损伤特征。Based on the different causes and extents of floating damage,the deformation and damage of the structure of the basement exhibit corresponding typical characteristics.To make such judgments,a series of tasks should be completed.The main failure modes of column components are bending and shearing cracks.Beam and slab components are mainly subjected to tensile cracking and bending cracking,and may also undergo shear failure.Basement Slab may experience punching shear failure and bending cracks stemming from inadequate loadbearing capacity,cracking along weak planes due to construction quality issues,and shear failure at supports caused by buoyancy forces arising from regional uplift.The comprehensive use of induction and deduction methods can accurately determine the deformation and damage characteristics of components in floating basements.

关 键 词：地下室上浮 变形损伤特征 残余变形 水压力 

分 类 号：TU758.14[建筑科学—建筑技术科学]