某地下车库局部抗浮失稳原因分析与加固处理

ANALYSIS OF LOCAL ANTIUPLIFT INSTABILITY OF AN UNDERGROUND GARAGE AND ITS STRENGTHENING

某地下车库发生抗浮失稳 ,其钢筋混凝土柱破坏相当严重 ,从柱裂缝位置和形态来看 ,其裂缝特征和破坏形态与地震作用下框架结构中 ,框架梁产生的裂缝特征和破坏形态十分相似 ,通过进行概念、计算分析 ,认为除保证地下车库整体抗浮满足设计要求 。

The reinforced concrete columns of an underground garage structure are seriously destroyed by instability of antiuplift. According to the analysis of the characteristics of crack and failure form, the failure form of a column is similar to that of a frame beam of the frame structure under seismic action. In the paper it is pointed out that local antiuplift check should be specially emphasized in addition to ensuring that the overall antiuplift of the underground garage meet the requirements of the design.