（1 南京地下工程建筑设计院有限公司， 南京 210029； 2 南京益和人防工程施工图审查有限公司， 南京 210029）

［摘要］针对南京某小区单建式地下室上浮导致部分钢筋混凝土柱产生剪切压弯破坏现象，进行现场勘测及事故原因分析，指出设计及施工中存在如下问题：1）进行抗浮设计时未留足够的安全余量；2）施工单位对地下水对工程影响的严重性认识不足，未按设计要求施工；3）监理单位对地下水对工程影响的严重性认识不足，未起到监督施工单位按设计要求施工的作用。介绍了透水泄压、周边集水井降水等现场应急处理方案及后续的加固方法。经加固处理后该地下室已投入正常使用，至今状态良好，表明所采取的措施起到了预期的效果。

［关键词］单建式地下室; 抗浮设计; 破坏形态; 应急方案; 加固措施

中图分类号：TU375      文献标识码：A      文章编号：1002-848X(2014)08-0044-04

Reflections on anti-floating design of basements based on an engineering accident

Li Chunping1, Zhang Weirong1,2

（1 Nanjing Underground Construction Architectural Design Institute Co., Ltd., Nanjing 210029, China; 2 Nanjing Yihe Urban Air Defense Project Construction Drawing Examination Co., Ltd., Nanjing 210029, China）

Abstract: An up-floating accident in a separate basement happened in a community in Nanjing, which caused the shear buckling destruction in some concrete columns. Site survey was conducted and the cause of the accident was analyzed. Problems in design and construction were pointed out as follows: 1) safety allowance is inadequate during the anti-floating design; 2) the construction unit is failed to appreciate the seriousness of groundwater effects on engineering and failed to construct according to design requirements; 3) supervision units are failed to appreciate the seriousness of groundwater effects on engineering and failed to play the role of supervision on construction units according to the design requirements. On-site emergency plans and reinforcement methods were also introduced as permeable pressure relief and peripheral sump dewatering. According to the above methods, the basement has been put into normal use after reinforcement and is still in good condition, which shows that the measures adopted achieve expected effects.

Keywords: separate basement; anti-floating design; failure mode; emergency plan; reinforcement measure

作者简介：李春平，硕士，工程师，Email:331043662@qq.com。

参考文献

［1］DGJ32/J 12—2005 南京地区地基基础设计规范［S］.北京：中国建筑工业出版社，2005.

［2］GB 50007—2011 建筑地基基础设计规范［S］.北京： 中国建筑工业出版社，2012.