（1 甘肃省建筑科学研究院有限公司， 兰州 730050；2 兰州交通大学土木工程学院， 兰州 730070）

［摘要］建筑地下结构防水问题是影响整个建筑物结构安全及耐久性的重要因素，因此对地下混凝土结构防水质量问题进行了归纳。以实际工程为依托，对该建筑地下结构施工过程中出现的渗漏事故进行了现场调查，分析事故原因是该工程设计不满足规范要求，外加地下室施工期间降水不到位，上覆土层回填不及时，局部抗浮不满足底板强度从而导致开裂，造成地下水从施工缝、后浇带、结构裂缝处渗出。后期采用注浆法对渗透部位进行了处理，渗漏问题得到了明显改善，但尚需对地下室结构进行进一步加固补强。

［关键词］地下结构； 渗透； 地下水； 降水； 抗浮； 加固

中图分类号：TU91文献标识码：A文章编号：1002-848X(2021)02-0103-05

Analysis of leakage causes and control measures of building underground structures

WANG Gongsheng1, SUN Wen1,2, ZHANG Zhijiang1

(1 Gansu Architectural Science Research Institute Co., Ltd., Lanzhou 730050, China;2 School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)

Abstract:The waterproof problem of building underground structure is an important factor that affects the safety and durability of the whole building structure. Therefore, the waterproof quality  problem of underground concrete structure was summarized. Based on the actual project, an on-site investigation of the leakage accident that occurred during the construction of the building underground structure  was conducted. The cause of the accident is that the design of the project does not meet the requirements of the specification, and the precipitation during the construction of the basement is not in place, and the overlying soil is not backfilled in time. The local anti-floating does not meet the strength of the bottom plate, which leads to cracking, causing groundwater to seep from the construction joints, post-pouring belts, and structural cracks. In the later stage, grouting was used to treat the infiltration area, and the leakage problem was significantly improved, but the basement structure still needs to be further reinforced.

Keywords:underground structure; infiltration; groundwater; precipitation; anti-floating; reinforce

*住建部科技示范项目（S2019059），住建部研究开发项目（K2019481）。

作者简介：王公胜，学士，教授级高级工程师，Email: xizhanyangguang@163.com;通信作者：孙文，博士，工程师，Email: 154310011@qq.com。