（威海景英高结构工程事务所， 威海 264209）

［摘要］通过分析场地抗浮设防水位与结构抗浮设防水位的差异，考查影响抗浮设防水位确定的各种因素，提出合理地确定地下结构的结构抗浮设防水位的方法和相应的技术控制措施。通过工程案例，说明合理地确定结构抗浮设防水位既能保证地下结构安全，又能产生巨大的经济效益。

［关键词］地下结构； 场地抗浮设防水位； 结构抗浮设防水位； 基坑支护； 地形地貌； 降排截水措施

中图分类号： TU318.2  文献标识码： A  文章编号： 1002-848X(2015)S2-0188-05

Rationally determining the structural water level for prevention of

up-floating of underground structures

Jing Yinggao， Wang Yanhong， Bai Bing， Sun Rui， Tian Shuyu

（Weihai Jingyinggao Structural Design INC., Weihai 264209, China）

Abstract： It is meant to investigate various factors which have influence on the determination of water level for prevention of up-floating by analyzing the differences between building site water level for prevention of up-floating and structural water level for prevention of up-floating, and therefore, to advance reasonable methods to determine structural water level for prevention of up-floating of the underground structure and corresponding technical control measures. Also, it is well explained, through the engineering cases, that a reasonable determination of the structural water level for prevention of up-floating can not only ensure the safety of the underground structure but also bring enormous economic benefit.

Keywords： underground structure; building site water level for prevention of up-floating; structural water level for prevention of up-floating; retaining and protection for excavations; reconstruction of terrain and landforms; groundwater control

作者简介：景英高,硕士,高级工程师,一级注册结构工程师,注册土木工程师（岩土）,Email：jg3000@126.com。