富水软土层中基坑的变形控制措施分析与应用

介绍了富水软土层处理中止水、挡土和降水三种措施，以某深基坑为例，挡土结构采用钻孔桩加二层钢筋混凝土支撑的复合支护形式，止水措施采用双轴深搅桩止水加高压旋喷桩，降水措施采用管井并结合排水沟与集水坑明排处理地下水，实际支护效果良好，可见支护方案在变形控制方面是有效的，整个支护体系是成功的。

ANALYSIS AND APPLICATION OF CONTROL MEASURES AGAINST DEFORMATION OF FOUNDATION PIT IN WATER-RICH SOFT SOIL STRATUM APPLICATION

Three treatment measures for water-rich soft soil stratum are introduced, including water stopping, earth retaining and dewatering, etc. In a deep foundation pit project, the earth retaining structure adopts composite support of bored pile plus double-layer reinforced concrete; double-shaft deep mixed pile plus high-pressure rotary jet grouting pile are used as water stopping measure; dewatering measure adopts tube well, drain and collection sump to treat groundwater. These measures have favorable practical support effect, realizing effective deformation control and producing successful support and protection system.