SMW工法在复杂条件下基坑支护中的应用研究

考虑某地下室工程地质条件及周边环境特点,提出了SMW(Soil Mixing Wall)工法支护方案,采用空间有限单元法分析了在不同支护结构型式、不同桩长、不同刚度条件下,支护结构位移及周边建筑沉降性状.结果表明:SMW工法加支撑的支护方式能有效地控制周边建筑沉降,SMW工法桩桩长对支护结构变形及地面沉降影响很小,支护结构刚度对支护结构变形与地面沉降有一定影响.

On Application of SMW Method in Foundation Pit Supporting Structure under Complex Condition

The SMW method for the foundation pit of a basement is proposed after considering the engineering geology condition and surrounding environment.The three dimensional FEM is used to simulate the behaviors of supporting structure and the surrounding buildings under different support layout,different pile length and stiffness.It is found that the SMW method can control the settlement of the surrounding building effectively,compared with the pile length,the stiffness of supporting structure have impact on the displacement of supporting structure and the settlement of surrounding building.