小刚度劲性水泥土连续墙法基坑支护的设计

Design on foundation pit bracing with small H shaped steel and soil-cement retaining wall

根据组合梁受力机理,利用"小刚度劲性水泥土连续墙法"对实践工程进行基坑支护设计;利用非线性有限元模拟,研究其开挖后及拆撑后变形的分布趋势,模拟结果与理论计算数据能较好地吻合,表明本文研究方法是可行的。"小刚度劲性水泥土连续墙法"与传统基坑支护方法综合对比,在造价和工期上具有较大优越性。可为"小刚度劲性水泥土地下连续墙法"的推广应用提供技术参数与理论支持。

Based on the interaction mechanism of composite beam, a method of small H-steel and soil-cement rataining wall was used to design a project of the foundation pit bracing. The distribution of excavation and dis- mantled was researched with the nonlinear finite element simulations. The simulation show that results fit the theorety and the method is feasible in the engineering. Based on comparison of the traditional excavation meth- ods, ＂ small stiffness reinforced cement soil continuous wall method＂ has a large advantage on both the cost and the duration, which can provide the relative technical parameter and theoretical service to the foundation pit bracing.