Analysis of Behavior of Soil Cement Column Wall Associated with Base Improvement by Cross Wall with 3D Finite Element Method
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Abstract
This paper presents the research work on behavior of Soil Cement Column Wall (SCCW) without temporary bracing in Bangkok’s soft clay layer associated with base stability improvement to reduce soil movement by cross wall and buttress. In this research measures the movement of SCCW and soil surface settlement during tunnel construction and compares the results to those obtained from finite element method. Furthermore, used interface element to model the imperfect interface between the SCC. The results indicated that SCCW with cross wall and buttress had significantly increased stability and reduced movement compared to empirical method. The finite element method results show that the Young’s modulus of soft clay is 500 Su, which is consistent with the shear modulus obtained from measurement results. This research can be used for designing of SCCW associated with base improvement by cross wall and buttress.
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