Numerical investigation of the effect of cross walls in reducing ground settlement induced by deep excavation

摘要

This study presents the results from three-dimensional numerical analysis of two deep excavationsrnwith different installations of cross walls to demonstrate the effectiveness of cross walls in reducing lateralrnwall deflection and surface settlement. For simplifying analysis, an equivalent beam model suitable for tworndimensional plane strain analysis is developed. Moreover, a simplified formula from the regression analysis ofrnthe three dimensional parametric study results is advanced.The above-mentioned two excavationswere employedrnto demonstrate the proposed beam model and the simplified formula.