【作者】 王宁伟； 朱丰； 韩旭；

【Author】 Wang Ningwei;Zhu Feng;Han Xu;School of Civil Engineering,Shenyang Jianzhu University;

【机构】 沈阳建筑大学土木工程学院；

【摘要】 空间效应对支护结构侧移和基坑周边地表沉降有显著的影响,以沈阳某基坑工程为依托,通过Midas GTX数值计算,研究在空间效应的影响下,支护结构的侧移和周边地表沉降的变形特点。计算结果表明:由于空间效应的作用,支护挡墙中部的侧移大于支护挡墙角点处的侧移,并且中部侧移平均为角点处侧移的2.37倍;坑外土体在平行于基坑方向和垂直基坑方向都发生不均匀的凹槽形沉降变形,使得坑角处土体呈现三维曲面的沉降形态;空间效应对基坑周边地表沉降的影响范围约为3倍的基坑开挖深度;更多还原

【Abstract】 Lateral space effect of supporting structure and the ground settlement around the have a significant impact,which is based on a certain foundation pit project of shenyang,by the numerical simulation of Midas GTX,research under the influence of space effect,lateral of retaining structure and surrounding ground surface subsidence deformation characteristics.Calculation results show that:because of the space effect,the effect of support retaining wall in the middle of lateral is larger than the retaining wall of the lateral angular point,central,and lateral average angular point of 2.37 times;The pit in the direction parallel to the foundation pit of soil and vertical direction is uneven in hollow settlement of foundation pit deformation,makes the Angle of the pit soil rendering 3 d surface subsidence form;The influence of space effect of the ground settlement around the range is about 3 times of the excavation depth.更多还原