摘要
以实际工程为背景,通过ABAQUS软件分别建立了悬臂式和单层支撑式单排桩支护结构的三维有限元数值模拟计算模型,对单排桩式深基坑安全开挖深度进行了数值模拟计算,并与实际工程监测数据进行了对比分析,结果表明：直径为800mm的悬臂式桩的安全极限开挖深度为5-6m,单层支撑式桩的安全极限开挖深度为12.0-12.5m,充分发挥了其支护结构的空间效应,同时基底土层分布的变化对其支护能力也有一定的影响.所得结论可为单排桩支护设计和施工提供参考依据.
Based on the actual engineering situation,the three-dimensional finite element numerical simulation calculation model of the cantilever and single support type single row pile retaining structure are established with the ABAQUS soft-ware, meanwhile,the safety excavation depth of single row piles is simulated,and the results are compared with the actual monitoring data. The result shows that the safety limit diameter of cantilever pile 800 mm excavation depth is 5～6 m,and the excavation depth of the safety limit of single pile supported piles is 12.0～12.5 m,the space effect of the supporting structure is fully played,besides, the change of the distribution of basal soil layer has a certain influence on the supportingcapacity. The conclusions provide a reference for design and construction of single row piles.
出处
《天津城建大学学报》
2016年第6期423-426,470,共5页
Journal of Tianjin Chengjian University
