深基坑桩锚与土钉联合支护设计与数值模拟

Optimal Design and Numerical Simulation of the Pile-anchor and Soil Nailing Combined Structure in Deep Foundation Pit Supporting

对郑州市某大型深基坑进行桩锚与土钉联合支护设计,应用FLAC3D软件对桩锚与土钉联合支护过程进行数值模拟,对各开挖过程中基坑位移场和土钉锚杆等结构单元的受力变化进行分析,模拟结果与设计计算结果基本吻合,数值模拟结果有效地指导了设计计算和现场施工过程.

In order to understand goodly the reinforcement mechanism of the pile-anchor and soil nailing combined structure,optimal design and numerical simulation for a large deep excavation pit with pile-anchor and soil nailing in Zhengzhou city were done,the process of pile-anchor and siol nailing combined supporting was numerically simulated by the software FLAC3D,the displacement field of the pit and the change of the stress of siol-nail-anchor structure cell were analyzed.The simulation results were basically consistent with the design calculations results.The results of numerical simulation had effectively guidance to design and calculate,and in-site construction process.