论文部分内容阅读
整理分析了济南西部新城某地下车库基坑的复合土钉墙支护结构现场监测数据,采用有限元软件ABAQUS建立基坑支护结构单元三维模型,模拟了其开挖支护施工过程,动态分析基坑边坡坡顶地表水平位移、沉降变化规律,并与现场监测值进行对比,分析了微型桩与止水帷幕对复合土钉墙的影响。表明由土钉、止水帷幕、微型桩、预应力锚杆与土体相互作用的有限元力学模型能较好模拟复合土钉墙支护施工过程,结果可供同类复合土钉墙设计施工提供参考。
The site monitoring data of the compound soil nailing wall supporting structure of an underground parking garage in the new city of Jinan in western China were analyzed and analyzed. The three-dimensional model of the supporting structure of the foundation pit was established by finite element software ABAQUS. The excavation and support construction process was simulated and the dynamic analysis The horizontal displacement and settlement of ground surface at slope top of pit are compared with the monitoring data, and the influence of micropile and curtain on composite soil nailing wall is analyzed. It is shown that the finite element mechanical model of the interaction between soil nailing, water curtain, micro-pile and prestressed anchor can simulate the construction process of composite soil nailing wall, and the result can be provided for the design and construction of similar composite soil nailing wall reference.