地铁车站深基坑支撑系统优化研究

利用数值模拟手段和现场土工参数，分析了支撑安装位置、支撑水平间距、支撑预加应力三个参数变化对车站基坑开挖过程的影响，并运用总结出的影响规律，对郑州市地铁车站基坑工程支撑体系原设计方案进行了分析和优化。通过与原设计方案的对比分析，得出优化后的设计方案在控制基坑变形和节省工程造价两个方面有较大改善。

Optimizing of Supporting Structures for a Subway Station Deep Excavation

For installation of prop structures,the effect of variables such as horizontal spacing,location as well as the pre-stresses within the propos,on the performance of deep excavations is investigated through numerical analyses with site specific subsurface conditions.Based on the analytical results,the design of supporting structures for the deep excavation construction of a subway station in Zhengzhou City can be optimized.The improved design had a better performance in deformation control during the excavati...