沈阳地铁崇山站主体施工方案比选

Chongshan Subway station construction in Shenyang Metro

论文以崇山车站实际工程为依托,通过对施工安全、施工质量、施工进度、工程数量的变化及经济效益等不同方面的比较,分析了崇山车站总体施工方案的确定,对中洞初支护扣拱施工方案做了重点分析。研究采用PBA工法,选择合理的施工分部、科学的开挖步序,减少了施工干扰,控制了地面沉降,保证了施工安全,加快了施工进度。

This paper is based on the practical engineering of the shallow buried metro station in Shenyang. 2D plastic finite-element model of PBA standard cross section is respectively established. Study is also done to compare different construction scheme of PBA method, and compare the construction effection of PBA method in different surrounding rock grades. Furthermore, owing to the reasonable Partition and the scientific excavation Procedures, we succeeded in reducing the constructing disturbance, controlling the ground settlement, ensuring the constructing safety and accelerating the construction speed.