大跨暗挖车站拱盖法施工方案优化研究  

Study on Scheme Optimization of Construction of Long-span Concealed Excavation Station by Arch Cover Methold

作　　者：陈刚 CHEN Gang(Guiyang Urban Rail Transit Group Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵阳市城市轨道交通集团有限公司,贵阳550081

出　　处：《路基工程》2022年第5期177-181,共5页Subgrade Engineering

摘　　要：依托贵阳市一临近既有建筑物的大跨暗挖车站工程,通过数值方法对其拱盖法施工过程进行模拟,分析施工过程中加固深度和位置对既有建筑物变形的影响,并提出优化方案。研究表明:既有建筑物变形集中在拆撑并施做内衬的过程中,施工中需重点监测;随着加固桩深度的增大,既有建筑物竖向和水平向变形均降低;随着加固位置逐渐接近既有建筑物,其变形也逐渐降低,但加固深度和加固位置均存在最优值。In relation to the project of Guiyang —the long-span concealed excavation station near existing buildings, the construction process of arch cover method is simulated by numerical method. the influence of reinforcement depth and position on the deformation of existing buildings in the construction process is analyzed,and the optimization scheme is put forward. The research shows that the deformation of existing buildings is concentrated in the process of removing braces and trying to make lining, which needs to be monitored in the construction. With the increase of the depth of the reinforced pile, the vertical and horizontal deformation of the existing buildings are reduced. With the reinforcement location close to the existing building, its deformation also decreases gradually. There are optimal values for the reinforcement depth and reinforcement location.

关 键 词：拱盖法 既有建筑物 加固深度 加固位置 数值模拟 

分 类 号：TU443[建筑科学—岩土工程]