In foundation pit excavation engineering,the impact on adjacent buildings varies due to different excavation processes,so a reasonable construction process is particularly important for foundation pit excavation engineering.The study takes the example of a pedestrian passage in Nanning,where the foundation pit passes through a viaduct and adjacent building structures.A combination of numerical simulation and on-site measurement is used to study the environmental disturbance effects and structural deformation characteristics caused by different excavation conditions of the foundation pit.Through comparative analysis,a suitable excavation plan is obtained.The research results indicate that:(1)the disturbance effect of silo excavation on the environment is smaller than that of whole layer excavation;(2)Excavating both ends of the foundation pit first,and then excavating the middle part of the foundation pit that overlaps vertically with the bridge,will cause smaller surface deformation and disturbance to the bridge pile structure.The above research results can not only effectively guide the design and construction of engineering,but also provide reference and inspiration for similar projects in the future.
关键词
桥梁/异形基坑/近接施工/数值模拟
Key words
bridge/special-shaped foundation pit/adjacent construction/numerical simulation
维普
万方数据