郑州地区砂质地质倒“凸”型深基坑开挖技术研究

Study on the Excavation Technology of Two-Stage Compound Deep Foundation in Sandy Area of Zhengzhou

随着城市地下工程的不断发展,地铁施工与其他市政隧道、管廊等交叉或合建的情况会越来越多。郑州市地铁5号线经开第八大街站,地下车站与市政隧道合建,基坑采用地下连续墙以及围护桩复合围护结构,基坑开挖安全、进度等控制难度较大,论文对施工过程中的相关问题进行总结,为类似工程施工提供借鉴。

With the continuous development of city underground engineering, the cross and co-construction of subway and other municipal tunnel, pipe gallery will be more and more. The No.5 line of Zhengzhou metro is crossing the No. 8 Stress Station, the underground station is co-construction with the municipal tunnel, the exterior protected construction of foundation is the combination of underground diaphragm wall and defence pile, the difficulty of excavation and progress control is great, this paper summarizes the problems related in construction, to provide reference for similar engineering construction.