地下综合管廊基坑二次开挖支护采用钢板桩+预应力锚索形式技术研究

摘要

为保证北京市市委相关部门2017年投入使用,提高行政办公区市政基础设计建设水平,提升北京城市副中心市政配套品质,同时响应国家加速推广城市地下综合管廊西建设要求,规划在行政办公区及周边市政基础设施建设中建设综合管廊.本文主要对地下综合管廊基坑二次开挖支护采用钢板桩+预应力锚索形式技术进行研究.%In order to ensure the relevant departments of Beijing Municipal Party Committee put into operation in 2017, improve the design and construction level of municipal infrastructure, improve the supporting quality of Beijing municipal sub-centers, in response to the state's requirement of accelerating the construction of the urban underground integrated pipe network in the west, it plans to build a integrated pipe gallery in the administrative office area and municipal infrastructure. This paper studies on the secondary excavation and support of underground integrated pipe gallery with the technique of steel sheet pile+prestressed anchor cable.