张鑫旺 李兵 刘蒙 刘珊

【摘    要】：为保障地铁施工的顺利进行及市政管线的正常运行，针对多条管线切改的统筹问题，从合并管线切改次数、利用现状管线、优化管线施工工艺、临时切改与永久切改相结合、管线切改与导行路施工相结合等方面出发，通过BIM建模、实地探测等方法对纵横交错的地下管线进行逐条梳理、统筹分析策划，优化管线切改次数、减少占路，从而既能保证地铁施工前期管线切改，又能满足管线运营需求；同时降低管线切改费用、缩短工期。

【关键词】：地铁；管线切改；BIM建模

【中图分类号】：TU990.3【文献标志码】：C【文章编号】：1008-3197（2023）02-49-03

【DOI编码】：10.3969/j.issn.1008-3197.2023.02.012

Optimization and Practice of Pipeline Cutting and Modification under Complex Environment in Central Urban Area

ZHANG Xinwang， LI Bing， LIU Meng， LIU Shan

（China Construction Eighth Engineering Division Corp. Ltd.， Shanghai 200135，China）

【Abstract】：In order to ensure the smooth construction of subway and the normal operation of municipal pipelines， this paper aims at the overall planning of cutting and modifying multiple pipelines， starts from the following aspects： consolidating the number of pipeline cutting and modification， making use of the existing pipeline， optimizing the pipeline construction process， combining temporary and permanent cutting and modification， and combining the pipeline cutting and modification with the guide road construction， through BIM modeling， field exploration and other methods， the paper combs the criss-crossing underground pipelines one by one， and makes overall analysis and planning， and optimizes the number of pipeline cutting and changing to reduce the road occupation， so as to achieve not only ensuring the pipeline cutting and changing in the early stage of subway construction， but also meeting the pipeline operation requirements， while reducing the cost of pipeline cutting and changing， and shortening the period.

【Key words】：metro construction; pipeline cutting and modification; BIM modeling

地鐵大多建设在城市繁华地带，地下管线错综复杂，无论采用明挖施工还是盖挖施工，都需要提前将施工范围内的各类管线切改至施工区域以外，以保证市政管网的正常运营。城市管网种类多、数量多、涉及产权单位多、施工影响大，导致管线切改进度缓慢，直接影响地铁施工建设。针对地铁建设前期管线切改问题，研究多集中在加强管线切改安全管理[1]、某个具体案例施工难点的解决措施[2]、管线切改总体原则[3～4]、管线切改综合规划[5]等方面；少有从多条管线切改统筹策划、合理利用现状管线、多期管线切改合并、降低切改成本、多工序穿插等角度出发，对管线切改综合优化分析，本文针对以上问题，介绍如何通过统筹策划，快速完成管线切改并节省施工成本。

1 工程概况

天津地铁7号线和8号线六里台站通过换乘通道换乘，见图1。……