上海世纪大道某立交工程地下箱涵施工和对地铁线保护的研究

本文根据上海市世纪大道杨高路立交工程在地铁上部施工、监理,结合上海软土地基深基坑开挖的实际情况,选择适当的深基坑围护方案,依据时空计算结果,确定分段开挖范围、卸载量及顺序.进行了软土地基深基坑开挖与地下建筑物施工对下部地铁隧道保护的研究,提出了保护方法,使地铁隧道变形回弹得到有效控制.

Report on the Underground Box-tunnel Construction of the Shanghai Century Avenue Road Grade Separation Project and the Protection of the under Subway

This thesis was based on the construction and supervision of Century Avenue Yanggao Road grade sepration project.According to the fact that it is difficult to deeply excavating through the soft foundation in Shanghai.The right plan has been chosen to protect the deep foundation pit.Based on the accurate constructi on design the scale of the segment digging,the quantity of unloading and the pro cess sequence are defined.In the process of the whole work we have studied how t o protect the subway under the foundation pit and also pointed out some precauti ons to control the distorted resilience of the tube effectively.