大直径盾构穿越浅基础房屋群施工动态研究

Study on Construction Dynamics of Large Diameter Shield Through Shallow Foundation Building Group

基于成都地铁17号线二期踏水桥站—二仙桥站区间大直径盾构施工背景,结合盾构连续穿越陶玻酒店用品商城、圣灯寺派出所及周边小区等密集浅基础房屋群的施工难题,通过对盾构掘进过程中的施工动态特征的综合分析,研究了小曲线半径段盾构隧道施工稳定性以及浅基础房屋群沉降规律,以确保隧道成型质量和建筑物安全。

Based on the construction background of large-diameter shield in the section between Taishui Bridge Station and Erxianqiao Station of Chengdu Metro Line 17 Phase II,combined with the construction problems of dense shallow foundation housing groups such as Taobo Hotel Supplies Mall,Shengdengsi Police Station and surrounding communities,the construction dynamic characteristics of shield tunneling are comprehensively analyzed.The construction stability of shield tunnel in the small curve radius section and the settlement law of shallow foundation building group are studied to ensure the tunnel forming quality and building safety.