摘要
宁波市轨道交通2号线柳汀街站附属结构紧邻历史建筑老城隍庙施工,最小间距仅4.3m,基坑内存在着大量的障碍物。施工时遵循"化整为零"的原则,将原定的地连墙围护改为咬合桩围护,将大基坑分成4个小基坑分阶段施工,并针对性地优化了支撑体系以及坑底加固方案。施工过程中,老城隍庙的变形得到了有效控制,确保了工程顺利进行。
The subsidiary structure of Liuting Street Station of Ningbo Rail Transit Line 2 is adjacent to the historic building(the Town God's Temple) with a minimum spacing of only 4.3m.Furthermore,there are plenty of obstacles in the excavation pit.Following the principle of 'breaking up the whole into parts' in construction,the diaphragm wall structure in original design was modified into retaining wall of secant piles;and the original large excavation pit was changed into 4 small pits which were excavated in phases and the support system and bottom consolidation scheme were optimized as well.During construction,the deformation of the Town God's Temple was well controlled,ensuring the smooth construction.
出处
《地下工程与隧道》
2015年第3期20-22,51,共3页
Underground Engineering and Tunnels