摘要
在暗挖通道施工过程中,为保证侧上方百年历史古建筑物(属于危楼)变形可控,采用地表复合锚杆桩将暗挖通道和建筑物隔离、洞内深孔注浆对通道拱部粉细砂层进行超前加固的复合技术。通过对比监测统计数据,采取的复合加固措施达到了预期的目的。对比其他隔离、注浆加固措施,所选措施受场地制约小,更适用于城市地铁施工。
A horizontal gallery of a Metro station passes below a historic church.In order to control the displacement of the historic church during the construction of the horizontal gallery,composite anchor piles are installed from the ground surface to separate the historic church from the horizontal gallery and deep-hole grouting is executed from inside the tunnel to consolidate the fine silt sand strata at the tunnel crown.The monitoring results show that the composite consolidation measures taken are effective.The measures taken are superior to others in terms of site requirement and therefore are more suitable to be used in urban Metro construction.
出处
《隧道建设》
2012年第2期228-233,共6页
Tunnel Construction
关键词
地铁
暗挖旁穿
古建筑
复合锚杆隔离桩
深孔注浆加固
Metro
mining below ancient building
hostoric building
composite bolt separating pile
deep-hole grouting
reinforcement
