摘要
北京地铁17号线勇士营站基坑围护结构采用地不连续墙+锚索支护体系。针对锚索施工中出现的涌水涌砂情况,经分析原因采取了切实可行的紧急封堵方案,并制订了在粉细砂层中施工锚索的技术措施,保证了勇士营站轨排井处的锚索安全穿越粉细砂层,车站基坑、周边建筑物和重要管线也未发生沉降和变形预警。
The retaining structure of foundation pit of the Yongshiying Station of Beijing Metro Line 17 adopts a discontinuous wall+anchor cable support system.In response to water and sand gushing in construction of anchor cable,a practical emergency plugging plan was adopted after analysis,and technical measures for construction of anchor cable in silty sand layer were formulated to ensure anchor cable of the track panel shaft of the Yongshiying station safely pass through the silt and fine sand layer,and the station foundation pit,surrounding buildings and important pipelines have not been warned of settlement and deformation.
作者
吴昊
李家帅
WU Hao;LI Jia-shuai(BCEG Civil Engineering Co.,Ltd.,100015,Beijing,China)
出处
《建筑技术》
2021年第8期983-985,共3页
Architecture Technology
关键词
基坑工程
预应力锚索
涌水涌砂
处理
foundation pit engineering
prestressed anchor cable
water and sand gushing
treatment
