摘要
地铁深基坑工程由于开挖深度大,受周围建筑物影响,施工难度较大。在此,结合西安地铁3号线保税区车站基坑开挖特点,对其施工方案进行分析。基坑支护采用上部放坡、喷锚支护,下部采用钻孔灌注桩加桩间挂网喷射混凝土,并采用大口井降水的方案。根据基坑水平及沉降位移变形监测结果,发现这一方案实施效果良好。
Metro deep foundation project is characterized by great depth and complex surrounding buildings,which caused great difficulty.This paper analyzes the construction method based on the deep excavation characteristic of Xi＇an metro line 3 in Baoshuiqu station.On the top of the foundation pit was supported by step-slope and shotcrete-bolt.The bottom of the foundation pit was supported by bored pile and shotcrete between pile.The dewatering of foundation pit was established by open well.The result of horizontal and settlement displacement monitoring indicated that this scheme was satisfactory.
出处
《廊坊师范学院学报（自然科学版）》
2017年第1期96-99,共4页
Journal of Langfang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(51408054)
陕西省教育厅专项科技计划项目(15JK1337)
关键词
地铁深基坑
支护
降水
变形监测
metro deep foundation pit
support
dewatering
displacement monitoring
