门形抗滑桩结合高压旋喷止水帷幕支护在临江深基坑中的应用.pdf

施工技术 2013年11月上 70 CONSTRUCTION TECHNOLOGY 第42卷第21期 D01:10.7672/sgjs2013210070 门形抗滑桩结合高压旋喷止水帷幕支护 在临江深基坑中的应用* 袁尚锋，吴曙光2，詹重伟，郭福元，邱伟 (1.中建三局第一建设工程有限责任公司，重庆400010； 2.重庆大学土木工程学院，重庆400045) [摘要]结合重庆力帆中心临江深基坑工程，介绍了门形抗滑桩结合高压旋喷止水帷幕支护技术的应用.利用有 限元分析及结合现场实际监测，得出了门形抗滑桩支护在临江软土基坑中可以较好控制基坑侧向变形，门形抗滑 桩结合高压旋喷止水帷幕能很好屏蔽江水的渗透，确保了周边构筑物的安全及基坑内施工的安全.严格控制关键 工序，对确保施工质量至关重要. [关键词]基坑；支护；门形抗滑桩；止水帷幕；监测 [中图分类号]TU753.3 [文献标识码]A [文章编号]1002-8498(2013)21-0070-03 Application of Portal Structure Anti-slide Pile Combined with High-pressure Jet Grouting Waterproof Curtain Supports of in River-side Deep Foundation Excavation Yuan Shangfeng' Wu Shuguang? Zhan Chongwei' Guo Fuyuan' Qiu Wei' (1.The First Construction Engineering Limited of China Construction Third Engineering Bureau Chongging 400010 China; 2.The College of Civil Engineering of Chongging University Chongging 400045 China) Abstract:Based on the river-side deep foundation excavation of Chongqing Lifan Center this paper introduces the application of portal structure anti-slide pile bined with high-pressure jet grouting waterproof curtain supports.Using finite element analysis and field monitoring it is concluded that the portal structure anti-slide pile can control the lateral deformation of soft foundation excavation effectively and the portal structure anti-slide pile bined with high-pressure jet grouting waterproof curtain supports can stop the penetration of river water well and ensure the safety of the surrounding structures and the safety of cons...