双排桩与旋喷止水帷幕在饱和粉砂层中的应用  

The Application of Double-row Piles Combined with Jet Grouting Waterproof Curtain Supports in Saturated Silty Sand Layer

作　　者：陈晨[1] 赵富章[1] 高帅[1] 高慎伟 

机构地区：[1]吉林大学建设工程学院,吉林长春130012 [2]辽宁地质工程勘察施工集团公司,辽宁沈阳110032

出　　处：《施工技术》2017年第1期21-24,共4页Construction Technology

摘　　要：以营口市某深基坑支护工程为例,根据此基坑北侧饱和粉砂地层及地下空间有限的情况,在北侧特殊支护段采用悬臂式双排桩和内支撑进行基坑支护,双排桩中间采用三轴搅拌止水桩帷幕,同时采用高压旋喷对坑内被动土进行加固,通过对现场监测数据的分析,验证了这种联合支护方式的支护效果,并对该支护结构的应用进行了讨论。Taking a deep foundation excavation supporting engineering in Yingkou as an example,the cantilever double-row piles and internal support for foundation excavation supporting are used in the north of the special supporting paragraph according to the saturated silt stratum foundation excavation and underground space is limited in this region,and the three stalk agitation stake is used as waterproof curtain in the middle of double-row piles. At the same time the high pressure jet grouting is adopted to reinforce passive earth inside the foundation excavation. The supporting effect of the combined supporting method is verified through the analysis of the actual monitoring data,and the application of the supporting structure is discussed.

关 键 词：深基坑 饱和粉砂地层 支护 悬臂式双排桩 内支撑 止水帷幕 

分 类 号：TU753[建筑科学—建筑技术科学]