砂土地层中混凝土倒挂井地基承载力和沉降研究  

A Study on Bearing Capacity and Settlement of Concrete Upside down Well Foundation in Sandy Soil Stratum

作　　者：张凡孟 徐玉梅 Zhang Fanmeng;Xu Yumei(Hefei Municipal Design and Research Institute Co.Ltd.,Hefei,Anhui 230001;HefeiUniversity,Hefei,Anhui 230000)

机构地区：[1]合肥市市政设计研究总院有限公司,安徽合肥230001 [2]合肥学院,安徽合肥230000

出　　处：《江西建材》2022年第11期234-236,共3页Jiangxi Building Materials

摘　　要：在饱和砂土中改造城区现状老旧排水管网,受地下管线和施工场地影响,施工难度大。针对上述问题,文中以蒙城县某管网改造项目为例,采用注浆和高压旋喷桩止水帷幕相结合的阻水措施,利用混凝土倒挂井作为基坑支护,在保护现状管道基础上,实现新旧管网的连接。结果表明,该施工技术防水性能好,施工方便,对道路交通和现状排水管道影响较小,可以为相关工程提供借鉴。Affected by underground pipelines and construction sites, it is difficult to transform the existing old drainage pipe network in the saturated sand. In view of the above problems, taking a pipe network renovation project in Mengcheng County as an example, this paper adopts the combination of grouting and high pressure jet grouting pile water stop curtain water blocking measures, uses the concrete upside down shaft as the foundation pit support, and realizes the connection of the old and new pipe network on the basis of protecting the current pipeline. The results show that the construction technology has good waterproof performance, convenient construction, little influence on the road traffic and the current drainage pipe, which can provide reference for related projects.

关 键 词：饱和砂土 高压旋喷桩 混凝土倒挂井 注浆加固 复合地基 

分 类 号：TU990.3[建筑科学—市政工程]