真空联合堆载预压法中膜下真空度下降解决方案对比  

Comparison of Solutions of Decrease of Under-membrance Vacuum Degree in Vacuum Combined Surcharge Preloading

作　　者：陈国华 CHEN Guohua(Zhuhai Dahengqin City New Center Development Co.,Ltd.Zhuhai 519031,China)

机构地区：[1]珠海大横琴城市新中心发展有限公司,珠海519031

出　　处：《广东土木与建筑》2021年第6期30-32,共3页Guangdong Architecture Civil Engineering

摘　　要：真空联合堆载预压法在道路软基处理中得到广泛应用,结合珠海市某道路工程,介绍了此方法施工工艺流程及膜下真空度下降情况,通过分析原因,提出了三种解决方案,通过对比确定了堆载顶面整体密封方案,采用该方案后的结果表明软土层工程性质得到很好的改善,各项指标均满足设计要求。Vacuum combined surcharge preloading method has been widely used in soft foundation treatment.Taking a road project in Zhuhai City as an example,this paper introduces the construction process of this method and the vacuum degree decrease under the membrane,puts forward three kinds of solutions by analyzing the reasons,and determines the scheme of Sealing the top surface of the heap through comparative study.The results show that the engineering properties of soft soil layer are well improved and all the indicators meet the design requirements.

关 键 词：真空-堆载联合预压 软基 预压 膜下真空度 监测 

分 类 号：TU473.1[建筑科学—结构工程]