真空动力固结法在吹填砂土地基处理中的应用  

Application of Vacuum Dynamic Consolidation in Foundation Treatment by Dredger Fill Sand

作　　者：张纯清[1] 

机构地区：[1]中国铁建股份有限公司,北京100855

出　　处：《路基工程》2015年第2期156-160,共5页Subgrade Engineering

摘　　要：真空动力固结是采取真空降低地下水、重锤点击强夯夯实地基,增强地基承载力的施工技术,是一种比较成熟、简单、普遍使用的软地基加固工艺。通过对其工艺原理、工艺流程的简要介绍,并应用于吹填砂这种特殊地基的软基处理施工。曹妃甸电厂铁路专用线工程,其吹填砂地基承载力不满足设计要求,必须进行加固。在实施过程中,通过试验确定施工技术参数,并摸索出一种适合吹填混合土层的施工方法,其加固地基承载力满足了设计要求。Vacuum dynamic consolidation is a construction technology for improving the foundation＇s bearing capacity through vacuum dewatering preloading and heavily tampered foundation and also a mature,simple and extensively-used process for soft soil foundation reinforcement. In the project of dedicated railway line for Caofeidian Power Plant,the hydraulic fill sand foundation had the bearing capacity not satisfying the design requirement,and had to be reinforced. Through description of the process principle and procedure thereof,the soft foundation was treated by dredger fill sand,during which the construction technical parameters were specified by tests and then a construction method applicable to such dredger fill mixing soil was explored. As a result,the bearing capacity of the reinforced foundation can meet the design requirement.

关 键 词：吹填砂地基处理 真空动力固结 工艺原理 施工工艺 工程实例 

分 类 号：TU753.8[建筑科学—建筑技术科学]