真空预压联合强夯加固深厚吹填土地基  

Application of Vacuum Preloading and Dynamic Compaction to Strengthen Deep Dredger Fill Foundation

作　　者：何铁伟[1] 

机构地区：[1]中国石化集团管道储运公司,江苏徐州221008

出　　处：《勘察科学技术》2015年第4期34-38,共5页Site Investigation Science and Technology

摘　　要：沿海地区广泛分布着深厚的软土地基,其孔隙比大、含水量高、压缩性大、且强度及承载力低,在这种地基上修筑建筑物,需对其进行加固处理。塑料排水板预压联合强夯处理地基是针对吹填软土的物理特性而形成的一种新技术;它很好地结合了两种加固方法的优势,使吹填土地基得到有效地加固。以天津南疆油罐地基处理工程为实例,应用预压-强夯法进行处理,通过现场监测,得到处理过程中土体物理力学性能的变化规律以及地基的加固效果,可以为今后类似的软基处理工程提供依据和借鉴。The deep soft soil foundation is distributed in coastal area widely. The soft soil foundation has the characteristics of big void ratio,high water content,big compression and low strength and bearing capacity. So when buildings are built in this foundation,the foundation need be strengthened. The plastic drainage plate preloading method jointing the dynamic compaction method is a new technology,which is formed to ami at the physical features of the dredger fill soft soil. This tcchnology combines the advantages of the two methods well,and it strengthen the dredger fill foundation effectively. Taking the foundation treatment engineering of Tianjing Nanjiang oil tank foundation for example,using the preloading-dynamic compaction method to treat,through the field monitoring,the change law of physical and mechanical properties of soil in the treatment process and the strengthening effect of foundation are obtained. And these can provide basis and reference for similar soft foundation treatment engineerings in future.

关 键 词：塑料排水板预压法 强夯法 软土地基 处理效果 

分 类 号：TU472.31[建筑科学—结构工程]