某大面积填方场地地基处理及基础方案比选研究

Research and comparison of ground treatment and foundation plans for a large area fill site

针对某大面积填方场地进行了结合地基处理和基础方案的综合比选,分析论证了强夯夯实法、换填垫层法、基础下落及一层转换法及高压旋喷桩复合地基处理法等各自方案的适用性及优缺点,通过分析,论证了该项目采用强夯夯实法进行地基处理,再采用墙下条形基础方案,具有比较明显的优势。介绍了强夯夯实法的具体应用设计,包括强夯设计的各种参数、要求、检测等。通过实际案例,说明对于大面积填方场地,强夯夯实法可以有效达到预定要求,并表现出良好的经济效益,是实现建筑绿色低碳发展的有力支撑方案。

A comprehensive comparison was made between the ground treatment and foundation plan for a large area of filling site.The applicability and advantages and disadvantages of various schemes,such as heavy tamping,replacement layer of compacted fill,foundation falling and one layer conversion method,and high-pressure rotary jet pile composite foundation treatment method,were analyzed and demonstrated.Through analysis,it was demonstrated that the project adopts heavy tamping for ground treatment and then adopts the strip foundation scheme under the wall,which has obvious advantages.This article introduces the specific application design of heavy tamping,including various parameters,requirements,testing,etc.of heavy tamping.Through practical cases,it is demonstrated that for large-scale fill sites,the heavy tamping can effectively meet the predetermined requirements and demonstrate good economic benefits,making it a powerful support solution for achieving green and low-carbon development in construction.