回填土地基处理方案的枚举优化决策

Enumerative Optimal Decision of Treatment Schemes of Backfill Foundation

不良地基土的处理目的是为了提高地基土承载能力．以龙湖新城别墅回填土地基处理方案的优选为例，介绍了实际工程中不良地基处理方案的枚举法优选决策方法，通过对灰土挤密桩法、ＣＦＧ 桩法、强夯法、深层搅拌桩法４ 种方案进行比较优化，选择采用深层搅拌桩法．处理后的地基土不但承载力等各项达到设计要求，并且降低了投资。

The treatment of the bad soil of the foundation is an essential method of enhancing its bearing capacity and improving its compression deformation performance.Taking the optimal choice of the treatment schemes of backfill foundation of the villa area in Longhu New City as an example,this paper introduces the enumeration method of optimal decision for treatment schemes of bad foundations in engineering practice.Comparing four projects of dense pressing of lime and soil,CFG piling method, dynamic compaction,deep layer stiring,this paper chooses deep layer stiring,which not only improves bearing capability water content,plasticity index,compression modulus,but also reduces the investment cost of the construction structure,and it may have certain reference value for similar projects.