摘要
通过对前人的理论实验研究,分析了石灰桩的化学机理以及力学性能;其次,对石灰桩加固处理湿陷性黄土的效果进行理论分析,从理论上对石灰桩加固湿陷性黄土作了有益的探索,确定了膨胀有效半径,石灰桩膨胀压力增量,石灰桩的膨胀量,推导了石灰桩膨胀过程中桩及桩间土密实度的关系,通过推导石灰桩挤密之后的复合地基密实度以及孔隙比的表达式,从而可以对复合地基的承载力进行估算;最后通过工程实验,测量了石灰桩膨胀法加固湿陷性黄土时黄土的各项力学参数的变化以及进行了评价.结果表明灰土挤密处理湿陷性黄土地基是一种有效经济的方法.
Based on the previous theories and experiments, the paper firstly analyzed the chemical mechanism and mechanical properties of lime piles. Then, the authors conducted a theoretical analysis of the effect of collapsible loess reinforced by the lime pile, determined the effective radius of expansion, the increase in expansion pressure and expansion volume of lime piles, and deduced the soil density of the lime piles and the soil density between lime piles in the process of expansion. Next, in the light of the expression of the density and porosity of composite foundation of the compacted lime piles, the load of the composite foundation was estimated. Finally, through project experiments, the changes of mechanical parameters of collapsible loess were measured and evaluated when expansion of lime piles is used to reinforce collapsible loess. The results show that lime compaction is cost-effective in reinforcing the foundation of collapsible loess.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2010年第2期288-293,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
关键词
挤密桩
挤密效果
湿陷性
黄土
compaction pile
compaction effectiveness
collapsibility
loess
作者简介
作者简介：王雪浪（1973-），男，博士研究生，讲师，主要从事建筑结构的教学与设计研究．
