数值模拟法确定饱和土强夯施工参数  

Study on Confirmation of the Construction Parameter of Saturated Soil Reinforced by Dynamic Compaction

作　　者：郑红娟[1] 周世良[2] 

机构地区：[1]南通航运职业技术学院,江苏南通226010 [2]重庆交通大学,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2010年第6期938-941,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市教委科技项目(040406);重庆市水利水运工程重点实验室开发基金项目(SLK2006A04)

摘　　要：探讨了用数值模拟确定饱和地基土强夯的施工参数方法:根据孔隙水压力增量随夯击次数的变化情况确定强夯的最佳夯击次数;根据孔隙水压力消散情况确定强夯的间歇时间;根据土体沿深度方向的竖向变形确定土体有效加固深度;根据沿水平方向的竖向变形确定强夯的单点加固范围。研究结果为强夯设计和加固效果评价提供有力的依据。Construction parameter of saturated soil reinforced by dynamic compaction through numerical simulation was discussed;the optimal rammer times were determined according to the varying curve of the increase of pore water pressure along with the rammer times;interval time of dynamic compaction was confirmed based on dissipation of water pressure of the pore;effective consoliation depth soil was ascertained according to vertical deformation of the soil;consolidation range of dynamic compation was determined according to vertical deformation of the soil along with horizontal direction,which could provide basis for dynamic compaction design and reinforcement effect evaluation.

关 键 词：强夯 饱和土 数值模拟 施工参数 

分 类 号：TU472.3[建筑科学—结构工程]