饱和盐渍土碎石排水桩加强夯试验研究  

Experimental study on ground improvement of saturated saline soil with dynamic consolidation and drainage stone columns

作　　者：彭芝平[1] 杨军[1] 陈耀光[1] 连镇营[1] 

机构地区：[1]中国建筑科学研究院地基基础研究所,北京100013

出　　处：《岩土工程学报》2010年第S2期136-141,共6页Chinese Journal of Geotechnical Engineering

摘　　要：在青海察尔汗盐湖地区的饱和盐渍土上进行碎石排水桩加强夯试验研究。对不同的碎石排水桩参数、不同的强夯能量进行对比试验。通过静载荷试验、孔隙水压力测试、变形测试、静力触探试验、重型圆锥动力触探试验、波速测试等大量的原位测试试验,明确了饱和盐渍土碎石排水桩加强夯处理的碎石桩优化设计参数、强夯单点夯击能量的选择、强夯处理效果、强夯的影响深度等。给出了强夯处理后地基承载力、压缩模量等土性指标的确定方法。The ground improvement of saturated saline soil with dynamic consolidation and drainage stone columns are studied at Chaerhan Salt Lake in Qinghai.Comparative tests between different parameters of drainage stone columns and energy of compaction are carried out.Through the in-situ tests such as plate loading tests,cone penetration tests,dynamic penetration tests,measurement of pore pressure,wave velocity and ground settlement,the optimized parameters of drainage stone columns,energy of compaction,influence depth and effect of dynamic consolidation are determined.The methods to determine the parameters of soil such as bearing capacity and modulus of compression are provided.

关 键 词：盐渍土 强夯 排水桩 

分 类 号：TU473.1[建筑科学—结构工程]