高能级强夯法处理深厚湿陷性黄土地基失效的案例分析  

Case Analysis on Dynamically High Energy Level Compaction for Failure Treatment of Deep Collapsed Loess Foundation

作　　者：胡树林 熊健 孙茂岭 

机构地区：[1]中国石油集团工程设计有限责任公司华北分公司,河北任丘062552 [2]中国石油天然气股份有限公司华北油田分公司,河北任丘062552

出　　处：《勘察科学技术》2014年第3期39-45,共7页Site Investigation Science and Technology

摘　　要：高能级强夯法是能级大于6000kN·m以上的地基处理新技术,施工前需进行强夯试夯。结合某国家原油储备库施工前期在现场选取三个典型试验区进行8000kN·m以上高能级强夯下加固效果的对比试验。处理前后分别进行了标准贯入、动力触探及载荷试验等一系列原位及室内测试,结果表明:高能级强夯法在处理该场地深厚湿陷性黄土效果较差,地基条件不良和施工工艺参数缺陷是高能级强夯法处理该场地深厚湿陷性黄土地基失效的主要原因。试验结论可为设计及时调整地基处理方案提供依据,并为类似工程的地基处理提供借鉴。Dynamically high energy level compaction is a new method for foundation treatment, its energy level is more than 6000kN.m and compaction test is needed before project construction. This paper investigates the collapsed loess foundation with contrast experiments on foundation treatment by dynamically high energy level （8000kN.m above） compaction of a national petroleum reserve. Three typical test areas have been chosen. Before and after the experiment, a series of in-situ and laboratory tests are performed. They include standard penetration tests, dynamic touch tests and static load tests. The results show that： dynamically high energy level compaction is ineffective in handling such deep collapsed loess. And the bad foundation condition and construction parameters are the main reason for the failure, which supplies important basis for the timely adjustment of foundation treatment programs and it is also a reference for similar foundation treatment project.

关 键 词：湿陷性黄土 高能级强夯法 地基处理 对比试验 

分 类 号：TU472.31[建筑科学—结构工程]