2016年4月上 施工技术 第45卷第7期 CONSTRUCTION TECHNOLOGY 89 D0I:10.7672/8js2016070089 孔内深层强夯地基处理效果评价 米素婷1,周立新2,周虎鑫2,黄晓波3 (1.中国地震局地震预测重点实验室(中国地震局地震预测研究所),北京100036; 2.空军工程设计研究局,北京100068;3.北京泰斯特工程检测有限公司,北京102600) [摘要]孔内深层强夯法作为地基处理的一种方式,对其进行地基处理效果评价有着重要的意义.按照预定参数 施工后,通过干密度、孔隙比、湿陷系数等室内试验和桩间土荷载试验、面波试验对比分析,桩间土地基承载力满足 设计要求,地基土体在0~6.0m深度内处理效果较差,而在6.0-15.0m范围内处理效果良好.地基处理效果评价 表明:改进成孔施工工艺,重新开展孔内深层强夯小区试验评价. [关键词]地基:强夯;湿陷性黄土:效果评价;试验 [中图分类号]TU472.3*1 [文献标识码]A [文章编号]1002-8498(2016)07-0089-03 Study on Foundation Treatment Effect Evaluation with DDC Method Mi Suting'.Zhou Lixin2 Zhou Huxin2 Huang Xiaobo (1.CEA Key Laboratory of Earthquake Prediction Institute of Earthquake Science China Earthquake Adminstration) Beijing 100036 China;2.Air Force Engineering Design Research Institute Beijing 100068 China; 3.Beijing Taisite Engineering Testing Co.Ld.Beijing 102600 China) Abstract:As a way of foundation treatment it is very important for engineering to study on treatment effect evaluation.Based on working parameters with indoor testing load-settlement testing and raleigh wave testing the treatment-effect is prehensively evaluated.Foundation bearing capacity can meet design demands.The treatment-effect is bad in 0~6.0m and well in 6.0~15.0m.According to the treatment-effect the working technology need to be improved and evaluated. Key words:foundations;dynamic paction;collapsible loess;effect evaluation;testing 1工程概况 性中等~强烈,湿陷等级Ⅳ.地基处理设计要求 场地处于西北黄土高原,属大陆性半干旱季风 为:处理深度范围内的黄土消除湿陷性,桩体密实 气候区,区域地质稳定.区内冲沟发育,山体...
孔内深层强夯地基处理效果评价.pdf
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