首页 | 本学科首页   官方微博 | 高级检索  
     

水泥土群桩承载力特性的原位试验研究
引用本文:马海龙,陈云敏.水泥土群桩承载力特性的原位试验研究[J].浙江大学学报(自然科学版 ),2004,38(5):593-597.
作者姓名:马海龙  陈云敏
作者单位:浙江大学土木工程学系,浙江大学土木工程学系 浙江杭州310027,浙江杭州310027
基金项目:江苏省科技厅社会发展基金
摘    要:通过现场足尺试验,研究了软土中水泥土群桩的承载力特性.利用埋设的土压力盒等测试元件,针对单桩、四桩、九桩复合地基情况,分别测试了承台土反力、桩身轴力及复合地基变形等参数.从影响水泥土桩复合地基承载力的三大控制要素着手,根据系统的原位试验结果,定量分析了桩长、桩间距、桩数等对水泥土群桩复合地基承载力特性的影响.结果发现,发挥承载力的临界桩长为12倍桩直径,增大置换率能显著提高复合地基承载力,群桩复合地基承载力约为单桩复合地基承载力的80%.

关 键 词:水泥土桩  原位试验  复合地基  承载力特性  群桩
文章编号:1008-973X(2004)05-0593-05
修稿时间:2003年6月9日

Experimental study on bearing capacity property of cement-soil pile group in situ
MA Hai-long,CHEN Yun-min.Experimental study on bearing capacity property of cement-soil pile group in situ[J].Journal of Zhejiang University(Engineering Science),2004,38(5):593-597.
Authors:MA Hai-long  CHEN Yun-min
Abstract:Systematic in situ tests were carried out to study the bearing capacity of composite foundation with cement-soil piles in soft clay.Data on pressure under cap,axis force along pile and composite founda-tion deformation were obtained through those tests.The composite foundation tests included those for sin-gle pile,four piles,and nine piles.Three key factors which strongly influence bearing capacity were dis-cussed to show their influences on the composite foundation bearing capacity in those cases.The valid pile length which can contribute to capacity was about12times pile diameter;increase in replacement ratio could enhance the bearing capacity markedly,and the pile group composite foundation bearing capacity was about80percent that of the single pile.
Keywords:cement-soil  pile  test  in  situ  composite  foundation  capacity  property  pile  group
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号