密实砂土内摩擦角对地基承载力性状影响分析与研究

英文篇名：密实砂土内摩擦角对地基承载力性状影响分析与研究
中文刊名：中外建筑
英文刊名：Chinese and Overseas Architecture
作者：李碧松 ; 钟辉虹
中文关键词：承载力因数 ; 峰值内摩擦角 ; 剩余内摩擦角 ; 渐进破坏
英文关键词：Bearing capacity factor ; the peak friction angle ; the residual friction angle ; progressive failure.
出版日期：2004-06-20
机构：株洲市工程质量安全监督站 ,株洲工学院
年：2004
期：03
出版单位：中外建筑

摘要

通过对密实砂土进行一系列三轴排水压缩试验,探讨了砂土的峰值内摩擦角φmax和剩余内摩擦角φres随应力水平的变化规律。运用三轴试验以及离心试验结果,从数值上计算并分析了土的内摩擦角对承载力因数Ny的影响;即承载力因数Ny随着基础尺寸增加而减小是因为土的内摩擦角随着应力水平增加而减小以及土渐进破坏所致,实际内摩擦角值在φmax和φres之间。
Based on a series of drained triaxial compression tests the peak friction angle( )and the residual friction angle( )of sand change with stress level were investigated.Using the triaxial test data and the centrifuge test results,quantitative estimation and analysis of the effect of soil friction angle on the bearing capacity factor( )has been presented.The decrease of with footing size is due to the fact that soil friction angles and decrease with stress level and progressive failure of soil,which reduces soil frction angle to a value between and .

引文

1华南理工大学等四校合编地基及基础M(第二版)北京:中国建筑工业出版社,1992.210229152
    2DeBeerEE.BearingcapacityandsettlementofshallowfoundationsonsandC.BearingCapacityandSettlementofFoundationsSymposiumDuckUniversityDurhamNC1965a.1534
    3章为民等砂性地层地震反应离心模型试验研究J岩土工程学报,2001,(1):2831
    4华东水利学院土力学教研室主编,土工原理与计算(上册)M,北京:水利电力出版社,1982,323346
    5刘成宇,土力学M,北京:中国铁道出版,1995,171
    6ZhuFClarkJIPhillipsRKosarKMCentrifugemodelingofringfootingsCThe49thCanadianGeotechnicalConferenceSt.John'sNfld1996.2539.