用碎石桩处理软土固结分析  

Analysis on soft soil consolidation processed with gravel pile

作　　者：樊敬亮[1] 姚卫东 

机构地区：[1]江苏省有色金属华东地质勘查局,江苏南京210007 [2]镇江市建科工程质量检测中心有限公司,江苏镇江212000

出　　处：《山西建筑》2012年第22期88-90,共3页Shanxi Architecture

摘　　要：推导了等应变条件下考虑桩阻作用时的碎石桩复合地基固结方程,同时对复合地基的固结特性做了讨论,结果表明:当长细比较大、桩体渗透系数较小时,桩阻对固结速率影响较大;随着长细比的增大,桩体渗透系数对复合地基固结速率的影响逐渐增大;当桩阻较大时,虽然复合地基具有应力集中效应,但固结速率仍小于不考虑井阻作用时的砂井地基固结速率。The paper induces the composite foundation consolidation equation with gravel pile by considering the pile friction under the condition of equal strain,and discusses the consolidation characteristics of composite foundation.Results show that： the impact of pile friction upon consolidation ratio is bigger,while the length is bigger and the pile penetration coefficient is smaller,the impact of pile penetration coefficient upon composite foundation consolidation ratio will grow with the length growing larger,when the pile friction is bigger,although the composite foundation has strain concentration effect,the consolidation ratio is still smaller than the sandy well foundation consolidation ratio without considering the well friction.

关 键 词：碎石桩 固结 软土 

分 类 号：TU473.1[建筑科学—结构工程]