素填土桩挤密地基设计及其检测分析  

Design of foundation subsoil with plain fill compacted pile and its analysis by Checking

作　　者：马良荣 张刚[2] 郑璐石[2] 孔亮[2] 

机构地区：[1]宁夏电力设计院,宁夏银川750001 [2]宁夏大学物理电气信息学院,宁夏银川750021

出　　处：《宁夏工程技术》2007年第2期133-136,140,共5页Ningxia Engineering Technology

基　　金：宁夏自然科学资助项目(NZ0514)

摘　　要：针对素填土挤密桩加固湿陷性黄土地基中容易出现的一些问题,根据宁夏南部地区田老庄变电所110 kV建设工程地基处理的基本情况,详细阐述了素填土挤密桩的设计方法、加固机理、检测过程等.通过对地基处理前后的分析作出的相关参数对比图把地基处理的效果直观地显示出来.从理论上推导以适当的桩径、桩间距和天然孔隙比来预测地基处理效果的公式,结合图表及推导分析指出了工程实际中应该注意的若干问题,从而对其机理及结果形成完整的认识,有望能用于指导工程实践.Aiming at the problems existed in the process of stabilizing the collapsible loess foundation subsoil using compacted plain fill pile. Based on the foundation subsoil treatment work of the 110 kV transformer substation in the south area of Ningxia, the paper states the methods of design, reinforcement mechanism and checking process of the foundation subsoil with plain fill compacted pile;through the analysis of before and after the foundation subsoil treatment, contrasting relevant parameter before and after the ground treatment, the results of the foundation subsoil treatment are clearly showed; formula theoretic which can predict the result of the treatment by using proper diameter of the pile, and the distance between each pile and void ratio also be presented. With the diagram and analysis, the paper puts forword some problems that should be recognized during practical engineering, and forms an integrated knowledge of the mechanism and result of stabilizing the collapsible loess foundation subsoil using compacted plain fill pile.

关 键 词：素填土挤密桩 湿陷性黄土地基 承载力 沉降量 

分 类 号：TU475.35[建筑科学—结构工程]