水泥土挤密桩法对宁夏黄土湿陷性处理的试验研究  

Experimental Study on the Treatment of Loess Collapsibility in Ningxia Using Cement Soil Compaction Pile Method

作　　者：黄卫平 马壮 HUANG Weiping;MA Zhuang(Ningxia Transportation Construction Co.,Ltd.;Ningxia Hui Autonomous Region Road Transport Affairs Center,Yinchuan,Ningxia Hui Autonomous Region,750004 China)

机构地区：[1]宁夏交通建设股份有限公司 [2]宁夏回族自治区道路运输事务中心,宁夏银川750004

出　　处：《大众科学》2024年第14期95-97,共3页China Public Science

摘　　要：宁夏南部山区位于湿陷性黄土发育地段,由于湿陷性黄土处理不彻底,出现不均匀沉降,成为该地区高速公路主要病害。水泥土挤密桩作为湿陷性黄土处理的主要方式之一,在该地区也被广泛应用。研究了同一桩径、不同桩间距、不同水泥剂量的水泥土挤密桩对宁夏地区典型黄土湿陷性消除效果,通过测定不同深度桩体压实度、桩间土挤密系数、承载力、湿陷性系数等检测指标,研究确定水泥土挤密桩处理本地区湿陷性黄土的功效,并通过试验段确定最佳的施工工艺及施工参数,为本项目水泥土挤密桩法处理湿陷性黄土地基提供施工质量的控制和检测经验。The southern mountainous areas of Ningxia are located in areas with developed collapsible loess.Due to incomplete treatment of collapsible loess,uneven settlement has become the main disease of highways in this area.Cement soil compaction piles,as one of the main methods for treating collapsible loess,are also widely used in this area.This article studies the effect of cement soil compaction piles with the same pile diameter,different pile spacing,and different cement dosage on the elimination of typical loess collapsibility in Ningxia region.By measuring the compaction degree of piles at different depths,soil compaction coefficient between piles,bearing capacity,and collapsibility coefficient,the effectiveness of cement soil compaction piles in treating collapsible loess in the local area is determined.The optimal construction process and parameters are determined through experimental sections.Provide construction quality control and testing experience for the treatment of collapsible loess foundation using cement soil compaction pile method in this project.

关 键 词：水泥土挤密桩 湿陷系数 地基承载力 桩体压实度 

分 类 号：U416[交通运输工程—道路与铁道工程]