碎石土路基填料压实及渗透特性研究  

Study on Compaction and Permeability Characteristics of Gravel Soil Subgrade Filler

作　　者：陈小翔 Chen Xiaoxiang(Zhangzhou Branch of Zhongji Engineering Technology Co.Ltd.,Zhangzhou,Fujian 363005)

机构地区：[1]中基工程技术有限公司漳州分公司,福建漳州363005

出　　处：《江西建材》2024年第10期52-54,共3页

摘　　要：为了优化路基填料碎石土设计,文中对不同条件下(含水量、含石量)碎石土的干密度、渗透系数和破碎率进行试验,分析碎石土路基填料压实及渗透特性。结果表明,碎石土的击实干密度随着含水量的增加呈现为先增加后降低的趋势;随着含石量的增加,碎石土的最大击实干密度先增加后降低,碎石土的渗透系数不断增加,碎石土破碎率呈现增加的趋势。当含水量为5%、含石量为60%时,碎石土破碎率分别比含石量为40%和50%的碎石土破碎率高22.5%、39.3%。碎石土击实破碎后,粒径小于0.15 mm的细颗粒出现显著的流失现象。In order to optimize the design of gravel soil,the dry density,permeability coefficient and crushing rate of gravel soil were tested under different conditions(water content and stone content),and the compaction and permeability characteristics of gravel soil were analyzed.The results show that the compaction dry density of gravel soil increases first and then decreases with the increase of water content.With the increase of stone content,the maximum compaction dry density of gravel soil increases first and then decreases,the permeability coefficient of gravel soil increases continuously,and the crushing rate of gravel soil increases.When the water content is 5%and the stone content is 60%,the broken rate of gravel soil is 22.5%and 39.3%higher than that of gravel soil with 40%and 50%stone content,respectively.The fine particles with a particle size less than 0.15mm were lost significantly after compaction.

关 键 词：碎石土 压实效果 渗透特性 含水率 

分 类 号：TU99[建筑科学—市政工程]