轻质混合土单向压缩固结变形特性分析  

Analysis of One-dimensional Compression Consolidation Deformation Properties of Lightweight Mixed Soil

作　　者：董金梅[1] 陈国兴[1] 柴寿喜[2] 王沛[2] 

机构地区：[1]南京工业大学土木工程学院,江苏南京210009 [2]天津城市建设学院土木工程系,天津300384

出　　处：《中国公路学报》2010年第1期38-42,共5页China Journal of Highway and Transport

摘　　要：通过无侧限抗压强度试验和单向压缩固结试验,对轻质混合土的单向压缩固结特性进行了分析,并采用简化公式对单向压缩固结变形随时间的变化关系进行拟合计算。结果表明:轻质混合土的单向压缩屈服应力与抗压强度为线性关系;在施加荷载没有超过压缩屈服应力的情况下,密度、水泥掺入比不同时,单向压缩固结变形曲线随时间变化的趋势相似,且密度、水泥掺入比对固结变形的影响小于荷载的影响。Based on laboratory experiment of unconfined compressive strength test and one dimensional compression consolidation test, one-dimensional compression consolidation properties of lightweight mixed soil were analyzed and a simplified formula was applied to fitting calculation of the relationship between one dimensional compression consolidation deformation and time. Results show that one dimensional compression yield stress and compressive strength are linear relation. When the load is no more than compression yield stress, the density and cement-mixed ratio are different; variational tendency of one-dimensional compression consolidation deformation vs time is similar; the influences of density and cement-mixed ratio on consolidation deformation are less than the influences of load on that.

关 键 词：道路工程 聚苯乙烯轻质混合土 单向压缩固结试验 压缩屈服应力 水泥掺入比 密度 

分 类 号：U416.16[交通运输工程—道路与铁道工程]