水泥土半刚性板层加固软土路基试验  

Experiment of Reinforced Soft Roadbed with Semi-rigid-floor Made of Cement Soil

作　　者：李清[1] 王汉军[2] 乔传印[1] 

机构地区：[1]中国矿业大学北京力学与建筑工程学院,北京100083 [2]北京工业职业技术学院建筑工程系,北京100042

出　　处：《中国公路学报》2008年第3期24-29,共6页China Journal of Highway and Transport

基　　金：国家西部交通建设科技项目(200331895423)

摘　　要：针对新疆广泛存在的盐渍化软弱土,采用水泥土形成一定厚度的半刚性板体结构加固软土路基,从而降低路堤高度,减少建设成本。借助室内试验和现场试验路段试验,测试了水泥土半刚性板的沉降、变形等室内外工程特性。结果表明:掺入水泥能明显提高低液限粉土的强度及回弹模量;半刚性板层增强了软土路基的整体刚度,减小了浅层软土路基的整体沉降及不均匀沉降;水泥土半刚性板充分调动了下卧软土层的承载力,能够满足公路荷载使用要求,较好地解决了软土地区的路基加固问题。Due to the widely existence of saline soft soil in Xinjiang, it was used to reduce the depth of embankment and consolidate these soft soil foundations and cost by using a finite thickness of semi-rigid-floor made of cement soil （SRFCS）. Authors investigated synthetically on the engineering characteristics of SRFCS settlement and displacement both in laboratory and site test road. The results show that the SRFCS can significantly increase the intensity and resilient modulus of the silt of low liquid limit. SRFCS not only strengthens the entire rigidity of soft roadbed, but also decreases entire settlements and differential settlements of shallow soft roadbed. SRFCS can also utilize sufficiently bearing capacity of below soft soil. It can satisfy the utilization necessity of highway load and solve roadbed reinforcement problems of soft soil region effectively.

关 键 词：道路工程 盐渍化软土路基 试验研究 水泥土半刚性板 

分 类 号：U416.166[交通运输工程—道路与铁道工程]