黄河三角洲含盐水泥土桩复合地基模型试验及优化设计  

Laboratory Model Test and Optimization Design of Salty Soil-Cement Piles Composite Foundation at the Yellow River Delta

作　　者：王忠啸 苏俊伟 崔新壮[1,2] 卢途 车华桥 张磊 崔社强[1] WANG Zhong-xiao;SU Jun-wei;CUI Xin-zhuang;LU Tu;CHE Hua-qiao;ZHANG Lei;CUI She-qiang(School of Civil Engineering,Shandong University,Jinan 250061,China;Shenzhen Research Institute of Shandong University,Shenzhen 518057,China;Department of Highway,Shandong Institute of Highway Technician,Jinan 250104,China)

机构地区：[1]山东大学土建与水利学院,济南市250061 [2]山东大学深圳研究院,深圳市518057 [3]山东公路技师学院公路系,济南市250104

出　　处：《公路》2018年第12期65-72,共8页Highway

基　　金：国家自然科学基金项目,项目编号51778346、51479105;深圳市科技研发基金项目,项目编号JCYJ20160429183630760

摘　　要：水泥土搅拌桩在黄河三角洲道路复合地基处理中应用愈加广泛。针对滨德高速公路盐渍土地基处治的复杂性,通过开展室内模型试验研究了含盐水泥土桩劣化及边桩桩长对道路复合地基沉降的影响,并从结构和材料双重角度提出复合地基耐久性设计方案,借助数值模拟的方法对各方案的参数选取进行了优化论证,从而弥补了含盐水泥土桩劣化效应的缺陷,为黄河三角洲咸水区道路复合地基的设计提供了一定的参考。Soil-cement mixing piles have been widely used in road composite foundation treatment at the yellow river delta.Aiming at the complexity of saline soil foundation treatment of Binzhou-Dezhou Expressway,the impact of salty cement-soil pile deterioration and side pile length on the settlement of road composite foundation are studied through laboratory model tests.The design scheme of composite foundation durability is proposed from the perspectives of both structures and materials,and the parameter selection of each scheme is optimized by means of numerical simulation,which makes up for the defects of salty soil-cement piles and provides certain reference for design of the road composite foundation at the Yellow River delta salt-water area.

关 键 词：黄河三角洲 道路工程 含盐水泥土桩 模型试验 复合地基 优化设计 数值模拟 

分 类 号：TU472.32[建筑科学—结构工程]