轻质泡沫混凝土在路基改扩建中的应用研究  

Research on the Application of Lightweight Foam Concrete in Subgrade Reconstruction and Expansion

作　　者：孙强 Sun Qiang(Shanxi Highway Engineering Supervision Technology Consulting Co.,Ltd.,Taiyuan 030006,China)

机构地区：[1]山西省公路工程监理技术咨询有限公司,太原市030006

出　　处：《北方交通》2024年第3期48-51,共4页Northern Communications

摘　　要：文章依托工程实例,采用Midas GTS NX有限元软件对轻质泡沫混凝土路基的改扩建情况进行模拟,分析改扩建部分轻质路基的变形以及钢管桩的受力特性。研究认为,改扩建路基临空面的水平位移值与泡沫轻质混凝土的高度呈正相关,且路基顶面的水平位移值随距离路基中线位置呈先增大后减小的趋势,竖直位移值则呈“S”形减小趋势。同时,钢管桩的设置有利于提高扩建路基的整体稳定性,其所受的剪力和弯矩值在桩身上部和下部较大。Based on engineering examples,this article uses Midas GTS NX finite element software to simulate the reconstruction and expansion conditions of lightweight foam concrete subgrade,and analyzes the deformation of the lightweight subgrade in the reconstruction and expansion as well as the stress characteristics of steel pipe piles.At the same time,the installation of steel pipe piles is conducive to improving the overall stability of the expanded subgrade,and the shear force they bear and bending moment values are greater in the upper and lower parts of the pile body.

关 键 词：泡沫混凝土 路基填方 改扩建 数值模拟 

分 类 号：U416.1[交通运输工程—道路与铁道工程]