高速道路扩建工程中新老路基差异变形分析  

Analysis of Differential Settlement between Old and New Roadbase in High Speed Road Expansion Project

作　　者：王小兵 秦金龙 樊帆 刘彤 童立红 丁海滨 WANG Xiao-bing;QIN Jin-long;FAN Fan;LIU Tong;TONG Li-hong;DING Hai-bin(Nuclear Industry Eastern China Construction Engineering Group Ltd.,Nanchang,Jiangxi,330000,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang,Jiangxi,330013,China)

机构地区：[1]核工业华东建设工程集团有限公司,江西南昌330000 [2]华东交通大学土木建筑学院,江西南昌330013

出　　处：《建材技术与应用》2024年第4期18-23,共6页Research and Application of Building Materials

摘　　要：为满足日益增长的交通量需求,公路改扩建工程逐渐增多,减少高速道路新老路基部位的不均匀沉降是保障道路通行质量及安全的关键。为研究不同施工方案对于新老路基沉降的影响,利用PLAXIS 3D建立路基数值模型,对土工格栅、开挖台阶和新建道路下方加固土体的施工方案进行数值分析,研究各参数对于道路沉降的影响,并对各施工参数进行优化和安全性分析,保障道路经济性和安全性。In order to meet the increasing traffic demand,highway reconstruction and expansion projects are gradually increasing,and reducing the uneven settlement of the new and old roadbed is the key to ensure the road quality and safety.In order to study the influence of different construction schemes on the settlement of new and old roadbed,PLAXIS 3D was used to establish a numerical model of roadbed,and numerical analysis was carried out on the construction schemes of geogrids,excavation steps and soil reinforcement under new roads.The influence of each parameter on road settlement was studied,and optimization and safety analysis of each construction parameter was carried out to ensure the economy and safety of roads.

关 键 词：路基拓宽 差异沉降 数值模拟 参数优化 

分 类 号：U416.1[交通运输工程—道路与铁道工程]