摘要
为研究沿海地区软土地基上的高速公路拓宽改建工程的侧向变形规律、竖向变形规律及时空特性,以浙江地区某高速公路改扩建工程某段路堤为研究对象,利用Midas GTS NX有限元软件,进行数值模拟计算。研究结果表明:当前老路沉降尚未完成,在采取了老路路基边坡开挖成台阶状、新路基上路床设置高强土工格栅、新路基采用管桩进行地基处理等措施后,在拓宽工程完成后的20年内,新老路基变形、沉降协调一致。
In order to study the lateral deformation,vertical deformation and spatial-temporal properties of highway widening and reconstruction project on soft soil foundation in coastal area,the numerical simulation is carried out by using Midas GTS NX software to study the embankment of a highway reconstruction and expansion project in Zhejiang Province.The results show that the settlement of the old road has not been completed.After adopting the measures of excavating the slope of the old road subgrade into steps,setting high-strength geogrid on the new subgrade bed,and adopting tubular piles for foundation treatment of the new subgrade,the deformation and settlement of the new and old subgrade are consistent within 20 years after the widening project is completed.
作者
张莹莹
史宇宙
周建烽
Zhang Yingying;Shi Yuzhou;Zhou Jianfeng(Zhejiang Institute of Communications Co.,Ltd.,Hangzhou 310000,China;College of Civil Engineering,Huaqiao University,Xiameng 361021,Fujian,China)
出处
《科技通报》
2022年第12期65-70,共6页
Bulletin of Science and Technology
基金
福建省自然科学基金项目(2019J05088)
关键词
软土地基
拓宽改建
数值模拟
时空特性
soft soil foundation
widening and reconstruction
numerical simulation
spatial-temporal properties
