桩基托梁挡土墙在高陡填方路堤中的应用模拟分析  

Simulation Analysis on the Application of Pile Foundation Joist Retaining Wall in High and Steep Fill Embankment

作　　者：杨建国 Yang Jianguo(Zhonglu Qiming Transportation Science and Technology Co.,Ltd.,Taiyuan 030031,China)

机构地区：[1]中路启明交通科技有限公司,太原市030031

出　　处：《北方交通》2024年第6期66-69,共4页Northern Communications

摘　　要：文章依托某高陡填方路堤工程,通过数值模拟的方法分析了桩基托梁挡土墙在路堤边坡中的应用效果。分析结果表明:路面临空侧沉降值为111.5mm,为沉降最大位置点;挡墙最大水平位移为18.2mm,发生水平位移的同时还发生转动位移;桩身轴力和弯矩均自桩顶至下呈现出先增大后减小的变化趋势,且前排桩的轴力和弯矩均大于后排桩;最大轴力和弯矩分别为1518 kN和641 kN·m。通过配筋,能够满足桩身强度要求,从而提高工程经济性。Based on the project of high and steep fill embankment,the application effect of the pile foundation joist retaining wall in the embankment slope is analyzed by the numerical simulation.The analysis results show that:the settlement value of adjacent space of road surface is 111.5mm,which is the maximum position point of settlement;the maximum horizontal displacement of the retaining wall is 18.2mm,and horizontal displacement occurs simultaneously with rotational displacement;the axial force and bending moment of the pile body increase first and then decrease from the top of the pile to the bottom,and the axial force and bending moment of the pile of front row are greater than those of the pile of rear row;the maximum axial force and bending moment are 1518 kN and 641 kN·m respectively.Through reinforcement,the strength requirements of pile body can be met,so as to improve the engineering economy.

关 键 词：桩基托梁挡土墙 高陡路堤 沉降 位移 

分 类 号：U416.12[交通运输工程—道路与铁道工程]