高速公路组合扶壁式挡土墙力学特性研究  

Study on Mechanical Characteristics of Combined Buttress Retaining Wall of Expressway

作　　者：欧剑 OU Jian(China Rallway 25th Bureau Group Corporation Limited,Guangzhou 510400,China)

机构地区：[1]中铁二十五局集团有限公司,广州510400

出　　处：《价值工程》2025年第6期1-5,共5页Value Engineering

基　　金：中铁二十五局集团有限公司科技研究开发计划项目课题(25G-2020-003)。

摘　　要：为研究交通荷载下高速公路组合扶壁式挡土墙的力学特性,采用通用有限元软件建立了组合扶壁式挡土墙-墙后填土的相互作用数值模型。基于新建模型研究了组合扶壁式挡土墙及其连接件在交通荷载下的应力及位移分布规律。研究表明交通荷载下组合扶壁式挡土墙不同方向的最大应力均出现在扶壁右下靠近土体一侧,且底板内钢筋笼靠近墙趾部分相较于墙踵处在墙高方向上的位移更大。期望本文研究能够为组合扶壁式挡土墙设计与施工提供一定理论参考。In order to study the mechanical characteristics of highway combined buttress retaining wall under traffic load,a numerical model of combined buttress retaining wall back fill interaction is established by using the general finite element software.Based on the model,the stress and displacement distribution of combined buttress retaining wall and its connectors under traffic load are studied.Numerical results show that the maximum stress in different directions of the combined buttress retaining wall under traffic load appears on the side near the soil at the lower right of the buttress,and the displacement of the reinforcement cage in the bottom plate near the wall toe is greater than that in the wall heel.It is expected that this study can provide some theoretical reference for the design and construction of composite buttress retaining wall.

关 键 词：高速公路 扶壁式 挡土墙 力学特性 有限元 

分 类 号：TU473[建筑科学—结构工程]