市政道路高填深挖路基边坡的设计与施工技术研究  

The Design and Construction Technology of High-Fill and Deep-Excavation Roadbed Slope for Municipal Road

作　　者：乔亚涛 QIAO Yatao(The Third Engineering Co.,Ltd.of the China Railway 18th Bureau Group,Baoding 072750,China)

机构地区：[1]中铁十八局集团第三工程有限公司,河北保定072750

出　　处：《徐州工程学院学报(自然科学版)》2025年第1期72-78,共7页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

摘　　要：高填深挖路基边坡的稳定性是市政道路工程中的关键.由于填挖作业改变了原有的地形地貌和地质结构,路基边坡在长期的自然和人为因素作用下(如大气降水、交通荷载等),容易出现失稳、滑坡等工程病害.这些病害不仅影响道路的正常使用,还可能对人民生命财产安全构成严重威胁.因此,研究市政道路高填深挖路基边坡的设计与施工技术.以八一大道道路工程为研究对象分析该区域基本情况,通过边坡稳定性分析软件计算确定了边坡稳定系数,并设计了锚杆、锚索的布置参数.施工过程中采用BFRP锚杆与普通钢筋进行对比支护,同时实施了挂网和喷播植草的生态防护措施.施工后,使用ANSYS有限元软件模拟测试该支护加固结构使用后边坡的安全系数,通过位移测试确定支护加固工况,设定低温环境与降水环境验证施工效果.模拟结果显示:该支护加固设计锚杆长度为10.0 m时安全系数较高;使用该支护加固设计位移量最小,但是低温冻结会增大位移,且该支护加固设计即使经受长时间雨水作用,仍旧保持合理应力,安全性与稳定性较高.The stability of high-fill and deep-excavation subgrade slopes is of critical importance in the field of municipal road engineering.The alteration of the original topography,landform and geological structure caused by filling and excavation operations renders subgrade slopes susceptible to engineering hazards such as instability and landslides under the long-term influence of natural and anthropogenic factors(e.g.atmospheric precipitation,traffic loads).These hazards have the potential to not only hinder the effective use of roads but also pose a significant threat to human life and property.Consequently,there is a compelling need to investigate and develop effective design and construction methodologies for high-fill and deep-excavation subgrade slopes within municipal road infrastructure.The road project of Bayi Avenue was selected as the research object,and the following research methodology was employed:firstly,an analysis of the basic conditions of the area was conducted;secondly,the slope stability coefficient was calculated and determined using slope stability analysis software;thirdly,the layout parameters for anchor rods and anchor cables were designed.During the construction process,BFRP anchor rods were compared with ordinary steel rebars for support,and ecological protection measures such as hanging nets and hydroseeding were implemented.Following construction,the ANSYS finite element software was utilized to simulate and test the safety coefficient of the slope after the implementation of the support and reinforcement structure.The reinforcement support conditions were determined through displacement testing,and a low-temperature environment and precipitation environment were established to verify the construction effect.The simulation results demonstrate that the safety coefficient is higher when the anchor rod length in this support and reinforcement design is 10 meters.The utilization of this support reinforcement design results in the lowest displacement,however,low temperature freezing will incr

关 键 词：市政道路 高填深挖 路基边坡 设计与施工 稳定性 ANSYS有限元 

分 类 号：U417.1[交通运输工程—道路与铁道工程]