摘要
文章基于有限元法对路桥过渡段非均匀支承状态下水泥混凝土路面结构的力学行为进行深入分析,建立符合实际情况的有限元模型,包括路面结构、网格划分和荷载作用等;采用液体地基模型模拟非均匀支撑条件,调整地基反应模量,研究过渡段长度和路基模量比对路面结构力学响应的影响。研究结果表明,设置过渡段可有效降低板底的弯拉应力和相对拉应力增大率,提高荷载传递能力;调整模量比和过渡段长度,可缓解路基非均匀程度对路面结构的影响,提高结构安全性和工程效益。
Based on the finite element method,this paper analyzes the mechanical behavior of cement concrete pavement structure under non-uniform support state in the transition section of road and bridge,and establishes a finite element model in line with the actual situation,including pavement structure,mesh division and load effect.The liquid foundation model is used to simulate the non-uniform support condition,and the foundation reaction modulus is adjusted to study the infl uence of the transition section length and the subgrade modulus ratio on the mechanical response of the pavement structure.The results show that the setting of the transition section can effectively reduce the flexural-tensile stress and the relative tensile stress increase rate at the bottom of the plate,and improve the load transfer capacity;adjusting the modulus ratio and the length of the transition section can alleviate the infl uence of the non-uniformity of the subgrade on the pavement structure,and improve the structural safety and engineering benefi ts.
作者
吴郁华
WU Yuhua(Guangzhou Municipal Engineering Machinery Construction Co.,Ltd.,Guangzhou 511399,Guangdong,China)
出处
《工程技术研究》
2024年第22期221-223,共3页
Engineering and Technological Research
关键词
有限元模型
非均匀支承
路桥过渡段
水泥混凝土路面
力学行为
finite element model
non-uniform support
road and bridge transition section
cement concrete pavement
mechanical behavior
作者简介
吴郁华,男,本科,高级工程师,研究方向为路桥结构和施工。
