摘要
基于Winkler地基模型,应用ABAQUS有限元软件,按照"贡献面积"刚度分配原则,通过在相邻混凝土板侧面的对应结点设置弹簧单元,建立了考虑接缝传荷能力的机场刚性道面三维有限元分析模型。应用该模型,针对不同地基强度上的典型道面结构,分析了重型落锤式弯沉仪(HWD)承载板、单轴双轮和双轴双轮三种荷载形式作用在接缝一侧板边中部时,道面结构的板边应力和挠度;建立了承载板测得的挠度传荷系数与接缝刚度之间的关系模型,以及与不同形式荷载作用的应力折减系数之间的关系模型,可用于评价机场刚性道面的接缝传荷能力。
Based on Winkler foundation,a comprehensive 3D finite element model to analyze the structrual response of jointed rigid airport pavement was established by ABAQUS software.Bending stress and deflection for typical pavement structure on edge loading case were calculated under various landing assemblies with varying subgrade strength and joint stiffness.A new relationship model between the deflection load transfer efficiency obtained from bearing plate of Heavy Weight Deflectometer（HWD） and joint stiffness was established;relationship models between the deflection load transfer efficiencies and the stress load transfer efficiencies were also established.The results provided an approach to evaluate load transfer efficiency at joints for rigid airport pavement.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2011年第2期237-241,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
国家自然科学基金项目(51008255)
中央高校基本科研业务费专项资金项目(SWJTU09BR12)
关键词
机场
刚性道面
接缝
传荷能力
三维有限元
airport
rigid pavement
joint
load transfer efficiency
3D FEM
