Evaluation of Load Transfer Efficiency at Joints for Rigid Airport Pavement on Winkler Foundation

doi:10.3969/j.issn.1674-0696.2011.02.13

Journal of Chongqing Jiaotong University(Natural Science) ›› 2011, Vol. 30 ›› Issue (2): 237-241.DOI: 10.3969/j.issn.1674-0696.2011.02.13

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Evaluation of Load Transfer Efficiency at Joints for Rigid Airport Pavement on Winkler Foundation

ZHOU Zhengfeng¹, ²

1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China;2.MOE Key Laboratory of Highspeed Railway Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

Received:2010-12-12 Revised:2011-02-22 Online:2011-04-15 Published:2015-03-12

W inkler地基上机场刚性道面接缝传荷能力评价模型

周正峰¹，²

1.西南交通大学土木工程学院，四川成都610031; 2.西南交通大学高速铁路线路工程教育部重点实验室，四川成都610031

作者简介:周正峰(1981 — )，男，湖北荆州人，讲师，博士，主要从事道路与机场工程方面的研究工作。E-mail:zhouzf126@126.com。
基金资助:
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)

Abstract

Abstract: 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 assemb lies 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.

Key words: airport, rigid pavement, joint, load transfer efficiency, 3D FEM

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。

关键词: 机场, 刚性道面, 接缝, 传荷能力, 三维有限元

CLC Number:

U416.216

ZHOU Zhengfeng. Evaluation of Load Transfer Efficiency at Joints for Rigid Airport Pavement on Winkler Foundation[J]. Journal of Chongqing Jiaotong University(Natural Science), 2011, 30(2): 237-241.

周正峰，. W inkler地基上机场刚性道面接缝传荷能力评价模型[J]. 重庆交通大学学报（自然科学版）, 2011, 30(2): 237-241.

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Evaluation of Load Transfer Efficiency at Joints for Rigid Airport Pavement on Winkler Foundation

W inkler地基上机场刚性道面接缝传荷能力评价模型

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