力学与实践 ›› 2017, Vol. 39 ›› Issue (4): 336-342.DOI: 10.6052/1000-0879-17-002

• 应用研究 • 上一篇    下一篇

热应力作用下层合路面结构层间剥离内力分析

张乘胤1, 张能辉1,2, 翁振辉2, 王伟3   

  1. 1. 上海大学, 上海市应用数学和力学研究所, 上海市力学在能源工程中的应用重点实验室, 上海 200072;
    2. 上海大学理学院力学系, 上海 200444;
    3. 武汉二航路桥特种工程有限责任公司, 武汉 430077
  • 收稿日期:2017-01-04 修回日期:2017-04-23 出版日期:2017-08-15 发布日期:2017-08-10
  • 通讯作者: 张能辉,博士,教授,主要研究方向为生物芯片系统纳米力学和黏弹性结构的非线性振动.E-mail:nhzhang@shu.edu.cn
  • 基金资助:

    上海市浦江人才计划(15PJD016)和国家自然科学基金(11272193)资助项目.

INTERLAYER PEELING INTERNAL FORCES OF LAMINATED PAVEMENT STRUCTURES SUBJECTED TO THERMAL STRESSES

ZHANG Chengyin1, ZHANG Nenghui1,2, WENG Zhenhui2, WANG Wei3   

  1. 1. Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China;
    2. Department of Mechanics, College of Sciences, Shanghai University, Shanghai 200444, China;
    3. Wuhan Erhang Road and Bridge Special Engineering Co., Ltd., Wuhan 430077, China
  • Received:2017-01-04 Revised:2017-04-23 Online:2017-08-15 Published:2017-08-10

摘要:

温度变化会造成环氧树脂-混凝土特种路面结构边缘处产生脱层现象.基于层合结构热应力的两变量解析模型,推导了层间剥离力矩和剥离剪力.该方法避免了采用弹性理论求解局部复杂应力状态的困难,为解决层合结构边界脱层问题提供了新途径;由此,研究了环氧树脂层的厚度和弹性模量对层间剥离内力和混凝土层最大拉应力的影响.计算结果表明,通过控制环氧树脂层厚度和弹性模量,可有效降低剥离内力,避免剥离破坏.

关键词:

层合结构|边界脱层|热应力|界面内力|解析法

Abstract:

Epoxy resin (ER)-concrete pavement will be delaminated at the edges between layers due to temperature changes. In this paper, based on a two-variable analytical model for thermal stresses of laminated structures, the interlayer peeling moment and shear force are derived. In this way, the difficulty in solving the local variables by theory of elasticity is circumvented, and an alternative approach to coping with the edge delamination problem of multilayer structures is presented. Thereout, we investigate the impact of the thickness, elastic modulus of the ER layer on the internal forces of edge delamination and the maximum tension stress of the concrete layer. The calculated results show that the peeling internal forces could be effectively reduced by controlling the thickness and the elastic modulus of the ER-layer, thus the debonding failure is avoided.

Key words:

laminated structure|edge delamination|thermal stress|interfacial internal force|analytical method

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