Numerical simulation of thermal stress for reflective crack of asphalt pavement

MIAO Yu; WAN Yun-dong; DONG Yu-kai

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Numerical simulation of thermal stress for reflective crack of asphalt pavement

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- Numerical simulation of thermal stress for reflective crack of asphalt pavement
- Vol. 28, Issue S1, (2007)
- 作者机构：
  
  1. 华中科技大学土木工程与力学学院,武汉,430074
  2. 华中科技大学控制结构湖北省重点实验室,武汉,430074
  3. 漯河市公路管理局,河南,漯河,462000
- 作者简介：
- 基金信息：
- DOI：
  CLC： O241
- Online First：28 March 2014，
  
  Published：2007
- 稿件说明：
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MIAO Yu, WAN Yun-dong, DONG Yu-kai. Numerical simulation of thermal stress for reflective crack of asphalt pavement[J]. 2007, 28(S1).
DOI：

MIAO Yu, WAN Yun-dong, DONG Yu-kai. Numerical simulation of thermal stress for reflective crack of asphalt pavement[J]. 2007, 28(S1). DOI：

摘要

考虑了沥青的黏弹性，结合传热学理论，通过有限元数值模拟研究了在温度场作用下反射裂纹的应力场，探讨了不同温度场及不同道路设计参数对裂纹温度应力的影响。研究表明，由于气温交替变化，基层裂纹附近应力大于沥青的抗拉强度，进而导致裂纹扩展到路面形成路面裂纹。提出了采用聚合物纤维土工织物阻裂方案，通过数值模拟验证了其有效性。

Abstract

Based on theory of visco-elasticity and heat transfer

the stress of reflective crack under the thermal variation is studied by finite element simulation. The influence of variation stress fields and road design parameters on the thermal stress of the crack is discussed. It can be show that the surface stress near the crack is larger than the tensile strength of the asphalt

which leads to the crack propagation. The scheme of crack prevention

which uses the polyfibre geogrid

is put forward. Numerical results show that the validity of the present scheme.

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Related Institution

School of Civil Engineering & Mechanics, Huazhong University of Science & Technology

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