Dynamic response analysis of asphalt pavement with multiple cracks

LONG Xiao-hong; ZHANG Cheng; ZHANG Qing-jun; JIN Xiang-yue

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Dynamic response analysis of asphalt pavement with multiple cracks

更新时间：2026-06-25

- Dynamic response analysis of asphalt pavement with multiple cracks
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  1. 华中科技大学土木工程与力学学院,武汉,430074
  2. 河南省交通建设工程有限公司,郑州,450000
- 作者简介：
- 基金信息：
- DOI：
  CLC： U416.27
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
LONG Xiao-hong, ZHANG Cheng, ZHANG Qing-jun, et al. Dynamic response analysis of asphalt pavement with multiple cracks[J]. 2011, 32(S2).
DOI：

LONG Xiao-hong, ZHANG Cheng, ZHANG Qing-jun, et al. Dynamic response analysis of asphalt pavement with multiple cracks[J]. 2011, 32(S2). DOI：

摘要

考虑沥青材料的黏弹性，结合动力学和断裂力学理论，通过有限元数值模拟研究了含多裂纹沥青路面在移动交通荷载作用下的动力特性，考察了裂纹间距变化对动态应力强度因子以及裂纹尖端应力的影响。研究结果表明，在移动交通荷载作用下基层底面裂纹处于Ⅰ、Ⅱ型动态应力强度因子交替控制下；裂纹间距增大，对基底裂纹应力强度因子的影响逐渐减小；表面裂纹尖端在移动荷载距其较近时受压应力，且随裂纹间距增大，最大压应力先微弱减小后逐渐增大；在移动荷载经过表面裂缝时，裂缝尖端经历了方向相反的剪切作用，随着裂纹间距的增大，最大剪应力呈现先减小后增大的趋势。同时对加铺土工布这一阻裂措施利用数值模拟进行了验证。

Abstract

Combining the dynamics and fracture mechanics

and based on the theory of viscoelasticity

the dynamic response of the asphalt pavement with multiple cracks under vertical load is discussed by finite elements numarical simulation. The effects of crack spacing on the stress intensity factors and the stress of the crack tip are analyzed. The numerical results show that the base bottom crack is determined by types I and II stress intensity factors alternately. As the crack spacing increasing

its influence on the stress intensity decreases. The stress on the tip of the top-down crack induced by the dynamic loads is compressive. With increasing cracking spacing

the compressive stress and the maximum of shear stress first decreases and then increases. The numerical results also show that the effectiveness of using geotextiles for anti-cracking.

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