Mechanic Analysis on Defending Reflective Crack of Perpetual Asphalt Pavement with Rigid Base

Journal of Chongqing Jiaotong University(Natural Science) ›› 2010, Vol. 29 ›› Issue (5): 714-717.

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Mechanic Analysis on Defending Reflective Crack of Perpetual Asphalt Pavement with Rigid Base

LING Tian-qing¹, LAI Hui¹, WEI Gang², ZHENG Zhi-neng¹, GAO Jian²

1.Chongqing Key Laboratory of Mountain Road Structure & Materials, Chongqing Jiaotong University, Chongqing 400074, China; 2.Northern Corporation, Chongqing Expressway Group Co.L td, Chongqing 401147, China

Received:2010-05-31 Revised:2010-07-10 Online:2010-10-15 Published:2015-01-22

刚性基层长寿命沥青路面抗反射裂缝力学分析

凌天清¹, 赖辉¹, 韦刚², 郑智能¹, 高建²

1.重庆交通大学山区道路结构与材料重庆市重点实验室, 重庆 400074; 2.重庆高速公路集团有限公司北方公司, 重庆 401147

作者简介:凌天清(1962—),男,四川资阳人,教授,博士生导师,从事路基路面工程研究。E-mail:lingtq@163.com。
基金资助:
重庆市交通委员会重点科技项目( 200707)

Abstract

Abstract: What causes the reflective cracking at the bottom of asphalt layer on perpetual asphalt pavement with rigid base is the excessive stress of the bottom of asphalt surface caused by the contact of the cement concrete stress concentration.The Abaqus finite element software is utilized to calculate the stress state of the bottom seam of asphalt layer under the action of vehicles'load. Meanwhile, the influence of delaying reflective cracking is analyzed by using the influence factors,such as different stress absorbing layers, axle load, seam width, asphalt surface layer thickness and modulus, cement concrete thickness and modulus, foundation modulus.

Key words: road engineering, perpetual pavement, rigid base, reflective crack, stress, Abaqus

摘要： 刚性基层长寿命沥青路面沥青层底部的反射裂缝,是由水泥混凝土板接缝处应力集中导致沥青面层底部应力过大引起的。应用Abaqus有限元软件计算车辆荷载作用下沥青层底部接缝处的应力状态,分析了应力吸收层类型、车辆轴载、接缝宽度、沥青面层厚度与模量、水泥混凝土基层厚度与模量、基础模量等因素对延缓反射裂缝的影响。

关键词: 道路工程, 长寿命路面, 刚性基层, 反射裂缝, 应力, Abaqus

CLC Number:

U416.22

LING Tian-qing, LAI Hui, WEI Gang, ZHENG Zhi-neng, GAO Jian. Mechanic Analysis on Defending Reflective Crack of Perpetual Asphalt Pavement with Rigid Base[J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(5): 714-717.

凌天清, 赖辉, 韦刚, 郑智能, 高建. 刚性基层长寿命沥青路面抗反射裂缝力学分析[J]. 重庆交通大学学报（自然科学版）, 2010, 29(5): 714-717.

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Mechanic Analysis on Defending Reflective Crack of Perpetual Asphalt Pavement with Rigid Base

刚性基层长寿命沥青路面抗反射裂缝力学分析

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