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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2010, Vol. 29 ›› Issue (4): 536-539.

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复合式路面层间夹层抗反射裂缝能力的模拟试验

凌天清1, 李修磊1, 张剑2, 周启伟1, 张曙光1, 郑智能1   

  1. 1.重庆交通大学土木与建筑学院, 重庆 400074; 2.重庆市江北嘴中央商务区开发投资有限公司, 重庆 400024
  • 收稿日期:2010-04-15 修回日期:2010-05-05 出版日期:2010-08-15 发布日期:2015-01-22
  • 作者简介:凌天清(1962—),男,四川资阳人,教授,工学博士,博士生导师,主要从事路基路面工程教学与研究。E-mail:lingtq@163.com。
  • 基金资助:
    重庆市交通科技重点项目(2007. 12 )

Study on Lab Simulation Test on Capability of Reflective Cracking Resistance of Composite Pavement with Interlayer Layer

LING Tian-qing1, LI Xiu-lei1, ZHANG Jian2, ZHOU Qi-wei1, ZHANG Shu-guang1, ZHENG Zhi-neng1   

  1. 1.School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, China; 2.Chongqing Jiangbei CBD Development and Investment Co., L td., Chongqing 400024, China
  • Received:2010-04-15 Revised:2010-05-05 Online:2010-08-15 Published:2015-01-22

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摘要： 为了探索不同夹层材料对延缓旧水泥路面沥青加铺层整体结构反射裂缝的效果,在现有国内外防反射裂缝 室内模拟试验的基础上,采用加载方式更接近于实际的轮辙仪进行模拟试验。对比研究了加铺经编玻纤格栅、 FHGS高强玻纤复合材料土工格栅(简称FHGS格栅)、聚酯玻纤布和橡胶沥青应力吸收层等4种防反射裂缝措施 与直接加铺沥青面层之间防反射裂缝效果的差距。试验结果表明:加铺经编玻纤格栅、FHGS格栅、聚酯玻纤布、橡 胶沥青应力吸收层与无防反措施相比,其加铺层顶部初裂轮载作用次数分别提高了2.65,2.26,2.04,1.61倍;终裂 轮载作用次数分别提高了4.34,3.97,3.31,2.61倍。考虑到尺寸效应的影响,在刚柔复合式路面的实际工程中应 当优先采用FHGS格栅作为防反射裂缝的措施。

关键词: 道路工程, 沥青加铺层, 反射裂缝, 夹层材料, 轮辙仪

Abstract: In order to explore the effect of different interlayermaterials on retarding reflective cracking of asphalt overlays on old cement concrete pavement, wheel tracking apparatus, closer to the actual situation, were employed to carry out simulation tests in the lab on the basis of lab simulation tests of anti-reflective cracking. Contrastive study was conducted on the effect of paving warp fiberg lass grating, FHGS high??strength fiberg lass composite geogrid ( hereinafter referred to as FHGS grid), fiberglass-polyester, rubber stress-absorbing layer and direct paving asphalt overlay. When cracks initially occurred, the number of rutting load of rubber stress-absorbing layer interlayers increased by 2.65 times, 2.26 times, 2.04 times and 1.61 times respectively. At the final cracking, the figures increased by 4.34 tim es, 3.97 times, 3.31 times and 2.61 times respectively. Taking the effect of size into account, it was suggested that priority should be given to FHGS in rigid-flexible pavement projects.

Key words: road engineering, asphalt overlay, reflective cracking, in terlayer materials, wheel tracking apparatus

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