车载引起的沥青路面内动水压力现场试验研究

doi:10.6040/j.issn.1672-3961.0.2015.098

山东大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 84-90.doi: 10.6040/j.issn.1672-3961.0.2015.098

车载引起的沥青路面内动水压力现场试验研究

汤潍泽¹, 欧金秋², 崔新壮¹, 楼俊杰¹, 肖溟¹, 张炯¹, 黄丹¹, 侯飞¹

1. 山东大学土建与水利学院, 山东济南 250061;
2. 华夏幸福基业股份有限公司, 北京 100027

收稿日期:2015-04-08 修回日期:2015-06-23 出版日期:2015-12-20 发布日期:2015-04-08
通讯作者: 崔新壮(1974-),男,山东寿光人,教授,博士,博导,主要研究方向为道路岩土力学.E-mail:cuixz@sdu.edu.cn E-mail:cuixz@sdu.edu.cn
作者简介:汤潍泽(1990-),男,河北衡水人,硕士研究生,主要研究方向为道路工程.E-mail:twzawyl@163.com
基金资助:
国家重点基础研究发展规划(973计划)资助项目(2015CB058101);国家自然科学基金资助项目(51479105,51279094,51308324,51379115);山东省杰出青年基金项目资助(JQ201416);教育部新世纪优秀人才基金资助项目(NCET-13-0340);山东省自然科学基金资助项目(ZR2013EEQ025);中国博士后基金资助项目(2014M561761);(山东大学基本科研业务费资助项目(2014YQ013)

Field test and research on vehicle load induced dynamic pore pressure in asphalt pavement

TANG Weize¹, OU Jinqiu², CUI Xinzhuang¹, LOU Junjie¹, XIAO Ming¹, ZHANG Jiong¹, HUANG Dan¹, HOU Fei¹

1. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China;
2. China Fortune Land Development Company Limited, Beijing 100027, China

Received:2015-04-08 Revised:2015-06-23 Online:2015-12-20 Published:2015-04-08

摘要/Abstract

摘要： 为了研究移动车载引起的动水压力对沥青路面水损坏产生的影响,探究路面层内动应力变化及动水压力的长消规律,利用自主研制的耐高温动应力和动水压力传感器,对现场行车荷载引起的动应力及动水压力进行实测,获取了动水压力的实测数据;并且基于Biot固结理论,利用一种反映移动效应的车轮荷载数值模拟方法,对实测工况下路面情况进行了动态流固耦合分析,定量研究了路面层内的动水压力长消规律。发现现场实测与数值模拟结果基本一致。沥青路面在周期行车荷载作用下,路面空隙中不断产生动水压力的泵吸作用,导致沥青混合料强度下降,进而引发水损坏。该成果验证了水损坏的水力驱动机理,为水损坏研究和路面设计提供了借鉴。

关键词: 沥青路面, 水损坏, 数值模拟, 动水压力, 现场测试

Abstract: In order to study the influence on moisture damage of asphalt pavement caused by dynamic pore pressure due to moving vehicle loads, and explore the time histories of dynamic stress and dynamic pore pressure in the pavement surface layers, the heat-resistant dynamic stress and pore pressure sensors were developed and used to measure the dynamic stresses and pore pressures in the field, and the field measured data of dynamic pore pressure was acquired. Based on the Biot's consolidation theory, a numerical fluid-solid coupling simulation method reflecting mobile effect of wheel load was used to analyze the response of pavement under the actual condition. The time history of dynamic pore pressure in pavement was quantitatively analyzed. Numerical simulation results matched well with in situ test data. The pump-suction effect of dynamic pore pressure that continuously generated in pavement void under cyclical vehicle loads led to the reduce of the asphalt-aggregate bond strength and further triggered the moisture damage. This study verified the hydraulic drive mechanism of moisture damage, and provided a theoretical guild for the moisture damage research and pavement design.

Key words: field test, asphalt pavement, dynamic pore pressure, numerical simulation, moisture damage

中图分类号:

TU416.217

汤潍泽, 欧金秋, 崔新壮, 楼俊杰, 肖溟, 张炯, 黄丹, 侯飞. 车载引起的沥青路面内动水压力现场试验研究[J]. 山东大学学报(工学版), 2015, 45(6): 84-90.

TANG Weize, OU Jinqiu, CUI Xinzhuang, LOU Junjie, XIAO Ming, ZHANG Jiong, HUANG Dan, HOU Fei. Field test and research on vehicle load induced dynamic pore pressure in asphalt pavement[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2015, 45(6): 84-90.

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车载引起的沥青路面内动水压力现场试验研究

Field test and research on vehicle load induced dynamic pore pressure in asphalt pavement

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