层间粘结失效后桥面沥青铺装层细观力学行为分析  

Meso⁃mechanical behavior analysis of asphalt bridge deck pavement after interlayer bonding failure

作　　者：司春棣[1,2] 崔亚宁 许忠印 凡涛涛 SI Chun-di;CUI Ya-ning;XU Zhong-yin;FAN Tao-tao(State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;School of Traffic and Transportation,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Xiongan Jingde Expressway Co.,Ltd.,Baoding 071700,China)

机构地区：[1]石家庄铁道大学,省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [2]石家庄铁道大学交通运输学院,石家庄050043 [3]河北雄安京德高速公路有限公司,河北保定071700

出　　处：《吉林大学学报（工学版）》2023年第6期1719-1728,F0003,共11页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2021YFB2600600,2021YFB2600601,2021YFB2600605);国家自然科学基金项目(11972237);河北省交通厅科技计划项目(JD-202007,JD-202006,JX-202010).

摘　　要：首先,通过室内单轴压缩试验、劈裂试验和斜剪试验及其数值仿真标定了沥青上面层、下面层及防水粘结层细观参数;然后,通过施加滚荷载和设置层间粘结失效区域,对各结构层材料的应力、位移、速度等力学行为进行监测。结果表明,沥青面层间的粘结失效会显著影响上面层与下面层顶部颗粒的应力和运动状态,且下面层颗粒横向应力响应明显变大;沥青面层与桥面板间的粘结失效导致下面层底部颗粒横向应力增大,层间出现横向移动趋势。通过监测层间粘结失效后不同结构层材料的力学状态变化可以预测桥面铺装层病害的发展,为桥面沥青铺装层预防性养护提供参考。Firstly,the mesoscopic parameters of asphalt upper layer,lower layer and waterproof bond layer were calibrated by uniaxial compression test,splitting test and oblique shear test.Then,by setting the failure area of interlayer bond,the stress,displacement and velocity of each structural layer was monitored.The results show that the bonding failure between asphalt surface layers significantly affects the stress and motion state of the top particles of the upper and lower layers,and the transverse stress of the bottom particles increases obviously.The bonding failure between the asphalt surface and the bridge panel leads to the increase of transverse stress of the particles at the bottom of the lower layer and the transverse movement trend between the layers.By monitoring the mechanical state changes of different structural layer materials after interlayer bonding failure,the development of bridge deck paving layer disease can be predicted,which can provide reference for preventive maintenance of asphalt bridge deck pavement.

关 键 词：道路工程 桥面铺装 离散元法 细观力学 层间粘结失效 

分 类 号：U414[交通运输工程—道路与铁道工程]