层间界面对混凝土桥面铺装结构性能的影响  

Effect of interlayer interface on structural performance of concrete bridge deck pavement

作　　者：徐鸥明[1] 韩森[2] 于静涛 

机构地区：[1]长安大学材料科学与工程学院,陕西西安710061 [2]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [3]中国公路工程咨询集团有限公司中咨华科交通建设技术有限公司,北京100195

出　　处：《长安大学学报（自然科学版）》2009年第5期17-20,53,共5页Journal of Chang’an University(Natural Science Edition)

基　　金：国家西部交通建设科技项目(200731822301);陕西省交通科技项目(05-05K)

摘　　要：为了评价混凝土桥面铺装层层间界面形式对结构性能的影响,利用复合试件的高温性能试验和疲劳后层间剪切试验,研究了不同界面形式对铺装层高温性能的影响,以及不同界面形式层间抗剪强度随弯拉疲劳次数的变化情况。结果表明:层间界面纹理形式对铺装层高温性能及层间抗剪强度随弯拉疲劳的衰减有显著影响;纹理越丰富,且主要以微观纹理为主的界面,越有利于扩散荷载应力,减小铺装层受力,间接提升铺装层抗变形能力;以界面摩阻力为主要来源的层间抗剪强度,其随弯拉疲劳衰减的速率明显小于以层间粘结力为主要来源的界面。In order to evaluate the impact of interlayer interface on the structural performance of bridge deck pavement, the high temperature performance and the change of shearing strength during the flexural fatigue are studied on the base of wheel tracking test and shearing test after flexural fatigue of combined specimens for different interfaces. Through analyzing the test results, the rutting depth of one hour later, dynamic stability and shearing strength of different flexural fatigue times for different interface combined specimens are obtained. The results show that textures of interface between layers have a significant impact on the high temperature performance of paving layer and the attenuation of shearing strength for interlayer. When the rex tures are more rich, the interface based on micro-texture mainly is conducive to the spread of load stress, and it can reduces the stress of paving pavement, so it improves anti-deformation capacity indirectly. The shearing strength, which is the major source of friction between two layers, will have a lower decay rate than those reliance on major interlayer bonding force. 8 tabs, 1 fig, 8 refs.

关 键 词：道路工程 混凝土桥面铺装 层间界面 高温性能 剪切 

分 类 号：U416.216[交通运输工程—道路与铁道工程] U443.33[建筑科学—桥梁与隧道工程]