湖南大学学报（自然科学版）2016，Vol.43Issue(9)：113-119,7.
层间接触状态对桥面铺装结构力学响应的影响
Effcet of Interlayer Contact State on Mechanical Response of Bridge Deck Pavement Structure
摘要
Abstract
To solve the problem of insufficient consideration of interlayer contact state between leveling course and asphalt pavement,a new interlayer contact factor was adopted in this paper.Based on the semi-contacted bi-layer beam mechanical model,a calculation formula was derived,and the bending test on a bi-layer beam was designed to determine the interlayer contact factors under different concrete surface treat-ments and spraying volume of modified asphalt condition.Meanwhile,the mechanical responses were ana-lyzed by using the analysis software ANSYS under different interlayer contact states.The results show that the interlayer contact state under artificial chiseling treatment is the best,and the maximum value of the interlayer contact factor is 0.607.The stress state of the asphalt pavement structure in the continuous layer contact state is obviously worse than that of the complete continuous contact condition.Taking the shear stress of asphalt pavement under cutting groove measure as an example,the maximum stresses in XY and YZ directions are 0.412 MPa and 0.421 MPa,while the stresses are 0.195MPa and 0.222 MPa under the complete continuous contact condition,and the former are larger than the latter by 1 1 1% and 9 1%,re-spectively.It shows that the complete continuous contact condition is not reasonable in the design of deck pavement structure.Compared with the fully continuous state,the stress state of asphalt pavement is ob-viously deteriorated,which indicates that the layer of the pavement layer and the layer of the asphalt over-lay can be enhanced when the pavement is laid.关键词
公路建设/桥面铺装/部分连续式双层梁/层间接触系数/力学响应Key words
road construction/bridge deck pavement/semi-contacted bi-layer beam/interlayer contact factor/mechanical response分类
交通工程引用本文复制引用
万晨光,申爱琴,薛翠真,赵学颖..层间接触状态对桥面铺装结构力学响应的影响[J].湖南大学学报（自然科学版）,2016,43(9):113-119,7.基金项目
国家自然科学基金资助项目（51278059），National Natural Science Foundation of China （）
