基于力学响应分析的钢桥面铺装结构与材料一体化研究
DOI:
作者:
作者单位:

1.安徽省引江济淮集团有限公司;2.山东省交通科学研究院

作者简介:

通讯作者:

中图分类号:

U418.8

基金项目:

国家重点研发计划项目(18YFB1600103); 引江济淮工程科技创新项目(YJJH-ZT-ZX-20220708485)。


Research on the Integration of Steel Bridge Deck Pavement Structure and Materials Based on Mechanical Response Analysis
Author:
Affiliation:

Anhui Provincial Group Limited for Yangtze-to-Huaihe Water Diversion

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为解决钢桥面铺装耐久性不足问题,以两种双层沥青玛蹄脂混合料(SMA)铺装结构为研究对象,采用有限元分析方法确定典型桥面板最不利荷载位置,计算对比两种结构在该荷载位置下的力学响应,优选钢桥面铺装结构组合并提出设计指标要求;其次,室内制备A、B两种高黏高弹改性沥青,以沥青胶结料及混合料路用性能为考察标准,对比分析胶结料类型对钢桥面铺装沥青混合料路用性能的影响规律,优选沥青胶结料类型;最后,借助室内拉拔及斜剪试验,对铺装层与钢板之间的层间粘结状况进行评价,并结合实体工程对最不利温度条件下铺筑层的粘结性能进行检验。结果表明:跨中位置为钢桥面的最不利荷位,应以铺装层在该位置的拉应力、竖向位移及层底剪应力作为钢桥面铺装的主要设计指标;所设计的两种铺装结构力学响应规律一致,其中,结构2(SMA-13+SMA-10+沥青胶砂)的竖向位移及层底剪应力较小,宜作为优选结构;A、B高黏高弹改性沥青的路用性能较SBS(苯乙烯-丁二烯-苯乙烯三嵌段共聚物)改性沥青优势显著,又以A高黏高弹改性沥青性能最优,用其制备的混合料路用性能最为优异;拉拔试验测试结果表明,25℃及60℃温度条件下铺装层-钢板间粘结强度均满足设计要求,工程应用地区铺装结构层内温度呈周期变化规律,最高温度未超60℃,以该温度层间粘结强度作为设计指标科学合理,同时不利温度下实体工程各结构层间粘结强度均满足设计要求。

    Abstract:

    To solve the issue of insufficient durability for steel bridge deck pavement, two types of double-layer stone mastic asphalt (SMA) pavement structures were used as research objects in this study. Firstly, the most unfavorable loading position of the typical bridge deck was determined through the finite element analysis method; and the mechanical response of the above two structures at this loading position was calculated, thus the optimal structural combination for steel bridge deck pavement and its design index requirements were proposed. Secondly, two types of high viscosity and elasticity modified asphalt (A and B) were prepared; and then, taken the road performance of asphalt binders and their mixtures as the evaluation criteria, effects of asphalt binder’s types on the road performance of steel bridge deck pavement asphalt mixtures were compared, thus the asphalt binder with the best properties was selected. Finally, the bonding performance between the pavement layer and the steel plate was evaluated by using the indoor pull-out and oblique shear tests. Meanwhile, the bonding performance of the pavement layer under the most unfavorable temperature conditions was tested with the actual engineering. Test results show that the middle position is the most unfavorable load position on the steel bridge deck. Therefore, the tensile stress, vertical displacement, and bottom shear stress of the pavement layer at this location can be selected as the main design indicators for steel bridge deck pavement. In addition, the two designed pavement structures exhibit the consistent mechanical response patterns, among which the vertical displacement and layer bottom shear stress of structure 2 (SMA-13+SMA-10+asphalt mortar) are relatively smaller. As for the asphalt binders, comparing with SBS (Styrene Butadiene Styrene Triblock Copolymer) modified asphalt, the prepared high viscosity and elasticity modified asphalt (A and B) have the better road properties, among which the road property of A modified asphalt is the best. The pull-out test results show that, under the temperature conditions of 25℃ and 60℃, the bonding strength between the pavement layer and the steel plate can all meet the design requirements. The actual engineering test result show that temperature inside the pavement structure layer exhibits the periodic variation pattern, with the highest temperature not exceeding 60℃. Therefore, the design index based on the interlayer bonding strength at this temperature is scientific and reasonable, and meanwhile, the interlayer bonding strength of various structural layers in the actual engineering meets the design requirements under this unfavorable temperatures.

    参考文献
    相似文献
    引证文献
引用本文

李东旭,江照伟,彭建,等. 基于力学响应分析的钢桥面铺装结构与材料一体化研究[J]. 科学技术与工程, , ():

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2023-12-14
  • 最后修改日期:2024-07-05
  • 录用日期:2024-07-09
  • 在线发布日期:
  • 出版日期:
×
亟待确认版面费归属稿件,敬请作者关注
《科学技术与工程》入选维普《中文科技期刊数据库》自然科学类期刊月度下载排行榜TOP10