[1] Chen Xiaobing, Xu Libin, Luo Ruilin, Liu Han, et al. Influence of longitudinal slope on the mechanical responseof steel deck pavement [J]. Journal of Southeast University (English Edition), 2018, 34 (1): 71-77. [doi:10.3969/j.issn.1003-7985.2018.01.011]
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Influence of longitudinal slope on the mechanical responseof steel deck pavement(
)
纵坡对钢桥面铺装层力学响应的影响
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 34
- Issue:
- 2018 1
- Page:
- 71-77
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2018-03-20
Info
- Title:
- Influence of longitudinal slope on the mechanical responseof steel deck pavement
- 纵坡对钢桥面铺装层力学响应的影响
- Author(s):
- Chen Xiaobing, Xu Libin, Luo Ruilin, Liu Han
- School of Transportation, Southeast University, Nanjing 210096, China
- Keywords:
- longitudinal slope; steel deck pavement; stress; critical load position; time-temperature equivalence; finite element method
- PACS:
- U443.33
- DOI:
- 10.3969/j.issn.1003-7985.2018.01.011
- Abstract:
- In order to study the influence of longitudinal slope on the mechanical response of steel deck pavement, a method of slope-modulus transformation was proposed for the mechanical analysis of the steel deck pavement based on the time-temperature equivalence principle. Considering the mechanical action on a slope, a finite element model of the deck pavement was established to determine the critical load position of tensile and shear stress of the steel deck pavement. Additionally, the influence of longitudinal slope on the mechanical response of the deck pavement under the conditions of uniform speed and emergency braking was analyzed. The results indicate that the maximum transverse tensile stress at the pavement surface and the maximum transverse shear stress at the pavement bottom are always greater than their longitudinal counterparts under uniform speed. Under emergency braking, however, the critical slope gradient of the maximum transverse and longitudinal tensile stress at the pavement surface is 6%. The maximum longitudinal shear stress at the pavement bottom is always greater than the maximum transverse shear stress. This study is helpful in the structural design of large longitudinal slope steel deck pavements.
- 为了研究纵坡对钢桥面铺装层力学响应的影响, 运用时温等效原理进行钢桥面铺装层力学分析中坡度-模量转换.考虑纵坡上车辆荷载对铺装层力学作用, 建立钢桥面铺装层力学模型分析车辆荷载作用下铺装层纵横向拉应力和剪应力临界荷位, 得到了匀速行驶和紧急制动2种状态下铺装层力学响应随纵坡坡度的变化规律.结果表明:匀速行驶时铺装层表面最大横向拉应力始终大于表面最大纵向拉应力;层底最大横向剪应力始终大于层底最大纵向剪应力.紧急制动时铺装层表面最大纵横向拉应力临界纵坡为6%, 铺装层层底最大纵向剪应力始终大于最大横向剪应力.分析结果为大纵坡钢桥面铺装层设计提供了理论基础.
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Memo
- Memo:
-
Biography: Chen Xiaobing(1973—), male, doctor, associate professor, xbchen@seu.edu.cn.
Foundation item: The National Science Foundation of China(No. 51778142).
Citation: Chen Xiaobing, Xu Libin, Luo Ruilin, et al.Influence of longitudinal slope on the mechanical response of steel deck pavement[J].Journal of Southeast University(English Edition), 2018, 34(1):71-77.DOI:10.3969/j.issn.1003-7985.2018.01.011.