[1] Chen XiaobingHuang XiaomingDing JianmingTong Jinhu,. Deflection and stress of hollow CRCP slabunder concentrated vehicle load [J]. Journal of Southeast University (English Edition), 2011, 27 (2): 213-216. [doi:10.3969/j.issn.1003-7985.2011.02.021]
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Deflection and stress of hollow CRCP slabunder concentrated vehicle load(
)
车辆集中荷载作用下脱空CRCP板的挠度与应力
)Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]
- Volumn:
- 27
- Issue:
- 2011 2
- Page:
- 213-216
- Research Field:
- Traffic and Transportation Engineering
- Publishing date:
- 2011-06-30
Info
- Title:
- Deflection and stress of hollow CRCP slabunder concentrated vehicle load
- 车辆集中荷载作用下脱空CRCP板的挠度与应力
- Author(s):
- Chen XiaobingHuang XiaomingDing JianmingTong Jinhu
- School of Transportation, Southeast University, Nanjing 210096, China
- Keywords:
- concentrated vehicle load; equivalence principle; half-wave sine load; elastic thin plates; hollow continuously reinforced concrete pavement slab; deflection and stress formulae; slab thickness
- PACS:
- U416.216.2
- DOI:
- 10.3969/j.issn.1003-7985.2011.02.021
- Abstract:
- Based on the equivalence principle of deflection and stress, the concentrated vehicle load which acts on the center of continuously reinforced concrete pavement(CRCP)is translated into the equivalent half-wave sine load by the Fourier transform. On the basis of this transform and the small deflection theory of elastic thin plates, the deflection and stress formulae of CRCP under the concentrated vehicle load with a hollow foundation are put forward. The sensitivity of parameters is analyzed. The results show that maximum deflection is directly proportional to the concentrated vehicle load and the slab width, and inversely proportional to the lateral bending stiffness and slab thickness. The effects of slab width and thickness are significant with regard to maximum deflection. Maximum stress is directly proportional to the concentrated vehicle load and the slab width as well as inversely proportional to slab thickness. The effect of slab thickness is significant with regard to maximum stress. According to the calculation results, the most effective measure to reduce maximum deflection and stress is to increase slab thickness.
- 基于挠度与应力等效原则, 将作用于连续配筋混凝土路面(CRCP)中央的车辆集中荷载通过傅里叶级数展开为等效的半波正弦荷载.在荷载转换和小挠度弹性薄板理论的基础上, 提出了车辆集中荷载作用下脱空地基上CRCP的挠度和应力计算公式, 分析了参数的敏感性.结果表明:板的最大挠度与车辆集中荷载、板的宽度成正比, 与板的横向弯曲刚度、板的厚度成反比, 其中板的宽度与厚度影响显著.板的最大应力与车辆集中荷载、板的宽度成正比, 与板的厚度成反比, 其中板的厚度影响显著.根据计算结果, 降低最大挠度和应力最有效的方法是增加板的厚度.
References:
[1] Deng Xuejun, Huang Xiaoming. Principles and design methods of pavement [M]. Beijing: China Communications Press, 2007.(in Chinese)
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Memo
- Memo:
-
Biographies: Chen Xiaobing(1973—), male, graduate, associate professor, xbchen@seu. edu. cn; Huang Xiaoming(corresponding author), male, doctor, professor, huangxm@seu.edu.cn.
Foundation item: The Science Foundation of Ministry of Transport of the People’s Republic of China(No.200731822301-7).
Citation: Chen Xiaobing, Huang Xiaoming, Ding Jianming, et al.Deflection and stress of hollow CRCP slab under concentrated vehicle load[J].Journal of Southeast University(English Edition), 2011, 27(2):213-216.[doi:10.3969/j.issn.1003-7985.2011.02.021]