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移动荷载下爬坡路段沥青路面力学响应特性

Keywords: 沥青路面,爬坡路段,移动荷载,力学指标

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Abstract:

以解放CA141为代表车型,分析了车辆在驶入爬坡路段后的4种可能行为,根据其动力性能参数计算出上坡时加减速换挡的加速度,据此建立了移动荷载下三维沥青路面瞬态动力学分析有限元模型,对不同行驶工况下路面内的压应力、剪应力及竖向位移特性进行分析。计算结果表明在移动荷载作用下,路面结构的应力响应不仅具有波动特性,同时在一定区域内呈现交变特性,出现了拉压应力逆转变化,压应力分布主要集中在路表0~6cm范围内;由于速度的降低及水平力的增大,路表处最大剪应力由轮隙向轮心处迁移,沿道路深度方向,最大剪应力峰值由中面层位置向路表迁移;车辆的变速及低速行驶是引起爬坡路段车辙变形的主要原因。

References

[1]  CAO Yan-mei, XIA He, LOMBAERT G. Solution of moving-load-induced soil vibrations based on the Betti-Rayleigh Dynamic Reciprocal Theorem[J]. Soil Dynamics and Earthquake Engineering, 2010, 30(6): 470-480.
[2]  CAI Yuan-qiang, CAO Zhi-gang, SUN Hong-lei, et al. Dynamic response of pavements on poroelastic half-space soil medium to a moving traffic load[J]. Computers and Geotechnics, 2009, 36(1/2): 52-60.
[3]  THEODORAKOPOULOS D D, CHASSIAKOS A P, BESKOS D E. Dynamic effects of moving load on a poroelastic soil medium by an approximate method[J]. International Journal of Solids and Structures, 2004, 41(7): 1801-1822.
[4]  XU Bin, LU Jian-fei, WANG Jian-hua. Dynamic response of an infinite beam overlying a layered poroelastic half-space to moving loads[J]. Journal of Sound and Vibration, 2007, 306(1/2): 91-110
[5]  JIANG Jian-qun, ZHOU Hua-fei, ZHANG Tu-qiao. Steady state response of infinite plate on visco-elastic foundation subjected to moving load[J]. China Journal of Highway and Transport, 2006, 19(1): 6-11.(in Chinese)
[6]  ZHONG Yang, ZHOU Fu-lin, ZHANG Yong-shan. Dynamic response to a plate on elastic foundation under moving load with varying velocity[J]. Journal of Vibration and Shock, 2008, 27(1): 61-64.(in Chinese)
[7]  YAN Wei-hong, MENG Feng-lin, DONG Zhong-hong. Study on the shearing strain of the semi-rigid base asphalt pavement under moving load[J]. Journal of Zhengzhou University: Engineering Science, 2010, 31(2): 46-51.(in Chinese)
[8]  DONG Zhong-hong, LU Peng-min. Dynamic response of inverse structure asphalt pavement under moving load[J]. Journal of Chang’an University: Natural Science Edition, 2008, 28(5): 111-115.(in Chinese)
[9]  WANG Bin, YANG Jun. Effects of vehicle dynamic loading on CRCP by 3D finite element method[J]. Journal of Southeast University: Natural Science Edition, 2008, 38(5): 850-855.(in Chinese)
[10]  DONG Ze-jiao, CAO Li-ping, TAN Yi-qiu, et al. Analysis of the dynamic response of three directional strains in asphalt pavement under moving vehicle loads[J]. China Civil Engin-eering Journal, 2009, 42(4): 133-139.(in Chinese)
[11]  HOU Yun, GUO Zhong-yin, TIAN Bo, et al. Dynamic deflection response of layered pavement structure subjected to dynamic load[J]. China Journal of Highway and Transport, 2002, 15(3): 6-10.(in Chinese)
[12]  YANG Shao-wei, SHI Fei-rong, MU Hui, et al. Shifting regu1ation of predicting vehicle speed[J]. Journal of Chang’an University: Natural Science Edition, 2004, 24(2): 34-36.(in Chinese)
[13]  LIU Chang-sheng. Research on adhesion coefficient of automobile tire and road surface[J]. Highway, 2006(5): 159-163. (in Chinese)

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