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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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移动荷载作用下公路隧道水泥路面结构力学分析
, PP. 22-25
Keywords: 道路工程,三维有限元,水泥混凝土路面,移动荷载,动载系数
Abstract:
建立了公路隧道水泥混凝土路面结构的三维有限元分析模型,运用桥梁工程中影响线求法中移动布载方式模拟车辆荷载在路面上真实的运动情况。讨论了不同荷载速度、不同基层模量和基岩模量对轴载移动到板中时板顶最大竖向位移和板底最大拉应力的影响。通过比较动态荷载与静止荷载作用下板底拉应力值和板顶竖向位移值得出,对于公路隧道基岩强度比较大的情况,板底应力动载系数近似为0.5,路表弯沉动载系数近似为1.0。
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