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连续式桥梁伸缩缝界面黏结性能研究

DOI: 10.3969/j.issn.1674-0696.2014.01.03, PP. 12-16

Keywords: 道路工程,伸缩缝界面,有限元,李占结性能,roadengineering,expansionjointsinterface,finiteelement,bondingperformance

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Abstract:

:?通过有限元计算,分析了连续式桥梁伸缩缝界面在交通荷载及温度收缩变形作用下的受力特征;探讨了连续式桥梁伸缩缝界面脱开原因;研究了伸缩缝材料模量、铺装厚度、宽度和界面接触条件对界面秸结性能的影响。结果表明:当温度收缩变形比较大时,界面温度拉应力比界面荷载剪应力对界面教结状态影响大;当温度收缩变形比较小时,界面温度拉应力比界面荷载剪应力对界面秸结状态影响小;适当地增加伸缩缝材料的模量和宽度,减小铺装厚度和界面摩擦系数可以相应提高伸缩缝界面的蒙古结性能。

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