摘要
建立了移动荷载作用下,弹性半空间地基上四边弹性支撑有限板的一种新型力学模型,并以单位力作用下的简支矩形板为基本系统,通过简化约束,利用互等功定理及变分法原理,求解出了在移动荷载作用下该矩形板的解析解。根据机场工程中实测的道面板弯沉值,利用此解析解反算出了板边弹性支撑的刚度系数。通过该方法就可以确定刚性道面板间的接缝传荷能力,从而使道面板的设计更加经济合理。
In this paper, a new mechanical model is presented, this model depicts that the four joints of the rectangular plates＇ edges in the airport＇s rigid pavement are considered as elastic boundary supports. By choosing a basic system that has four simple supported edges and that is loaded with a unit force and by simplifying the edges of the real system, the author concludes the analytical solution of the rectangular plate with four elastic boundary supports on elastic foundations subjected to the moving point-load by Betti＇s reciprocal theorem of work. According to the flexible data of engineering, this paper deduces the rigid modulus of elastic boundary supports, so the transfer load capacity of the joints of the rectangular plates can be ascertained.
出处
《中南公路工程》
2006年第4期106-109,共4页
Central South Highway Engineering
关键词
弹性半空间
互等功定理
弹性支撑
elastic half-space
Betti＇ s reciprocal theorem of work
elastic boundary supports
