水泥混凝土路面桥头搭板的应力分析

THE STRESS ANALYSES OF THE CONCRET PAVEMENT PLATES LINKING WITH BRIDGE ENDS

本文以悬空板和Winkler地基板的组合模型作为桥头搭板下部支承产生局部脱空以后的力学模型,用初参数法得出了载荷作用于搭板不同部位时板中的应力分布规律,并对脱空范围以及搭板纵向尺度的影响进行了分析。数据比较表明,文中的理论推导是正确的,数值结果是可信的。本文的数值计算是在PC—1500袖珍计算机上实现的,计算程序简明,便于和现有路面设计的计算机程序配套使用,易于工程设计部门推广应用。

In this paper, the composite model consisting of an unsupported plate anda winkler plate is taken as the mechanical model of partly suspended pavementplates linking with bridge ends. The stresses in pavement plates are calculatedby use of initial parameter method when loads act at different places onpavement plates. And the influences of suspended area size and length of thepavement plates are discussed. The numerical contrast shows that the theoreticalanalyses are correct and the numerical results are reliable in this paper. Allnumerical results are obtained in the PC-1500 pocket computer. The Computerprogram is simple and convinient to form a complete set with presentedpavement design program. So it could be extended in engineering designdepartments.