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近些年来,对于斜交梁式桥上部结构的内力分析国内外都进行了相当广泛的研究,不论是用差分法对微分方程和边界条件进行求解,还是用有限元法求解,或是采用折减系数的实用近似计算法,都是以理想的刚性支承边界条件为前提的,实际上中小跨度的钢筋混凝土斜梁桥很多采用橡胶支座,由于橡胶支座的弹性下沉,会对斜桥的内力带来影响,分析这种影响的特性及其数值的大小,对斜桥的设计具有现实意义。
In recent years, there have been a lot of studies both at home and abroad on the analysis of internal forces of the superstructure of skewed beam bridges. Whether it is solving differential equations and boundary conditions by difference method, solving finite element method or using reduction coefficient Practical approximation method are based on the ideal rigid support boundary conditions as a prerequisite, in fact, many of the small and medium-span reinforced concrete inclined beam bridge with rubber bearings, due to the elastic rubber bearing sinking, the internal force of the inclined bridge Bring about the influence, analyze the characteristic of this kind of influence and the magnitude of its value, have realistic meanings to the design of the inclined bridge.