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装配式钢筋混凝土空心板桥使用橡胶支座是比较普遍的。目前一般认为,橡胶支座对于跨中荷载横向分布影响很小,可以略去不计。而对于支点荷载横向分布的影响则颇大。文献考虑了橡胶支座对于装配式板桥横向分布的影响,提出了支点荷载横向分布影响线和支座反力影响线的计算方法。但该文需求解高阶矩阵,计算比较繁杂。笔者在学习了文献之后,认为可利用文献中的表格直接计算以上两种影响线,简化计算过程,便于实际应用。图1横向为五块空心板,每块板设置两块橡胶支座。将橡胶支座视为弹性支承,铰接力和支承反力如图2所示。
The use of rubber bearings for prefabricated reinforced concrete hollow slabs is more common. It is generally believed that the impact of rubber bearings on the horizontal distribution of cross-load is small, can be ignored. The impact on the horizontal distribution of the fulcrum load is quite large. The literature considers the influence of rubber bearings on the transverse distribution of fabricated slab bridges and proposes a calculation method of the influence lines of lateral load distribution and the influence lines of bearing reaction force. However, this paper needs to solve the higher-order matrix and the calculation is complicated. After studying the literature, the author thinks that the above two kinds of influence lines can be directly calculated by using the tables in the literature to simplify the calculation process and be convenient for practical application. Figure 1 horizontal five hollow plates, each plate set two rubber bearings. The rubber bearing is regarded as the elastic support, the hinge force and the bearing reaction force are shown in FIG. 2.