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梁式桥上部结构与桥墩之间的连接使用橡胶板以代替传统的刚性构造支座,近年来在公路桥方面已有广泛的发展。由于橡胶板在承受水平变位之后产生剪切阻力的物理特性,改变了以往梁桥上、下部结构在水平纵向之间的分离关系,成为弹性的联结。这种弹性联结使相邻桥孔互为影响。在桥的纵向,任何一处的作用力,将由于水平位移的传递而分配至全桥各墩。不言而喻,这一效应将随着桥梁下部结构的愈益柔性而显著。正是这种全桥成为整体以承受纵向力的条件,降低了单个桥墩的抗弯需要,使基础的结构尺寸及规模得以缩小,从而使桥墩可以按具有一定的抗弯能力的柔性支杆去进行设计。这种对桥梁下部结构在承受纵向力方面的有利影响,无疑将获得经济上的效益。
Beam bridge The connection between the superstructure and the pier uses rubber plates instead of the traditional rigid structural supports. In recent years, there have been extensive developments in highway bridges. Due to the physical properties of the rubber plates that produce shear resistance after being subjected to horizontal displacement, the separation between the horizontal and vertical structures of the upper and lower substructures of the bridge has been changed to become a flexible coupling. This flexible coupling makes adjacent bridge holes influence each other. In the longitudinal direction of the bridge, the force at any point will be distributed to the piers of the bridge due to the transfer of horizontal displacement. It goes without saying that this effect will be significant as the substructure of the bridge becomes more flexible. It is this kind of full bridge which is a condition to bear the longitudinal force as a whole and reduce the bending resistance of a single piers so that the size and size of the foundation can be reduced so that the piers can be flexed according to certain flexibility Design. This beneficial effect on the substructure of the bridge against longitudinal forces will undoubtedly have economic benefits.