新型抗横移桥梁板式橡胶支座

A New Type of Bridge Plate Rubber Support Resistant to Lateral Displacement

桥梁板式橡胶支座具有诸多优点 ,但对于提速线路桥梁 ,此类支座横向位移过大 ,对行车构成安全隐患。采用一种新材料和新概念 ,较好地解决了在大幅度提高支座横向抗剪刚度的同时 ,仍保留抗压和纵向抗剪刚度较低的有利特性。对所研制的新型抗横移板式橡胶支座 ,经静力性能测试和模拟列车运行动力作用的疲劳考核 ,证明能达到预期目标 ,而且外形尺寸相同 。

Bridge plate rubber support has many advantages. However, its lateral displacement is considerable for bridges on highspeed railways, which is a hidden danger in train driving. In this paper, a new material and a new concept are used, thus the compression stiffness and longitudinal shear stiffness can keep fairly low while the lateral shear stiffness increases greatly. The static force performance test and the fatigue examination which simulates the motive force of the running train prove that the capability of resisting lateral displacements of the developed new type bridge plate rubber support is able to achieve the desired objectives. Moreover, because of the same formal sizes, the new rubber supports are convenient to be replaced in the railway reconstruction for higher speed.