桥梁橡胶支座的功能是承受梁体重量,并把所受之力传给墩台,同时也要适应梁体位移及转角的需要。目前,我国铁路桥梁中采用的支座是铸钢支座,这种支座体积大、用钢量大、加工困难、成本高。另一方面,随着桥梁跨度的增加,支座受力也急剧增加,同 The function of the bridge rubber bearing is to bear the weight of the beam body, and to pass the force to the piers and abutments, but also to adapt to the needs of beam displacement and corner. At present, the support used in railway bridges in our country is cast steel bearing, which is large in volume, large in steel volume, difficult in machining and high in cost. On the other hand, as the span of the bridge increases, the bearing force also increases sharply