江西耐寒型板式橡胶支座厂家
耐寒型板式橡胶支座由多层橡胶片与薄钢板硫化、粘合而成，它有足够的竖向刚度，能将上部构造的反力可靠的传递给墩台，有良好的弹性，以适应梁端的转动；又有较大的剪切变形能力，以满上部构造的水平位移。
板式橡胶支座按形状划分：矩形板式,圆形,球冠圆板式,圆板坡形等几种系列.板式橡胶支座一种由多层天然橡胶与薄钢板镶嵌,粘合,硫化而成一种桥梁橡胶支座产品。该种类型的桥梁板式支座有足够的竖向刚度以承受垂直荷载,且能将上部构造的压力可靠地传递给墩台；有良好的弹性以适应梁端的转动；有较大的剪切变形以满足上部构造的水平位移；具有构造简单,安装方便,节省钢材,价格低廉,养护简便,易于更换等特点。如果将板式橡胶支座表面粘复一层1.5mm-3mm厚的聚四氟乙烯板,就能制作成聚四氟乙烯滑板式橡胶支座它除了竖向钢度与弹性变形,能承受垂直荷载及适应梁端转动外,因聚四氟乙烯板的低摩擦系数,可使梁端在四氟板表面自由滑动,水平位移不受限制,特别适宜中,小荷载,大位移量的桥梁使用。
板式橡胶支座是公路、铁路中不型桥梁中比较常用的产品，它分为普通板式橡胶支座、四氟板式橡胶支座。对于普通型桥梁支座适用于跨度小于30m、位移量较小的桥梁.不同的平面形状适用于不同的桥跨结构,正交桥梁用矩形支座;曲线桥、斜交桥及圆柱墩桥用圆形支座.对于四氟乙烯板式橡胶支座适用于大跨度、多跨连续、简支梁连续板等结构的大位移量桥梁.它还可用作连续梁顶推及T型梁横移中的滑块.矩形、圆形四氟板式橡胶支座的应用非别与矩形、圆形普通板式橡胶支座相同.
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