桥梁板式支座厂家报价
橡胶支座的正确就位先使支座和支承垫石按设计要求准确就位。架梁落梁时,T型梁的纵轴线要与支座中心线重合;板梁、箱梁的纵轴线与支座中心线相平行。为落梁准确,在架**跨板梁或箱梁时,可在梁底划好二个支座的十字位置中心,在梁的端立面上标出两个支座的位置中心线的铅直线,落梁时使之与墩台上的位置中心线相重合。以后数跨可依照**跨梁为基准进行。在架梁落梁时要平稳,防止压偏或产生初始剪切变形,大家可以参考铁路桥梁板式橡胶支座规格表 。在安装T型桥梁时,若橡胶支座比梁筋底宽,则应在支座与梁筋底之间加设比支座大的钢筋混凝土垫块或厚钢板做过渡层,以免支座局 部受压,而形成应力集中。钢筋砼垫块或厚钢板要用环氧树脂砂浆和梁筋底贴合粘结。落梁后,一般情况下橡胶支座**面与梁面保持水平。预应力简支梁,其支座**面可稍后倾;非预应力梁其支座**面可略微前倾,但倾斜角度不得**过5".
板式橡胶支座的分类及表示方法
1、 根据桥梁板式橡胶支座的结构型式分类如下:
球冠圆板式橡胶支座(TCYB系列)
普通板式橡胶支座--- 矩形普通板式橡胶支座(GJZ系列)
圆形普通板式橡胶支座(GYZ系列)
板式橡胶支座
圆形四氟板式橡胶支座(GYZF4系列)
聚四氟乙烯板式橡胶支座--- 矩形四氟板式橡胶支座(GJZF4系列)
球冠四氟板式橡胶支座(TCYBF4系列)
2、 板式橡胶支座按胶种适用温度分类如下:
a、氯丁橡胶: 适用温度+60℃∽-25℃
b、天然橡胶: 适用温度+60℃∽-40℃
c、三元乙丙橡胶: 适用温度+60℃∽-45℃
三、板式橡胶支座的适用范围
1、普通板式橡胶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.
2、四氟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**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.
目前常见的几种支座类型主要有盆式橡胶支座、球形支座和板式橡胶支座。
At present, several types of support are commonly used, such as basin rubber bearings, spherical bearings and plate rubber bearings.
其中盆式橡胶支座与球形橡胶支座具有承重能力大,转动灵活的特点,适宜于大跨径桥梁的使用;
Among them, the basin rubber bearing and the spherical rubber bearing have the characteristics of large bearing capacity and flexible rotation, which is suitable for the use of long-span bridges;
板式橡胶支座是由多层天然橡胶与薄钢板镶嵌、粘合、硫合而成的一种桥梁支座产品,适用于跨度相对较小,位移量较小的桥梁,且具有构造简单、价格低廉、无须养护、易于更换的特点。
The plate rubber bearing is a bridge bearing product made of multi-layer natural rubber and thin steel plate inlaid, bonded and sulphur. It is suitable for bridges with relatively small span and small displacement, and has a simple structure and price. Low cost, no need for maintenance and easy replacement.
而由于经济等原因,且目前我国桥梁结构形式主要以简支梁和连续梁桥占主导地位。
Due to economic reasons, and at present, China's bridge structure is dominated by simply supported beams and continuous beam bridges.
由此,板式橡胶支座在目前我国桥梁工程中的应用相比前两种类型支座而言更为广泛。
Therefore, the application of the plate rubber bearing in the current bridge engineering in China is more extensive than the first two types of bearings.
按照交通部的新标准,板式橡胶支座结构形式分为:普通板式橡胶支座,四氟板式橡胶支座。两种结构板式橡胶支座均有矩形和圆形之分。
According to the new standard of the Ministry of Communications, the structural form of the plate rubber bearing is divided into: ordinary plate rubber bearing and PTFE plate rubber bearing. Both structural plate rubber bearings are available in rectangular and circular shapes.