盆式橡胶支座 GPZ(Ⅱ)盆式支座是钢构件与橡胶组合而成的新型桥梁支座,与同类的其它型号盆式支座和铸钢辊轴支座相比,具有承载能力大、水平位移量大、转动灵活等特点,且重量轻,结构紧凑,构造简单,建筑高度低,加工制造方便,节省钢材,降低造价等优点,是适宜于大垮桥梁使用的较理想的支座。本系列支座目前承载力为31个级别,承载力0.8MN-60MN,能满足大型桥梁建造的需要。
Basin type rubber bearing GPZ (II) pot bearing steel is a new bridge and a combination of rubber bearing, and other similar types of basin type compared with the bearings and bearing cast steel roll shaft, high bearing capacity, displacement, rotation and flexible, light weight, compact structure, simple structure. Low building height, convenient manufacture, steel saving, low cost and other advantages, is suitable for large span bridge using the ideal support. The bearing capacity of this series of bearings is 31 grades, and the bearing capacity is 0.8MN-60MN, which can meet the needs of large bridge construction.
本标准系列中,固定支座在各方向和单向活动支座非滑移方向的水平承载力均不小于支座坚向承载力的10%。抗震型支座水平承载力不小于支座坚向承载力的20%。 支座转动角度不小于0.02rad. 加5201硅脂润滑后,常温型活动支座设计摩阻系数最小取0.03.
In the standard series, the horizontal bearing capacity of the fixed bearing in the non slip direction of each direction and the one-way movable support is not less than 10% of the bearing capacity of the bearing. The seismic bearing horizontal bearing capacity is not less than 20% of the bearing capacity. Bearing rotation angle is not less than 0.02rad. 5201 grease lubrication, normal temperature type movable bearing design minimum friction coefficient 0.03.
加5201硅脂润滑后,耐寒型活动支座设计摩阻系数最小取0.06。
Add 5201 grease lubrication, cold type movable bearing design friction coefficient minimum 0.06.
盆式橡胶支座安装注意事项
Points for attention of installation of basin type rubber bearing
1、建议在墩、台顶面设置支座垫石。
1, it is recommended to set the cushion stone on the top of pier and abutment.
2、盆式支座安装前应拆箱作全面检查及进行清洁。除去油污,特别是不锈钢与填充聚四氟乙烯板的相对滑移面应用丙酮或酒精仔细擦洗干净,支座其它各件也应擦洗干净,支座内不得涂刷防锈油。
2, pot bearing before installation should make comprehensive inspection and cleaning operations. Remove the oil, especially stainless steel and filled PTFE plate relative sliding surface with acetone or alcohol carefully scrub clean, bearing other parts should also be scrubbed clean, bearing shall not paint Antirust oil.
3、支座除标高必须符合设计要求外,为确保支座的使用性能,须保证三个方向的平面水平。
3, the bearing except elevation must comply with the design requirements, in order to ensure the use performance of the bearing, must ensure the plane level of three directions.
4、支座上、下各部件纵横向必须对中,或由于安装时温度与设计温度不同,支座纵向上下各部件错开的距离必须与计算值相等。
4, the upper and lower parts of the bearing must be vertical or horizontal, or because the installation temperature and design temperature are different, the bearing longitudinal up and down parts of the staggered distance must be equal to the calculated value.
5、支座中心线与主梁中心线应重合或保持平行。
5. The center line of the bearing should be coincident with or kept parallel with the main beam center line.
6、连续桥梁实行体系转换时,必须在支座和硫磺水泥浆块之间采取隔热措施,以免损坏填充四氟乙烯板和橡胶块。
6, the implementation of continuous bridge system transformation, we must take measures between the support and the sulfur cement mortar block, so as not to damage the tetrafuoroethylene plate and rubber block.
通常在布置盆式橡胶支座时需要考虑以下的基本原则:
Usually, the following basic principles should be considered when setting a basin rubber bearing:
(1)上部结构是空间结构时,支座应能同时适应桥梁顺桥向(X方向)和横桥向(Y方向)的变形;
(1) when the superstructure is a spatial structure, the support should be able to adapt to the deformation of the bridge in the direction of the bridge (X direction) and the direction of the transverse direction (Y direction);
(2)支座必须能可靠的传递垂直和水平反力;
(2) supports must be able to transmit vertical and horizontal forces reliably;
(3)支座应使由于梁体变形所产生的纵向位移、横向位移和纵、恒向转角应尽可能不受约束;
(3) the longitudinal displacement, lateral displacement and longitudinal and constant rotation angle due to the beam deformation should be restrained as far as possible;
(4)铁路桥梁通常必须在每联梁体上设置一个固定支座;
(4) a fixed support must be set on each beam in the railway bridge;
(5)当桥梁位于坡道上,固定支座一般应设在下坡方向的桥台上;
(5) when the bridge is located on the ramp, the fixed support should be located on the abutment in the downhill direction;
(6)当桥梁位于平坡上,固定支座宜设在主要行车方向的前端桥台上;
(6) when the bridge is located on the flat slope, the fixed support should be located on the front abutment of the main driving direction;
(7)固定支座宜设置在具有较大支座反力的地方;
(7) the fixed bearing should be located in the place where the counterforce is greater;
(8)在同一桥墩上的几个支座应具有相近的转动刚度;
(8) several supports on the same pier should have similar rotational rigidity;
(9)连续梁可能发生支座沉陷时,应考虑制作高度调整的可能性。
(9) the possibility of height adjustment should be taken into account when the bearing of the continuous beam may occur.
总之,盆式橡胶支座的布置原则是既要便于传递支座反力,又要使支座能充分适应梁体的自由变形。
In a word, the layout principle of the basin type rubber bearing is that it is easy to transfer the support reaction force, and the bearing can fully adapt to the free deformation of the beam.