Seismic steel ball bearing is compared to other types of bearings, the steel consumption and volume are greatly reduced, relatively low manufacturing costs, have universal rotation, universal carrying other advantages. Special structure tensile, shear, and has the ability to be resistant to seismic intensity of 9 degrees. In order to reduce construction costs and improve the overall quality of engineering and earthquake disaster reduction ability to create extremely favorable conditions for the promotion of great value in the span space structures and bridge engineering in today's booming abroad. 3, the performance level of the force with anti ensure horizontal earthquake; one can carry vertical load; 2, with anti-vertical tension performance guarantee and down vertical seismic structure is not out of line: Seismic Isolation Spherical Bearings main technical performance structure is not out of line; 4, can be adapted to the radial and circumferential displacement requirements; 5, can be adapted to the requirements of the corner in any direction; 6, damping bearings with good damping properties; 7, through the spherical bearing force transmission, not necking phenomenon occurs force acting on the reaction force under the structure of relatively uniform; 8, not rubber bearings under pressure, the impact of aging on rubber bearings do not exist, and long service life. Seismic parameters of a Spherical Bearings, bearing vertical bearing capacity into 300KN, 500KN, 1000KN, 1500KN, 2000KN, 2500KN, 3000KN, 4000KN, 5000KN, 6000KN, 7000KN, 8000KN, 9000KN, 10000KN fourteen levels; 2, Anti-bearing horizontal force of 20% vertical bearing capacity; 3, steel bearing anti-vertical tension: GKQZ type, GJQZ anti vertical pull the vertical bearing capacity of 20%; GKGZ type, GJGZ anti vertical pull the vertical bearing capacity of 30%; 4, the design angle is 0.08rad (can be designed according to user requirements) 5, the radial displacement of the steel bearing ± 20mm- ± 50mm, the displacement of the ring ± 60mm - ± 100mm; 6, the coefficient of sliding friction bearing steel μ≤0.03 (-25 ℃ - + 60 ℃); 7, bearing rotational friction coefficient μ = 0.05-0.1 (GKQZ type, GJQZ type) μ≤0.03 (GKGZ type, matters GJGZ type) seismic spherical bearing selection should pay attention to: 1, should pay attention to the size of the bearing capacity of bearing selection, size vertical tension size, horizontal force, and pay attention to the amount of displacement and rotation, for shock absorption Also note that the level of bearing elastic stiffness. 2, should be chosen bearing note bearing types, namely two-way activity type, one-way activity, stationary. 3. Constraints gave direction to the displacement of the bearing damping and stiffness, damping the need for the project. Related Comments 

keywords: Spherical bearings, ball bearings earthquake, earthquake-way ball bearing,