The bearing comprises a fixed support (code GD), one-way bearings (codenamed DX), bidirectional support (codenamed SX) three types, 22 grades, bearing capacity, the level of the overall strength of vertical pulling force and bearing are better than ordinary bearing has greatly improved. The series of supports adopt elastic damping elements. When the horizontal force is large enough, the damping spring begins to deform elastically to achieve the buffering effect. When the corner of the structure occurs, the ball core rotates and releases the torque generated by the superstructure. When the earthquake, the rigid and flexible measures to reduce seismic measures happen at the same time, in order to resist the earthquake input energy is huge, so as to ensure the bridge, reasonable structure displacement amplification coefficient decreases with the force of the earthquake, and the structure of unity. The support can withstand 8-11 degree earthquake, and has good anti-seismic and vibration reduction effect on the engineering structure in high intensity earthquake area, especially in the straight earthquake zone.
Main technical performance of steel structure support
1. Can bear vertical load;
2. It has the capability of resisting vertical tensile force, and ensures that the upper and lower structures are not disjointed when vertical earthquake occurs;
3, with horizontal resistance performance, to ensure that the structure of horizontal earthquake does not fall off;
4. It can meet the requirements of radial and circumferential displacement;
5. It can meet the requirement of turning in any direction;
6. The shock absorbing bearing has good shock absorption performance;
7, the support through the spherical transmission, no force necking phenomenon, the role of the upper and lower structure of the reaction force is relatively uniform;
8, the bearing does not use rubber pressure, there is no rubber aging impact on the bearing, long service life.
Technical parameters of steel structure support
1, the vertical bearing capacity of the bearing is divided into 300KN, 500KN, 1000KN, 1500KN, 2000KN, 2500KN, 3000KN, 4000KN, 5000KN, 6000KN, 7000KN, 8000KN, 9000KN, 10000KN fourteen levels
2. The horizontal resistance of the bearing is 20% of the vertical bearing capacity
3, support vertical tensile resistance: GKQZ and GJQZ type vertical tensile resistance for the vertical bearing capacity of 20%; type GKGZ and GJGZ type vertical tensile force is 30% of the vertical bearing capacity
4, the design angle is 0.08rad (can be designed according to user requirements)
5, the radial displacement of the support is + 20mm- + 50mm, the displacement of the ring is + 60mm- + 100mm;
6, bearing sliding friction coefficient is less than 0.03 (-25 -+60 OC);
7, bearing rotating friction coefficient of =0.05-0.1 (GKQZ and GJQZ) was less than 0.03 (GKGZ and GJGZ)
Characteristics of steel structure support
The earthquake resistant steel ball bearing can rotate, universal universal bearing, can satisfy the various loads of upper structure generated by the force transmission, rotating and moving requirements, to ensure that anti force concentrated and clear, safe and reliable.
The earthquake resistant steel ball bearing can withstand tension, compression and shear (transverse) force in the random seismic force huge, as long as the upper and lower structure is not destroyed, will not happen, fall off the beam frame and other disastrous consequences, which is especially suitable for the area with high seismic intensity have the ability to fortify, 9 degrees of anti earthquake intensity.
(3) the static stiffness of the seismic spherical steel bearing is large. Under the action of large dead weight and inertia force of the train and large vehicle, the bearing only produces minimal deformation, which can ensure the smoothness of the vehicle and train at high speed.