Hebei Haichen Wholesale GPZ Spherical Sliding Bearing Grid Seismic Sliding Bearing Finished Seismic Spherical Bearing Directional Ball Joint Steel Bearing Price

Description :

　　Types of supports

　　Steel structure truss support

　　This support includes three types: fixed support (code GD), one-way support (code DX), and two-way support (code SX), with 22 grades. Its horizontal bearing capacity, vertical pulling force, and overall strength of the support are significantly improved compared to ordinary supports. This series of supports uses elastic damping elements. When the horizontal force reaches a certain level, the damping spring begins to undergo elastic deformation to achieve buffering effect. When the structure rotates, the ball core rotates, releasing the torque generated by the upper structure. During an earthquake, both rigid seismic measures and flexible vibration reduction measures act simultaneously to resist the enormous seismic input energy. This ensures reasonable relative displacement between the upper and lower structures of the bridge, reduces the amplification factor of seismic forces, and maintains structural unity. This support can withstand earthquakes of 8-11 degrees and has good seismic and vibration reduction effects on engineering structures in high-intensity earthquake zones, especially in direct earthquake zones.

　　Main technical performance of steel structure grid support

　　1. Capable of withstanding vertical loads;

　　2. Has the ability to resist vertical tension, ensuring that the upper and lower structures do not detach during vertical earthquakes;

　　3. Has the ability to resist horizontal forces, ensuring that the structure does not detach during horizontal earthquakes;

　　4. Can adapt to radial and circumferential displacement requirements;

　　5. Can adapt to any direction of turning requirements;

　　6. The shock absorber support has good shock absorption performance;

　　7. The support transmits force through the spherical surface without force necking, and the reaction force acting on the upper and lower structures is relatively uniform;

　　8. The bearing does not require rubber pressure, and there is no impact of rubber aging on the bearing, resulting in a long service life.

　　Technical parameters of steel structure grid support

　　1. The vertical bearing capacity of the support is divided into 300 KN、500KN、1000KN、1500KN、2000KN、2500KN、3000KN、4000KN、5000KN、6000KN、7000KN、8000KN、9000KN、10000KN Fourteen levels

　　2. The horizontal resistance of the support is 20% of the vertical bearing capacity

　　3. Vertical tensile strength of supports: GKQZ and GJQZ types have a vertical tensile strength of 20% of their vertical bearing capacity; The vertical tensile strength of GKGZ and GJGZ types is 30% of the vertical bearing capacity

　　4. Design corner of 0.08rad (can be customized according to user requirements)

　　5. The radial displacement of the support is ± 20mm - ± 50mm, and the circumferential displacement is ± 60mm - ± 100mm;

　　6. The sliding friction coefficient of the support is μ ≤ 0.03 (-25 ℃ -+60 ℃);

　　7. Friction coefficient of support rotation μ=0.05-0.1 (GKQZ type, GJQZ type) μ ≤ 0.03 (GKGZ type, GJGZ type)

　　Characteristics of Steel Structure Grid Support

　　① Seismic ball steel bearings can rotate and bear in a universal manner, which can well meet the requirements of transmitting, rotating, and moving the reaction forces generated by various loads on the upper structure, ensuring that the reaction forces are concentrated, clear, safe, and reliable.

　　② Seismic spherical steel bearings can withstand tensile, compressive, and shear (lateral) forces. Under the action of huge random seismic forces, as long as the upper and lower structures themselves are not damaged, catastrophic consequences such as beam and frame falling will not occur. Therefore, they are particularly suitable for fortification in high-intensity earthquake zones and have the ability to withstand seismic intensity of 9 degrees.

　　③ The static stiffness of seismic spherical steel bearings is high. Under the huge weight and inertia force of trains and large vehicles, the bearings only produce minimal deformation, which can reliably ensure the smoothness of high-speed operation of vehicles and trains.

　　④ Seismic ball shaped steel bearings transmit force through spherical surfaces, with a large load-bearing area and optimized combinations of multiple materials. Their volume and height are greatly reduced, they are lightweight, easy to install, and have a lower cost compared to steel bearings with the same load-bearing capacity.

　　⑤ Seismic ball steel bearings have a wide temperature range (-40 ℃~+70 ℃), good durability, and do not use rubber compression. There is no impact of rubber aging on the rotational performance of the bearings.

　　Scope of Application for Steel Structure Grid Support

　　Seismic spherical steel bearings are suitable for wide bridges, curved bridges, cable-stayed bridges, ramp bridges, large-span spatial structures and other engineering projects, especially in high-intensity earthquake zones.

　　Precautions to be taken when selecting steel structure supports

　　1. When selecting bearings, attention should be paid to the size of the bearing capacity, vertical tension, horizontal force, displacement and rotation angle. For shock absorber bearings, attention should also be paid to the horizontal elastic stiffness.

　　2. When selecting bearings, attention should be paid to the type of bearings, namely bidirectional movable type, unidirectional movable type, and fixed type.

　　3. The constraint direction of the shock absorber support is given displacement and stiffness for the purpose of engineering shock absorption.

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