Chinese name: Grid Support
Secondary classification: bidirectional activity, unidirectional activity, and fixed type
First level classification: divided into four types
Technical performance: capable of bearing vertical loads
Brand: Henghai Rubber
Suggested retail price: 20
Technical performance: capable of bearing vertical loads
Brand: Henghai Rubber
Suggested retail price: 20
Grid supports (also known as steel structure supports) are divided into four types: GKQZ seismic steel ball supports, GJQZ seismic steel ball supports, GKGZ seismic steel ball supports, and GJGZ seismic steel ball supports.
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 areas, especially in direct earthquake areas.
Main technical performance of steel structure bearings
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.
Scope of application of steel structure bearings
Seismic ball 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.
