Main technical properties of steel structure supports:
1. Can bear vertical loads.
2. Possesses the property of resistance to vertical tensile forces, ensuring that the upper and lower structures do not disengage during vertical seismic events.
3. Possesses anti-horizontal force performance, ensuring the structure does not disengage during horizontal earthquakes.
4. Adaptable to radial and circumferential displacement requirements.
5. Suitable for corners in any direction.
6. The shock-absorbing support has excellent vibration-damping properties.
7. The bracket transmits force through a spherical surface, avoiding the phenomenon of force necking, resulting in a relatively uniform reactive force on both the upper and lower structures.
8. The bracket does not use rubber to bear pressure, eliminating the impact of rubber aging on the bracket, resulting in a long service life.
Steel structure bearing, grid bearing, seismic spherical steel bearing
Steel structure supports (also known as grid supports) are divided into four types: GKQZ type seismic steel ball supports, GJQZ type damping steel ball supports, GKGZ type seismic spherical steel supports, and GJGZ type damping spherical steel supports. Each type of support is further categorized into three modes: bidirectional movement, unidirectional movement, and fixed.
I. Main Technical Performance of Steel Structure Support:
1. Can withstand vertical loads.
2. Features vertical tensile resistance, ensuring the upper and lower structures do not disconnect during vertical earthquakes.
3. Features resistance to horizontal forces, ensuring the structure does not detach during horizontal earthquakes.
4. Adaptable to radial and circumferential displacement requirements.
5. Adaptable to corner requirements in any direction.
6. The shock-absorbing bracket has excellent shock absorption performance.
7. The bracket transmits force through a spherical mechanism, eliminating the phenomenon of force constriction, and the reactive forces acting on the upper and lower structures are relatively uniform.
8. The bracket does not use rubber for bearing pressure, eliminating the impact of rubber aging on the bracket, ensuring a long service life.
Section II: Support Technical Parameters
1. The vertical bearing capacity of the supports is divided into fourteen levels: 300KN, 500KN, 1000KN, 1500KN, 2000KN, 2500KN, 3000KN, 4000KN, 5000KN, 6000KN, 7000KN, 8000KN, 9000KN, and 10000KN.
2. The bearing capacity against horizontal force of the support is 20% of the vertical load-bearing capacity.
3. Vertical tensile resistance of the support bracket:
The GKQZ and GJQZ models have a vertical tensile resistance of 20% of the vertical bearing capacity.
The GKGZ and GJGZ models have a vertical tensile resistance of 30% of their vertical bearing capacity.
4. The design corner is 0.08 rad (can be designed separately according to customer requirements)
5. Radial displacement of the bracket ±20mm to ±50mm, circumferential displacement ±60mm to ±100mm.
6. Support sliding friction coefficient μ ≤ 0.03 (-25℃ to +60℃)
7. Pivot friction coefficient μ = 0.05-0.1 (GKQZ type, GJQZ type)
μ ≤ 0.03 (GKGZ, GJGZ models)
Section 3: Points to Consider When Selecting Steel Structural Supports:
1. When selecting a bracket, pay attention to the load-bearing capacity, vertical tensile force, horizontal force, and displacement and rotation angles. For vibration-isolation brackets, also consider the horizontal elastic stiffness.
2. When selecting brackets, pay attention to the type of bracket, namely, bidirectional movable, unidirectional movable, and fixed type.
3. All constraint directions of the shock-absorbing bracket are provided with displacement and stiffness, catering to the needs of engineering vibration reduction.
