Haichen supplies spherical bearings for bridge spherical bearings, spherical steel bearings, and grid spherical bearings

Description :

　　Ball joint support is a product that gradually sublimates on the basis of spherical support. They can meet the performance requirements of node supports for bridges, buildings, especially steel structure engineering. Ball joint bearings are divided into three forms: fixed type, one-way displacement type, and two-way displacement type. Ball joint support is a horizontal position support. During operation, the top plate displacement box and the bottom plate displacement box are placed horizontally. Its function is to hinge the upper and lower components and release the internal stress of the steel structure body.

　　1、 The main technical performance of the support:

　　1. Capable of withstanding vertical loads;

　　2. Has considerable resistance to vertical pulling force, ensuring that the upper and lower structures do not detach when subjected to vertical pulling, and can rotate normally;

　　3. Capable of resisting horizontal shear forces, ensuring that it does not detach when subjected to horizontal forces;

　　4. Can meet the requirements of horizontal displacement;

　　5. Can meet universal rotation and universal bearing requirements;

　　6. The material of the support is alloy cast steel, which meets the service life of the project.

　　2、 Design Basis:

　　1. Architectural Design Code: GB50017-2003 "Code for Design of Steel Structures";

　　2. Traffic standard: JTGD62-2004 "Design Specification for Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts";

　　3. Architectural Design Code: GB5001-2001 "Code for Seismic Design of Buildings".

　　3、 Support design parameters:

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

　　2. The vertical pull-out resistance of the support shall be within 50% of its vertical load;

　　3. The horizontal shear resistance of the support is taken as 30% to 40% of the vertical load;

　　4. The design angle is 0.02 rad, and corresponding designs can also be made within the range of 0.02~0.08 rad according to the actual situation;

　　5. Displacement type supports can be designed with corresponding displacement values ranging from ± 60 to ± 100 depending on their displacement form, or according to actual needs;

　　6. The sliding friction coefficient of the support u ≤ 0.03 (-25 ° C~+60 ° C)

　　4、 Precautions to be taken when selecting ball joint bearings:

　　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.

AfterSalesService :

• Spherical support structure