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Spherical steel bearing for highway bridge girder - GQZ series

Spherical steel bearing for highway bridge girder - GQZ series

  • Category:Bridge bearing series
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  • Release time:2023-02-22 10:10:35
  • Content

1、 Overview

GQZ series spherical bearings for highway bridges are designed by CCCC Highway Planning and Design Institute Co., Ltd. and are applicable to spherical bearings with bearing capacity of 1000kN~60000 kN.

2、 Technical requirements

1. Classification

Spherical bearings have the function of bearing the rated vertical load and being able to rotate in all directions. They are generally classified according to their horizontal displacement characteristics:

a) Two-way movable bearing: with two-way displacement performance, not bearing the role of horizontal load, code SX;

b) One-way movable bearing: with one-way displacement performance, bearing the function of one-way horizontal load, code DX;

c) Fixed support: bear the action of horizontal load in all directions, without horizontal displacement in all directions, code GD.

2. Under the action of the vertical design bearing capacity, the vertical compression deformation of the support shall not be greater than 1% of the total height of the support, and the radial deformation of the basin ring shall not be greater than 0.5 ‰ of the outer diameter of the basin ring.

3. The horizontal bearing capacity of fixed bearing and one-way movable bearing in non-slip direction shall not be less than 10% of the vertical design bearing capacity.

4. The applicable temperature range of the support is - 40 ℃~60 ℃.

5. Under the vertical design load, when 5201 silicone grease is added between the spherical crown liner plate, stainless steel plate and polytetrafluoroethylene plate, and the temperature range is - 25 ℃~60 ℃, the design friction coefficient is 0.03; When the temperature range is - 40 ℃~- 25 ℃, the design friction coefficient is 0.05.


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Address: 

Fengnan Coastal Industrial Zone, Tangshan, Hebei

Address: 

No. 37, Chaoyang Street, Fengnan District, Tangshan, Hebei

Email: 

fnhywqg@163.com

Sales Department Tel and Fax: 

0315-8168868

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