Passenger-dedicated Railway line spherical bearing (KJSB)

Technical performance

1. There are nine levels of vertical bearing capacity: 2500KN，3000KN, 3500KN, 4000KN, 4500KN, 5000KN, 5500KN, 6000KN, 7000KN.

2. Design horizontal main force:

The design horizontal force of the fixed bearing, the longitudinal movable bearing in the transverse bridge direction, and the transverse movable bearing along the bridge direction is 15% of the vertical design bearing capacity of the bearings.

The design horizontal force of the two way movable bearing in all directions, along the bridge direction of the longitudinal movable bearing and in the transverse direction of the transverse movable bearing is 5% of the vertical design bearing capacity.

3. Design displacement of bearing:

The design displacement along the bridge direction of bidirectional movable bearing and longitudinal movable bearing is:

● Design Vertical Bearing Capacity ：2500KN～3000KN, the design displacement： ±50mm

● Design Vertical Bearing Capacity ：3500KN～7000KN, the design displacement： ± 60mm.

4. Structures

KJSB-FIXED

KJSB-Longitudinal

KJSB-Multidirectional

KJSB-Transverse

5. Design friction coefficient of movable bearing:

● -50℃--25℃: 0.05

● -25℃～+60℃: 0.03

6. Applicable range of temperature: -50℃ ～+60℃

7. When the slope of the project line is 0-20 ‰, The top surface wedge angle of upper support plate is changed to meet the slope requirements of the beam.

● When the slope of the project line is 0‰<i<4‰, no wedge angle is set of the upper support plate.

● When the project slope is 4‰<i<12‰, the slope of top surface of upper bridge bearing plate is preset to be 8 ‰ slope.

● When the slope is 12‰<i<20‰, The top surface wedge angle of upper support plate is preset to be 16 ‰.

When the slope of the project is greater than 20 ‰, Instead of setting wedge angle on the top surface of upper support plate, adjust the slope at the bottom of the beam.

There is no slope on the top of the bearing plate on the cast-in-place simply supported beam bearing, and the slope of the project is adjusted by the beam bottom.

8. Bridge Bearing Design Angel: 0.02rad.

9. Reserved height adjustment of bearing: 0～+20mm.