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Seismic basin bearing of Highway Bridge

GPZ (KZ) GB fixed seismic basin type rubber bearing is mainly composed of upper seat plate, energy dissipation steel plate, sealing ring, rubber plate, bottom basin and damping rubber ring& nbsp; GPZ(KZ) & nbsp; DX unidirectional movable basin type rubber bearing also has intermediate steel plate, PTFE slide plate, stainless steel slide plate and lateral sliding device. The damping principle is that when the horizontal force of the bearing is greater than 20% of the design vertical bearing capacity of the bearing, the energy dissipation plate starts to slide, which plays the first isolation effect, and then the damping rubber ring plays the second damping effect, and the bearing plays an anti-seismic role. When the seismic shock wave exceeds a certain limit, the rigid seismic of the modified series has the third seismic effect.
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Product description

(1) Structural form

GPZ (KZ) GB fixed seismic basin type rubber bearing is mainly composed of upper seat plate, energy dissipation steel plate, sealing ring, rubber plate, bottom basin and damping rubber ring& nbsp; GPZ(KZ) & nbsp; DX unidirectional movable basin type rubber bearing also has intermediate steel plate, PTFE slide plate, stainless steel slide plate and lateral sliding device. The damping principle is that when the horizontal force of the bearing is greater than 20% of the design vertical bearing capacity of the bearing, the energy dissipation plate starts to slide, which plays the first isolation effect, and then the damping rubber ring plays the second damping effect, and the bearing plays an anti-seismic role. When the seismic shock wave exceeds a certain limit, the rigid seismic of the modified series has the third seismic effect.

 

(2) Bearing performance

1. Vertical design bearing capacity

The design bearing capacity of this series of bearings is divided into 31 grades, namely 0.8, 1.25, 1.5, 2, 2.5, 3, 3.5, 4, 5, 6, 7, 8, 9, 10, 12.5, 15, 17.5, 20, 22.5, 25, 27.5, 30, 32.5, 35, 37.5, 40, 45, 50, 55 and 60Mn. The design bearing capacity of the bearing is allowed to be overloaded by 10%.

2. Horizontal bearing capacity

The horizontal bearing capacity of fixed bearing in all horizontal directions and non sliding direction of one-way movable bearing can bear 20% of the designed bearing capacity.

3. Friction coefficient

Under the lubrication of silicone grease, the minimum design friction coefficient of normal temperature bearing (- 25 ℃ ~ + 60 ℃) μ= 0.03。 Minimum value of design friction coefficient of cold resistant bearing (- 40 ℃ ~ + 60 ℃) μ= 0.06。

4. Bearing turning

The allowable bearing angle is 0.02rad.

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