GPZ (KZ) Series Basin Type Rubber Seismic Bridge Bearings

GPZ (KZ) series Basin type rubber seismic bridge bearings

The rigid-flexible seismic measures adopted for the basin-type bridge bearings increase the energy dissipation capacity of the bearing and greatly improve the seismic performance of the bearing. Therefore, the earthquake resistance of the bridge can be improved when an earthquake occurs. Limit the relative displacement between the upper and lower structures of the bridge to the greatest extent, and reduce the amplification factor of the seismic force. It is equivalent to the use of ordinary basin-type rubber bearings during non-earthquake

Since the GPZ (KZ) series anti-vibration basin rubber bearings are designed with fixed bearings and unidirectional movable bearings, if the two types of bearings are used together, it is better for the whole bridge structure to be equipped with seismic bearings only on the fixed pier of the bridge. Earthquake resistance is the best

1. Anti-seismic, good anti-seismic effect, often used in various bridge construction.

2. Friction coefficient: One-way movable anti-vibration bearing, under silicone grease lubrication, the minimum value of the designed friction coefficient of the normal temperature bearing (-25°C ~ +60°C) is μ=0.03, and the cold-resistant bearing (-40°C ~ +60℃) The minimum value of design friction coefficient is μ=0.06.

3. Rotation angle: The rotation angle of the bearing of this series is 0.02rad

4. Displacement of displacement unidirectional movable anti-seismic bearing, transverse bridge direction is ± 3mm.

5. After adding 5201 silicone grease, the design friction coefficient of the movable support is 0.03 at normal temperature, and 0.06 when cold.

6. Brass sealing ring is used inside, which is more wear-resistant than low alloy steel ring and has better sealing performance. 7. The anchoring method of sleeve and bolt is adopted, which is easier to install and maintain.

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