Manufacturer of GPZ(KZ) 2DX±50 Seismic Basin-Type Bridge Bearings

GPZ(KZ) 2DX±50 Seismic Pot Bearing for Bridges Manufacturer

The GPZ(KZ) series seismic pot rubber bearings include two types: fixed bearings and unidirectional movable bearings, along with bidirectional movable bearings for配套 use. The bearing specifications are divided into 31 grades according to JT391-1999 requirements. The vertical design bearing capacity, bearing rotation angle, bearing friction coefficient, and displacement are all designed in accordance with standard requirements. Only the horizontal force in all directions of the fixed bearings and the non-sliding direction of the unidirectional movable bearings has been increased from 10% to 20% of the original bearing design capacity.
Currently, both rigid seismic resistance and flexible shock absorption methods are adopted domestically and internationally. GPZ(KZ) 2DX±50 Seismic Pot Bearing for Bridges Manufacturer, Rigid seismic resistance requires increasing the size of the structure (including the foundation structure and seismic bearing structure). The characteristics of flexible shock absorption are: good shock absorption performance but relatively small stiffness, with the possibility of damage under strong seismic waves. This series of bearings adopts effective seismic measures such as a combination of rigidity and flexibility, increasing the energy dissipation capacity of the bearings and greatly improving their seismic performance.GPZ(KZ) 2DX±50 Seismic Pot Bearing for Bridges Manufacturer, Therefore, during an earthquake, it can enhance the bridge's seismic resistance,最大限度地 limit the relative displacement between the upper and lower structures of the bridge, and reduce the amplification factor of seismic forces. When there is no earthquake, it functions等同 to general pot rubber bearings.

Since the GPZ(KZ) series seismic pot rubber bearings are designed with fixed bearings and unidirectional movable bearings, the combined use of these two types of bearings compared to installing seismic bearings only on the fixed piers of the bridge undoubtedly improves the seismic resistance of the entire bridge structure.
Structural form of GPZ(KZ) pot rubber bearings: GPZ(KZ)GD (Fixed Seismic Pot Rubber Bearing), mainly GPZ(KZ) 2DX±50 Seismic Pot Bearing for Bridges Manufacturercomposed of an upper seat plate, energy dissipation plate, sealing ring, rubber plate, pot base, and damping rubber ring, etc. GPZ(KZ)DX (Unidirectional Movable Seismic Pot Rubber Bearing) also includes an intermediate steel plate, PTFE sliding plate, stainless steel sliding plate, and lateral sliding device, etc. The shock absorption principle is mainly that when the horizontal force on the bearing exceeds 20% of the design vertical bearing capacity, the energy dissipation plate begins to slide, providing the first isolation effect; then the damping ring发挥 the second damping effect, and the bearing serves its seismic role; when the seismic shock wave exceeds a certain limit, the rigid seismic resistance of this series provides the third seismic effect.