GJZ 400×550×99 Rectangular Plate-Type Bridge Rubber Bearing

GJZ 400×550×99 Rectangular Plate-Type Bridge Rubber Bearing

I. Rectangular (Circular) Plate Rubber Bearings

(1) Performance: Possesses sufficient vertical stiffness to withstand vertical loads, excellent elasticity to accommodate beam end rotation, and significant shear deformation to meet the horizontal displacement of the superstructure.

(2) Features: This product is widely used in bridge construction, hydropower engineering, and building seismic facilities. GJZ 400×550×99 Rectangular Plate-Type Bridge Rubber Bearing offers advantages such as simple structure, easy installation, steel savings, low cost, simple maintenance, and easy replacement compared to traditional steel bearings. It also has a low construction height, benefiting bridge design and cost reduction. Additionally, it provides excellent seismic isolation, reducing the impact of live loads and seismic forces on structures.

II. Polytetrafluoroethylene (PTFE) Sliding Plate Rubber Bearings

(1) Features: This product is made by bonding a 1.5-3mm thick polytetrafluoroethylene plate to an ordinary plate rubber bearing. GJZ 400×550×99 Rectangular Plate-Type Bridge Rubber Bearing retains the vertical stiffness and elastic deformation of ordinary plate rubber bearings, enabling it to withstand vertical loads and accommodate beam end rotation. The low friction coefficient (μ≤0.03) between the PTFE and the stainless steel plate at the beam bottom allows unlimited horizontal displacement of the bridge superstructure.

Plate rubber bearings are commonly used in small and medium-sized highway bridges. They are categorized into ordinary plate rubber bearings and PTFE plate rubber bearings. Ordinary bridge bearings are suitable for bridges with spans less than 30m and small displacement. Different planar shapes suit different bridge structures: rectangular bearings for orthogonal bridges, and circular bearings for curved bridges, skew bridges, and cylindrical pier bridges.

PTFE plate rubber bearings are suitable for bridges with large displacements, such as long-span, multi-span continuous, and simply supported continuous plate structures. They can also serve as sliding blocks in the incremental launching of continuous beams and the transverse movement of T-beams. The applications of rectangular and circular PTFE plate rubber bearings are the same as those of ordinary rectangular and circular plate rubber bearings, respectively.