GPZ(II)4SXmm Pot Bearing Processing Bridge Bearings Contact Me for Ordering

JPZ (II) Pot Bearing Product Introduction and Construction Guide

JPZ (II) pot bearings are a type of high-performance bearing commonly used in bridges, buildings, and other engineering projects. As a second-generation improved product, they offer enhanced load-bearing capacity, displacement adaptability, and durability. Suitable for long-span bridges and heavy-load structures, they effectively transfer loads and accommodate structural deformations.

1. Product Features

• High Load-Bearing Capacity: Made from high-strength steel and high-quality rubber composite materials, capable of withstanding significant vertical and horizontal loads.
• Multi-Directional Displacement Adaptation:
  • Fixed Type (GD): Allows rotation only, GPZ(II)4SXmm Pot Bearing Processing Bridge Bearings Contact Me for Ordering restricts horizontal and vertical displacement.
  • Unidirectional Activity Type (DX): Permits horizontal movement in one direction (longitudinal or transverse).
  • Bidirectional Activity Type (SX): Allows free horizontal movement in both directions.
• Strong Durability: Utilizes multi-layer rubber sealing rings, stainless steel sliding plates, and anti-corrosion coatings to extend service life.
• Excellent Seismic Performance: Optimized design accommodates large displacement demands during earthquakes.
• Standardized Installation: Designed in compliance with the **GB/T 17955 "Bridge Pot Bearings"** standard, facilitating construction adjustments.

2. Applicable Engineering Scope

• Highway Bridges (box girders, T-beams, continuous beams, etc.)
• Railway Bridges (high-speed railways, heavy-haul railways)
• Urban Viaducts and Interchanges
• Long-Span Building Structures (stadiums, exhibition centers, etc.)
• Special Engineering Projects (hydropower stations, nuclear power plants, etc.)

3. Construction and Installation Guide

(1) Pre-Construction Preparation

1. Bearing Selection: Choose the appropriate model (GD/DX/SX) based on design load, displacement (horizontal, rotational), GPZ(II)4SXmm Pot Bearing Processing Bridge Bearings Contact Me for Ordering and seismic requirements.
2. Inspect the Bearing: Ensure no deformation or cracks; keep sliding surfaces clean and free of impurities.
3. Measurement and Layout: Accurately mark the installation position of the bearing, ensuring elevation and levelness meet design requirements.

(2) Installation Steps

• Fixed Bearing (GD Type)

  1. Embedded Steel Plate Installation: Pre-embed the lower steel plate of the bearing on the pier or abutment, ensuring flatness.
  2. Bearing Placement: Hoist the bearing to the design position and adjust for levelness and elevation.
  3. Grouting Fixation: Use high-strength non-shrink grouting material to fill the bottom of the bearing, ensuring compactness.

• Movable Bearing (DX/SX Type)

  1. Install Lower Plate: Pre-embed and level the lower plate, ensuring correct sliding direction.
  2. Place Bearing Main Body: Hoist the bearing, ensure the sliding surface is clean, and apply lubricating silicone grease.
  3. Install Upper Plate: Weld or bolt connect to the pre-embedded steel plate at the beam bottom, ensuring levelness.

(3) Construction Quality Control

• Horizontal Deviation ≤ 1mm
• Elevation Error ≤ 2mm
• Sliding Surface Clean and Uncontaminated, ensuring free sliding
• Grouting Compactness, no voids

(4) Post-Installation Inspection

• Check if the bearing is in close contact with the beam and pier/abutment.
• Perform simulated load tests (if necessary) to verify bearing performance.
• Regularly inspect bearing displacement and rubber aging during long-term use.

4. Maintenance and Care

• Regular Inspection (every 3~5 years): Observe rubber sealing rings, sliding surface wear, and corrosion.
• Cleaning and Lubrication: Remove dust and debris; replenish silicone grease lubricant.
• Abnormality Handling: If restricted displacement, abnormal noise, or deformation is detected, repair or replace promptly.