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120000KN Rotation Spherical Hinge Product Introduction and Installation Guide

1. Introduction to 120000KN Rotation Spherical Hinge

The 120000KN (approximately 12,000-ton class) rotation spherical hinge is a specialized device for large-tonnage bridge rotation construction, suitable for rotation construction projects such as long-span bridges, railway interchanges, and overpass bridges. It features high load-bearing capacity, smooth rotation, and precise positioning.

Key Features:

• Ultra-High Load-Bearing Capacity: Designed vertical load capacity up to 120000KN (12,000 tons), suitable for long-span bridge rotation construction.
• Low Friction Coefficient: Utilizes high-strength alloy steel + polytetrafluoroethylene (PTFE) sliding plates, with a friction coefficient ≤0.03, ensuring smooth rotation.
• High-Precision Control: Equipped with hydraulic jacks + intelligent control system, enabling millimeter-level precise rotation positioning.
• Modular Design: Typically composed of upper spherical hinge, lower spherical hinge, sliding layer, locking device, etc., facilitating transportation and installation.
• Seismic Performance: Some models feature seismic buffering functions, suitable for earthquake-prone areas.

Applicable Standards:

• GB/T 17955-2009 "Spherical Bearings for Bridges"
• JT/T 873-2013 "Spherical Bearings for Highway Bridges"
• TB/T 3320-2013 "Spherical Bearings for Railway Bridges"

2. Installation Steps for 120000KN Rotation Spherical Hinge

(1) Pre-Installation Preparation

• Foundation Inspection:

• Check the concrete strength of the pier or rotation foundation (≥C50), with flatness error ≤1mm/m2.

• Ensure the position and elevation of pre-embedded anchor bolts meet design requirements.

  • Equipment Inspection:

• Ensure spherical hinge components are free from deformation and rust, and PTFE sliding plates are free from scratches.

  • Hydraulic rotation system (jacks, pump station, control system) must be debugged and functioning normally.
  • Measurement and Positioning:

• Use a total station for precise layout to ensure the spherical hinge center aligns with the bridge rotation center.

  (2) Spherical Hinge Installation

1. Lower Spherical Hinge Installation:

• Hoist the lower spherical hinge onto the foundation's pre-embedded plate and adjust for level (levelness ≤0.02%).

• Secure anchor bolts with high-strength grouting material and cure until design strength is achieved.

  2. Sliding Layer Installation:

• Evenly apply silicone grease lubricant on the surface of the lower spherical hinge and lay the PTFE sliding plates.

  3. Upper Spherical Hinge Installation:

• Hoist the upper spherical hinge and align it with the lower spherical hinge to ensure close contact between surfaces.

  • Temporarily secure with steel wedges to prevent displacement.

  4. Rotation System Connection: