LRB lead rubber bearing construction method

LRB lead rubber bearing construction method

Construction preparation

Check that the LRB lead rubber bearing specs, model, and quantity meet the design needs. Also, look for any defects, such as damage or deformation, in their appearance.

• Gather tools and equipment for installation. This includes a crane, jack, wrench, and level gauge.

• Clean the top surface of the bridge pier and abutment. Make sure it is flat, clean, and free of oil stains and debris.

LRB lead rubber bearing installation

Use the crane to lift the LRB lead rubber beam. Set it on the top surface of the pier and abutment with care. While hoisting, the operator must keep the load stable. This helps avoid collisions with the pier and other objects.

The team needs to change the position and height of the LRB lead rubber beam. This makes sure the center aligns with the design position. It also ensures the top height meets the design standards. You can use jacks, spirit levels, and other tools for adjustments.

Adjust the position and height of the LRB lead rubber beam. Use connecting bolts to secure it tightly to the top surface of the pier and abutment. Tighten the bolts to secure them in a uniform and proportional manner. This keeps stress balanced on the LRB lead rubber beam.

1. Put the lower and upper connecting plates together. Then, add the LRB lead rubber beam and upper embedded parts to the ground.

2. Next, coat them with grease. Use grease and felt as an insulation layer for future replacements.

3. Lift it in place according to the LRB lead rubber beam layout plan.

4. Fasten the lower connecting plate securely to the embedded parts using high-strength bolts.

Installation quality inspection

Verify the correct installation of the LRB lead rubber beam by someone. Also, look for any damage or deformation on its surface.

• Check if the connecting bolts are tight.

• Ensure the gaskets are complete.

• Use a level to measure the top elevation of the LRB lead rubber beam.

• Confirm it meets the design requirements.

In case of any deviation, someone must adjust it in time. Use the total station to measure the center of the LRB lead rubber beam. Check if it matches the design position. Someone must adjust any deviation.

Follow-up work

When you install the LRB lead rubber beam, protect it from collisions and pollution. You can use barriers around it or cover it with protective materials.