Construction technical scheme of HDR high damping rubber bearing

Construction technical scheme of HDR high damping rubber bearing

Installation Preparation:

• Prepare the HDR high-damping rubber beam technical scheme.

• Familiarize yourself with construction drawings and specifications.

• Join the drawing review process.

• Provide vibration isolation training for project construction personnel.

Store the HDR high-piling rubber beam and its plates on-site until the project ends. Lay them flat. Stack them in an orderly manner. Store them away from heat, acids, alkalis, oils, and chemicals.

For the lower pier (column) concrete, use the same method as regular reinforced concrete.

Embedded steel plates and bolts

Pour concrete into the lower buttress (column) to install the lower embedded plate. Let it set, then repeat the process. Mark the center and edges of the lower embedded plate when the concrete begins to set. Note the top elevation of the lower pier (column) with a measuring tool like a total station. Place the elevation control point on the lower pier (column). This checks the horizontal position, elevation, and flatness of the lower embedded plate. Position the anchor frame in the vertical center of all four sides of the support. Use a plumb bob to ensure it is straight. Then, secure it to the column reinforcement with a short reinforcement.

The anchor frame screw (at least 18 mm in diameter) must be set to a specific length. Then, check the elevation with a tool to make sure all anchor frames have the same screw height.

Check the elevation, alignment, and flatness of the lower embedded plate on the pier before pouring the concrete again.

You must seal and protect the sleeve bolt hole. Pour the concrete from the pouring hole using a special funnel. This keeps the concrete out of the bolt hole. The secondary poured concrete needs to be one grade stronger. It should also have high mobility and low shrinkage. Two 25 mm diameter vent holes on the embedded plate can exhaust the gas in the concrete. You must water and cure the concrete for at least 14 days and 12 hours after pouring.

Install HDR high-impedance rubber beam.

The concrete in the lower pier (column) must reach 75% strength first.

Before installation, retest the HDR high-impedance rubber beam’s position. Keep records for filing. Mark the specs and model of the HDR high-impedance rubber beam on the top of the lower pier (column). Do this according to the layout plan after cleaning the surface.

Hoist HDR high piling rubber beam equipment with a tower crane on site. If a tower crane isn’t available, use a truck crane. The HDR high damping rubber beam connects its upper and lower plates with split steel. Secure the HDR high pressing rubber beam using slings and lifting screws. Attach them to both the upper and lower connecting plates. Then, use the specified steel wire rope (with a hemp rope core) to bind the support. Also, place corner pads at the edges to protect the steel wire rope from damage. Hook the wire rope with the hook and lock the safety pin. Use a U-shackle snap ring at the lifting point. Use double slings for lifting. Hoist the HDR beam first. Align the rubber beam bolt hole with the steel plate bolt hole. Lower it with a gradual motion and rotate it in a controlled manner to reach the target position.

HDR high damping rubber bearing fastening

When the HDR high stamping rubber beam is set, two skilled workers will work together to install it. One technician will guide them. Align the bolt holes of the connecting steel plates and the embedded steel plates of the bearing. Lower the HDR high stamping rubber beam in small increments. Once you confirm the bolts are in place, put the bearing on the lower embedded plate. To ensure each bolt has the right locking torque, tighten them to 75%. Tighten the bolts that link the lower embedded plate to the HDR high damping rubber beam. Apply the same amount on both sides. Perform this on opposite sides or along diagonal lines.

Re-measure the height and location of the HDR high pressing rubber beam after you install it. Then, record the details for filing.