1. Chiseling and cleaning of pier and abutment top. When compensating shrinkage mortar is used to fix the bearing, iron chisel is used to chisel the supporting surface of the bridge bearing. The chisel degree satisfies the relevant provisions of "Bridge Concrete Construction Technology Standard" on the treatment of construction joints, and the top surface is cleaned up. When epoxy mortar is used to fix the bearing, the top surface is cleaned up and the supporting surface of the bearing is dry.
2. Clean up the reserved holes. Check the location, size and depth of anchoring bolt holes on pier and abutment top before cleaning, and clean thoroughly after qualified.
3. Preparing mortar. The strength of shrinkage compensating mortar should not be less than 35 MPa.
4. Install anchor bolts and bridge supports. The rubber bearing of the bridge is in place smoothly. The steel wedge is used at the four corners of the bridge support to levelize the base plate of the support and the support pad of the pier and abutment. The bottom of the bridge support plate should be 20-50 mm higher than the top of the pier and abutment, and then the installation center line and elevation should be checked.
5. Install the template. The sizes of the formwork on both sides along the transverse axis of the pier should be larger than 100 mm of the width of the bridge support.
6. Pouring mortar. Epoxy mortar or shrinkage compensating mortar is used to fill the gap between the bolt hole and the base plate of bridge rubber bearing and pier abutment. When pouring, it is poured from one end to flow out and exhaust from the other end to ensure no empty drum.
7. When the mortar reaches the designed strength, remove the four-angle steel wedge and fill the joint with epoxy mortar.