Rubber strips for bridge expansion joints listen to this name and you will know that it is related to expansion joints. What is rubber strips for bridge expansion joints! Let Xiao Bian take everyone to know about it!
Rubber strips for bridge expansion joints are specially designed for various types of bridge expansion joints. The specifications and models are all produced in accordance with the standards of the Ministry of Communications and Railways. They can be used in conjunction with C- type, E-type and F-type joints and other types of expansion joints.
Construction Technology of Rubber Strip for Bridge Expansion Joint
1. Cut off the old rubber strip
(1), on-site survey of rubber strip damage and take photos to record, determine the scope of cutting, in order to reduce the rubber strip interface, should try to reduce the replacement of paragraphs, and mark the section to be cut with a mark
(2) Clean the surface, first cut off the rubber strip along the cutting section with a wallpaper knife, then cut the rubber strip into two sections along the telescopic direction to pull out the old rubber strip, and continue to cut off the old rubber strip if it is difficult to pull out until all the residues in the notch are cleaned up.
2. Clean the sundries in the joint
(1) Use steel drill to insert and pound the internal impurities into fragments and then use a fixture to clip out the fragments;
(2), difficult to clip out of the debris if you can find the exit in the lower part, you can push the debris to the bottom, take out from the lower part of the bridge
(3) Use high-pressure air or high-pressure water flow to thoroughly clean up the garbage in the joint, and clear the site in time.
3. Install rubber strip
(1) Apply lubricating oil evenly to the grooves on both sides of the steel beam;
(2) Place the prepared rubber strip flat at the installation position;
(3) Use special tools to insert both sides of the rubber strip into the groove of the steel beam
4. Connection of old and new rubber strips
(1) The end of the old and new rubber strips is cut with a wall knife to cut the end face with a reverse angle of 45 °
(2) After cleaning the section to be bonded with gasoline, polish it with a sanding machine and apply two layers of adhesive.
(3) Tightly bond the bonding section
(4) Grind the top surface of the rubber strip with a sanding machine within a range of about 20cm at the bonded joints, and apply two layers of azidine adhesive.
(5) Pre-prepared rubber patch treatment, apply two layers of adhesive
(6), the adhesive patch in the treatment of good rubber strip seams, with a mallet gently hit to make tight, 10~15 minutes after the opening of the traffic
Rubber strip for bridge expansion joint is the use of high elasticity of rubber to adapt to temperature changes, the bridge deck produced by the expansion deformation. The rubber strip for bridge expansion joints has the advantages of convenient installation, stable driving, waterproof, dustproof, low noise, light weight and low cost, which has been welcomed and praised by the bridge engineering community. The rubber strip for bridge expansion joints is resistant to aging and made of wear-resistant rubber. It can withstand repeated loads of vehicles and has a long service life. Can be applied to the replacement of the old bridge, but also for the construction of new bridge selection.