Anchor bolt fixing device for steel plate adhesion for reinforcement of concrete structures

摘要

The purpose of this study is to strengthen the anchor bolt fixing device for steel plate bonding of cracked or damaged parts of various reinforced concrete structures, including bridges.In the method of strengthening the iron plate of concrete structure,The interval between the anchor bolt of the fixed reinforced iron plate and the anchor hole inserted by the anchor bolt cannot be perfectly charged, and the bond between the steel plate and the concrete structure is insufficient,When the building is compressed and the seal is deformed due to the impact, vibration and load of the concrete structure,There is a guerrilla attack between the anchor and anchor bolt. Anchor bolt is easy to relax and separate,Due to the incomplete combination between the steel plate and the structure, the cracks in the existing concrete structure continue,The strengthening effect of old or damaged concrete structure can not be expected.The steel plates on both sides of the concrete structure (10) to be strengthened in this study are all fixed by the anchor bolts (30) signed by the anchor holes (11) of the through structure (10),The epoxy filler (E) is charged through the bolt head of the anchor bolt (30) and the epoxy injection hole (31) on the bolt body,The gap between the anchor hole (11) and the anchor bolt (30) and the gap between the building (10) and the steel plate (20a) (20B) on both sides are perfectly charged,By increasing the adhesion strength between concrete structure, anchor bolt and steel plate for reinforcement, the river force and durability of the building are obviously improved.