Method for reinforcing underwater structure through fiber composite materials

Abstract

The invention discloses a method for reinforcing an underwater structure through fiber composite materials. The method comprises the following steps that the concrete surface of an underwater structure to be reinforced is processed; underwater epoxy resin or underwater non-dispersed concrete or underwater non-dispersed mortar is utilized to repair and restore on a cleaned up damage portion of the underwater structure to be reinforced, and protruding portions of the surface of the structure are polished smooth; underwater resin adhesive is uniformly daubed on the fiber composite materials with the size cut well; at lest one layer of the fiber composite materials daubed by the resin adhesive are annularly pasted to the surface of the damage repairing portion of the underwater structure to be reinforced, the fiber composite materials are pasted on the surface of the underwater structure to be reinforced layer by layer, and annular lap joint portions of the layers are mutually staggered. According to the method, the reinforcing speed is high, the construction period is short, the process is simple, water repellent treatment is carried out because cofferdam water abandoning is not needed in construction, the construction has small influences on a navigation channel, abrasion of acid and alkali to the concrete structure can be prevented after reinforcing, and the service life of the underwater structure to be reinforced is prolonged.

Description

technical field [0001] The invention relates to a method for strengthening underwater structures, in particular to a method for strengthening underwater structures such as pier columns, dam bodies and bridge foundations with fiber composite materials. Background technique [0002] During the use of buildings, due to the aging of materials, increased loads, and damage to structural parts, etc., their bearing capacity and durability will be reduced, which will affect their safety in use, especially structures located under water, which are also corroded by acid and alkali environments and rivers. Or the erosion of seawater, the collision of ships, etc., are likely to cause various damage defects in underwater structures. Seriously endanger the safety of buildings, such as the safety and service life of bridges and dams. For the repair and reinforcement of damage to underwater structures such as bridge foundations, dam bodies, and pier structures, the existing methods are main...

AI Technical Summary

Problems solved by technology

Cofferdam waste water outsourcing reinforced concrete reinforcement method requires water waste and waterproof treatment during construction, so cofferdams must be built around it, which has a great impact on the waterway and takes up a lot of resources. The cost of materials and construction of the cofferdam is high, and the construction period is long and economical. Poor performance, and occupies the channel, which has a great impact on the navigation of the ship, and because of the use of concrete and steel bars, after this method is used to strengthen, the external concrete still faces the danger of erosion, spalling and corrosion

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