Novel reinforcing device for reinforced concrete bridge pier and construction method thereof

Abstract

The invention discloses a novel reinforcing device for a reinforced concrete bridge pier, which comprises two U-shaped steel hoop parts in corresponding buckling, and bolt pre-tightening parts applying prestressing force to the steel hoop parts, wherein ends of the two steel hoop parts are respectively and correspondingly welded together to form a closed hoop matched with the periphery of the bridge pier; and FRP sheets are fixedly and continuously adhered on the outer side of the steel hoop parts in the length direction. According to the invention, due to the adoption of the technical scheme, the novel reinforcing device originally integrates the FRP sheets with good tensile strength and the steel hoop parts with good plastic deformation performance; with the steel hoop parts, the stress lagging condition is avoided, and the features of the FRP sheets can be fully utilized, and accordingly, the comprehensive reinforcing strength of the device is effectively improved. Meanwhile, with the corrosion resistance and durability of the RFP sheets, the steel hoop parts can be effectively protected. The invention also provides a construction method for the novel reinforcing device, which is clear and simple in procedures and high in construction efficiency.

Description

technical field [0001] The invention relates to the technical field of bridge pier reinforcement, in particular to a novel reinforcement device for reinforced concrete bridge piers and a construction method thereof. Background technique [0002] As an important part of the lifeline project, the bridge is the "throat" of the transportation hub. The destruction of the bridge will lead to the interruption of the lifeline, and the loss is immeasurable. Bridge piers are the main load-bearing and lateral force-resistant components of bridges, and the damage of bridge piers will often cause the overall collapse of the bridge. A large number of actual earthquake damage shows that the collapse of existing bridges is often caused by insufficient seismic performance of piers, and the most serious defect is insufficient configuration of stirrups. In the seismic strengthening of reinforced concrete piers, attention should be paid to how to make the supplementary part produce good latera...

AI Technical Summary

Problems solved by technology

However, due to the stress hysteresis effect between the reinforcement material and the existing reinforcement structure, the high-strength characteristics of FRP materials cannot be fully utilized, which greatly affects its reinforcement effect

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