Novel reinforcing device for reinforced concrete bridge and bridge deck, and construction method thereof

Abstract

The invention discloses a novel reinforcing device for a reinforced concrete bridge and a bridge deck. The novel reinforcing device comprises a U-shaped steel hoop part used for tightening the reinforced concrete bridge from the bottom up, and two bolt parts which are fixedly embedded below the bridge deck and respectively connected with two ends of the steel hoop part, wherein the bolt parts are locked with the steel hoop part through the support nuts. Due to the adoption of the technical scheme, the novel reinforcing device can pre-tighten and lock together the reinforced concrete bridge and the bridge deck through the connecting of the steel hoop part and the bolt parts in a matched manner. Compared with the prior art, the novel reinforcing device has the advantages that a stress lagging effect of a traditional device can be effectively avoided, maintains the effectiveness of the anchoring, ensures reinforcing effect, improves the shear strength of the reinforced concrete bridge, is simple in structure and easy to implement, and strong in comprehensive practicability. The invention also provides a construction method for the novel reinforcing device, which is clear and simple in procedures and can improve the construction efficiency of the novel reinforcing device.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, in particular to a novel reinforcement device for a reinforced concrete bridge and a bridge deck 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. Bridges often need to be reinforced due to factors such as aging in outdoor environments, increased design standards, and damage caused by traffic accidents. Shear reinforcement of bridges is an important part of bridge reinforcement. There are many shear strengthening methods for reinforced concrete bridges, and the commonly used strengthening methods include enlarging section method, pasting fiber-reinforced composite material reinforcement method, and bonded steel reinforcement method. These traditional reinforcement...

AI Technical Summary

Problems solved by technology

These traditional reinforcement methods generally have the following problems: (1) The problem of stress hysteresis effect makes the reinforcement material and the original components work poorly, which greatly affects the reinforcement effect

(2) Due to the existence of the bridge deck, the anchorage length of the reinforcement material is often insufficient, and the peeling damage of the anchorage end is prone to occur

(3) The traditional reinforcement method cannot change the stress state of the original structure, and the internal damage and defects such as cracks in the components cannot be bridged or reduced. If no prestress is applied, the reinforcement material will not be able to play a role in the existing cracks, which will greatly affect Its reinforcement effect restricts its use in the reinforcement of damaged components

(4) Bridge reinforcement has the characteristics of large volume and high demand for outsourcing reinforcement, and traditional reinforcement methods are difficult to strengthen the demand

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