Bridge reinforcing device based on load transfer

Abstract

The invention discloses a bridge reinforcing device based on load transfer, which comprises a supporting system and a newly-added beam body, wherein the bottom of the newly-added beam body is mountedon the supporting system, the supporting system is mounted on a bent cap, the top of the newly-added beam body is propped against the bottom of a wet joint, and the top flange of the newly-added beambody is propped against the flange of an original beam body. The beneficial effects are that the new beam body is additionally arranged under the condition that the structure and the bearing capacityof the original beam body are not changed; part of the load borne by the original beam body is transferred to the new beam body, the original beam body is enabled to meet the standard of new design specifications, the original beam body and the newly-added beam body both meet the design benchmark period of 100 years, the newly-added beam body can achieve standardized design, industrialized production and field assembly construction, the construction period is short, and the engineering cost is low; and the newly-added beam body and the original beam body form a combined structure to jointly bear automobile loads on the bridge deck, and thus the bearing capacity of the bridge is improved.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, in particular to a bridge reinforcement device based on load transfer. Background technique [0002] With the development of my country's economy, on the one hand, the vehicle load axle load and traffic volume continue to increase. The bridges designed according to the "General Code for Design of Highway Bridges and Culverts" (JTJ 021-89) and (JTG D60-2004) are facing the problem of insufficient bearing capacity. It meets the requirements of the current standard "General Specification for Design of Highway Bridges and Culverts" (JTG D60-2015). On the other hand, after the bridge has been overloaded for a long time, the bearing capacity of the original beam body has declined, and some original beam bodies have appeared transverse cracks and web oblique cracks. The reinforcement methods recommended in "Code for Design of Highway and Bridge Reinforcement" (JTG / T J22-2008) include enlargi...

AI Technical Summary

Problems solved by technology

[0004] 1. Some damage to the original structure;

[0005] 2. The durability of pasted steel plates and fiber composite materials cannot be guaranteed;

[0007] 4. The construction period is generally longer;

[0008] 5. During the construction process, the expressway operation will be affected

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