Highway T-beam transverse diaphragm prestressed reinforcement structure and its strengthening method

Abstract

The invention belongs to the technical field of highway bridge reinforcing projects , and discloses a highway T beam diaphragm plate prestress reinforcing structure and a working method for reinforcement using the reinforcing structure. The highway T beam diaphragm plate prestress reinforcing structure is mainly characterized by comprising a beam body and diaphragm plates, wherein concrete reinforcing bodies are arranged on two sides of the diaphragm plates in the lateral direction of a bridge, under the diaphragm plates, and on two sides of the diaphragm plates under the beam body in the longitudinal direction of the bridge; lateral post-embedded bars are arranged between the beam body and the concrete reinforcing bodies; vertical post-embedded bars are arranged at the bottom of the beam body; lateral main reinforcing bars and flat bellows in which lateral prestress bars are arranged are arranged in the concrete reinforcing bodies; the lateral main reinforcing bars and the flat bellows are respectively connected with the lateral post-embedded bars through large stirrups and are connected with the vertical post-embedded bars through small stirrups; under-anchor backing plates and multi-hole flat anchorage devices are arranged at two end parts of each of the concrete reinforcing bodies. According to the highway T beam diaphragm plate prestress reinforcing structure disclosed by the invention, the beam body is not damaged; the lateral join disease problem of the highway bridge is solved through utilizing an active reinforcing technology with prestress, and the durability of T beams is improved.

Description

technical field [0001] The invention belongs to the technical field of road and bridge reinforcement engineering, and in particular relates to a prestressed reinforcement structure for a highway T-beam diaphragm that actively reinforces a diaphragm of a bridge with a disease by utilizing a prestressing technology and a construction method for reinforcing the same. Background technique [0002] Reinforced concrete T-beam is the most widely used prefabricated simply supported beam bridge on highways in my country due to its advantages of saving materials, clear force, simple calculation, and mature construction technology. At the same time, due to various reasons in the operation process, the bridge mainly has the following diseases: [0003] (1) Horizontal connection defects: cracking of the diaphragm, desoldering and fracture of the connecting steel plate; [0004] (2) Beam body defects: longitudinal cracking and water seepage of the bridge wing plate, oblique cracking at t...

AI Technical Summary

Problems solved by technology

[0016] Apply prestress to the reinforcing material arranged on the reinforced diaphragm to form a prestress active reinforcement system. Although it is also used in the lateral reinforcement of railway bridges, etc., the mechanism of the live load of highway bridges is more complicated. The cross-section is smaller, and it is not possible to drill holes on the web like railway bridges

Images