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Reinforced concrete beam near-surface reinforcement rib prestressing device and reinforcement method

A reinforced concrete beam and applying device technology, which is applied in building maintenance, construction, building construction, etc., can solve the problems of inconvenient application of prestress, and achieve the effects of simple structure, reduced strain lag, and easy installation

Active Publication Date: 2019-11-15
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a prestressing device and reinforcement method for near-surface reinforcing bars of reinforced concrete beams, so as to overcome the inconvenience of applying prestress in the installation process of near-surface reinforcing bars in the prior art

Method used

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  • Reinforced concrete beam near-surface reinforcement rib prestressing device and reinforcement method
  • Reinforced concrete beam near-surface reinforcement rib prestressing device and reinforcement method
  • Reinforced concrete beam near-surface reinforcement rib prestressing device and reinforcement method

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Embodiment Construction

[0046] The present invention is described in further detail below in conjunction with accompanying drawing:

[0047] In order to better understand the present invention, the embodiment of the present invention will be explained in detail below by taking a reinforced concrete beam with three reinforcement bars as an example in conjunction with the accompanying drawings. At the same time, the specific implementation described here is only used to explain the present invention, not to limit the present invention.

[0048] see Figure 1 to Figure 14 , a reinforced concrete beam near-surface reinforcement prestressing device, comprising a prestressing device, a prestressing anchor 2 and an anchoring device; the prestressing anchor 2 is fixed on the reinforcing bar to be installed; the anchoring device includes Anchor plate and anchorage 10, the anchor plate is fixed on the two ends of the reinforcing bar to be installed at the bottom of the reinforced concrete beam, the two ends of ...

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Abstract

The invention discloses a reinforced concrete beam near-surface reinforcement rib prestressing device and a reinforcement method. A prestressing anchorage device is fixed to a reinforcement rib to beinstalled, an anchor plate is fixed to the bottom of a reinforced concrete beam, an installation basic structure of the reinforcing rib to be installed is formed, then the reinforcement rib to be installed is pre-tightened through the anchorage device, a jack anchorage device and a centre hole jack are fixed to the bottom of the reinforced concrete beam, a positioning force transmitting plate andthe prestressing anchorage device are matched, load on the reinforcing rib to be installed is loaded, one end of the centre hole jack is fixed to the jack anchorage device, and the other end of the centre hole jack is fixedly connected with a positioning force transmitting plate; and a clamping opening is formed in one end of the positioning force transmitting plate, the positioning force transmitting plate can be conveniently in contact with one side surface of the prestressing anchorage device on the reinforcement rib to be installed, and load loading is realized. The reinforced concrete beam near-surface reinforcement rib prestressing device is simple in structure and is convenient to use, can realize the prestressing loading of the reinforcing rib, and prevents strain lag between the reinforcing rib and a beam body when the load and deformation are increased later.

Description

technical field [0001] The invention relates to the field of concrete reinforcement, in particular to a prestressing device and a reinforcement method for near-surface reinforcement bars of reinforced concrete beams. Background technique [0002] In building structures, reinforced concrete beams, as the main stressed members, play an important role in bearing and transmitting loads. For earthquake-damaged structures that can continue to be used after an earthquake, or some building structures that change their functions, they need to be reinforced. On the other hand, most reinforced concrete beams are in the working state with cracks. In the atmospheric environment, especially in the corrosive environment, as time goes by, the steel bars in the beam body will corrode, resulting in a decrease in bearing capacity. It needs to be reinforced. [0003] The commonly used methods for strengthening reinforced concrete beams are the pasting steel plate method and the near-surface r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G23/02
CPCE04G23/0218
Inventor 邢国华常召群赵嘉华吴涛
Owner CHANGAN UNIV
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