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Prestressing Apparatus and Strengthening Method for Reinforcing Bar Near Surface of Reinforced Concrete Beam

A technology of reinforced concrete beams and application devices, which is applied in construction, building maintenance, building construction, etc., can solve problems such as inconvenience in applying prestress, and achieve the effects of simple structure, stable load and convenient use.

Active Publication Date: 2021-10-22
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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  • Prestressing Apparatus and Strengthening Method for Reinforcing Bar Near Surface of Reinforced Concrete Beam
  • Prestressing Apparatus and Strengthening Method for Reinforcing Bar Near Surface of Reinforced Concrete Beam
  • Prestressing Apparatus and Strengthening Method for Reinforcing Bar Near Surface of Reinforced Concrete Beam

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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 prestressing device and a reinforcement method. By fixing a prestressing anchor on the reinforcement reinforcement to be installed, an anchor plate is fixed at the bottom of the reinforced concrete beam to form a reinforcement reinforcement to be installed. Install the basic structure, and then use the anchorage to realize the pretension of the reinforcement bar to be installed. Through the jack anchorage and the through-hole jack fixed at the bottom of the reinforced concrete beam, and cooperate with the positioning force transmission plate and the prestressing anchorage, the installation can be realized. The load on the reinforcing rib is loaded. One end of the through-hole jack is fixed on the jack anchor, and the other end is fixedly connected with the positioning force transmission plate. One end of the positioning force transmission plate is provided with a clamping opening, which can facilitate the positioning of the force transmission plate and the reinforcement to be installed. The prestress on the tendon is applied on the side of the anchor to realize the load loading. The device has a simple structure and is easy to use, which can realize the prestressed loading of the reinforcement and prevent the strain lag between the reinforcement and the beam when the load is increased and deformed in the later stage.

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 Patents(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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