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External Prestressed Strengthening Structure and Method of Concrete T Beam

A technology of external prestressing and strengthening structures, which is applied in bridge reinforcement, bridges, bridge materials, etc., can solve the problems of reducing the durability of steel strands, expensive FRP bars, and complicated construction processes, so as to improve bearing capacity and durability , good reinforcement effect and convenient construction

Active Publication Date: 2018-06-29
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Some of the existing prevention and protection methods reduce the durability of the steel strand, or the price is too high, such as FRP bars are expensive and the construction process is too complicated

Method used

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  • External Prestressed Strengthening Structure and Method of Concrete T Beam
  • External Prestressed Strengthening Structure and Method of Concrete T Beam
  • External Prestressed Strengthening Structure and Method of Concrete T Beam

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] see Figure 1 to Figure 3 The reinforcement structure of the present invention includes several vertical diaphragms 6 arranged side by side on the lower side of the concrete T beam flange 5; the bottom of the concrete T beam web 7 is provided with a pair of horizontal support pads 4, and each pair of support pads The plates 4 are all located between two adjacent diaphragms 6; one end of the high-strength aluminum alloy rib 3 is respectively fixed on the diaphragm 6, and one end of the high-strength aluminum alloy rib 3 passes through the diaphragm 6 and passes through the end plate 1 and aluminum alloy bolts 2 for anchoring to form the anchor end 8; the other end of the high-strength aluminum alloy bars 3 passes through the diaphragm 6, and through the end backing plate 1 and the wedge-shaped clip-type anchor 10 through the core-type jack Anchored by ...

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Abstract

The invention relates to an external prestressing reinforcing structure and method for a T-shaped concrete beam. The structure comprises multiple vertical transverse partition plates arranged on the lower side of a T-shaped concrete beam flange side by side. Horizontal supporting cushion plates in pairs are arranged at the bottom of a T-shaped concrete beam web, and the supporting cushion plates in each pair are located between two adjacent transverse partition plates; in the transverse partition plates on the two sides of the supporting cushion plates, one end of a high-strength aluminum alloy rib is fixed to one transverse partition plate through an aluminum alloy bolt to form an anchoring end, and the other end of the high-strength aluminum alloy rib is fixed to the other transverse partition plate through a wedge-shaped strand tapered anchorage to form a tensioning end; and the middle portion of the high-strength aluminum alloy rib bypasses the lower sides of the supporting cushion plates and is in a horizontal state. By the adoption of the structure and method, the bearing capacity and durability of the T-shaped concrete beam can be improved while it is guaranteed that the bearing performance of the T-shaped concrete beam is not reduced, and a reinforcing effect is good; and meanwhile prestress can be effectively applied to an aluminum alloy through the formed anchoring end and the formed tensioning end.

Description

【Technical field】 [0001] The invention relates to the field of concrete construction, in particular to an external prestressed reinforcement structure and method of a concrete T-beam. 【Background technique】 [0002] T-beams are widely used in concrete bridge structures due to their characteristics. In the existing bridge structure, the structure or components are often seriously damaged due to design errors, construction errors, and material quality not meeting the requirements; or due to increased structural loads, changes in use functions, and force majeure factors such as earthquakes and fires. , the demand for reinforcement of concrete T-beams is increasing. Among them, external prestressed reinforcement has been widely used in practical engineering because of its own advantages of high efficiency, economy and simple construction. [0003] At present, when external prestressing is performed on concrete T-beams, most of the materials used are steel strands, and prestres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D22/00E01D101/28
CPCE01D22/00E01D2101/28
Inventor 邢国华常召群吴涛
Owner CHANGAN UNIV
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