Steel screen restricted column plastic hinge region concrete structure and making method thereof

A technology of concrete structure and steel mesh, which is applied in the direction of structural elements, columns, pier columns, etc., can solve the problems of low ductility of reinforced concrete columns, and achieve the effects of convenient and fast construction, improved ductility, and simple operation

Inactive Publication Date: 2013-07-31
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low ductility of reinforced concrete columns, and proposes to take a structural measure in construction, that is, a concrete st

Method used

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  • Steel screen restricted column plastic hinge region concrete structure and making method thereof
  • Steel screen restricted column plastic hinge region concrete structure and making method thereof
  • Steel screen restricted column plastic hinge region concrete structure and making method thereof

Examples

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Example Embodiment

[0025] 1. Lashing of steel cage

[0026] The lashing of the steel cage must be carried out in strict accordance with the relevant specifications and drawings.

[0027] 2. Cutting of expanded metal mesh

[0028] The width B of the expanded metal mesh is 1.5 times the maximum value of the column cross-section b or h, and the length of the overlapped part is 2 (b / 2+h / 2+2×5mm), where b and h are the side of the column cross-section long.

[0029] 3. The bending of expanded metal mesh

[0030] Taking the longest edge of the steel mesh as the reference line, first measure half b / 2 of the cross-sectional width with a tape measure, and then subtract the protective layer of the steel mesh, which is 5mm, as the first bending line; then take the first bending line as the reference line. Measure the height of the entire column section and subtract two protective layers of expanded metal, namely 10mm, as the second bending line; further use the second bending line as the reference line, measure th...

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Abstract

The invention discloses a steel screen restricted column plastic hinge region concrete structure and a making method thereof, and belongs to the technical field of building engineering construction. In the invention, the binding of steel screens outside the steel reinforcement cage of a column plastic hinge region provides a good restriction effect for concrete, can prevent the early shedding of concrete and improves the column ductility. The making method concretely comprises the following operation steps: steel reinforcement cage binding, steel screen cutting, steel screen bending, steel screen installation, and column formwork and concrete pouring and vibration. The steel screen restricted column plastic hinge region concrete structure effectively raises the rotation capability of the column plastic hinge region, improves the column ductility and improves the concrete work state.

Description

technical field [0001] The invention relates to a concrete structure in the plastic hinge area of ​​a steel mesh constrained column and a preparation method thereof, belonging to the technical field of construction engineering. Background technique [0002] In the structural engineering of our country and other countries in the world, due to the superiority of reinforced concrete structure in structural performance, economic indicators, and earthquake resistance, it has been widely used in construction engineering. The column is one of the important load-bearing members of the frame structure, which is extremely sensitive to the earthquake effect. Under the earthquake, when the concrete in the plastic hinge area of ​​the column reaches the ultimate bearing capacity under repeated loads, the concrete between the stirrups will gradually fall off, and the bearing capacity and energy dissipation capacity will be lost when the deformation is small, resulting in the collapse of th...

Claims

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Application Information

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IPC IPC(8): E04C3/34E04C5/01E04C5/04E04B1/98E04G21/00E04G21/12
Inventor 李振宝解咏平郭二伟张岩
Owner BEIJING UNIV OF TECH
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