A high ductility concrete energy dissipation filled wall frame structure and its construction method

A high-ductility concrete and frame structure technology, applied to walls, building components, building structures, etc., can solve problems such as loss, casualties and property, and achieve the effects of improving bearing capacity, convenient construction, and simple structure

Active Publication Date: 2022-01-07
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Failure or collapse of an infill wall can cause serious injury, death and property damage

Method used

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  • A high ductility concrete energy dissipation filled wall frame structure and its construction method
  • A high ductility concrete energy dissipation filled wall frame structure and its construction method
  • A high ductility concrete energy dissipation filled wall frame structure and its construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Such as figure 1 and 2 As shown, this embodiment provides a high ductility concrete energy-dissipating infill wall frame structure. There is a 15mm thick high ductility concrete surface layer 5, and the thickness of the polystyrene foam board flexible connection layer is 20mm;

[0045] The high ductility concrete formula used in this embodiment is: cement, fly ash, silica fume, sand, PE fiber, steel fiber and water, wherein, by mass ratio, cement: fly ash: silica fume: sand: water = 1: 0.1: 0.2: 0.76: 0.22, based on the total volume of cement, fly ash, silica fume, sand and water mixed uniformly, the volume content of PE fiber is 1%, and the volume content of steel fiber is 2 %;

[0046] The concrete used is C30 grade commercial concrete, the frame beams and column reinforcements are all HRB400 grade steel bars, the infill wall is made of MU5.0 sintered hollow bricks (240mm×200mm×115mm), the infill wall is built in the form of Transit, and the thickness of the mortar...

Embodiment 2

[0062] This embodiment is different from embodiment 1 in that:

[0063] This embodiment provides a high ductility concrete energy-dissipating infill wall frame structure with the following dimensions: the length of the frame column centerline is 5.0 m, the column height is 3.0 m, and the thickness of the infill wall is 200 mm; the outer surface of the infill wall 4 is coated with 10 mm Thick high-ductility concrete surface layer 5; the flexible material used is polyurethane foaming agent with a thickness of 10mm;

[0064] The formula of high ductility concrete is: cement, fly ash, silica fume, sand, PE fiber, steel fiber and water, among which, in terms of mass ratio, cement: fly ash: silica fume: sand: water = 1:0.2:0.28 : 0.76: 0.27, taking the total volume of cement, fly ash, silica fume, sand and water as the base, the volume content of PE fiber is 1.3%, and the volume content of steel fiber is 1.3%.

[0065] The structure of this embodiment is carried out above-mentioned...

Embodiment 3

[0070] This embodiment is different from embodiment 1 in that:

[0071] The centerline length of the frame column is 7.0m, the column height is 4.2m, and the thickness of the filling wall is 200mm. The outer surface of the filling wall 4 is coated with a 20mm thick high ductility concrete surface layer 5; the flexible material used is silicone glue with a thickness of 25mm.

[0072] The formula of high ductility concrete is: cement, fly ash, silica fume, sand, PE fiber, steel fiber and water, among which, in terms of mass ratio, cement: fly ash: silica fume: sand: water = 1:0.3:0.4 : 0.76: 0.32, taking the total volume of cement, fly ash, silica fume, sand and water as the base, the volume content of PE fiber is 1.5%, and the volume content of steel fiber is 2%.

[0073] The structure of this embodiment is carried out above-mentioned test, the result shows:

[0074] (1) The failure mechanism of the specimen is beam-hinge failure, the energy-dissipating filling wall and frame...

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Abstract

The invention provides a high-ductility concrete energy-dissipating filled wall frame structure and a construction method thereof to solve the problems of insufficient bearing capacity, poor ductility and low energy-dissipating capacity of ordinary filled-wall frame structures. The high ductility concrete energy-dissipating filled wall frame structure of the present invention is composed of frame columns, frame beams, flexible connections, filled walls and high ductile concrete surface layers; during construction, the flexible materials are first fixed on the frame columns and then the filled walls are built. Finally, apply high ductility concrete evenly on the surface of the filling wall. The bearing capacity, ductility and energy dissipation capacity of the high ductility concrete energy-dissipating infill wall frame structure of the present invention are significantly higher than those of ordinary infill wall frames, which reduces the restraint effect of the infill wall on frame columns and reduces damage to frame columns. The high-ductility concrete energy-dissipating infill wall frame structure has the advantages of convenient construction, simple structure, and low cost. It is suitable for both new structures and reinforcement and reconstruction of existing structures.

Description

technical field [0001] The invention belongs to the technical field of building structure engineering and reinforcement and transformation, and in particular relates to a high ductility concrete energy-dissipating filled wall frame structure and a construction method thereof. Background technique [0002] Infill wall frame construction is a widely used structural form. When designing the frame structure of the infill wall, the infill wall is regarded as a non-structural component, and the infill wall is regarded as a vertical load acting on the frame structure, and its contribution to the stiffness of the frame structure is considered through the method of reducing the natural vibration period. Interactions between infill walls and frames are ignored. [0003] Under earthquake action, the deformation capacity of the infill wall and the frame is not coordinated, and the infill wall hinders the deformation of the frame. Due to the high stiffness of the infill wall, it bears m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/20E04B2/74E04B1/682E04B1/98E04H9/02
CPCE04B1/20E04B2/74E04B1/6812E04B1/6813E04B1/98E04H9/021E04H9/025
Inventor 邓明科吕浩范洪侃
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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