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Elastic energy-dissipation concrete prefabricated wall plate composite connecting piece

A prefabricated wall panel, composite connection technology, applied in the direction of walls, building components, earthquake resistance, etc., to achieve the effect of increasing horizontal pullout strength, high shear strength and stiffness

Pending Publication Date: 2019-02-01
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of existing prefabricated concrete wall panel connectors, and propose a composite connector for elastic energy-dissipating concrete prefabricated wall panels. Shear and pull-out strength, enhance the overall working performance of prefabricated walls, and solve the technical problems of connection reliability

Method used

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  • Elastic energy-dissipation concrete prefabricated wall plate composite connecting piece
  • Elastic energy-dissipation concrete prefabricated wall plate composite connecting piece
  • Elastic energy-dissipation concrete prefabricated wall plate composite connecting piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , 2 , 4, 5, 6, and 7 show:

[0035] Step 1: Put FRP composite material sleeves 2 on the two prefabricated concrete wall panels 1 respectively, reserve a round hole 9 on the side of the FRP composite material sleeve 2, and use a certain thickness of elastic material 6 (rubber, polyurethane, etc.) The round hole 9 is bounded (it has certain ductility, and when an earthquake load occurs, it can generate energy consumption and play a protective role);

[0036] Step 2: Paste the concrete prefabricated wall panel 1 and the composite material cover 2 firmly with resin glue;

[0037] Step 3: Insert the hollow steel pipe 4 molded with the FRP material 7 into the round hole 9 (the outer diameter of the composite material screw is 10-20 mm), and leave grooves in the hollow steel pipe 4 (the quantity depends on the situation);

[0038] Step 4: Fix the freely openable circular clip 3 (with a certain degree of elasticity) on the groove of the hollow steel pipe 4 s...

Embodiment 2

[0041] Such as image 3 , 8 Shown:

[0042] Step 1: Put FRP composite material sleeves 2 on the two prefabricated concrete wall panels 1 respectively, reserve a round hole 9 on the side of the FRP composite material sleeve 2, and use a certain thickness of elastic material 6 (rubber, polyurethane, etc.) The round hole 9 is bounded (it has certain ductility, and when an earthquake load occurs, it can generate energy consumption and play a protective role);

[0043] Step 2: Paste the concrete prefabricated wall panel 1 and the composite material cover 2 firmly with resin glue;

[0044] Step 3: Insert the hollow steel pipe 4 molded into the FRP material into the circular hole 9 (the outer diameter of the composite material screw is 10-20 mm), and drill pin holes on the hollow steel pipe 4 (the number depends on the situation, for Insert pin), the hole diameter is about 5mm, the angle between two pin holes in the same plane is 180°, and the interval between adjacent pin holes a...

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Abstract

The invention discloses an elastic energy-dissipation concrete prefabricated wall plate composite connecting piece, which comprises a concrete prefabricated wall plate, an FRP composite sleeve, circular clamping plates, a hollow steel pipe, springs, a plug and a circular hole. The FRP composite sleeve and the concrete prefabricated wall plate are firmly bonded through resin glue; the circular holeis reserved in the side face of the FRP composite sleeve, and the edge of the circular hole is wrapped with an elastic material of a certain thickness; an FRP material is arranged on the outer wall of the hollow steel pipe in a mould-pressed mode to form an FRP-hollow steel pipe composite structure; the one or more circular clamping plates are mounted on the surface of the FRP-steel pipe, or oneor more rows of two-ended holes are drilled in the surface of the FRP-steel pipe, FRP rods are inserted, and thus the anti-pulling performance of the connecting piece is improved; and the springs aremounted between the clamping plates or the FRP rods, and the energy dissipation effect is achieved under the earthquake effect. Pre-buried piece connection is not needed, the connection and anchorageeffects are effectively improved, high anti-shear and anti-pulling strength is achieved, and the overall working performance of a prefabricated wall is enhanced.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a composite connector of elastic energy-dissipating concrete prefabricated wall panels, which is suitable for enclosure walls of prefabricated buildings or integrated shear walls for thermal insulation and stress. Background technique [0002] In recent years, the connectors used in the prefabricated prefabricated concrete sandwich insulation exterior wall panels that can be put into use at home and abroad mainly include metal and composite materials, and there are many problems in both: although metal connectors such as steel bars have high strength , low price, etc., but the thermal conductivity of the material is large, and there is a "hot and cold bridge" effect, which affects the insulation effect of the wall, and the corrosion resistance of the steel bar is poor, which affects the life of the component. If stainless steel connectors are used, the cost will be greatly ...

Claims

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Application Information

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IPC IPC(8): E04B2/00E04B1/61E04B1/98E04C2/288E04H9/02
CPCE04B1/6108E04B1/6162E04B2/00E04C2/288E04H9/021
Inventor 王俊姚盛杰陈志林李俊杰刘伟庆方海
Owner NANJING UNIV OF TECH
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