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Concrete-filled steel tube connector and construction method thereof

A technology of steel pipe concrete and connectors, which is applied in the direction of construction, building structure, and building material processing, etc., to achieve the effects of firm overall connection, good practical effect, and good axial force performance

Inactive Publication Date: 2012-07-11
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems existing in the existing connection methods of concrete-filled steel pipe structures, and provides a method that can significantly improve the connection strength of concrete-filled steel pipe joints, ensure the firmness of joint connections, enhance the anti-fatigue performance of joint connections, and at the same time realize rapid on-site construction operations. Steel tube concrete connector and its construction method

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  • Concrete-filled steel tube connector and construction method thereof
  • Concrete-filled steel tube connector and construction method thereof
  • Concrete-filled steel tube connector and construction method thereof

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Embodiment Construction

[0021] The present invention is described in detail below in conjunction with embodiment.

[0022] see figure 1 , figure 2 , image 3 , Figure 4 , The concrete-filled steel pipe connector is composed of three separate components: a cover plate 1, a chuck 2, and a sleeve 3. The cover plate 1 is a ring-shaped body with a circular outer edge, four stop blocks 9 are fixed on its upper edge by quartering, and four arc-shaped cover plate convex teeth 7 are fixed on the outside of its lower edge by quartering. , the four cover plate convex teeth 7 correspond to the positions of the four limit blocks 9; there is a chuck pocket 13 in the middle of the chuck 2, and the diameter of the chuck pocket 13 is the same as that of the connected upper steel pipe 10 and the lower steel pipe 5. diameter and equal size (square mouth), the edge of the chuck sleeve 13 presses down the position of the cross-guiding shear plate 4 welded on the inner wall of the steel pipe 5, and four stiffening r...

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Abstract

The invention relates to connection of concrete-filled steel tube structures, in particular to a concrete-filled steel tube connector and a construction method thereof. The concrete-filled steel tube connector comprises a cover plate, a clamping disk and a sleeve, and the parts are designed and manufactured in a factory according to the requirements of a steel tube to be connected on size and connection strength. The parts are respectively connected with the end of the steel tube during mounting, and are clamped and temporarily secured according to construction process requirements, fiber doped high-strength expansion grout is filled into the steel tube, and the temporary support is removed and the steel tube is filled with concrete when the design strength is reached. The loaded high-strength expansion grout is strained in three directions by the steel tube and the sleeve, so that smooth load transfer is guaranteed, and connection rigidity and strength are also improved. By means of the concrete-filled steel tube connector, a joint has high axial load bearing capacity, high bending resistance and high fatigue resistance and has the advantages of fastness and convenience in constructional operation, and the shortages of traditional flange connection, welding and casing connection can be avoided.

Description

[0001] Technical field: [0002] The invention relates to the connection of steel pipe concrete structures, in particular to a steel pipe concrete connector and a construction method thereof. Background technique: [0003] At present, steel tube concrete structures are widely used in high-rise buildings. Generally, the connection of steel pipe concrete structure adopts flange connection, welding or casing connection. The flange connection is a connection method in which the end of the steel pipe member is fixed to a flange, and then the two flanges are fastened by bolts. Although the flange connection is convenient for construction, the gaps in the interface are prone to corrosion, resulting in connection failure. At the same time, the requirements for the processing accuracy of the connecting devices are too high, and the cost of manufacturing is too large. Welding is a connection method that uses the metal molecules between the connecting parts to penetrate each other at...

Claims

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Application Information

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IPC IPC(8): E04B1/58E04G21/00
Inventor 苏幼坡徐国强高林陈建伟陈海彬
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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