The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam

A technology for concrete-filled steel tubular columns and reinforced concrete beams, which is applied to buildings and building structures, can solve the problems of complex node connection, unclear force transmission paths, and many on-site welding processes, and achieves convenient construction, less welding processes, The effect of reducing the difficulty of construction

Inactive Publication Date: 2009-10-07
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex connection between CFST columns and beams, the unclear force transmission path, and the difficulty in construction, there is still no complete set of node design and...

Method used

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  • The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam
  • The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam
  • The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The joints between concrete filled steel tube columns and cast-in-place reinforced concrete beams are as follows: figure 1 Shown: the steel pipe in the steel tube concrete column 1 is drilled in the steel structure processing plant, and the threaded tie rod 4 and the steel casing 6 are threaded in advance, and the length of the threaded thread in the through tie rod 4 is greater than 100mm. Pass the center tie rod 4 through the upper hole of the steel tube concrete column 1, and put steel sleeves 6 on both ends. After the steel tube in the steel tube concrete column 1 is positioned, the longitudinal reinforcement 3 in the beam is threaded with the steel sleeve 6, and then the stirrup 5 is screwed together. Binding, the spacing is 50-80mm, after the steel bars in the beam are bound, pour the steel pipe and the concrete in the beam.

Embodiment 2

[0022] See when it is a side column node figure 2 , Other measures are the same as in Embodiment 1, except that the ring plate 7 is used at the end of the side column, and one end of the through-center tie rod 4 is welded to the ring plate to increase the anchoring performance.

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Abstract

The nodes and construction method for concrete filled steel tubular column and in-situ reinforced concrete beam belong to the technical fields of architectural structure. The nodes consist of the concrete filled steel tubular column (1) and in-situ reinforced concrete beam (2); the characteristics are: that the beam longitudinal reinforcement (3) connects the concrete filled steel tubular column (1) through feedthrough rod (4), the steel sleeve tube (6) sets on both ends of the feedthrough rod (4) and connects the beam longitudinal reinforcement (3) through threaded connection, and the beam node areas is densely covered with stirrups (5) with the spacing of 50-80mm. As for the side-column node, one end of the feedthrough rod (4) is welded on the ring plate (7). The invention does not require on-site welding process to address the connection issue of the reinforced concrete and the concrete filled steel tube. With simple construction, it can be widely used for the building structure field and has broad application prospects.

Description

technical field [0001] The invention relates to a joint construction method of a steel pipe concrete column and a cast-in-place reinforced concrete beam, which belongs to the technical field of building structures. Background technique [0002] Concrete-filled steel tube columns have been used in civil engineering for more than 80 years. my country has been studying the performance and application of steel-filled steel tube concrete columns since 1959. Steel tube concrete columns have the characteristics of high strength, superior performance, and easy construction, which can make traditional rods The advantages of the component structure system are further developed, especially in high-rise, long-span, heavy-load and earthquake-resistant buildings, which can better meet a series of requirements for design and construction. Currently, it is widely used in high-rise and super high-rise buildings in the construction field. . [0003] The effectiveness of the connection between ...

Claims

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Application Information

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IPC IPC(8): E04B1/58
Inventor 王冬雁林冰杭英胡凤琴宋富渊耿冬青
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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