Double-steel-pipe concrete beam-column joint with built-in FRP rib connecting device and mounting method

A technology of double steel tube concrete and connecting device, applied in the direction of columns, piers, pillars, etc., can solve the problems of high construction requirements on welding sites, large welding residual stress, poor quality control, etc., and achieve excellent tensile performance and fatigue resistance. Load capacity, enhance safety and bearing capacity, improve the effect of seismic energy dissipation capacity

Active Publication Date: 2020-10-02
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing connection methods are direct welding of steel pipes. The construction requirements of the welding site are high, and the quality is not easy to control. The

Method used

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  • Double-steel-pipe concrete beam-column joint with built-in FRP rib connecting device and mounting method
  • Double-steel-pipe concrete beam-column joint with built-in FRP rib connecting device and mounting method
  • Double-steel-pipe concrete beam-column joint with built-in FRP rib connecting device and mounting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, the double steel pipe concrete beam-column node with the built-in FRP tendon connection device of the present invention includes a double steel pipe column 1, an I-beam 2, a node connector 3, an inner support 4 and an outer ring plate 5.

[0046] Such as figure 2 As shown, the double steel pipe column 1 includes an inner steel pipe 11 and an outer steel pipe 12. Both the inner steel pipe and the outer steel pipe are round steel pipes, and the near node end of the outer steel pipe is vertically fixed with a connecting ear I13, that is, the bottom of the upper outer steel pipe and the lower outer steel pipe The outer surface of the top of the top is vertically fixed with connecting ears I13, and the number of connecting ears I13 is consistent with the number of I-beams 2 to be connected. In this embodiment, four I-beams 2 are connected as an example, and the four connecting ears Ⅰ13 are evenly distributed along the circumference; the bottom of...

Embodiment 2

[0062] Such as Figure 5 As shown, in order to reduce the material and weight, the middle of the inner support 4 can be hollowed out, and the parts with bolt holes at both ends are reserved. The inner support 4 includes round members 41 at both ends and connecting rods 42 in the middle. The components 41 are connected by connecting rods 42 , and bolt holes are uniformly distributed along the circumference of the circular component 41 .

[0063] Others are with embodiment 1.

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Abstract

The invention relates to the field of building structures, in particular to a double-steel-pipe concrete beam-column joint with a built-in FRP rib connecting device. The double-steel-pipe concrete beam-column joint comprises double steel pipe columns, an I-shaped beam, a joint connecting piece, an inner supporting piece and an outer ring plate. The double steel pipe columns comprise inner steel pipes and outer steel pipes. The joint connecting piece comprises a connecting inner pipe and a connecting outer sleeve disc, and the connecting inner pipe and the connecting outer sleeve disc are bothround steel pipes. The inner supporting piece is of a columnar structure, and bolt holes are evenly distributed in the two ends of the inner supporting piece along the circumference. The outer ring plate comprises a horizontal part and an annular part which are perpendicular to each other. The upper-layer steel pipe column and the lower-layer steel pipe column are connected through the joint connecting piece and the inner supporting piece, the two ends of the inner supporting piece are inserted into the upper inner steel pipe and the lower inner steel pipe correspondingly, and FRP ribs sequentially penetrate through the annular part, the outer steel pipes, the connecting inner pipe and the inner steel pipes and then are fixed into the bolt holes of the inner supporting piece. According tothe double-steel-pipe concrete beam-column joint, the excellent tensile property and fatigue load resistance of the FRP ribs are utilized, the anti-seismic energy dissipation capacity of the joint iseffectively improved, and the safety and bearing capacity of the structure are enhanced.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a double steel pipe concrete beam-column joint and an installation method for the joint. Background technique [0002] With the continuous advancement of social modernization, building structures continue to develop in a higher and larger direction. Due to their superior structural performance, steel tube concrete columns are widely used in high-rise and super high-rise buildings. Among them, double steel tube concrete columns are not only effective The self-weight of the structure is reduced, and it also has very good mechanical properties, and has great development potential and practicability. [0003] The joints of double-tube concrete columns are the key parts of column-to-column, beam-to-column connections, which are very important to the safety and structural performance of the entire structure. Most of the existing connection methods are direct welding of steel pipes. ...

Claims

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Application Information

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IPC IPC(8): E04B1/58E04B1/30E04C3/34E04C5/07
CPCE04B1/185E04B1/30E04C3/34E04C5/07E04B1/2403E04B2001/2478E04B2001/2415E04B2001/2418E04B2001/2451
Inventor 牟犇周万求金祖权刘文锋
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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