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Composite joints of prestressed and ordinary steel bars connecting precast concrete beams with circular concrete-filled steel tube columns

A technology of reinforced concrete beams and prefabricated concrete, which is applied in the direction of architecture and building construction, and can solve problems such as unclear node calculation models, difficult construction, and unclear force transmission, so as to achieve fast construction speed, improved performance, and high application prospects broad effect

Active Publication Date: 2017-01-11
福建省凡澈建设发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many forms of existing CFST joints, most of which are complex in structure, difficult in construction, unclear in force transmission, and unclear in joint calculation models. Up to now, there is no relatively complete set of joint calculation theory and design methods in our country.

Method used

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  • Composite joints of prestressed and ordinary steel bars connecting precast concrete beams with circular concrete-filled steel tube columns
  • Composite joints of prestressed and ordinary steel bars connecting precast concrete beams with circular concrete-filled steel tube columns
  • Composite joints of prestressed and ordinary steel bars connecting precast concrete beams with circular concrete-filled steel tube columns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composite joint structure of precast concrete beam circular steel pipe concrete column connected by prestress and ordinary steel bar is as follows: figure 1 Shown:

[0025] 1. Manufacture of circular steel pipe concrete and reinforced concrete beams

[0026] The circular concrete-filled steel tube columns (1) and reinforced concrete beams (2) are fabricated in the factory in strict accordance with the relevant specifications and drawings, and 6 corresponding holes are reserved during prefabrication. A metal bellows (7) is pre-embedded in the channel of the section, and the ring plate (5) and the channel steel (6) are welded by surrounding welding at the connecting beam of the circular steel pipe concrete column (1).

[0027] 2. Assembly of beam-column joints

[0028] After the circular steel pipe concrete column (1) is positioned, the reinforced concrete beam (2) is hoisted and positioned by supporting.

[0029] 3. Prestressed tendons and ordinary steel bars pene...

Embodiment 2

[0036] See when it is a side column node figure 2 , other measures are the same as embodiment 1, except that at the end of the side column, the ring plate (5) can be used as a pressure bearing plate when the prestressed steel bar (3) is stretched, and the common steel bar (4) can also be welded on the This ring plate is used to meet the anchoring requirements of the post-passing steel bars.

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Abstract

The invention discloses a combination joint of a prefabricated concrete beam and a round concrete filled steel tubular column connected through pre-stressed steel bars and common steel bars, and belongs to the technical field of building structures. The round concrete filled steel tubular column and the reinforced concrete beam are both prefabricated; a hole channel is reserved in the cross section, corresponding to the round concrete filled steel tubular column, of the prefabricated concrete beam, and a metal corrugated pipe is pre-buried in the hole channel; annular plates are welded to the position, connected with the reinforced concrete beam, of the round concrete filled steel tubular column; channel steel is welded onto a round steel pipe; the common steel bars, the pre-stressed steel bars and tension pre-stressed steel bars penetrate through the metal corrugated pipe backwards; after tension is completed, hole channel grouting is completed within forty eight hours, and therefore the beam and the column form a whole. The combination joint is high in construction speed, the anti-shear bearing capacity of the joint can be effectively increased, the connecting performance of the joint is enhanced and the application prospects are wide.

Description

technical field [0001] The invention relates to a combined joint of precast concrete beam circular steel tube concrete column connected by prestress and ordinary steel bar, and belongs to the technical field of building structure. Background technique [0002] Concrete filled steel tubes have been used in construction projects for more than 100 years. Concrete filled steel tubes are valued by engineering circles because of their high bearing capacity, good plasticity and toughness, good economic effect and convenient construction. Concrete-filled steel tubes can adapt to the needs of modern engineering structures to develop toward large spans, high towers, heavy loads and withstand harsh conditions, and meet the industrial requirements of modern construction technology. Therefore, they are being more and more widely used in single-story and multi-story industrial factory buildings Good economic and architectural effects have been achieved in equipment frame columns, trestle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58
Inventor 李振宝王文静解咏平宋坤马华
Owner 福建省凡澈建设发展有限公司
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