Composite joints of square and rectangular concrete-filled steel tube columns in concrete beams connected by prestressed and ordinary steel bars

A technology of reinforced concrete beams and concrete-filled steel tube columns, which is applied in construction and building structures, etc., to achieve huge economic benefits, improve performance, and have broad application prospects

Inactive Publication Date: 2017-07-28
BEIJING UNIV OF TECH
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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, and the difficulties in construction and design of joints often become the bottleneck factor restricting the popularization and application of new and excellent structures

Method used

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  • Composite joints of square and rectangular concrete-filled steel tube columns in concrete beams connected by prestressed and ordinary steel bars
  • Composite joints of square and rectangular concrete-filled steel tube columns in concrete beams connected by prestressed and ordinary steel bars
  • Composite joints of square and rectangular concrete-filled steel tube columns in concrete beams connected by prestressed and ordinary steel bars

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The composite joint structure of prestressed and ordinary steel bars connecting concrete beams with square and rectangular steel pipe concrete columns is as follows: figure 1 Shown:

[0024] 1. Positioning of square and rectangular concrete filled steel pipes

[0025] The steel pipes of the square and rectangular concrete filled steel pipe columns (1) are drilled in strict accordance with the drawings in the steel structure processing plant; the steel plates (5) and channel steel ( 6); the hoisting and positioning of the square rectangular concrete filled steel tube column (1).

[0026] 2. Binding beam reinforcement skeleton and prestressed reinforcement

[0027] Support the beam bottom formwork, bind the beam steel skeleton strictly according to the design drawings; support one side of the side formwork, draw the metal bellows positioning line on the side formwork according to the position of the prestressed tendons given in the drawing, and weld them on the beam sti...

Embodiment 2

[0039] See when it is a side column node figure 2 , other measures are the same as embodiment 1, but at the end of the side column, the prestressed tendon is welded on the steel plate (5), and this ring plate can be used as the pressure bearing plate when the prestressed tendon is stretched.

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Abstract

The invention discloses a combination joint of a concrete beam and a rectangular 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 combination joint comprises the rectangular concrete filled steel tubular column, the reinforced concrete beam, pre-stressed steel bars, steel plates and channel steel. The rectangular concrete filled steel tubular column and the reinforced concrete beam are both cast in place; the rectangular concrete filled steel tubular column and the reinforced concrete beam are connected through the pre-stressed steel bars and the common steel bars; a hole channel is reserved in the cross section, connected with the reinforced concrete beam, of the rectangular concrete filled steel tubular column, and a metal corrugated pipe is pre-buried in the hole channel; the steel plates are welded to the cross section, connected with the reinforced concrete beam, of the rectangular concrete filled steel tubular column, and corresponding holes are formed in the steel plates; the channel steel is welded onto a rectangular steel pipe. 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 node of a square rectangular steel pipe concrete column of a concrete beam connected by prestress and ordinary steel bars, and belongs to the technical field of building structures. 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 column...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58
Inventor 马华王文静宋坤解咏平李振宝
Owner BEIJING UNIV OF TECH
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