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Unbonded Prestressed Connected Concrete Beam Square Rectangular Steel Tube Concrete Column Joints

A technology of concrete-filled steel tube columns and rectangular steel tubes, which is applied in the direction of construction and building construction, and achieves the effects of broad application prospects, guaranteed reliability, and huge economic benefits

Active Publication Date: 2016-06-01
湖州市双林工业园区开发有限公司
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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, 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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  • Unbonded Prestressed Connected Concrete Beam Square Rectangular Steel Tube Concrete Column Joints
  • Unbonded Prestressed Connected Concrete Beam Square Rectangular Steel Tube Concrete Column Joints
  • Unbonded Prestressed Connected Concrete Beam Square Rectangular Steel Tube Concrete Column Joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The joint structure of prestressed concrete beam square rectangular concrete filled steel tube column 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 ring plate (5) and channel steel are welded by surrounding welding at the cross-section of the connecting beams of the square and rectangular steel pipe concrete columns (1) (6); Square rectangular concrete filled steel tube column (1) hoisting and positioning.

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

[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 pos...

Embodiment 2

[0037] See when it is a side column node figure 2 , other measures are the same as in Example 1, except that the unbonded prestressed tendons are welded to the ring plate (5) at the end of the side column, and this ring plate can be used as a pressure bearing plate when the unbonded prestressed tendons are stretched .

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Abstract

The invention relates to a rectangular concrete-filled steel tubular column node of an unbonded pre-stressing connecting concrete beam, and belongs to the technical field of building structures. The rectangular concrete-filled steel tubular column node comprises a rectangular concrete-filled steel tubular column, a reinforced concrete beam, unbonded pre-stressing tendons, a steel plate and channel steel. The rectangular concrete-filled steel tubular column and the reinforced concrete beam are both formed in a cast-in-situ mode and connected through the unbonded pre-stressing tendons; a hole way is reserved in the connecting cross section of the rectangular concrete-filled steel tubular column and the reinforced concrete beam, and a metal corrugated pipe is embedded in the hole way; the steel plate is welded to the connecting cross section of the rectangular concrete-filled steel tubular column and the reinforced concrete beam, and a corresponding hole is formed in the steel plate; the channel steel is welded to a rectangular steel tube. The rectangular concrete-filled steel tubular column node is high in construction speed, the site welding technology is not needed, the reliability of node connection can be guaranteed, the node has the good shock resistance, the node connecting mode can be used for side column nodes in the structure and can also be used for middle column nodes, and the application prospect is wide.

Description

technical field [0001] The invention relates to a square rectangular steel pipe concrete column joint of a non-bonded prestressed concrete beam, belonging 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 columns, trestle columns, piles, space struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58
Inventor 周宏宇王倩倩解咏平宋坤李振宝
Owner 湖州市双林工业园区开发有限公司
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