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Prestressed Connected Concrete Beam Circular Concrete Steel Tube Column Joints

A technology of concrete columns and concrete beams, which is applied in the direction of architecture and building construction, can solve problems such as unclear node calculation models, difficult construction, unclear force transmission, etc., achieves fast construction speed, improved performance, and broad application prospects Effect

Inactive Publication Date: 2017-06-16
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, 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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  • Prestressed Connected Concrete Beam Circular Concrete Steel Tube Column Joints
  • Prestressed Connected Concrete Beam Circular Concrete Steel Tube Column Joints
  • Prestressed Connected Concrete Beam Circular Concrete Steel Tube Column Joints

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The joint structure of prestressed concrete beams and circular concrete-filled steel tube columns is as follows: figure 1 Shown:

[0024] 1. Positioning of circular steel tube concrete

[0025] The steel pipes of the steel tube concrete columns (1) are drilled in strict accordance with the drawings in the steel structure processing plant; the ring plates (5) and channel steel (6) are welded by surrounding welding at the connecting beams of the circular steel tube concrete columns (1) ; The hoisting and positioning of the steel tube concrete column (1).

[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 position of the prestressed tendons given in the drawing, and weld them on the beam stirrups in turn The b...

Embodiment 2

[0039] See when it is a side column node figure 2 , other measures are the same as in embodiment 1, except that the prestressed tendon is welded on 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 prestressed tendon is stretched.

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Abstract

The invention relates to a prestressed connected concrete beam circular steel pipe concrete column joint, which belongs to the technical field of building structures. Including circular steel pipe concrete columns, reinforced concrete beams, prestressed tendons, ring plates, channel steel. Circular concrete-filled steel tube columns and reinforced concrete beams are cast-in-situ; circular steel-filled concrete columns and reinforced concrete beams are connected by prestressed tendons; holes are left at the joints between circular steel-filled steel tube concrete columns and reinforced concrete beams, and metal bellows are pre-embedded in the holes; A ring plate is welded at the connection between the circular steel pipe concrete and the beam, and there are corresponding holes on the ring plate; the channel steel is welded on the round steel pipe. The invention has fast construction speed, can effectively increase the shear bearing capacity of nodes, enhance its connection performance, and has broad application prospects.

Description

technical field [0001] The invention relates to a joint of a prestressed connected concrete beam circular steel pipe concrete column 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. Circular concrete filled steel tube has been valued by engineering circles because of its advantages of high bearing capacity, good plasticity and toughness, good economic effect and convenient construction. Circular concrete filled steel tubes can adapt to the needs of modern engineering structures to develop towards large spans, high towers, heavy loads and withstand harsh conditions, and meet the industrial requirements of modern construction technology, so they are being more and more widely used in single-story and multi-story industrial factory building columns , Equipment frame columns, trestle columns, piles, space structures, commercial plazas, multi-store...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/58
Inventor 马华王倩倩解咏平宋坤李振宝
Owner BEIJING UNIV OF TECH
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