Shear force evaluation method for asymmetrical steel beam square steel pipe column nodes

An evaluation method and technology for square steel pipes, applied in the directions of instrumentation, design optimization/simulation, calculation, etc., can solve the problems of reduced universality and reliability, low eigenvalues ​​of load calculation structures, and unsuitable high and low beam-column joints.

Inactive Publication Date: 2018-11-23
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Abstract
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Problems solved by technology

However, this method is only applicable to equal-height beam-column joints, and is no longer applicable to high-low beam-column joints
And the structural eigenvalues ​​of the load calculation are low, which reduces the universality and reliability of the calculation

Method used

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  • Shear force evaluation method for asymmetrical steel beam square steel pipe column nodes
  • Shear force evaluation method for asymmetrical steel beam square steel pipe column nodes
  • Shear force evaluation method for asymmetrical steel beam square steel pipe column nodes

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Embodiment

[0073] Such as Figure 1-4 As shown, a certain high and low steel girder square concrete filled steel pipe column joint shear force evaluation method of the present invention comprises the following steps:

[0074] Step 1: Preset the geometric dimensions of the joints of the high and low steel girder square concrete filled steel pipe columns, the type of steel used and the grade of concrete. The size of the steel pipe concrete column is 300×300×13 (unit is mm, the same below), the size of the high beam 4 is 600×200×11×17, the size of the low beam 5 is 550×200×10×16, and the strength of the steel pipe 3 s σ y 350N / mm 2 , Compressive strength of filled concrete ( c σ B ) is 27.5N / mm 2 , the standard value of the compressive strength of the filled concrete f ck 38.5N / mm 2 , steel pipe 3-wall cross-sectional area A s = s D. 2 - c D. 2 =90000-75076=14924, concrete section area A c = c D. 2 =75076, the axial pressure on steel pipe 3 is 3000kN.

[0075] Step 2, known,...

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Abstract

The invention discloses a shear force evaluation method for steel beam steel pipe column nodes, in particular a shear force evaluation method for asymmetrical steel beam square steel pipe column nodes. The evaluation method comprises the following steps: (1) presetting the geometrical dimensions of the high and low steel beam square steel pipe column nodes, the type of steel used and the grade ofconcrete; (2) calculating the side length of a concrete core zone and the cross section area of a steel pipe web; 3) determining the shear force of a steel pipe; (4) determining the ultimate compressive bearing capacity of the concrete in the core zone; and (5) superimposing the bearing capacities of a steel pipe column and the concrete in the core zone to obtain the shear force of the core zone of the nodes. The method solves the problem of shear force evaluation of the asymmetrical steel beam square steel pipe column nodes, fills the gap in the calculation method of the shear force of this kind of nodes, can be used as a reference for practical engineering design, and is wider in application and more universal.

Description

technical field [0001] The invention relates to a method for evaluating the joint shear force of a steel beam steel pipe column, in particular to a method for evaluating the shear force of an asymmetrical steel beam square steel pipe column joint. Background technique [0002] Concrete-filled steel tube structure refers to the components filled with concrete in steel tubes, including solid and hollow concrete-filled steel tube components, and the cross-section can be circular, rectangular, and polygonal, referred to as CSFT components. In the concrete-filled steel tube structure, the beam-column joints often adopt the high-low steel beam concrete-filled steel column joints. The node is composed of I-shaped steel beams, square concrete-filled steel tube columns, and externally reinforced ring plates or internal partitions. It has high bearing capacity, good ductility, and superior seismic performance. Combining steel and concrete, the confinement effect of the steel pipe on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 牟犇杨兆源张春巍乔崎云胡红松贾良玖赵斐
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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