Steel pipe concrete flange combining beam with concrete fender

A technology of steel tube concrete and concrete, which is applied in the direction of bridges, bridge parts, bridge construction, etc., can solve the problems of inconvenient construction, complex structure, and undiscovered problems, and achieve the effects of convenient construction, high torsional rigidity, and reduced quantity

Active Publication Date: 2010-11-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the common steel-concrete composite section has the following problems: First, the flanges of hot-rolled I-beams, H-beams and welded I-beams will be locally unstable when they are under compression. To avoid local instability of the compressed flanges, Structural measures must be taken to improve the stress on the flange, which often leads to comp

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  • Steel pipe concrete flange combining beam with concrete fender
  • Steel pipe concrete flange combining beam with concrete fender
  • Steel pipe concrete flange combining beam with concrete fender

Examples

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Example Embodiment

[0032] Example 1

[0033] in figure 1 , figure 2 , image 3 In this embodiment, the concrete-filled steel tube flange composite beam with concrete flanges of this embodiment is composed of a rectangular steel tube concrete upper flange 1, a web 2, a lower flange 3, a stiffener 4, a concrete upper flange 5, and a stud 6. .

[0034] The lower wing plate 3 of this embodiment is a rectangular steel plate with a length of 4332 mm, a width of 200 mm, and a thickness of 14 mm. A web 2 with a thickness of 4 mm, a height of 306 mm, and a length of 4332 mm is welded to the length of the lower wing plate 3. 2 is perpendicular to the lower wing plate 3, the shape of the web 2 of this embodiment is a trapezoidal zigzag structure, and the horizontal section is a trapezoid zigzag curve in which a regular isosceles trapezoid and an inverted isosceles trapezoid are connected to each other, with the upper bottom of the regular isosceles trapezoid. The ratio to the bottom is 1:2.6, and the angle α ...

Example Embodiment

[0037] Example 2

[0038] The lower wing plate 3 of this embodiment is a rectangular steel plate with a length of 1452mm, a width of 200mm, and a thickness of 14mm. A web 2 with a thickness of 4mm, a height of 306mm, and a length of 1452mm is welded to the length of the lower wing plate 3. 2 is perpendicular to the lower wing plate 3, the shape of the web 2 of this embodiment is a trapezoidal zigzag structure, and the horizontal section is a trapezoidal zigzag curve in which a regular isosceles trapezoid and an inverted isosceles trapezoid are connected to each other. The ratio of the bottom to the bottom is 1:2.6, and the angle α between the hypotenuse and the bottom is 37° (wave height H 1 96mm, wavelength L 1 576mm). Stiffeners 4 are welded on the front and rear surfaces of the web 2. The stiffener 4 is perpendicular to the lower wing plate 3 and perpendicular to the web 2. The width of the stiffener 4 is 58mm and the thickness is 12mm. The spacing refers to the "Code for Desi...

Example Embodiment

[0039] Example 3

[0040] The lower wing plate 3 of this embodiment is a rectangular steel plate with a length of 1200mm, a width of 100mm, and a thickness of 10mm. A web 2 with a thickness of 3mm, a height of 200mm and a length of 1200mm is welded to the length of the lower wing plate 3. 2 is perpendicular to the lower wing plate 3, the shape of the web 2 of this embodiment is a trapezoidal zigzag structure, and the horizontal section is a trapezoidal zigzag curve in which a regular isosceles trapezoid and an inverted isosceles trapezoid are connected to each other. The ratio of the bottom to the bottom is 1:4, and the angle α between the hypotenuse and the bottom is 30° (wave height H 1 30mm, wavelength L 1 Is 173.2mm). The thickness of the stiffener 4 is 4 mm. The upper end of the web 2 is welded and connected with a rectangular steel tube concrete upper flange 1. The rectangular steel tube concrete upper flange 1 is made by pouring self-compacting concrete into rectangular s...

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Abstract

The invention relates to a steel pipe concrete flange combining beam with a concrete fender. A web is arranged in the length direction of a lower fender; the front surface and the back surface of the web are provided with stiffening ribs; the upper end of the web is provided with a steel pipe concrete upper flange formed by pouring self-compacting concrete in a steel pipe; and the upper end of a rectangular steel pipe concrete upper flange is provided with a concrete upper fender. The steel pipe of the rectangular steel pipe concrete upper flange is a rectangular steel pipe, and the cross section is in a rectangular annular shape. The web is in a trapezoidal waveform or sinusoidal waveform or planform shape. The invention can replace the traditional hot rolling I-steel and H-steel combining beam and a welding I-steel combining beam, has the advantages of convenient construction, light deadweight, large bearing capacity, high torsion rigidity, high ductility, and the like, is a combining structure which can fully exert the advantages of two materials of structural steel and high-performance concrete and has favorable application prospect in bridge and structure engineering.

Description

technical field [0001] The invention belongs to the technical field of steel bridges and steel-concrete composite structures, and in particular relates to a steel pipe concrete flange composite beam with concrete flanges. Background technique [0002] Traditional steel-concrete composite structures can be divided into two categories according to their mechanical characteristics, including steel-concrete composite beams mainly subjected to bending and steel-concrete composite structures mainly subjected to compression. Steel-concrete composite beams usually refer to the combination of ordinary steel beams with steel plate flanges and concrete slabs, and the two are connected as a whole by shear connectors. High force, high rigidity and other advantages. However, the common steel-concrete composite section has the following problems: First, the flanges of hot-rolled I-beams, H-beams and welded I-beams will be locally unstable when they are under compression. To avoid local in...

Claims

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Application Information

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IPC IPC(8): E01D19/00E04C3/293
Inventor 王春生翟晓亮徐岳王茜王建华任更锋王继明王晓平冯林军朱经纬段兰严新江李干
Owner CHANGAN UNIV
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