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Assembled haunch support type top and bottom corner steel beam column connecting steel frame

A beam-column connection, steel frame technology, applied in complex mathematical operations, architecture, building structure, etc., can solve problems such as insufficient lateral stiffness and unsuitable reinforcement

Pending Publication Date: 2021-02-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the insufficient lateral stiffness of the semi-rigid steel frame and the inapplicability of the reinforcement of the semi-rigid steel frame in the prior art, the present invention proposes a steel frame with an assembled armpit type top and bottom angle steel beam-column connection

Method used

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  • Assembled haunch support type top and bottom corner steel beam column connecting steel frame
  • Assembled haunch support type top and bottom corner steel beam column connecting steel frame
  • Assembled haunch support type top and bottom corner steel beam column connecting steel frame

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Experimental program
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Effect test

Embodiment 1

[0075] Such as Figure 1-Figure 10 As shown, the assembled armpit type top and bottom angle steel beam-column connection steel frame provided in this embodiment includes two I-shaped steel columns that are welded by the column flange 1 and the column web 2, and the beam flange 3 and the beam The I-shaped steel beam, the top and bottom angle steel 5, the column stiffener 8, the beam stiffener 9, the gusset plate 10 and the diagonal support 11 formed by welding the web 4 are also equipped with the first bolt 6, the second bolt 7, The third bolt 12 and the fourth bolt 13 .

[0076] The two steel columns are respectively fixedly connected to the two ends of the steel beam through the top and bottom angle steel 5, and arm braces are arranged near the connection between the steel beam and the two steel columns, and each arm brace includes a diagonal support 11 and is fixedly arranged on The gusset plates 10 at both ends of the diagonal brace 11 are detachably connected to the steel...

Embodiment 2

[0110] Basically the same as Embodiment 1, the difference between this embodiment and Embodiment 1 is:

[0111] The yield mechanism of the steel frame with hip-braced top-bottom angle steel beam-column connection is that the steel beam yields before the beam-column connection and the hip brace.

[0112] Further, the axial tensile force on the armpit formed by the gusset plate 10 and the circular tube support 11 is obtained by the following formula:

[0113]

[0114] m C ≤M cy

[0115] In the formula: M by is the yield bearing capacity of the beam (take the yield stress σ of the steel y and section moment Z b product), M bp is the ultimate bearing capacity of the beam (take the yield stress σ of the steel y and the plastic section moment Z bp product), M c is the semi-rigid connection bending moment, M cy is the yield bearing capacity of the joint, P c is the axial tension on the armpit support, P ty is the yield bearing capacity of the haunch, W is the vertical ...

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Abstract

The invention discloses an assembled haunch support type top and bottom corner steel beam column connecting steel frame. The assembled haunch support type top and bottom corner steel beam column connecting steel frame comprises a steel beam and two steel columns perpendicular to the steel beam, wherein the two steel columns are fixedly connected with the two ends of the steel beam through top andbottom corner steel respectively; haunch supports are arranged at the positions close to the joints of the steel beam and the two steel columns, each haunch support comprises an inclined support and gusset plates fixedly arranged at the two ends of the inclined support, the two ends of each haunch support are detachably connected with the steel beam and the steel columns through the gusset platesrespectively, and the inclined supports are obliquely arranged relative to the axis of the steel beam and the axes of the steel columns; and the yield criterion of the steel frame is that beam columnconnection and the haunch supports yield before the steel beam, or the steel beam yields before the beam column connection and the haunch supports. Compared with a traditional semi-rigid connection reinforcing measure, the haunch supports are added into the semi-rigid steel frame, the advantages of a bending-resistant steel frame and a central supporting steel frame are combined, and the defects of an eccentric supporting steel frame are overcome. The energy dissipation capacity of the top and bottom corner steel beam column connection and the haunch supports is good, and therefore the energydissipation capacity of the whole frame is greatly improved.

Description

technical field [0001] The invention relates to the technical field of structural engineering steel structures, in particular to an assembled armpit type top and bottom angle steel beam-column connection steel frame. Background technique [0002] Our country is a country with frequent earthquakes, and the construction safety accidents caused by earthquakes have brought immeasurable losses to people. Semi-rigid steel frame is more and more favored by the construction industry because of its light weight, high strength, good seismic performance, economical and environmental protection, and short construction period. As the relevant theories of semi-rigid steel frames have become more and more mature in recent decades, semi-rigid connected steel frames have been used more and more widely in my country. Under the action of small earthquakes or small-order winds, the semi-rigid connected steel frame has sufficient lateral stiffness to resist lateral loads and maintains the conne...

Claims

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Application Information

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IPC IPC(8): E04B1/24E04B1/58G06F17/10
CPCE04B1/24E04B1/2403G06F17/10E04B2001/2418E04B2001/2415E04B2001/2445E04B2001/2448
Inventor 潘建荣王鹏陈磊王湛郭朱屹
Owner SOUTH CHINA UNIV OF TECH
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