High-ductility steel frame-herringbone support structure

Abstract

The utility model discloses a high ductility steel frame-herringbone bracing structure, which relates to the technical field of building steel structures, and comprises a stand column, a beam and a diagonal bracing, the beam comprises a beam web, a beam upper flange and a beam lower flange, the diagonal bracing is connected with the beam through a conversion structure, the conversion structure comprises a first web, a first transverse stiffening rib and a first horizontal stiffening rib, the first web is arranged at the bottom of the beam lower flange and vertically aligned with the beam web, the first horizontal stiffening ribs are fixed to the bottom of the first web, the first transverse stiffening ribs are symmetrically arranged on the two faces of the first web, the inclined struts are fixed to the bottoms of the first horizontal stiffening ribs, and holes are formed in the beam web. The conversion structure facilitates connection of the beam and the inclined strut, the hole is formed in the beam web, the bottom elevation of the hole is flush with the conversion structure, the situation that the shear deformation capacity of the beam at the joint is weakened due to the fact that the conversion structure is additionally arranged can be avoided, and a high-ductility connecting structure is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building steel structure, specifically relates to a high ductility steel frame - herringbone structure. BACKGROUND

[0002] Steel structure has higher bearing capacity, green environmental protection and fast construction and other advantages than concrete structure, and has a wide application in super high-rise and large-span building structure. Among them, steel frame as the most basic form of steel structure, when used in seismic area or area with larger wind load, usually needs to cooperate with support or shear wall to use to improve the lateral stiffness and bearing capacity of structure. Steel frame-herringbone is one of the commonly used structure forms, which not only has the advantages of steel frame-support structure, but also is widely used because it is convenient to open a hole between the support pairs.

[0003] China 16G519 "multiple, high-rise civil building steel structure node construction detail map" set gives the connection method of inclined (support) and steel beam, but all involves the inclined section from the steel beam, and the support is connected. According to the existing relevant method, at least the following two problems exist: one is that the inclined section from the beam is difficult to construct and the quality is difficult to guarantee; two is that the inclined section from the beam is transversely connected, which will limit the shear deformation capacity of steel beam, which is not conducive to the development of overall structure ductility. Therefore, it is urgent to give a connection method of inclined (support) and steel beam, and ensure that the structure has good ductility. UTILITY MODEL CONTENT

[0004] The utility model provides a high ductility steel frame-herringbone structure, a conversion structure is stretched out to connect the inclined support in the beam lower flange, and the hole with the same height as the conversion structure is set up on the beam web to avoid reducing the shear deformation capacity of the beam after the beam and the inclined support are connected.

[0005] The utility model is realized through the following technical schemes.

[0006] A high ductility steel frame-herringbone structure, comprising a stand, a beam and an inclined support, the beam is I-shaped or H-shaped, comprising a beam web, a beam upper flange and a beam lower flange, the inclined support is connected with the beam through a conversion structure, the conversion structure comprises a first web, a first transverse stiffening rib and a first horizontal stiffening rib, the first web is arranged at the bottom of the beam lower flange and is vertically aligned with the beam web, the first horizontal stiffening rib is fixed to the bottom of the first web, the first transverse stiffening rib is connected on the first web and the upper end thereof is connected with the beam lower flange, and the lower end thereof is connected with the first horizontal stiffening rib, the first transverse stiffening rib is arranged on both sides of the first web and is symmetrical, the inclined support is fixed with the bottom of the first horizontal stiffening rib, and the beam web is provided with a hole.

[0007] Further, the web of the beam is provided with a second transverse stiffening rib and a second horizontal stiffening rib to form a grid shape, the second transverse stiffening rib and the second horizontal stiffening rib are arranged symmetrically on the front and back surfaces of the web of the beam.

[0008] Further, the first transverse stiffening rib and the second transverse stiffening rib are vertically aligned, and there are four first transverse stiffening ribs arranged at the corresponding positions of the flanges of the diagonal bracing, and there is one second horizontal stiffening rib arranged on the upper opening of the web of the beam.

[0009] Further, the first web and the web of the beam are of the same thickness, the first transverse stiffening rib and the second transverse stiffening rib are of the same thickness, and the first horizontal stiffening rib and the second horizontal stiffening rib are of the same thickness.

[0010] Further, the thickness of the second transverse stiffening rib is not less than the intersection width of the flange of the diagonal bracing and the first horizontal stiffening rib, and is 2mm thicker than the intersection width, and the thickness of the second horizontal stiffening rib is not less than the thickness of the upper flange of the beam or the lower flange of the beam, and is 2mm thicker than the thickness of the upper flange of the beam or the lower flange of the beam.

[0011] Further, the bottom elevation of the opening is flush with the lower flange of the beam, the height of the opening is not more than half the height of the web of the beam, and the width of the opening is the same as the width between the two second transverse stiffening ribs on the inner side.

[0012] The beneficial effects of the utility model are:

[0013] The high ductility steel frame-diagonal bracing structure mentioned in the utility model is used for connecting the beam and the diagonal bracing, and the conversion structure is a vertical connecting structure, so that the beam and the diagonal bracing are conveniently connected.

[0014] The high ductility steel frame-diagonal bracing structure mentioned in the utility model is provided with an opening on the web of the beam, and the bottom elevation of the opening is flush with the conversion structure, so that the condition that the shear deformation capacity of the beam at the joint is weakened due to the increase of the conversion structure can be avoided, and a high ductility connecting structure is formed.

[0015] The high ductility steel frame-diagonal bracing structure mentioned in the utility model is provided with the stiffening ribs arranged on the beam, which can be a whole structure prefabricated in a factory, so that the speed of on-site construction is accelerated. DRAWINGS

[0016] Figure 1 The high ductility steel frame-diagonal bracing structure is shown in the figure.

[0017] Figure 2 The high ductility steel frame-diagonal bracing structure is shown in the figure. Figure 1 The A-A sectional view of the high ductility steel frame-diagonal bracing structure is shown in the figure.

[0018] Figure 3 The B-B sectional view of the high ductility steel frame-diagonal bracing structure is shown in the figure. Figure 1

[0019] Figure 4 The B-B sectional view of the high ductility steel frame-diagonal bracing structure is shown in the figure.​Figure 1 middle C-C profile view;

[0020] Figure 5 is an elevation view of the conversion structure;

[0021] Figure 6 is a perspective view of the conversion structure.

[0022] In the figure: column-1, beam-2, beam upper flange-211, beam lower flange-212, beam web-22, second transverse stiffening rib-23, second horizontal stiffening rib-24, opening-25, diagonal brace-3, diagonal brace flange-31, conversion structure-4, first transverse stiffening rib-41, first horizontal stiffening rib-42, first web-43. DETAILED DESCRIPTION

[0023] The following further describes the structure or technical terms used in the present application. These descriptions are merely illustrative of how the present application is implemented and do not constitute any limitation on the present application.

[0024] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "transverse", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the position or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "fixed", and the like should be broadly understood, for example, "fixed" can be fixedly connected, or can be detachably connected, or can be integral; can be directly connected, or indirectly connected through an intermediate medium; can be a communication between two elements or an interaction between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] As Figures 1-6As shown in the drawings, a high ductility steel frame-herring structure includes a column 1, a beam 2 and a diagonal brace 3, one end of the column 1 is fixed with the beam 2, the other end is fixed with the diagonal brace 3, the beam 2 is an I-shaped or H-shaped beam, including a beam web 22, an upper beam flange 211 and a lower beam flange 212, the diagonal brace 3 is connected with the beam 2 through a conversion structure 4, the conversion structure 4 includes a first web 43, a first transverse stiffener 41 and a first horizontal stiffener 42, the first web 43 is arranged at the bottom of the lower beam flange 212 and vertically aligned with the beam web 22, the first horizontal stiffener 42 is fixed at the bottom of the first web 43, the first transverse stiffener 41 is welded and fixed on the first web 43 and its upper end is welded and fixed with the lower beam flange 212, and its lower end is welded and fixed with the first horizontal stiffener 42, the first transverse stiffener 41 is arranged on both sides of the first web 43 and symmetrically, the diagonal brace 3 is fixed with the bottom of the first horizontal stiffener 42, and the beam web 22 is provided with a hole 25.

[0027] As shown in the drawings, Figure 5 and Figure 6 the beam web 22 is provided with a second transverse stiffener 23 and a second horizontal stiffener 24 to form a grid shape, and the second transverse stiffener 23 and the second horizontal stiffener 24 are arranged on both sides of the beam web 22 and symmetrically.

[0028] As shown in the drawings, Figure 5 the first transverse stiffener 41 is vertically aligned with the second transverse stiffener 23, contains four, and is arranged at the corresponding position of the diagonal brace flange 31, and the second horizontal stiffener 24 contains one and is arranged on the hole 25.

[0029] As shown in the drawings, Figure 6 the first web 43 is preferably the same thickness as the beam web 22, the first transverse stiffener 41 is preferably the same thickness as the second transverse stiffener 23, and the first horizontal stiffener 42 is preferably the same thickness as the second horizontal stiffener 24.

[0030] The thickness of the second transverse stiffener 23 should not be less than the intersection width of the diagonal brace flange 31 and the first horizontal stiffener 42, and is preferably 2mm thicker than the width, and the thickness of the second horizontal stiffener 24 should not be less than the thickness of the upper beam flange 211 or the lower beam flange 212, and is preferably 2mm thicker than the thickness of the upper beam flange 211 and the lower beam flange 212.

[0031] As shown in the drawings, Figure 5 the bottom elevation of the hole 25 is flush with the lower beam flange 212, the height of the hole 25 does not exceed half the height of the beam web 22, and the width of the hole 25 is the same as the width between the two second transverse stiffeners 23 on the inside. The hole 25 is arranged on the beam web 22, the bottom elevation of the hole 25 is flush with the conversion structure 4, which can avoid the situation that the shear deformation capacity of the beam at the joint is weakened due to the increase of the conversion structure 4, and a high ductility connection structure is formed.

[0032] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to make modifications to the technical solutions described in the foregoing embodiments, or make equivalent replacements to some of the technical features, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-ductility steel frame-A-frame structure, comprising columns, beams, and diagonal braces, wherein the beams are I-shaped or H-shaped, comprising a web, an upper flange, and a lower flange, characterized in that: The diagonal brace is connected to the beam via a conversion structure, which includes a first web, a first transverse stiffener, and a first horizontal stiffener. The first web is located at the bottom of the lower flange of the beam and is vertically aligned with the beam web. The first horizontal stiffener is fixed to the bottom of the first web. The first transverse stiffener is connected to the first web, with its upper end connected to the lower flange of the beam and its lower end connected to the first horizontal stiffener. The first transverse stiffener is provided on both sides of the first web and is symmetrical. The diagonal brace is fixed to the bottom of the first horizontal stiffener. The beam web has an opening.

2. The high-ductility steel frame-A-frame structure according to claim 1, characterized in that: The beam web is provided with a second transverse stiffener and a second horizontal stiffener to form a grid. The second transverse stiffener and the second horizontal stiffener are provided on the front and rear sides of the beam web and are symmetrical.

3. The high-ductility steel frame-A-frame structure according to claim 2, characterized in that: The first and second transverse stiffening ribs are vertically aligned, and there are four of them. They are set at the corresponding positions of the diagonal brace flanges. The second horizontal stiffening rib is set at the upper edge of the opening, and there is one of them.

4. The high-ductility steel frame-A-frame structure according to claim 2, characterized in that: The first web plate is the same thickness as the beam web plate, the first transverse stiffener is the same thickness as the second transverse stiffener, and the first horizontal stiffener is the same thickness as the second horizontal stiffener.

5. The high-ductility steel frame-A-frame structure according to claim 4, characterized in that: The thickness of the second transverse stiffener is not less than the width at which the diagonal brace flange intersects with the first horizontal stiffener, and is 2mm thicker than this width. The thickness of the second horizontal stiffener is not less than the thickness of the upper or lower flange of the beam, and is 2mm thicker than the upper or lower flange of the beam.

6. The high-ductility steel frame-A-frame structure according to claim 2, characterized in that: The bottom elevation of the opening is level with the lower flange of the beam, the height of the opening does not exceed half the height of the beam web, and the width of the opening is the same as the width between the two inner second transverse stiffening ribs.

Images