CN107675808B - Giant diagonal bracing node structure of steel structure - Google Patents
Giant diagonal bracing node structure of steel structure Download PDFInfo
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- CN107675808B CN107675808B CN201711061000.2A CN201711061000A CN107675808B CN 107675808 B CN107675808 B CN 107675808B CN 201711061000 A CN201711061000 A CN 201711061000A CN 107675808 B CN107675808 B CN 107675808B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a giant diagonal bracing node structure of a steel structure, which comprises a steel tube concrete column, at least one diagonal bracing, a steel beam and a conversion structure which is arranged corresponding to the at least one diagonal bracing. The steel pipe concrete column is filled with concrete, at least one inclined strut is fixedly connected with the steel pipe concrete column, the steel beam is fixedly connected to the periphery of the steel pipe concrete column, and at least one conversion structure extends from the inside of the steel pipe concrete column to the outside of the steel pipe concrete column along the extending direction of the inclined strut and is coated on the outside of the inclined strut. The giant diagonal bracing node structure of the steel structure can be used for connecting the diagonal bracing and the steel pipe concrete column into a whole by utilizing the conversion structure, so that the structural strength of the connection position of the diagonal bracing and the steel pipe concrete column is enhanced, a large number of thickened steel plates are not required to be additionally arranged, and the overall manufacturing cost is effectively reduced. In addition, the conversion structure can be used for acting a transfer function between the diagonal brace and the steel tube concrete column, so that the transfer force between the diagonal brace and the steel tube concrete column is more definite and reliable.
Description
Technical Field
The invention relates to the technical field of building structures, in particular to a giant diagonal bracing node structure of a steel structure.
Background
Currently, in a connection node structure of a steel structure or a steel reinforced concrete, when a diagonal brace is connected with a steel member or a concrete column to form a connection node, a plurality of thickened steel plates are required to be arranged at the connection position of the diagonal brace and the steel member or the concrete column, and meanwhile, a plurality of stiffening plates are required to be arranged inside the steel member or the concrete column so as to strengthen the structural strength of the connection node region. However, with this arrangement, when the joint area is large, a large number of steel plates and a thickness of the steel plates are required to be thickened, so that the weight of the steel plates in the joint area is large, and the cost of the overall structure is greatly increased
Disclosure of Invention
In view of the above problems in the prior art, the present invention aims to provide a huge diagonal bracing node structure of a steel structure, which not only can reduce the arrangement of steel plates and reduce the thickness of the steel plates, but also can be suitable for steel structures with different sizes, and has strong applicability.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
the invention provides a giant diagonal bracing node structure of a steel structure, which comprises
A steel pipe concrete column;
at least one inclined strut, wherein each inclined strut is fixedly connected with the steel tube concrete column;
The steel beams are fixedly connected to the periphery of the concrete filled steel tube column; and
and the conversion structure is arranged corresponding to the at least one diagonal brace, extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the direction of the diagonal brace, and is coated outside the diagonal brace.
The steel tube concrete column is a straight tube column or an inclined tube column, and the steel tube concrete column is a round tube column or a square tube column.
In an embodiment of the present invention, the at least one diagonal brace includes at least one web, the conversion structure includes at least one conversion plate disposed corresponding to the at least one web, and each conversion plate extends from inside the steel pipe concrete column to outside the steel pipe concrete column along an extension direction of each web, and is fixedly connected to each web.
As an alternative embodiment, in an embodiment of the invention,
each inclined strut is rectangular steel, each inclined strut comprises two webs arranged in parallel and two flange plates connected between the two webs, each conversion structure comprises two conversion plates arranged in parallel, and each conversion plate extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of each web and is fixedly connected to each web;
A gap is formed between each flange plate and the outer wall surface of the concrete filled steel tube column, and the gap is 10-300 mm; or alternatively
The steel tube concrete column is characterized in that at least one diagonal brace is I-steel, each diagonal brace comprises two flange plates arranged in parallel and a web plate connected between the two flange plates, the conversion structure comprises conversion plates arranged corresponding to the web plate, and the conversion plates extend from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of the web plate and are fixedly connected to the web plate.
The thickness of the conversion plate is equal to or slightly larger than that of the web, and the width of the conversion plate is equal to or slightly larger than that of the web, so that the web is completely covered in the width direction, and force transmission is ensured.
Preferably, the width of the conversion plate may be greater than 10% to 20% of the width of the web itself.
As an alternative implementation manner, in an embodiment of the present invention, each of the conversion plates includes a first connection portion, a second connection portion, and a third connection portion, where the first connection portion is located in the steel pipe concrete column and is fixedly connected to an inner wall surface of the steel pipe concrete column, the second connection portion is connected to the first connection portion, and the second connection portion extends from inside the steel pipe concrete column to outside the steel pipe concrete column and is fixedly connected to the steel beam; the third connecting part extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of the web plate and is coated on the outside of the web plate.
In an embodiment of the present invention, the first connecting portion includes a first vertical side and a first horizontal side vertically connected to the first vertical side, and the first vertical side is fixedly connected to an inner wall surface of the concrete filled steel tube column;
the second connecting portion comprises a second vertical side and a second horizontal side vertically connected with the second vertical side, the second horizontal side is connected with the first horizontal side, the second horizontal side is collinear with the first horizontal side, and the second vertical side is fixedly connected with the steel beam.
In an optional implementation manner, in an embodiment of the present invention, the first connection portion further includes a first connection edge parallel to the first horizontal edge, the second connection portion further includes a second connection edge parallel to the second vertical edge, the third connection portion includes a third connection edge and a fourth connection edge, the third connection edge is connected with the first connection edge, an arc transition is formed between the third connection edge and the first connection edge, and an included angle is formed between the fourth connection edge and the second connection edge.
As an optional implementation manner, in an embodiment of the present invention, the number of the conversion structures is two, namely a first conversion structure and a second conversion structure, the number of the diagonal braces is two, namely a first diagonal brace and a second diagonal brace, the first conversion structure is coated on the outer part of the first diagonal brace, and the second conversion structure is coated on the outer part of the second diagonal brace;
And the first conversion structure and the second conversion structure are connected with the concrete filled steel tube column along the vertical center direction of the concrete filled steel tube column to form a structure with a K-shaped section.
The steel beams are three, namely a first steel beam, a second steel beam and a third steel beam, the first steel beam, the second steel beam and the third steel beam are fixedly connected to the outer wall surface of the steel tube concrete column, and the first steel beam and the third steel beam are symmetrically arranged relative to the second steel beam;
the first steel beam penetrates through the first inclined strut, and the third steel beam penetrates through the second inclined strut.
In an embodiment of the present invention, the connection point between the at least one diagonal brace and the steel pipe concrete column and the connection point between the steel beam and the steel pipe concrete column form a connection node area, the giant diagonal brace node structure of the steel structure further includes a plurality of first pegs and second pegs located in the connection node area, the plurality of first pegs are fixed on the inner wall of the steel pipe concrete column, and the plurality of second pegs are fixed on the conversion structure.
Preferably, the plurality of second pegs are fixedly arranged on two conversion plates of the conversion structure. The first pegs and the second pegs are uniformly distributed in the connecting node area to form an approximately inverted Y-shaped structure.
In an embodiment of the present invention, a plurality of transverse stiffening ring plates are disposed in the steel tube concrete column corresponding to the connection node area, the plurality of transverse stiffening ring plates are arranged at intervals along the height extending direction of the steel tube concrete column, and a part of the conversion structure located in the steel tube concrete column passes through a part of the transverse stiffening ring plates.
And each transverse stiffening ring plate is coaxially arranged with the concrete filled steel tube column, and the thickness of each transverse stiffening ring plate is smaller than or equal to that of the conversion plate.
The steel tube concrete column comprises a steel tube concrete column body, wherein the steel tube concrete column body is characterized in that the steel tube concrete column body comprises a steel tube concrete column, the steel tube concrete column body comprises a hollow ring portion and a reinforcing portion, a plurality of vertical stiffening plates are arranged in the steel tube concrete column body, each vertical stiffening plate is perpendicular to the steel tube concrete column body, each vertical stiffening plate extends from the bottom of the steel tube concrete column body to the top of the steel tube concrete column body, the reinforcing portion of each steel tube concrete column body is fixedly arranged in a penetrating mode, and the width of each vertical stiffening plate is equal to that of the reinforcing portion of the steel tube concrete column body.
Preferably, the number of the vertical stiffening plates is 4, and the vertical stiffening plates are respectively and fixedly arranged on the reinforcing parts of the transverse stiffening ring plates in a penetrating mode.
The giant diagonal bracing node structure of the steel structure further comprises a plurality of first steel bars, each first steel bar is arranged inside the steel tube concrete column and extends from the bottom of the steel tube concrete column to the top of the steel tube concrete column, and each first steel bar penetrates through the annular hollow part of each transverse reinforcing annular plate and is arranged in an annular arrangement along the edge of the annular hollow part.
Each reinforcing part of the transverse stiffening annular plate is provided with a plurality of pressure relief holes, the pressure relief holes are arranged in an annular mode along the center of the transverse stiffening annular plate, each pressure relief hole is internally provided with a second reinforcing steel bar in a penetrating mode, and each second reinforcing steel bar extends from the bottom of the steel tube concrete column to the top.
Preferably, the pressure relief hole is a round hole, and the aperture of the pressure relief hole is 40-60 mm.
Further, still be equipped with a plurality of third reinforcing bars and a plurality of compound spiral stirrups in the annular cavity, each the third reinforcing bar is all followed the bottom of steel core concrete column extends the setting to the top, a plurality of compound spiral stirrups all hoop is located the outside of a plurality of third reinforcing bars, just a plurality of compound spiral stirrups all follow the high extending direction of third reinforcing bar interval arrangement in proper order sets up.
Further, the plurality of transverse stiffening annular plates comprise a first transverse stiffening annular plate and a plurality of second transverse stiffening annular plates, the first transverse stiffening annular plates are arranged at the connection position of the outer wall surface of the steel tube concrete column and the conversion structure, the plurality of second transverse stiffening annular plates are arranged at the connection position of the inner wall surface of the steel tube concrete column and the conversion structure, two adjacent second transverse stiffening annular plates are arranged at equal intervals, and the distance between the second transverse stiffening annular plates positioned at the top to the first transverse stiffening annular plates is greater than the distance between the two adjacent second transverse stiffening annular plates.
As an alternative implementation manner, in the embodiment of the present invention, each of the at least one diagonal braces is a rectangular diagonal brace, and the cladding length of the conversion structure in the length extension direction of the diagonal brace is 1/4 to 4/5 of the length of the diagonal brace itself.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the giant diagonal bracing node structure of the steel structure, the conversion structure corresponding to the diagonal bracing is arranged, the conversion structure extends from the inside of the steel pipe concrete column to the outside of the steel pipe concrete column along the extending direction of the diagonal bracing and is coated outside the diagonal bracing, so that the diagonal bracing and the steel pipe concrete column can be connected into a whole by utilizing the conversion structure, the structural strength of the connection position of the diagonal bracing and the steel pipe concrete column is enhanced, a large number of thickened steel plates are not required to be additionally arranged, and the overall manufacturing cost is effectively reduced. In addition, by adopting the arrangement mode, the transfer structure can be used for acting the transfer force between the diagonal bracing and the steel tube concrete column, so that the transfer force between the diagonal bracing and the steel tube concrete column is more definite and reliable.
In summary, the giant diagonal bracing node structure of the steel structure can effectively optimize the stress of the connecting node area between the diagonal bracing and the steel pipe concrete column, replace the existing design of adopting a large number of thickened steel plates, and effectively lighten the overall quality of the whole giant diagonal bracing node structure. Therefore, the overall structure cost of the giant diagonal bracing node structure of the steel structure is lower than that of the method of increasing the steel plate and the thickness of the steel plate.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a giant diagonal bracing node structure of a steel structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is a plan view of FIG. 1;
fig. 4 is a schematic view of an internal structure of a concrete filled steel tubular column according to an embodiment of the present invention (a conversion structure is omitted);
FIG. 5 is a schematic diagram of the switching structure of FIG. 1;
fig. 6 is a schematic structural diagram of a giant diagonal bracing node structure of a steel structure according to a second embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a diagonal brace according to a second embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The following detailed description is made with reference to the accompanying drawings.
Example 1
Fig. 1 to fig. 4 are schematic structural views of a giant diagonal bracing node structure with a steel structure according to a first embodiment of the present application. The giant diagonal bracing node structure 100 of the steel structure provided by the embodiment of the application comprises a steel pipe concrete column 10, at least one diagonal bracing 20, at least one steel beam 30 and a conversion structure 40 corresponding to the at least one diagonal bracing 20. The concrete filled steel tube column 10 is filled with concrete (not shown), the at least one diagonal brace 20 is fixedly connected with the concrete filled steel tube column 10, the steel beam 30 is fixedly connected with the outer periphery of the concrete filled steel tube column 10, and the at least one conversion structure 40 extends from the inside of the concrete filled steel tube column 10 to the outside of the concrete filled steel tube column 10 along the extending direction of the diagonal brace 20 and is coated outside the diagonal brace 20.
In the present embodiment, the concrete filled steel tubular column 10 may be a circular steel tube, a square steel tube, or the like, and the concrete filled steel tubular column 10 may be a straight tube column or an inclined tube column, and the present application preferably employs a square steel tube or a straight tube column. That is, the concrete filled steel tubular column 10 includes a square steel tubular column and a hollow square cavity, and the square cavity of the concrete filled steel tubular column 10 is filled with the concrete.
In this embodiment, the at least one diagonal brace 20 is fixedly connected to the outer wall surface of the steel pipe concrete column 10, so as to increase the overall rigidity and the shock resistance of the giant diagonal brace node structure of the steel member. Specifically, the at least one diagonal brace 20 has a square columnar structure, and the center of the at least one diagonal brace 20 forms an included angle with the center line of the steel tube concrete column 10, that is, an inclined included angle a is formed between the center of the diagonal brace 20 and the vertical center of the steel tube concrete column 10, and the inclined included angle a is an acute angle. That is, the inclination angle A is 0 to 90 degrees.
Further, the connection between the at least one diagonal brace 20 and the concrete filled steel tube column 10 and the connection between the steel beam 30 and the concrete filled steel tube column 10 form a connection node area, and the at least one conversion structure 40 is coated on the at least one diagonal brace 20, that is, the at least one conversion structure 40 is also located in the connection node area. Specifically, the number of the conversion structures 40 is set corresponding to the diagonal braces 20, and when the diagonal braces 20 are one, the conversion structures 40 are one, and when the diagonal braces 20 are two, the conversion structures 40 are two.
Further, in order to enhance the structural strength at the connection node area, a plurality of transverse stiffening ring plates 12 are disposed inside the steel tube concrete column 10 corresponding to the connection node area, the plurality of transverse stiffening ring plates 12 are arranged at intervals along the height extending direction of the steel tube concrete column 10, and the part of the conversion structure 40 located in the steel tube concrete column 10 passes through part of the transverse stiffening ring plates 12. Specifically, the outer rings of the plurality of transverse stiffening ring plates 12 are welded on the inner wall of the steel tube concrete column 10, the plurality of transverse stiffening ring plates 12 are square ring plates matched with the shape of the steel tube concrete column 10, and the plurality of transverse stiffening ring plates 12 are coaxially arranged with the steel tube concrete column 10, namely, the centers of the transverse stiffening ring plates 12 are all arranged in a collinear manner.
By arranging the plurality of transverse stiffening ring plates 12 in the steel tube concrete column 10, not only the connection strength between the diagonal bracing and the steel beam 30 and the steel tube concrete column 10 can be reinforced by utilizing the plurality of transverse stiffening ring plates 12, but also the effect of transmitting force between the diagonal bracing and the steel tube concrete column 10 and between the steel beam 30 and the steel tube concrete column 10 can be achieved by utilizing the plurality of transverse stiffening ring plates 12.
In this embodiment, the plurality of transverse stiffening ring plates 12 includes a first transverse stiffening ring plate and a plurality of second transverse stiffening ring plates, the first transverse stiffening ring plate is disposed at a junction between the conversion structure 40 and an outer wall surface of the steel tube concrete column 10, the plurality of second transverse stiffening ring plates are disposed at a junction between the conversion structure 40 and an inner wall surface of the steel tube concrete column 10, and two adjacent second transverse stiffening ring plates are disposed at equal intervals, and a distance between a second transverse stiffening ring plate located at the top and the first transverse stiffening ring plate is greater than a distance between two adjacent second transverse stiffening ring plates. The arrangement of the second transverse stiffening ring plates is densely arranged at the position where the stress is concentrated, and the first transverse stiffening ring plates are arranged at the position where the stress is scattered in a larger mode, so that the connection strength of the position where the stress is concentrated can be effectively enhanced, the arrangement of the transverse stiffening ring plates 12 is reduced at the position where the stress is not concentrated, the use of steel plates of steel members is effectively reduced, and the weight of the integral members of the steel members is effectively reduced.
Further, the plurality of transverse stiffening ring plates 12 each include an annular hollow portion 12c and a reinforcing portion 12d, the giant diagonal bracing node structure 100 of the steel structure further includes a plurality of first reinforcing bars 50, and the plurality of first reinforcing bars 50 are all disposed inside the steel tube concrete column 10 and extend from the bottom of the steel tube concrete column 10 to the top of the steel tube concrete column 10. The first reinforcing bars 50 are all disposed in the annular hollow portion 12c of the transverse stiffening ring plates 12 in a penetrating manner, and are disposed in an annular arrangement along the edge of the annular hollow portion 12 c. That is, when the plurality of first reinforcing bars 50 are arranged, the plurality of first reinforcing bars 50 may be arranged in accordance with the shape of the annular hollow portion 12c of the transverse stiffening-ring plate 12 such that each first reinforcing bar 50 is disposed against the edge of the annular hollow portion 12c of the transverse stiffening-ring plate 12, and then the concrete is poured into the concrete-filled steel tube column 10, thereby completely fixing the reinforcing bars 50 within the annular hollow portion 12c of the transverse stiffening-ring plate 12 using the concrete.
The design that sets up these a plurality of first reinforcing bars 50 in steel core concrete column 10 is inside, can bear the power between part bracing and the steel core concrete column 10 with these a plurality of first reinforcing bars 50 to can effectively share the power that this conversion structure 40 born, and then can reduce conversion structure 40's overall thickness, thereby be favorable to reducing whole steel member's overall cost.
In addition, the design that all lean on the annular hollow portion 12c of establishing every first reinforcing bar 50 on this horizontal stiffening ring plate 12 is adopted, the location of this first reinforcing bar 50 in steel core concrete column 10 of being convenient for is fixed to need not to set up the stirrup additionally and fix this reinforcing bar 50, reduce the use of stirrup, effectively reduce construction material cost, also solved simultaneously and set up the difficult problem of construction of stirrup in steel core concrete column 10.
Further, a plurality of pressure relief holes 12e are formed in the reinforcing portion 12d of each transverse stiffening ring plate 12, the pressure relief holes 12e are arranged in an annular manner along the center of the transverse stiffening ring plate 12, second reinforcing steel bars 60 are arranged in each pressure relief hole 12e in a penetrating manner, and each second reinforcing steel bar extends from the bottom to the top of the steel tube concrete column 10. Preferably, the pressure relief holes 12e are all round holes, and the aperture of the pressure relief holes 12e is 40-60 mm, so as to facilitate the penetration of the second reinforcing steel bars 60 of 40-60 mm. It will be appreciated that in other embodiments, the diameter of the relief hole 12e may be set according to the diameter of the second rebar 60 being constructed.
The arrangement mode that the plurality of pressure relief holes 12e are formed in the reinforcing part 12d of the transverse stiffening ring plate 12 can provide a positioning foundation for the penetrating of the second reinforcing steel bars 60, and meanwhile, the pressure relief holes 12e can effectively improve the pouring compactness of concrete near the transverse stiffening ring plate 12 when concrete is poured into the steel pipe concrete column 10. In addition, the second reinforcing bars 60 are disposed in the pressure relief holes 12e, so that the anchoring effect between the transverse stiffening ring plate 12 and the concrete can be enhanced by effectively utilizing the second reinforcing bars 60.
Further, when the section of the steel tube concrete column 10 is larger, a plurality of third reinforcing bars 71 and a plurality of composite spiral stirrups 72 may be further disposed in the annular hollow portion 12c of the transverse stiffening ring plate 12, the plurality of third reinforcing bars 71 are disposed in an annular arrangement along the center of the annular hollow portion 12c, and each third reinforcing bar 71 extends from the bottom to the top of the steel tube concrete column 10. The plurality of composite spiral stirrups 72 are all hooped outside the plurality of third reinforcing bars 71, and the plurality of composite spiral stirrups 72 are all arranged at intervals in sequence along the height extending direction of the third reinforcing bars 71.
The third steel bars 71 are arranged in the steel tube concrete column 10 with a larger section, and the third steel bars 71 can be used as temperature bars, so that the third steel bars 71 can be utilized to effectively restrict the concrete in the steel tube concrete column 10; in addition, the binding effect of the third reinforcing bar 71 can be effectively enhanced by fixing the composite helical stirrup 72.
In this embodiment, the inside of the steel tube concrete column 10 is further provided with a plurality of vertical stiffening plates 13, each vertical stiffening plate 13 is perpendicular to each transverse stiffening ring plate 12, and each vertical stiffening plate 13 extends from the bottom of the steel tube concrete column 10 to the top of the steel tube concrete column 10 and is fixedly arranged on the reinforcing part 12d of each transverse stiffening ring plate 12 in a penetrating manner. That is, when the plurality of vertical stiffening plates 13 are disposed, the plurality of vertical stiffening plates 13 may be fixedly disposed inside the steel pipe concrete column 10, and then each of the transverse stiffening ring plates 12 is vertically welded to the vertical stiffening plate 13, thereby realizing the fixed connection between the transverse stiffening ring plates 12 and the vertical stiffening plate 13.
The mode of arranging the plurality of vertical stiffening plates 13 inside the steel tube concrete column 10 can utilize the opposite pulling action of the vertical stiffening plates 13 and the steel bars 50 arranged in the annular hollow part 12c, so that the problem that the outer wall of the steel tube concrete column 10 possibly bulges in the concrete filling process of the large-volume steel tube concrete column 10 is effectively solved, the deformation of the steel tube concrete column 10 is reduced, and the construction reliability and the construction quality of the steel tube concrete column 10 are effectively ensured.
Further, the number of the vertical stiffening plates 13 is 4, and the vertical stiffening plates are respectively and fixedly arranged on the reinforcing parts 12d of the transverse stiffening ring plates 12 in a penetrating manner. Preferably, each two vertical stiffening plates 13 are provided on the reinforcing portion 12d of the transverse stiffening ring plate 12 in the longitudinal direction in a penetrating manner, and the intervals between the two vertical stiffening plates 13 located in the same horizontal direction are equal.
Referring to fig. 1, 2 and 5, in the present embodiment, the at least one diagonal brace 20 includes at least one web, the conversion structure 40 includes at least one conversion plate corresponding to the at least one web, and each conversion plate extends from the inside of the concrete filled steel tube column 10 to the outside of the concrete filled steel tube column 10 along the extending direction of each web, and is fixedly connected to each web. Specifically, in order to achieve the force transmission effect on the diagonal braces 20, the number of the switching structures 40 corresponds to the number of the diagonal braces 20, that is, when the diagonal braces 20 are one, the switching structures 40 are one; when there are two of the diagonal braces 20, there are two of the transition structures 40, and so on. Preferably, in the present embodiment, there are two diagonal braces 20, namely, a first diagonal brace 21 and a second diagonal brace 22, and the two conversion structures 40 are also corresponding to each other, namely, a first conversion structure 41 and a second conversion structure 42, where the first conversion structure 41 is wrapped on the outer portion of the first diagonal brace 21, and the second conversion structure 42 is wrapped on the outer portion of the second diagonal brace 22. The first switching structure 41 and the second switching structure 42 are connected to the concrete filled steel tube column 10 in the vertical center direction of the concrete filled steel tube column 10, respectively, to form a structure having a cross-sectional shape of approximately "K".
It should be understood that in the present embodiment, the number of the steel beams 30 may be one, and when the number of the steel beams 30 is one, the first conversion structure 41 and the second conversion structure 42 are symmetrically disposed with respect to the steel beams 30, respectively. Of course, in other embodiments, the steel beam 30 may be multiple, such as two or three. When the number of the steel beams 30 is three, the three steel beams 30 are respectively a first steel beam, a second steel beam and a third steel beam, the first steel beam, the second steel beam and the third steel beam are fixedly connected on the outer wall surface of the steel tube concrete column 10, and the first steel beam and the third steel beam are symmetrically arranged relative to the second steel beam. Wherein the first steel beam may be disposed through the first diagonal strut 21 and the first conversion structure 41, and the third steel beam may be disposed through the second diagonal strut 22 and the second conversion structure 42. At this time, the distance between two adjacent transverse stiffening ring plates 12 located at the position where the first steel beam and the steel bar concrete column 10 are connected is equal to the width of the first steel beam inside the steel tube concrete column 10; similarly, the distance between two adjacent transverse stiffening ring plates 12 positioned at the position where the second steel beam is connected with the steel bar concrete column 10 is equal to the width of the second steel beam; the spacing between two adjacent transverse stiffening ring plates 12 at the position where the third steel beam is connected with the steel bar concrete column 10 is equal to the width of the third steel beam.
Further, in order to meet the force conversion requirement, the at least one diagonal brace 20 is a rectangular diagonal brace, and the wrapping length of the conversion structure 40 in the length extension direction of the diagonal brace 20 mainly depends on the acting force of the conversion structure 40 and the thickness of the conversion structure 40, for example, when the thickness of the conversion structure 40 is larger and the acting force is smaller, the wrapping length of the conversion structure 40 in the length extension direction of the diagonal brace 20 may be smaller; when the thickness of the conversion structure 40 is smaller and the applied force is larger, the wrapping length of the conversion structure 40 in the length extending direction of the diagonal brace 20 should be larger. Preferably, the wrapping length of the converting structure 40 in the length extension direction of the diagonal braces 20 is 1/4 to 4/5 of the length of the diagonal braces 20 themselves.
Further, since the diagonal braces 20 are rectangular diagonal braces, each diagonal brace 20 includes two webs 23 disposed in parallel and two flange plates 24 connected between the two webs 23, that is, the two webs 23 and the two flange plates 24 are connected to form a hollow rectangular structure. In order to realize the force transmission between the diagonal brace 20 and the steel tube concrete column 10, each of the conversion structures 40 includes two parallel conversion plates, and the two conversion plates respectively extend from the inside of the steel tube concrete column 10 to the outside of the steel tube concrete column 10 along the extending direction of the web 23 of the diagonal brace 20 corresponding to the two conversion plates and are fixedly connected to the web 23. Specifically, the two webs 23 of the diagonal brace 20 are a first web 23 and a second web 23, the two conversion plates of the conversion structure 40 are a first conversion plate and a second conversion plate, the first conversion plate is fixedly connected to the first web 23, and the second conversion plate 4 is fixedly connected to the second web 23.
By adopting the design mode that the first conversion plate and the second conversion plate of the conversion structure 40 are fixedly connected to the first web plate 23 and the second web plate 23 of the diagonal brace 20 respectively, the force between the first web plate 23 and the second web plate 23 and the steel tube concrete column 10 can be transmitted and converted by effectively utilizing the first conversion plate and the second conversion plate, so that the first web plate 23 and the second web plate 23 can still be connected with the steel tube concrete column 10 into a whole.
Further, the two flanges 24 are each spaced from the outer wall surface of the concrete filled steel tube column 10, that is, when the diagonal brace 20 is provided, the first web 23 and the second web 23 are welded to the outer wall surface of the concrete filled steel tube column 10, and the two flanges 24 are separated within a certain distance from the outer wall surface of the concrete filled steel tube column 10. In this way, mainly because the force of the diagonal brace 20 can be transferred to the first conversion plate and the second conversion plate via the first web plate 23 and the second web plate 23, at this time, the two flange plates 24 may not be in direct contact with the outer wall surface of the steel tube concrete column 10, so that the method of node connection area is effectively simplified, and the construction can be facilitated.
It should be appreciated that in order to achieve a force conversion, the thickness of the first and second conversion plates should be equal to or slightly greater than the thickness of the first and second webs 23, respectively, and the width of the first and second conversion plates should be equal to or slightly greater than the width of the first and second webs 23, respectively, so as to cover the first web 23 entirely or the second web 23 entirely in the width direction, ensuring a force transfer.
In the present embodiment, the gap between the two flange plates 24 and the outer wall surface of the concrete filled steel tubular column 10 may be 10mm to 300mm. That is, in the concrete construction, the two flange plates 24 may be in direct contact with the outer wall surface of the concrete filled steel tubular column 10. Preferably, the gap may be 200mm, so that it is convenient for a constructor to weld the first web 23 and the second web 23 to the concrete filled steel tube column 10 at the time of construction. It will be appreciated that in other embodiments, the gap may be 20mm, 50mm, 80mm, 100mm, 150mm, 250mm, 300mm, etc.
In this embodiment, each of the conversion plates includes a first connection portion 43a, a second connection portion 43b, and a third connection portion 43c, and the first connection portion 43a is located in the steel tube concrete column 10 and is fixedly connected to an inner wall surface of the steel tube concrete column 10. That is, the first connection portion 43a extends into the concrete filled steel tube column 10 and is fixedly connected to the rectangular inner wall surface of the concrete filled steel tube column 10, so that the conversion structure 40 is connected to the inside of the concrete filled steel tube column 10. Specifically, the first connection portion 43a includes a first vertical side 431 and a first horizontal side 432 perpendicularly connected to the first vertical side 431, and the first vertical side 431 is fixedly connected to the inner wall surface of the concrete filled steel tube column 10. In order to facilitate the positioning of the connection position of the first vertical edge 431 on the inner wall surface of the steel pipe concrete column 10, reduce the arrangement of welding seams and facilitate the construction, a first positioning groove may be provided on the inner wall surface of the steel pipe concrete column 10, and when the first vertical edge 431 extends into the steel pipe concrete column 10, the first vertical edge 431 may be engaged in the first positioning groove, thereby realizing the preliminary fixation of the first vertical edge 431 and the inner wall surface of the steel pipe concrete column 10.
Further, the second connection portion 43b is connected to the first connection portion 43a, and the second connection portion 43b extends from inside the concrete filled steel tubular column 10 to outside the concrete filled steel tubular column 10 and is fixedly connected to the steel beam 30. That is, the second connection portion 43b is protruded outside the concrete filled steel tube column 10 to be fixedly connected with the steel beam 30, so that force is transferred between the steel beam 30 and the concrete filled steel tube column 10, and the connection strength between the steel beam 30 and the concrete filled steel tube column 10 is reinforced. Specifically, the second connecting portion 43b includes a second vertical side 433 and a second horizontal side 434 vertically connected to the second vertical side 433, the second horizontal side 434 is connected to the first horizontal side 432, the second horizontal side 434 is collinear with the first horizontal side 432, and the second vertical side 433 is fixedly connected to the steel beam 30. Preferably, in order to facilitate the second vertical edge 433 to extend out of the concrete filled steel tubular column 10 to be fixedly connected with the steel beam 30, a second positioning groove is arranged at the connection position of the concrete filled steel tubular column 10 and the steel beam 30, and the second vertical edge 433 passes through the second positioning groove and is welded on the steel beam 30, so that the second vertical edge 433 is fixed with the steel beam 30 and the concrete filled steel tubular column 10. By adopting the arrangement mode, the connecting position between the second vertical edge 433 and the steel tube concrete column 10 can be positioned, and the second vertical edge 433 is not required to be welded on the steel tube concrete column 10, so that the generation of welding seams is reduced, and the construction is convenient.
Further, the third connecting portion 43c extends from the inside of the concrete filled steel tube column 10 to the outside of the concrete filled steel tube column 10 along the extending direction of the web 23, and is covered on the outside of the web 23. Specifically, the first connecting portion 43a further includes a first connecting edge 435 disposed parallel to the first horizontal edge 432, the second connecting portion 43b further includes a second connecting edge 436 disposed parallel to the second vertical edge 433, the third connecting portion 43c includes a third connecting edge 437 and a fourth connecting edge 438, the third connecting edge 437 is connected to the first connecting edge 435, and the third connecting edge 437 and the first connecting edge 435 are in a circular arc transition to reduce stress concentration therein. Further, since the third connecting edge 437 extends from the inside of the concrete filled steel tube column 10 to the outside of the concrete filled steel tube column 10, in order to facilitate positioning of the third connecting edge 437 and the concrete filled steel tube column 10, a third positioning groove is provided in the concrete filled steel tube column 10 corresponding to the third connecting edge 437, and the third connecting edge 437 extends from the third positioning groove to the outside of the concrete filled steel tube column 10 and is finally fixed to the web 23. Preferably, in order to ensure the connection tightness and reliability between the third connecting edge 437 and the web 23, the third connecting edge 437 is welded to the web 23 by welding.
Further, the fourth connecting edge 438 is connected to the second connecting edge 436 at an angle equal to the angle of inclination of the diagonal brace 20 with respect to the vertical center of the concrete filled steel tubular column 10. Specifically, the fourth connecting edge 438 is located outside the concrete filled steel tube column 10, and the fourth connecting edge 438 is welded to the web 23 of the diagonal brace 20 to achieve tightness of connection between the fourth connecting edge 438 and the web 23.
By adopting the mode, the first connecting part 43a, the second connecting part 43b and the third connecting part 43c of the conversion plate are respectively connected with the steel pipe concrete column 10, the steel beam 30 and the web 23 of the diagonal brace 20, so that the force between the diagonal brace 20 and the steel pipe concrete column 10 and the force between the steel beam 30 and the steel pipe concrete column 10 are transmitted, the number of the transverse reinforcing ring plates in the steel pipe concrete column 10 and the thickness of the transverse reinforcing ring plates are reduced, the overall weight of the whole steel member is effectively reduced, the construction process is effectively optimized, and the construction cost is reduced.
In this embodiment, the giant diagonal bracing node structure 100 of the steel structure further includes a plurality of first pegs 81 and second pegs 82 located in the connecting node area, the plurality of first pegs 81 are fixedly disposed on the inner wall of the steel tube concrete column 10, and the plurality of second pegs 82 are fixedly disposed on the conversion structure 40. Specifically, the first pegs 81 are fixedly disposed at the position of the first connecting portion 43a between the inner wall of the steel core concrete column 10 and the conversion plate, so as to enhance the structural strength at the position. The second bolts 82 are fixedly arranged at the position of the two conversion plates of the conversion structure 40 in the steel tube concrete column 10, so as to strengthen the structural strength at the position.
Preferably, the plurality of first pegs 81 and the plurality of second pegs 82 are evenly distributed in the area of the connection node to form an approximately inverted "Y" shaped structure. That is, the distribution shape of the first pegs 81 and the second pegs 82 in the connection node area is matched with the shape of the conversion plate in the concrete filled steel tubular column 10.
According to the giant diagonal bracing node structure 100 of the steel structure, the diagonal braces 20 are rectangular steel, and the number of the conversion plates of the conversion structure 40 corresponds to that of the webs of the rectangular diagonal braces, so that the webs and the steel pipe concrete column can be integrally connected by the conversion plates, the structural strength of the connection position of the diagonal braces and the steel pipe concrete column 10 can be enhanced, and force transmission between the rectangular diagonal braces and the steel pipe concrete column 10 can be effectively ensured.
Example two
Fig. 6 and fig. 7 are schematic structural diagrams of a giant diagonal bracing node structure 200 with a steel structure according to a second embodiment of the invention. The difference between the giant diagonal bracing node structure 200 with a steel structure provided in the second embodiment of the present invention and the giant diagonal bracing node structure 100 with a steel structure provided in the first embodiment of the present invention is that:
In this embodiment, the at least one diagonal brace 20 is an i-steel, and each diagonal brace 20 includes two flange plates 201 disposed in parallel and a web 202 connected between the two flange plates 201. At this time, since the web 202 is only one piece, the conversion structure 40 also includes only one conversion plate 401, and the conversion plate 401 extends from the inside of the concrete filled steel tube column 10 to the outside of the concrete filled steel tube column 10 along the extending direction of the web 202 and is fixedly connected to the web 202.
Further, in this embodiment, a positioning plate 101 is further disposed in the concrete filled steel tube column 10, the positioning plate 101 is disposed parallel to the vertical center line of the concrete filled steel tube column 10, a space is provided between the positioning plate 101 and the inner wall surface of the concrete filled steel tube column 10, and a portion of the conversion plate 401 extending into the concrete filled steel tube column 10 is fixedly connected to the positioning plate 101.
It should be appreciated that the diagonal brace 20 may also be an H-section steel or a C-section steel, etc.
The giant diagonal bracing node structure 200 with the steel structure provided by the second embodiment of the invention can be suitable for diagonal bracing 20 with different structures and shapes, and has wide application range.
According to the giant diagonal bracing node structure of the steel structure, the conversion structure is arranged corresponding to the diagonal bracing, extends from the inside of the steel pipe concrete column to the outside of the steel pipe concrete column along the extending direction of the diagonal bracing, and is coated outside the diagonal bracing, so that the diagonal bracing and the steel pipe concrete column can be connected into a whole by utilizing the conversion structure, the structural strength of the connection position of the diagonal bracing and the steel pipe concrete column is enhanced, a large number of thickened steel plates are not required to be additionally arranged, and the overall manufacturing cost is effectively reduced. In addition, by adopting the arrangement mode, the transfer structure can be used for acting the transfer force between the diagonal bracing and the steel tube concrete column, so that the transfer force between the diagonal bracing and the steel tube concrete column is more definite and reliable.
In summary, the giant diagonal bracing node structure of the steel structure can effectively optimize the stress of the connecting node area between the diagonal bracing and the steel pipe concrete column, replace the existing design of adopting a large number of thickened steel plates, and effectively lighten the overall quality of the whole giant diagonal bracing node structure. Therefore, the overall structure cost of the giant diagonal bracing node structure of the steel structure is lower than that of the method of increasing the steel plate and the thickness of the steel plate.
The above describes the giant diagonal bracing node structure of the steel structure disclosed in the embodiment of the present invention in detail, and specific examples are applied to describe the principle and implementation of the present invention, and the description of the above examples is only used to help understand the method and core idea of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (8)
1. The giant diagonal bracing node structure of the steel structure is characterized by comprising
The steel pipe concrete column is filled with concrete;
at least one inclined strut, wherein each inclined strut is fixedly connected with the steel tube concrete column;
At least one steel beam, each steel beam is fixedly connected to the periphery of the steel tube concrete column; and
the conversion structure is arranged corresponding to the at least one diagonal brace, extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the direction of the diagonal brace, and is partially coated on the outside of the diagonal brace;
each inclined strut is rectangular steel, each inclined strut comprises two webs arranged in parallel and two flange plates connected between the two webs, each conversion structure comprises two conversion plates arranged in parallel, and each conversion plate extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of each web and is fixedly connected to each web;
a gap is formed between each flange plate and the outer wall surface of the concrete filled steel tube column, and the gap is 10-300 mm; or (b)
The at least one inclined strut is I-steel, each inclined strut comprises two flange plates which are arranged in parallel and a web plate which is connected between the two flange plates, the conversion structure comprises conversion plates which are arranged corresponding to the web plate, and the conversion plates extend from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of the web plate and are fixedly connected to the web plate;
The steel structure comprises a steel pipe concrete column, at least one inclined strut, a steel beam, a conversion structure and a conversion structure, wherein the steel pipe concrete column is arranged at the center line of the steel pipe concrete column, the connection point of the steel beam and the steel pipe concrete column is formed into a connection node area, the giant inclined strut node structure of the steel structure further comprises a plurality of first pegs and second pegs which are positioned in the connection node area, the first pegs are fixedly arranged on the inner wall of the steel pipe concrete column, and the second pegs are fixedly arranged on the conversion structure.
2. The giant diagonal bracing node structure of a steel structure according to claim 1, wherein the at least one diagonal bracing comprises at least one web, the conversion structure comprises at least one conversion plate corresponding to the at least one web, and each conversion plate extends from inside the steel tube concrete column to outside the steel tube concrete column along the extending direction of each web and is fixedly connected to each web.
3. The huge diagonal bracing node structure of steel structure according to claim 1, wherein each of the conversion plates comprises a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion is located in the steel tube concrete column and fixedly connected with the inner wall surface of the steel tube concrete column, the second connecting portion is connected with the first connecting portion, and the second connecting portion extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column and is fixedly connected with the steel beam; the third connecting part extends from the inside of the steel tube concrete column to the outside of the steel tube concrete column along the extending direction of the web plate and is coated on the outside of the web plate.
4. The giant diagonal bracing node structure of the steel structure according to claim 3, wherein the first connecting part comprises a first vertical side and a first horizontal side vertically connected with the first vertical side, and the first vertical side is fixedly connected with the inner wall surface of the steel tube concrete column;
the second connecting portion comprises a second vertical side and a second horizontal side vertically connected with the second vertical side, the second horizontal side is connected with the first horizontal side, the second horizontal side is collinear with the first horizontal side, and the second vertical side is fixedly connected with the steel beam.
5. The huge diagonal bracing node structure of steel construction according to claim 4, wherein the first connecting portion further comprises a first connecting edge parallel to the first horizontal edge, the second connecting portion further comprises a second connecting edge parallel to the second vertical edge, the third connecting portion comprises a third connecting edge and a fourth connecting edge, the third connecting edge is connected with the first connecting edge, the third connecting edge is in arc transition with the first connecting edge, and the fourth connecting edge is in angle connection with the second connecting edge.
6. The huge diagonal bracing node structure of a steel structure according to any one of claims 1 to 4, wherein the number of the conversion structures is two, namely a first conversion structure and a second conversion structure, the number of the diagonal bracing is two, namely a first diagonal bracing and a second diagonal bracing, the first conversion structure is coated on the outer part of the first diagonal bracing, and the second conversion structure is coated on the outer part of the second diagonal bracing;
and the first conversion structure and the second conversion structure are connected with the concrete filled steel tube column along the vertical center direction of the concrete filled steel tube column to form a structure with a K-shaped section.
7. The giant diagonal bracing node structure of a steel structure according to claim 1, wherein a plurality of transverse stiffening ring plates are arranged in the steel tube concrete column corresponding to the connecting node area, the transverse stiffening ring plates are arranged at intervals along the height extending direction of the steel tube concrete column, and a part of the conversion structure in the steel tube concrete column passes through a part of the transverse stiffening ring plates.
8. The giant diagonal bracing node structure of the steel structure according to claim 1, wherein the at least one diagonal bracing is a rectangular diagonal bracing, and the cladding length of the conversion structure in the length extension direction of the diagonal bracing is 1/4-4/5 of the length of the diagonal bracing.
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| CN113585458A (en) * | 2021-05-25 | 2021-11-02 | 安徽中亚钢结构工程有限公司 | Cross-shaped section column steel frame beam column assembly type node with space inclined strut |
| CN115095081A (en) * | 2022-06-28 | 2022-09-23 | 中建三局集团有限公司 | Manufacturing method and structure of section steel column with arc-shaped plates and giant diagonal bracing |
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| JPH1144002A (en) * | 1997-07-25 | 1999-02-16 | Nkk Corp | Brace joining structure |
| CN100558996C (en) * | 2007-03-16 | 2009-11-11 | 北京城建设计研究总院有限责任公司 | Steel reinforced concrete frame-steel supporting structure section-changeable conversion node |
| CN101974942B (en) * | 2010-12-02 | 2012-05-30 | 北京建工集团有限责任公司 | Construction method of steel sleeve beam-column nodes |
| CN203049798U (en) * | 2013-03-01 | 2013-07-10 | 金天德 | Connecting node of combined concrete filled steel tubular column and steel support |
| CN203878774U (en) * | 2014-05-16 | 2014-10-15 | 中北大学 | Shearing resisting steel pipe concrete beam column joint connecting structure |
| CN207453133U (en) * | 2017-10-31 | 2018-06-05 | 深圳华森建筑与工程设计顾问有限公司 | A kind of huge diagonal brace node structure of steel construction |
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