CN114351859B - Connection structure of embedded steel support frame conversion column and beam column connection node - Google Patents
Connection structure of embedded steel support frame conversion column and beam column connection node Download PDFInfo
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- CN114351859B CN114351859B CN202210109406.8A CN202210109406A CN114351859B CN 114351859 B CN114351859 B CN 114351859B CN 202210109406 A CN202210109406 A CN 202210109406A CN 114351859 B CN114351859 B CN 114351859B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 170
- 239000010959 steel Substances 0.000 title claims abstract description 170
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 87
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 210000000988 bone and bone Anatomy 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000010008 shearing Methods 0.000 description 11
- 239000004567 concrete Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
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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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
-
- 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
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The application discloses a connection structure of a conversion column of an embedded steel support frame and a beam column connection node, relates to the technical field of structural engineering, and solves the problem that the connection structure of the conversion column of the embedded steel support frame in a building structure is insufficient in bearing capacity. The embedded steel support frame conversion column connecting structure is used for connecting the first column body and the second column body in a staggered mode, the embedded steel support frame conversion column connecting structure comprises a support frame and cross diagonal braces, wherein the cross diagonal braces are located in the support frame, each cross diagonal brace comprises a plurality of diagonal braces which are arranged in a crossed mode, and two ends of each diagonal brace are connected with the support frame. The application is used for building structures.
Description
Technical Field
The application relates to the technical field of structural engineering, in particular to a conversion column connecting structure of an embedded steel support frame and a beam column connecting node.
Background
The conversion column connecting structure is applied to a high-rise building structure with a conversion layer, and the conversion column connecting structure has the advantages of less concrete material, low manufacturing cost and small dead weight, and can fully utilize the space of the high-rise building of the conversion layer. As a result, the conversion post connection structure is increasingly applied to existing building structures.
However, in the use of the switching column connecting structure, the axial force of the upper column is transmitted to the lower column through the switching column connecting structure, so that the switching column connecting structure is stressed in a complex manner and bears larger pressure and bending moment, in particular to bear larger shearing force. Particularly in high-rise and super-high-rise buildings, the upper floors of the conversion column connecting structure are more, and the requirements of the bearing capacity are difficult to meet under the condition that the section of the conversion column connecting structure is limited, so that the conversion column connecting structure forms weak parts under the action of gravity, wind and earthquake, particularly the shear damage of a concrete structure is brittle failure, no obvious deformation occurs after the concrete structure is stressed, the concrete structure is suddenly damaged, and great potential safety hazards exist.
Disclosure of Invention
The embodiment of the application provides a conversion column connecting structure with an embedded steel support frame and a beam column connecting node, which improve the bearing capacity of the conversion column connecting structure, particularly the shearing bearing capacity, improve the ductility of the conversion column connecting structure and avoid brittle failure.
In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme:
in one aspect, an embodiment of the application provides a connection structure of a conversion column of an embedded steel support frame, which is used for connecting a first column body and a second column body in a staggered manner.
The embodiment of the application provides a connecting structure of a conversion column of an embedded steel support frame, which can be used for connecting a first column body and a second column body in a staggered manner. The embedded steel support frame conversion column connecting structure adopts a support frame, the support frame can be called an embedded steel support frame, the embedded steel support frame has a certain bearing capacity of shearing resistance and the like, and cross diagonal braces are arranged in the embedded steel support frame, so that the cross diagonal braces can form powerful support for the embedded steel support frame. Because the cross bracing is formed by a plurality of bracing, the bracing can form the support along embedded steel braced frame's different directions, in this case, this embedded steel braced frame converting post connection structure atress is more even, and the structural integrity is better. The embedded steel support frame can be arranged in the concrete overlap block, and the ductility of the overlap block embedded with the steel support frame is much better than that of the original concrete overlap block, so that brittle failure is avoided. The structural stress performance is improved. And the strength of the conversion column connecting structure can meet the load requirement of an upper building, so that the section of the conversion column connecting structure is not required to be large, and the building space can be utilized to the maximum extent.
Further, the plurality of diagonal braces includes a first diagonal brace and a second diagonal brace. Wherein the first diagonal brace is disposed along a diagonal of the support frame. The second diagonal bracing is arranged along the other diagonal line of the supporting frame and is in cross connection with the first diagonal bracing.
Further, the included angle between the first inclined strut and the second inclined strut is 60-120 degrees.
Further, the first diagonal bracing comprises a first connecting section and a second connecting section, and the first connecting section and the second connecting section are respectively positioned at two sides of the second diagonal bracing and are connected with the second diagonal bracing.
Further, the first connecting section comprises a connecting section body and a connecting plate, and the second connecting section is identical to the first connecting section in structure. Wherein, the linkage segment body and second bracing are I-steel. One end of the connecting plate is connected with the connecting body, and the other end of the connecting plate is connected with the second diagonal bracing.
Further, the embedded steel support frame conversion column connecting structure further comprises a bolt, and at least one bolt is arranged on the flange of the connecting section body.
Further, the support frame includes: the device comprises a first support, a second support, a third support and a fourth support, wherein the first support is used for being connected with a first column. The third support is used for being connected with the second column. The first support, the second support, the third support and the fourth support are connected end to end in sequence to form a support frame.
Further, the embedded steel support frame conversion column connection structure is embedded in the splicing block, and the splicing block is of a reinforced concrete structure.
On the other hand, the embodiment of the application also provides a beam column connecting node, which comprises a beam part, a first column part, a second column part and the embedded steel support frame conversion column connecting structure in any technical scheme. Wherein the embedded steel support frame conversion post connection structure has opposite first and second sides, and opposite third and fourth sides. The first column body part and the second column body part are respectively positioned on the first side and the second side of the embedded steel support frame conversion column connecting structure, and the first column body part and the second column body part are connected in a staggered mode through the embedded steel support frame conversion column connecting structure. And one part of the cross beam is arranged on at least one of the third side and the fourth side of the embedded steel support frame conversion column connecting structure and is connected with the embedded steel support frame conversion column connecting structure.
The beam-column connection node provided by the embodiment of the application can obtain the same technical effects as the embedded steel support frame conversion column connection structure provided by the embodiment, and is not repeated here.
Further, the embedded steel support frame conversion post connection structure comprises a support frame, wherein the support frame comprises a first support, a second support, a third support and a fourth support which are connected end to end in sequence. The first column includes a first steel rib and a plurality of first longitudinal bars disposed around the first steel rib. The second column part comprises a second steel rib and a plurality of second longitudinal steel bars arranged around the second steel rib. Wherein, first steel skeleton links to each other with first support, and the second steel skeleton links to each other with the second support, and a plurality of first longitudinal steel bar part and a plurality of second longitudinal steel bar part all link to each other with embedded steel braced frame converting post connection structure.
The beam column connecting node further comprises a plurality of stirrups, a plurality of first longitudinal steel bars, a plurality of second longitudinal steel bars and a support frame form an edge member, and the stirrups are arranged around the edge member.
Drawings
FIG. 1 is a schematic view of a portion of a building structure according to an embodiment of the present application;
FIG. 2 is an enlarged schematic view of a beam-column connection node at A in FIG. 1 according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an application of a beam-column connection node according to an embodiment of the present application;
FIG. 4 is a schematic view of another beam-column connection node according to an embodiment of the present application;
fig. 5 is a schematic diagram of a beam-column connection node reinforcement layout according to an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of BB in FIG. 5, in accordance with an embodiment of the present application;
FIG. 7 is a schematic view of the CC in FIG. 5 according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a connection structure of a conversion column of an embedded steel support frame according to an embodiment of the present application;
FIG. 9 is a schematic view of the support frame of FIG. 8 according to an embodiment of the present application;
FIG. 10 is a schematic connection diagram of a first column, a second column and a switch column connection structure of an embedded steel support frame according to an embodiment of the present application;
FIG. 11 is a schematic view of the cross-bracing of FIG. 8 provided in an embodiment of the present application;
FIG. 12 is a schematic cross-sectional view of DD in FIG. 10 according to an embodiment of the present application;
FIG. 13 is another schematic illustration of FIG. 8 provided in accordance with an embodiment of the present application;
fig. 14 is an exploded view of the structure of fig. 11 according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, in the building structure, the first columns 100 and the second columns 200 are vertically alternately connected in the Y direction for forming Y-direction support for the entire building. In the X direction in fig. 1, a cross member 400 is horizontally provided at both sides of the junction between the first column 100 and the second column 200. In the horizontal plane, a floor may be disposed between two adjacent beams 400 in a direction perpendicular to the X direction. Finally, casting is performed to form the entire building structure, wherein beam-column connection nodes 1 are formed at crossing positions of a portion of the first column 100, a portion of the second column 200, and a portion of the beam 400.
As shown in fig. 2 (enlarged view at a in fig. 1), the beam-column connection node 1 mentioned above is exemplified below, for example, in some embodiments of the present application, the beam-column connection node 1 is in addition to the first column 100 part, the second column 200 part, and the cross beam 400 part mentioned above. An embedded steel support frame transition post connection structure 300 may also be included.
For functional or modeling reasons, the centerlines of the first column 100 and the second column 200 are offset, and the first column 100 is usually completely offset out of the range of the second column 200, and in order to ensure that the force flow of the first column 100 is transferred to the second column 200, the force flow is usually converted by the embedded steel support frame conversion column connection structure 300.
The embedded steel support frame conversion post connecting structure 300 has a first side 301 and a second side 302 opposite to each other along the Y direction, wherein the first side 301 is a side of the embedded steel support frame conversion post connecting structure 300 away from the ground, that is, an upper side of the embedded steel support frame conversion post connecting structure 300. The second side 302 is the side of the embedded steel support frame conversion post connection structure 300 that is closer to the ground, i.e., the lower side of the embedded steel support frame conversion post connection structure 300. The in-line steel support frame conversion post connection structure 300 further includes third and fourth sides 303, 304 that are opposite along the X-direction. The third side 303 is the left side of the embedded steel support frame conversion post connection structure 300, and the fourth side 304 is the right side of the embedded steel support frame conversion post connection structure 300. The first column body 100 and the second column body 200 are respectively positioned at a first side 301 and a second side 302 of the embedded steel support frame conversion column connecting structure 300, and the first column body 100 and the second column body 200 are connected in a staggered manner through the embedded steel support frame conversion column connecting structure 300. In this case, the first and second columns 100 and 200 may be disposed in the height direction Y of the building as shown in fig. 2, so that the entire building can be supported.
In addition, the cross member 400 is disposed at least one of the third side 303 and the fourth side 304 of the in-line steel support frame conversion post connection structure 300 along the horizontal direction X of the building, and is connected with the in-line steel support frame conversion post connection structure 300. In this case, the beam 400 may be used to carry a floor slab. The beam-column connection node 1 may further include cast-in-place concrete cast into the surface of the beam-column connection node 1 and the internal void of the beam-column connection node 1, thereby casting the first column 100, the second column 200, and the cross beam 400 as one body.
It should be noted that, as shown in fig. 2, the fact that the first column body 100 and the second column body 200 are connected in a staggered manner through the embedded steel support frame conversion column connection structure 300 means that the first column body 100 and the second column body 200 are arranged in a staggered manner in the X direction of the embedded steel support frame conversion column connection structure 300 shown in fig. 2, that is, the vertical projection of the first column body 100 on the first side surface and the vertical projection of the second column body 200 on the first side surface may not overlap or may partially overlap.
For example, in some embodiments of the present application, the use requirements are further illustrated, as shown in fig. 3, between the left side, the third side 303, and the upper and lower cross beams 400 connected to the embedded steel support frame conversion post connection structure 300, which enclose a first use area S1 shown in fig. 3. The second use area S2 shown in fig. 3 is defined between the cross member 400 of the upper layer, the first side 301 of the conversion column connection structure of the embedded steel support frame, the first column body 100, and the cross member 400 connected to the upper end of the first column body 100. As can be seen from fig. 3, the space of the second usage area S2 is increased by expanding a part of the space to the right through the embedded steel support frame conversion column connection structure 300 on the basis of the space of the first usage area S1, thereby increasing the space to the left of the first column 100.
Further, as shown in fig. 4, the cross beams 400 may be provided at least one of the third side 303 or the fourth side 304 of the in-line steel support frame conversion post connection structure 300 according to the above-described space requirement, for example, one or two cross beams 400 may be provided at the third side 303 and one or two cross beams 400 may be provided at the fourth side 304. One or two beams 400 may also be provided at the same time on the third side 303 or the fourth side 304. In this way, the beam 400 may be used in combination, so that parameters such as the usage space may be changed in the manner of fig. 3 or fig. 4.
In this case, in order to increase the strength of the connection of the first and second columns 100 and 200 with the embedded steel support frame conversion column connection structure 300, in some embodiments of the present application, as shown in fig. 5, the first column 100 may include a first steel rib 110 and a plurality of first longitudinal steel bars 120 disposed around the first steel rib 110, and as illustrated in fig. 6 (which is a schematic view of BB section in fig. 5), the first steel rib 110 may be a channel steel, a cross steel, a square steel, an i-steel, etc., and the i-steel will be exemplified as follows. The second column 200 includes a second steel rib 210 and a plurality of second longitudinal steel bars 220 disposed around the second steel rib 210, and as shown in fig. 7 (a schematic view of CC section in fig. 5), the second steel rib 210 may be a channel steel, a cross-shaped steel, a square steel, an i-steel, etc., and an i-steel is exemplified below.
As shown in fig. 5, the first steel rib 110 and the second steel rib 210 are connected to the embedded steel support frame conversion post connecting structure 300 by welding, and a portion of the plurality of first longitudinal steel bars 120 extends from the first side 301 to the second side 302 of the embedded steel support frame conversion post connecting structure 300, and finally overlaps the second side 302. A portion of the plurality of second longitudinal rebars 220 extend from the second side 302 of the embedded steel support frame transfer post attachment structure 300 to the first side 301 and finally overlap the first side 301. In other embodiments of the present application, a portion of the first longitudinal bar 120 may be welded to the first steel rib 110 and a portion of the second longitudinal bar 220 may be welded to the second steel rib 210 to ensure integrity. The first steel rib 110 is used for enhancing the bearing capacity of the first column 100 in the Y direction, and the first longitudinal steel bars 120 are used for resisting the bending moment effect generated by gravity load in the Y direction, bearing the tensile force, resisting the overturning moment effect generated by load in the horizontal X direction or earthquake, and the like. In addition, the second steel rib 210 functions with reference to the first steel rib 110, and the second longitudinal bar 220 functions with reference to the first longitudinal bar 120.
In addition, the beam-column connection node 1 may further include a plurality of stirrups 500 as shown in fig. 5, disposed around the plurality of first longitudinal bars 120, the plurality of second longitudinal bars 220, and the embedded steel support frame conversion column connection structure 300 in the X-direction. The cross beam 400 may include third longitudinal bars 410 disposed in the X-direction, and stirrups 500 disposed around the third longitudinal bars 410 in the upper and lower cross beams 400 of the embedded steel support frame conversion post connection structure 300 and the embedded steel support frame conversion post connection structure 300 in the Y-direction. The stirrup 500 may be a polygonal stirrup, a circular stirrup, a well-shaped stirrup, etc., and the specific shape of the stirrup 500 is not limited in the present application. Stirrup 500 may be attached to the longitudinal bars in the upper and lower columns and cross beam 400 by lashing, welding, or the like. The stirrup 500 is used for fixing the longitudinal steel bars in the column body and the embedded steel support frame conversion column connecting structure 300, increasing the binding force of concrete and preventing the longitudinal steel bars around the embedded steel support frame conversion column connecting structure 300 from buckling after being stressed.
In this way, the reinforcement cage formed by the first longitudinal bars 120, the second longitudinal bars 220 and the stirrups 500 can fix the embedded steel support frame conversion post connection structure 300 inside the reinforcement cage, and the first steel rib 110 and the second steel rib 210 are connected with the embedded steel support frame conversion post connection structure 300, in this case, the frame formed by the embedded steel support frame conversion post connection structure 300, the first steel rib 110, the second steel rib 210, the first longitudinal bars 120 and the second longitudinal bars 220 is firmer, so as to enhance the bearing capacity at the node in the building.
Because the first column body 100 and the second column body 200 are connected in a staggered manner, as shown in fig. 5, the connecting structure 300 of the embedded steel support frame conversion column is required to bear not only the bearing capacity of the upper side and the shearing resistance in the horizontal direction, but also the stress caused by the fact that the staggered connection line of the first column body 100 and the second column body 200 forms an oblique downward direction. In this case, the requirement for the middle embedded steel support frame conversion post connection structure 300 is higher, and it is necessary to ensure that it has not only a sufficient bearing capacity but also a sufficient shearing resistance, and also a capability of resisting oblique force.
For example, in some embodiments of the present application, as shown in fig. 8, the embedded steel support frame conversion post connection structure 300 may include a support frame 310 and a cross-diagonal brace 320, wherein the cross-diagonal brace 320 is positioned in the support frame 310, the cross-diagonal brace 320 includes a plurality of cross-positioned diagonal braces 3001, and each of the support frame 310 and the cross-diagonal brace 320 may be formed of a rod-shaped structure, a channel steel, a cross-shaped steel, a square steel, an i-steel, etc., and both ends of the diagonal braces 3001 are connected to the support frame 310.
As shown in fig. 8, since the support frame 310 may be a rectangular frame, it has a certain shearing resistance and bearing capacity, and the cross braces 320 may be provided in the support frame 310, so that the cross braces 320 may form a strong support for the support frame 310. Since the crossing diagonal braces 320 are formed of a plurality of diagonal braces 3001, the diagonal braces 3001 may form a support along the circumferential direction of the support frame 310, for example, two diagonal directions of the support frame 310. In this case, the embedded steel support frame conversion post connection structure 300 is more uniformly stressed and has better structural integrity.
The above-mentioned support frame 310 is illustrated below, for example, in some embodiments of the present application, the support frame 310 may be a rectangular frame or other polygonal frame, and the rectangular frame is illustrated below, and as shown in fig. 9, the support frame 310 includes a first support 311, a second support 312, a third support 313, and a fourth support 314 connected end to end. As shown in fig. 10, the first support 311 may be used to be welded to the first steel rib 110 in the first column 100. The third support 313 may be used to be welded to the second steel rib 210 in the second column 200, such that the above-mentioned offset connection is formed between the first steel rib 110 and the second steel rib 210.
As shown in fig. 8 and 10, the embedded steel support frame conversion post connection structure 300 is embedded within the overlap block 600. The overlap block 600 is a reinforced concrete structure. Longitudinal steel bars and stirrups should be arranged around the support frame 310 to form a restraining or building edge member of the internal profile steel, the edge member being arranged along the entire length of the overlap block 600.
The overlap block 600 with the support frame 310 embedded therein has a much better ductility than a concrete overlap block, avoiding brittle failure. The structural stress performance is improved. And because the strength of the embedded steel support frame conversion column connecting structure 300 can meet the load requirement of the upper building, the cross section of the embedded steel support frame conversion column connecting structure 300 does not need to be large, so that the building space can be utilized to the maximum extent.
In this case, the first steel rib and the first support 311 are welded into an integral structure, and the second steel rib 210 and the second support 312 are welded into an integral structure, so that the support frame 310 is connected with the first steel rib 110 and the second steel rib 210 into an integral structure, so that the whole embedded steel support frame conversion column connection structure 300 has higher stability. The joints of the first support 311, the second support 312, the third support 313 and the fourth support 314 can be fixed together by welding, and as the four corners of the rectangular frame are fixed by welding and the lengths of the opposite sides of the rectangular frame are equal, the stress along one of the opposite sides of the rectangular frame can be uniformly spread into the embedded steel support frame conversion post connecting structure 300, so that the stress is better. Namely, one pair of the sides is a first support 311 and a third support 313 in the X direction shown in fig. 10, and the other pair of the sides is a second support 312 and a fourth support 314 in the Y direction shown in fig. 10.
To further enhance the stability of the support frame 310, the plurality of diagonal braces 3001 (i.e., the cross diagonal braces 320) provided in the support frame 310 include a first diagonal brace 321 and a second diagonal brace 322 as shown in fig. 11. Wherein the first diagonal braces 321 are disposed along one diagonal line of the rectangular frame (a line connecting two diagonal angles of the support frame 310 as shown in fig. 10). The second diagonal braces 322 are disposed along the other diagonal line of the rectangular frame (the connection line of the other two diagonal lines of the support frame 310 shown in fig. 10), thereby forming a cross-connection of the second diagonal braces 322 with the first diagonal braces 321.
As shown in fig. 12 (DD cross-sectional view in fig. 10), taking an example in which the support frame 310 and the cross-braces 320 are each composed of i-steel, the cross-section of the support frame 310 and the cross-braces 320 after welding may be on a straight line L (in the direction of the dash-dot line shown in fig. 12). In this way, the first support 311, the third support 313, the first diagonal stay 321, and the second diagonal stay 322 can resist the force applied along the straight line L, and the shearing resistance is enhanced.
In this case, the first diagonal braces 321 and the second diagonal braces 322 of the cross diagonal brace 320 may divide the rectangular frame into four triangles (i.e., a, b, c, d as shown in fig. 13) as shown in fig. 13, and since the triangle structure has characteristics of stability, firmness, pressure resistance, etc., the triangles may be disposed at four main stress directions of the embedded steel support frame converting post connecting structure 300, i.e., at both sides of the X direction and at both sides of the Y direction. Thus, when the embedded steel support frame conversion post connection structure 300 is stressed, the four triangular structures can share the bearing capacity given by the superstructure or the shearing resistance in the horizontal direction, and the like.
The above-mentioned included angle between the first diagonal brace 321 and the second diagonal brace 322 is illustrated below, for example, in some embodiments of the present application, as shown in fig. 13, the included angle α between the first diagonal brace 321 and the second diagonal brace 322 along the X direction may be 60 ° -120 ° (i.e., the included angle β between the third support 313 and the first diagonal brace 321 within the same triangle b may be 30 ° -60 °). On both sides of the Y axis, when the included angle α between the first diagonal brace 321 and the second diagonal brace 322 is smaller than 60 °, although the length of the embedded steel support frame conversion post connection structure 300 in the X direction becomes long, the horizontal shearing resistance of the entire embedded steel support frame conversion post connection structure 300 becomes strong. However, the height of the embedded steel support frame conversion post connection structure 300 in the Y direction becomes smaller, the distance between the first and second posts 100 and 200 is shortened, and thus the overall bearing effect of the embedded steel support frame conversion post connection structure 300 in the Y direction becomes worse. The same applies when the angle α between the first diagonal strut 321 and the second diagonal strut 322 is greater than 120 °.
For example, the included angle α between the first diagonal brace 321 and the second diagonal brace 322 may be 60 °, 90 °, 120 °, etc. The bearing capacity of the embedded steel support frame conversion post connection structure 300, particularly the Y-direction shear bearing capacity, can be ensured.
In addition, the embedded steel support frame converting column connecting structure 300 is embedded in the overlap block 600, so as to ensure that no crack occurs in the overlap block 600 in the normal use and normal state, and the vertical shear force standard value flow of the normal use state of the overlap block 600 is extracted: and after the calculation is completed, the vertical shearing force standard value of the normal use state of the overlap block 600 is extracted, and the axial force standard value of the normal use state of the upper column of the overlap block 600-the vertical shearing force standard value of the normal use state of the embedded steel support frame conversion column connecting structure 300 can be taken.
The design value expression of the total bearing capacity of the embedded steel support frame conversion column connecting structure 300 and the splicing block 600 is as follows: r=rc+ra; wherein R is a total bearing capacity design value, rc is a bearing capacity design value of the overlap block 600, and Ra is a bearing capacity design value of the embedded steel support frame conversion column connection structure 300.
In the following, the first diagonal brace 321 mentioned above is illustrated, for example, in some embodiments of the present application, as shown in fig. 14, the first diagonal brace 321 may include a first connection segment 3211 and a second connection segment 3212, where the first connection segment 3211 and the second connection segment 3212 are located on both sides of the second diagonal brace 322, respectively, and are connected to the second diagonal brace 322. The first connection segment 3211 includes a connection segment body 3213 and a connection plate 3214, and the second connection segment 3212 has the same structure as the first connection segment 3211. One end of the connecting plate 3214 is connected to the connecting section body 3213, and the other end of the connecting plate 3214 is connected to the second diagonal brace 322.
In this case, the connecting section body 3213 and the second diagonal brace 322 may have structures such as i-steel or channel steel. For convenience of explanation, the following is exemplified by a i-steel structure. The I-steel is provided with a middle vertical web and upper and lower parallel flanges, wherein the flanges are perpendicular to the vertical web. Taking the second diagonal brace 322 as an example, one side of the i-steel may be surrounded by the upper flange, the lower flange and the vertical web to form a first groove 3221, and the other side may be surrounded by the other side to form a second groove 3222. Taking the first connection section 3211 as an example, a vertical web at one end of the connection section body 3213 and the connection plate 3214 may be in an integral structure, the connection plate 3214 may completely extend into the first groove 3221 of the second diagonal brace 322, a flange of the first connection section 3211 and a flange of the second diagonal brace 322 close to one side of the first connection section 3211 may be welded into an integral structure, and the connection plate 3214 may be welded into an integral structure with a groove wall of the first groove 3221. The second connecting section 3212 corresponding to the first connecting section 3211 is connected to the second diagonal stay 322 in the same manner.
In this way, since the connecting plate 3214 and the connecting section body 3213 are integrally constructed, and the connecting plate 3214 is welded in the first groove 3221 or the second groove 3222 on the second diagonal brace 322, when the connecting plate 3214 is stressed, force can be transferred to the connecting section body 3213, in this case, the connection between the first diagonal brace 321 and the second diagonal brace 322 is firmer and more stable.
In order to enhance the connection strength between the embedded steel support frame conversion post connection structure 300 and the concrete and improve the stress performance of the embedded steel support frame conversion post connection structure 300, the embedded steel support frame conversion post connection structure 300 may further include a peg, and at least one peg is provided on the flange of the connection section body 3213.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. A beam-column connection node, comprising:
a portion of the beam;
a first column portion;
a second column portion;
and an embedded steel support frame conversion post connection structure having first and second sides opposite in an up-down direction, and third and fourth sides opposite in a horizontal direction; the embedded steel braced frame converting post connection structure includes:
the first column body is partially positioned on the first side of the support frame, and the lower end of the first column body is connected with one end, close to the third side, of the support frame; the second column part is positioned on the second side of the supporting frame, and the upper end of the second column part is connected with one end, close to the fourth side, of the supporting frame; so that a part of the first column and a part of the second column are connected in a staggered manner in the horizontal direction; the cross beam is arranged on at least one of the third side and the fourth side of the support frame and is connected with the support frame;
the cross diagonal braces are positioned in the supporting frame and comprise a plurality of diagonal braces which are arranged in a crossing way, and two ends of each diagonal brace are connected with the supporting frame;
the support frame comprises a first support, a second support, a third support and a fourth support, wherein the first support is used for being connected with the first column, the third support is used for being connected with the second column, and the first support, the second support, the third support and the fourth support are connected end to end in sequence to form the support frame;
the first column body part comprises a first steel rib and a plurality of first longitudinal steel bars arranged around the first steel rib; the second column part comprises a second steel rib and a plurality of second longitudinal steel bars arranged around the second steel rib; the first steel bones are connected with the first supports, the second steel bones are connected with the second supports, and a part of the plurality of first longitudinal steel bars and a part of the plurality of second longitudinal steel bars are connected with the embedded steel support frame conversion column connecting structure;
the beam column connection node further comprises a plurality of stirrups, the plurality of first longitudinal steel bars, the plurality of second longitudinal steel bars and the support frame form an edge member, and the plurality of stirrups are arranged around the edge member.
2. A beam-column connection node according to claim 1, wherein a plurality of said diagonal braces comprise:
a first diagonal brace disposed along a diagonal of the support frame; the method comprises the steps of,
and the second diagonal bracing is arranged along the other diagonal line of the supporting frame and is in cross connection with the first diagonal bracing.
3. The beam-column connection node of claim 2, wherein an included angle between the first diagonal brace and the second diagonal brace is 60 ° to 120 °.
4. The beam-column connection node according to claim 2, wherein the first diagonal brace comprises a first connection section and a second connection section, the first connection section and the second connection section are located on two sides of the second diagonal brace respectively, and are connected with the second diagonal brace.
5. The beam-column connection node according to claim 4, wherein the first connection section comprises a connection section body and a connection plate, and the second connection section is identical in structure to the first connection section; wherein, the connecting section body and the second diagonal brace are all I-steel;
one end of the connecting plate is connected with the connecting section body, and the other end of the connecting plate is connected with the second diagonal brace.
6. The beam-column connection node of claim 5, wherein the embedded steel support frame transfer column connection structure further comprises:
the flange of the connecting section body is provided with at least one peg.
7. The beam-column connection node of claim 1, wherein the embedded steel support frame transfer column connection structure is embedded in a lap joint block, the lap joint block being a reinforced concrete structure.
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| CN113445628A (en) * | 2021-06-07 | 2021-09-28 | 悉地国际设计顾问（深圳）有限公司 | Diagonal bracing frame-core tube building structure and construction method thereof |
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| CN205935200U (en) * | 2016-08-20 | 2017-02-08 | 黄再清 | Steel structural framework XI type supports structure |
| CN206477433U (en) * | 2016-12-26 | 2017-09-08 | 中建钢构有限公司 | A kind of steel core concrete column and girder steel, steel diagonal brace connecting node |
| KR20180094269A (en) * | 2017-02-15 | 2018-08-23 | 장태산 | Connection piece for support frames and connection method using the cooenction piece |
| CN112554335A (en) * | 2020-12-10 | 2021-03-26 | 深圳大学建筑设计研究院有限公司 | Self-balancing lap joint column conversion structure of diagonal web member truss |
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