Connecting structure of unequal-height frame beam and steel column

Abstract

The utility model relates to a connecting structure of an unequal-height frame beam and a steel column, which is characterized in that a connecting part comprises an upper horizontal stiffening plate corresponding to an upper beam plate and a lower horizontal stiffening plate corresponding to a lower beam plate, and a vertical fixing plate is arranged between the upper horizontal stiffening plate and the lower horizontal stiffening plate; a connecting plate is arranged between the vertical fixing plate and the web plate which correspond to each other; the connecting part comprises a first connecting part connected with the first steel beam and a second connecting part connected with the second steel beam, the upper horizontal stiffening plates of the first connecting part and the second connecting part are arranged at the same height, and the lower horizontal stiffening plates of the first connecting part and the second connecting part are arranged in a vertically staggered manner. In a steel structure building frame, a unified structure is provided for the structure that steel beams with different heights exist on the same node of the steel column, construction management is convenient, and structural safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, in particular to a beam-column connection structure of a steel structure building, in particular to a connection structure of unequal height frame beams and steel columns. Background Art

[0002] The steel columns and beams of steel structures can be prefabricated in factories and then assembled on site. The construction speed is fast and the construction period is short, which is especially suitable for the construction requirements of large venues and factories. The frame of steel structure buildings is also mainly composed of beam-column connections. For the connection nodes between steel columns and steel beams, if the steel beams on each side of the steel column are set at the same height, the column circumferential connection structure only needs to be set symmetrically on each side. However, when the steel beams on each side of the steel column are of unequal heights, a reasonable connection transition structure needs to be set to ensure the reliability of the structure between the steel beams and steel columns on each side. Utility Model Content

[0003] The utility model aims to solve the problem that at the connection nodes of steel columns and steel beams in steel structure buildings, when the steel beams on each side of the steel column are of unequal height, higher requirements are placed on the structural transition, and to provide a connection structure between frame beams and steel columns of unequal heights, so as to form a reasonable arrangement of steel beam supports of unequal heights on each side of the steel column and ensure the reliability of the structure.

[0004] The utility model adopts the following technical scheme to solve the technical problem: a connection structure of unequal height frame beams and steel columns, comprising a steel column, wherein a plurality of steel beams are connected around the steel column, wherein the steel beams comprise a first steel beam and a second steel beam, wherein the height of the first steel beam is greater than the height of the second steel beam, wherein the first steel beam and the second steel beam are both I-beams, wherein the first steel beam and the second steel beam both comprise an upper beam plate, a lower beam plate and a web plate, wherein a connection portion with an I-shaped end face is arranged around the steel column corresponding to the steel beam, wherein the connection portion comprises an upper horizontal stiffening plate corresponding to the upper beam plate, and a lower horizontal stiffening plate corresponding to the lower beam plate, wherein a vertical fixing plate is arranged between the upper horizontal stiffening plate and the lower horizontal stiffening plate, and a connecting plate is arranged between the corresponding vertical fixing plate and the web plate, wherein two sides of the connecting plate are respectively fixed with bolts to the web plate and the vertical fixing plate; wherein the connecting portion comprises a first connecting portion connected to the first steel beam and a second connecting portion connected to the second steel beam, wherein the upper horizontal stiffening plates of the first connecting portion and the second connecting portion are arranged at the same height, and the lower horizontal stiffening plates of the first connecting portion and the second connecting portion are arranged in an upper-lower staggered manner.

[0005] In this device, when there are steel beams of different heights at the connection nodes between the steel column and the steel beam, the upper horizontal stiffening plates of the connection parts are aligned, and the lower horizontal stiffening plates are staggered to form a transition. When the height difference of the steel beams is small, the lower horizontal stiffening plates of the connection parts of different heights are connected in an inclined transition manner, so that the circumferential lower horizontal stiffening plates can surround the steel column to form a whole, ensuring the structural strength. When the height difference of the steel beams is large, the lower horizontal stiffening plates of the two different height connection parts are independently clamped and welded to the steel beams, and the welding arc is guaranteed to ensure the reliability of the connection. This solution provides a unified structure for structures with steel beams of different heights at the same node of the steel column, facilitates construction management, and ensures structural safety.

[0006] Preferably, the height difference between the first steel beam and the second steel beam does not exceed 150 mm, an inclined connecting plate is used for transition between the lower horizontal stiffening plate of the first connecting part and the lower horizontal stiffening plate of the second connecting part, a vertically arranged reinforcing plate is provided between the inclined connecting plate and the upper horizontal stiffening plate of the second connecting part, and the slope of the inclined connecting plate does not exceed 1:3.

[0007] As another preferred structure, the height difference between the first steel beam and the second steel beam is greater than 150 mm, and the inner sides of the lower horizontal stiffening plate of the first connecting part and the lower horizontal stiffening plate of the second connecting part are directly welded and fixed to the steel columns respectively.

[0008] Preferably, the welding edges of the lower horizontal stiffening plate of the first connection part, the lower horizontal stiffening plate of the second connection part and the steel column are not less than 180°.

[0009] Preferably, the inner side edges of the upper horizontal stiffening plates are welded to the steel columns, and the adjacent side edges of adjacent upper horizontal stiffening plates are butted against each other and fixed by welding.

[0010] Preferably, when adjacent lower horizontal stiffening plates are of the same height, adjacent sides of adjacent lower horizontal stiffening plates are welded and fixed.

[0011] Preferably, the connecting plate is a double connecting plate, which is arranged on both sides of the joint between the web and the vertical fixing plate.

[0012] Preferably, the joints between the upper beam plate and the upper horizontal stiffening plate are beveled and fixed by welding, the joints between the lower beam plate and the lower horizontal stiffening plate are beveled and fixed by welding, and a pad is provided on the bottom surface of the weld.

[0013] The utility model provides a unified structure for a structure in which steel beams of different heights exist on the same node of a steel column in a steel structure building frame, thereby facilitating construction management and ensuring structural safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings.

[0015] Figure 1This is the first structural schematic diagram of the utility model.

[0016] Figure 2 The utility model Figure 1 Schematic diagram of the AA section of the structure.

[0017] Figure 3 It is a second structural schematic diagram of the utility model.

[0018] In the figure: 1, steel column, 2, first connecting part, 3, second connecting part, 4, upper horizontal stiffening plate, 5, lower horizontal stiffening plate, 6, vertical fixing plate, 7, first steel beam, 8, second steel beam, 9, upper beam plate, 10, lower beam plate, 11, web plate, 12, connecting plate, 13, inclined connecting plate. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings.

[0020] Example 1: A connection structure of frame beams and steel columns of different heights, such as Figure 1 , 2 The structure includes a steel column 1, and a plurality of steel beams are connected around the steel column 1. In this example, the steel column includes three first steel beams 7 and one second steel beam 8. The height of the first steel beam 7 is greater than that of the second steel beam 8. Both the first steel beam 7 and the second steel beam 8 are I-beams, and both the first steel beam and the second steel beam include an upper beam plate 9, a lower beam plate 10 and a web plate 11.

[0021] The steel column 1 is provided with an I-shaped connection part corresponding to the steel beam around the circumference, and the connection part includes an upper horizontal stiffening plate 4 corresponding to the upper beam plate 9, and a lower horizontal stiffening plate 5 corresponding to the lower beam plate 10. A vertical fixing plate 6 is provided between the upper horizontal stiffening plate 4 and the lower horizontal stiffening plate 5, and a connecting plate 12 is provided between the corresponding vertical fixing plate 6 and the web 11. The two sides of the connecting plate are bolted to the web and the vertical fixing plate respectively; the connecting plate 12 is a double connecting plate, which is provided on both sides of the joint between the web and the vertical fixing plate. The joint between the upper beam plate 9 and the upper horizontal stiffening plate 4 is grooved and welded and fixed, and the joint between the lower beam plate 10 and the lower horizontal stiffening plate 5 is grooved and welded and fixed, and a pad is provided on the bottom of the weld.

[0022] The connecting part is a first connecting part 2 connected to the first steel beam 7 and a second connecting part 3 connected to the second steel beam. The upper horizontal stiffening plates 4 of the first connecting part 2 and the second connecting part 3 are arranged at the same height. The inner side of the upper horizontal stiffening plate 4 is welded to the steel column 1, and the adjacent sides of the adjacent upper horizontal stiffening plates 4 are butted against each other and welded and fixed. In this example, the height difference between the first steel beam and the second steel beam does not exceed 150 mm. An inclined connecting plate 13 is used for transition between the lower horizontal stiffening plate 4 of the first connecting part 2 and the lower horizontal stiffening plate 4 of the second connecting part 3. A vertically arranged reinforcing plate is provided between the inclined connecting plate 13 and the upper horizontal stiffening plate of the second connecting part, and the slope of the inclined connecting plate does not exceed 1:3. When the adjacent lower horizontal stiffening plates are at the same height, the adjacent sides of the adjacent lower horizontal stiffening plates are welded and fixed.

[0023] Example 2: A connection structure of frame beams and steel columns of different heights, such as Figure 1-3 The structure includes a steel column 1, and a plurality of steel beams are connected around the steel column 1. In this example, the steel column includes three first steel beams 7 and one second steel beam 8. The height of the first steel beam 7 is greater than that of the second steel beam 8. Both the first steel beam 7 and the second steel beam 8 are I-beams, and both the first steel beam and the second steel beam include an upper beam plate 9, a lower beam plate 10 and a web plate 11.

[0024] The steel column 1 is provided with an I-shaped connection part corresponding to the steel beam around the circumference, and the connection part includes an upper horizontal stiffening plate 4 corresponding to the upper beam plate 9, and a lower horizontal stiffening plate 5 corresponding to the lower beam plate 10. A vertical fixing plate 6 is provided between the upper horizontal stiffening plate 4 and the lower horizontal stiffening plate 5, and a connecting plate 12 is provided between the corresponding vertical fixing plate 6 and the web 11. The two sides of the connecting plate are bolted to the web and the vertical fixing plate respectively; the connecting plate 12 is a double connecting plate, which is provided on both sides of the joint between the web and the vertical fixing plate. The joint between the upper beam plate 9 and the upper horizontal stiffening plate 4 is grooved and welded and fixed, and the joint between the lower beam plate 10 and the lower horizontal stiffening plate 5 is grooved and welded and fixed, and a pad is provided on the bottom of the weld.

[0025] The connecting part is a first connecting part 2 connected to the first steel beam 7 and a second connecting part 3 connected to the second steel beam. The upper horizontal stiffening plates 4 of the first connecting part 2 and the second connecting part 3 are arranged at the same height. The inner side of the upper horizontal stiffening plate 4 is welded to the steel column 1, and the adjacent sides of the adjacent upper horizontal stiffening plates 4 are butted against each other and welded and fixed. In this example, the height difference between the first steel beam and the second steel beam is greater than 150mm. The lower horizontal stiffening plate of the first connecting part 2 and the lower horizontal stiffening plate of the second connecting part 3 are respectively arranged horizontally, and the inner sides are directly welded and fixed to the steel column. The adjacent sides of the three lower horizontal stiffening plates of the same height are welded and fixed. After the lower horizontal stiffening plates of the first connecting part are welded into one body, the arc edge of the welding side with the steel column is 270°. The arc edge of the welding side of the lower horizontal stiffening plate of the second connecting part with the steel column is 270°.

Claims

1. A connection structure of frame beams and steel columns of unequal heights, comprising a steel column, and a plurality of steel beams are connected around the steel column, characterized in that: The steel beam comprises a first steel beam and a second steel beam, the height of the first steel beam is greater than that of the second steel beam, the first steel beam and the second steel beam are both I-beams, the first steel beam and the second steel beam both comprise an upper beam plate, a lower beam plate and a web plate, a connecting portion with an I-shaped end face is arranged around the steel column corresponding to the steel beam, the connecting portion comprises an upper horizontal stiffening plate corresponding to the upper beam plate, a lower horizontal stiffening plate corresponding to the lower beam plate, a vertical fixing plate is arranged between the upper horizontal stiffening plate and the lower horizontal stiffening plate, a connecting plate is arranged between the corresponding vertical fixing plate and the web plate, and both sides of the connecting plate are bolted to the web plate and the vertical fixing plate respectively; the connecting portion comprises a first connecting portion connected to the first steel beam and a second connecting portion connected to the second steel beam, the upper horizontal stiffening plates of the first connecting portion and the second connecting portion are arranged at the same height, and the lower horizontal stiffening plates of the first connecting portion and the second connecting portion are arranged in an upper and lower offset manner.

2. The connection structure of frame beams and steel columns of unequal heights according to claim 1 is characterized in that: The height difference between the first steel beam and the second steel beam does not exceed 150mm, an inclined connecting plate is used for transition between the lower horizontal stiffening plate of the first connecting part and the lower horizontal stiffening plate of the second connecting part, a vertically arranged reinforcing plate is provided between the inclined connecting plate and the upper horizontal stiffening plate of the second connecting part, and the slope of the inclined connecting plate does not exceed 1:

3.

3. The connection structure of frame beams and steel columns of unequal heights according to claim 1 is characterized in that: The height difference between the first steel beam and the second steel beam is greater than 150 mm, and the inner sides of the lower horizontal stiffening plate of the first connecting portion and the lower horizontal stiffening plate of the second connecting portion are directly welded and fixed to the steel columns respectively.

4. The connection structure of frame beams and steel columns of unequal heights according to claim 3 is characterized in that: The welding edges of the lower horizontal stiffening plate of the first connection part, the lower horizontal stiffening plate of the second connection part and the steel column are not less than 180 degrees.

5. The connection structure of frame beams and steel columns of unequal heights according to claim 1, 2, 3 or 4, characterized in that: The inner side edge of the upper horizontal stiffening plate is welded to the steel column, and the adjacent side edges of the adjacent upper horizontal stiffening plates are butted against each other and fixed by welding.

6. The connection structure of frame beams and steel columns of unequal heights according to claim 1, 2, 3 or 4, characterized in that: When adjacent lower horizontal stiffening plates are of the same height, adjacent sides of the adjacent lower horizontal stiffening plates are welded and fixed.

7. The connection structure of frame beams and steel columns of different heights according to claim 1, 2, 3 or 4, characterized in that: The connecting plate is a double connecting plate, which is arranged on both sides of the joint between the web plate and the vertical fixing plate.

8. The connection structure of frame beams and steel columns of different heights according to claim 1, 2, 3 or 4, characterized in that: The joints between the upper beam plate and the upper horizontal stiffening plate are grooved and welded, the joints between the lower beam plate and the lower horizontal stiffening plate are grooved and welded, and a pad is arranged on the bottom surface of the weld.

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