Reinforcement connection structure and construction method of beam bottom in rigid concrete beam-column joint

Abstract

The present invention discloses a steel bar connection structure for the bottom of a beam of a rigid concrete beam-column node, comprising a steel column, a steel beam, an ear plate, a first steel bar layer, a second steel bar layer, a third steel bar layer and a bent anchor steel bar; the steel beam is fixed to the outer side of the steel column; the ear plate is horizontally fixed to the outer side of the steel column and is located below the steel beam; a steel bar installation space is formed between the ear plate and the steel beam; a through hole is provided at the end of the ear plate; the third steel bar layer, the first steel bar layer and the second steel bar layer are fixed to the outer side of the steel column in order from top to bottom, and the third steel bar layer and the first steel bar layer are located in the steel bar installation space, and the second steel bar layer is located at the lower part of the ear plate; the bent anchor steel bar is horizontally arranged at the upper part of the ear plate, and one end thereof passes through the through hole. The present invention sets the beam bottom steel bar as three rows of steel bars without affecting the structural performance, thereby solving the problem that the through design of the steel bar at the bottom of the rigid concrete beam and the web of the steel structure and the cross design of the steel bar and the flange plate cannot be completed.

Description

Technical Field

[0001] The invention relates to the technical field of beam bottom reinforcement connection at a large-span rigid concrete beam-column node, and more specifically to a beam bottom reinforcement connection structure and a construction method at a rigid concrete beam-column node. Background Art

[0002] The composite structural components of rigid concrete (also known as steel-concrete or reinforced steel concrete) are composed of concrete, steel, longitudinal steel bars and stirrups, and the basic components are beams and columns. The rigid concrete structure is divided into structures in which all structural components are made of rigid concrete and structures in which some structural components are made of rigid concrete. Rigid concrete has the advantages of high strength, small cross-sectional dimensions of components, strong bond strength with concrete, saving concrete, increasing the use space, reducing project costs, and improving project quality. The existence of steel structure greatly improves the ductility of the components, making them have strong deformation ability, good seismic performance, high bearing capacity, and better fire resistance and corrosion resistance when using external concrete structure.

[0003] However, the setting of large numbers of compact steel bars in the steel structure beam-column joints becomes a major problem. The steel bars at the joints are difficult to arrange, there is a contradiction between steel structure welding and steel bar connection, and installation is difficult.

[0004] Therefore, it is an urgent problem for technical personnel in this field to provide a reasonably and orderly arranged steel bar connection structure and construction method for the bottom of a rigid concrete beam-column node. Summary of the invention

[0005] In view of this, the present invention provides a steel bar connection structure and construction method for the bottom of a rigid concrete beam-column node, which can adjust the arrangement while ensuring the force, meet the requirements of on-site steel structure hoisting and steel bar connection, and facilitate construction.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] The steel bar connection structure at the bottom of the beam of a rigid concrete beam-column node includes a steel column, a steel beam, an ear plate, a first steel bar layer, a second steel bar layer, a third steel bar layer and bent anchor steel bars;

[0008] The steel column is plate-shaped;

[0009] The steel beam is fixed to the outer side of the steel column;

[0010] The ear plate is horizontally fixed on the outer side of the steel column and is located below the steel beam; a steel bar installation space is formed between the ear plate and the steel beam; a through hole is opened at the end of the ear plate;

[0011] The third steel bar layer, the first steel bar layer and the second steel bar layer are fixed on the outer surface of the steel column in order from top to bottom, and the third steel bar layer and the first steel bar layer are located in the steel bar installation space, and the second steel bar layer is located at the lower part of the ear plate;

[0012] The bent anchor steel bar is horizontally arranged on the upper part of the ear plate, and one end thereof passes through the through hole.

[0013] Further, it also includes a plurality of sleeves;

[0014] The first steel bar layer includes a plurality of first steel bars located in the same horizontal plane and spaced apart, and the first steel bars are welded to the outer surface of the steel column located in the steel bar installation space through their ends;

[0015] The second steel bar layer includes a plurality of second steel bars located in the same horizontal plane and distributed at intervals, and the plurality of second steel bars are welded to the outer surface of the steel column located at the lower part of the ear plate through their ends;

[0016] The third steel bar layer includes a plurality of third steel bars located in the same horizontal plane and distributed at intervals, and the plurality of third steel bars are fixed on the outer surface of the steel column in the steel bar installation space through the sleeve.

[0017] Furthermore, it also includes a plurality of fourth steel bars; the plurality of fourth steel bars are located in the same horizontal plane and are distributed at intervals;

[0018] The number of the steel columns is 4; the backs of the 4 steel columns are connected as a whole through a column web, and a through space is formed between adjacent steel columns; the plurality of fourth steel bars are all arranged on the upper portion of the ear plate and extend into the through space.

[0019] Furthermore, the plurality of sleeves are welded to the outer side surface of the steel column; and the third steel bar is threadedly connected to the sleeve.

[0020] Furthermore, it also includes a stiffening plate; the stiffening plate is welded to the back of the steel column.

[0021] Furthermore, the steel beam includes a flange plate and a beam web, and the flange plate is horizontally arranged and connected to the beam web as a whole. The flange plate and the beam web are both welded to the outer side surface of the steel column; the steel bar installation space is formed between the ear plate and the flange plate.

[0022] Furthermore, the ear plate is welded to the outer side surface of the steel column.

[0023] By adopting the above scheme, the beneficial effects of the present invention are:

[0024] Without affecting the structural performance, the present invention arranges the bottom reinforcement of the beam into three rows of reinforcement, adjusts the reinforcement arrangement, and adds ear plates, sleeves and bent anchor reinforcement, thereby solving the difficult problems that the through-design of the bottom reinforcement of the rigid concrete beam and the web of the steel structure and the intersection design of the reinforcement and the flange plate cannot be completed.

[0025] The method for constructing the bottom reinforcement of a rigid concrete beam-column node comprises the following steps:

[0026] 1) Weld the stiffening plate to the back of the steel column;

[0027] 2) Weld multiple sleeves at intervals on the same horizontal direction on the outer side of the steel column;

[0028] 3) Weld the ear plate horizontally to the outer side of the steel column below the sleeve;

[0029] 4) Weld the steel beam to the outer side of the steel column above the sleeve;

[0030] 5) welding the ends of the plurality of first steel bars to the outer side of the steel column between the ear plate and the sleeve at intervals from the middle to both sides, and the plurality of first steel bars are located on the same horizontal plane; welding the ends of the plurality of second steel bars to the outer side of the steel column below the ear plate at intervals from the middle to both sides, and the plurality of second steel bars are located on the same horizontal plane;

[0031] 6) threading the ends of the plurality of third steel bars respectively with the plurality of sleeves;

[0032] 7) Place the bent anchor steel bar horizontally on the ear plate, with one end of the bent anchor steel bar passing through the through hole on the ear plate;

[0033] 8) After installation is completed, acceptance shall be carried out and the next construction process shall be organized.

[0034] By adopting the above scheme, the beneficial effects of the present invention are:

[0035] 1) The number of steel bars remains unchanged and the force meets the requirements; 2) The arrangement is optimized, the welding environment for operators is better, and the welding quality is guaranteed; 3) The reasonable arrangement of steel bars can effectively pour concrete, and the vibrator can vibrate in place to avoid the occurrence of holes, exposed steel bars, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1The accompanying drawing is a schematic diagram of the overall structure of the steel bar connection structure at the bottom of a beam of a rigid concrete beam-column node provided by the present invention;

[0038] Figure 2 The accompanying drawing is a front view of the steel bar connection structure at the bottom of a beam of a rigid concrete beam-column node provided by the present invention;

[0039] Figure 3 The accompanying drawing is a side view of the beam bottom reinforcement connection structure of the rigid concrete beam-column node provided by the present invention.

[0040] In the figure: 1-steel column, 2-steel beam, 3-ear plate, 4-first steel bar layer, 5-second steel bar layer, 6-third steel bar layer, 7-bent anchor steel bar, 8-sleeve, 9-fourth steel bar, 10-column web, 11-stiffening plate, 21-flange plate, 22-beam web, 31-through hole, 41-first steel bar, 51-second steel bar, 61-third steel bar. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] like Figure 1-3 As shown, the embodiment of the present invention discloses a steel bar connection structure at the bottom of a rigid concrete beam-column node, comprising a steel column 1, a steel beam 2, an ear plate 3, a first steel bar layer 4, a second steel bar layer 5, a third steel bar layer 6 and a bent anchor steel bar 7;

[0043] The steel column 1 is plate-shaped;

[0044] The steel beam 2 is fixed on the outer side of the steel column 1;

[0045] The ear plate 3 is horizontally fixed on the outer side of the steel column 1 and is located below the steel beam 2; a steel bar installation space is formed between the ear plate 3 and the steel beam 2; a through hole 31 is opened at the end of the ear plate 3;

[0046] The third steel bar layer 6, the first steel bar layer 4 and the second steel bar layer 5 are fixed on the outer surface of the steel column 1 in order from top to bottom, and the third steel bar layer 6 and the first steel bar layer 4 are located in the steel bar installation space, and the second steel bar layer 5 is located at the lower part of the ear plate 3;

[0047] The bent anchor steel bar 7 is horizontally arranged on the upper part of the ear plate 3 , and one end thereof passes through the through hole 31 .

[0048] The present invention sets the bottom reinforcement of the beam as three rows of reinforcement without affecting the structural performance, adjusts the reinforcement arrangement, and adds ear plates 3 and bent anchor reinforcements 7, thereby solving the difficult problems that the through-design of the bottom reinforcement of the rigid concrete beam and the web of the steel structure and the cross-design of the reinforcement and the flange plate cannot be completed.

[0049] Specifically, it also includes multiple sleeves 8; the first steel bar layer 4 includes multiple first steel bars 41 located in the same horizontal plane and distributed at intervals, and the multiple first steel bars 41 are welded to the outer surface of the steel column 1 located in the steel bar installation space through their ends; the second steel bar layer 5 includes multiple second steel bars 51 located in the same horizontal plane and distributed at intervals, and the multiple second steel bars 51 are welded to the outer surface of the steel column 1 located at the lower part of the ear plate 3 through their ends; the third steel bar layer 6 includes multiple third steel bars 61 located in the same horizontal plane and distributed at intervals, and the multiple third steel bars 61 are fixed to the outer surface of the steel column 1 in the steel bar installation space through the sleeve 8.

[0050] Specifically, it also includes multiple fourth steel bars 9; the multiple fourth steel bars 9 are located in the same horizontal plane and are distributed at intervals; the number of steel columns 1 is 4; the backs of the four steel columns 1 are connected as a whole through the column web 10, and a through space is formed between adjacent steel columns 1; the multiple fourth steel bars 9 are all arranged on the upper part of the ear plate 3 and extend into the through space.

[0051] Specifically, the plurality of sleeves 8 are all connected to the outer side surface of the steel column 1 by welding; and the third steel bar 61 is connected to the sleeve 8 by threading.

[0052] Specifically, it also includes a stiffening plate 11 ; the stiffening plate 11 is welded to the back of the steel column 1 .

[0053] Specifically, the steel beam 2 includes a flange plate 21 and a beam web 22. The flange plate 21 is horizontally arranged and connected to the beam web 22 as a whole. The flange plate 21 and the beam web 22 are both welded to the outer side of the steel column 1; a steel bar installation space is formed between the ear plate 3 and the flange plate 21.

[0054] Specifically, the ear plate 3 is welded to the outer side surface of the steel column 1 .

[0055] The embodiment of the present invention also discloses a method for constructing the bottom reinforcement of a rigid concrete beam-column node, comprising the following steps:

[0056] 1) Weld the stiffening plate 11 to the back of the steel column 1;

[0057] 2) welding a plurality of sleeves 8 at intervals on the same horizontal direction of the outer side of the steel column 1;

[0058] 3) horizontally welding the ear plate 3 to the outer side of the steel column 1 below the sleeve 8;

[0059] 4) Weld the steel beam 2 to the outer side of the steel column 1 above the sleeve 8;

[0060] 5) The ends of the plurality of first steel bars 41 are welded to the outer side of the steel column 1 between the ear plate 3 and the sleeve 8 at intervals from the middle to both sides, and the plurality of first steel bars 41 are located on the same horizontal plane; the ends of the plurality of second steel bars 51 are welded to the outer side of the steel column 1 below the ear plate 3 at intervals from the middle to both sides, and the plurality of second steel bars 51 are located on the same horizontal plane;

[0061] 6) The ends of the plurality of third steel bars 61 are respectively threadedly connected to the plurality of sleeves 8;

[0062] 7) placing the bent anchor steel bar 7 horizontally on the ear plate 3, with one end of the bent anchor steel bar 7 passing through the through hole 31 on the ear plate 3;

[0063] 8) After installation is completed, acceptance shall be carried out and the next construction process shall be organized.

[0064] The construction method of the present invention has the following advantages: 1) the number of steel bars remains unchanged and the force meets the requirements; 2) the arrangement is optimized, the welding environment for operators is better, and the welding quality is guaranteed; 3) the reasonable arrangement of steel bars can effectively pour concrete, and the vibrating rod vibrates in place to avoid the occurrence of holes, exposed steel bars and the like.

[0065] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The steel bar connection structure at the bottom of the beam of the rigid concrete beam-column node. It is characterized in that It includes steel columns, steel beams, ear plates, the first steel bar layer, the second steel bar layer, the third steel bar layer and bent anchor steel bars; The steel column is plate-shaped; The steel beam is fixed to the outer side of the steel column; The ear plate is horizontally fixed on the outer side of the steel column and is located below the steel beam; a steel bar installation space is formed between the ear plate and the steel beam; a through hole is opened at the end of the ear plate; The third steel bar layer, the first steel bar layer and the second steel bar layer are fixed on the outer surface of the steel column in order from top to bottom, and the third steel bar layer and the first steel bar layer are located in the steel bar installation space, and the second steel bar layer is located at the lower part of the ear plate; The bent anchor steel bar is horizontally arranged on the upper part of the ear plate, and one end thereof passes through the through hole; It also includes a plurality of fourth steel bars; the plurality of fourth steel bars are located in the same horizontal plane and are spaced apart; The number of the steel columns is 4; the backs of the 4 steel columns are connected as a whole through a column web, and a through space is formed between adjacent steel columns; The plurality of fourth steel bars are all arranged on the upper portion of the ear plate and extend into the through space.

2. The steel bar connection structure at the bottom of a rigid concrete beam-column node according to claim 1, It is characterized in that Also included are a plurality of sleeves; The first steel bar layer includes a plurality of first steel bars located in the same horizontal plane and spaced apart, and the first steel bars are welded to the outer surface of the steel column located in the steel bar installation space through their ends; The second steel bar layer includes a plurality of second steel bars located in the same horizontal plane and distributed at intervals, and the plurality of second steel bars are welded to the outer surface of the steel column located at the lower part of the ear plate through their ends; The third steel bar layer includes a plurality of third steel bars located in the same horizontal plane and distributed at intervals, and the plurality of third steel bars are fixed on the outer surface of the steel column in the steel bar installation space through the sleeve.

3. The steel bar connection structure at the bottom of a rigid concrete beam-column node according to claim 2, It is characterized in that The plurality of sleeves are all welded to the outer side surface of the steel column; and the third steel bar is threadedly connected to the sleeve.

4. The reinforced concrete beam-column node beam bottom connection structure according to claim 1, It is characterized in that It also includes a stiffening plate; the stiffening plate is welded to the back of the steel column.

5. The beam bottom reinforcement connection structure of the rigid concrete beam-column node according to claim 1, It is characterized in that The steel beam comprises a flange plate and a beam web, the flange plate is arranged horizontally and connected to the beam web as a whole, the flange plate and the beam web are both welded to the outer side surface of the steel column; the steel bar installation space is formed between the ear plate and the flange plate.

6. The beam bottom reinforcement connection structure of the rigid concrete beam-column node according to claim 1, It is characterized in that The ear plate is welded to the outer side surface of the steel column.

7. A method for constructing the bottom reinforcement of a rigid concrete beam-column joint, using the rigid concrete beam-column joint bottom reinforcement connection structure as claimed in any one of claims 1 to 6. It is characterized in that The following steps are involved: 1) Weld the stiffening plate to the back of the steel column; 2) Weld multiple sleeves at intervals on the same horizontal direction on the outer side of the steel column; 3) Weld the ear plate horizontally to the outer side of the steel column below the sleeve; 4) Weld the steel beam to the outer side of the steel column above the sleeve; 5) The ends of the plurality of first steel bars are welded to the outer side of the steel column between the ear plate and the sleeve at intervals from the middle to both sides, and the plurality of first steel bars are located on the same horizontal plane; the ends of the plurality of second steel bars are welded to the outer side of the steel column below the ear plate at intervals from the middle to both sides, and the plurality of second steel bars are located on the same horizontal plane; 6) Connecting the ends of the plurality of third steel bars to the plurality of sleeves through threads respectively; 7) Place the bent anchor steel bar horizontally on the ear plate, with one end of the bent anchor steel bar passing through the through hole on the ear plate; 8) After installation is completed, acceptance shall be carried out and the next construction process shall be organized.

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