Prefabricated hollow column composite beam connection structure and construction method

Abstract

The present invention relates to a prefabricated hollow column composite beam connection structure and construction method. A prefabricated hollow column composite beam connection structure comprises a hollow column and a composite beam connected to each other; a beam recess is reserved in the beam-column intersection area of ​​the hollow column according to the size of the composite beam, and the stirrups of the hollow column are normally arranged within the beam recess; the bottom longitudinal stress-bearing steel bars and the beam side structural bars or torsion bars of the composite beam are mechanically connected or tied within the span of 1 / 3 of the composite beam support outside the hollow column; the upper longitudinal stress-bearing steel bars of the composite beam are mechanically connected or tied within the mid-span of 1 / 3 of the composite beam outside the hollow column. This method of reinforcing bar construction in the core area of ​​the prefabricated concrete hollow column beam has the advantages of fast construction speed and high installation efficiency, and conforms to the development trend of assembled and standardized building industrialization.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, and in particular to a prefabricated hollow column composite beam connection structure and a construction method. Background Art

[0002] At present, the development of prefabricated frame structure system is becoming mature. The prefabricated column components in conventional prefabricated concrete frame structures are too heavy, and it is extremely difficult to tie steel bars and support formwork in the core areas of beams and columns. The quality of concrete pouring construction is not easy to guarantee, and the degree of industrialization is low. Summary of the invention

[0003] The purposes of the present invention include, for example, providing a prefabricated hollow column composite beam connection structure and construction method, which not only solves the problem that the bottom and upper longitudinal force-bearing steel bars and the side structural bars or button bars of the composite beam cannot be installed due to the normal setting of stirrups in the hollow column in the core area of ​​the beam and column, but also solves the problem of supporting the formwork in the core area of ​​the beam and column without setting a beam nest in the hollow column range. This prefabricated concrete hollow column beam and column core area reinforcement construction method has fast construction speed and high installation efficiency, and conforms to the development trend of assembled and standardized building industrialization.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, an embodiment of the present invention provides a prefabricated hollow column composite beam connection structure, comprising:

[0006] Interconnected hollow columns and composite beams;

[0007] The beam-column junction area of ​​the hollow column is reserved with a beam socket according to the size of the composite beam, and the stirrups of the hollow column within the beam socket are set normally;

[0008] The longitudinal stress-bearing steel bars at the bottom of the composite beam and the structural bars or torsion bars on the side of the beam are connected mechanically or by tying within the 1 / 3 span of the composite beam support outside the hollow column;

[0009] The upper longitudinal force-bearing reinforcement of the composite beam is mechanically connected or tied within the 1 / 3 mid-span of the composite beam outside the hollow column.

[0010] In an optional embodiment, when the hollow column is a side column or a corner column, beam sockets are reserved on both sides of the column body.

[0011] In an optional implementation, when the hollow column is a center column, beam sockets are reserved on the four sides of the column.

[0012] In an optional embodiment, the edge of the beam socket is made into a rough surface, and the stirrups within the beam socket of the hollow column are normally arranged;

[0013] Before installing the composite beam, place connecting steel bars in the core area of ​​the beam and column.

[0014] In an optional embodiment, the longitudinal force-bearing steel bars of the composite beam are mechanically connected or tied to the pre-buried connecting steel bars arranged in advance within the beam cavity of the hollow column.

[0015] In an optional embodiment, the longitudinal stress-bearing steel bars in the upper part of the composite beam pass through the hollow column beam socket and are mechanically connected or tied within the 1 / 3 span of the composite beam, and the joint rate of the longitudinal stress-bearing steel bars is not greater than 50%.

[0016] In an optional embodiment, the longitudinal stress-bearing steel bars at the lower part of the composite beam pass through the hollow column beam socket and are mechanically connected or tied within 1 / 3 of the span of the composite beam support, and the joint rate of the longitudinal stress-bearing steel bars is not greater than 50%.

[0017] In an optional embodiment, the side waist reinforcement or torsion reinforcement of the composite beam passes through the hollow column beam socket and is mechanically connected or tied within 1 / 3 of the span of the composite beam support, and the steel bar joint rate is not more than 50%.

[0018] In an optional embodiment, the upper and lower steel bars of the structural waist reinforcement are staggered by more than or equal to one beam height; the adjacent torsional waist reinforcements are staggered by more than or equal to 0.3LL or 0.3LL E .

[0019] In a second aspect, an embodiment of the present invention provides a construction method, the construction method comprising the following steps:

[0020] The beam-column junction area of ​​the hollow column is reserved with a beam socket according to the size of the composite beam, and the stirrups of the hollow column within the beam socket are set normally;

[0021] The longitudinal stress-bearing steel bars at the bottom of the composite beam and the structural bars or torsion bars on the side of the beam are connected mechanically or by tying within the 1 / 3 span of the composite beam support outside the hollow column;

[0022] The upper longitudinal stress-bearing steel bars of the composite beam are mechanically connected or tied within the mid-span of the composite beam outside the hollow column to obtain any of the above-mentioned prefabricated hollow column composite beam connection structures.

[0023] The beneficial effects of the embodiments of the present invention include, for example:

[0024] (1) The reinforcement construction method for the core area of ​​prefabricated concrete hollow columns solves the problem that the longitudinal force-bearing reinforcement at the bottom of the composite beam and the structural reinforcement or button reinforcement on the side of the beam cannot be installed due to the normal setting of stirrups in the hollow column core area.

[0025] (2) The method of reinforcing steel construction in the core area of ​​prefabricated concrete hollow columns solves the problem of supporting formwork without setting beam sockets in the core area of ​​hollow columns. The beam formwork is only supported at the connection of the steel bars at the ends of the composite beams, thus realizing the rapid construction of prefabricated concrete hollow column frame structures, which is in line with the development trend of assembly and standardization of building industrialization. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 is a first structural schematic diagram of this embodiment;

[0028] Figure 2 is a second structural schematic diagram of this embodiment;

[0029] Figure 3 is a third structural schematic diagram of this embodiment;

[0030] Figure 4 This is a fourth structural diagram of this embodiment.

[0031] Icons: 1-hollow column stirrup mesh; 2-hollow column formwork; 21-hollow column beam socket edge line; 3-longitudinal load-bearing connecting steel bars of hollow column; 4-longitudinal load-bearing connecting steel bars at the lower part of composite beam; 5-structural bars or torsion bars at the side of beam; 6-longitudinal load-bearing connecting steel bars at the upper part of composite beam; 7-longitudinal load-bearing steel bars at the lower part of composite beam; 8-structural bars or torsion bars at the side of beam; 9-longitudinal load-bearing steel bars at the upper part of composite beam; 10-composite beam stirrups; 11-mechanical connection or binding connection of longitudinal load-bearing steel bars of composite beam; 12-composite beam concrete. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0037] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0038] Please refer to Figures 1 to 4 , this embodiment provides a prefabricated hollow column composite beam connection structure, which includes hollow columns and composite beams connected to each other.

[0039] The beam-column junction area of ​​the hollow column is reserved with a beam socket according to the size of the composite beam, and the stirrups of the hollow column within the beam socket are set normally;

[0040] The lower longitudinal force reinforcement of the composite beam and the structural reinforcement or torsion reinforcement on the side of the beam are connected mechanically or by tying within the 1 / 3 (one third) span of the composite beam support outside the hollow column;

[0041] The upper longitudinal force-bearing reinforcement of the composite beam is mechanically connected or tied within the 1 / 3 (one third) mid-span of the composite beam outside the hollow column.

[0042] Compared with the existing technology that requires setting up supporting formwork in the hollow column range and causing inconvenience, this prefabricated hollow column composite beam connection structure not only solves the problem that the bottom and upper longitudinal force-bearing steel bars and the side structural bars or button bars of the composite beam core area cannot be installed due to the normal setting of stirrups in the hollow column, but also solves the problem of supporting formwork in the core area of ​​the beam and column without setting up beam sockets in the hollow column range. This prefabricated concrete hollow column core area reinforcement construction method has fast construction speed and high installation efficiency, conforms to the development trend of assembled and standardized building industrialization, and is a new technology in the field of prefabricated buildings.

[0043] Figure 1 Schematic diagram of the design of reserved beam sockets in hollow columns for prefabricated hollow column composite beam connection structure. Figure 2 This is a schematic diagram of the connection reinforcement of the composite beam in the core area of ​​the hollow column. Figure 3 This is the elevation drawing of the steel bar connection in the core area of ​​the hollow column beam. Figure 4 This is the cross-sectional view of the steel bar connection in the core area of ​​the prefabricated hollow column beam.

[0044] Please continue to refer to Figures 1 to 4 , to learn more structural details. As can be seen from the figure, in an optional embodiment, when the hollow column is a side column or a corner column, beam sockets are reserved on both sides of the column.

[0045] In an optional implementation, when the hollow column is a center column, beam sockets are reserved on the four sides of the column.

[0046] In an optional embodiment, the edge of the beam socket is made into a rough surface, and the stirrups within the beam socket of the hollow column are normally arranged;

[0047] Before installing the composite beam, place connecting steel bars in the core area of ​​the beam and column.

[0048] Further, from Figure 1 It can be seen that the hollow column includes a hollow column stirrup mesh 1, a hollow column formwork 2, a hollow column beam edge 21, and a hollow column longitudinal force-bearing connecting steel bar 3. The hollow column stirrup mesh 1 and the hollow column longitudinal force-bearing connecting steel bar 3 are arranged in the hollow column formwork 2 and formed by concrete pouring. Figure 2 It can be seen that when the hollow column is connected to the composite beam, in the core area of ​​the beam-column, the lower longitudinal force-bearing connecting steel bars 4 of the composite beam, the structural bars or torsion bars 5 on the side of the beam, and the upper longitudinal force-bearing connecting steel bars 6 of the composite beam are all connected to the hollow column stirrup mesh 1 and the hollow column longitudinal force-bearing connecting steel bars 3, and then wait for casting to form.

[0049] It should be noted that in this embodiment, the beam recess is treated with a rough surface. Figure 2 The mark of the medium rough surface C.

[0050] Continue to refer to Figure 3 and Figure 4 In an optional embodiment, the longitudinal force-bearing steel bars of the composite beam are mechanically connected or tied to the pre-buried connecting steel bars arranged in advance within the hollow beam cavity of the hollow column.

[0051] In an optional embodiment, the upper longitudinal stress-bearing steel bars 9 of the composite beam pass through the hollow column beam socket and are mechanically connected or tied within the 1 / 3 span of the composite beam, and the joint rate of the longitudinal stress-bearing steel bars is not greater than 50%.

[0052] In an optional embodiment, the longitudinal stress-bearing steel bars 7 at the lower part of the composite beam pass through the hollow column beam socket and are mechanically connected or tied within 1 / 3 of the span of the composite beam support, and the joint rate of the longitudinal stress-bearing steel bars is not greater than 50%.

[0053] In an optional embodiment, the side waist reinforcement or torsion reinforcement of the composite beam passes through the hollow column beam socket and is mechanically connected or tied within 1 / 3 of the span of the composite beam support, and the steel bar joint rate is not more than 50%.

[0054] As can be seen from the figure, the composite beam includes interconnected lower longitudinal stress-bearing connecting steel bars 4, beam side structural bars or torsion bars connecting steel bars 5, upper longitudinal stress-bearing connecting steel bars 6 of the composite beam, lower longitudinal stress-bearing steel bars 7 of the composite beam, beam side structural bars or torsion bars 8, upper longitudinal stress-bearing steel bars of the composite beam 9, composite beam stirrups 10, and mechanical connections or binding connections 11 of the longitudinal stress-bearing steel bars of the composite beam. The above-mentioned steel bars are cast by composite beam concrete 12.

[0055] Furthermore, in an optional embodiment, the staggered distance between the upper and lower steel bars of the structural waist reinforcement is greater than or equal to one beam height; and the staggered distance between adjacent torsional waist reinforcements is greater than or equal to 0.3LL or 0.3LLE.

[0056] It should be noted that the structural waist reinforcement here includes the beam side structural reinforcement or torsion reinforcement connecting steel bars 5 and the lower longitudinal force-bearing connecting steel bars 4 of the composite beam; the torsional waist reinforcement here includes the composite beam side structural reinforcement or torsion reinforcement 8 and the lower longitudinal force-bearing steel bars 7 of the composite beam.

[0057] The embodiment of the present invention further provides a construction method, which comprises the following steps:

[0058] The beam-column junction area of ​​the hollow column is reserved with a beam socket according to the size of the composite beam, and the stirrups of the hollow column within the beam socket are set normally;

[0059] The longitudinal force-bearing steel bars 7 at the lower part of the composite beam and the structural bars or torsion bars 8 at the side of the beam are connected mechanically or by tying within the 1 / 3 composite beam support span outside the hollow column;

[0060] The longitudinal stress-bearing steel bars 9 at the upper part of the composite beam are mechanically connected or tied within the mid-span range of 1 / 3 of the composite beam outside the hollow column, thereby obtaining the above-mentioned prefabricated hollow column composite beam connection structure.

[0061] The beneficial effects of the embodiments of the present invention include, for example:

[0062] (1) The reinforcement construction method for the core area of ​​prefabricated concrete hollow columns solves the problem that the lower longitudinal force-bearing reinforcement of the composite beam and the structural reinforcement or button reinforcement on the side of the beam cannot be installed due to the normal setting of stirrups in the hollow column core area.

[0063] (2) The method of reinforcing steel construction in the core area of ​​prefabricated concrete hollow columns solves the problem of supporting formwork without setting beam sockets in the core area of ​​hollow columns. The beam formwork is only supported at the connection of the steel bars at the ends of the composite beams, thus realizing the rapid construction of prefabricated concrete hollow column frame structures, which is in line with the development trend of assembly and standardization of building industrialization.

[0064] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A prefabricated hollow column composite beam connection structure, characterized in that: include: Interconnected hollow columns and composite beams; A beam socket is reserved in the beam-column junction area of ​​the hollow column according to the size of the composite beam, stirrups are normally arranged within the beam socket of the hollow column, and the composite beam is passed through the beam socket; The composite beam comprises interconnected lower longitudinal stress-bearing connecting steel bars, beam side structural bars or torsion bars connecting steel bars, upper longitudinal stress-bearing connecting steel bars, lower longitudinal stress-bearing steel bars, beam side structural bars or torsion bars, and upper longitudinal stress-bearing steel bars of the composite beam; the lower longitudinal stress-bearing connecting steel bars of the composite beam, the beam side structural bars or torsion bars connecting steel bars, and upper longitudinal stress-bearing connecting steel bars of the composite beam are placed in advance in the core area of ​​the beam column, and are connected to the stirrups of the hollow column within the range of the beam cavity; The lower longitudinal stress-bearing steel bars and the side structural bars or torsion bars of the composite beam are respectively connected to the lower longitudinal stress-bearing connecting steel bars of the composite beam and the side structural bars or torsion bars connecting steel bars by mechanical connection or binding within the 1 / 3 composite beam support span outside the hollow column; The upper longitudinal stress-bearing steel bars of the composite beam and the upper longitudinal stress-bearing connecting steel bars of the composite beam are mechanically connected or tied within the range of 1 / 3 of the mid-span of the composite beam outside the hollow column.

2. The prefabricated hollow column composite beam connection structure according to claim 1, characterized in that: The hollow column is a side column or a corner column, and beam sockets are reserved on both sides of the column.

3. The prefabricated hollow column composite beam connection structure according to claim 1, characterized in that: The hollow column is a central column, and beam sockets are reserved on the four sides of the column.

4. The prefabricated hollow column composite beam connection structure according to claim 1, characterized in that: The edge line of the beam socket is made into a rough surface.

5. The prefabricated hollow column composite beam connection structure according to any one of claims 1 to 4, characterized in that: The longitudinal stress-bearing reinforcement in the upper part of the composite beam passes through the hollow column beam socket and is mechanically connected or tied within the 1 / 3 span of the mid-span of the composite beam. The joint rate of the longitudinal stress-bearing reinforcement is not greater than 50%.

6. The prefabricated hollow column composite beam connection structure according to any one of claims 1 to 4, characterized in that: The longitudinal stress-bearing steel bars at the lower part of the composite beam pass through the hollow column beam socket and are mechanically connected or tied within 1 / 3 of the span of the support of the composite beam, and the joint rate of the longitudinal stress-bearing steel bars is not more than 50%.

7. The prefabricated hollow column composite beam connection structure according to any one of claims 1 to 4, characterized in that: The side waist reinforcement or torsion reinforcement of the composite beam passes through the hollow column beam socket and is mechanically connected or tied within 1 / 3 of the span of the support of the composite beam, and the steel bar joint rate is not more than 50%.

8. The prefabricated hollow column composite beam connection structure according to claim 1, characterized in that: The distance between the upper and lower reinforcement bars of adjacent structural waist reinforcements in the height direction of the composite beam is greater than or equal to one beam height; The distance between adjacent torsional reinforcement bars in the length direction of the composite beam is greater than or equal to 0.3LL or 0.3LLE.

9. A construction method, characterized in that: The construction method comprises the following steps: A beam socket is reserved in the beam-column junction area of ​​the hollow column according to the size of the composite beam, and the stirrups of the hollow column within the beam socket are arranged normally; The bottom longitudinal force-bearing steel bars of the composite beam and the structural bars or torsion bars on the side of the beam are mechanically connected or tied within the 1 / 3 composite beam support span outside the hollow column; The upper longitudinal stress-bearing steel bars of the composite beam are mechanically connected or tied within the mid-span of the 1 / 3 composite beam outside the hollow column to obtain the prefabricated hollow column composite beam connection structure described in any one of claims 1-8.

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