Semi-steel beam components

Abstract

The embodiment of the application provides a kind of semi-steel skeleton beam assembly, including: semi-steel skeleton beam body, steel reinforced concrete column or steel column and concrete column, semi-steel skeleton beam body includes connected first beam section and second beam section, first beam section is the beam section of setting steel skeleton, first beam section is connected with steel reinforced concrete column or steel column, second beam section is concrete beam section, and second beam section is connected with concrete column.The semi-steel skeleton beam assembly provided by the embodiment of the application improves the connection relationship between beam and column under the condition of bearing larger load, so that the beam section with steel skeleton is connected with steel reinforced concrete column or steel column, and the concrete beam section without steel skeleton is connected with concrete column.The semi-steel skeleton beam assembly of the embodiment solves the technical problem of natural transition of frame beam and steel column (or steel column) connection when the load is large, facilitates connection, speeds up construction speed, and also reduces engineering cost.

Description

Technical Field

[0001] The present invention relates to the technical field of building engineering design and construction, in particular to a semi-steel beam assembly. Background Art

[0002] At critical locations between steel (bone) and ordinary concrete structures, such as basement roof fire lanes or areas with thick cover and correspondingly high floor loads, the bending moment is large, so if concrete beams are used directly, the longitudinal reinforcement is usually also large. One end of the concrete beam is connected to the concrete column, and the other end is connected to the steel (bone) column. Whether welding or directly anchoring the end connected to the steel (bone) column, the construction is more difficult, and due to the dense reinforcement, the concrete density in the node area is poor. However, if a steel beam is used for the entire span, additional connecting steel frames must be added to the concrete column end. This approach increases both the cost and the construction period, making it an inappropriate engineering practice. Summary of the Invention

[0003] The embodiment of the present invention provides a semi-steel frame beam assembly to solve the defects of the transition connection between the steel (frame) structure and the concrete structure in the prior art, such as complex structure, great construction difficulty and high finished product cost.

[0004] An embodiment of the present invention provides a semi-steel frame beam assembly, comprising: a semi-steel frame beam body and a concrete column and a steel-frame concrete column or a steel column, wherein the semi-steel frame beam body comprises a first beam segment and a second beam segment connected to each other, wherein the first beam segment is a beam segment in which a steel frame is provided and is connected to the steel-frame concrete column or the steel column, and the second beam segment is a concrete beam segment and is connected to the concrete column.

[0005] Wherein, the steel frame is steel section.

[0006] Among them, the end of the steel section adjacent to the steel-reinforced concrete column is a fixed-section steel section; the end of the steel section away from the steel-reinforced concrete column is a variable-section steel section, and the length of the variable-section steel section is shorter than that of the fixed-section steel section.

[0007] The length of the first beam section is at least 1 / 3 of the overall length of the semi-steel beam body.

[0008] Among them, the semi-steel frame beam body is provided with a plurality of support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements running through its length direction. One end of the support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements is connected to the steel-framed concrete column by bolting, welding and anchoring, and the other end of the support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements is anchored to the concrete column.

[0009] Among them, the connection method between the bottom longitudinal reinforcement of the beam and the steel-framed concrete column is specifically as follows: one end of the bottom longitudinal reinforcement of the beam is connected to the steel-framed concrete column through a steel sleeve; the connection method between the support negative reinforcement and the steel-framed concrete column is specifically as follows: one end of the support negative reinforcement is connected to the steel-framed concrete column through a steel sleeve.

[0010] Among them, it also includes stretching bars, which are tied to the waist bars.

[0011] It also includes bolts, which are fixed inside the first beam section through steel frames.

[0012] Among them, stirrups are also included, and the stirrups are tied to the outside of the support negative reinforcement, the waist reinforcement and the longitudinal reinforcement at the bottom of the beam.

[0013] The semi-steel beam assembly provided by the present invention improves the connection between steel-reinforced concrete structures and concrete structures through the semi-steel beam body, even when subjected to heavy loads. This allows steel-framed beam sections to connect to steel-reinforced concrete columns, while unframed concrete beam sections connect to concrete columns. This semi-steel beam assembly solves the technical challenge of achieving a natural transition between concrete and steel-framed columns (or steel columns) under heavy loads, facilitating connection, accelerating construction, and reducing project costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 is a longitudinal cross-sectional schematic diagram of a semi-steel beam assembly provided by an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Schematic diagram of the middle AA section;

[0017] Figure 3 yes Figure 1 Schematic diagram of the middle BB section;

[0018] Figure 4 yes Figure 1 Schematic diagram of the middle CC section;

[0019] Figure 5 yes Figure 1 Schematic diagram of the middle DD section;

[0020] Figure 61. It is a top view of the steel section according to an embodiment of the present invention.

[0021] Reference numerals:

[0022] 100: Semi-steel frame beam body; 101: First beam section; 102: Second beam section; 103: Steel frame; 104: Fixed-section steel; 105: Variable-section steel; 106: Support negative reinforcement; 107: Waist reinforcement; 108: Beam bottom longitudinal reinforcement; 109: Steel sleeve; 110: Tie reinforcement; 111: Studs; 112: Stirrups; 200: Steel-reinforced concrete column; 300: Concrete column. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or point connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] The following combination Figures 1 to 6 A semi-steel beam assembly according to an embodiment of the present invention is described, comprising: a semi-steel beam body 100, a steel-framed concrete column 200 (or a steel column) and a concrete column 300. The semi-steel beam body 100 comprises a first beam segment 101 and a second beam segment 102 connected to each other. The first beam segment 101 is a beam segment on which a steel frame 103 is arranged, and the first beam segment 101 is connected to the steel-framed concrete column 200 (or a steel column). The second beam segment 102 is a concrete beam segment, and the second beam segment 102 is connected to the concrete column 300.

[0026] Specifically, in this embodiment, a semi-steel beam body 100 is used to connect the steel-concrete column 200 and the concrete column 300, wherein the beam section having the steel frame 103 (i.e., the first beam section 101) is connected to the steel-concrete column 200, and the beam section without the steel frame 103 (i.e., the concrete beam section) is connected to the concrete column 300.

[0027] During construction, the length of the first beam section 101 is first set to a preset ratio of no less than the clear span of the beam, as required by the structure (this ratio can be 1 / 3 or 1 / 2, depending on the actual situation). The bending moment diagram of the beam section is then reviewed. Fixed-section steel is used for one portion of the connection between the steel frame 103 and the steel-reinforced concrete column 200, while variable-section steel is used for the other portion. The length ratio of the fixed-section steel 104 to the variable-section steel 105, as well as the starting position of the variable-section steel 105, are set as required. While the total steel usage for this span of steel frame 103 increases slightly, the amount of longitudinal reinforcement used in this section of the beam is significantly reduced, significantly reducing the difficulty of node construction.

[0028] The semi-steel beam assembly provided by the present invention improves the connection between the steel-reinforced concrete structure and the concrete structure through the semi-steel beam body 100 under heavy loads, allowing the beam section with steel frame 103 to connect to the steel-reinforced concrete column 200, and the concrete beam section without steel frame 103 to connect to the concrete column 300. The semi-steel beam assembly of this embodiment solves the technical problem of achieving a natural transition between the concrete column and the steel frame 103 (or steel column) under heavy loads, facilitating connection, accelerating construction, and reducing project costs.

[0029] In one embodiment, the semi-steel beam assembly further includes a stud 111, which is fixed to the interior of the first beam section 101 through the steel frame 103. Figure 1-4 As shown, bolts 111 are used on both the upper and lower surfaces of the steel frame 103 to fix it inside the first beam section 101.

[0030] In one embodiment, the steel frame 103 is a section steel. In this embodiment, the cross section of the section steel is an I-shaped section.

[0031] In one embodiment, Figure 6 As shown, the end of the steel section adjacent to the steel-reinforced concrete column 200 is a fixed-section steel section 104; the end of the steel section away from the steel-reinforced concrete column 200 is a variable-section steel section 105, and the length of the variable-section steel section 105 is shorter than the length of the fixed-section steel section 104. In this embodiment, the steel section is divided into two parts. One part is the steel section adjacent to the end of the steel-reinforced concrete column 200, and its cross-sectional dimensions remain unchanged. The other part is the steel section away from the end of the steel-reinforced concrete column 200, and its cross-sectional dimensions vary. This is mainly manifested in that the length of the upper surface of the variable-section steel section 105 is shorter than the length of the upper surface of the fixed-section steel section 104. The length of the upper surface of the variable-section steel section 105 can gradually decrease depending on its extension direction or be a fixed value. In this embodiment, the length of the upper surface of the variable-section steel section 105 can be 200 cm, while the length of the upper surface of the fixed-section steel section 104 is 350 cm.

[0032] In one embodiment, the length of the first beam segment 101 accounts for at least 1 / 3 of the overall length of the semi-steel frame body 100. It should be understood that the length of the first beam segment 101 to the overall length of the semi-steel frame body 100 may be set to other ratios according to actual needs, and the present invention is not limited thereto.

[0033] In one embodiment, a plurality of support negative reinforcement bars 106, waist reinforcement bars 107 and bottom longitudinal reinforcement bars 108 are provided inside the semi-steel frame beam body 100 and pass through the semi-steel frame beam body along its length direction. One end of the support negative reinforcement bars 106, waist reinforcement bars 107 and bottom longitudinal reinforcement bars 108 are connected to the steel-frame concrete column 200 by bolting, welding and anchoring, and the other end of the support negative reinforcement bars 106, waist reinforcement bars 107 and bottom longitudinal reinforcement bars 108 are anchored to the concrete column 300. In this embodiment, since there is a steel frame 103 in the first beam section 101, the steel frame 103 is easy to connect with the steel-frame concrete column 200, and the support negative reinforcement bars 106, waist reinforcement bars 107 and bottom longitudinal reinforcement bars 108 are easy to insert into the concrete column 300. Therefore, the semi-steel frame beam body 100 with such a structure can simplify and improve the connection relationship between the steel-frame concrete column 200 and the concrete column 300. Figure 2-Figure 5 As shown, the negative support bars 106 are provided at the top of the semi-steel frame body 100, the waist bars 107 are provided on the sides of the semi-steel frame body 100, and the bottom longitudinal bars 108 are provided at the bottom of the semi-steel frame body 100. As can be seen from the figure, the negative support bars 106 are provided in one row, the waist bars 107 are provided in three rows, and the bottom longitudinal bars 108 are provided in two rows. It is understood that other numbers of negative support bars 106, waist bars 107, and bottom longitudinal bars 108 can be provided according to actual load requirements, and the present invention is not limited to this.

[0034] In one embodiment, Figure 1 and Figure 2 As shown, the connection method between the bottom longitudinal reinforcement 108 of the beam and the steel-framed concrete column 200 is specifically as follows: one end of the bottom longitudinal reinforcement 108 of the beam is connected to the steel-framed concrete column 200 through a steel sleeve 109; the connection method between the support negative reinforcement 106 and the steel-framed concrete column 200 is specifically as follows: one end of the support negative reinforcement 106 is connected to the steel-framed concrete column 200 through a steel sleeve 109.

[0035] In one embodiment, the semi-steel beam assembly further includes a tie bar 110, which is tied to the waist bar 107. Figure 2-Figure 4 As shown, since there are three rows of waist reinforcements 107, in the first beam section 101, the tensioning bars 110 are only tied to the waist reinforcements 107 in the middle row, and the waist reinforcements 107 in the upper and lower rows do not need to be tied. Figure 5 As shown, in the second beam section 102, the tie bars 110 bind all three rows of waist bars 107 together to strengthen the deformation resistance of the steel skeleton.

[0036] In one embodiment, the semi-steel frame beam assembly further includes stirrups 112 , which are tied to the outside of the support negative reinforcement 106 , the waist reinforcement 107 and the beam bottom longitudinal reinforcement 108 .

[0037] In one embodiment, the cross-sectional shape of the steel-reinforced concrete column 200 is circular or quadrilateral. The cross-sectional shape of the concrete column 300 is circular or quadrilateral. It should be understood that the cross-sectional shapes of the steel-reinforced concrete column 200 and the concrete column 300 can be changed according to actual needs, and the present invention is not limited thereto.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A semi-steel beam assembly, characterized in that: include: A semi-steel beam body and a concrete column and a steel-concrete column or a steel column, wherein the semi-steel beam body includes a first beam segment and a second beam segment connected to each other, wherein the first beam segment is a beam segment provided with steel frames and is connected to the steel-concrete column or the steel column, and the second beam segment is a concrete beam segment and is connected to the concrete column; The semi-steel frame beam body is provided with a plurality of support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements running through the length direction thereof, one end of the support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements is connected to the steel frame concrete column by bolting, welding and anchoring, and the other end of the support negative reinforcements, waist reinforcements and beam bottom longitudinal reinforcements is anchored to the concrete column; It also includes stretching bars, which are tied to the waist muscles; It also includes stirrups, which are tied to the outside of the support negative reinforcement, the waist reinforcement and the beam bottom longitudinal reinforcement; The steel frame is a section steel, and the end of the section steel adjacent to the steel-reinforced concrete column is a fixed-section section steel; the end of the section steel away from the steel-reinforced concrete column is a variable-section section steel, and the length of the variable-section section steel is shorter than the length of the fixed-section section steel; The length of the first beam section is at least 1 / 3 of the entire length of the semi-steel frame beam body; It also includes a bolt, which is fixed to the inside of the first beam section through a steel frame.

2. The semi-steel beam assembly according to claim 1, characterized in that: The connection method between the bottom longitudinal reinforcement of the beam and the steel-framed concrete column is specifically as follows: one end of the bottom longitudinal reinforcement of the beam is connected to the steel-framed concrete column through a steel sleeve; the connection method between the support negative reinforcement and the steel-framed concrete column is specifically as follows: one end of the support negative reinforcement is connected to the steel-framed concrete column through a steel sleeve.

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