Concrete framework structure made of composite connecting assemblies and construction method

Abstract

Disclosed is a concrete framework structure made of composite connecting assemblies. The concrete framework structure comprises a concrete framework, the concrete framework comprising a plurality of large longitudinal ribs, a plurality of small longitudinal ribs, and a plurality of cast steel assemblies. The plurality of large longitudinal ribs and the plurality of small longitudinal ribs are arranged in the length direction of the framework, and are fixedly connected by means of the plurality of cast steel assemblies to form a crisscross columnar structure having gaps. The plurality of small longitudinal ribs are located inside of the columnar structure, a plurality of hook ribs are arranged in the circumferential direction on the plurality of large longitudinal ribs located on an outer side of the columnar structure, and both the large longitudinal ribs and the small longitudinal ribs are surrounded by the hook ribs. The concrete framework structure made of composite connecting assemblies of the present invention has significant stress performance, durability, and economic performance, may be widely applied to various reinforced concrete and steel structure buildings, and is particularly suitable for large-span, heavy-load, or complex and irregular high-rise buildings and super-high-rise buildings. Promoting the popularization and application of the concrete framework structure has great practical engineering significance. The present invention further provides a construction method for the described framework structure.

Description

Concrete skeleton structure made of composite connection components and construction method Technical Field

[0001] The present invention belongs to the field of building structural parts, and in particular relates to a concrete skeleton structure made of composite connection components and a construction method thereof. Background Art

[0002] Concrete skeleton structure refers to a steel-concrete composite structure formed by arranging steel sections within the cross-section of reinforced concrete components. The usual structural form is as follows: the steel sections are located in the central cavity of the concrete skeleton and fixed in the side walls of the concrete skeleton. A number of stirrups are arranged at equal intervals along the circumference of the concrete skeleton, and the longitudinal bars and steel sections are all surrounded by the stirrups.

[0003] Currently, hook bars in conventional concrete skeleton structures provide poor restraint on the longitudinal reinforcement, resulting in a poor overall structural performance. A solution is to replace stirrups with perforated steel slats. While this significantly improves the overall structural performance, it suffers from significant technical drawbacks: First, the labor cost of installing the perforated steel slats is extremely high; second, the perforated steel slats are relatively weak in the areas bearing the load, and the cross-sectional pressure at the curved edges is high, which can damage the longitudinal reinforcement.

[0004] Therefore, it is necessary to design a concrete skeleton structure and construction method made of composite connection components to effectively protect the large longitudinal reinforcement, and the resulting steel-concrete structure has significant advantages such as high strength, high stiffness, and good seismic performance. Technical issues

[0005] First, the labor cost of installing the perforated steel strips is extremely high; second, the part of the perforated steel strips that bears force is relatively weak after the holes are made, and the cross-sectional pressure of the arc mouth is very high, which causes certain damage to the large longitudinal reinforcement. Technical Solutions

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides a concrete skeleton structure made of composite connection components and a construction method.

[0007] Specifically, the present invention relates to the following technical solutions:

[0008] The present invention provides a concrete skeleton structure made of composite connection components, including a concrete skeleton, wherein the concrete skeleton includes a plurality of large longitudinal bars, a plurality of small longitudinal bars, and a plurality of cast steel components. The plurality of large longitudinal bars and the plurality of small longitudinal bars are arranged along the length direction of the skeleton and are fixedly connected by the plurality of cast steel components to form a columnar structure with gaps therebetween. The plurality of small longitudinal bars are located inside the columnar structure, and a plurality of large longitudinal bars located outside the columnar structure are circumferentially provided with a plurality of hook bars, and the large longitudinal bars and the small longitudinal bars are all surrounded by the hook bars.

[0009] Preferably, the cast steel component includes an interlocking butt joint component and a series component. The interlocking butt joint component is used as a connector between adjacent large longitudinal reinforcements in the length direction. The interlocking butt joint component includes a U-shaped bar, an arc-shaped steel plate strip, and a first locking piece. The U-shaped bar has an arc opening, and the arc opening has a fixed structure that cooperates with the large longitudinal reinforcement to effectively prevent the large longitudinal reinforcement from sliding. The arc-shaped steel plate strip is arranged in the U-shaped bar and is flush with the opening of the U-shaped bar, and a first locking piece is provided at the joint surface of the U-shaped bar and the arc-shaped steel plate strip. The arc surfaces of the U-shaped bar and the arc-shaped steel plate strip jointly form a clamping surface for clamping and protecting the connection between adjacent large longitudinal reinforcements. The series component effectively connects several large longitudinal reinforcements arranged parallel to each other to form an overall columnar structure.

[0010] Preferably, one side of the arc-shaped steel strip is an inwardly concave arc, and the other side is a flat surface, and the flat surface is flush with the opening of the U-shaped strip.

[0011] Preferably, the series connection component includes a first series connection plate, a second series connection plate, and a third series connection plate. The first series connection plate has a U-shaped notch. A supporting square steel is fixed between one side of two adjacent first series connection plates, and a supporting reinforcement plate is fixed between the other sides of two adjacent first series connection plates. The first series connection plate, the square steel, and the reinforcement plate can be cast into an integral structure. One side of the second series connection plate is a concave arc, and the other side is a plane. The arc surface of the first series connection plate and the arc surface of the second series connection plate together form a clamping surface for clamping the protective large longitudinal reinforcement. The plane is grooved, and the third series connection plate is arranged in the groove. A second locking piece is arranged at the joint surface of the first series connection plate, the second series connection plate, and the third series connection plate.

[0012] Preferably, the first locking member is a first grid, and corresponding mounting holes are provided at the joint surface of the U-shaped strip and the arc-shaped steel plate strip, a grid is provided in the hole, and a hole is provided at one end of the grid for fixing the hook reinforcement.

[0013] Preferably, the second locking member is a connecting frame, which surrounds the first serial plate, the second serial plate, and the third serial plate to form a serial assembly, and the connecting frame and the first serial plate, the second serial plate, and the third serial plate are provided with corresponding holes, and grids are provided in the holes for seven-hole core connection.

[0014] Preferably, the hook reinforcement is provided with symmetrical hooks at both ends to hook the large longitudinal reinforcement.

[0015] Preferably, the reinforcing plate is a reinforcing unit with triangles and circles alternately arranged on both sides.

[0016] Preferably, support members are provided between adjacent reinforcing plates.

[0017] The present invention also provides a method for constructing the above-mentioned skeleton structure, comprising the following steps:

[0018] Step 1: several large longitudinal reinforcements are butted and lengthened by interlocking butt joint components;

[0019] Step 2: Two large longitudinal bars are arranged in layers from bottom to top, with multiple layers spaced apart. Several series modules are spaced apart along the length of the large longitudinal bars. The series modules between upper and lower adjacent layers are fixedly connected by square steel and reinforcing plates to form a columnar structure with multiple layers and multiple compartments.

[0020] Step 3: Install several equally spaced hook bars between the upper and lower layers of longitudinal bars. Install several equally spaced hook bars between the longitudinal bars on the same layer. Fix the hook bars at both ends of the extensions to the fence.

[0021] Step 4: Small longitudinal reinforcement is also provided at several third connecting plates to support the horizontally arranged hook reinforcements to complete the skeleton structure and wait for concrete pouring.

[0022] Preferably, the skeleton structure is a six-layer steel frame column structure with five compartments. Beneficial effects

[0023] Compared with the prior art, the concrete skeleton structure made of composite connection components and the construction method of the present invention have the following beneficial effects:

[0024] 1) Each component can be prefabricated and assembled on site. The composite cast steel components have reinforced joints, which are integrated longitudinally to firmly hold the large longitudinal reinforcement in all directions. This significantly increases the stress-bearing effect compared to perforated steel strips, ensuring integrity and greatly improving seismic performance.

[0025] 2) The butt-jointing assembly cold-joins two large longitudinal bars on the same axis, eliminating the damage to the physical properties of the steel bars caused by high-temperature welding;

[0026] 3) The construction is simple. The prefabricated cast steel skeleton parts are all prefabricated in the factory. On the construction site, the prefabricated cast steel is directly connected to the node or steel column (or transitionally connected to the concrete column), and then the hollow part inside the concrete is poured to complete the construction and installation, which will greatly improve the construction performance.

[0027] 4) Hook bars are used instead of stirrups, which greatly improves the effect of fixing the large longitudinal bars and makes them more tightly bonded to the concrete;

[0028] 5) The layered hook reinforcement layout produces a special beam overlapping effect, which greatly improves the overall stress resistance.

[0029] Generally speaking, the skeleton structure and construction method of the present invention simplify the construction process and construction difficulty, and make the skeleton structure have significant advantages in stress performance, durability, economic performance, etc., and can be widely used in various reinforced concrete and steel structure buildings, especially suitable for high-rise buildings and super high-rise buildings with large spans, heavy loads or complex and irregular shapes. Promoting its promotion and application is of great engineering practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic structural diagram of an embodiment of the present invention.

[0031] FIG2 is a schematic structural diagram of the connection of the large longitudinal reinforcement of the present invention.

[0032] FIG3 is a schematic structural diagram of the occlusal docking assembly of the present invention.

[0033] FIG4 is a schematic structural diagram of the series-connected components of the present invention.

[0034] FIG5 is a front view of FIG4 .

[0035] FIG6 is a schematic structural diagram of the first serial connection board, the second serial connection board, and the third serial connection board of the present invention.

[0036] In the figure: large longitudinal reinforcement -1, small longitudinal reinforcement -2, hook reinforcement -3, U-shaped bar -4, curved steel plate strip -5, first grid -6, first series connection plate -7, second series connection plate -8, third series connection plate -9, square steel -10, reinforcement plate -11, connecting frame -12, support plate -13, hole -14. Modes for Carrying Out the Invention

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] The technical solution of the first embodiment of the present invention is a concrete skeleton structure made of a composite connection component. Referring to Figures 2, 3, 4, 5 and 6, the present invention provides a concrete skeleton structure made of a composite connection component, including a concrete skeleton. The concrete skeleton includes a plurality of large longitudinal bars 1, a plurality of small longitudinal bars 2, and a plurality of cast steel components. The plurality of large longitudinal bars and the plurality of small longitudinal bars are arranged along the length direction of the skeleton and are fixedly connected by a plurality of cast steel components to form a crisscross columnar structure with gaps. The plurality of small longitudinal bars are located inside the columnar structure, and the plurality of large longitudinal bars located outside the columnar structure are circumferentially provided with a plurality of hook bars 3, and the large longitudinal bars and the small longitudinal bars are all surrounded by the hook bars.

[0040] The cast steel components of this embodiment include an interlocking butt joint component and a series component. The interlocking butt joint component is used as a connector between adjacent large longitudinal bars in the length direction. The interlocking butt joint component includes a U-shaped bar 4, an arc-shaped steel plate bar 5, and a first locking member. The U-shaped bar has an arc mouth, and the arc mouth has a fixed structure that matches the large longitudinal bars. The fixed structure of this embodiment is: according to the position and size of the gaps made by the two large longitudinal bars (four small openings between the two symmetrical hemispheres of the steel bar), corresponding raised parts are made to fill the gaps, which engage with the recessed parts on the large longitudinal bars to prevent the large longitudinal bars from sliding in the U bar. The arc-shaped steel plate bar is arranged in the U-shaped bar. The strip is flush with the opening of the U-shaped strip, and a first locking piece is provided at the junction of the U-shaped strip and the curved steel plate strip. The curved surfaces of the U-shaped strip and the curved steel plate strip jointly form a clamping surface for clamping and protecting the connection between adjacent large longitudinal reinforcements. The series assembly effectively connects several large longitudinal reinforcements arranged parallel to each other to form an overall columnar structure. The first locking piece of this embodiment is the first grid 6. Corresponding mounting holes are provided at the junction of the U-shaped strip and the curved steel plate strip, and a grid is provided in the hole. A hole 14 is provided at one end of the grid for fixing the hook reinforcement. Corresponding grooves are provided on the plane of the curved steel plate strip according to the position of the hole made by the U-shaped strip, and the grid passes through the square hole of the U-shaped strip and the groove of the curved steel plate strip.

[0041] Use the grid to pass through the square hole of the U-bar and the groove on the special-shaped plate for fixing.

[0042] One side of the curved steel strip in this embodiment is a concave arc, and the other side is a flat surface, which is flush with the opening of the U-shaped strip.

[0043] The series connection assembly of this embodiment includes a first series connection plate 7, a second series connection plate 8, and a third series connection plate 9. The first series connection plate has a U-shaped notch. The two adjacent first series connection plate supports are fixed with square steel 10, and a reinforcing plate 11 is provided on the other side. The first series connection plate, the square steel, and the reinforcing plate can be cast into an integral structure. One side of the second series connection plate is a concave arc, and the other side is a plane. The arc surface of the first series connection plate and the arc surface of the second series connection plate together form a clamping surface for clamping the protective large longitudinal reinforcement. The plane is grooved, and the third series connection plate is provided in the groove. A second locking piece is provided at the joint surface of the first series connection plate, the second series connection plate, and the third series connection plate.

[0044] The second locking member of this embodiment is a connecting frame 12, which surrounds the first, second and third serial plates to form a serial assembly, and the connecting frame and the first, second and third serial plates are provided with corresponding holes, and second grids are provided in the holes to perform a seven-hole core connection (not shown in the figure).

[0045] The hook bars of this embodiment are provided with symmetrical hooks at both ends to hook the large longitudinal bars.

[0046] The reinforcing plate of this embodiment is a reinforcing unit having triangles and circles alternately arranged on both sides.

[0047] In this embodiment, a support member 13 is provided between the reinforcing plates. The support member may be a triangle formed by a transverse partition and an oblique plate, and the center lines of the transverse partition and the reinforcing plate coincide with each other.

[0048] The technical solution of the second embodiment of the present invention is to provide a method for constructing the above-mentioned skeleton structure, comprising the following steps:

[0049] Step 1: several large longitudinal reinforcements are butted and lengthened by interlocking butt joint components;

[0050] Step 2: Arrange multiple layers from bottom to top with two large longitudinal bars as a layer, and arrange a number of series components at intervals along the length of the large longitudinal bars. The series components between the upper and lower adjacent layers are fixedly connected by square steel and reinforcement plates to form a columnar structure;

[0051] Step 3: Install several equally spaced hook bars between the upper and lower layers of longitudinal bars. Install several equally spaced hook bars between the longitudinal bars on the same layer. Fix the hook bars at both ends of the extensions to the fence.

[0052] Step 4: Small longitudinal reinforcement is also provided at several third connecting plates to support the horizontally arranged hook reinforcements to complete the skeleton structure and wait for concrete pouring.

[0053] The skeleton structure of this embodiment is a six-layer steel frame columnar structure with five spacing areas, that is, 12 large longitudinal bars that are interlocked and butt-jointed (to prevent overlapping of the butt joints) are divided into five "string groups" on both sides (the four areas separated by the five "string groups" are called "partition areas", and the five layers separated by six steel bars are called "partition layers", which are 1, 2, 3, 4, and 5 layers from top to bottom). Then, connecting plates are inserted into the connecting ports of the "string resistors" on both sides in parallel, and fixed with grids to form a solid steel frame. A small longitudinal bar is placed in the middle of the third string plate in each layer of the steel frame (a total of 6 layers) to support the horizontally arranged hook bars.

[0054] The embodiments of the present invention have the following advantages:

[0055] 1) Each component can be prefabricated and assembled on site. The composite cast steel components have reinforced joints, which can firmly hold the large longitudinal reinforcement in all directions. Compared with perforated steel strips, the stress-bearing effect is greatly increased, which can not only ensure the integrity but also greatly improve the seismic performance.

[0056] 2) The butt-jointing assembly cold-joins two large longitudinal bars on the same axis, eliminating the damage to the physical properties of the steel bars caused by high-temperature welding;

[0057] 3) The construction is simple. The prefabricated cast steel skeleton parts are all prefabricated in the factory. On the construction site, the prefabricated cast steel is directly connected to the node or steel column (or transitionally connected to the concrete column), and then the hollow part inside the concrete is poured to complete the construction and installation, which will greatly improve the construction performance.

[0058] 4) Hook bars are used instead of stirrups, which greatly improves the effect of fixing the large longitudinal bars and makes them more tightly bonded to the concrete;

[0059] 5) The layered hook reinforcement layout produces a special beam overlapping effect, which greatly improves the overall stress resistance;

[0060] 6) Multiple connecting frames firmly connect the load-bearing surfaces on both sides into a whole. In the plane formed by the two series components and several connecting frames, hook bars are set in the vertical and horizontal directions to make the entire cross-section produce an invisible segmented stress effect similar to that of a "bamboo node".

[0061] The skeleton structure and construction method of the present invention simplify the construction process and construction difficulty, and make the skeleton structure have significant advantages in stress performance, durability, economic performance, etc. It can be widely used in various reinforced concrete and steel structure buildings, especially suitable for high-rise buildings and super high-rise buildings with large spans, heavy loads or complex and irregular shapes. Promoting its promotion and application is of great engineering practical significance.

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A concrete skeleton structure made of composite connection components, characterized in that: It includes a concrete skeleton, which includes a number of large longitudinal bars, a number of small longitudinal bars, and a number of cast steel components. The large longitudinal bars and the small longitudinal bars are arranged along the length direction of the skeleton and are fixedly connected by a number of cast steel components to form a columnar structure with gaps. The small longitudinal bars are located inside the columnar structure, and the large longitudinal bars located outside the columnar structure are circumferentially provided with a number of hook bars. The large longitudinal bars and the small longitudinal bars are all surrounded by the hook bars.

2. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: The cast steel assembly includes an interlocking butt joint assembly and a series assembly. The interlocking butt joint assembly is used as a connector between adjacent large longitudinal reinforcements in the length direction. The interlocking butt joint assembly includes a U-shaped bar, an arc-shaped steel plate strip, and a first locking piece. The U-shaped bar has an arc opening, and the arc opening has a fixed structure that matches the large longitudinal reinforcement. The arc-shaped steel plate strip is arranged in the U-shaped bar and is flush with the opening of the U-shaped bar, and a first locking piece is provided at the joint surface between the U-shaped bar and the arc-shaped steel plate strip. The arc surfaces of the U-shaped bar and the arc-shaped steel plate strip jointly form a clamping surface for clamping and protecting the connection between adjacent large longitudinal reinforcements. The series assembly connects several large longitudinal reinforcements arranged parallel to each other to form an overall columnar structure.

3. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: One side of the curved steel strip is concave, and the other side is flat, and the flat surface is flush with the opening of the U-shaped strip.

4. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: The series connection assembly includes a first series connection plate, a second series connection plate, and a third series connection plate. The first series connection plate has a U-shaped notch. Two adjacent first series connection plates are fixed with square steel. The other sides of two adjacent first series connection plates are fixed with a reinforcement plate. One side of the second series connection plate is a concave arc, and the other side is a plane. The arc surface of the first series connection plate and the arc surface of the second series connection plate together form a clamping surface for clamping the protective large longitudinal reinforcement. The plane is grooved, and the third series connection plate is arranged in the groove. A second locking piece is arranged at the joint surface of the first series connection plate, the second series connection plate, and the third series connection plate.

5. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: The first locking piece is a first grid. Corresponding mounting holes are arranged at the joint surface of the U-shaped bar and the arc-shaped steel plate. The grid is arranged in the hole, and a hole is arranged at one end of the grid.

6. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: The second locking member is a connecting frame, and the connecting frame surrounds the first serial connection plate, the second serial connection plate, and the third serial connection plate to form a serial connection assembly.

7. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: Symmetrical hooks are provided at both ends of the hook reinforcement.

8. The concrete skeleton structure made of composite connection components according to claim 1, characterized in that: The reinforcing plates are reinforcing units with triangles and circles alternately arranged on both sides, and support members are arranged between adjacent reinforcing plates.

9. A method for constructing a concrete skeleton structure made of composite connection components, characterized in that: The following steps are involved: Step 1: several large longitudinal reinforcements are butted and lengthened by interlocking butt joint components; Step 2: Two large longitudinal bars are arranged in layers from bottom to top, with multiple layers spaced apart. Several series assemblies are spaced apart along the length of the large longitudinal bars. The series assemblies between two adjacent layers are fixedly connected by square steel and reinforcing plates to form a columnar structure with multiple layers and multiple intervals. The connecting frame is provided with corresponding through holes on the first, second, and third series plates, and grids are provided in the through holes for fixed connection. Step 3: Install several equally spaced hook bars between the upper and lower layers of longitudinal bars. Install several equally spaced hook bars between the longitudinal bars on the same layer. Fix the hook bars at both ends of the extensions to the fence. Step 4: Small longitudinal reinforcement is also provided at several third connecting plates to support the horizontally arranged hook reinforcements to complete the skeleton structure and wait for concrete pouring.

10. The method for constructing a concrete skeleton structure made of composite connection components according to claim 9, characterized in that: The skeleton structure is a six-story steel frame column structure with five bays.