Concrete frame structures manufactured with composite connecting elements and method of erecting them

Abstract

The present invention provides a concrete frame structure including a concrete frame, the concrete frame comprising a number of large vertical reinforcing bars, a number of small vertical reinforcing bars and a number of cast steel elements, the number of large vertical reinforcing bars and the number of small vertical reinforcing bars are arranged in the longitudinal direction of the frame and fixed and connected by a number of cast steel elements to form a cylindrical structure with gaps, the number of small vertical reinforcing bars are located inside the cylindrical structure, and the number of large vertical reinforcing bars located outside the cylindrical structure are provided with a number of hook reinforcing bars along the circumferential direction, so that the large vertical reinforcing bars and the small vertical reinforcing bars are all surrounded by the hook reinforcing bars, and the concrete frame structure manufactured by the composite connection element of the present invention has outstanding load-bearing performance, durability and economic performance, and can be applied to various reinforced concrete and reinforced steel structure buildings, particularly useful for a wide range of heavy-load or complex irregular high-rise and super-high-rise buildings, and has a significant process practical significance in promoting its practical application and popularization. The present invention also provides a method for erecting said frame structure.

Description

[Technical Field]

[0001] The present invention relates to the field of architectural structural components, and in particular to concrete frame structures made with composite connecting elements and methods for erecting them. [Background technology]

[0002] Concrete frame structures are composite structures made of reinforced concrete with steel sections placed within the cross section of the reinforced concrete members. In the usual structure, steel sections are placed in the cavity at the center of the concrete frame and fixed into the side walls of the concrete frame, and a number of equally spaced reinforcing bars are placed around the periphery of the concrete frame, and the vertical reinforcing bars and steel sections are all surrounded by the reinforcing bars.

[0003] Currently, the hooked reinforcing bars in common concrete frame structures have poor binding force against the large longitudinal reinforcing bars, resulting in poor integrated structure performance. The solution is to replace the hooked reinforcing bars with perforated steel strips. Although this significantly improves the integrated structure performance, there are technical deficiencies, such as the high labor costs of installing the perforated steel strips, the relatively weak pressure areas of the perforated steel strips, and the large pressure at the cut surfaces of the arc cuts, which can cause damage to the large longitudinal reinforcing bars.

[0004] Therefore, it is necessary to effectively protect the large longitudinal steel bars by designing the concrete frame structure and erection method using composite connecting elements, and the resulting steel-concrete structure has obvious advantages such as high strength, high rigidity, and good seismic performance. Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above-mentioned deficiencies of the prior art, the present invention aims to provide a concrete frame structure made with composite connecting elements and a method for erecting the same. [Means for solving the problem]

[0006] Specifically, the present invention relates to the following technical solutions: The present invention provides a concrete frame structure made of composite connecting elements, which includes a concrete frame, the concrete frame including a number of large vertical reinforcing bars, a number of small vertical reinforcing bars, and a number of cast steel elements, the number of large vertical reinforcing bars and the number of small vertical reinforcing bars being arranged in the longitudinal direction of the frame and fixed and connected by a number of cast steel elements to form a cylindrical structure intersecting vertically and horizontally with gaps, the number of small vertical reinforcing bars being located inside the cylindrical structure, and the number of large vertical reinforcing bars located outside the cylindrical structure being arranged with a number of hook reinforcing bars along the circumferential direction, so that the large vertical reinforcing bars and the small vertical reinforcing bars are all surrounded by the hook reinforcing bars, and the concrete frame structure is made of composite connecting elements,

[0007] Preferably, the cast steel element includes an interlocking docking element and a series element, the interlocking docking element is used between adjacent longitudinal reinforcing bars, the interlocking docking element includes a U-shaped steel bar, an arc-shaped steel plate bar, and a first locking element, the U-shaped steel bar has an arc notch, and the inside of the arc notch has a fixing structure that fits into the large longitudinal reinforcing bar to effectively prevent the large longitudinal reinforcing bar from sliding, and the arc-shaped steel plate bar is installed inside the U-shaped steel bar, and the cut edge of the U-shaped steel bar The face matches Furthermore, a first locking element is installed at the surface where the U-shaped steel bar and the arc-shaped steel plate bar join, and the arc-shaped surfaces of the U-shaped steel bar and the arc-shaped steel plate bar collectively form a retaining surface to hold and protect the connection points of adjacent large vertical reinforcing bars, and the series element effectively connects several large vertical reinforcing bars installed parallel to each other to form an integrated cylindrical structure.

[0008] Preferably, one side of the arc-shaped steel plate strip is an arc concave inward, and the other side is a flat surface, and the flat surface is a cut edge of the U-shaped steel strip. The face matches do.

[0009] Preferably, the series element includes a first series-connecting plate, a second series-connecting plate, and a third series-connecting plate, a U-shaped split is cut in the first series-connecting plate, a supporting angle steel is fixed between one side of two adjacent first series-connecting plates, and a supporting reinforcing plate is fixed between the other side of two adjacent first series-connecting plates, and the first series-connecting plate, angle steel, and reinforcing plate can also be cast as an integrated structure. One side of the second series-connecting plate is concave-arc-shaped and the other side is flat, and the arc-shaped surfaces of the first and second series-connecting plates collectively form a holding surface for holding and protecting the large vertical reinforcing bars, a groove is cut in the flat surface, and a third series-connecting plate is installed in the notch, and a second locking element is installed at the surface where the first, second, and third series-connecting plates join.

[0010] Preferably, the first locking element is a first fence, and a corresponding mounting hole is provided on the surface where the U-shaped steel bar and the arc-shaped steel plate bar are joined, and the first fence is installed in the mounting hole, and a hook is provided at one end of the first fence to fix the hook reinforcing bar. Hole will be installed.

[0011] Preferably, the second locking element is a connecting frame, which surrounds the first series connection plate, the second series connection plate and the third series connection plate to form a series connection element. The connecting frame has holes corresponding to the first series connection plate, the second series connection plate and the third series connection plate, and the holes are provided in the holes to form a seven-hole through-connection. second A fence will be installed.

[0012] Preferably, symmetrical hooks are provided at both ends of the hook rebar to hook the large longitudinal rebars.

[0013] Preferably, the reinforcing plate has reinforcing elements in which triangles and circles are alternately combined on both sides.

[0014] Preferably, support elements are provided between adjacent reinforcing plates.

[0015] The present invention provides Step 1: docking and extending a number of large longitudinal rebars with interlocking docking elements; Step 2: Two large vertical reinforcing bars are arranged as a single layer from top to bottom with a gap between them, and a number of series elements are arranged with a gap between them in the longitudinal direction of the large vertical reinforcing bars, and the series elements between the upper and lower adjacent layers are fixedly connected with square steel and reinforcing plates to form a cylindrical structure with a plurality of spacers in multiple layers; Between the large vertical reinforcing bars of the upper and lower layers, a number of hook reinforcing bars are installed at equal intervals along the circumferential direction, and between the large vertical reinforcing bars of the same layer, a number of hook reinforcing bars are installed at equal intervals, and both ends of the hook reinforcing bars where docking extension is performed are second Step three is fixed to the fence, To support the horizontally placed hooked reinforcing bars, small vertical reinforcing bars are further installed on some third series connecting plates, completing the frame structure and waiting for concrete pouring in step 4. There is further provided a method for erecting the above frame structure, comprising:

[0016] Preferably, the frame structure is a steel frame cylindrical structure with six layers and five spacers. [Effects of the Invention]

[0017] Compared with the prior art, the concrete frame structure and erection method made with the composite connection element in the present invention has the following beneficial effects: 1) Each component can be completed in advance and assembled on site. The composite cast steel elements have reinforcing joints that tightly surround the large vertical rebars as a whole, which significantly improves the stress distribution effect compared to punched steel strips, ensuring integration performance and greatly enhancing seismic performance. 2) The docking element cold-forms and docks two large longitudinal rebars on the same axis, preventing high-temperature welding from damaging the local properties of the rebars. 3) The construction is simple. All pre-cast steel frame parts are completed in advance in the factory. After the pre-cast steel in the pre-cast parts is directly connected to the nodes or steel columns (or temporarily connected to the concrete columns) on the construction site, the hollow part in the concrete is further cast to complete the construction and installation, which can significantly improve the construction performance. 4) By replacing the rib rebar with the hook rebar, the effect of the fixed large longitudinal rebar can be significantly improved and it can be more tightly bonded with the concrete. 5) The distribution of layered hooked rebars produces a special effect of overlapping beam types, which can greatly improve the stress resistance effect of the integration.

[0018] Overall, the frame structure and erection method of the present invention simplify the construction process and difficulty, and provide the frame structure with outstanding load-bearing capacity, durability, and economical performance. Therefore, it can be applied to various reinforced concrete and steel structure buildings, and is particularly useful for a wide range of heavy-duty or complex irregular high-rise and super-high-rise buildings, and is of great practical significance in promoting their practical application and popularization. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a diagram showing the structure of an embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing the structure of the connecting point of the large vertical reinforcing bars of the present invention. [Figure 3] 1A and 1B are diagrams showing the structure of an articulating docking element of the present invention; [Figure 4] 1A and 1B are diagrams showing the structure of a series element of the present invention. [Figure 5] FIG. 5 is a front view of FIG. [Figure 6] 3A and 3B are diagrams showing the structures of the first series-connected plate, the second series-connected plate, and the third series-connected plate of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0020] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and do not limit the present invention. The technical solutions of the embodiments of the present invention will be explained clearly and completely below with reference to the drawings. Obviously, the described embodiments are only partial embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, any embodiments obtained by a person skilled in the art without any creative work are within the scope of protection of the present invention.

[0021] The technical solution of this embodiment 1 is a concrete frame structure made with composite connecting elements. Referring to Figures 2, 3, 4, 5, and 6, the present invention provides a concrete frame structure including a concrete frame, in which the concrete frame includes a number of large vertical reinforcing bars 1, a number of small vertical reinforcing bars 2, and a number of cast steel elements, the number of large vertical reinforcing bars and the number of small vertical reinforcing bars are arranged in the longitudinal direction of the frame and fixed and connected by a number of cast steel elements to form a cylindrical structure crossing vertically and horizontally with gaps, some of the small vertical reinforcing bars are located inside the cylindrical structure, and some of the large vertical reinforcing bars located outside the cylindrical structure have a number of hook reinforcing bars 3 arranged around them, so that the large vertical reinforcing bars and the small vertical reinforcing bars are all surrounded by the hook reinforcing bars.

[0022] The cast steel element of this embodiment includes an interlocking docking element and a series element, and the interlocking docking element is used between adjacent longitudinal steel bars, and the interlocking docking element includes a U-shaped steel bar 4, an arc-shaped steel plate bar 5, and a first locking element, and the U-shaped steel bar has an arc notch. The fixing structure of this embodiment is based on the position and size of the gap (four small gaps spaced apart on two symmetrical hemispheres of the circular steel bar) made based on the two longitudinal steel bars, and the corresponding protruding part interlocks with the recess of the longitudinal steel bar to fill the gap, thereby preventing the longitudinal steel bar from sliding into the U-shaped steel bar. The arc-shaped steel plate bar is installed inside the U-shaped steel bar, and the cut of the U-shaped steel bar The face matches In addition, a first locking element is installed on the surface where the U-shaped steel bar and the arc-shaped steel plate bar join, and the arc-shaped surfaces of the U-shaped steel bar and the arc-shaped steel plate bar collectively form a holding surface to hold and protect the connection points of adjacent large vertical reinforcing bars, and the series elements effectively connect several large vertical reinforcing bars installed parallel to each other to form an integrated cylindrical structure. The first locking element in this embodiment is the first fence 6, and corresponding mounting holes are installed on the surface where the U-shaped steel bar and the arc-shaped steel plate bar join, and the mounting holes first fence 6 is installed to secure the hook rebar. first fence 6 A hole 14 is provided at one end of the arc-shaped steel strip. A corresponding notch is provided in the plane of the arc-shaped steel strip. first The fence passes through the square hole in the U-shaped steel bar and the notch in the arc-shaped steel plate bar, and first The fence is fixed.

[0023] In this embodiment, one side of the arc-shaped steel plate strip is arc-shaped and concave inward, and the other side is flat, and the flat surface is the cut edge of the U-shaped steel strip. The face matches do.

[0024] In this embodiment, the series element includes a first series connecting plate 7, a second series connecting plate 8, and a third series connecting plate 9. A U-shaped split is cut in the first series connecting plate, and two adjacent first series connecting plates are fixed with support steel bars. Reinforcement plates 11 are installed between two adjacent first series connecting plates. The first series connecting plate, steel bars, and reinforcing plate can also be cast as an integrated structure. One side of the second series connecting plate is concave and arc-shaped, and the other side is flat. The arc-shaped surfaces of the first and second series connecting plates collectively form a holding surface for holding and protecting the large vertical rebars. A groove is cut into the flat surface, and a third series connecting plate is installed in the notch. A second locking element is installed at the interface between the first, second, and third series connecting plates.

[0025] The second locking element is a connecting frame 12, which surrounds the first, second and third series connection plates to form a series connection element. The connecting frame has holes corresponding to the first, second and third series connection plates, and a second fence (not shown) is installed in the holes to form a seven-hole through-connection.

[0026] In this embodiment, symmetrical hooks are installed on both ends of the hook reinforcing bar to hook the large vertical reinforcing bars.

[0027] The reinforcing plate of this embodiment has reinforcing elements on both sides of which triangles and circles are alternately combined.

[0028] In this embodiment, a support element 13 is installed between adjacent reinforcing plates. The support element may be a triangle formed by the diaphragm and the inclined plate, and the centerlines of the diaphragm and the inclined plate are overlapped.

[0029] The technical solution of the second embodiment of the present invention is as follows: Step 1: docking and extending a number of large longitudinal rebars with interlocking docking elements; Step 2: Two large vertical reinforcing bars are arranged as a single layer from top to bottom with a gap between them, and a number of series elements are arranged with a gap between them in the longitudinal direction of the large vertical reinforcing bars, and the series elements between the upper and lower adjacent layers form a cylindrical structure with fixed connections between square steel and reinforcing plates; Step 3: A number of hook reinforcing bars are installed at equal intervals along the circumferential direction between the large vertical reinforcing bars of the upper and lower layers, and a number of hook reinforcing bars are installed at equal intervals between the large vertical reinforcing bars of the same layer, and both ends of the hook reinforcing bars at the docking extension are fixed to the second fence; To support the horizontally placed hooked reinforcing bars, small vertical reinforcing bars are further installed on some third series connecting plates, completing the frame structure and waiting for concrete pouring in step 4. There is further provided a method for erecting the above frame structure, comprising:

[0030] The frame structure of this embodiment is a six-layer, five-spacer steel frame cylindrical structure. That is, the 12 interlocking docked large vertical reinforcing bars (to prevent overlapping of docking ports) are divided into two piles and inserted into five "series connection groups" (the five "series connection groups" are divided into four sections called "partition sections." The five layers into which the six reinforcing bars are divided are called "partition layers" from top to bottom, 1, 2, 3, 4, and 5). Then, the connection ports of the "series connection groups" on both sides are inserted parallel to each other by connecting plates. second After being fixed by the fence, it is formed into a sturdy steel frame. To support the horizontally arranged hooked reinforcing bars, each layer of the steel frame (six layers in total) is fitted with small vertical reinforcing bars and installed in the third series connecting plate.

[0031] The present invention has the following beneficial effects: 1) Each component can be pre-assembled and assembled on-site. The composite cast steel elements have reinforcing joints that tightly surround the large vertical rebars as a whole, which significantly improves the stress distribution effect compared to punched steel strips, ensuring integration performance and greatly enhancing seismic performance. 2) The docking element cold-forms and docks two large longitudinal rebars on the same axis, preventing high-temperature welding from damaging the local properties of the rebars. 3) The construction is simple. All pre-cast steel frame parts are completed in advance in the factory. After the pre-cast steel in the pre-cast parts is directly connected to the nodes or steel columns (or temporarily connected to the concrete columns) on the construction site, the hollow part in the concrete is further cast to complete the construction and installation, which can significantly improve the construction performance. 4) By replacing the rib rebar with the hook rebar, the effect of the fixed large longitudinal rebar can be significantly improved and it can be more tightly bonded with the concrete. 5) The distribution of layered hooked rebars produces a special effect of overlapping beam types, which can greatly improve the stress resistance effect of the integration. 6) The bearing surfaces on both sides of the multiple connecting frameworks firmly connect the entire structure, and hooked steel bars are installed vertically and horizontally within the plane that forms the two series-connected elements and a few connecting frameworks, creating an invisible effect of divided loads on the overall cross section that resembles the "nodes of bamboo."

[0032] The frame structure and method for erecting the same of the present invention simplify the construction process and difficulty, and provide the frame structure with outstanding load-bearing performance, durability, and economical performance. Therefore, it can be applied to various reinforced concrete and steel structure buildings, and is particularly useful for a wide range of heavy-duty or complex irregular high-rise and super-high-rise buildings, and is of great practical significance in promoting its practical application and popularization.

[0033] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. Similarly, any direct or indirect application to other technical fields related to the equivalent structure or equivalent flow conversion based on the contents of the description and drawings of the present invention will fall within the patent protection scope of the present invention. [Explanation of symbols]

[0034] In the drawing, large vertical reinforcing bars-1; small vertical reinforcing bars-2; hook reinforcing bars-3; U-shaped steel bars-4; arc-shaped steel plate bars-5; first fence-6; first series connecting plate-7; second series connecting plate-8; third series connecting plate-9; angle steel-10; reinforcing plate-11; connecting frame-12; supporting plate-13; hole-14

Claims

1. A concrete frame structure including a concrete frame, the concrete frame including large vertical reinforcing bars, small vertical reinforcing bars, and cast steel elements, the large vertical reinforcing bars and the small vertical reinforcing bars are installed in the longitudinal direction of the frame and fixed and connected by the cast steel elements to form a cylindrical structure crossing vertically and horizontally with gaps, the small vertical reinforcing bars are fixed and connected by the cast steel elements and are located inside the cylindrical structure crossing vertically and horizontally with gaps, and the large vertical reinforcing bars located outside the cylindrical structure have hook reinforcing bars installed along the circumferential direction, and the large vertical reinforcing bars and the small vertical reinforcing bars are all surrounded by the hook reinforcing bars, the cast steel elements include interlocking docking elements and series elements, the interlocking docking elements are used between adjacent longitudinal reinforcing bars, the interlocking docking elements include a U-shaped steel strip, an arc-shaped steel plate strip, and a first locking element, the U-shaped steel strip has an arc notch, the interior of the arc notch has a fixing structure that fits the large longitudinal reinforcing bars, the arc-shaped steel plate strip is installed within the U-shaped steel strip so that its surface coincides with the cut end of the U-shaped steel strip, and the first locking element is installed on the surface where the U-shaped steel strip and the arc-shaped steel plate strip join, the arc-shaped surfaces of the U-shaped steel strip and the arc-shaped steel plate strip collectively form a holding surface for holding and protecting the connection points of adjacent longitudinal reinforcing bars, and the series elements fix and connect the large longitudinal reinforcing bars that are installed parallel to each other to form an integrated cylindrical structure; the series element includes a first series connection plate, a second series connection plate, and a third series connection plate, a U-shaped split is cut in the first series connection plate, a steel beam is fixed to two adjacent first series connection plates, and a reinforcing plate is fixed to the other side of the two adjacent first series connection plates, one side of the second series connection plate is arc-shaped concave inward, and the other side of the second series connection plate is flat, the arc-shaped surface of the first series connection plate and the arc-shaped surface of the second series connection plate collectively form a holding surface for holding and protecting the large vertical reinforcing bars, a groove is machined on the flat surface, and the third series connection plate is installed in the notch, and a second locking element is installed on the surface where the first series connection plate, the second series connection plate, and the third series connection plate are connected, surrounding the first series connection plate, the second series connection plate, and the third series connection plate to form the series connection element; A concrete frame structure manufactured using composite connection elements characterized by the above.

2. A concrete frame structure manufactured using the composite connection element described in claim 1, characterized in that one side of the arc-shaped steel plate strip is arc-shaped with a concave inward arc, and the other side of the arc-shaped steel plate strip is flat, and the flat surface coincides with the surface of the cut end of the U-shaped steel bar.

3. The concrete frame structure manufactured with composite connecting elements according to claim 1, characterized in that the first locking element is a first fence, a corresponding mounting hole is provided on the surface where the U-shaped steel bar and the arc-shaped steel plate bar are connected, the first fence is installed in the mounting hole, and a hole for fixing a hook reinforcing bar is provided at one end of the first fence.

4. 2. The concrete frame structure manufactured with composite connection elements according to claim 1, wherein the second locking element is a connection frame, and the connection frame surrounds the first series connection plate, the second series connection plate, and the third series connection plate to form a series connection element.

5. 2. The concrete frame structure manufactured with composite connection elements according to claim 1, wherein symmetrical hooks are installed on both ends of the hooked reinforcing bars.

6. The concrete frame structure manufactured with composite connecting elements as described in claim 1 is characterized in that the reinforcing plates have reinforcing elements in which triangles and circles are alternately combined on both sides, and support elements are installed between adjacent reinforcing plates.

7. Step 1: docking and extending the large longitudinal reinforcing bars with an interlocking docking element; Step 2: the two large vertical reinforcing bars are arranged in a single layer from top to bottom with a gap between them, and series elements are arranged with a gap between them in the longitudinal direction of the large vertical reinforcing bars, and the series elements between the upper and lower adjacent layers form a cylindrical structure with multiple spacers in multiple layers by fixedly connecting the square steel and the reinforcing plate, and the connecting frame has corresponding through holes in the first series connecting plate, the second series connecting plate and the third series connecting plate, and a second fence is installed in the through hole for fixed connection; Step 3: Hooked reinforcing bars are installed at equal intervals along the circumferential direction between the large vertical reinforcing bars of the upper and lower layers, and hooked reinforcing bars are installed at equal intervals between the large vertical reinforcing bars of the same layer, and both ends of the hooked reinforcing bars at the docking extension are fixed to the second fence; Step 4: small vertical reinforcing bars are further installed on the third series connection plate to support the horizontally arranged hook reinforcing bars, thereby completing the frame structure and waiting for concrete pouring; A method for erecting a concrete frame structure made with composite connection elements, comprising:

8. The frame structure is a steel frame cylindrical structure with six layers and five spacers; 8. A method for erecting a concrete frame structure made with composite connection elements according to claim 7.

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