CN115506538A - Concrete framework structure made of composite connecting assemblies and construction method - Google Patents

Abstract

The invention discloses a concrete framework structure made of composite connecting components, which comprises a concrete framework, wherein the concrete framework comprises a plurality of large longitudinal ribs, a plurality of small longitudinal ribs and a plurality of cast steel components, the large longitudinal ribs and the small longitudinal ribs are arranged along the length direction of the framework and are fixedly connected through the plurality of cast steel components to form a criss-cross columnar structure with gaps, the small longitudinal ribs are positioned inside the columnar structure, a plurality of hook ribs are circumferentially arranged on the large longitudinal ribs positioned on the outer side of the columnar structure, and the large longitudinal ribs and the small longitudinal ribs are all surrounded by the hook ribs. The concrete skeleton structure made of the composite connecting assembly has obvious stress performance, durability and economic performance, can be widely applied to various reinforced concrete and steel structure buildings, is particularly suitable for large-span, heavy-load or complex and irregular high-rise buildings and super high-rise buildings, and has great practical engineering significance in promoting the popularization and application of the concrete skeleton structure. The invention further provides a building method of the framework structure.

Description

A concrete skeleton structure made of composite connection components and its construction method

technical field

The 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.

Background technique

Concrete skeleton structure refers to the steel-concrete composite structure formed by disposing section steel in the section of reinforced concrete members. The usual structural form is as follows: section steel is located in the central cavity of the concrete skeleton and fixed in the side wall of the concrete skeleton. There are a number of stirrups at equal intervals in the circumferential direction of the skeleton, and the longitudinal bars and section steel are located in the surround of the stirrups.

At present, the hook bars in the general concrete skeleton structure have poor binding force on the large longitudinal bars, so the effect of forming the overall structure is also poor. The solution is to replace the stirrups with perforated steel slats. Although the effect of the overall skeleton structure is significantly improved, there are major technical defects as follows: first, the labor cost of perforated steel slats is extremely high; After the hole is made, the part bearing the force is relatively weak, and the cut surface pressure of the arc is very high, which will cause certain damage to the large longitudinal rib.

Therefore, it is necessary to design a concrete skeleton structure and construction method made of composite connecting components to effectively protect large longitudinal bars, and the resulting steel concrete structure has significant advantages such as high strength, high rigidity, and good seismic performance.

Contents of the invention

Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a concrete skeleton structure made of composite connection components and a construction method.

Specifically, the present invention relates to the following technical solutions:

The invention provides a concrete skeleton structure made of composite connecting components, including a concrete skeleton, and the concrete skeleton includes several large longitudinal bars, several small longitudinal bars, several cast steel components, several large longitudinal bars, and several small longitudinal bars It is arranged along the length direction of the skeleton, and is fixedly connected by several cast steel components to form a criss-cross columnar structure with gaps. The several small longitudinal ribs are located inside the columnar structure, and several large longitudinal ribs located outside the columnar structure are circumferentially arranged with several The hook tendons, the large longitudinal tendons and the small longitudinal tendons are all surrounded by the hook tendons.

Preferably, the cast steel assembly includes a snap-butt assembly and a series assembly, the snap-butt assembly is used for connecting pieces between adjacent large longitudinal ribs in the length direction, and the snap-butt assembly includes U-shaped strips and curved steel strips , The first locking part, the U-shaped bar has an arc, and the arc has a fixed structure that matches the large longitudinal rib, which effectively prevents the sliding of the large longitudinal rib. and the joint surface of the U-shaped strip and the arc-shaped steel strip is provided with a first locking piece, and the arc-shaped surface of the U-shaped strip and the arc-shaped steel strip together form a clamping surface for clamping and protecting the connection of adjacent large longitudinal ribs , the series assembly effectively connects several large longitudinal ribs arranged parallel to each other to form an overall columnar structure.

Preferably, one side of the arc-shaped steel strip is in a concave arc shape, and the other side is a plane, and the plane is flush with the opening of the U-shaped strip.

Preferably, the series assembly includes a first series connection board, a second series connection board, and a third series connection board, the first series connection board has a U-shaped notch, and there is The supporting square steel is fixed, and the supporting reinforcement plate is fixed between the other sides of the 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 connection plate is in concave arc shape, and the other side is flat. 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 and protecting the large longitudinal rib. The plane is slotted, and the inside of the notch A third series connection board is provided, and a second locking member is provided at the joint surfaces of the first series connection board, the second series connection board and the third series connection board.

Preferably, the first locking member is a first grid, and a corresponding installation hole is provided at the joint surface of the U-shaped bar and the arc-shaped steel strip, and a grid is provided in the hole, and a hole is provided at one end of the grid for fixing the hook bar.

Preferably, the second locking member is a connection frame, and the connection frame surrounds the first series connection board, the second series connection board, and the third series connection board to form a series connection assembly, and the connection frame is connected with the first series connection board, the second series connection board Corresponding holes are arranged on the second series connection board and the third series connection board, and grids are arranged in the holes for seven-hole heart-to-heart connection.

Preferably, symmetrical hooks are provided at both ends of the hook tendons to hook the large longitudinal tendons.

Preferably, the reinforcing plate is a reinforcing unit with alternate combinations of triangles and circles on both sides.

Preferably, a supporting piece is arranged between adjacent reinforcing plates.

The present invention also provides a method for building the above skeleton structure, comprising the following steps:

Step 1: Butt and lengthen several large longitudinal ribs through occlusal butt joint components;

Step 2: The two large longitudinal bars are arranged in multiple layers at intervals from bottom to top, and several series components are arranged at intervals along the length direction of the large longitudinal bars. The series components between the upper and lower adjacent layers are fixed and connected by square steel and reinforcement plates. A columnar structure with multiple layers and multiple compartments;

Step 3, a number of equally spaced hook bars are arranged in the circumferential direction between the large longitudinal bars of the upper and lower layers, and a number of equally spaced hook bars are set between the large longitudinal bars of the same layer, and the two ends of the hook bars at the butt joint extensions are fixed on the grid;

Step 4, small longitudinal reinforcements are also provided at the third series connection plates to support the horizontally arranged hook reinforcements to complete the skeleton structure and wait for concrete to be poured.

Preferably, the skeleton structure is a six-story steel frame column structure with five compartments.

Compared with the prior art, the invention has the beneficial effects of the concrete skeleton structure and construction method made of composite connection components as follows:

1) Each component can be prefabricated and combined on site. Composite cast steel components have reinforced joints, and the longitudinal integration tightly hugs the large longitudinal ribs in all directions, which greatly increases the effect of bearing stress compared with perforated steel strips, which can not only ensure the integrity, but also greatly improve the seismic performance;

2) The docking 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;

3) The construction is simple. The prefabricated cast steel skeleton parts are all prefabricated in the factory. On the construction site, the cast steel of the prefabricated part is directly connected to the nodes or steel columns (or transitionally connected to the concrete columns), and then the hollow part inside the concrete is poured. Construction and installation, construction performance will be greatly improved;

4) Replace stirrups with hook bars, which greatly improves the effect of fixing large longitudinal bars, and is more tightly combined with concrete;

5) The layered hook reinforcement layout produces a special beam-type overlapping effect, and the overall stress resistance effect will be greatly improved.

Generally speaking, adopting the skeleton structure and construction method of the present invention simplifies the construction process and construction difficulty, so that the skeleton structure has significant advantages in terms of mechanical performance, durability, economic performance, etc., and can be widely used in various types of reinforced concrete and In steel structure buildings, it is especially suitable for long-span, heavy-load or complex, irregular high-rise buildings and super high-rise buildings. It is of great engineering practical significance to promote its application.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a structural schematic diagram of the joint of the large longitudinal reinforcement in the present invention.

Fig. 3 is a structural schematic diagram of the occlusal butt joint assembly of the present invention.

Fig. 4 is a schematic structural diagram of the serial assembly of the present invention.

Fig. 5 is a front view of Fig. 4 .

FIG. 6 is a schematic structural diagram of the first series board, the second series board and the third series board of the present invention.

In the figure: large longitudinal reinforcement-1, small longitudinal reinforcement-2, hook reinforcement-3, U-shaped strip-4, arc-shaped steel strip-5, first grid-6, first series connection plate-7, second string Connection plate-8, third series connection plate-9, square steel plate-10, reinforcement plate-11, connection frame-12, support plate-13, hole-14.

detailed description

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

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, not all of them. Based on the implementation of the present invention For example, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The technical solution of the first embodiment is a concrete skeleton structure made of composite connecting components, see Figure 2, Figure 3, Figure 4, Figure 5, and Figure 6, the present invention provides a concrete skeleton structure made of composite connecting components Skeleton structure, including a concrete skeleton, the concrete skeleton includes several large longitudinal bars 1, several small longitudinal bars 2, and several cast steel components, and several large longitudinal bars and several small longitudinal bars are arranged along the length direction of the skeleton, and passed through several cast steel The components are fixedly connected to form a criss-cross columnar structure with gaps. The several small longitudinal ribs are located inside the columnar structure, and several large longitudinal ribs located outside the columnar structure are provided with several hook ribs 3 in the circumferential direction. The large longitudinal ribs and small longitudinal ribs They are all surrounded by hook tendons.

The cast steel assembly of this embodiment includes a snap-butt assembly and a series assembly. The snap-butt assembly is used for connecting pieces between adjacent large longitudinal ribs in the length direction. The snap-butt assembly includes U-shaped bars 4, arc-shaped Steel strip 5, the first locking piece, the U-shaped strip has an arc opening, and there is a fixed structure matched with the large longitudinal reinforcement in the arc opening. The fixed structure of this embodiment is: the gap (rebar The position and size of the two symmetrical hemispheres of the circular shape (four small openings on the top of the flowers) are used to fill the gaps and make corresponding convex parts, which are occluded with the concave parts on the large longitudinal ribs to prevent the large longitudinal ribs from Sliding in the U-shaped strip, the curved steel strip is set in the U-shaped strip to be flush with the opening of the U-shaped strip, and the first locking piece is set at the joint surface of the U-shaped strip and the curved steel strip, and the U-shaped strip and the curved steel strip The curved surfaces of the steel strips jointly form a clamping surface for clamping and protecting the joints of adjacent large longitudinal ribs. The series assembly effectively connects several large longitudinal ribs arranged parallel to each other to form an overall columnar structure. The first of this embodiment The locking part is the first grid 6, and the corresponding installation hole is set at the joint surface of the U-shaped bar and the arc-shaped steel strip. According to the position of the U-shaped strip hole, set the corresponding groove, and the grid passes through the square hole of the U-shaped strip and the groove of the curved steel strip.

Use the grid to pass through the square hole of the U bar and the groove on the special-shaped board to fix it.

One side of the arc-shaped steel strip in this embodiment is in a concave arc shape, and the other side is a plane, and the plane is flush with the opening of the U-shaped strip.

The series assembly of the present embodiment comprises a first series connection board 7, a second series connection board 8, and a third series connection board 9, the first series connection board has a U-shaped notch, and two adjacent first series connection boards are used for supporting Fixing of the square steel 10, the other side is provided with a reinforcement plate 11, the first series connection plate, the square steel and the reinforcement plate can be cast into an integrated structure, one side of the second series connection plate is 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 jointly form a clamping surface for clamping and protecting the large longitudinal rib, the plane is slotted, and the third series connection plate is arranged in the slot, the first series connection plate, A second locking piece is arranged at the joint surface of the second serial board and the third serial board.

The second locking member of this embodiment is a connection frame 12, the connection frame surrounds the first series connection board, the second series connection board, and the third series connection board to form a series connection assembly, and the connection frame is connected with the first series connection board, the second series connection board Corresponding holes are arranged on the second series connection board and the third series connection board, and a second grid is arranged in the holes to carry out the seven-hole heart-to-heart connection (not shown in the figure).

Both ends of the hook tendon in this embodiment are provided with symmetrical crotches to hook the large longitudinal tendon.

The reinforcement plate in this embodiment is a reinforcement unit with alternate combinations of triangles and circles on both sides.

In this embodiment, a support member 13 is arranged between the reinforcement plates, and the support member may be a triangle formed by the transverse partition and the oblique plate, and the center line of the transverse partition and the reinforcement plate coincide.

The technical solution of the second embodiment of the present invention is to provide a method for building the above skeleton structure, including the following steps:

Step 1: Butt and lengthen several large longitudinal ribs through occlusal butt joint components;

Step 2: The two large longitudinal bars are arranged in multiple layers at intervals from bottom to top, and several series components are arranged at intervals along the length direction of the large longitudinal bars. The series components between the upper and lower adjacent layers are fixed and connected by square steel and reinforcement plates. columnar structure;

Step 3, a number of equally spaced hook bars are arranged in the circumferential direction between the large longitudinal bars of the upper and lower layers, and a number of equally spaced hook bars are set between the large longitudinal bars of the same layer, and the two ends of the hook bars at the butt joint extensions are fixed on the grid;

Step 4, small longitudinal reinforcements are also provided at the third series connection plates to support the horizontally arranged hook reinforcements to complete the skeleton structure and wait for concrete to be poured.

The skeletal structure of the present embodiment is a steel frame columnar structure with six layers of five intervals, that is, 12 large longitudinal ribs (to prevent overlapping of the butt joints) are put into five "string groups" on both sides (five The four areas separated by the "string group" are called "separation areas", and the five layers separated by six steel bars are called "interlayers" (from top to bottom are 1, 2, 3, 4, 5 layers) and then connected with The boards are respectively inserted into the "series resistance" connection ports on both sides in parallel, and fixed with grids to form a firm steel frame. A small longitudinal rib is placed in the middle of the third serially connected board in each layer of the steel frame (6 layers in total). , used to support the horizontally arranged hook tendons.

Embodiments of the present invention have the following advantages:

1) Each component can be prefabricated and used in combination on site. The composite cast steel component has a reinforced connection port, and the longitudinal reinforcement is firmly embraced in all directions in one piece, which greatly increases the effect of bearing stress compared with the perforated steel strip, which can ensure Integrity, and greatly improve the seismic performance;

2) The docking 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;

3) The construction is simple. The prefabricated cast steel skeleton parts are all prefabricated in the factory. On the construction site, the cast steel of the prefabricated part is directly connected to the nodes or steel columns (or transitionally connected to the concrete columns), and then the hollow part inside the concrete is poured. Construction and installation, construction performance will be greatly improved;

4) Replace stirrups with hook bars, which greatly improves the effect of fixing large longitudinal bars, and is more tightly combined with concrete;

5) The layered hook reinforcement layout produces a special beam-type overlapping effect, and the overall stress resistance effect will be greatly improved;

6) A plurality of connecting frames firmly connect the load-bearing surfaces on both sides into a whole. In the plane composed of two series components and several connecting frames, hook ribs are arranged vertically and horizontally, so that the entire section produces an invisible similar to The effect of segmental force on "bamboo joints".

Adopting the skeleton structure and construction method of the present invention simplifies the construction process and construction difficulty, so that the skeleton structure has significant advantages in terms of mechanical performance, durability, economic performance, etc., and can be widely used in various types of reinforced concrete and steel structure buildings , especially suitable for long-span, heavy-load or complex, irregular high-rise buildings and super high-rise buildings, and it is of great engineering practical significance to promote its application.

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 conversion made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields , are all included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. The utility model provides a concrete skeleton texture by compound coupling assembling makes, a serial communication port, including concrete skeleton, concrete skeleton include that a plurality of big muscle, a plurality of little muscle, a plurality of cast steel subassembly of indulging are indulged to a plurality of big muscle, a plurality of little muscle of indulging set up along skeleton length direction to form vertically and horizontally staggered through a plurality of cast steel subassembly fixed connection and have gapped column structure, a plurality of little muscle of indulging be located column structure's inside, be located a plurality of big muscle circumference of indulging in the column structure outside and be provided with a plurality of hook muscle, indulge the muscle greatly, indulge the muscle for a short time and all among the encirclement of hook muscle.

2. The concrete skeleton structure made of composite connection assemblies according to claim 1, wherein the cast steel assembly comprises an occlusion butt-joint assembly and a series assembly, the occlusion butt-joint assembly is used for connecting pieces between large longitudinal bars adjacent to each other in the length direction, the occlusion butt-joint assembly comprises a U-shaped strip, an arc-shaped steel plate strip and a first locking piece, the U-shaped strip is provided with an arc opening, a fixing structure matched with the large longitudinal bars is arranged in the arc opening, the arc-shaped steel plate strip is arranged in the U-shaped strip and flush with an opening of the U-shaped strip, the first locking piece is arranged at a joint surface of the U-shaped strip and the arc-shaped steel plate strip, the U-shaped strip and the arc-shaped surface of the arc-shaped steel plate strip jointly form a clamping surface for clamping and protecting the joint of the large longitudinal bars adjacent to each other, and the series assembly connects a plurality of large longitudinal bars arranged in parallel to each other to form an integral columnar structure.

3. The concrete skeleton structure made of composite connecting assemblies according to claim 1, wherein one side of the arc-shaped steel plate strip is concave arc-shaped, and the other side is a plane which is flush with the opening of the U-shaped strip.

4. The concrete framework structure made of composite connection assemblies according to claim 1, wherein the series connection assemblies comprise a first series connection plate, a second series connection plate and a third series connection plate, the first series connection plate is provided with a U-shaped opening, two adjacent first series connection plates are fixed with square steel, reinforcing plates are fixed on the other sides of the two adjacent first series connection plates, one side of the second series connection plate is in a concave arc shape, the other side of the second series connection plate is in a plane shape, the arc surface of the first series connection plate and the arc surface of the second series connection plate jointly form a clamping surface for clamping and protecting large longitudinal bars, the plane is provided with a groove, the third series connection plate is arranged in the groove opening, and a second locking piece is arranged on 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 connecting assemblies of claim 1, wherein the first locking member is a first grid, the joint surface of the U-shaped strip and the arc-shaped steel plate strip is provided with a corresponding mounting hole, a grid is arranged in the hole, and one end of the grid is provided with a hole.

6. The concrete skeleton structure of claim 1, wherein the second locking member is a connecting frame that surrounds the first, second, and third tandem plates to form a tandem assembly.

7. A concrete skeleton structure made of composite connecting assemblies according to claim 1, wherein the hooking rib is provided with symmetrical hooks at both ends.

8. The concrete skeleton structure made of composite connecting assemblies according to claim 1, wherein the reinforcing plates are reinforcing units having both sides alternately combined with triangles and circles, and the supporting members are disposed between the adjacent reinforcing plates.

9. A building method of a concrete skeleton structure made of composite connecting assemblies is characterized by comprising the following steps:

firstly, butting and lengthening a plurality of large longitudinal bars through an occlusion butting component;

step two, the two large longitudinal bars are arranged in a plurality of layers at intervals from bottom to top, a plurality of series assemblies are arranged at intervals along the length direction of the large longitudinal bars, the series assemblies between two adjacent layers are fixedly connected through square steel and reinforcing plates to form a columnar structure with a plurality of spaced areas, the connecting frame, the first series connecting plate, the second series connecting plate and the third series connecting plate are provided with corresponding through holes, and grids are arranged in the through holes for fixed connection;

step three, a plurality of hook ribs with equal intervals are circumferentially arranged between the large longitudinal ribs of the upper layer and the lower layer, a plurality of hook ribs with equal intervals are arranged between the large longitudinal ribs of the same layer, and two ends of the hook rib at the butt joint reinforced part are fixed on the grid;

and step four, small longitudinal ribs are further arranged at the third series connection plates and used for supporting the hook ribs which are transversely arranged to complete the framework structure, and concrete is to be poured.

10. A method of constructing a concrete skeleton structure made of composite connection assemblies according to claim 9, characterized in that the skeleton structure is a six-layer steel frame column structure with five compartments.

Images