Novel multifunctional composite connecting piece

Abstract

The utility model discloses a novel multifunctional composite connecting piece, belongs to the field of building heat preservation, and aims to solve the problems of an existing sandwich wallboard connecting piece. Comprising a structure body, the structure body comprises wave steel bars, vertical stirrups, anchoring ends and ultrahigh-strength concrete, the wave steel bars are in a transverse wave shape, the vertical stirrups are horizontally arranged at intervals along the wave steel bars, the ultrahigh-strength concrete enables the wave steel bars and the vertical stirrups to be poured inside, and the ultrahigh-strength concrete is in a horizontally-arranged cylinder shape; the zero phase line of the wave steel bar coincides with the axis of the ultrahigh-strength concrete, and anchoring ends are arranged at the two ends of the ultrahigh-strength concrete respectively. When the reinforced concrete pile is horizontally used, shearing force is jointly borne by the wave steel bars, the vertical stirrups and the ultrahigh-strength concrete, and pulling force is jointly borne by the wave steel bars and the fiber bodies. Experiments show that the shear resistance and the tensile property of the structural main body of the structure are close to those of a metal connecting piece, and no obvious heat bridge phenomenon exists.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building thermal insulation field especially relates to a novel multifunctional composite connecting piece. BACKGROUND

[0002] The integrated sandwich wallboard has become the most commonly used type in building envelope structure due to the combination of thermal insulation and structural functions. However, the thermal bridge phenomenon of the connecting piece in the sandwich wallboard causes excessive energy consumption of the building. To solve the thermal bridge phenomenon, technical personnel have proposed FRP connecting pieces and broken bridge connecting pieces. Although these connecting pieces effectively alleviate the thermal bridge phenomenon, their shear resistance is significantly reduced compared to metal connecting pieces, which requires larger sizes for FRP connecting pieces and broken bridge connecting pieces to compensate for the low shear bearing capacity, which consumes more raw materials and significantly increases the cost. In addition, FRP has weak high-temperature resistance, and when a fire occurs, the connecting piece made of FRP material will lose its mechanical properties, thereby posing a safety hazard. SUMMARY

[0003] The utility model aims at providing a novel multifunctional composite connecting piece to solve the problems existing in the current sandwich wallboard connecting piece. The technical scheme adopted by the utility model is as follows:

[0004] A novel multifunctional composite connecting piece, comprising a structural body, the structural body comprising a corrugated steel bar, vertical stirrups, anchoring ends, and ultra-high-strength concrete, the corrugated steel bar being in a horizontal wave shape, a plurality of vertical stirrups being arranged horizontally and spaced apart along the corrugated steel bar, the ultra-high-strength concrete being poured into the corrugated steel bar and the plurality of vertical stirrups, the ultra-high-strength concrete being in a horizontally arranged cylindrical shape, the zero-phase line of the corrugated steel bar coinciding with the axis of the ultra-high-strength concrete, and the two ends of the ultra-high-strength concrete each being provided with an anchoring end.

[0005] Further, the structural body further comprises a fiber body, and the fiber body is wrapped around the outer periphery of the ultra-high-strength concrete.

[0006] Further, the fiber body is a basalt fiber body.

[0007] Further, the fiber body is composed of six layers of fiber layers formed by helical winding of fiber bundles, and the six layers of fiber layers are defined as a first layer of fiber layer, a second layer of fiber layer, a third layer of fiber layer, a fourth layer of fiber layer, a fifth layer of fiber layer, and a sixth layer of fiber layer from inside to outside, the first layer of fiber layer is formed by helical winding of fiber bundles at a helix angle of 15°, the winding thickness of the first layer of fiber layer is 1mm, the second layer of fiber layer is formed by helical winding of fiber bundles at a helix angle of 80°, the winding thickness of the second layer of fiber layer is 0.6mm, the third layer of fiber layer and the fifth layer of fiber layer have the same structure as the first layer of limiting layer, and the fourth layer of fiber layer and the sixth layer of fiber layer have the same structure as the second layer of limiting layer.

[0008] Furthermore, it also includes a thermal insulation body, with thermal insulation bodies provided on the left and right surfaces of the main body of the structure.

[0009] Furthermore, the insulation body is a high thermal resistance aerogel coating.

[0010] Furthermore, the thickness of the insulation material is 3mm.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model is used horizontally. Shear force is borne jointly by corrugated steel bars, several vertical stirrups, and ultra-high-strength concrete, while tensile force is borne jointly by corrugated steel bars and fiber reinforced concrete. Tests have shown that the shear and tensile properties of the main structure are close to those of metal connectors, and there is no significant thermal bridging. This utility model proposes a novel multifunctional composite connector that combines thermal insulation, structural integrity, and fire resistance functions with low cost and minimal raw material usage.

[0013] 2. To completely eliminate thermal bridging, insulation materials are arranged on both sides of the main structure. For example... Figure 1 As shown. After testing, it was found that the insulation can significantly reduce the heat flow rate of the connector of this utility model, thus eliminating the thermal bridging phenomenon. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a structural diagram of the main body of the structure.

[0016] In the diagram, 1. Corrugated steel bar, 2. Vertical stirrup, 3. Anchorage end, 4. Ultra-high strength concrete, 5. Fiber structure, 6. Insulation body. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0018] The connection mentioned in the utility model is divided into fixed connection and detachable connection, the fixed connection is non-detachable connection including but not limited to edge folding connection, rivet connection, bonding connection and welding connection and other conventional fixed connection modes, the detachable connection includes but is not limited to bolt connection, buckle connection, pin connection and hinge connection and other conventional dismounting modes, when the specific connection mode is not limited, at least one connection mode can be found in the existing connection mode to realize the function, and the person skilled in the art can select according to the need. For example: the fixed connection selects welding connection, and the detachable connection selects bolt connection.

[0019] The utility model will be further explained in detail in combination with the drawings, and the following examples are the explanation of the utility model, and the utility model is not limited to the following examples.

[0020] Embodiment: as Figure 1 、 Figure 2 The utility model discloses a novel multifunctional composite connecting piece, including structural main body, the structural main body includes wave reinforcement 1, vertical stirrup 2, anchoring end 3 and super high strength concrete 4, and wave reinforcement 1 is transverse wave shape, and a plurality of vertical stirrup 2 are arranged along wave reinforcement 1 horizontally interval, and super high strength concrete 4 pours in wave reinforcement 1 and a plurality of vertical stirrup 2 in, forms unified whole, and super high strength concrete 4 is horizontally arranged cylindrical, and wave reinforcement 1 is in the midplane of super high strength concrete 4, and the zero phase line of wave reinforcement 1 coincides with the axis line of super high strength concrete 4, and the both ends of super high strength concrete 4 are equipped with anchoring end 3 respectively.

[0021] The structural main body still includes fiber body 5, and fiber body 5 is covered in the outer periphery of super high strength concrete 4. Super high strength concrete 4 pours into shape 24 hours after mould removal, first places super high strength concrete 4 in the steam curing box of 85 DEG C and steams 72 hours, and takes out super high strength concrete 4 after warm curing is completed, and then adopts fiber winding technology to wind fiber body 5 to super high strength concrete 4. Before winding, first immerse fiber body 5 in resin.

[0022] Fiber body 5 is basalt fiber body.

[0023] The fiber body 5 is composed of six layers of fiber layers formed by helical winding of fiber bundles, and the six layers of fiber layers are defined as a first layer of fiber layer, a second layer of fiber layer, a third layer of fiber layer, a fourth layer of fiber layer, a fifth layer of fiber layer and a sixth layer of fiber layer from inside to outside, the first layer of fiber layer is formed by winding fiber bundles at a helix angle of 15°, the winding thickness of the first layer of fiber layer is 1mm, the second layer of fiber layer is formed by winding fiber bundles at a helix angle of 80°, the winding thickness of the second layer of fiber layer is 0.6mm, the third layer of fiber layer and the fifth layer of fiber layer are the same as the structure of the first layer of limiting layer, and the fourth layer of fiber layer and the sixth layer of fiber layer are the same as the structure of the second layer of limiting layer. After the winding of the fiber body 5 is completed, it can be formed by standing in a constant temperature box at 50 DEG C for 24 hours, forming the structure main body.

[0024] The utility model uses horizontally, shear force is born by wave reinforcement 1, a plurality of vertical stirrup 2 and super high strength concrete 4 in common, and the tension is born by wave reinforcement 1 and fiber body 5 in common. It is found through test that the shear and tensile performance of the structure main body of the structure is close to metal connecting piece, and there is no significant thermal bridge phenomenon. The utility model provides a new multifunctional composite connecting piece, which has the functions of heat preservation-structure-fire resistance under the premise of low cost with less raw material usage.

[0025] It also includes heat preservation body 6, and the left and right surfaces of the structure main body are each provided with heat preservation body 6.

[0026] The heat preservation body 6 is a high thermal resistance aerogel coating.

[0027] The thickness of the heat preservation body 6 is 3mm.

[0028] In order to completely eliminate the thermal bridge phenomenon, the heat preservation body 6 is arranged on both sides of the structure main body. Figure 1 As shown in the figure, it is found after the test that the heat preservation body 6 can significantly reduce the heat flow transmission rate of the connecting piece of the utility model, so that the thermal bridge phenomenon disappears.

[0029] The above examples are only exemplary descriptions of the utility model, and do not limit its protection scope, and the skilled in the art can also change it locally, as long as it does not exceed the spirit and essence of the utility model, and is within the protection scope of the utility model.

Claims

1. A new multi-functional composite connector characterized by: The structure body comprises a corrugated steel bar (1), vertical stirrups (2), anchoring ends (3) and ultra-high strength concrete (4), the corrugated steel bar (1) is in a transverse wave shape, a plurality of vertical stirrups (2) are arranged horizontally and at intervals along the corrugated steel bar (1), the ultra-high strength concrete (4) is poured into the corrugated steel bar (1) and the plurality of vertical stirrups (2), the ultra-high strength concrete (4) is in a horizontally arranged cylindrical shape, the zero-phase line of the corrugated steel bar (1) coincides with the axis line of the ultra-high strength concrete (4), and the two ends of the ultra-high strength concrete (4) are respectively provided with the anchoring ends (3).

2. A new multifunctional composite connector according to claim 1, characterized in that: The structure body further comprises a fiber body (5) which is wrapped around the outer periphery of the ultra-high strength concrete (4).

3. A new multifunctional composite connector according to claim 2, characterized in that: The fiber body (5) is a basalt fiber body.

4. A new multifunctional composite connector according to claim 3, characterized in that: The fiber body (5) is composed of six fiber layers formed by helical winding of fiber bundles, the six fiber layers are sequentially defined as a first layer fiber layer, a second layer fiber layer, a third layer fiber layer, a fourth layer fiber layer, a fifth layer fiber layer and a sixth layer fiber layer from inside to outside, the first layer fiber layer is formed by winding of fiber bundles at a helical angle of 15°, the winding thickness of the first layer fiber layer is 1mm, the second layer fiber layer is formed by winding of fiber bundles at a helical angle of 80°, the winding thickness of the second layer fiber layer is 0.6mm, the third layer fiber layer and the fifth layer fiber layer are the same as the first layer fiber layer in structure, and the fourth layer fiber layer and the sixth layer fiber layer are the same as the second layer fiber layer in structure.

5. A new multifunctional composite connector according to any one of claims 2-4, characterized in that: Further comprising a heat preservation body (6), the left and right surfaces of the structure body are both provided with the heat preservation body (6).

6. A new multifunctional composite connector according to claim 5, characterized in that: The heat preservation body (6) is a high-thermal-resistance aerogel coating.

7. A new multifunctional composite connector according to claim 6, characterized in that: The thickness of the heat preservation body (6) is 3mm.

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