CN108005263A - Bolt type connecting piece for prefabricated heat-insulating wall - Google Patents

Abstract

The invention relates to a novel bolt type connecting piece for a prefabricated heat-insulating wall, which comprises two steel plates which are symmetrically arranged, wherein two ends of each steel plate are outwards bent, a plate opening is formed in a bending section of each steel plate, a screw hole is formed in the middle of each steel plate, an FRP bolt is connected to each screw hole, and the front end of each FRP bolt is in threaded connection with an FRP nut; the outer sides of the two steel plates are positioned in the screw hole area and are provided with middle anti-skidding grooves; the inner sides of the two steel plates are arranged close to the heat-insulating layer, and the outer sides of the two steel plates are arranged in the concrete. Light weight, high strength, low heat conductivity, good corrosion resistance and simple construction.

Description

New prefabricated thermal insulation wall bolted connectors

technical field

The invention belongs to the technical field of construction engineering and relates to a connector, in particular to a novel prefabricated thermal insulation wall bolt type connector.

Background technique

my country's traditional wall materials are mainly small block materials such as clay bricks and hollow bricks, which have many shortcomings such as excessive structural weight, slow construction speed, low work efficiency, and unstable construction quality. Buildings constructed with traditional wall materials use about three times as much energy as developed countries with similar climates.

In recent years, my country has gradually begun to use organic foam materials as building insulation components in buildings. In this system, organic foam materials are mostly attached to the enclosure wall. The construction is more complicated, and the fire performance is poor, which is not conducive to building. sustainable development of the industry.

At present, my country's construction industry is developing towards energy conservation and industrialization, and the development and application of prefabricated thermal insulation walls with structural and functional integration has important economic and environmental benefits.

To sum up, it is the research goal of those skilled in the art to develop a prefabricated thermal insulation FRP connector with low thermal conductivity, good corrosion resistance, and convenient installation and construction.

Contents of the invention

The object of the present invention is to provide a new prefabricated thermal insulation wall bolt type connector, which is light in weight and high in strength, low in thermal conductivity, good in corrosion resistance and easy in construction.

In order to achieve the above objectives, the technical solution adopted by the present invention is: a new type of prefabricated thermal insulation wall bolt type connector, including two symmetrically arranged steel plates, the two ends of the steel plates are bent outwards, and the bent sections of the steel plates are A plate opening is opened, and a screw hole is set in the middle of the steel plate. The screw hole is connected with an FRP bolt, and the front end of the FRP bolt is threaded with an FRP nut;

The outer sides of the two steel plates are located in the screw hole area to set the middle anti-skid groove;

The inner sides of the two steel plates are arranged close to the insulation layer, and the outer sides of the two steel plates are placed in the concrete.

Further, a steel gasket is arranged between the outer side of the steel plate and the FRP bolt or the FRP nut.

Preferably, the middle anti-skid groove is a rectangular area with the same width as the steel plate.

Further preferably, the free end of the bent section of the steel plate is wedge-shaped.

Further, the steel plate is replaced by FRP plate.

Technical effect of the present invention is:

(1) The main body connection of the connector of the present invention adopts FRP material, which reduces the shortcomings of the good thermal conductivity of the connector itself;

(2) Realize the integration of heat preservation function of connecting parts;

(3) The shear resistance is much greater than that of a connector composed of a single FRP;

(4) The connectors of the present invention under the same model can be applied to walls with different thicknesses of insulation layers.

Description of drawings

Fig. 1 is a three-dimensional structure diagram of a viewing angle of the present invention;

Fig. 2 is a three-dimensional structure diagram of another viewing angle of the present invention;

Fig. 3 is the front structural diagram of the present invention;

Fig. 4 is a three-dimensional structure diagram of another viewing angle of the present invention;

Fig. 5 is the structural representation of the present invention in wallboard;

Numbers in the figure: 1 is the steel plate, 2 is the FRP bolt, 3 is the steel gasket, 4 is the plate opening, 5 is the FRP nut, 6 is the middle anti-skid groove, 7 is the concrete, and 8 is the insulation layer.

Detailed ways

Referring to the accompanying drawings, the present invention will be further described in detail below in conjunction with specific embodiments, which are explanations rather than limitations of the present invention.

A new type of prefabricated thermal insulation wall bolt type connector, including two symmetrically arranged steel plates 1, the two ends of the steel plates 1 are bent outward, and a plate opening 3 is opened on the bent section of the steel plate 1, which is located in the middle of the steel plate 1 A screw hole is provided at the position, and an FRP bolt 2 is connected to the screw hole, and the front end of the FRP bolt 2 is threaded with an FRP nut 5;

The outer sides of the two steel plates 1 are located in the screw hole area to set the middle anti-skid groove 6;

The inner sides of the two steel plates 1 are arranged close to the insulation layer 8 , and the outer sides of the two steel plates 1 are placed in the concrete 7 .

The connecting piece of the present invention is composed of two steel plates 1, FRP bolts 2, middle anti-skid groove 6, and FRP nut 5. The steel plate 1 is formed by pouring, and both ends are bent at a certain angle, and the bending part is opened to form the steel plate opening 4. The middle part of the steel plate 1 is treated with anti-skid treatment, and the concave and convex parts are added to form the anti-skid groove 6 in the middle of the steel plate. Its structure is shown in the figure , two steel plates 1 have screw holes in the middle, and use FRP bolts 2 to connect, use FRP nuts 5 to clamp, the actual application of the connecting parts is shown in Figure 5, embedded in concrete 7 and insulation layer 8, two of the steel plates The distance between 1 can be controlled by the length of FRP bolt 2, and is used for adapting to the insulation layer 8 of various thickness.

The advantage of adopting the above structure is that the upper and lower sections of the two steel plates 1 are respectively bent to a certain angle, and are opened to increase the mechanical bite force between them and the concrete 7 . The contact between the steel plate 1 and the FRP bolt 2 is roughened, that is, a screw hole is opened in the middle of the steel plate 1, and an anti-skid groove 6 is set in the middle of the two steel plates 1 outside the screw hole area to increase its friction. In this way, the structure of the present invention is light in weight and high in strength, low in thermal conductivity, good in corrosion resistance and easy in construction.

Further, a steel washer 3 is provided between the outer side of the steel plate 1 and the FRP bolt 2 or the FRP nut 5 . The function of the steel gasket 3 is to prevent the FRP bolt 2 and the FRP nut 5 from directly contacting the steel plate 1 . Further avoiding damage to the FRP bolt 2 and ensuring the service life of the structure of the present invention.

Preferably, the middle anti-skid groove 6 is a rectangular area with the same width as the steel plate 1 . This ensures the locking of the FRP bolts 2 and the FRP nuts 5 after installation, thereby ensuring the stability of the structure of the present invention.

Further preferably, the free end of the bent section of the steel plate 1 is wedge-shaped. In this way, the effect of the mechanical interlocking force between the steel plate 1 and the concrete 7 is better.

In a further embodiment, the steel plate 1 is replaced by an FRP plate. In this way, the distance between two FRP boards can be adjusted by the length of the FRP bolt 2, and its specific length depends on the thickness of the wall board.

In the present invention, FRP is pultruded and cooled to obtain prefabricated thermal insulation wall FRP bolts 5 (and replaced FRP boards), and the FRP bolts 5 are used to connect and fix the steel plates 1 (or FRP boards) on both sides. Wherein both sides of the connector are located in the concrete 7 . The invention realizes the integration of structure and function of the connector, and has the advantages of low thermal conductivity, corrosion resistance and simple construction.

The above content is a further detailed description of the present invention in combination with specific embodiments, and it cannot be assumed that the specific embodiments of the present invention are limited thereto. For the technical field of the present invention, under the framework of the concept of the present invention, some simple evolutions can also be made, which should be regarded as belonging to the scope of patent protection determined by the claims submitted by the present invention.

Claims (5)

1. A novel prefabricated thermal insulation wall bolt type connector, characterized in that: it comprises two steel plates (1) arranged symmetrically, the two ends of the steel plates (1) are bent outwards, and the bending of the steel plates (1) A plate opening (3) is provided on the section, and a screw hole is provided in the middle of the steel plate (1). The screw hole is connected with an FRP bolt (2), and the front end of the FRP bolt (2) is threaded with an FRP nut (5) ; The outer sides of the two steel plates (1) are located in the screw hole area to provide a middle anti-skid groove (6); The inner sides of the two steel plates (1) are arranged close to the insulation layer (8), and the outer sides of the two steel plates (1) are placed in the concrete (7). 2. The new prefabricated thermal insulation wall bolt type connector according to claim 1, characterized in that: a steel gasket (3) is set between the outer side of the steel plate (1) and the FRP bolt (2) or FRP nut (5) . 3. The new prefabricated thermal insulation wall bolted connector according to claim 1 or 2, characterized in that: the middle anti-slip groove (6) is a rectangular area with the same width as the steel plate (1). 4. The new prefabricated thermal insulation wall bolted connector according to claim 1 or 2, characterized in that: the free end of the bent section of the steel plate (1) is wedge-shaped. 5. The new prefabricated thermal insulation wall bolted connector according to claim 1 or 2, characterized in that: the steel plate (1) is replaced by an FRP plate.