CN214465457U - Split type bolt - Google Patents

Abstract

A split bolt comprises a bolt cap and a screw rod, wherein the bolt cap is composed of a plurality of bolt cap part bodies, the screw rod is composed of a screw rod base and a plurality of screw rod part bodies, gaps are reserved between the adjacent bolt cap part bodies and filled with filling materials, and gaps are reserved between the adjacent screw rod part bodies and are not filled. The utility model also provides a manufacturing method of split type bolt, will excel in the bolt and cut incomplete through seam from the bolt cap to the screw rod through the lathe to set up filler material in the through seam that forms on the bolt cap. The utility model discloses still provide split type bolt's application, penetrate trompil steel sheet or steel/concrete beam with the screw rod basal portion to with gasket and nut and fastening, also increased the ductility when improving the anti bearing capacity of cutting. The utility model discloses an increase screw rod diameter by a wide margin improves the shear strength of bolt, and bending deformation through each partial portion keeps good ductility.

Description

Split type bolt

Technical Field

The utility model belongs to the technical field of the building, in particular to split type bolt.

Background

The steel-concrete combined structure is widely applied to engineering with good stress performance, convenient construction method and better comprehensive benefit. The shear connector is a key component, and the shear resistance of the shear connector directly influences the overall performance of the combined structure. The high-strength bolt is one of important types of the shear connecting piece, has the advantages of high strength, high rigidity, tight connection, easiness in installation, detachability and the like, and is a connecting piece preferably selected.

Bolted connections are used extensively in field installations of fabricated steel structures and composite structures as the primary form of engineering structural connections. However, the high reinforcement and assembly trend of building structures puts higher requirements on the performance of the connection and the node, and as high-strength steel and ultrahigh-performance concrete are applied more and more in building engineering, the shear stress increased along with the high-strength steel and the ultrahigh-performance concrete cannot be borne by the existing shear connection piece, and brittle failure is likely to occur.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model aims to provide a split bolt and preparation and application thereof, the bolt has the characteristics of high bearing capacity and good ductility, and can better meet the requirements of high-strength steel or ultra-high performance concrete connection.

In order to realize the purpose, the utility model discloses a technical scheme is:

a split bolt comprising a cap 11 and a shank 12, said cap 11 being made up of a plurality of cap body portions 111 and said shank 12 being made up of a shank base 122 and a plurality of shank body portions 121, wherein there is a gap between adjacent cap body portions 111 filled with a filler material 2 and there is a gap between adjacent shank body portions 121 which is not filled.

In addition, the utility model discloses can also have following additional technical characterstic:

the gap penetrates axially to the upper end of the screw base 122 of the bolt, and at the axial penetration position, the gap penetrates completely in the radial direction.

The width of clearance is 1 ~ 6mm, the height of screw rod basal portion 122 is 30 ~ 80 mm.

The screw 12 is a part of a non-threaded rod part and a threaded rod part, or is a threaded rod part.

The bolt cap part bodies 111 and the screw part bodies 121 are equal in number and are arranged correspondingly, that is, the gap planes of the adjacent bolt cap part bodies 111 and the gap planes of the adjacent screw part bodies 121 are in the same plane in a one-to-one correspondence manner.

The bolt cap body part 111 and the screw body part 121 are two or four.

The filling material 2 is a steel sheet, a gasket or a building structure adhesive.

The split bolt is a high-strength large hexagon bolt with the specification of M20-M48.

The utility model also provides a manufacturing method of split type bolt cuts the bolt that excels in from cap 11 to screw rod 12 through the lathe and incompletely passes through the seam to set up filler material 2 in the seam that passes through that forms on cap 11.

The utility model also provides an application of split type bolt penetrates trompil steel sheet 5 or steel/concrete beam 6 with screw rod basal portion 122 to with gasket 3 and nut 4 and fastening.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the split bolt has good ductility due to the split parts, the rigidity of each split part is small, the split bolt is easy to bend and deform, the effect of high bearing capacity and good ductility is achieved, and the performance of the structure can be better exerted.

2. The diameter of the bolt is larger than the specification of a common bolt specified by the specification, the shearing resistance bearing capacity of the bolt connecting piece is greatly improved by increasing the diameter of the screw rod, and meanwhile, the high-strength large hexagon head bolt can meet the requirement of shearing force between high-strength steel or ultrahigh-performance concrete and further meet the strength requirement of the shearing resistance connecting piece.

3. The utility model discloses the available gasket of split type bolt and nut and trompil steel sheet fastening have also increased the ductility when improving anti shear capacity.

To sum up, the utility model discloses the atress performance is good, and the construction is simple and direct, and convenient to detach satisfies high strength steel or the demand that ultra high performance concrete connects better.

Drawings

Fig. 1 is a schematic view of a split bolt provided in an embodiment of the present application.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic view of the split bolt and steel-concrete composite beam of fig. 1.

Fig. 4 is a schematic view of the split bolt of fig. 1 in a steel node connection.

Fig. 5 is a schematic view of a second split bolt provided in an embodiment of the present application.

Fig. 6 is a front view of fig. 5.

Icon: 1-split bolt; 11-a bolt cap; 111-a cap portion; 12-a screw; 121-screw split section; 122-screw base; 2-a filler material; 3-a gasket; 4-a nut; 5-opening a steel plate; 6-steel or concrete beams.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

Examples

Referring to fig. 1, an embodiment of the present application provides a split bolt 1, including: the bolt cap 11 is composed of a plurality of bolt cap part bodies 111, the screw 12 is composed of a screw base 122 and a plurality of screw part bodies 121, gaps are reserved between the adjacent bolt cap part bodies 111 and the adjacent screw part bodies 121, the gaps between the bolt cap part bodies 111 are filled with filling materials 2, the gaps between the screw part bodies 121 are not filled, and the filling materials 2 are steel sheets in the embodiment.

In application, the split bolt 1 is connected with the perforated steel plate 5 by the gasket 3 and the nut 4.

The split bolt 1 can have good ductility through the split parts, the rigidity of each split part is small, the split bolt is easy to bend and deform, the effect of high bearing capacity and good ductility is achieved, and the performance of the structure can be better exerted. The shearing resistance and bearing capacity of the bolt connecting piece are greatly improved by increasing the diameter of the screw 12, and the requirement of shearing force between high-strength steel or ultrahigh-performance concrete is met.

In the embodiment, the split bolt 1 is a high-strength large hexagon bolt, and the specification of the bolt is M20-M48, so that the strength requirement of the shear connector can be met. Wherein, the material of the bolt cap 11 and the screw 12 is 20MnTiB, ML20MnTiB or 35 VB. The material of the washer 3 and the nut 4 is 45, 35 or ML 35. The perforated steel plate 5 is made of Q235, Q345, Q420, Q460 or Q690.

In the embodiment, the split bolt 1 is a high-strength bolt which is cut from the cap 11 to the screw 12 by a machine tool and is not completely penetrated and sewn.

In the present embodiment, the plug cap 11 and the screw 12 are slit-cut by a numerical control plasma cutter or the like, cut into a plurality of plug cap part portions 111 and a plurality of screw part portions 121, and left uncut portions as screw bases 122. Wherein, the width of gap is 1 ~ 6mm, and the height of basal portion is 30 ~ 80 mm.

Specifically, the slit penetrates axially to the upper end of the screw base 12, and penetrates the bolt radially at the pipe penetration. Such a design is convenient to fill material in the gap of the cap part body 111 on the premise of meeting the use requirement. In this embodiment, the gap in the cap portion body 111 may be filled with steel sheets, shims, or building construction glue.

For example, in the split bolt 1 shown in fig. 1, the bolt specification is M22, the bolt is cut into 4 split parts, the width of the cutting slit is 2mm, an uncut area (a screw base 122) is left at the bottom of the screw, and the slit is filled with steel sheets.

For example, in the second split bolt 1 shown in fig. 4, the bolt specification is M24, the bolt is cut into 2 split parts, the width of the cutting slit is 2mm, an uncut area (a screw base 122) is left at the bottom of the screw, and the slit is filled with a steel sheet.

As the diameter of the screw 12 is increased compared with that of a common screw, the shearing strength is improved, and the bending deformation of each part can keep good ductility while the shearing-resistant bearing capacity is improved, so that the whole body is very suitable for forming a combined structure (such as a structure shown in figure 3) or a steel node (such as a structure shown in figure 4) of high-strength steel and high-strength concrete. That is, the split bolt 1 has a diameter larger than a standard of a general bolt specified by a specification, so that the shear strength can be greatly improved, and the ductility of the whole split bolt 1 can be maintained after the diameter is enlarged due to the design of the split part.

It is also possible to select the number of split parts as two (such as the second split bolt shown in fig. 5 and 6) or four (such as the split bolt shown in fig. 1), and the split parts can keep the ductility of the split bolt 1.

The screw 12 of the split bolt 1 can be a part of a non-threaded rod part and a threaded rod part, and can also be a threaded rod part.

After the processing is finished, the split bolt 1 is fastened with the perforated steel plate 5 by using the gasket 3 and the nut 4. Wherein, the aperture of the perforated steel plate adopts a standard round hole and conforms to the regulation of the allowable deviation of the hole making of the high-strength bolt connecting member of JGJ82-2001, technical Specification for connecting high-strength bolts of steel structures, 6.2.1. And a torque wrench is adopted during bolt connection, the torque is adjusted firstly, and then the bolt is fastened. The bolt connection is simple in operation, time-saving and labor-saving, and convenient to construct.

The split bolt 1 of the embodiment can be used for node connection of a steel structure and can also be used as a connecting piece of a steel-concrete combined structure, the shearing resistance and bearing capacity are high, the ductility is good, the number of bolts can be reduced, the operation is simple and convenient, the disassembly is convenient, and the construction is flexible.

In conclusion, the split bolt 1 of the present application has low rigidity of each split portion, is easier to bend and deform, and maintains good ductility. The split bolt 1 is fastened with the perforated steel plate 5 through the gasket 3 and the nut 4, the shear bearing capacity is improved, meanwhile, the ductility is increased, the performance of the structure can be better exerted, and the requirement for connection of high-strength steel or ultrahigh-performance concrete is better met.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (8)

1. A split bolt comprising a cap (11) and a shank (12), characterised in that the cap (11) is made up of a plurality of cap part portions (111) and the shank (12) is made up of a shank base (122) and a plurality of shank part portions (121), wherein there is a gap between adjacent cap part portions (111) filled with a filler material (2) and there is a gap between adjacent shank part portions (121) and no filling.

2. The split bolt according to claim 1, wherein the gap extends axially through to the upper end of the bolt shank base (122), and wherein the gap extends radially completely through at the axial through-penetration.

3. The split bolt according to claim 1, wherein the width of the gap is 1-6 mm, and the height of the screw base (122) is 30-80 mm.

4. Split bolt according to claim 1, characterised in that the threaded rod (12) is a partially unthreaded rod part and a threaded rod part, or both threaded rod parts.

5. The split bolt according to claim 1, wherein the bolt cap body parts (111) and the bolt body parts (121) are equal in number and are arranged correspondingly, namely, the clearance planes of the adjacent bolt cap body parts (111) and the clearance planes of the adjacent bolt body parts (121) are in the same plane in a one-to-one correspondence.

6. The split bolt according to claim 1 or 5, wherein the cap body portion (111) and the screw body portion (121) are two or four each.

7. The split bolt according to claim 1, characterized in that the filler material (2) is steel sheet, gasket or building construction glue.

8. The split bolt according to claim 1, which is a high-strength large hexagon head bolt having a specification of M20-M48.

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