A connection structure for improving the connection strength of integrated steel

Abstract

The present invention discloses a connection structure for improving the connection strength of integrated steel, comprising two integrated steels to be connected, anti-expansion bolts and anti-shear pins, a first plug plate is provided on one integrated steel, a second plug plate is provided on the other integrated steel, a plurality of pin mounting holes and bolt mounting holes are provided on the first plug plate and the second plug plate, when connected, the first plug plate and the second plug plate are overlapped with each other, so that the pin mounting holes of the two are correspondingly connected, the bolt mounting holes are correspondingly connected, and there is a height difference between the connected pin mounting holes, the anti-shear pin passes through the two dislocated pin mounting holes at the same time to generate a pre-tightening force, and the anti-expansion bolt passes through the connected bolt mounting holes at the same time to tighten. The above connection structure realizes the connection between the integrated steels by fixing the plug plates on the integrated steels to each other, and adopts anti-shear pins to improve the pre-tightening force and shear resistance, and adopts anti-expansion bolts to ensure the connection reliability, which not only reduces the construction difficulty, but also improves the connection strength and improves the convenience of on-site construction.

Description

Technical Field

[0001] The invention relates to the technical field of integrated steel connection, and in particular to a connection structure for improving the connection strength of integrated steel. Background Art

[0002] At present, steel structures are increasingly used in the field of building structure technology. Various new steel structures are constantly emerging and have been applied in the engineering field. The number is also increasing, and they have broad prospects. The main advantages of new steel structures are: compared with concrete building structures, they have better applicability and feasibility, such as reducing the volume of components and increasing the use space; reducing the deadweight of the structure, reducing or completely eliminating the formwork and support required for construction; reducing embedded parts and improving the seismic performance of the structure; facilitating construction and shortening the construction period. Compared with traditional steel structures, they can save more steel, improve the stability and torsion resistance of components, increase rigidity, enhance rust resistance and fire resistance, and achieve economy and beauty.

[0003] Integrated steel structure is a type of steel structure. Traditional integrated steel structures are mainly formed by welding when connected in pairs. This method has high labor intensity, low construction efficiency, and large amounts of welding smoke emissions on site. Especially when working at high altitudes, the operation is difficult, which affects the welding quality to a certain extent, and in turn affects the connection strength of the integrated steel, which needs to be further optimized. Summary of the invention

[0004] The purpose of the present invention is to provide a connection structure that improves the connection strength of integrated steel, solves the problems caused by the above-mentioned welding method, realizes rapid splicing of integrated steel, ensures connection reliability, and meets construction requirements.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A connection structure for improving the connection strength of integrated steels, comprising two integrated steels to be connected, anti-expansion bolts and shear pins, a first plug plate is provided on one integrated steel, a second plug plate is provided on the other integrated steel, a plurality of pin mounting holes and bolt mounting holes are provided on the first plug plate and the second plug plate, when connected, the first plug plate and the second plug plate are overlapped with each other, so that the pin mounting holes and the bolt mounting holes of the two are correspondingly penetrated, and there is a height difference between the through pin mounting holes, the shear pin simultaneously passes through the two misaligned pin mounting holes to generate a pre-tightening force, and the anti-expansion bolt simultaneously passes through the through bolt mounting holes for tightening.

[0007] In particular, at least one pin mounting hole is symmetrically arranged on both sides of each bolt mounting hole to form a mounting hole group. The first plug board and the second plug board are both provided with multiple mounting hole groups, and each mounting hole group is arranged in a row along the extension direction of the plug board.

[0008] In particular, two first plug plates or two second plug plates are symmetrically arranged at the end of each integrated steel. When connected, the two first plug plates and the two second plug plates work together in pairs, the shear pins are inserted from the outside of the plug plates respectively, and the anti-expansion bolts cross the two pairs of plug plates.

[0009] In particular, the bolt mounting holes are waist-shaped holes, and the arrangement directions of the bolt mounting holes on the first plug plate and the second plug plate are perpendicular to each other.

[0010] In particular, the head end of the shear pin is tapered, and the surface is smooth or provided with thread teeth.

[0011] In particular, the first plugboard and the second plugboard both include a plugboard body, on which a connecting portion and an assembly portion are provided, the connecting portion is fixedly connected to the end of the integrated steel, and a pin mounting hole and a bolt mounting hole are provided on the assembly portion.

[0012] Particularly, the thickness of the fitting portion is greater than the thickness of the connecting portion.

[0013] Particularly, a slot is provided on the integrated steel to be connected, and the connecting part is inserted into the slot and fixed by welding.

[0014] In particular, the main body of the insert plate and the integrated steel are an integrally formed structure.

[0015] In particular, part of the preload force is directed upwards and another part is directed downwards.

[0016] In summary, the beneficial effect of the present invention is that, compared with the prior art, the connection structure for improving the connection strength of the integrated steel is fixed to each other by the connection plug plates on the integrated steel to achieve the connection between the integrated steels, and anti-expansion bolts are used to ensure the connection reliability, and shear pins are used to increase the preload force and shear resistance, which not only reduces the construction difficulty, but also improves the connection strength, meets the construction requirements, and improves the convenience of on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a connection structure for improving the connection strength of integrated steel provided by an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 Sectional view at AA;

[0019] Figure 3 yes Figure 1 Sectional view at the middle BB;

[0020] Figure 4 Schematic diagram of the opening of the first plug board provided in the embodiment of the present invention Figure 1 ;

[0021] Figure 5 The embodiment of the present invention provides Figure 4A schematic diagram of the structure of a second plugboard matching the first plugboard;

[0022] Figure 6 Schematic diagram of the opening of the first plug board provided in the embodiment of the present invention Figure 2 ;

[0023] Figure 7 Schematic diagram of the opening of the first plug board provided in the embodiment of the present invention Figure 3 ;

[0024] Figure 8 Schematic diagram of the opening of the first plug board provided in the embodiment of the present invention Figure 4 ;

[0025] Fig. 9 is a schematic structural diagram of a first integrated steel structure provided by an embodiment of the present invention;

[0026] Fig.10 is a schematic structural diagram of a second integrated steel structure provided by an embodiment of the present invention;

[0027] Fig.11 is a schematic structural diagram of a third type of integrated steel provided in an embodiment of the present invention;

[0028] Fig.12 is a schematic structural diagram of a fourth integrated steel structure provided by an embodiment of the present invention;

[0029] Fig.13 is a schematic structural diagram of a fifth integrated steel structure provided by an embodiment of the present invention;

[0030] Fig.14 is a schematic structural diagram of a sixth integrated steel structure provided by an embodiment of the present invention;

[0031] Fig.15 is a schematic structural diagram of a first type of shear pin provided by an embodiment of the present invention;

[0032] Fig.16 is a schematic structural diagram of a second type of shear pin provided by an embodiment of the present invention;

[0033] Fig.17 is a schematic structural diagram of a third type of shear pin provided by an embodiment of the present invention;

[0034] Fig.18 It is a schematic structural diagram of a fourth type of shear pin provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0036] See also Figures 1 to 8As shown, this embodiment provides a connection structure for improving the connection strength of integrated steel, which includes two integrated steels to be connected, anti-expansion bolts 2 and shear pins 3, a first plug plate 1 is provided on one integrated steel 4, and a second plug plate 1' is provided on the other integrated steel 4'. The first plug plate 1 is similar to the second plug plate 1' in structure, and the first plug plate 1 is used as an example for detailed description below. A plurality of pin mounting holes 11 and bolt mounting holes 12 are provided on both of them. When connected, the first plug plate 1 and the second plug plate 1' overlap each other, so that the pin mounting holes of the two are correspondingly connected, and the bolt mounting holes are correspondingly connected, and there is a height difference Δ between the connected pin mounting holes. The shear pin 3 passes through the two dislocated pin mounting holes at the same time to generate a pre-tightening force, wherein a part of the pre-tightening force is directed upward and the other part is directed downward, and the anti-expansion bolt 2 passes through the connected bolt mounting holes at the same time for tightening.

[0037] At least one pin mounting hole 11 is symmetrically arranged on both sides of each bolt mounting hole 12 to form a mounting hole group. The first plugboard 1 is provided with a plurality of mounting hole groups, and each mounting hole group is arranged in a row along the extension direction of the first plugboard 1 . Figure 4 The first hole opening schematic diagram is shown, in which the mounting hole group consists of a bolt mounting hole 12 and two pin mounting holes 11, and the two pin mounting holes 11 are respectively located on both sides of the bolt mounting hole 12; Figure 6 The second hole opening schematic diagram is shown, in which the mounting hole group consists of a bolt mounting hole 12 and four pin mounting holes 11, and there are two pin mounting holes 11 on each side of the bolt mounting hole 12; Figure 7 The third hole opening schematic diagram is shown, in which the mounting hole group consists of one bolt mounting hole 12 and seven pin mounting holes 11, two pin mounting holes 11 are arranged in a row on each side of one bolt mounting hole 12, and the remaining three pin mounting holes 11 are arranged in a row; Figure 8 The fourth type of hole opening schematic diagram is shown, the mounting hole group consists of a bolt mounting hole 12 and eleven pin mounting holes 11, two pin mounting holes 11 are arranged in a row on each side of a bolt mounting hole 12, the remaining three pin mounting holes 11 are arranged in a row, and the remaining four pin mounting holes 11 are arranged in a row. This similar structure is not mentioned again, and is used to improve the matching strength between the first plugboard 1 and the second plugboard 1'.

[0038] In addition, the integrated steel 4 here can be a square member composed of U-shaped steel, square tube, I-shaped member, L-shaped member, T-shaped member, etc. Figure 9-14 As shown, the present plug board structure is applicable to any structure, and only needs to be correspondingly formed or slotted.

[0039] In addition, the bolt mounting holes are preferably waist-shaped holes, and the bolt mounting holes 12 of the first plugboard 1 and the bolt mounting holes 12' on the second plugboard 1' are arranged perpendicular to each other. This waist-shaped hole structure allows the first plugboard 1 and the second plugboard 1' to be better adapted and fixed.

[0040] In order to improve the connection reliability of the shear pin 3, its head end is tapered, and the surface is smooth or provided with thread teeth, which can be specifically as follows: Figure 15-18 Four structures.

[0041] The first plugboard 1 includes a plugboard body, on which a connecting portion 13 and an assembly portion 14 are provided. The connecting portion 13 is fixedly connected to the end of the integrated steel 4 , and a pin mounting hole 11 and a bolt mounting hole 12 are provided on the assembly portion 14 .

[0042] The first plug plate 1 can be separated from the integrated steel 4, or the first plug plate 1 and the integrated steel 4 can be an integral structure. When separated, a slot 41 is provided on the integrated steel 4 to be connected, and the connecting portion 13 is inserted into the slot 41 and fixed by welding. The connection between the first plug plate 1 and the integrated steel 4 can be completed at the factory and can be directly assembled and used on site.

[0043] Since the connection portion 13 is a stress concentration point, the thickness of the assembly portion 14 should be greater than the thickness of the connection portion 13. In practice, the thickness of the connection portion 13 is slightly thicker than the plate thickness of the integrated steel 4, and the thickness of the assembly portion 14 is about twice the plate thickness of the integrated steel 4 to ensure the connection strength. Specifically, the thickness of the assembly portion 14 is proportional to the opening area thereon.

[0044] The end edge of the assembly portion 14 is provided with a guide slope 15 for easy insertion, so that the first plug board 1 and the second plug board 1' can accurately reach the assembly position during assembly.

[0045] The structure and connection method of the second plug plate 1' and the integrated steel 4' are the same as above.

[0046] According to the structure of the integrated steel, two first inserting plates 1 or two second inserting plates 1' are symmetrically arranged at the end of each integrated steel.

[0047] When connecting, the first plug plate 1 of an integrated steel 4 is spliced ​​with the second plug plate 1' of another integrated steel 4' by a crane, and the relative positions of the two integrated steels in the horizontal and vertical directions are determined; the anti-expansion bolts 2 are used to cross the bolt mounting holes 12 on both sides to achieve fastening, wherein the bolt mounting holes 12 of the first plug plate 1 are vertically arranged, and the bolt mounting holes 12' of the second plug plate 1' are horizontally arranged; there is a height difference Δ between the pin mounting holes 11 on the first plug plate 1 and the pin mounting holes 11' on the second plug plate 1', and the shear pins 3 are respectively inserted from the outer sides of the first plug plates 1 on both sides, and a pre-tightening force is generated due to plastic deformation, and the shear resistance is guaranteed.

[0048] In summary, the connection structure for improving the connection strength of the integrated steel is fixed to each other by the connection plug plates on the integrated steel to achieve the connection between the integrated steels, and anti-expansion bolts are used to ensure the connection reliability, and shear pins are used to increase the preload force and shear resistance, which not only reduces the construction difficulty, but also improves the connection strength, meets the construction requirements, and improves the convenience of on-site construction.

[0049] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A connection structure for improving the connection strength of integrated steel, characterized in that: It comprises two integrated steels to be connected, anti-expansion bolts and shear pins, a first plug plate is arranged on one integrated steel, a second plug plate is arranged on the other integrated steel, a plurality of pin mounting holes and bolt mounting holes are provided on the first plug plate and the second plug plate, when connected, the first plug plate and the second plug plate are overlapped with each other, so that the pin mounting holes of the two are correspondingly connected, the bolt mounting holes are correspondingly connected, and there is a height difference between the connected pin mounting holes, the shear pin passes through the two dislocated pin mounting holes at the same time to generate a pre-tightening force, and the anti-expansion bolt passes through the connected bolt mounting holes at the same time to be tightened; At least one pin mounting hole is symmetrically arranged on both sides of each bolt mounting hole to form a mounting hole group. The first plug board and the second plug board are both provided with a plurality of mounting hole groups, and each mounting hole group is arranged in a row along the extension direction of the plug board; Two first plug plates or two second plug plates are symmetrically arranged at the end of each integrated steel. When connected, the two first plug plates and the two second plug plates work together in pairs, the shear pins are respectively inserted from the outside of the plug plates, and the anti-expansion bolts cross the two pairs of plug plates; The first plugboard and the second plugboard both include a plugboard body, the plugboard body is provided with a connecting portion and an assembly portion, the connecting portion is fixedly connected to the end of the integrated steel, and the pin mounting hole and the bolt mounting hole are provided on the assembly portion.

2. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: The bolt mounting holes are waist-shaped holes, and the bolt mounting holes on the first plugboard and the second plugboard are arranged in directions perpendicular to each other.

3. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: The head end of the shear pin is tapered, and the surface is smooth or provided with thread teeth.

4. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: The thickness of the fitting portion is greater than the thickness of the connecting portion.

5. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: A slot is provided on the integrated steel to be connected, and the connecting part is inserted into the slot and fixed by welding.

6. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: The insert plate body and the integrated steel are an integrally formed structure.

7. The connection structure for improving the connection strength of integrated steel according to claim 1, characterized in that: A portion of the preload force is directed upward, and another portion is directed downward.

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