Inter-module full-bolt connection node with L-shaped connecting piece at column end

Abstract

The utility model belongs to the technical field of steel structure connection engineering, and particularly relates to an inter-module full-bolt connection node with column ends provided with L-shaped connecting pieces, a main body structure comprises four lower-layer module columns and upper-layer module columns which are connected through a horizontal connecting plate, a steel plate of a rectangular structure is provided with a position punching hole to obtain the horizontal connecting plate, and the lower-layer module columns and the upper-layer module columns are connected through the horizontal connecting plate. Position punching is set on angle steel, 45-degree corner cutting treatment is conducted on the edges of the two sides to obtain connecting pieces, after column foot welding plates formed through an integrated forming process are welded to upper-layer columns, bottom cross beams and bottom longitudinal beams are connected with the upper-layer columns, machining is conducted to form upper-layer module columns, lower-layer columns are connected with top cross beams and top longitudinal beams, machining is conducted to obtain lower-layer module columns, and the upper-layer module columns and the lower-layer module columns are welded to the lower-layer columns. The four lower-layer module columns and the horizontal connecting plates can be connected in a fastened mode through one-way bolts, the horizontal connecting plates, the lower-layer module columns, the upper-layer module columns and the connecting pieces can be connected through high-strength bolts, and the four upper-layer module columns can be connected through split bolts.

Description

Technical field:

[0001] The utility model belongs to the technical field of steel structure connection engineering, and specifically relates to a full-bolt connection node between modules with an L-shaped connector at a column end, and a modular steel structure is fully bolted through a component with an L-shaped connector at a column foot. Background technology:

[0002] With the continuous development of the construction industry, modular steel structures have gradually attracted people's attention as an emerging form of construction. This form of construction adopts standardized modular units, which can achieve fast and efficient construction through combination and connection. It has the advantages of high structural strength, short construction period, and easy maintenance. It is particularly suitable for large-scale urban construction and is widely used in various construction fields, such as residential, commercial buildings, public facilities, etc. In urban renewal and redevelopment, modular steel structures are favored for their fast and efficient construction characteristics. At the same time, with the continuous innovation of architectural design, modular steel structures are increasingly widely used in landscape architecture, landmark buildings and other fields. Compared with traditional building forms, it has obvious advantages: first, modular steel structures use prefabricated modules, with fast construction speed and short cycle; second, modular steel structures can be highly customized to meet the functional requirements of different buildings; in addition, modular steel structures also have the advantages of environmental protection, energy saving, and recyclability.

[0003] In modular steel buildings, the node connection method is crucial. It not only connects the various module units, but also bears external forces from different directions, which directly affects the stability and safety of the entire building structure. Common node connection methods include welding, bolt connection, etc. For example, Chinese Patent 202210199035.7 discloses a beam-column connection structure of a modular steel structure building, which is composed of a beam-column node connector and a beam-column module unit. The beam-column node connector includes a bearing plate, and the upper and lower planes of the bearing plate are vertically connected with a positioning steel plate with a cross-shaped cross-section. The two steel plates of the positioning steel plates are arranged opposite to each other and are close to the end of the bearing plate. Columnar steel members are respectively arranged on the bearing plates on both sides of each positioning steel plate; the beam-column module unit is composed of a frame column and a frame beam, and the frame column is a square tube steel structure member , a notch is provided in the center of one side of one or both ends of the frame beam, the frame beam is an H-shaped steel, the end faces of the frame beam are respectively connected to a side corresponding to the notch and an adjacent side of the frame column, and holes matching the columnar steel member are provided on the flanges corresponding to the columnar steel member of the frame beam; the notch of the frame column of the beam-column module unit is sleeved on the limiting steel plate of the beam-column connection node, and the hole of the frame beam is sleeved on the columnar steel member of the beam-column connection node, so that one beam-column connection node connects eight beam-column module units, that is, a beam-column connection structure of "eight columns and sixteen beams". Chinese Patent No. 202311096609.9 discloses a compression expansion self-locking modular steel structure module connection node, which is used to connect an upper module column and a lower module column, and includes an expansion plate, an upper holding plate, and a lower holding plate, which are arranged at the bottom of the upper module column and coaxially arranged up and down; the lower holding plate is coaxially arranged with the upper holding plate and a compression expansion screw is fixed in the middle thereof, the expansion screw includes an expansion screw solid rod, a circle of expansion screw hollow umbrella portions with an oblique inclination angle are fixed on the circumferential edge of the expansion screw solid rod, and an expansion screw guide rod is coaxially fixed in the middle of the expansion screw solid rod; a small through hole is opened in the middle of the expansion plate for only the expansion screw guide rod to pass through and to adapt to it, and a large through hole is opened in the middle of the upper holding plate and the lower holding plate for the expansion screw to pass through and to adapt to it; a gap is left between the expansion plate and the upper holding plate to ensure that the expansion screw has sufficient expansion space.Chinese Patent No. 202310635480.8 discloses an L-shaped steel pipe column modular steel structure module connection node, the main structure includes an upper module column and a lower module column connected by each other, the upper module column and the lower module column are both cross-shaped structures, the connecting piece is a M-shaped structure, the upper module column is composed of four upper corner columns of the L-shaped structure, the lower module column is composed of four lower corner columns of the L-shaped structure, the upper corner columns and the lower corner columns are arranged one by one, and the connecting piece is composed of a horizontal connecting plate with holes, a cross-shaped connecting plate arranged on the upper and lower surfaces, and an equal-limb angle steel arranged on the side. The upper corner column is welded by an upper pipe column of L-shaped cold-bent thin-walled steel that has been punched, a floor beam of an H-shaped structure, an upper cover plate of an L-shaped structure that has been punched, and a pin arranged thereon. The lower corner column is welded by a lower pipe column of L-shaped cold-bent thin-walled steel that has been punched, a ceiling beam of an H-shaped structure, and a lower cover plate of an L-shaped structure that has been punched. The pin enhances the initial shear stiffness of the connection node and positions the upper module column and the lower module column. The connector is connected to the upper module column and the lower module column through through bolts and preset holes. However, the design of the connection nodes between the modules of the modular steel structure in the above-mentioned patented product and the prior art is complex, the integrity is not strong, the use function is not practical, and the assembly and disassembly between the modules are cumbersome. Therefore, the research and development of a connection node with excellent force performance, high construction efficiency, and in line with the "strong column and weak beam" principle is of great significance to the development of the modular steel structure system. Summary of the invention:

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, develop and design a full-bolt connection node between modules with L-shaped connectors at the column ends, simplify the connection process, and enhance the connection strength between the upper and lower modules of the steel structure.

[0005] In order to achieve the above-mentioned purpose, the utility model relates to a main structure of a full-bolt connection node between modules with an L-shaped connector at the column end, which comprises four lower module columns and an upper module column connected by a horizontal connecting plate, and a connector connected to the horizontal connecting plate, the lower module column and the upper module column; wherein the connector can limit the lower module column, the horizontal connecting plate and the lower module column are fastened and connected by a one-way bolt, the horizontal connecting plate, the lower module column, the upper module column and the connector are fastened and connected by high-strength bolts, and the upper module columns are fastened and connected by tension bolts.

[0006] The construction process of a full bolt connection node between modules with L-shaped connectors at column ends involved in the utility model is as follows:

[0007] First, use one-way bolts to fasten the four lower module columns to the horizontal connection plate;

[0008] Then, the horizontal connection plate, the lower module column, the upper module column and the connection piece are fastened and connected using high-strength bolts;

[0009] Finally, the four upper module columns are fastened together using tension bolts.

[0010] Compared with the prior art, the utility model is simple to manufacture: holes are punched at set positions on the steel plate of the rectangular structure to obtain a horizontal connecting plate, holes are punched at set positions on the angle steel, and 45° beveling is performed on the edges on both sides to obtain a connecting piece, after the column foot welding plate formed by the one-piece molding process is welded to the upper column, the bottom cross beam and the bottom longitudinal beam are connected to the upper column to form an upper module column, and the lower column is connected to the top cross beam and the top longitudinal beam to obtain a lower module column; the construction is convenient: the four lower module columns can be fastened and connected to the horizontal connecting plate by using a one-way bolt, the horizontal connecting plate, the lower module column, the upper module column and the connecting piece can be connected by using a high-strength bolt, and the four upper module columns can be connected by using a tension bolt; the utility model has strong integrity, comfortable use function, cheap assembly and disassembly between modules, and is easy to promote and use. Description of the drawings:

[0011] Figure 1 It is a schematic diagram of the main structural principle of the utility model.

[0012] Figure 2 It is an exploded view of the main structure of the utility model.

[0013] Figure 3 It is a partial structural schematic diagram of the utility model.

[0014] Figure 4 The utility model is a schematic diagram of the main structural principle of the column base welding plate. Specific implementation method:

[0015] The present invention will be further described below through embodiments and in conjunction with the accompanying drawings.

[0016] Embodiment 1:

[0017] The main structure of a full bolt connection node between modules with an L-shaped connector at the column end involved in this embodiment includes a horizontal connection plate 1, a lower module column 2, an upper module column 3, a connector 4, a one-way bolt 5, a high-strength bolt 6 and a tension bolt 7;

[0018] The lower surface of the horizontal connecting plate 1 is connected to the four lower module columns 2, and the upper surface is connected to the four upper module columns 3. Two L-shaped connecting pieces 4 for limiting the lower module columns 2 are arranged on the periphery of the four lower module columns 2 on the lower surface of the horizontal connecting plate 1; the horizontal connecting plate 1 is connected to the lower module columns 2 by a one-way bolt 5, the horizontal connecting plate 1, the lower module columns 2, the upper module columns 3 and the connecting piece 4 are connected by a high-strength bolt 6, and the upper module columns 3 are connected by tension bolts 7;

[0019] Sixteen bolt holes are provided on the horizontal connecting plate 1, wherein four inner one-way bolt holes 11 are provided on each of the two diagonal lines, and one outer high-strength bolt hole 12 is provided on each of the two sides of the four corners;

[0020] The main structure of the lower module column 2 includes a lower column 21, a top cross beam 22, a top longitudinal beam 23, a top plate 24 and a one-way bolt hole 25; the upper parts of two adjacent side surfaces of the lower column 21 are respectively provided with a top cross beam 22 and a top longitudinal beam 23, and the top surface is provided with a top plate 24, the top cross beam 22 and the top longitudinal beam 23 are perpendicular, and two obliquely arranged one-way bolt holes 25 are provided on a diagonal line of the top plate 24;

[0021] The main structure of the upper module column 3 includes an upper column 31, a bottom cross beam 32, a bottom longitudinal beam 33, a column foot welding plate 34 and a through bolt hole 35; the lower parts of the two adjacent side surfaces of the upper column 31 are respectively provided with a bottom cross beam 32 and a bottom longitudinal beam 33, a column foot welding plate 34 is provided on the outer side of the bottom surface, two through bolt holes 35 are provided on the side surface of the upper column 31, the through bolt holes 35 on the two adjacent side surfaces are staggered, the through bolt holes 35 on the two parallel side surfaces correspond to each other, the bottom cross beam 32 and the bottom longitudinal beam 33 are perpendicular, wherein the main structure of the column foot welding plate 34 includes a side steel plate 341 and a bottom steel plate 342 of an L-shaped structure vertically connected to each other, and a welding plate high-strength bolt hole 343 is provided on each of the side steel plate 341 and the bottom steel plate 342;

[0022] The main structure of the connecting member 4 includes an angle steel plate 41 and high-strength bolt holes 42 . The two angle steel plates 41 are vertically connected to each other, and two high-strength bolt holes 42 are arranged on the angle steel plate 41 .

[0023] The eight inner one-way bolt holes 11 involved in this embodiment are divided into four groups, corresponding to the one-way bolt holes 25 on the four lower module columns 2 respectively;

[0024] The eight outer high-strength bolt holes 12 are divided into four groups, corresponding to the welding plate high-strength bolt holes 343 on the column base welding plate 34 and the high-strength bolt holes 42 on the connecting member 4;

[0025] The side steel plate 341 and the bottom steel plate 342 are formed into a column foot welding plate 34 by an integrated molding process;

[0026] The outer edge of the angle steel plate 41 is chamfered at 45°.

[0027] The construction process of a fully bolted node between modules with L-shaped connectors at column ends involved in this embodiment is as follows:

[0028] First, four lower module columns 2 are hoisted to the set positions in sequence, the horizontal connecting plate 1 is placed at the corresponding position, and the inner one-way bolt hole 11 and the one-way bolt hole 25 are connected with the one-way bolt 5 to fasten the horizontal connecting plate 1 to the lower module column 2;

[0029] Then, the four upper module columns 3 are hoisted to the corresponding positions in sequence, and at the same time, the connector 4 is overlapped on the bottom steel plate 342, and the high-strength bolt holes 12, the high-strength bolt holes 343 and the high-strength bolt holes 42 of the outer side are connected in sequence using high-strength bolts 6, and the horizontal connecting plate 1, the lower module column 2, the upper module column 3 and the connector 4 are fastened;

[0030] Finally, the tension bolts 7 are used to connect the tension bolt holes 35 to fasten the four upper module columns 3 .

Claims

1. A fully bolted node between modules with L-shaped connectors at column ends, characterized in that: The main structure includes four lower module columns and an upper module column connected by a horizontal connecting plate, and connecting pieces connected to the horizontal connecting plate, the lower module columns and the upper module columns, and the connecting pieces limit the lower module columns.

2. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 1 is characterized in that: The horizontal connecting plate is connected to the lower module column by one-way bolts.

3. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 2 is characterized in that: The horizontal connecting plate, the lower module column, the upper module column and the connecting parts are connected by high-strength bolts.

4. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 3 is characterized in that: The upper module columns are connected by tension bolts.

5. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 1, characterized in that: The lower surface of the horizontal connecting plate is connected to the four lower module columns, and the upper surface is connected to the four upper module columns. Two L-shaped connecting pieces are arranged on the periphery of the four lower module columns on the lower surface of the horizontal connecting plate.

6. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 5, characterized in that: Sixteen bolt holes are provided on the horizontal connecting plate, among which four inner one-way bolt holes are respectively provided on the two diagonal lines, and one outer high-strength bolt hole is respectively provided on both sides of the four corners.

7. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 6 is characterized in that: The main structure of the lower module column includes a lower column, a top cross beam, a top longitudinal beam, a top plate and a one-way bolt hole; a top cross beam and a top longitudinal beam are respectively arranged on the upper parts of the two adjacent sides of the lower column, and a top plate is arranged on the top surface. The top cross beam and the top longitudinal beam are perpendicular, and two obliquely arranged one-way bolt holes are arranged on a diagonal line of the top plate.

8. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 7, characterized in that: The main structure of the upper module column includes an upper column, a bottom cross beam, a bottom longitudinal beam, a column base welding plate and through bolt holes; the lower parts of the two adjacent side surfaces of the upper column are respectively provided with a bottom cross beam and a bottom longitudinal beam, a column base welding plate is provided on the outer side of the bottom surface, and two through bolt holes are provided on the side surface of the upper column, the through bolt holes on the two adjacent side surfaces are staggered, the through bolt holes on the two parallel side surfaces correspond to each other, the bottom cross beam and the bottom longitudinal beam are vertical, wherein the main structure of the column base welding plate includes a side steel plate and a bottom steel plate of an L-shaped structure vertically connected to each other, and a welding plate high-strength bolt hole is provided on each of the side steel plate and the bottom steel plate.

9. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 8, characterized in that: The main structure of the connecting piece includes an angle steel plate and a high-strength bolt hole. Two angle steel plates are vertically connected to each other, and two high-strength bolt holes are arranged on the angle steel plate.

10. The full bolt connection node between modules with L-shaped connectors at column ends according to claim 9, characterized in that: The eight inner one-way bolt holes are divided into four groups, corresponding to the one-way bolt holes on the four lower module columns; the eight outer high-strength bolt holes are divided into four groups, corresponding to the high-strength bolt holes on the column base welding plate and the high-strength bolt holes on the connecting parts; the side steel plate and the bottom steel plate are formed into the column base welding plate through an integrated molding process; the outer edge of the angle steel plate is set with a 45° cut angle.

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