Bolt-welding mixed connection joint between cross-shaped modularized steel column modules

Abstract

The utility model belongs to the technical field of steel structure engineering, and relates to a cross-shaped modularized steel column inter-module bolting and welding mixed connecting node, which mainly structurally comprises four lower module columns connected through connecting plates, two pored upper module columns with hand holes and two non-pored upper module columns, the upper module columns with the holes and the upper module columns without the holes are adjacently arranged, the main body structure is simple, on the basis of a conventional structure, hand holes are formed in the bottoms of the two upper module columns which are installed in an aligned mode, hand hole sealing plates are arranged at the hand holes, and then bolt connection and welding connection can be combined; the assembling mode is simple and convenient, firstly, the connecting plate is connected with the four lower module columns in a bolt mode, then, the upper module columns and the connecting plate are welded together according to the rule that the upper module columns with holes are adjacent to the upper module columns without holes, at the moment, the upper module columns which cannot be welded on the outer side are welded through the hand holes, and finally, the hand hole sealing plates are welded to the hand holes.

Description

Technical field:

[0001] The utility model belongs to the technical field of steel structure engineering, and relates to a cross-shaped modular steel column inter-module bolt-welding hybrid connection node, which adopts bolt connection and welding connection modes at the same time to improve the bearing capacity. Background technology:

[0002] Modular prefabricated steel structure is a new type of building structure that transports the box-shaped modules processed in the factory to the construction site, and then assembles the beam-column nodes between each module. It has the advantages of fast assembly speed and high construction efficiency, and is in line with the concept of green development. Since the box-shaped modules of modular prefabricated steel structure are completed in the prefabrication factory, the main work on the construction site is the connection of the beam-column nodes between modules. The gaps between the columns and the beams of modular prefabricated steel structures are small, so the space left for the installation personnel on the construction site to perform the node connection operation is small. Therefore, how to make strong node connections between modules under the premise of a small installation space is the top priority in determining its structural strength.

[0003] The connection nodes between modules in the prior art generally use complex factory-prefabricated complex connection plates or inner sleeves, supplemented by high-strength bolts to connect beams and columns, which increases the cost of component manufacturing, complicates construction and welding, prolongs the construction time, reduces installation efficiency, and is not economically beneficial. For example, Chinese Patent 202311260509.5 discloses a steel structure modular building connection node, comprising an upper module corner column component, a lower module corner column component and a connecting plate component for connecting the upper module corner column component and the lower module corner column component, wherein the upper module corner column component comprises an upper module corner column and a bottom beam arranged on the side of the upper module corner column, the lower module corner column component comprises a lower module corner column and a top beam arranged on the side of the lower module corner column, the connecting plate component comprises a connecting plate and a first energy-absorbing and shock-absorbing positioning block arranged on the upper surface of the connecting plate and a second energy-absorbing and shock-absorbing positioning block arranged on the lower surface of the connecting plate, the first energy-absorbing and shock-absorbing positioning block is used to be inserted into the inner cavity of the upper module corner column to play a positioning and energy-absorbing and shock-absorbing role in the installation of the module, and the second energy-absorbing and shock-absorbing positioning block is used to be inserted into the inner cavity of the lower module corner column to play a positioning and energy-absorbing and shock-absorbing role in the installation of the module. Chinese Patent 202311645221.X discloses a detachable connection node for modular steel structure buildings, comprising a module unit corner, a vertical node plate, a connecting plate, a vertical high-strength bolt and a lateral single-sided blind hole bolt; the module unit corner is a corner of the module unit, and each module unit includes 8 module unit corners; the module unit corner includes a module column and two module beams vertically connected to each other, a horizontal node plate, a tooth groove and a sealing plate; the module column and the module beam are connected by factory welding; the side of the module beam is welded to the horizontal node plate in advance in the factory; the tooth groove includes teeth and grooves, the groove is the gap between adjacent teeth, and the outer side of the module column is welded to the teeth in the factory; the sealing plate is arranged at the column end of the module column, and the sealing plate has a preset positioning hole; The upper and lower surfaces of the connecting plate are provided with positioning heads; in the horizontal direction, the teeth and grooves between adjacent module columns engage with each other during on-site construction, and the vertical node plate and the side wall of the module column are connected through the lateral single-sided blind hole bolts during on-site construction to complete the horizontal connection of the module unit; in the vertical direction, the horizontal node plate of the upper module unit, the connecting plate and the horizontal node plate of the lower module unit are connected through the vertical high-strength bolts during on-site construction, and the positioning holes on the closing plate and the positioning heads on the upper and lower surfaces of the connecting plate are inserted and positioned during on-site construction to complete the vertical connection of the module unit; it first realizes the connection of beams and columns on the same horizontal plane through high-strength bolts and vertical node plates, then realizes the positioning of upper and lower columns through connecting plates, closing plates and positioning pins, and finally fixes them through high-strength bolts.Chinese Patent 202110506571.X discloses a modular steel frame connection structure, including a space connector; the module units are spliced ​​by the space connector; each module unit involved in the splicing includes a vertical frame column and two horizontal frame beams, and the ends of the two frame beams are fixedly connected to the flange ends of a frame column to form a spatial right-angle structure; the ends of the frame columns and the ends of the flanges on the other two sides of the frame columns are both connecting surfaces; the space connector includes a connecting web and a connecting part corresponding to the number of module units, and the connecting parts are fixedly connected by the connecting web to form a space connector; the connecting part includes a horizontal connecting plate, a vertical connecting plate, and a vertical connecting plate. The end of the vertical connecting plate is fixedly connected to the horizontal connecting plate, the connecting surface at the end of the frame column is fixedly connected to the horizontal connecting plate, and the connecting surface at the end of the frame column flange is fixedly connected to the vertical connecting plate; when splicing, multiple module units are fixedly connected to the same space connector at the same time; the frame columns and two frame beams of the two module units spliced ​​vertically are aligned vertically respectively; when splicing in the horizontal direction, the frame columns of the two adjacent module units on the same layer are aligned in the horizontal direction; the full bolt connection of the three specifications of modular steel frames is completed on site through the reserved holes, and the beam-column module kit is not sufficiently restrained, resulting in a lack of rigidity at the node and insufficient integrity.

[0004] Therefore, the research and development of a modular prefabricated steel structure beam-column connection node that can be assembled quickly is of great significance to the further development of the modular steel frame structure system. Summary of the invention:

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art and seek to design a cross-shaped modular steel column module-to-module bolt-welded hybrid connection node, which adopts a connection method combining bolt connection and welding connection to improve the node assembly efficiency and structural strength.

[0006] In order to achieve the above-mentioned purpose, the utility model involves a main structure of a cross-shaped modular steel column module-to-module bolt-welded hybrid connection node, which includes four lower module columns connected by a connecting plate, two upper module columns with holes and two upper module columns without holes, wherein the upper module columns with holes and the upper module columns without holes are adjacent to each other, wherein the hand hole has a hand hole sealing plate, and the connecting plate is bolted to the lower module column and welded to the upper module column with holes and the upper module column without holes.

[0007] The utility model relates to a cross-shaped modular steel column module-to-module bolt-welding hybrid connection node for on-site assembly:

[0008] First, bolt the connection plate to the four lower module columns;

[0009] Then, according to the rule that the upper module columns with holes and the upper module columns without holes are adjacent, they are welded together with the connection plate. For the upper module columns with holes that cannot be welded on the outside, welding is performed through the hand holes;

[0010] Finally, weld the hand hole sealing plate to the position of the hand hole.

[0011] Compared with the prior art, the utility model has a simple main structure. On the basis of the conventional structure, hand holes are opened at the bottoms of two upper module columns installed in opposition, and hand hole sealing plates are arranged at the hand holes, so that the bolt connection and the welding connection can be combined; the assembly method is simple. First, the connecting plate is bolted to the four lower module columns. Then, according to the rule that the upper module columns with holes and the upper module columns without holes are adjacent, the upper module columns and the connecting plate are welded together. At this time, the upper module columns that cannot be welded on the outside can be welded through the hand holes. Finally, the hand hole sealing plates are welded at the hand holes; the utility model has a simple structure, low complexity, strong integrity, convenient prefabrication, high pass rate, shortens the prefabrication and on-site assembly time, has low labor intensity, avoids exposure of column corners, improves the bearing capacity, and is suitable for the connection of eight columns and sixteen beams. Description of the drawings:

[0012] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0013] Figure 2 It is a top view of the main structure of the utility model.

[0014] Figure 3 It is an exploded view of the main structure of the utility model. Specific implementation method:

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

[0016] Embodiment 1:

[0017] The main structure of the cross-shaped modular steel column module-to-module bolt-welding hybrid connection node involved in this embodiment is as follows Figure 1 and Figure 3 As shown, it includes a connecting plate 1, a lower module column 2, an upper module column with a hole 3, an upper module column without a hole 4, a hand hole 5, a hand hole sealing plate 6 and a one-way bolt 7; the lower surface of the cross-shaped connecting plate 1 is provided with four lower module columns 2 of an L-shaped structure, and the upper surface is provided with two upper module columns with a hole 3 and two upper module columns without a hole 4, the upper module columns with a hole 3 and the upper module columns without a hole 4 are arranged adjacent to each other, and hand holes 5 are arranged on the two bottom exposed sides of the upper module column 3 with a hole, and a hand hole sealing plate 6 is arranged at the hand hole 5, wherein the connecting plate 1 and the lower module column 2 are connected by mutually corresponding bolt holes and one-way bolts 7 arranged on the connecting plate 1 and the lower module column 2, and the connecting plate 1 is welded to the upper module column 3 with a hole and the upper module column 4 without a hole.

[0018] Embodiment 2:

[0019] When assembling the bolt-welded hybrid connection node between modules of the cross-shaped modular steel column involved in this embodiment:

[0020] First, four lower module columns 2 are hoisted in place, and the connecting plate 1 is fixedly connected to the lower module columns 2 by one-way bolts 7, so that the four lower module columns 2 are fixed into a whole;

[0021] Then, two upper module columns 4 without holes are placed in corresponding positions on the connecting plate 1 in sequence, and the bottom cross-section of the upper module columns 4 without holes is surrounded and the outer sides thereof are welded together with the connecting plate 1;

[0022] Sequentially place two upper module columns 3 with holes at corresponding positions on the connecting plate 1, surround the bottom cross section of the upper module column 3 with holes, and weld the exposed side surface thereof to the connecting plate 1;

[0023] The side of the upper module column 3 with holes that cannot be externally welded is welded to the connecting plate 1 through the hand hole 5;

[0024] Ensure that each side of the bottom section of the upper module column 3 with holes has an internal or external weld. Two upper module columns 3 with holes are installed in opposite positions, and two upper module columns 4 without holes are installed in opposite positions, that is, the upper module columns 3 with holes and the upper module columns 4 without holes are installed alternately. For specific styles, see Figure 2 : Upper module column 3 with holes - upper module column 4 without holes - upper module column 3 with holes - upper module column 4 without holes;

[0025] Finally, the hand hole sealing plate 6 is welded to the hand hole 5 to close the hand hole 5 .

Claims

1. A cross-shaped modular steel column module bolt-welding hybrid connection node, characterized in that: The main structure comprises lower module columns connected by connecting plates, and upper module columns with holes and upper module columns without holes with hand holes, and the upper module columns with holes and upper module columns without holes are arranged adjacent to each other.

2. The cross-shaped modular steel column inter-module bolt-welding hybrid connection node according to claim 1 is characterized in that: The connecting plate is connected to the lower module column by bolts, and is connected to the upper module column with holes and the upper module column without holes by welding.

3. The cross-shaped modular steel column inter-module bolt-welding hybrid connection node according to claim 1 or 2, characterized in that: The hand hole has a hand hole cover plate.

4. The cross-shaped modular steel column inter-module bolt-welding hybrid connection node according to claim 1 is characterized in that: Four L-shaped lower module columns are arranged on the lower surface of the cross-shaped connecting plate, and two upper module columns with holes and two upper module columns without holes are arranged on the upper surface. The upper module columns with holes and the upper module columns without holes are arranged adjacent to each other, and hand holes are arranged on the two bottom exposed sides of the upper module columns with holes, and hand hole sealing plates are arranged at the hand holes.

5. The cross-shaped modular steel column inter-module bolt-welding hybrid connection node according to claim 4 is characterized in that: The connecting plate and the lower module column are connected through corresponding bolt holes and one-way bolts arranged on the connecting plate and the lower module column.

6. The cross-shaped modular steel column module bolt-welding hybrid connection node according to claim 4 or 5, characterized in that: The connecting plate is connected to the upper module column with holes and the upper module column without holes by welding.

Images