Steel structure modular assembly type building detachable connecting joint and assembly method

Abstract

The invention discloses a steel structure modular assembly type building detachable connecting joint and an assembly method.The connecting joint comprises an upper layer module and a lower layer module which are connected through a middle connecting part, the upper layer module and the lower layer module each comprise a layer corner piece and a structural beam, and the connecting part comprises a connecting plate; the structural beams on the corresponding sides of the upper-layer module and the lower-layer module are connected with each other through bolts penetrating through the connecting plates, and cross-shaped positioning holes are formed in the connecting plates. The connecting part further comprises a connecting piece used for locking and unlocking, the connecting piece comprises a positioning piece matched with the cross-shaped positioning hole and a locking piece used for achieving mechanical locking of the upper-layer corner piece and the lower-layer corner piece, and the locking piece can synchronously rotate relative to the positioning piece. The problems that the construction efficiency is affected due to the fact that an existing connecting joint assembly technology is tedious and the cyclic utilization rate is low due to the fact that existing connecting joints are assembled irreversibly are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of modular buildings, and in particular to a detachable connection node of a modular assembled building that can be quickly locked and disassembled, and also to an assembly method for a detachable connection node of a modular assembled building with a steel structure. Background Art

[0002] As a new type of prefabricated building, steel structure modular building is driving the construction industry to transform towards industrialized manufacturing with its significant advantages such as high degree of integration, short construction period, and green environmental protection. Its core features are detachable and reusable, which not only ensures the strength and stability of the structural connection, but also meets the needs of relocation and reorganization during the entire life cycle of the building. The connection between corner pieces is the key force transmission node between module units, and its design must ensure that the main structural components are not damaged during the disassembly process.

[0003] However, due to the limited operating space between modules, traditional detachable methods such as bolt connection are not easy to implement. In current engineering practice, two main connection methods are used: (1) Welding connection technology: By directly welding the column and the corner piece to form a rigid node, it has the advantages of direct force transmission and high rigidity. However, this method increases the on-site construction time and requires demolition work during dismantling, which seriously affects the reusability of the components. (2) Concrete pouring connection: Pouring concrete in the gap between the module corner pieces to form an integral connection can improve the integrity of the structure, but there are problems such as complex on-site wet operations and the need to crush concrete during dismantling, which also restricts the recycling of the module. It can be seen that although welding and pouring processes can ensure the connection strength, they both have low construction efficiency and cannot ensure the recycling and sustainable construction of the module. Summary of the invention

[0004] The present invention proposes a detachable connection node and assembly method for a modular steel structure assembled building, the purposes of which are: 1. to solve the problem that the assembly process of existing connection nodes is complicated and affects the construction efficiency; 2. to solve the problem of low recycling rate caused by irreversible assembly of existing connection nodes.

[0005] The technical solution of the present invention is as follows: A detachable connection node of a modular prefabricated building with a steel structure, comprising an upper module and a lower module, which are connected by an intermediate connection component, wherein the upper module and the lower module both comprise corner pieces and structural beams, wherein the connection component comprises a connection plate, wherein the structural beams on corresponding sides of the upper module and the lower module are connected to each other by bolts passing through the connection plate, wherein a cross positioning hole is provided on the connection plate; wherein the connection component further comprises a connection piece for locking and unlocking, wherein the middle section of the connection piece is a positioning piece cooperating with the cross positioning hole, and the two ends are locking pieces cooperating with the corner piece for realizing mechanical locking of the upper and lower corner pieces, wherein the two locking pieces can rotate synchronously relative to the positioning piece; wherein the bottom surface of the upper corner piece and the top surface of the lower corner piece are both provided with a straight slot hole for the locking piece to pass through, and the width of the straight slot hole is less than the length of the transverse slot of the cross positioning hole.

[0006] As a further improvement of the present invention, the length of the longitudinal slot of the cross positioning hole is greater than the length of the transverse slot thereof.

[0007] As a further improvement of the present invention, the connecting member includes a connecting shaft, which passes through the positioning member and is rotatably connected thereto, and a locking member is fixed at each end.

[0008] As a further improvement of the present invention, the upper portion and the lower portion of the connecting shaft are respectively provided with threaded sections for threaded connection with the locking pieces on the corresponding sides.

[0009] As a further improvement of the present invention, the positioning member includes a first positioning plate and a second positioning plate, the first positioning plate is adapted to the transverse groove of the cross positioning hole, and the second positioning plate is adapted to the longitudinal groove of the cross positioning hole.

[0010] As a further improvement of the present invention, the thickness of the first positioning plate is less than or equal to the thickness of the connecting plate, and the thickness of the second positioning plate is greater than the thickness of the connecting plate.

[0011] As a further improvement of the present invention, a transverse through hole is provided in the middle of the second positioning plate for the first positioning plate to pass through, and circular through holes are provided in the overlapping parts of the middle of the first positioning plate and the middle of the second positioning plate for the connecting shaft to pass through.

[0012] As a further improvement of the present invention, a side hole for observation and operation is provided on the outer side of the corner piece.

[0013] The present invention also provides a method for assembling detachable connection nodes of a steel structure modular assembled building: The first step is to place the connecting plate on the top surface of the lower module, ensuring that the longitudinal groove of the cross positioning hole on the connecting plate is aligned with the slotted hole on the corner piece, and then insert the locking piece at the bottom of the assembled connecting piece through the longitudinal groove of the cross positioning hole into the slotted hole below, and adjust the rotating positioning piece to match the cross positioning hole, so that the lower locking piece can completely enter the corner piece of the lower module. At this time, the positioning piece is restricted by the top surface of the corner piece and fixed in the cross positioning hole.

[0014] The second step is to hoist the upper module to the corresponding position and drop it down, so that the upper locking piece passes through the slotted hole on the bottom surface of the upper module corner piece and enters the interior of the upper corner piece.

[0015] The third step is to rotate the locking piece of the connecting piece so that the angle between it and the longitudinal groove of the cross positioning hole is greater than 0, thereby completing the locking.

[0016] Compared with the prior art, the present invention has the following positive effects: (1) The present invention realizes the rapid alignment and locking of the upper and lower module corner pieces through the cooperation between the cross-shaped positioning pieces and the cross-shaped positioning holes of the connecting plate, and the cooperation between the slotted holes on the contact surface of the corner pieces and the locking pieces, and then realizes rapid locking and unlocking through the synchronously rotating locking pieces, which significantly improves the assembly efficiency and facilitates disassembly, so that each module can be recycled.

[0017] (2) The present invention achieves the dual functions of positioning locking and mechanical locking simultaneously through a single rotation action by synchronously rotating the upper and lower locking members that are threadedly connected to the connecting shaft, thereby ensuring the force uniformity and stability of the connection node.

[0018] (3) In the scheme where the thickness of the second positioning plate is greater than the thickness of the connecting plate, the top and bottom of the second positioning plate will be embedded in the upper and lower slotted holes, thereby connecting the upper and lower corner pieces and the middle connecting plate into one, thereby improving the installation accuracy and lateral load-bearing capacity.

[0019] (4) The longitudinal grooves and transverse grooves of different lengths in the cross positioning hole form a multi-directional limiting mechanism, making the connection more stable and improving the overall deformation resistance of the connection node. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 An exploded view of a detachable connection node assembly in an embodiment of the present invention; Figure 2 This is a stereoscopic diagram of a detachable connection node after assembly in an embodiment of the present invention; Figure 3 It is a cross-sectional view of the detachable connection node after assembly in an embodiment of the present invention (connector locked state); Figure 4 for Figure 3 A local enlarged view of the node A in the middle; Figure 5 A three-dimensional diagram of a connecting member in a locking position according to an embodiment of the present invention; Figure 6 It is an exploded view of the connecting member in the embodiment of the present invention.

[0021] Explanation of the reference numerals: 101, column; 102, structural beam; 200, corner piece; 201, slotted hole; 202, side hole; 300, connecting piece; 310, locking piece; 320, positioning piece; 321, first positioning plate; 322, second positioning plate; 330, connecting shaft; 400, connecting plate; 401, cross positioning hole. DETAILED DESCRIPTION

[0022] The technical scheme and technical effects of the present invention are described in detail below in conjunction with the embodiments and drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0023] like Figure 1 As shown, a detachable connection node of a steel structure modular assembled building includes an upper module and a lower module symmetrically arranged, which are connected by an intermediate connecting component.

[0024] The upper module and the lower module respectively include vertically arranged columns 101 and horizontally arranged structural beams 102. The columns 101 of the upper and lower modules are arranged opposite to each other, and the structural beams 102 of the upper and lower modules are arranged opposite to each other. The structural beams 102 and the columns 101 on the same module are connected by corner pieces 200. The corner pieces 200 are provided with side holes 202 for observation and operation.

[0025] The connection component includes a connection plate 400 , and the structural beams 102 on the corresponding sides of the upper module and the lower module are connected to each other by bolts passing through the connection plate 400 . A cross positioning hole 401 is provided on the connection plate 400 .

[0026] Combination Figure 2 , Figure 3 and Figure 4 As shown, the connecting component also includes a connecting piece 300 for fast rotation locking and unlocking with the corner piece 200. The connecting piece 300 is a three-section split structure, the middle section is a positioning piece 320 that cooperates with the cross positioning hole 401 to limit the position, and the two ends are locking pieces 310 that cooperate with the corner piece 200 to achieve mechanical locking of the upper and lower corner pieces 200, and the two locking pieces 310 can flexibly rotate synchronously relative to the positioning piece 320.

[0027] As a preferred embodiment of the present invention, Figure 5 and Figure 6As shown, the connecting member 300 includes a connecting shaft 330 for connecting the locking member 310 and the positioning member 320 in series. Specifically, the connecting shaft 330 is a three-section connecting structure, the upper section and the lower section are threaded sections, and the two sections of the thread are respectively connected to a locking member 310, and the middle section is a bare rod, and the middle section is rotatably connected to the positioning member 320 that matches the cross positioning hole 401. The positioning member 320 includes a first positioning plate 321 and a second positioning plate 322, and a circular through hole for the connecting shaft 330 to pass through is opened at the corresponding position in the middle of the first positioning plate 321 and the second positioning plate 322, the first positioning plate 321 is adapted to the transverse groove of the cross positioning hole 401, the second positioning plate 322 is adapted to the longitudinal groove of the cross positioning hole 401, and a transverse through hole for the first positioning plate 321 to pass through is opened in the middle of the second positioning plate 322. The thickness of the first positioning plate 321 is less than or equal to the thickness of the connecting plate 400, and the thickness of the second positioning plate 322 is greater than the thickness of the connecting plate 400.

[0028] Combination Figure 1 As shown, the bottom surface of the corner piece 200 of the upper module and the top surface of the corner piece 200 of the lower module are both provided with a straight slot hole 201 for the locking piece 310 to pass through, the length of the straight slot hole 201 corresponds to the length of the longitudinal slot of the cross positioning hole 401, and the width is less than the length of the transverse slot of the cross positioning hole 401 and is greater than or equal to the width of the longitudinal slot of the cross positioning hole 401. The length of the longitudinal slot of the cross positioning hole 401 is greater than the length of the transverse slot.

[0029] The following example illustrates an assembly method of an embodiment of the present invention: The first step is to hoist the lower module in place and accurately level it, place the connecting plate 400 on its top surface, ensure that the longitudinal groove of the cross positioning hole 401 on the connecting plate 400 is aligned with the slotted hole 201 on the corner piece 200, then insert the locking piece 310 at the lower part of the assembled connecting piece 300 through the longitudinal groove of the cross positioning hole 401 and into the slotted hole 201 below, adjust the rotating positioning piece 320 to match the cross positioning hole 401, make the lower locking piece 310 completely enter the corner piece 200 of the lower module, and the positioning piece 320 is restricted by the top surface of the corner piece 200 and fixed in the cross positioning hole 401. At this time, the first positioning plate 321 is located in the transverse groove of the cross positioning hole 401, and the second positioning plate 322 passes through the longitudinal groove of the cross positioning hole 401, with the bottom located in the slotted hole 201 below and the top higher than the connecting plate 400.

[0030] The second step is to hoist the upper module to the corresponding position and slowly lower it, adjusting the angle so that the upper locking member 310 passes through the slotted hole 201 on the bottom of the upper module corner member 200 and enters the interior of the upper corner member 200. At this time, the top of the second positioning plate 322 is located in the slotted hole 201 on the upper side.

[0031] The third step, due to the limitation of the cross positioning hole 401, the positioning piece 320 is limited between the upper and lower corner pieces 200 and cannot rotate. Since the locking piece 310 is tightened with the connecting shaft 330, the locking piece 310 can rotate relative to the positioning piece 320. Rotating the locking piece 310 in any corner piece 200 by 90 degrees can simultaneously drive the locking piece 310 in the other corner piece 200 to rotate together. At this time, the two locking pieces 310 will clamp the two corner pieces 200 from the upper and lower sides to complete the locking of the corner pieces 200.

[0032] Furthermore, after locking, the upper and lower structural beams 102 and the middle connecting plate 400 are fixedly connected by bolts.

[0033] The above steps can complete the assembly of the detachable connection nodes of the steel structure modular assembly building. When disassembling, you only need to reverse the operation to unlock the lock for non-destructive disassembly, realizing the recycling of the module.

[0034] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A detachable connection node of a steel structure modular assembled building, comprising an upper module and a lower module, the two being connected via an intermediate connection component, the upper module and the lower module both comprising an angle piece (200) and a structural beam (102), the connection component comprising a connection plate (400), the structural beams (102) on corresponding sides of the upper module and the lower module being connected to each other via bolts passing through the connection plate (400), characterized in that: The connecting plate (400) is provided with a cross positioning hole (401); the connecting component further comprises a connecting piece (300) for locking and unlocking, the middle section of the connecting piece (300) is a positioning piece (320) cooperating with the cross positioning hole (401), and the two ends are locking pieces (310) cooperating with the corner piece (200) for realizing mechanical locking of the upper and lower corner pieces (200), and the two locking pieces (310) can rotate synchronously relative to the positioning piece (320); the bottom surface of the upper corner piece (200) and the top surface of the lower corner piece (200) are both provided with a straight slot hole (201) for the locking piece (310) to pass through, and the width of the straight slot hole (201) is smaller than the length of the transverse slot of the cross positioning hole (401).

2. A detachable connection node for modular steel structure assembled buildings as claimed in claim 1, characterized in that: The length of the longitudinal slot of the cross positioning hole (401) is greater than the length of the transverse slot thereof.

3. A detachable connection node for modular prefabricated steel structure buildings as claimed in claim 1, characterized in that: The connecting member (300) comprises a connecting shaft (330), the connecting shaft (330) passes through the positioning member (320) and is rotatably connected thereto, and a locking member (310) is respectively fixed at both ends.

4. A detachable connection node for modular steel structure assembled buildings as claimed in claim 3, characterized in that: The upper and lower parts of the connecting shaft (330) are respectively provided with threaded sections for threaded connection with the locking piece (310) on the corresponding side.

5. A detachable connection node for modular prefabricated steel structure buildings as claimed in claim 1, characterized in that: The positioning member (320) comprises a first positioning plate (321) and a second positioning plate (322); the first positioning plate (321) is adapted to the transverse groove of the cross positioning hole (401), and the second positioning plate (322) is adapted to the longitudinal groove of the cross positioning hole (401).

6. A detachable connection node for modular prefabricated steel structure buildings as claimed in claim 5, characterized in that: The thickness of the first positioning plate (321) is less than or equal to the thickness of the connecting plate (400), and the thickness of the second positioning plate (322) is greater than the thickness of the connecting plate (400).

7. A detachable connection node for modular prefabricated steel structure buildings as claimed in claim 5, characterized in that: A transverse through hole is provided in the middle of the second positioning plate (322) for the first positioning plate (321) to pass through, and a circular through hole is provided in the overlapping portion between the middle of the first positioning plate (321) and the middle of the second positioning plate (322) for the connecting shaft (330) to pass through.

8. A detachable connection node for modular prefabricated steel structure buildings as claimed in claim 1, characterized in that: The corner piece (200) is provided with a side hole (202) on the outside for observation and operation.

9. The method for assembling a detachable connection node of a modular prefabricated steel structure building according to any one of claims 1 to 8, characterized in that: The first step is to place the connecting plate (400) on the top surface of the lower module, ensure that the longitudinal groove of the cross positioning hole (401) on the connecting plate (400) is aligned with the slotted hole (201) on the corner piece (200), and then insert the locking piece (310) at the lower part of the assembled connecting piece (300) through the longitudinal groove of the cross positioning hole (401) and into the slotted hole (201) below, and adjust the rotating positioning piece (320) to match the cross positioning hole (401), so that the lower locking piece (310) completely enters the corner piece (200) of the lower module, and at this time, the positioning piece (320) is restricted by the top surface of the corner piece (200) and fixed in the cross positioning hole (401); The second step is to hoist the upper module to the top of the corresponding position and lower it so that the upper locking piece (310) passes through the slotted hole (201) on the bottom surface of the upper module corner piece (200) and enters the interior of the upper corner piece (200); The third step is to rotate the locking member (310) of the connecting member (300) so that the angle between the locking member (310) and the longitudinal groove of the cross positioning hole (401) is greater than 0, thereby completing the locking.

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