Modular stacked box building connection node

Abstract

The application discloses a connecting joint of a modular stacked box building, which comprises an upper corner piece box, a lower corner piece box, a main joint plate, a connecting end plate, an upper shear-resistant piece, a lower shear-resistant piece, an upper pin shaft and a lower pin shaft; the upper corner piece box is arranged above the main joint plate, the lower corner piece box is arranged below the main joint plate, an upper corbel is welded on the outer side surface of the upper corner piece box, a lower corbel is welded on the outer side surface of the lower corner piece box, and the connecting end plate is welded with the upper corbel and the lower corbel to connect the upper corner piece box and the lower corner piece box; the upper shear-resistant piece is fixedly arranged on the upper end surface of the main joint plate and located in the upper corner piece box, and the upper pin shaft connects the upper shear-resistant piece and the upper corner piece box; the lower shear-resistant piece is fixedly arranged on the lower end surface of the main joint plate and located in the lower corner piece box, and the lower pin shaft connects the lower shear-resistant piece and the lower corner piece box. The connecting joint can enhance the shear resistance, uplift resistance, bending capacity and seismic ductility of the joint area and is easy to disassemble.

Description

Technical Field

[0001] The invention relates to the field of steel structure buildings, in particular to a connection node of a modular stacked box building. Background Art

[0002] Research on modular stacked-box building systems is still under development, with stacked-box connection nodes being a primary focus. Existing modular stacked-box building connections primarily include bolted, tie-rod, and grouting connections. In actual engineering applications, certain adjustments are made to these three basic solutions:

[0003] Option 1: If Figure 1 As shown in the figure, multiple bolts are set at the top and bottom plates of the upper and lower modules to connect the upper and lower modules. The node connection is located outside the core area. The cost of the entire node is relatively low, but the overall strength of the node is poor. There is insufficient operating space at the local position of the node plate connection; the assembly rate is low.

[0004] Option 2: If Figure 2 As shown, the upper and lower modules are connected by a combination of bolts and grouting, resulting in high overall shear strength. The grouting process has good tolerance for node installation errors, and local deviations can be controlled by adjusting the flange length of the shear member on site. Single bolt nodes are convenient for construction, but bolt connection and grouting processes are used simultaneously. The connection strength between the upper and lower columns is insufficient, and there is a lack of effective pull-out resistance structural measures.

[0005] Option 3: If Figure 3 As shown, four bolts are installed in the corner box to connect the upper and lower modules. The node forms a certain resistance moment and can withstand a certain bending moment. The node size is relatively small, but the four bolts are difficult to install and require special installation tools. The opening on the side of the corner box is large, which has a certain impact on the strength of the column base.

[0006] Option 4: If Figure 4 As shown, it adds anti-pullout and anti-shear parts with limit plates on the basis of grouting method, and uses the shear strength of the triangular limit plates and the bonding strength provided by the high-strength grouting material to make the connection node have higher tensile and shear strength and certain bending strength. However, the processing of the self-positioning grouting node is complicated; the shear parts with limit plates occupy most of the volume in the corner box, the gripping force provided by the concrete grouting material is insufficient, and with the increase of service life and the long-term influence of horizontal wind loads, the overall bearing capacity of the node will continue to decrease; there is no connection between the upper and lower column wall panels, and they are only connected by the built-in anti-pullout and anti-shear parts, which greatly weakens the bending stiffness of the node; and the detachable process cannot be achieved. Summary of the Invention

[0007] In order to solve the problems in the prior art, the present invention provides a connection node for a modular stacked box building.

[0008] The application discloses a connecting joint of a modular stacked box building, which comprises an upper corner box and a lower corner box, the top of the upper corner box is fixedly connected with the bottom of an upper column, the bottom of the lower corner box is fixedly connected with the top of a lower column, the connecting joint further comprises a main joint plate, a connecting end plate, an upper shear-resistant piece, a lower shear-resistant piece, an upper pin shaft and a lower pin shaft; the upper corner box is arranged above the main joint plate, the lower corner box is arranged below the main joint plate, an upper bracket is welded on the outer side of the upper corner box, a lower bracket is welded on the outer side of the lower corner box, the connecting end plate is welded with the upper bracket and the lower bracket to connect the upper corner box and the lower corner box; the upper shear-resistant piece is fixedly arranged on the upper end surface of the main joint plate and located in the upper corner box, the upper pin shaft connects the upper shear-resistant piece and the upper corner box; the lower shear-resistant piece is fixedly arranged on the lower end surface of the main joint plate and located in the lower corner box, and the lower pin shaft connects the lower shear-resistant piece and the lower corner box.

[0009] In some embodiments, the upper bracket and the lower bracket are both hollow; one end of the upper pin shaft is located in the space inside the upper bracket, one end of the lower pin shaft is located in the space inside the lower bracket, and the connecting end plate not only connects the upper corner box and the lower corner box but also closes the space inside the upper bracket and the lower bracket.

[0010] In some embodiments, the upper bracket and the lower bracket both comprise two mutually parallel horizontal plates and two mutually parallel vertical plates, one end of the horizontal plate and the vertical plate of the upper bracket is welded with the outer side of the upper corner box, and one end of the horizontal plate and the vertical plate of the lower bracket is welded with the outer side of the lower corner box; the two horizontal plates and the two vertical plates of the upper bracket are connected in a head-to-tail mode to form the hollow upper bracket, and the two horizontal plates and the two vertical plates of the lower bracket are connected in a head-to-tail mode to form the hollow lower bracket.

[0011] In some embodiments, the connecting end plate is a U-shaped end plate, which comprises a vertical side plate and a top plate and a bottom plate connected with the top end and the low end of the side plate respectively, before the U-shaped end plate is welded with the upper bracket and the lower bracket, the top plate of the U-shaped end plate is matched with the horizontal plate of the upper bracket away from the lower bracket, and the bottom plate of the U-shaped end plate is matched with the horizontal plate of the lower bracket away from the upper bracket, so that the U-shaped end plate is clamped on the upper bracket and the lower bracket.

[0012] In some embodiments, the upper corner piece box comprises an upper X-direction inner protrusion and an upper Y-direction inner protrusion; the upper X-direction inner protrusion is formed by extending from the bottom end of the first side wall of the upper corner piece box to the second side wall, the first side wall and the second side wall of the upper corner piece box are oppositely arranged, and the distance between the end of the upper X-direction inner protrusion and the second side wall of the upper corner piece box is matched with the width of the upper shear-resistant piece; the upper Y-direction inner protrusion is formed by extending from the bottom end of the third side wall of the upper corner piece box to the bottom end of the fourth side wall, the third side wall and the fourth side wall of the upper corner piece box are oppositely arranged, and the distance between the two ends of the upper Y-direction inner protrusion is matched with the length of the upper shear-resistant piece.

[0013] In some embodiments, the lower corner piece box comprises a lower X-direction inner protrusion and a lower Y-direction inner protrusion; the lower X-direction inner protrusion is formed by extending from the top end of the first side wall of the lower corner piece box to the second side wall, the first side wall and the second side wall of the lower corner piece box are oppositely arranged, and the distance between the end of the lower X-direction inner protrusion and the second side wall of the lower corner piece box is matched with the width of the lower shear-resistant piece; the lower Y-direction inner protrusion is formed by extending from the top end of the third side wall of the lower corner piece box to the top end of the fourth side wall, the third side wall and the fourth side wall of the lower corner piece box are oppositely arranged, and the distance between the two ends of the lower Y-direction inner protrusion is matched with the length of the lower shear-resistant piece.

[0014] In some embodiments, the side wall of the upper corner piece box is provided with an upper mounting insertion hole matched with the upper pin shaft, and the side wall of the upper corner piece box is further welded with an upper hole opening reinforcing ring plate coaxially arranged with the upper mounting insertion hole; the side wall of the lower corner piece box is provided with a lower mounting insertion hole matched with the lower pin shaft, and the side wall of the lower corner piece box is further welded with a lower hole opening reinforcing ring plate coaxially arranged with the lower mounting insertion hole.

[0015] In some embodiments, the axis of the upper pin shaft is parallel to the long side of the upper corner piece box; the axis of the lower pin shaft is parallel to the long side of the lower corner piece box.

[0016] In some embodiments, the outer side of the upper corner piece box is fixedly connected with the main beam of the upper box-type module, the outer side of the upper bracket of the upper corner piece box is oppositely arranged with the outer side of the main beam of the upper box-type module, and the upper pin shaft is staggered with the main beam of the upper box-type module;

[0017] In some embodiments, the outer side of the lower corner piece box is oppositely arranged with the outer side of the main beam of the lower box-type module, and the lower pin shaft is staggered with the main beam of the lower box-type module.

[0018] In some embodiments, the connecting node of the modular stacked box building further comprises a connecting plate, the upper corner piece box, the lower corner piece box and the connecting end plate are provided in two and symmetrically, the connecting plate is arranged between the two connecting end plates, one end of the connecting plate is fixedly connected with one connecting end plate, and the other end of the connecting plate is fixedly connected with the other connecting end plate.

[0019] The application discloses a connecting node of a modular stacked box building.

[0020] The upper and lower corbel-shaped pieces are provided with the upper and lower corbel-shaped pieces, the upper and lower corbel-shaped pieces are welded with the connecting end plate to form the first seismic fortification, the upper and lower shear pieces are provided, and the upper and lower pin shafts are arranged to connect the upper and lower shear pieces and the upper and lower corner piece boxes to form the second seismic fortification.

[0021] Compared with the semi-rigid connection scheme using bolts shown in the prior art, Figure 1 The two seismic fortifications of the connecting node of the modular stacked box building provided by the application have higher overall performance strength and smaller interlayer displacement.

[0022] Compared with the semi-rigid connection scheme using bolts shown in the prior art, Figure 2 Compared with the semi-rigid connection scheme using bolts shown in the prior art,

[0023] Compared with the semi-rigid connection scheme using bolts shown in the prior art, Figure 3 Compared with the semi-rigid connection scheme using bolts shown in the prior art, Compared with the semi-rigid connection scheme using bolts shown in the prior art,

[0024] Relative to Figure 4 The modular stacked box building shown in this embodiment utilizes a connection scheme combining grouting and shear members. Both layers of seismic protection at the connection points of the modular stacked box building utilize a dry process, effectively improving the durability of the steel structure in the joint area. Furthermore, the first layer of seismic protection directly connects the upper and lower corner boxes, effectively enhancing the structural integrity. Simply mechanically dismantling the connecting end plates on the corbels and removing the pins allows for complete, non-destructive separation of the modular boxes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the connection node of Solution 1 in the background technology, where a is an elevation view and b is a top view;

[0027] Figure 2 A schematic diagram of the structure of the connection nodes of Solution 2 in the background technology;

[0028] Figure 3 Schematic diagram of the structure of the connection node of solution 3 in the background art, where c is the elevation view and d is the top view;

[0029] Figure 4 Schematic diagram of the structure of the connection node of solution 3 in the background art, where e is a cross-sectional view of the entire node, and f is a cross-sectional view of the connection plate and the shear member in another direction;

[0030] Figure 5 A top view of an application scenario of a connection node of a modular stacked container building provided by an embodiment of the present invention;

[0031] Figure 6 for Figure 5 A 3-3 sectional view of a connection node of the modular stacked box building shown;

[0032] Figure 7 for Figure 5 A 1-1 cross-sectional view of a connection node of the modular stacked box building shown;

[0033] Figure 8 for Figure 5 A 2-2 cross-sectional view of a connection node of the modular stacked box building shown;

[0034] Figure 9A vertical sectional view of a main node plate and a shear member in a modular stacked box building according to an embodiment of the present application;

[0035] Figure 10 An axial view of a connection node of a modular stacked box building according to another embodiment of the present application;

[0036] FIG. 10 is a main node plate; 101 is an auxiliary mounting hole; 20 is a connection end plate; 201 is a side plate; 202 is a top plate; 203 is a bottom plate; 30 is an upper corner member box; 301 is an upper X-direction inner protrusion; 302 is an upper Y-direction inner protrusion; 40 is a lower corner member box; 401 is a lower X-direction inner protrusion; 402 is a lower Y-direction inner protrusion; 50 is an upper bracket; 501 is a horizontal plate; 502 is a vertical plate; 60 is a lower bracket; 70 is an upper shear member; 701 is a through hole; 80 is a lower shear member; 90 is an upper pin shaft; 901 is an anchor head; 100 is a lower pin shaft; 110 is an upper hole opening reinforcing ring plate; 120 is a lower hole opening reinforcing ring plate; 130 is a connection plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0038] It should be understood that, when used in the present specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0039] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0040] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0041] It should be further understood that the terms "and, or" used in the present description and the appended claims refer to and include any and all possible combinations of one or more of the associated listed items.

[0042] See also Figures 5 to 9 , Figure 5 A top view of an application scenario of a connection node of a modular stacked container building provided by an embodiment of the present invention; Figure 6 for Figure 5 A 3-3 sectional view of a connection node of the modular stacked box building shown; Figure 7 for Figure 5 A 1-1 cross-sectional view of a connection node of the modular stacked box building shown; Figure 8 for Figure 5 A 2-2 cross-sectional view of a connection node of the modular stacked box building shown; Figure 9 A vertical cross-sectional view of a main gusset plate and shear members in a modular stacked box building provided in one embodiment of the present invention; Figure 10 An axonometric view of connection nodes of a modular stacked container building provided in accordance with another embodiment of the present invention.

[0043] like Figures 5 to 9As shown, the embodiment of the present application discloses a connecting node of a modular stacked box building, which is applied to the scene of stacking and splicing of steel structure box modules, and can set two anti-seismic structures for the modular stacked box building to ensure the overall anti-seismic performance of the modular stacked box building.

[0044] In an embodiment, the connecting node comprises an upper corner box 30 and a lower corner box 40, the top of the upper corner box 30 is fixedly connected with the bottom of the upper column, the bottom of the lower corner box 40 is fixedly connected with the top of the lower column, the connecting node further comprises a main node plate 10, a connecting end plate 20, an upper shear member 70, a lower shear member 80, an upper pin shaft 90 and a lower pin shaft 100; the upper corner box 30 is arranged above the main node plate 10, the lower corner box 40 is arranged below the main node plate 10, an upper corbel 50 is welded on the outer side of the upper corner box 30, a lower corbel 60 is welded on the outer side of the lower corner box 40, the connecting end plate 20 is welded with the upper corbel 50 and the lower corbel 60 to connect the upper corner box 30 and the lower corner box 40; the upper shear member 70 is fixedly arranged on the upper end surface of the main node plate 10 and located in the upper corner box 30, the upper pin shaft 90 connects the upper shear member 70 and the upper corner box 30; the lower shear member 80 is fixedly arranged on the lower end surface of the main node plate 10 and located in the lower corner box 40, the lower pin shaft 100 connects the lower shear member 80 and the lower corner box 40.

[0045] In this embodiment, the upper corner box 30 is the corner box at the bottom of the upper box-shaped module. It is square in shape, with the upper column, the column of the upper box-shaped module, connected to its top. Its two perpendicular outer surfaces are connected to the main beam and side beams of the upper box-shaped module. The lower corner box 40 is the corner box at the top of the lower box-shaped module. It is square in shape, with the lower column, the column of the lower box-shaped module, connected to its bottom. Its two perpendicular outer surfaces are connected to the main beam and side beams of the lower box-shaped module. By connecting the upper corner box 30 and the lower corner box 40 to connect the upper and lower box-shaped modules, the design concept of module-first, then whole is adopted, fully utilizing the lateral stiffness of the individual module boxes. The main gusset plate 10 is used to receive the upper corner box 30 and the lower corner box 40, and provides horizontal X and Y constraints on the upper and lower corner boxes 30, 40, thereby limiting horizontal movement of the upper and lower box-type modules relative to the main gusset plate 10. The outer side of the upper corner box 30, to which the upper corbel 50 is welded, is not connected to the main beam or side beam. Similarly, the outer side of the lower corner box 40, to which the lower corbel 60 is welded, is also not connected to the main beam or side beam. That is, the upper corbel 50 and the lower corbel 60 are located on the outer side of the entire module box, making it convenient to connect the upper and lower corbels 50 and 60 via the connecting end plates 20 during on-site assembly. The welding of the upper corbel 50 to the upper corner box 30 and the welding of the lower corbel 60 to the upper corner box 30 are both completed during factory prefabrication of the module box. The outer side of the upper corner box 30 to which the upper corbel 50 is welded is flush with the outer side of the lower corner box 40 to which the lower corbel 60 is welded, and the upper and lower corbels 50 and 60 have the same size, thereby facilitating the use of the regularly shaped connecting end plate 20 for welding to the upper and lower corbels 50 and 60. By welding the connecting end plate 20 to the upper and lower corbels 50 and 60, the upper and lower corner box 30 and 40 are securely connected, thereby securely connecting the upper and lower box-type modules in the vertical direction, thereby preventing relative displacement between the upper and lower box-type modules in the vertical plane. Together with the X- and Y-direction constraints in the horizontal plane provided by the main node plate 10, these form a rigid constraint on the upper and lower box-type modules, thus forming the first line of seismic fortification.

[0046] In the embodiment, the upper pin shaft 90 and the lower pin shaft 100 are both high-strength steel and have strong deformation resistance. The upper shear member 70 is welded on the upper end face of the main node plate 10 and located in the upper corner piece box 30, and the upper shear member 70 and the upper corner piece box 30 are reliably connected through the upper pin shaft 90, effectively improving the shear performance of the upper box module. The lower shear member 80 is welded on the lower end face of the main node plate 10 and located in the lower corner piece box 40, and the lower shear member 80 and the lower corner piece box 40 are reliably connected through the lower pin shaft 100, effectively improving the shear performance of the lower box module, so that the trend of the connection end plate 20 arranged vertically can be inhibited from continuing to deform due to the action of a large horizontal force, and the overall shear and bending performance of the connection node is improved. Moreover, since the upper shear member 70 and the lower shear member 80 are welded on the main node plate 10 (completed when the factory is prefabricated), the upper shear member 70 and the upper corner piece box 30 are connected through the upper pin shaft 90, and the lower shear member 80 and the lower corner piece box 40 are connected through the lower pin shaft 100, so that the anti-pulling performance of the connection node can be improved. In this way, a second seismic prevention is formed.

[0047] In summary, the embodiment of the application can greatly enhance the shear, anti-pulling, bending bearing capacity and seismic ductility of the node area by setting the combination type node of the outer bracket welded combined with the pin shaft connected shear member, and can effectively play the seismic energy dissipation effect of the node area. When multiple modules are spliced, multiple connection nodes are provided, and the seismic performance of the overall modularized stacked box building is improved.

[0048] In a further embodiment, the side wall of the upper corner piece box 30 is provided with an upper mounting insertion hole matched with the upper pin shaft 90, and the side wall of the upper corner piece box 30 is further welded with an upper hole opening reinforcing ring plate 110 coaxially arranged with the upper mounting insertion hole; the side wall of the lower corner piece box 40 is provided with a lower mounting insertion hole matched with the lower pin shaft 100, and the side wall of the lower corner piece box 40 is further welded with a lower hole opening reinforcing ring plate 120 coaxially arranged with the lower mounting insertion hole.

[0049] In the embodiment, the upper hole reinforcing ring plate 110 is taken as an example to describe that the two opposite side walls of the upper corner piece box 30 are provided with opposite upper mounting sockets, the upper hole reinforcing ring plate 110 is welded outside the two opposite side walls of the upper corner piece box 30 and coaxially arranged with the upper mounting sockets, which is used to reinforce the strength of the corner piece box to compensate the influence of the upper mounting socket on the strength of the upper corner piece box 30, and the upper hole reinforcing ring plate 110 also plays a role in increasing the length of the contact surface between the upper pin shaft 90 and the upper corner piece box 30 to make the connection more reliable. The upper shear member 70 also has a through hole 701 opposite to the upper mounting socket. When assembling the upper corner piece box 30 and the upper shear member 70, the upper corner piece box 30 is placed on the main node plate 10, the position is adjusted to align the upper mounting socket and the through hole 701, then the upper pin shaft 90 is sequentially inserted through the upper hole reinforcing ring plate 110 of one side wall, the upper mounting socket, the through hole 701 of the upper shear member 70, the upper hole reinforcing ring plate 110 and the upper mounting socket of the other side wall, and one end of the upper pin shaft 90 is provided with an anchor head 901, which is larger than the diameter of the upper mounting socket and the inner diameter of the upper hole reinforcing ring plate 110 to prevent the upper pin shaft 90 from being pulled out from the end away from the anchor head 901.

[0050] The functions and positional relationships of the lower hole reinforcing ring plate 120, the specific structure of the lower shear member 80, the specific structure and installation sequence of the lower pin shaft 100 can be referred to the upper hole reinforcing ring plate 110, the upper shear member 70 and the upper pin shaft 90, which will not be described here. The installation of the socket, the through hole 701 and the welding of the hole reinforcing ring plate are all completed in the factory.

[0051] In a further embodiment, the upper corner piece box 30 comprises an upper X-direction inner protrusion 301 and an upper Y-direction inner protrusion 302; the upper X-direction inner protrusion 301 is formed by extending from the first side wall bottom end to the second side wall of the upper corner piece box 30, the first side wall and the second side wall of the upper corner piece box 30 are oppositely arranged, and the distance between the end of the upper X-direction inner protrusion 301 and the second side wall of the upper corner piece box 30 is matched with the width of the upper shear member 70; the upper Y-direction inner protrusion 302 is formed by extending from the third side wall bottom end to the bottom end of the fourth side wall of the upper corner piece box 30, the third side wall bottom end and the fourth side wall of the upper corner piece box 30 are oppositely arranged, and the distance between the two ends of the upper Y-direction inner protrusion 302 is matched with the length of the upper shear member 70.

[0052] In the embodiment, when the upper box module is assembled to the main node plate 10 at the construction site, the upper shear member 70 pre-welded on the main node plate 10 can cooperate with the upper X inward protrusion 301 and the upper Y inward protrusion 302 to play a positioning role on the upper box module, that is, only when the upper shear member 70 is aligned with the middle region of the upper X inward protrusion 301 and the upper Y inward protrusion 302, the upper box module can be placed on the main node plate 10, and after the placement is completed, since the distance between the end of the upper X inward protrusion 301 and the second side wall is adapted to the width of the upper shear member 70, and the distance between the two ends of the upper Y inward protrusion 302 is adapted to the length of the upper shear member 70, the upper shear member 70 can limit the displacement of the upper box module in the horizontal direction, thereby providing X and Y direction constraints in the horizontal plane together with the main node plate 10.

[0053] In a further embodiment, the lower corner box 40 comprises a lower X inward protrusion 401 and a lower Y inward protrusion 402; the lower X inward protrusion 401 is formed by extending from the top end of the first side wall of the lower corner box 40 to the second side wall, the first side wall and the second side wall of the lower corner box 40 are oppositely arranged, and the distance between the end of the lower X inward protrusion 401 and the second side wall of the lower corner box 40 is adapted to the width of the lower shear member 80; the lower Y inward protrusion 402 is formed by extending from the top end of the third side wall of the lower corner box 40 to the top end of the fourth side wall, the bottom end of the third side wall and the fourth side wall of the lower corner box 40 are oppositely arranged, and the distance between the two ends of the lower Y inward protrusion 402 is adapted to the length of the lower shear member 80.

[0054] In the embodiment, when the main node plate 10 is assembled to the lower box module at the construction site, the lower shear member 80 pre-welded on the main node plate 10 can cooperate with the lower X inward protrusion 401 and the lower Y inward protrusion 402 to play a positioning role on the main node plate 10, that is, only when the lower shear member 80 is aligned with the middle region of the lower X inward protrusion 401 and the lower Y inward protrusion 402, the main node plate 10 can be placed on the lower box module, and after the placement is completed, since the distance between the end of the lower X inward protrusion 401 and the second side wall is adapted to the width of the lower shear member 80, and the distance between the two ends of the lower Y inward protrusion 402 is adapted to the length of the lower shear member 80, the lower shear member 80 can limit the displacement of the lower box module in the horizontal direction, thereby providing X and Y direction constraints in the horizontal plane together with the main node plate 10.

[0055] In further embodiments, the axis of the upper pin 90 is parallel to the long side of the upper corner box 30; the axis of the lower pin 100 is parallel to the long side of the lower corner box 40.

[0056] In the present embodiment, the upper pin 90 and the upper corner box 30 are taken as an example for description, the first side wall (the second side wall) of the upper corner box 30 corresponds to the long side, and the third side wall (the fourth side wall) of the upper corner box 30 corresponds to the short side. The upper mounting socket is opened on the third side wall and the fourth side wall of the upper corner box 30, and the upper bracket 50 is welded on the outer side of the third side wall of the upper corner box 30. Since the bending resistance of the upper corner box 30 in the X direction is less than that in the Y direction in the cross section, the high-strength upper pin 90 is arranged parallel to the long side of the upper corner box 30, which can improve the bending resistance of the upper corner box 30. The specific mounting relationship and function of the lower pin 100 and the lower corner box 40 can be referred to the upper pin 90 and the upper corner box 30, which will not be described here.

[0057] In further embodiments, the outer side of the upper corner box 30 is fixedly connected with the main beam of the upper box module, the outer side of the upper corner box 30 to which the upper bracket 50 is welded is arranged opposite to the outer side of the main beam of the upper box module, and the upper pin 90 is arranged staggered with the main beam of the upper box module; the outer side of the lower corner box 40 is fixedly connected with the main beam of the lower box module, the outer side of the lower corner box 40 to which the lower bracket 60 is welded is arranged opposite to the outer side of the main beam of the lower box module, and the lower pin 100 is arranged staggered with the main beam of the lower box module.

[0058] In the present embodiment, the upper corner box 30 is taken as an example for description, the main beam of the upper box module is fixedly connected on the outer side of the fourth side wall of the upper corner box 30, the edge beam is fixedly connected on the outer side of the second side wall of the upper corner box 30, and the upper bracket 50 is welded on the outer side of the third side wall of the upper corner box 30, so that the upper pin 90 is arranged staggered with the main beam, i.e. the upper pin 90 is closer to the second side wall of the upper corner box 30, and the main beam is closer to the first side wall of the upper corner box 30, thereby avoiding the end of the upper pin 90 without the anchor head 901 from the fourth side wall. The specific positional relationship and function of the lower pin 100 and the main beam of the lower box module can be referred to the description of the upper pin 90, which will not be described here.

[0059] In further embodiments, the upper bracket 50 and the lower bracket 60 are hollow; one end of the upper pin 90 is located in the space inside the upper bracket 50, one end of the lower pin 100 is located in the space inside the lower bracket 60, and the connecting end plate 20 not only connects the upper corner piece box 30 and the lower corner piece box 40, but also seals the space inside the upper bracket 50 and the lower bracket 60.

[0060] In the present embodiment, one end of the upper pin 90 located in the space inside the upper bracket 50 is the end provided with the anchor head 901, and one end of the lower pin 100 located in the space inside the lower bracket 60 is the end provided with the anchor head 901. The connecting end plate 20 seals the space inside the upper bracket 50 and the lower bracket 60, so that the connecting end plate 20 not only reliably connects the upper corner piece box 30 and the lower corner piece box 40 as in the above embodiments, but also limits the upper pin 90 and the lower pin 100, which can prevent the upper pin 90 and the lower pin 100 from being pulled out of the upper corner piece box 30 or the lower corner piece box 40 from the end provided with the anchor head 901.

[0061] In further embodiments, the upper bracket 50 and the lower bracket 60 each include two horizontal plates 501 and two vertical plates 502, one end of the horizontal plates 501 and the vertical plates 502 of the upper bracket 50 is welded to the outer side of the upper corner piece box 30, and one end of the horizontal plates 501 and the vertical plates 502 of the lower bracket 60 is welded to the outer side of the lower corner piece box 40; the two horizontal plates 501 and the two vertical plates 502 of the upper bracket 50 are connected end to end to form a hollow structure, and the two horizontal plates 501 and the two vertical plates 502 of the lower bracket 60 are connected end to end to form a hollow structure.

[0062] In the embodiment, the upper bracket 50 is taken as an example for description, two lateral plates 501 of the upper bracket 50 are of the same size, and are vertically welded on the third side wall of the upper corner box 30. One of the two lateral plates 501 is located at the top end of the upper corner box 30, and the other is located at the bottom end of the upper corner box 30. Two vertical plates 502 are vertically welded on the third side wall of the upper corner box 30, and are connected end to end. The third length of the lateral plate 501 protruding from the third side wall of the upper corner box 30 is the same as the length of the vertical plate 502 protruding from the third side wall of the upper corner box 30. One end of the lateral plate 501 and the vertical plate 502 of the upper bracket 50 is welded to the outer side of the third side wall of the upper corner box 30, so that the other end forms an opening. The space surrounded by the lateral plate 501 and the vertical plate 502 is the space inside the upper bracket 50 in the above embodiment. When the upper pin shaft 90 is installed, the end without the anchor head 901 is inserted into the upper installation hole of the third side wall of the upper corner box 30 from the opening of the upper bracket 50. After the upper pin shaft 90 is installed, the end with the anchor head 901 is located in the space of the upper bracket 50. After the welding of the connecting end plate 20 and the upper bracket 50 is completed, the connecting end plate 20 closes the opening, thereby closing the space inside the upper bracket 50. The upper bracket 50 can be integrally formed or separately welded. The specific structure of the lower bracket 60 and the position and connection relationship between the lower bracket 60 and the lower corner box 40 can be referred to the part of the upper bracket 50, and will not be described here.

[0063] In a further embodiment, the connecting end plate 20 is a U-shaped end plate, which includes a vertical side plate 201, a top plate 202 and a bottom plate 203 connected to the top end and the bottom end of the side plate 201 respectively. Before the U-shaped end plate is welded with the upper bracket 50 and the lower bracket 60, the top plate 202 of the U-shaped end plate is matched with the lateral plate 501 of the upper bracket 50 away from the lower bracket 60, and the bottom plate 203 of the U-shaped end plate is matched with the lateral plate 501 of the lower bracket 60 away from the upper bracket 50, so that the U-shaped end plate is clamped on the upper bracket 50 and the lower bracket 60.

[0064] In the embodiment, the connecting end plate 20 is from Figure 6The view angle shown is similar to a vertical U-shaped type, thus named U-shaped end plate, the width of the U-shaped end plate is the same as the width of the upper bracket 50 and the lower bracket 60, the distance between the lower end surface of the top plate 202 and the upper end surface of the bottom plate 203 is equal to the distance between the upper end surface of the transverse plate 501 of the upper bracket 50 away from the lower bracket 60 and the lower end surface of the transverse plate 501 of the lower bracket 60 away from the upper bracket 50, so as to facilitate the clamping of the U-shaped end plate on the upper bracket 50 and the lower bracket 60, and provide a welding operation surface to facilitate welding, and the inner end surface of the side plate 201 of the U-shaped end plate is in contact with the side end surface of the upper bracket 50 and the lower bracket 60, so as to ensure that the distance between the side plate 201 and the upper bracket 50 and the lower bracket 60 is minimized, so that the side plate 201 can effectively limit the axial displacement of the upper pin shaft 90 and the lower pin shaft 100.

[0065] In an embodiment, the connecting node of the modular stacked box building further comprises a connecting plate 130, the upper corner piece box 30, the lower corner piece box 40 and the connecting end plate 20 are provided in two and symmetrically arranged, the connecting plate 130 is arranged between the two connecting end plates 20, and one end of the connecting plate 130 is fixedly connected with one connecting end plate 20, and the other end of the connecting plate 130 is fixedly connected with the other connecting end plate 20.

[0066] In this embodiment, since a plurality of box-type modules need to be spliced when splicing the modules, when the connecting node involves the splicing of four box-type modules, such as the node located in the middle of the modular stacked box building, two upper corner piece boxes 30 are symmetrically arranged above the main node plate 10, and the symmetry axis is the vertical center line of the main node plate 10, and correspondingly, the upper shear member 70 is also provided in two and symmetrically arranged, and is connected with the two upper corner piece boxes 30 one by one through cooperation with the corresponding upper pin shaft 90 and upper hole opening reinforcing ring plate 110. Two lower corner piece boxes 40 are symmetrically arranged below the main node plate 10, and the symmetry axis is the vertical center line of the main node plate 10, and correspondingly, the lower shear member 80 is also provided in two and symmetrically arranged, and is connected with the two lower corner piece boxes 40 one by one through cooperation with the corresponding lower pin shaft 100 and lower hole opening reinforcing ring plate 120.

[0067] One of the connecting end plates 20 connects one upper corner piece box 30 and one lower corner piece box 40, the other connecting end plate 20 connects the other upper corner piece box 30 and the other lower corner piece box 40, and the two connecting end plates 20 are arranged in parallel and symmetrically, with the symmetry axis being the vertical center line of the main node plate 10. The connecting plate 130 is arranged perpendicularly to the two connecting end plates 20, with the outer side end face flush with the outer side end face of the two connecting end plates 20, and the two ends of the connecting plate 130 are welded to the two connecting end plates 20 respectively, so as to connect the four box type modules on the left and right sides together, further constrain the two box type modules on the left side and the two box type modules on the right side (the left side and the right side can be understood as the left side and the right side of the vertical center line of the main node plate 10) to avoid relative displacement, and improve the stability of the connecting node. In this embodiment, the connecting plate 130 also belongs to the structure of the first seismic fortification. When multiple modules are spliced, there are multiple connecting nodes as described, so as to further improve the integrity of the entire modular stacked box building.

[0068] As can be understood, Figure 10 as shown in another embodiment, when the modules are spliced, the connecting node also has a splicing situation involving one box type module above and one box type module below, for example, the node located at the edge of the modular stacked box building. The connecting node of such an embodiment does not include the connecting plate 130. In the entire modular stacked box building, both connecting nodes connecting four box type modules and connecting nodes connecting two box type modules can be included.

[0069] In further embodiments, the main node plate 10 can be provided with auxiliary mounting holes 101, and the box type module can further include a concrete floor, the bottom concrete floor of the upper box type module is provided with an auxiliary mounting hole 101 reserved opening, and the auxiliary mounting hole 101 and the auxiliary mounting hole 101 reserved opening are arranged opposite to each other. When the box type module is assembled with the main node plate 10, the bottom concrete floor of the upper box type module is located above the main node plate 10, and a corresponding auxiliary connecting member can be arranged in the auxiliary mounting hole 101 to further improve the integrity of the node area.

[0070] The defects in the prior art are:

[0071] Figure 1 The scheme shown in the figure connects the upper and lower modules by arranging multiple bolts at the positions of the top plate and the bottom plate of the upper and lower modules, and the overall strength of the node is poor; the operation space at the local position of the node plate connection is not enough; the assembly rate is relatively low;

[0072] Figure 2 The scheme shown in the figure connects the upper and lower modules by the combination of bolts and grouting, and the bolt connection and the grouting process are adopted at the same time, and the node cost is relatively high; the connection strength between the upper and lower columns is insufficient, and effective anti-pulling structure measures are lacking;

[0073] Figure 3 The shown scheme is connected by setting four bolts in the corner box to connect the upper and lower modules, the installation of four bolts is more difficult, special installation tools are needed, the side hole of the corner box is large, and the strength of the column foot is affected to a certain extent;

[0074] Figure 4 The shown scheme is connected by setting four bolts in the corner box to connect the upper and lower modules, the installation of four bolts is more difficult, special installation tools are needed, the side hole of the corner box is large, and the strength of the column foot is affected to a certain extent;

[0075] The connection node of the modular stacked box building provided by the embodiment of the application has the following advantages over the prior art:

[0076] Compared with Figure 1 The two seismic fortifications in the connection node of the modular stacked box building provided by the embodiment of the application make the overall performance strength of the node higher and the interlayer displacement smaller;

[0077] Compared with Figure 2 The connection node of the modular stacked box building provided by the embodiment of the application adopts a dry process, which can effectively improve the durability of the steel structure in the node area, and through the setting of two seismic fortifications, the connection strength between the upper and lower columns and the anti-pulling performance are improved;

[0078] Compared with Figure 3 The installation hole for cooperating with the pin shaft is only set on the corner box of the connection node of the modular stacked box building provided by the embodiment of the application, the hole is smaller, the strength of the column foot is less affected, and the building comfort performance under the action of horizontal force is higher;

[0079] Compared with Figure 4The connection scheme shown uses grouting and shear connectors in combination, which only relies on a small amount of concrete in the node area to resist the grip of the shear connector, the shear connector with a limiting plate occupies most of the volume in the corner box, the grip force provided by the concrete grouting material is insufficient, and with the increase of service life and the long-term effect of horizontal wind load, the overall carrying capacity of the node will decrease continuously. The two seismic fortifications of the connection node of the modular stacked box building provided by the embodiment of the application are all dry process, which can effectively improve the durability of the steel structure in the node area;

[0080] And, Figure 4 The scheme shown has no reliable ductility connection between the upper and lower corner boxes, and once the concrete strength degrades, the overall node constraint capacity will degrade sharply, thereby causing the overall structural stress performance to decrease significantly. The connection node of the modular stacked box building provided by the embodiment of the application directly connects the upper and lower corner boxes through the first seismic fortification, effectively improving the integrity of the structure.

[0081] Further, Figure 4 The scheme shown only relies on horizontal steel plate connection between the left and right side boxes, and has poor out-of-plane bending stiffness; and cannot realize the detachable process. The connection node of the modular stacked box building provided by the embodiment of the application can further increase the connection between the left and right side boxes out of the plane through the first seismic fortification;

[0082] And only the U-shaped end plate on the corbel and the pin shaft need to be mechanically removed, which can completely realize the non-destructive separation of the module box, is beneficial to the upgrading and reconstruction of the modular building and the recycling after the demolition, and has strong popularization value.

[0083] In summary, the connection node of the modular stacked box building provided by the embodiment of the application greatly enhances the shear, uplift, bending carrying capacity and seismic ductility of the node area through the unique structure of the two seismic fortifications, can effectively play the role of seismic energy dissipation in the node area, improve the seismic design performance of the overall structure, and is easy to disassemble, beneficial to the upgrading and reconstruction of the modular building and the recycling after the demolition, has strong popularization value, and is suitable for high-rise reinforced stacked box steel frame system, high-rise reinforced stacked box shear wall system, multi-story stacked box system, etc., and can be widely used in buildings such as residences, apartments, offices, schools and hospitals.

[0084] The above is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A connection node for a modular stacked box building, comprising an upper corner box and a lower corner box, wherein the top of the upper corner box is fixedly connected to the bottom of an upper column, and the bottom of the lower corner box is fixedly connected to the top of a lower column, characterized in that: The connection node further comprises a main node plate, a connection end plate, an upper shear member, a lower shear member, an upper pin shaft and a lower pin shaft; The upper corner fitting box is arranged above the main gusset plate, and the lower corner fitting box is arranged below the main gusset plate. An upper corbel is welded to the outer side of the upper corner fitting box, and a lower corbel is welded to the outer side of the lower corner fitting box. The connecting end plate is welded to the upper corbel and the lower corbel to connect the upper corner fitting box and the lower corner fitting box. The upper shear member is fixed on the upper end surface of the main gusset plate and is located in the upper corner piece box, and the upper pin connects the upper shear member and the upper corner piece box; the lower shear member is fixed on the lower end surface of the main gusset plate and is located in the lower corner piece box, and the lower pin connects the lower shear member and the lower corner piece box; The upper corbel and the lower corbel are both hollow; one end of the upper pin is located in the space inside the upper corbel, and one end of the lower pin is located in the space inside the lower corbel; the connecting end plate connects the upper corner box and the lower corner box while also closing the space inside the upper corbel and the lower corbel; The upper corbel and the lower corbel each include two mutually parallel transverse plates and two mutually parallel vertical plates, one end of the transverse plate and the vertical plate of the upper corbel is welded to the outer side surface of the upper corner fitting box, and one end of the transverse plate and the vertical plate of the lower corbel is welded to the outer side surface of the lower corner fitting box; the two transverse plates and the two vertical plates of the upper corbel are connected end to end to form a hollow arrangement of the upper corbel, and the two transverse plates and the two vertical plates of the lower corbel are connected end to end to form a hollow arrangement of the lower corbel; The connecting end plate is a U-shaped end plate, which includes vertical side plates and a top plate and a bottom plate respectively connected to the top and bottom ends of the side plates. Before the U-shaped end plate is welded to the upper corbel and the lower corbel, the top plate of the U-shaped end plate cooperates with the transverse plate of the upper corbel away from the lower corbel, and the bottom plate of the U-shaped end plate cooperates with the transverse plate of the lower corbel away from the upper corbel, so that the U-shaped end plate is clamped on the upper corbel and the lower corbel.

2. The connection node of the modular stacked container building according to claim 1, characterized in that: The upper corner piece box includes an upper X-direction inward protrusion and an upper Y-direction inward protrusion; the upper X-direction inward protrusion is formed by extending from the bottom end of the first side wall of the upper corner piece box to the second side wall, the first side wall and the second side wall of the upper corner piece box are arranged opposite to each other, and the distance between the end of the upper X-direction inward protrusion and the second side wall of the upper corner piece box is adapted to the width of the upper shear member; the upper Y-direction inward protrusion is formed by extending from the bottom end of the third side wall and the bottom end of the fourth side wall of the upper corner piece box toward each other, the third side wall and the fourth side wall of the upper corner piece box are arranged opposite to each other, and the distance between the two ends of the upper Y-direction inward protrusion is adapted to the length of the upper shear member.

3. The connection node of the modular stacked container building according to claim 2, characterized in that: The lower corner piece box includes a lower X-direction inward protrusion and a lower Y-direction inward protrusion; the lower X-direction inward protrusion is formed by extending from the top end of the first side wall of the lower corner piece box to the second side wall, the first side wall and the second side wall of the lower corner piece box are arranged opposite to each other, and the distance between the end of the lower X-direction inward protrusion and the second side wall of the lower corner piece box is adapted to the width of the lower shear member; the lower Y-direction inward protrusion is formed by extending from the top end of the third side wall and the top end of the fourth side wall of the lower corner piece box towards each other, the third side wall and the fourth side wall of the lower corner piece box are arranged opposite to each other, and the distance between the two ends of the lower Y-direction inward protrusion is adapted to the length of the lower shear member.

4. The connection node of the modular stacked container building according to claim 1, characterized in that: An upper mounting socket cooperating with the upper pin is provided on the side wall of the upper corner piece box, and an upper hole reinforcement ring plate coaxially arranged with the upper mounting socket is also welded to the side wall of the upper corner piece box; A lower mounting socket cooperating with the lower pin shaft is provided on the side wall of the lower corner piece box, and a lower hole reinforcement ring plate coaxially arranged with the lower mounting socket is also welded on the side wall of the lower corner piece box.

5. The connection node of the modular stacked container building according to claim 1, characterized in that: The axis of the upper pin is parallel to the long side of the upper corner piece box; the axis of the lower pin is parallel to the long side of the lower corner piece box.

6. The connection node of the modular stacked container building according to claim 1, characterized in that: The main beam of the upper box-type module is fixedly connected to one outer side of the upper corner box, the outer side of the upper corner box to which the upper corbel is welded is arranged opposite to the outer side of the main beam connected to the upper box-type module, and the upper pin shaft is staggered with the main beam of the upper box-type module; The main beam of the lower box-type module is fixedly connected to an outer side surface of the lower corner fitting box, the outer side surface of the lower corner fitting box to which the lower corbel is welded is arranged opposite to the outer side surface of the main beam connected to the lower box-type module, and the lower pin shaft is staggered with the main beam of the lower box-type module.

7. The connection node of the modular stacked container building according to any one of claims 1 to 6, characterized in that: It also includes a connecting plate, the upper corner box, the lower corner box and the connecting end plate are each provided in two and symmetrically arranged, the connecting plate is arranged between the two connecting end plates, and one end of the connecting plate is fixedly connected to one connecting end plate, and the other end of the connecting plate is fixedly connected to the other connecting end plate.

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