Corrugated sandwich panel connection structure and its device

Abstract

The present invention discloses a corrugated sandwich panel connection structure and its device. This corrugated sandwich panel connection structure includes a longitudinal connection structure for connecting the upper corrugated sandwich panel and the lower corrugated sandwich panel in the longitudinal direction and a rubber pad for sealing. The longitudinal connection structure includes a longitudinal connector. Among them, the longitudinal connector includes a first upper wing plate, a first lower wing plate, and a first web plate that are oppositely arranged. One side of the first web plate away from the first upper wing plate and the first lower wing plate is in a corrugated shape to adapt to the corrugated form of the sandwich panel core layer. The longitudinal connector is located at the longitudinal connection of the upper sandwich panel and the lower sandwich panel. The fastening bolts pass through the upper sandwich panel, the lower sandwich panel, the longitudinal connector, and the rubber pad to fix and seal the four of them. This corrugated sandwich panel connection device facilitates the connection of corrugated sandwich panels to each other or (and) the connection of corrugated sandwich panels to stiffened plates.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated sandwich panel structures, and particularly to a corrugated sandwich panel connection structure and device thereof. Background Art

[0002] The corrugated sandwich panel is composed of upper and lower panels and a trapezoidal core layer in the middle. The upper and lower panels and the trapezoidal core layer are fixed into one body by bonding or laser welding. This functionally composite structure has the advantages of high specific strength and high specific stiffness. When applied to ship structures, steel bridge structures and steel building structures, it can not only improve strength and stiffness but also reduce the structural weight, save materials and reduce costs. Since the size of the corrugated sandwich panel produced in the factory is limited, just one corrugated sandwich panel cannot cover the entire deck, bridge deck or roof. In the above engineering practices, it is necessary to solve the "extension" problem of the corrugated sandwich panel itself, similar to the welding of steel plates, which can not only ensure the strength and stiffness of the components but also extend the area of the panel. Such problems are called the longitudinal butt joint and transverse butt joint of corrugated sandwich panels. In engineering practices, often part of the structure uses corrugated sandwich panels and the other part uses stiffened plates. This leads to another type of problem to be solved, that is, the butt joint between the corrugated sandwich panel and the stiffened plate and the T-shaped connection between the corrugated sandwich panel and the stiffened plate.

[0003] Welding is an effective way to solve various connection problems of stiffened plates in engineering, but it is very difficult to apply to corrugated sandwich panels because there are sealed cavities in the corrugated sandwich panels, which cannot be reached and thus construction cannot be carried out. Moreover, the panel thickness and core layer thickness of the corrugated sandwich panel are generally very small, and welding is prone to deformation.

[0004] At present, the connection structure and fixing method of the corrugated sandwich panel thought of by many engineers is welding fixation. Although this method can ensure watertightness, the limitation of space makes double-sided welding impossible to achieve, and it is easy to be welded off during use, and the welding part is also prone to deformation. For the longitudinal butt joint of corrugated sandwich panels, many connection structure designs only maintain the bending and shear resistance of the panel, but do not maintain the bending and shear resistance of the core layer, that is, the core layer is completely interrupted at the connection part. This will greatly weaken the bending and shear resistance of the corrugated sandwich panel at the connection position and cannot give full play to the mechanical advantages of the corrugated sandwich panel, which is extremely disadvantageous to the project. Summary of the Invention

[0005] The main purpose of the present invention is to provide a corrugated sandwich panel connection structure and device thereof, aiming to facilitate the connection between corrugated sandwich panels or (and) the connection between a corrugated sandwich panel and a stiffened plate.

[0006] To achieve the above object, the present invention provides a connecting structure for a corrugated sandwich panel, comprising a longitudinal connecting structure for connecting the upper corrugated sandwich panel and the lower corrugated sandwich panel in the longitudinal direction and a rubber pad for sealing; wherein, the longitudinal connecting structure comprises a longitudinal connecting member;

[0007] The longitudinal connecting member includes a first upper wing plate and a first lower wing plate arranged oppositely and two first webs fixed on the sides where the first upper wing plate and the first lower wing plate are close to each other. The free end of the first web is in a corrugated shape to adapt to the corrugated form of the sandwich panel core layer; the longitudinal connecting member is located at the longitudinal connection of the upper corrugated sandwich panel and the lower corrugated sandwich panel;

[0008] Rubber pads are provided between the first upper wing plate and the upper panel of the upper corrugated sandwich panel and between the first lower wing plate and the lower panel of the lower corrugated sandwich panel. Fasteners pass through the upper corrugated sandwich panel, the lower corrugated sandwich panel, the longitudinal connecting member and the rubber pads to fix and seal-connect the four.

[0009] Preferably, the connecting structure for the corrugated sandwich panel further comprises a first transverse connecting member for connecting two adjacent corrugated sandwich panels. The first transverse connecting member includes a second upper wing plate, a second lower wing plate and a second web connecting the second upper wing plate and the second lower wing plate. The second upper wing plate is attached to the rubber pad above the upper panel of the corrugated sandwich panel, and the second lower wing plate is attached to the rubber pad below the lower panel of the corrugated sandwich panel. The two sides of the second web are two corrugated sandwich panels to be connected. Fasteners pass through the first transverse connecting structure, the corrugated sandwich panel and the rubber pads to laterally fix and seal-connect the corrugated sandwich panels.

[0010] Preferably, the connecting structure for the corrugated sandwich panel further comprises a second transverse connecting member for connecting the corrugated sandwich panel and the first stiffening plate in the transverse direction. The second transverse connecting member includes a third upper wing plate, a third lower wing plate and a third web connecting the third upper wing plate and the third lower wing plate. The third upper wing plate is attached to the rubber pads above the corrugated sandwich panel and above the first stiffening plate, and the third lower wing plate is attached to the rubber pad below the corrugated sandwich panel. The upper end of the third web is connected to the middle of the third upper wing plate, and the lower end of the third web is connected to the edge of the third lower wing plate. Fasteners pass through the corrugated sandwich panel or the transverse stiffening plate, the third wing plate and the rubber pads to fix and seal-connect the corrugated sandwich panel and the transverse stiffening plate.

[0011] Preferably, the corrugated sandwich panel connection structure further includes a T-shaped connector for connecting the corrugated sandwich panel to the second stiffening plate in a T-shaped connection. The T-shaped connector includes a fourth upper flange, a fourth lower flange, and a fourth web connecting one side of the fourth upper flange and the fourth lower flange. The corrugated sandwich panel is embedded between the fourth upper flange and the fourth lower flange. Rubber pads are provided between the fourth upper flange and the upper panel of the corrugated sandwich panel, and between the fourth lower flange and the lower panel of the corrugated sandwich panel. Fasteners pass through the T-shaped connector, the rubber pads, and the corrugated sandwich panel, thereby firmly and sealingly connecting the T-shaped connector to the corrugated sandwich panel.

[0012] The present invention further provides a corrugated sandwich panel connection device, which includes the above-mentioned corrugated sandwich panel connection structure, and further includes an upper corrugated sandwich panel and a lower corrugated sandwich panel;

[0013] Both the upper corrugated sandwich panel and the lower corrugated sandwich panel include an upper panel, a lower panel, and a core layer located between the upper panel and the lower panel. The upper and lower ends of the core layer are respectively fixedly connected to the upper panel and the lower panel. The front and / or rear ends of the core layer extend outside the upper panel and the lower panel, and the top or bottom of the area where the core layer extends outside the upper panel and the lower panel is cut off.

[0014] Preferably, in the longitudinal connector of the corrugated sandwich panel connection structure, the overlapping area length of the core layers of the upper corrugated sandwich panel and the lower corrugated sandwich panel in the longitudinal direction is l0, and l0≥4l c ;

[0015] The width l of the first upper flange f1 and the thickness t of the first upper flange f1 and the thickness t of the first web c1 satisfy the following relationships:

[0016] l f1 ≥l0, t f1 ≥t t +t b +t c t c1 ≥t t +t b +t c ;

[0017] wherein, l c is the core layer period length of the corrugated sandwich panel to be connected, t t is the thickness of the upper panel, t b is the thickness of the lower panel, t c is the thickness of the core layer board.

[0018] Preferably, in the first transverse connector of the corrugated sandwich panel connection structure, the width l of the second upper flange f2 and the thickness t of the second upper flange f2, the thickness t of the second web c2 and the longitudinal spacing Δl2 of the fasteners on the first transverse connecting member satisfy the following relationship:

[0019] l f2 ≥4l c , t f2 ≥t t +t b +t c , t c2 ≥t t +t b +t c , Δl2≤3l c .

[0020] Preferably, in the second transverse connecting member of the corrugated sandwich panel connection structure, the width l of the third upper flange t3 , the width l of the third lower flange b3 , the thickness t of the third upper flange f3 , the thickness t of the third web c3 and the longitudinal spacing Δl3 of the fasteners on the second transverse connecting member satisfy the following relationship:

[0021] l t3 ≥4l c , l b3 ≥2l c , t f3 ≥t t +t b +t c , t c3 ≥t t +t b +t c , Δl3≤3l c .

[0022] Preferably, in the T-shaped connecting member of the corrugated sandwich panel connection structure, the width l of the fourth upper flange f4 , the thickness t of the fourth upper flange f4 , the height b of the fourth web f4 , the thickness t of the fourth web c4 and the longitudinal spacing Δl4 of the fasteners on the T-shaped connecting member satisfy the following relationship:

[0023] l f4 ≥2l c , t f4 ≥t t +t b +t c , b f4 ≥3(h c +t t +t b ), t c4 ≥tt +t b +t c ,Δl4 ≤ 3l c 。

[0024] The corrugated sandwich panel connecting device proposed by the present invention has the following beneficial effects:

[0025] 1. After longitudinal butt joint connection is achieved by using this longitudinal connecting piece, if the corrugated sandwich panel bears bending in the vertical plane (xoz plane) where the core layer bus is located, the core layer in the overlapping area can bear the stress along the longitudinal direction (x-axis) because it is closely fitted and locked by the front and rear bolts; if the corrugated sandwich panel bears shear in the plane perpendicular to the core layer bus (yoz plane), the core layer in the overlapping area transfers the shear force in a contact manner;

[0026] 2. The first transverse connecting piece is used to achieve the transverse butt joint between corrugated sandwich panels, and the second transverse connecting piece is used to achieve the transverse butt joint between the corrugated sandwich panel and the stiffening plate, keeping the panel continuous. If the corrugated sandwich panel (or stiffening plate) bears bending in the plane perpendicular to the core layer bus (yoz plane), both the resistance to bending and shear rely on the corrugated sandwich panel surface (or stiffening plate), so this connection method maintains the load-bearing capacity of the corrugated sandwich panel;

[0027] 3. The T-shaped connecting piece makes the stiffening plate become the fixed-end support of the corrugated sandwich panel, and evenly transfers the load of the corrugated sandwich panel to the stiffening plate. Spaces are reserved at both ends of the fourth web of the T-shaped connecting piece, which can be directly welded to the stiffening plate, greatly improving the construction efficiency;

[0028] 4. All connecting pieces are fixed to the corrugated sandwich panel (or stiffening plate) by bolts, which can provide great convenience for the later maintenance, repair and replacement of the corrugated sandwich panel. Only by disassembling the bolts can the corrugated sandwich panel with problems be disassembled, making the detection, repair and replacement of the corrugated sandwich panel involve very little engineering work, and at the same time solving the problem of difficult welding construction;

[0029] 5. Laying rubber on the contact surface between the corrugated sandwich panel and the connecting piece not only solves the watertight problem, but also disperses the concentrated stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1a is the front view schematic diagram of the corrugated sandwich panel to be connected in the present invention;

[0031] Figure 1b is the right view schematic diagram of the corrugated sandwich panel to be connected in the present invention;

[0032] Figure 1c is the top view schematic diagram of the corrugated sandwich panel to be connected in the present invention;

[0033] Figure 2aFront view schematic diagram of the longitudinal connector in the present invention;

[0034] Figure 2b is Figure 2a Cross-sectional schematic diagram in the E-E direction shown;

[0035] Figure 2c Top view schematic diagram of the longitudinal connector in the present invention;

[0036] Figure 3a Front view schematic diagram of the first transverse connector in the present invention;

[0037] Figure 3b Top view schematic diagram of the first transverse connector in the present invention;

[0038] Figure 4a Front view schematic diagram of the second transverse connector in the present invention;

[0039] Figure 4b Top view schematic diagram of the second transverse connector in the present invention;

[0040] Figure 5a Front view schematic diagram of the T-shaped connector in the present invention;

[0041] Figure 5b Top view schematic diagram of the T-shaped connector in the present invention;

[0042] Figure 6 Top view schematic diagram of the corrugated sandwich panel connection device in the present invention;

[0043] Figure 7 is Figure 6 Cross-sectional schematic diagram in the A-A direction shown;

[0044] Figure 8 is Figure 6 Cross-sectional schematic diagram in the B-B direction shown;

[0045] Figure 9 is Figure 6 Cross-sectional schematic diagram in the C-C direction shown;

[0046] Figure 10 is Figure 8 Cross-sectional schematic diagram in the D-D direction shown.

[0047] In the figure, 1. upper corrugated sandwich panel, 1-1. upper panel of the upper corrugated sandwich panel, 1-2. core layer of the upper corrugated sandwich panel 1, 1-3. lower panel of the upper corrugated sandwich panel, 2. lower corrugated sandwich panel, 2-1. upper panel of the lower corrugated sandwich panel, 2-1. core layer of the lower corrugated sandwich panel, 2-3. lower panel of the lower corrugated sandwich panel 2, 3. longitudinal connecting member, 3-1. first upper wing plate, 3-2. first web plate, 3-3. first lower wing plate, 4. first transverse connecting member, 4-1. second upper wing plate, 4-2. second web plate, 4-3. second lower wing plate, 5. second transverse connecting member, 5-1. third upper wing plate, 5-2. third web plate, 5-3. third lower wing plate, 6. T-shaped connecting member, 6-1. fourth upper wing plate, 6-2. fourth web plate, 6-3. fourth lower wing plate, 7. first stiffening plate, 8. rubber pad, 9. second stiffening plate.

[0048] In the figure, the thickness dimension of the rubber pad 8 is marked as t r1 and t r2 both represent the thickness before compression when not assembled and fixed.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0050] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0051] It should be noted that in the description of the present invention, the orientation or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] The present invention provides a connecting device for corrugated sandwich panels.

[0053] Referring to Figures 1a to 10 , in this preferred embodiment, a connecting device for corrugated sandwich panels includes a corrugated sandwich panel connecting structure, and also includes an upper corrugated sandwich panel 1 and a lower corrugated sandwich panel 2;

[0054] The upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 both include an upper panel, a lower panel, and a core layer located between the upper panel and the lower panel. The upper and lower ends of the core layer are respectively fixedly connected to the upper panel and the lower panel. The front and / or rear ends of the core layer extend outside the upper panel and the lower panel, and the top or bottom of the area where the core layer extends outside the upper panel and the lower panel is cut off.

[0055] The longitudinal connecting member 3 includes a relatively arranged first upper wing plate 3-1 and a first lower wing plate 3-3, and two first webs 3-2 located on the side where the first upper wing plate 3-1 and the first lower wing plate 3-3 are close to each other (the first webs 3-2 are connected to both sides where the first upper wing plate 3-1 and the first lower wing plate 3-3 are close to each other). The free end of the first web 3-2 is in a corrugated shape (that is, its free end is in a corrugated shape) to match the corrugated form of the core layer of the sandwich panel. The longitudinal connecting member 3 is located at the longitudinal connection of the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2.

[0056] The longitudinal connection structure further includes a rubber pad 8. Rubber pads 8 are provided between the first upper wing plate 3-1 and the upper panel of the upper corrugated sandwich panel 1 and between the first lower wing plate 3-3 and the lower panel of the lower corrugated sandwich panel 2. Fasteners (bolts can be used) pass through the upper corrugated sandwich panel 1, the lower corrugated sandwich panel 2, the longitudinal connecting member 3, and the rubber pad 8 to fixedly and sealingly connect the four.

[0057] The upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 are collectively referred to as the corrugated sandwich panel. The core layers of the two butt-jointed corrugated sandwich panels overlap up and down with each other. Due to the overlap, there must be one corrugated sandwich panel on the upper side and one on the lower side. The corrugated sandwich panel on the upper side is called the upper corrugated sandwich panel 1, and the one placed on the lower side is called the lower corrugated sandwich panel 2.

[0058] In the longitudinal connection structure, the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 are distinguished. In other types of transverse connection structures, the upper and lower corrugated sandwich panels are not distinguished and are collectively referred to as the corrugated sandwich panel.

[0059] The corrugated sandwich panel connection structure includes a longitudinal connection structure for connecting the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 in the longitudinal direction. The longitudinal connection structure includes a longitudinal connecting member 3, where

[0060] In this embodiment, it is preferably that the shape and size of the first upper wing plate 3-1 are the same as those of the first lower wing plate 3-3.

[0061] Refer to Figures 1a to 1c , the corrugated sandwich panel is composed of an upper panel, a lower panel, and an intermediate core layer. The materials of the upper panel, the lower panel, and the core layer are the same, and they can all be aluminum, or they can all be steel or other metal materials. The direction along the generatrix of the core layer is called the longitudinal direction, and the direction along the corrugation is called the transverse direction. As Figure 1cTaking the middle layer of the core layer height as the xoy plane, the longitudinal direction as the x-axis, the transverse direction as the y-axis, and the direction perpendicular to the xoy plane downward as the z-axis to establish a coordinate system. The corrugated sandwich panel has the following properties: the bending stiffness in the xoz plane is greater than that in the yoz plane, and the shear stiffness in the yoz plane is much greater than that in the xoz plane; the tensile stiffness in the x direction is greater than that in the y direction. Therefore, when laying the corrugated sandwich panel, the longitudinal direction (x direction) is the direction with a larger span of the component, and the transverse direction (y direction) is the direction with a smaller span of the component. For example, on a ship, the longitudinal direction of the corrugated sandwich panel is the length direction of the ship; on a bridge, the longitudinal direction of the corrugated sandwich panel is the main span direction of the bridge; in a building, the longitudinal direction of the corrugated sandwich panel is the long side direction of the roof. Such an arrangement can give full play to the potential of the corrugated sandwich panel to resist bending moments and the ability of the core layer to resist shear forces.

[0062] The longitudinal butt joint of the corrugated sandwich panel and the corrugated sandwich panel should also fully retain the above properties of the corrugated sandwich panel. Otherwise, the bearing capacity of the corrugated sandwich panel will be reduced at the longitudinal butt joint structure position, affecting its popularization and application in engineering.

[0063] In the longitudinal connecting member 3 of the corrugated sandwich panel connection structure, the overlapping area length of the core layers of the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 in the longitudinal direction is l0, and l0≥4l c ;

[0064] The width of the first upper wing plate 3-1 (or the width of the first lower wing plate 3-3) l f1 、the thickness of the first upper wing plate 3-1 (or the thickness of the first lower wing plate 3-3) t f1 and the thickness t of the first web 3-2 c1 satisfy the following relationships:

[0065] l f1 ≥l0, t f1 ≥t t +t b +t c ,t c1 ≥t t +t b +t c ;

[0066] Among them, l c is the core layer period length of the corrugated sandwich panel to be connected, t t is the thickness of the upper panel, t b is the thickness of the lower panel, t c is the thickness of the core layer board.

[0067] In the corrugated sandwich panel, the non-cutting length range of the reserved core layer is the t c1 length range starting from the end of the corrugated sandwich panel panel, that is, the cutting length range Δl of the reserved core layer should satisfy Δl = l - tc1 In the longitudinal direction of the core layer, the length l0 of the overlapping area is l0 = 2l - t c1 The lateral spacing of the fastening bolts is Δl1, and Δl1 ≤ 3l c Among them, l is the outer extension length of the front (or rear) core layer in the corrugated sandwich panel.

[0068] In the core layer, the outer width b1 of the V-shaped chamfer, the inner width b2, the inclination angle θ of the core layer, and the net height h of the core layer c The length of the corrugated sandwich panel (referring to the area with face plates) is a, and the width is b.

[0069] In order to cooperate with the use of the longitudinal connector 3, during the manufacturing of the corrugated sandwich panel, it is necessary to reserve some core layers without laying the upper and lower face plates (i.e., the front and rear extended core layers). The reserved core layer also needs to be cut to a certain height for insertion into the corrugated sandwich panel. The length of the core layer reserved for not laying the face plate on one side (front or rear) is l, and the cutting height is Δt. Then:

[0070]

[0071] The distances from the center of the screw hole on the longitudinal connector 3 to the edge of the first upper wing plate 3-1 or (the first lower wing plate 3-3) and the distance from the center of the screw hole to the first web 3-2 are both d1, and d1 satisfies the following relationship:

[0072] d1 ≥ 2φ;

[0073] Among them, φ is the diameter of the fastening bolt.

[0074] When longitudinally connecting the corrugated sandwich panel, in order to ensure that liquids such as water and oil outside the corrugated sandwich panel do not flow into the corrugated sandwich panel along the gap, a rubber pad 8 needs to be laid in the connection area of the upper face plate and the lower face plate. The thickness t of the thicker side of the rubber pad 8 r1 The thickness t of the thinner side of the rubber pad 8 r2 Laying the rubber pad 8 can also play a role in dispersing the concentrated stress and making the contact stress evenly distributed.

[0075] When performing longitudinal docking, first insert the core layer 1-2 of the upper corrugated sandwich panel 1 into the interior of the lower corrugated sandwich panel 2. At the same time, insert the core layer 2-2 of the lower corrugated sandwich panel 2 into the interior of the upper corrugated sandwich panel 1. A gap is reserved between the upper panel 1-1 of the upper corrugated sandwich panel 1 and the upper panel 2-1 of the lower corrugated sandwich panel 2 (a gap will also be left between the lower panel 1-3 and the lower panel 2-3). Lay a rubber pad 8 above the upper panels 1-1 and 2-1, and lay a rubber pad 8 above the first lower wing plate 3-3. Subsequently, insert the first web 3-2 of the longitudinal connector 3 into the gap, and push the corrugated sandwich panel 1 (or 2) back and forth to fully squeeze the gap and ensure full contact between the components, thus completing the temporary fixation. After temporary fixation, use 4 rows of bolts to pass through the longitudinal connector 3, the corrugated sandwich panels 1 and 2 at the front and rear positions of the first upper wing plate 3-1, and cooperate with the spring washers and nuts installed below the lower panels 1-3 and 2-3 to permanently fix the parts at the connection site. The front and rear ends of the upper corrugated sandwich panel 1 always remain on the upper layer, and the front and rear ends of the lower corrugated sandwich panel 2 always remain on the lower layer. When continuously docking multiple corrugated sandwich panels longitudinally, the up-and-down order of the corrugated sandwich panels maintains a reciprocating cycle of "upper layer → lower layer → upper layer → lower layer..." (or "lower layer → upper layer → lower layer → upper layer...").

[0076] Further, referring to Figure 3a 、 Figure 3b and Figure 6 ,this corrugated sandwich panel connection structure further includes a first transverse connector 4 for connecting two adjacent corrugated sandwich panels. The first transverse connector 4 includes a second upper wing plate 4-1, a second lower wing plate 4-3, and a second web 4-2 connecting the second upper wing plate 4-1 and the second lower wing plate 4-3. The second upper wing plate 4-1 is arranged in contact with the rubber pad 8 above the upper panel of the corrugated sandwich panel, and the second lower wing plate 4-3 is arranged in contact with the rubber pad 8 below the lower panel of the corrugated sandwich panel. On both sides of the second web 4-2 are two corrugated sandwich panels to be connected. Fasteners pass through the first transverse connection structure, the corrugated sandwich panel, and the rubber pad 8 to horizontally fix and seal-connect the corrugated sandwich panels. The sizes and shapes of the second upper wing plate 4-1 and the second lower wing plate 4-3 are preferably the same.

[0077] The second web 4-2 can be composed of two coplanar and butted flat plates, that is to say, the second web 4-2 is disconnected up and down at the height center position and divided into two coplanar and butted flat plates, mainly considering the operability of laying the rubber pad 8 and improving the installation efficiency. Since the bending in the yoz plane and the shear in the xoz plane are mainly borne by the upper and lower panels of the corrugated sandwich panel, the transverse butt joint of the corrugated sandwich panel needs to keep the panel continuous, while the core layer can be discontinuous. The process of connecting the sandwich panels with the first transverse connector 4 is very convenient. The corrugated sandwich panels on the left and right sides are placed on the same plane, with a gap reserved in the middle. After temporary fixation, the first transverse connector 4 is placed in the gap between the left and right corrugated sandwich panels, and the gap is adjusted so that the left and right corrugated sandwich panels are closely attached to the second web 4-2 of the first transverse connector 4. Then, bolts are passed through the connecting members and the corrugated sandwich panels, and then fixed with nuts and gaskets.

[0078] Specifically, when realizing the transverse connection, two (or more) corrugated sandwich panels to be transversely butted are placed on the same plane, and the gap between the corrugated sandwich panels is e1. The second web 4-2 of the first transverse connector 4 is placed in the gap between the corrugated sandwich panels, aligned up and down, and the gap is adjusted to become e2, as shown in the attached Figure 7 - attached Figure 9 figure, so that the left and right corrugated sandwich panels are closely attached to the second web 4-2. At the left and right positions of the second upper wing plate 4-1, 4 rows of bolts are passed through the first transverse connector 4 and the corrugated sandwich panel, and spring washers and nuts installed below the lower panel are used to permanently fix the parts at the connection part. Similar to the longitudinal connection, in order to ensure that liquids such as water and oil outside the corrugated sandwich panel do not flow into the inside of the corrugated sandwich panel along the gap, and at the same time disperse the concentrated stress, a rubber pad 8 is laid in the connection area of the upper and lower panels. The thickness of the rubber pad 8 on the thicker side is t r1 , and the thickness of the rubber pad 8 on the thinner side is t r2 .

[0079] When the longitudinal connection structure 3 meets the first transverse connector 4, the first transverse connector 4 is kept continuous, while the longitudinal connection structure 3 is discontinuous, that is, there are longitudinal connectors 3 on both sides of the first transverse connector 4.

[0080] Specifically, the width l f2 of the second upper wing plate 4-1 (or the second lower wing plate 4-3), the thickness t f2 of the second upper wing plate 4-1 (or the second lower wing plate 4-3), the thickness t c2 of the second web 4-2, and the longitudinal pitch Δl2 of the fastening bolts on the first transverse connector 4 satisfy the following relationships: l f2 ≥4l c , t f2 ≥t t +t b +tc , t c2 ≥t t +t b +t c , Δl2≤3l c .

[0081] The distance from the center of the screw hole of the first transverse connector 4 to the edge of the second upper wing plate 4-1 (or the second lower wing plate 4-3) is the same as the distance from the center of the screw hole to the second web 4-2, both being d2, and d2≥2φ.

[0082] When temporarily fixed, the initial gap between the corrugated sandwich panels is e1, e1>t c2 ,

[0083] When permanently fixed, the final gap between the corrugated sandwich panels is e2, e2 = t c2 .

[0084] Further, refer to Figure 4a 、 Figure 4b and Figure 6 The corrugated sandwich panel connection structure also includes a second transverse connector 5 for transversely connecting the corrugated sandwich panel and the first stiffening panel 7. The second transverse connector 5 includes a third upper wing panel 5-1, a third lower wing panel 5-3, and a third web 5-2 connecting the third upper wing panel 5-1 and the third lower wing panel 5-3. The third upper wing panel 5-1 is fitted with the rubber pad 8 above the corrugated sandwich panel and above the first stiffening panel 7, and the third lower wing panel 5-3 is fitted with the rubber pad 8 below the corrugated sandwich panel. The upper end of the third web 5-2 is connected to the middle of the third upper wing panel 5-1, and the lower end of the third web 5-2 is connected to the edge of the third lower wing panel 5-3. Fasteners pass through the corrugated sandwich panel or the first stiffening panel 7, the third wing panel, and the rubber pad 8 to fix and seal the corrugated sandwich panel and the first stiffening panel 7.

[0085] The left-side fastening bolts pass through the corrugated sandwich panel 1 (or 2), the second transverse connecting structure 5, and the rubber pad 8. The right-side fastening bolts pass through the third upper wing panel 5-1, the rubber pad 8, and the first stiffening panel 7. Together with the nuts and washers, they securely connect the corrugated sandwich panel to the first stiffening panel 7. The space formed between the third upper wing panel 5-1 and the third lower wing panel 5-3 is used to accommodate the corrugated sandwich panel. The third web 5-2 has the corrugated sandwich panel on one side and the first stiffening panel 7 on the other, thus achieving a transverse connection between the corrugated sandwich panel and the first stiffening panel 7.

[0086] The second transverse connecting member 5 is designed in the shape of an I-beam lacking half of the flange. The side lacking the flange is connected to the first stiffening plate 7, and the other side is connected to the corrugated sandwich panel. This is mainly considered that the plate thickness of the transverse stiffening plate 7 is generally much smaller than the overall thickness of the corrugated sandwich panel. The third web 5-2 is disconnected at the center height position and divided into two coplanar butt-jointed flat plates. Similarly, considering the operability of laying the rubber pad 8 and improving the installation efficiency, it can be welded into a whole after assembly.

[0087] Specifically, the width l of the third upper flange 5-1 of the second transverse connecting member 5 t3 、the width l of the third lower flange 5-3 b3 、the thickness t of the third upper flange 5-1 (or the third lower flange 5-3) f3 、the thickness t of the third web 5-2 c3 、the longitudinal pitch Δl3 of the fastening bolts on the second transverse connecting member 5 satisfies the following relationships:

[0088] l t3 ≥4l c ,l b3 ≥2l c ,t f3 ≥t t +t b +t c ,t c3 ≥t t +t b +t c ,Δl3≤3l c 。

[0089] The distance from the center of the screw hole on the second transverse connecting member 5 to the edge of the third upper flange 5-1 is the same as the distance from the center of the screw hole to the third web 5-2, both being d3, and d3≥2φ.

[0090] When realizing the transverse butt-joint of the corrugated sandwich panel and the first stiffening plate 7 on its right side, place the upper panel of the corrugated sandwich panel to be transversely butted and the first stiffening plate 7 on the same plane, leaving a gap e3 in the middle. After temporary fixation, insert the third web 5-2 into the gap and align it vertically and horizontally, and adjust the gap between the corrugated sandwich panel and the transverse stiffening plate 7 so that the gap reaches e4. As shown in the appendix Figure 6 - appendix Figure 9, on the left side of the third web 5-2, two columns of bolts pass through the second transverse connection structure 5, the corrugated sandwich panel and the rubber pad 8. On the right side of the third web 5-2, two columns of bolts pass through the second transverse connector 5, the rubber pad 8 and the first stiffening plate 7, and are fitted with spring washers and nuts below the third lower flange 5-3 and the first stiffening plate 7 to permanently fix the parts at the connection position. Similar to the previous connection structure, rubber 8 is laid in the upper panel connection area and the transverse stiffening plate 7 connection area, aiming to ensure that liquids such as water and oil outside the corrugated sandwich panel do not flow into the inside of the corrugated sandwich panel along the gaps, and at the same time disperse the concentrated stress. The thickness t of the rubber pad 8 on the thicker side r1 , the thickness t of the rubber on the thinner side r2 . After the assembly is completed, weld the butt joint seams of the third web 5-2 with coplanar butt joints to connect the third upper web 5-1 and the third lower web 5-2 into one body.

[0091] When the longitudinal connection structure 3 meets the second transverse connector 5, keep the second transverse connector 5 continuous while the longitudinal connection structure 3 is discontinuous.

[0092] During temporary fixation, the initial gap e3 between the corrugated sandwich panel and the first stiffening plate 7, e3 > t c3 .

[0093] During permanent fixation, the final gap e4 between the corrugated sandwich and the first stiffening plate 7, e4 = t c3 .

[0094] Furthermore, referring to Figure 5a , Figure 5b and Figure 6 , the corrugated sandwich panel connection structure further includes a T-shaped connector 6 for connecting the corrugated sandwich panel to the second stiffening plate 9. The T-shaped connector 6 includes a fourth upper flange 6-1, a fourth lower flange 6-3, and a fourth web 6-2 connecting one side of the fourth upper flange 6-1 and the fourth lower flange 6-3. The corrugated sandwich panel is embedded between the fourth upper flange 6-1 and the fourth lower flange 6-3. Rubber pads 8 are provided between the fourth upper flange 6-1 and the upper panel of the corrugated sandwich panel, and between the fourth lower flange 6-3 and the lower panel of the corrugated sandwich panel. Fasteners pass through the T-shaped connector 6, the rubber pad 8 and the corrugated sandwich panel, thereby firmly and sealingly connecting the T-shaped connector to the corrugated sandwich panel. The fourth upper flange 6-1 and the fourth lower flange 6-3 preferably have the same shape and size.

[0095] Preferably, the fourth web 6-2 is disconnected at the height center position and divided into two coplanar butt-jointed flat plates. Similarly, considering the operability of laying the rubber pad 8 and improving the installation efficiency, it can be welded into a whole after assembly.

[0096] Specifically, the width l of the fourth upper flange 6-1 (or the fourth lower flange 6-3) f4, the thickness t of the fourth upper wing plate 6-1 (or the fourth lower wing plate 6-3) f4 , the width b of the fourth web 6-2 f4 , the thickness t of the fourth web 6-2 c4 And the longitudinal pitch Δl4 of the fasteners on the T-shaped connector 6 satisfies the following relationship:

[0097] l f4 ≥2l c , t f4 ≥t t +t b +t c , b f4 ≥3(h c +t t +t b ), t c4 ≥t t +t b +t c , Δl4≤3l c .

[0098] The distance from the center of the screw hole of the T-shaped connector 6 to the edge of the fourth upper wing plate 6-1 is the same as the distance from the center of the screw hole to the fourth web 6-2, both are d4, and d4≥2φ.

[0099] When the corrugated sandwich panel is T-shaped connected and installed with the second stiffening plate 9, place the T-shaped connector 6, the fourth upper wing plate 6-1 and the fourth lower wing plate 6-3 on the upper and lower edges of the corrugated sandwich panel 1 (or 2) respectively, and align them up and down so that the two fourth webs 6-2 are aligned and coplanar; adjust the gap between the fourth web 6-2 and the corrugated sandwich panel 1 (or 2) to achieve close fit, as shown in the appendix Figure 6 -Appendix Figure 9 . Pass 2 rows of bolts through the T-shaped connector 6 and the corrugated sandwich panel at the left and right positions of the fourth upper wing plate 6-1, and cooperate with the spring washers and nuts installed under the lower panel to permanently fix the parts at the connection part. The upper and lower ends of the fourth web 6-2 can be directly welded to the second stiffening plate 9. Similar to the previous connection, in order to ensure that liquids such as water and oil outside the corrugated sandwich panel do not flow into the inside of the corrugated sandwich panel along the gap, and at the same time disperse the concentrated stress, a rubber pad 8 should be laid in the connection area of the upper panel and the lower panel of the corrugated sandwich panel. The thickness t of the rubber pad 8 on the thicker side r1 , the thickness t of the rubber pad 8 on the thinner side r2 . After the assembly is completed, weld the butt joints of the fourth webs 6-2 that are coplanar to connect the upper and lower fourth webs 6-2 into one body.

[0100] When the longitudinal connector 3 meets the T-shaped connector 6, keep the T-shaped connector 6 continuous while the longitudinal connector 3 is discontinuous.

[0101] In this application, the four types of sub-structures (including the longitudinal connecting member 3, the first transverse connecting member 4, the second transverse connecting member 5, and the T-shaped connecting member 6) can be used alone or in combination of two or more types.

[0102] For the simultaneous use of the above four types of sub-structures for the connection of the corrugated sandwich panel sheathing, the net heights H of all the upper and lower wing plates should be the same, and,

[0103] H = h c + t t + t b + t r1 + t r2 - c.

[0104] Where c is the thickness of the rubber allowance for the thickness compressed during connection, usually c = 4 mm. The thickness t of the thinner rubber pad 8 r2 = 6 mm. The thickness of the thicker side needs to be determined according to the cross-sectional parameters of the corrugated sandwich panel, and its calculation formula is:

[0105]

[0106] If only any one of the first transverse connecting member 4, the second transverse connecting member 5, and the T-shaped connecting member 6 is used alone, or any combination of two or three of these three types of sub-structures, the thickness of the rubber layer remains the same, without distinction between the thinner side and the thicker side. In this case, the thickness of the rubber layer t r = 6 mm.

[0107] Through finite element simulation calculation, when the corrugated sandwich panel is under tensile, compressive, bending, and shear loads, when the four connection components proposed by the present invention are used for longitudinal and transverse connection, the strength and stiffness of the connection components are not lower than those of the corrugated sandwich panel itself.

[0108] The corrugated sandwich panel connection device proposed by the present invention has the following beneficial effects:

[0109] 1. After the longitudinal butt joint connection is realized by using the present longitudinal connecting member 3, if the corrugated sandwich panel is bent in the xoz plane, the core layer in the overlapping area can withstand the stress along the longitudinal direction (x-axis direction) because it is closely attached and locked by the front and rear bolts; if the corrugated sandwich panel is sheared in the yoz plane, the core layer in the overlapping area transfers the shear force in a contact manner;

[0110] 2. By using the present first transverse connecting member 4 and the second transverse connecting member 5 to realize the transverse butt joint of the corrugated sandwich panel and the transverse butt joint of the corrugated sandwich panel and the stiffening plate 7, the continuity of the panel can be maintained. If the corrugated sandwich panel 1 (or the first stiffening plate 7) is bent in the yoz plane, both the bending resistance and the shear force resistance rely on the upper panel 1-1 and the lower panel 1-3 (or the first stiffening plate 7). Therefore, this connection method maintains the load-bearing capacity of the corrugated sandwich panel;

[0111] 3. The T-shaped connector 6 is adopted to make the second stiffening plate 9 become the fixed-end support of the corrugated sandwich panel 1, and evenly transfer the load of the corrugated sandwich panel 1 to the second stiffening plate 9. Spaces are reserved at both ends of the fourth web 6-2 of the T-shaped connector 6, which can be directly welded to the second stiffening plate 9, greatly improving the construction efficiency;

[0112] 4. The connection structure proposed by the present invention and the corrugated sandwich panel (or stiffening plate) are all fixed by bolts, which can provide great convenience for the later maintenance, repair and replacement of the corrugated sandwich panel. Only by disassembling the bolts can the problematic corrugated sandwich panel be disassembled, making the detection, repair and replacement of the corrugated sandwich panel involve very little engineering work, and at the same time solving the problem of difficult welding construction;

[0113] 5. Laying rubber on the contact surface between the corrugated sandwich panel and the connection structure not only solves the watertight problem, but also disperses the concentrated stress.

[0114] The present invention further proposes a corrugated sandwich panel connection structure.

[0115] In this preferred embodiment, a corrugated sandwich panel connection structure includes a longitudinal connection structure for connecting the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2 in the longitudinal direction. The longitudinal connection structure includes a longitudinal connector 3, wherein,

[0116] The longitudinal connector 3 includes a first upper wing plate 3-1 and a first lower wing plate 3-3 arranged oppositely and a first web 3-2 located between the first upper wing plate 3-1 and the first lower wing plate 3-3. One side of the first web 3-2 away from the first upper wing plate 3-1 and the first lower wing plate 3-3 is corrugated to match the corrugated form of the sandwich panel core layer. The longitudinal connector 3 is located at the longitudinal connection of the upper corrugated sandwich panel 1 and the lower corrugated sandwich panel 2.

[0117] The longitudinal connection structure further includes rubber pads 8. Rubber pads 8 are provided between the first upper wing plate 3-1 and the upper panel of the upper corrugated sandwich panel 1 and between the first lower wing plate 3-3 and the lower panel of the lower corrugated sandwich panel 2. Fasteners pass through the upper corrugated sandwich panel 1, the lower corrugated sandwich panel 2, the longitudinal connector 3 and the rubber pads 8 to fix and seal the four components.

[0118] Furthermore, the corrugated sandwich panel connection structure further includes a first transverse connecting member 4 for connecting two adjacent corrugated sandwich panels. The first transverse connecting member 4 includes a second upper wing plate 4-1, a second lower wing plate 4-3, and a second web 4-2 connecting the second upper wing plate 4-1 and the second lower wing plate 4-3. The second upper wing plate 4-1 is arranged in contact with the rubber pad 8 above the upper panel of the corrugated sandwich panel, and the second lower wing plate 4-3 is arranged in contact with the rubber pad 8 below the lower panel of the corrugated sandwich panel. The two corrugated sandwich panels to be connected are on both sides of the second web 4-2. Fasteners pass through the first transverse connection structure, the corrugated sandwich panel, and the rubber pad 8 to laterally fix and seal-connect the corrugated sandwich panels.

[0119] Furthermore, the corrugated sandwich panel connection structure further includes a second transverse connecting member 5 for connecting the corrugated sandwich panel and the first stiffening plate 7 in a transverse connection. The second transverse connecting member 5 includes a third upper wing plate 5-1, a third lower wing plate 5-3, and a third web 5-2 connecting the third upper wing plate 5-1 and the third lower wing plate 5-3. The third upper wing plate 5-1 is arranged in contact with the rubber pad 8 above the corrugated sandwich panel and above the first stiffening plate 7, and the third lower wing plate 5-3 is arranged in contact with the rubber pad 8 below the corrugated sandwich panel. The upper end of the third web 5-2 is connected to the middle of the third upper wing plate 5-1, and the lower end of the third web 5-2 is connected to the edge of the third lower wing plate 5-3. Fasteners pass through the corrugated sandwich panel or the first stiffening plate 7, the second transverse connecting member 5, and the rubber pad 8 to fix and seal-connect the corrugated sandwich panel and the first stiffening plate 7.

[0120] Furthermore, the corrugated sandwich panel connection structure further includes a T-shaped connecting member 6 for connecting the corrugated sandwich panel and the second stiffening plate 9 in a T-shaped connection. The T-shaped connecting member 6 includes a fourth upper wing plate 6-1, a fourth lower wing plate 6-3, and a fourth web 6-2 connecting one side of the fourth upper wing plate 6-1 and the fourth lower wing plate 6-3. The corrugated sandwich panel is embedded between the fourth upper wing plate 6-1 and the fourth lower wing plate 6-3. Rubber pads 8 are arranged between the fourth upper wing plate 6-1 and the upper panel of the corrugated sandwich panel, and between the fourth lower wing plate 6-3 and the lower panel of the corrugated sandwich panel. Fasteners pass through the T-shaped connecting member 6, the rubber pad 8, and the corrugated sandwich panel to firmly and seal-connect the T-shaped connecting member 6 and the corrugated sandwich panel.

[0121] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A corrugated sandwich panel connection structure, characterized in that, It includes a longitudinal connection structure for connecting the upper corrugated sandwich panel and the lower corrugated sandwich panel in the longitudinal direction and a rubber gasket for sealing; wherein, the longitudinal connection structure includes a longitudinal connector. The longitudinal connector includes a first upper wing plate and a first lower wing plate which are oppositely arranged and two first webs fixed on the side where the first upper wing plate and the first lower wing plate are close to each other. The free end of the first web is in a corrugated shape to match the corrugated form of the sandwich panel core layer; the longitudinal connector is located at the longitudinal connection of the upper corrugated sandwich panel and the lower corrugated sandwich panel, and the longitudinal connection means perpendicular to the corrugation propagation direction of the sandwich panel core layer. Rubber gaskets are provided between the first upper wing plate and the upper panel of the upper corrugated sandwich panel and between the first lower wing plate and the lower panel of the lower corrugated sandwich panel. Fasteners pass through the upper corrugated sandwich panel, the lower corrugated sandwich panel, the longitudinal connector and the rubber gasket to fix and seal-connect the four.

2. The corrugated sandwich panel connection structure according to claim 1, characterized in that, It also includes a first transverse connector for connecting two adjacent corrugated sandwich panels. The first transverse connector includes a second upper wing plate, a second lower wing plate and a second web connecting the second upper wing plate and the second lower wing plate. The second upper wing plate is attached to the rubber gasket above the upper panel of the corrugated sandwich panel, and the second lower wing plate is attached to the rubber gasket below the lower panel of the corrugated sandwich panel. The two sides of the second web are two corrugated sandwich panels to be connected. Fasteners pass through the first transverse connector, the corrugated sandwich panel and the rubber gasket to laterally fix and seal-connect the corrugated sandwich panels.

3. The corrugated sandwich panel connection structure according to claim 2, characterized in that, It also includes a second transverse connector for connecting the corrugated sandwich panel and the first stiffening plate in a transverse connection. The second transverse connector includes a third upper wing plate, a third lower wing plate and a third web connecting the third upper wing plate and the third lower wing plate. The third upper wing plate is attached to the rubber gasket above the corrugated sandwich panel and above the first stiffening plate, and the third lower wing plate is attached to the rubber gasket below the corrugated sandwich panel. The upper end of the third web is connected to the middle of the third upper wing plate, and the lower end of the third web is connected to the edge of the third lower wing plate. Fasteners pass through the corrugated sandwich panel and the first stiffening plate, the third upper wing plate and the rubber gasket to fix and seal-connect the corrugated sandwich panel and the first stiffening plate.

4. The corrugated sandwich panel connection structure according to claim 3, characterized in that It also includes a T-shaped connector for connecting the corrugated sandwich panel and the second stiffening plate in a T-shaped connection. The T-shaped connector includes a fourth upper wing plate, a fourth lower wing plate and a fourth web connecting one side of the fourth upper wing plate and the fourth lower wing plate. The corrugated sandwich panel is embedded between the fourth upper wing plate and the fourth lower wing plate. Rubber gaskets are provided between the fourth upper wing plate and the upper panel of the corrugated sandwich panel and between the fourth lower wing plate and the lower panel of the corrugated sandwich panel. Fasteners pass through the T-shaped connector, the rubber gasket and the corrugated sandwich panel to firmly and seal-connect the T-shaped connector and the corrugated sandwich panel.

5. A corrugated sandwich panel connecting device, characterized in that, It includes the corrugated sandwich panel connection structure as described in claim 4, and also includes an upper corrugated sandwich panel and a lower corrugated sandwich panel. The upper corrugated sandwich panel and the lower corrugated sandwich panel both include an upper panel, a lower panel and a core layer located between the upper panel and the lower panel. The upper and lower ends of the core layer are respectively fixedly connected to the upper panel and the lower panel. The front and / or rear ends of the core layer extend outside the upper panel and the lower panel, and the top or bottom of the area where the core layer extends outside the upper panel and the lower panel is cut off.

6. The corrugated sandwich panel connecting device according to claim 5, characterized in that, In the longitudinal connector of the corrugated sandwich panel connection structure, the length of the overlapping area in the longitudinal direction of the core layers of the upper corrugated sandwich panel and the lower corrugated sandwich panel is , ; Width of the first upper wing plate , thickness of the first upper wing plate and thickness of the corrugated core board satisfy the following relationship: ， ， ； Among them, is the core layer period length of the corrugated sandwich panel to be connected, is the thickness of the upper panel, is the thickness of the lower panel, is the thickness of the core layer board.

7. The corrugated sandwich panel connecting device according to claim 6, wherein, In the first transverse connecting member of the corrugated sandwich panel connection structure, the width of the second upper wing plate , the thickness of the second upper wing plate , the thickness of the second web and the longitudinal spacing of the fasteners on the first transverse connecting member satisfy the following relationship: ， ， ， 。 8. The corrugated sandwich panel connecting device according to claim 6, characterized in that, In the second transverse connecting member of the corrugated sandwich panel connection structure, the width of the third upper wing plate , the width of the third lower wing plate , the thickness of the third upper wing plate , the thickness of the third web , and the longitudinal spacing of the fasteners on the second transverse connecting member satisfy the following relationships: ， ， ， ， 。 9. The corrugated sandwich panel connecting device according to claim 6, wherein, In the T-shaped connector of the corrugated sandwich panel connection structure, the width of the fourth upper wing plate , the thickness of the fourth upper wing plate , the height of the fourth web , the thickness of the fourth web and the longitudinal pitch of the fasteners on the T-shaped connector satisfy the following relationship: ， ， ， ， 。

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