Connecting structure of UHPC (Ultra High Performance Concrete) and metal honeycomb

Abstract

The utility model belongs to the field of anti-collision facilities, and particularly relates to a connecting structure of UHPC and a metal honeycomb, and the connecting structure uses shear nails and a reinforcing mesh to complete connection of the UHPC and the metal honeycomb. In the aspect of application scenes, the connecting structure can be connected with the UHPC and the metal honeycombs using panels made of different materials, and the possibility of punching damage caused by welding of shear nails and the panels is avoided; the reinforcing mesh is located behind the face plate and tightly attached to the face plate, crack development after the ultra-high performance concrete layer is damaged by loads is limited, concentrated loads are dispersed to honeycomb units in wider metal honeycombs, and the energy absorption effect of the UHPC-metal honeycomb combined structure is fully exerted. All the components are simple in machining process, factory production can be achieved, connection operation between the components is simple, and engineering construction is facilitated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of anti-collision facilities, in particular to a connecting structure of UHPC and metal honeycomb. BACKGROUND

[0002] In the anti-ship collision facility, there is an anti-collision device using UHPC (Ultra-High Performance Concrete) as an anti-collision outer wall and a honeycomb structure as an energy absorption structure, which can effectively absorb the energy of ship collision, prolong the collision time sequence and reduce the load borne by the bridge and the ship during the collision process. At present, the connection mode of UHPC and the honeycomb structure has the following problems: directly bonding UHPC and the honeycomb by using a bonding process, the bonding strength between the two is low, and peeling off easily occurs under slight collision; using shear pins to connect UHPC and the honeycomb, which is affected by the material and thickness of the honeycomb panel, the shear pins and the panel are easy to be damaged by punching, resulting in loss of connection capacity.

[0003] In view of the connection problem of UHPC and the honeycomb structure, some experts and scholars have proposed some solutions. Xia Hongxiang proposes to connect the honeycomb sandwich and UHPC by shear pins in the patent "Bridge pier anti-vehicle collision device". The anti-collision device includes an ultra-high strength concrete panel and a bionic honeycomb column thin-walled structure. The UHPC panel and the honeycomb thin-walled structure are connected by shear pins and rib plates. The constraint plate in the patent restricts the deformation of the UHPC, enhances the bearing capacity of the UHPC panel, and the rib and the shear pin enhance the connection between the UHPC and the honeycomb thin-walled structure. However, there are the following problems: 1. using constraint plates, rib plates, shear pins and honeycomb panels to connect UHPC and the honeycomb, which involves many components and has a complex structure; 2. the connection between the rib plate and the constraint plate, the connection between the shear pin and the honeycomb panel, the connection between the constraint plate and the honeycomb panel, and the connection between the honeycomb and the honeycomb panel have high connection processing difficulty; 3. the problem of punching damage of the shear pin and the honeycomb panel is not solved; 4. it is difficult to use shear pins to connect the honeycomb aluminum alloy panel or other composite material panel. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the application provides a connecting structure of UHPC and metal honeycomb, aiming to provide a UHPC-metal honeycomb combined structure connection mode with sufficient connection capacity, wide application scenarios, simple processing and strong durability.

[0005] To achieve the above object, the application provides a connecting structure of UHPC and metal honeycomb, comprising, from top to bottom, an ultra-high performance concrete layer, a panel and a metal honeycomb, the axial direction of the through hole on the metal honeycomb is perpendicular to the plane where the panel is located, the panel and the metal honeycomb are connected by welding or gluing, a steel mesh is arranged between the metal honeycomb and the panel, a plurality of through holes are uniformly distributed on the panel, a shear pin is arranged in each through hole, one end of the shear pin is fixedly connected with the steel mesh, and the other end of the shear pin is cast in the ultra-high performance concrete layer.

[0006] Optionally, one end of the shear pin is fixedly connected with the steel mesh by welding.

[0007] Optionally, a plurality of connecting sleeves are vertically arranged on the steel mesh, and a plurality of the through holes are arranged one by one corresponding to a plurality of the connecting sleeves, and one end of the shear pin is fixedly connected with the connecting sleeve.

[0008] Optionally, an internal thread is arranged in the connecting sleeve, and one end of the shear pin is screwed with the connecting sleeve.

[0009] Optionally, the steel mesh comprises a plurality of horizontal steels and vertical steels arranged in a crisscross manner, the horizontal steels and the vertical steels are fixedly connected at the intersection, the horizontal steels and / or the vertical steels are connected in series by a plurality of steel segments through a tee joint, and the unused end of the tee joint forms the connecting sleeve.

[0010] Optionally, the intersection of the horizontal steels and the vertical steels is fixed by binding or welding.

[0011] Optionally, the side of the metal honeycomb close to the panel is provided with an embedding groove for embedding the steel mesh.

[0012] Optionally, the material of the panel is steel, aluminum alloy, carbon fiber or composite material.

[0013] The connecting structure of UHPC and metal honeycomb provided by the application has at least the following beneficial effects:

[0014] 1. Simple structure: the connection between the ultra-high performance concrete layer, the panel and the metal honeycomb is realized by the steel mesh and the shear pin, so that the structure is simple and convenient for construction;

[0015] 2. Wide application scenarios: since the shear pin and the panel on the metal honeycomb are not directly connected by welding, the possibility of shear failure of the panel is avoided; the UHPC can be connected with the metal honeycomb using different material panels (aluminum alloy panel, carbon fiber panel or other composite material panel);

[0016] 3. More uniform deformation in collision: the steel mesh is connected to the shear nail, and is located behind the UHPC layer and close to the panel on the metal honeycomb. When the UHPC layer is damaged by collision load, the development of cracks in the UHPC layer is inhibited, and the load is transmitted to a larger range of metal honeycomb, so that the combined structure of UHPC and metal honeycomb deforms more uniformly in collision. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Among them:

[0019] Figure 1 is a schematic diagram of the connection structure of UHPC and metal honeycomb shown in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the connection structure of UHPC and metal honeycomb shown in an embodiment of the present application; Figure 1

[0021] Figure 3 is a schematic diagram of the connection structure of UHPC and metal honeycomb shown in an embodiment of the present application.

[0022] Main element symbol explanation:

[0023] 10, UHPC layer;

[0024] 20, panel;

[0025] 30, metal honeycomb;

[0026] 100, steel mesh; 101, connecting sleeve; 110, cross bar; 120, longitudinal bar; 130, tee joint;

[0027] 200, shear nail. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the related drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be realized in many other different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0029] ​It should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments of the present application and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] It should also be noted that the same reference signs are used to represent the same components or the same parts in the embodiments of the present application. For the same parts in the embodiments of the present application, only one part or component may be labeled with a reference sign in the drawings, and it should be understood that the reference sign is also applicable to other identical parts or components.

[0033] The embodiments of the present application provide a connecting structure of UHPC and metal honeycomb, as shown in Figures 1 to 2 The connecting structure of UHPC and metal honeycomb includes, from top to bottom, an ultra-high performance concrete layer 10, a panel 20 and a metal honeycomb 30, the axial direction of the through hole on the metal honeycomb 30 is perpendicular to the plane where the panel 20 is located, the panel 20 and the metal honeycomb 30 are connected by welding or gluing, a steel mesh 100 is arranged between the metal honeycomb 30 and the panel 20, a plurality of through holes are uniformly distributed on the panel 20, a shear pin 200 is arranged in each through hole, one end of the shear pin 200 is fixedly connected with the steel mesh 100, and the other end is cast in the ultra-high performance concrete layer 10, the ultra-high performance concrete layer 10 and the panel 20 and the metal honeycomb 30 connected by welding / gluing are connected by the shear pin 200.

[0034] The material of the panel 20 can be steel, aluminum alloy, carbon fiber or composite material.

[0035] In the embodiments of the present application, the connecting structure uses shear pins 200 and steel mesh 100 to complete the connection of UHPC and metal honeycomb 30. In terms of applicable scenarios, the connecting structure can connect UHPC and metal honeycomb 30 using different material panels 20 (aluminum alloy panels, carbon fiber panels or other composite material panels), avoiding the possibility of punch damage caused by direct connection (welding) of shear pins 200 and panels 20; the steel mesh 100 is located behind the panel 20 and closely adheres to it, limiting the development of cracks in the ultra-high performance concrete layer 10 after load failure, dispersing concentrated loads to the honeycomb units in the metal honeycomb 30, and fully utilizing the energy absorption effect of the UHPC-metal honeycomb composite structure; the processing technology of each component is simple, and the components can be produced in a factory, and the connection operation between the components is simple, which is convenient for engineering construction.

[0036] In one embodiment, one end of the shear pin 200 is welded and fixed with the steel mesh 100.

[0037] In another embodiment, as shown in Figures 1 to 2 , the steel mesh 100 is uniformly provided with vertically arranged connecting sleeves 101, and a plurality of through holes are arranged one by one corresponding to the plurality of connecting sleeves 101, and one end of the shear pin 200 is inserted into and fixedly connected with the connecting sleeve 101.

[0038] Specifically, the connecting sleeve 101 is provided with an internal thread, and one end of the shear pin 200 is screwed with the connecting sleeve 101.

[0039] In one specific embodiment, in combination with Figure 3 , the steel mesh 100 includes a plurality of horizontal reinforcement bars 110 and vertical reinforcement bars 120 arranged in a crisscross manner, the horizontal reinforcement bars 110 and the vertical reinforcement bars 120 are fixedly connected at the intersection, the horizontal reinforcement bars 110 and / or the vertical reinforcement bars 120 are connected in series by a plurality of steel reinforcement segments through a tee joint 130, and the unused end of the tee joint 130 forms the connecting sleeve 101.

[0040] Specifically, the tee joint 130 is in the shape of T, the two coaxial joints on the tee joint 130 are used to connect the steel reinforcement segments, and the remaining one joint is arranged vertically to form the connecting sleeve 101.

[0041] The tee joint 130 is used to connect the shear pin 200 and the steel mesh 100, the shear pin 200 is threadedly connected with the unused end of the tee joint 130, which is convenient for connection, and at the same time avoids the difficulty of welding the shear pin 200 and the steel mesh 100.

[0042] The intersection of the horizontal reinforcement bars 110 and the vertical reinforcement bars 120 in the steel mesh 100 can be fixed together by binding or welding.

[0043] In one embodiment, in combination with Figure 3As shown, the metal honeycomb 30 is provided with an embedding groove (not shown in the figure) for embedding the steel mesh 100 on the side close to the panel 20.

[0044] The embedding groove can be made by cutting, grinding or pre-pressing on the surface of the metal honeycomb 30. The embedding groove should not be too large to ensure that the metal honeycomb 30, the steel mesh 100 and the panel 20 are tightly attached after the metal honeycomb 30 is embedded in the steel mesh 100.

[0045] In a specific embodiment, the connection structure of the UHPC and the metal honeycomb 30 includes the following steps: Figures 1 to 3 As shown, the connection structure of the UHPC and the metal honeycomb 30 includes the following steps:

[0046] S1. Preparing the embedding groove on the surface of the metal honeycomb 30

[0047] The embedding groove for placing the steel mesh 100 is made by cutting, grinding or pre-pressing on the surface of the metal honeycomb 30. The embedding groove should be appropriate and not too large to ensure that the metal honeycomb 30, the steel mesh 100 and the panel 20 are tightly attached after the metal honeycomb 30 is embedded in the steel mesh 100.

[0048] S2. Making and placing the steel mesh 100

[0049] The steel bars are connected in series with the tee joint 130, and the tee joint 130 is fixed in position by welding or metal glue. After the tee joint 130 is fixed, the steel mesh 100 is formed by binding or welding the above-mentioned steel bars, and is embedded in the embedding groove on the surface of the metal honeycomb 30.

[0050] S3. Making the panel 20

[0051] The panel 20 is made with corresponding through holes according to the position and spacing of the shear pins 200 to ensure that the shear pins 200 are connected with the tee joint 130 later.

[0052] S4. Connecting the metal honeycomb 30 with the panel 20 and arranging the shear pins 200

[0053] The panel 20 and the metal honeycomb 30 are connected by welding or gluing to ensure that they are tightly connected. The shear pins 200 are arranged in the through holes on the panel 20 through the threaded tee joint 130.

[0054] S5. Pouring and curing the UHPC layer 10

[0055] A corresponding size mold is prepared, and the pouring of the UHPC layer 10 on the panel 20 is completed. The curing of the UHPC layer 10 is completed according to the relevant specifications.

[0056] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, as long as the combinations of technical features do not contradict each other, they shall be considered within the scope of the present disclosure.

[0057] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the scope of the application. It should be noted that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A connection structure between UHPC and metal honeycomb, characterized in that, The structure comprises, from top to bottom, an ultra-high performance concrete layer, a panel, and a metal honeycomb. The axial direction of the through holes on the metal honeycomb is perpendicular to the plane of the panel. The panel and the metal honeycomb are connected by welding or adhesive. A steel mesh is provided between the metal honeycomb and the panel. The panel has multiple through holes evenly distributed on it. Each through hole is fitted with a shear stud. One end of the shear stud is fixedly connected to the steel mesh, and the other end is cast into the ultra-high performance concrete layer.

2. The connection structure between UHPC and metal honeycomb according to claim 1, characterized in that, One end of the shear stud is welded and fixed to the steel mesh.

3. The connection structure between UHPC and metal honeycomb according to claim 1, characterized in that, Vertically arranged connecting sleeves are evenly distributed on the reinforcing mesh, and multiple through holes are respectively provided for multiple connecting sleeves. One end of the shear stud is fixedly connected to the connecting sleeve.

4. The connection structure between UHPC and metal honeycomb according to claim 3, characterized in that, The connecting sleeve has internal threads, and one end of the shear stud is screwed to the connecting sleeve.

5. The connection structure between UHPC and metal honeycomb according to claim 3, characterized in that, The steel mesh includes multiple horizontal and vertical bars arranged in a crisscross pattern. The intersections of the horizontal and vertical bars are fixedly connected. The horizontal bars and / or the vertical bars are formed by multiple steel bar segments connected in series through a tee joint. The unused end of the tee joint forms the connecting sleeve.

6. The connection structure between UHPC and metal honeycomb according to claim 5, characterized in that, The intersections of the transverse and longitudinal ribs are fixed by binding or welding.

7. The connection structure between UHPC and metal honeycomb according to claim 1, characterized in that, The metal honeycomb has a groove for embedding the steel mesh on the side near the panel.

8. The connection structure between UHPC and metal honeycomb according to claim 1, characterized in that, The panel is made of steel, aluminum alloy, carbon fiber, or composite materials.

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