Single-tube cross-brace and dumbbell arch rib connection device and method

Abstract

The application discloses a single-pipe cross brace and dumbbell-shaped arch rib connecting device and method, wherein the single-pipe cross brace and dumbbell-shaped arch rib connecting device is used for connecting a single-pipe cross brace and a dumbbell-shaped arch rib, the dumbbell-shaped arch rib comprises two circular pipes and two first webs, the two first webs are arranged in parallel and at intervals between the two circular pipes and are connected with the two circular pipes, and the single-pipe cross brace and dumbbell-shaped arch rib connecting device comprises a connecting plate, two second webs and a first reinforcing assembly, the connecting plate is arranged in parallel and at intervals with the first web and is used for connecting the single-pipe cross brace, the two second webs are arranged in parallel and at intervals between the first web and the connecting plate and are connected with the connecting plate, the first web and the circular pipe, and the first reinforcing assembly is connected with the connecting plate, the first web and the second web and is used for improving the connecting strength between the connecting plate, the first web and the second web. The application can solve the problem of high engineering cost caused by the deformation of a double-pipe connecting structure for resisting lateral force transmission in the prior art.

Description

Technical Field

[0001] This invention relates to the field of bridge construction engineering technology, and in particular to a single-tube cross brace and dumbbell-shaped arch rib connection device and method. Background Technology

[0002] The dumbbell-shaped steel-concrete composite arch ribs in steel-concrete composite arch bridges have many advantages, such as high compressive strength, economic and aesthetic appeal, and convenient construction.

[0003] For example, Chinese utility model patent application number CN201921071939.1, entitled "A Dumbbell-Shaped Steel-Pipe Concrete Arch Rib," describes a dumbbell-shaped steel-pipe concrete arch rib comprising two parallel horizontal steel pipes. At least two parallel vertical first web plates are provided between the two steel pipes. The number of first web plates depends on the diameter of the steel pipes. The upper and lower ends of each first web plate are connected to the two steel pipes, respectively. A cavity is formed between the two steel pipes and the two adjacent first web plates. Each cavity contains at least two parallel horizontal reinforcing ribs. The number of reinforcing ribs depends on the height of the cavity. Each reinforcing rib connects to the two side walls of the cavity. For novel dumbbell-shaped cross-sections where the cavity is not filled with concrete, a double-pipe connection structure should be used to resist deformation caused by lateral force transmission. However, the double-pipe connection structure not only increases the construction period but also increases the project cost.

[0004] Therefore, there is an urgent need for a single-tube horizontal brace and dumbbell-shaped arch rib connection device and method to solve the problem of high engineering cost caused by the use of double-tube connection structure to resist deformation when transmitting lateral force in the existing technology. Summary of the Invention

[0005] In view of this, it is necessary to provide a single-tube cross brace and dumbbell-shaped arch rib connection device and method to solve the technical problem of high engineering cost caused by the use of double-tube connection structure to resist deformation when transmitting lateral force in the prior art.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a single-tube cross brace and dumbbell-shaped arch rib connection device for connecting the single-tube cross brace and the dumbbell-shaped arch rib. The dumbbell-shaped arch rib includes two circular tubes and two first webs. The two first webs are parallel to each other and spaced apart between the two circular tubes, and are connected to both circular tubes.

[0007] A connecting plate, which is parallel to and spaced apart from the first web plate, is used to connect the single tube cross brace;

[0008] Two second web plates are arranged parallel to each other and spaced apart between the first web plate and the connecting plate, and are connected to the connecting plate, the first web plate and the round tube;

[0009] A first reinforcing assembly is connected to the connecting plate, the first web plate and the second web plate to improve the connection strength between the connecting plate, the first web plate and the second web plate.

[0010] Further, the first reinforcing assembly comprises a first reinforcing plate arranged between the two second web plates and connected to the connecting plate, the first web plate and the two second web plates.

[0011] Further, the first reinforcing assembly further comprises at least one second reinforcing plate arranged on the side of the second web plate away from the first reinforcing plate and connected to the connecting plate, the first web plate and the second web plate.

[0012] Further, the number of the second reinforcing plates in the first reinforcing assembly is two, and the two second reinforcing plates are symmetrically arranged on the two sides of the first reinforcing plate.

[0013] Further, the support assembly further comprises a second support plate arranged between the two first support plates and connected to the two first support plates and the two first web plates.

[0014] Further, the support assembly further comprises a second support plate arranged between the two first support plates and connected to the two first support plates and the two first web plates.

[0015] Further, the support assembly further comprises two third support plates symmetrically distributed on the two sides of the second support plate and arranged on the side of the first support plate away from the second support plate, and the third support plates are connected to the two first web plates and the first support plate.

[0016] Further, the second reinforcing assembly comprises at least one third reinforcing plate connected to the outer side wall of the single pipe cross brace and connected to the connecting plate.

[0017] Further, the number of the third reinforcing plates in the second reinforcing assembly is multiple, and the multiple third reinforcing plates are uniformly distributed along the circumference of the single pipe cross brace.

[0018] The technical scheme of the present application further provides a single pipe cross brace and dumbbell-shaped arch rib connecting method, comprising the single pipe cross brace and dumbbell-shaped arch rib connecting device as described above, comprising the following steps:

[0019] S1, determine the distance size, shape and size of the connecting plate from the first web plate, and prepare;

[0020] S2, shapes and sizes of the second web, the first reinforcing plate, the second reinforcing plate, the first support plate, the second support plate, the third support plate and the third reinforcing plate are determined in sequence;

[0021] S3, two second webs are welded on the circular pipe and the first web, and the first reinforcing plate and the second reinforcing plate are welded on the second web and the first web respectively;

[0022] S4, two first support plates are welded on the circular pipe and the first web, and the second support plate and the third support plate are welded on the first support plate and the first web respectively;

[0023] S5, the connecting plate is welded with the second web, the first reinforcing plate and the second reinforcing plate;

[0024] S6, a plurality of third reinforcing plates are welded on the single pipe cross brace, and the third reinforcing plate and the single pipe cross brace are welded on the connecting plate.

[0025] Compared with the prior art, the beneficial effects of the present application include: the connecting plate and the first web of the dumbbell-shaped arch rib are parallel and spaced apart, used for connecting the single pipe cross brace, and the single pipe cross brace is arranged perpendicular to the first web, the second webs are parallel and spaced apart between the first web and the connecting plate, and are connected with the connecting plate, the first web and the circular pipe, the first reinforcing assembly is connected with the connecting plate, the first web and the second web, used for improving the connection strength between the connecting plate, the first web and the second web. Compared with the prior art, the single pipe cross brace is connected to the dumbbell-shaped arch rib through the connecting structure of the connecting plate, the two second webs and the first reinforcing assembly, instead of the double pipe connecting structure in the prior art, to meet the strength requirement of construction, and at the same time, the connecting structure of the connecting plate, the two second webs and the first reinforcing assembly saves and reduces the engineering supply, and can solve the technical problem of high engineering cost caused by the deformation when resisting lateral force transmission in the prior art by adopting the double pipe connecting structure. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of a single pipe cross brace and a dumbbell-shaped arch rib connecting device provided by an embodiment of the present application;

[0027] Figure 2 is a front view structural schematic diagram of a single pipe cross brace and a dumbbell-shaped arch rib connecting device provided by an embodiment of the present application;

[0028] Figure 3 is a top view structural schematic diagram of a single pipe cross brace and a dumbbell-shaped arch rib connecting device provided by an embodiment of the present application;

[0029] Figure 4 is a left view structural schematic diagram of a single pipe cross brace and a dumbbell-shaped arch rib connecting device provided by an embodiment of the present application;

[0030] Figure 5 This is a three-dimensional structural diagram of the connection between the first web, the circular tube, the first support plate, the second support plate, and the third support plate provided in the embodiment of the present invention. Detailed Implementation

[0031] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0032] Please see Figures 1 to 3 This invention provides a connecting device for a single-tube cross brace 1 and a dumbbell-shaped arch rib 2, used to connect the single-tube cross brace 1 and the dumbbell-shaped arch rib 2. The dumbbell-shaped arch rib 2 includes two circular tubes 21 and two first web plates 22. The two first web plates 22 are parallel to each other and spaced apart between the two circular tubes 21, and are connected to both circular tubes 21. The device includes a connecting plate 3, two second web plates 4, and a first reinforcing component 5. The connecting plate 3 is parallel to each other and spaced apart from the first web plates 22, and is used to connect the single-tube cross brace 1. The two second web plates 4 are parallel to each other and spaced apart between the first web plates 22 and the connecting plate 3, and are connected to the connecting plate 3, the first web plates 22, and the circular tubes 21. The first reinforcing component 5 is connected to the connecting plate 3, the first web plates 22, and the second web plates 4, and is used to improve the connection strength between the connecting plate 3, the first web plates 22, and the second web plates 4.

[0033] In this device, the connecting plate 3 and the first web plate 22 of the dumbbell-shaped arch rib 2 are parallel to each other and spaced apart, used to connect the single tube cross brace 1, and the single tube cross brace 1 is set perpendicular to the first web plate 22. The second web plate 4 is parallel to each other and spaced apart between the first web plate 22 and the connecting plate 3, and is connected to the connecting plate 3, the first web plate 22 and the round tube 21. The first reinforcing component 5 is connected to the connecting plate 3, the first web plate 22 and the second web plate 4, and is used to improve the connection strength between the connecting plate 3, the first web plate 22 and the second web plate 4.

[0034] Compared with existing technologies, the connection structure of connecting plate 3, two second web plates 4 and first reinforcing component 5 connects the single tube cross brace 1 to the dumbbell-shaped arch rib 2, replacing the double tube connection structure in existing technologies to meet the strength requirements of construction. At the same time, the connection plate 3, two second web plates 4 and first reinforcing component 5 save and reduce the engineering material supply, and can solve the technical problem of high engineering cost caused by the use of double tube connection structure to resist deformation when transverse force transmission in existing technologies.

[0035] It can be understood that the dumbbell-shaped arch rib 2 comprises two circular tubes 21, two first webs 22, and concrete 23 filled in the circular tubes 21, the two circular tubes 21 are arranged in parallel and spaced apart, the two first webs 22 are arranged in parallel and spaced apart between the two circular tubes 21 and connected with the two circular tubes 21, and the concrete 23 is filled in the circular tubes 21 and forms a dumbbell-shaped arch rib structure. For reference, please refer to the third edition of Steel Tube Concrete Arch Bridge by Chen Baichun, which is a conventional arrangement known in the art and will not be described in detail. The single-pipe cross brace 1 is a single circular tube 21 structure, which can be circular, square, or polygonal in cross section. The single-pipe cross brace 1 is arranged perpendicular to the first web 22 and connected to the dumbbell-shaped arch rib 2. In the device, the connection structure of the connecting plate 3, the second web 4, and the first reinforcing assembly 5 replaces the traditional double-pipe connection structure to resist deformation caused by lateral force transmission and save engineering cost. The single-pipe cross brace 1 and the dumbbell-shaped arch rib 2 are commonly used and easy to purchase in the market, which are conventional arrangements known to those skilled in the art and will not be described in detail.

[0036] As shown in Figure 3 , the first reinforcing assembly 5 comprises a first reinforcing plate 51 and at least one second reinforcing plate 52.

[0037] The first reinforcing plate 51 is arranged between the two second webs 4 and connected with the connecting plate 3, the first web 22, and the two second webs 4.

[0038] The first reinforcing plate 51 is connected to the connecting plate 3, the first web 22, and the two second webs 4 to increase the connection strength of the connecting plate 3, the first web 22, and the two second webs 4.

[0039] As an embodiment, as shown in Figure 1 , Figure 2 , and Figure 4 , the second reinforcing plate 52 is arranged on the side of the second web 4 away from the first reinforcing plate 51 and connected with the connecting plate 3, the first web 22, and the second web 4.

[0040] The second reinforcing plate 52 is connected to the connecting plate 3, the first web 22, and the two second webs 4 to further increase the connection strength of the connecting plate 3, the first web 22, and the two second webs 4.

[0041] As a preferred embodiment, as shown in Figure 4 , the number of second reinforcing plates 52 in the first reinforcing assembly 5 is two, and the two second reinforcing plates 52 are symmetrically arranged on both sides of the first reinforcing plate 51.

[0042] Two second reinforcing plates 52 are connected with two second webs 4 respectively, so that the connection of the connecting plate 3 and the first web 22 and the two second webs 4 is more stable and firm.

[0043] As shown in Figure 5 , the device further comprises a support assembly 6, and the support assembly 6 comprises two first support plates 61, a second support plate 62 and two third support plates 63.

[0044] Among them, the two first support plates 61 are arranged in parallel and spaced apart between the two first webs 22, and the first support plate 61 is connected with the two first webs 22 and the two circular pipes 21.

[0045] The two first support plates 61 are arranged in parallel and spaced apart, which is used to increase the connection strength between the two first webs 22.

[0046] Among them, as an embodiment, as shown in Figure 5 , the second support plate 62 is arranged between the two first support plates 61 and connected with the two first support plates 61 and the two first webs 22.

[0047] The second support plate 62 is connected with the two first support plates 61 and the two first webs 22, which is used to increase the strength and stability of the connection structure.

[0048] Among them, as another embodiment, as shown in Figure 5 , the two third support plates 63 are symmetrically distributed on both sides of the second support plate 62, and are arranged on the side of the first support plate 61 away from the second support plate 62, and the third support plate 63 is connected with the two first webs 22 and the first support plate 61.

[0049] The third support plate 63 is connected with the first web 22 and the first support plate 61, which is used to further improve the stability and strength of the connection structure.

[0050] As shown in Figures 1 to 4 , the device further comprises a second reinforcing assembly 7, and the second reinforcing assembly 7 comprises at least one third reinforcing plate, and the third reinforcing plate is connected with the outer side wall of the single pipe cross brace 1 and connected with the connecting plate 3.

[0051] The second reinforcing assembly 7 is connected with the single pipe cross brace 1 and the connecting plate 3, which is used to increase the connection strength between the single pipe cross brace 1 and the connecting plate 3.

[0052] Among them, as an embodiment, as shown in Figures 1 to 4 , the number of third reinforcing plates in the second reinforcing assembly 7 is multiple, and the multiple third reinforcing plates are uniformly distributed along the circumference of the single pipe cross brace 1.

[0053] Multiple third reinforcing plates are evenly distributed on the circumferential outer wall of the single tube cross brace 1 to make the connection between the single tube cross brace 1 and the connecting plate 3 more stable, so as to make the connection strength of the connection structure higher.

[0054] The present invention also provides a method for connecting a single tube cross brace 1 and a dumbbell-shaped arch rib 2, including the connection device for the single tube cross brace 1 and the dumbbell-shaped arch rib 2 as described above, comprising the following steps:

[0055] S1. Determine the distance, shape, and size of the connecting plate 3 from the first web plate 22, and prepare it accordingly;

[0056] S2. Sequentially determine the shape and size of the second web plate 4, the first reinforcing plate 51, the second reinforcing plate 52, the first support plate 61, the second support plate 62, the third support plate 63, and the third reinforcing plate;

[0057] S3. Weld the two second web plates 4 to the round tube 21 and the first web plate 22, and weld the first reinforcing plate 51 and the second reinforcing plate 52 to the second web plate 4 and the first web plate 22 respectively.

[0058] S4. Weld the two first support plates 61 to the round tube 21 and the first web plate 22, and weld the second support plate 62 and the third support plate 63 to the first support plate 61 and the first web plate 22 respectively.

[0059] S5. Weld the connecting plate 3 to the second web plate 4, the first reinforcing plate 51 and the second reinforcing plate 52.

[0060] S6. Weld multiple third reinforcing plates onto the single-tube cross brace 1, and weld the third reinforcing plates and the single-tube cross brace 1 onto the connecting plate 3.

[0061] Specifically, in this device, the distance from the left top surface to the center line of the arch rib is 0.9 to 1.0D1 to ensure reasonable force transmission of the second web plate 4 and to ensure welding space for the second reinforcing plate 52. The connecting plate 3 is square, and the side length of the square connecting plate is denoted as L. L is selected as 1.5 to 1.6D2 to meet the force and welding requirements of the third reinforcing plate, where D1 is the outer diameter of the circular tube 21 and D2 is the outer diameter of the single tube cross brace 1. Specifically, the distance between the two second web plates 4 in this device is 0.8D2.

[0062] Furthermore, such as Figure 2 As shown, the second web 4 is a trapezoid with rounded corners. The side length of the short side of the trapezoid is L-2△, and the value of △ is in the range of 10 to 50 mm. The second web 4 forms the intersection point 41 of the line connecting the endpoint 42 of the short side of the trapezoid, the center 24 of the circular tube, and the outer wall of the circular tube. In this device, the shape and size of the second web 4 are determined by the intersection of the endpoint 42 of the short side of the trapezoid, the intersection point 41, and the line of intersection between the second web 4 and the dumbbell-shaped arch rib 2.

[0063] Further, the third reinforcing plate can be arranged at the outer side of the single-pipe cross brace 1 at equal intervals.

[0064] Further, the center of the first reinforcing plate 51 coincides with the center line of the single-pipe cross brace 1 and is parallel to the arch axis of the concrete-filled steel tube arch rib, and the second reinforcing plate 52 is arranged in the same plane as the first reinforcing plate.

[0065] Further, in the device, the single-pipe cross brace, the connecting plate 3, the third reinforcing plate, the second web plate 4, the first reinforcing plate 51, the second reinforcing plate 52, the first support plate 61, the second support plate 62, and the third support plate 63, and the circular tube 21 and the first web plate 22 of the dumbbell-shaped arch rib 2 are all welded by welding seams, which can be one or more of fillet welds or fusion welds.

[0066] The specific working process of the present application is as follows: the connecting plate 3 and the first web plate 22 of the dumbbell-shaped arch rib 2 are arranged in parallel and at intervals, used to connect the single-pipe cross brace 1 and make the single-pipe cross brace 1 perpendicular to the first web plate 22, the second web plate 4 is arranged in parallel and at intervals between the first web plate 22 and the connecting plate 3 and is connected with the connecting plate 3, the first web plate 22, and the circular tube 21, the first reinforcing assembly 5 is connected with the connecting plate 3, the first web plate 22, and the second web plate 4, used to improve the connection strength between the connecting plate 3, the first web plate 22, and the second web plate 4. Compared with the prior art, the single-pipe cross brace 1 is connected to the dumbbell-shaped arch rib 2 through the connecting structure of the connecting plate 3, the two second web plates 4, and the first reinforcing assembly 5, instead of the double-pipe connecting structure in the prior art, to meet the strength requirements of construction, while saving and reducing the engineering supply through the connecting structure of the connecting plate 3, the two second web plates 4, and the first reinforcing assembly 5.

[0067] Further, the single-pipe cross brace 1 can be reliably connected with the concrete-filled steel tube of the arch rib and the first web plate 22 without being limited by its own size through the connecting structure of the device, which avoids large deformation of the first web plate 22 and discontinuous intersecting line weld connections between the single-pipe cross brace 1 and the first web plate 22, eliminates local stress concentration problems, ensures the connection quality, and improves the durability of the joint structure.

[0068] The device can solve the technical problem of high engineering cost caused by deformation when resisting lateral force transmission through the double-pipe connecting structure in the prior art through the above structure.

[0069] The above description is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed by the present application can be easily thought of by those skilled in the art and should be covered within the protection scope of the present application.

Claims

1. A single-pipe cross-brace and dumbbell-shaped arch-rib connecting device for connecting a single-pipe cross-brace and a dumbbell-shaped arch-rib, the dumbbell-shaped arch-rib comprising two circular pipes and two first webs, the two first webs being parallel to each other and arranged at intervals between the two circular pipes and connected to the two circular pipes, characterized in that, Comprise: a connecting plate, which is parallel and spaced apart from the first web, for connecting the single-pipe cross brace; two second webs, which are parallel and spaced apart from each other between the first web and the connecting plate, and are connected with the connecting plate, the first web and the circular pipe; a first reinforcing assembly, which is connected with the connecting plate, the first web and the second web, for improving the connection strength between the connecting plate, the first web and the second web; wherein the first reinforcing assembly comprises a first reinforcing plate, which is arranged between the two second webs and is connected with the connecting plate, the first web and the two second webs; wherein the first reinforcing assembly further comprises at least one second reinforcing plate, which is arranged on the side of the second web away from the first reinforcing plate and is connected with the connecting plate, the first web and the second web; a support assembly, which comprises two first support plates, which are parallel and spaced apart from each other between the two first webs, and are connected with the two first webs and the two circular pipes; a second reinforcing assembly, which comprises at least one third reinforcing plate, which is connected to the outer side wall of the single-pipe cross brace and is connected to the connecting plate; wherein the support assembly further comprises a second support plate, which is arranged between the two first support plates and is connected with the two first support plates and the two first webs; wherein the support assembly further comprises two third support plates, which are symmetrically distributed on both sides of the second support plate and are arranged on the side of the first support plate away from the second support plate, and the third support plates are connected with the two first webs and the first support plate.

2. The single tube cross strut and dumbbell shaped arch rib connection apparatus of claim 1, wherein, The number of second reinforcing plates in the first reinforcing assembly is two, and the two second reinforcing plates are symmetrically arranged on both sides of the first reinforcing plate.

3. The single tube cross strut and dumbbell shaped arch rib connection apparatus of claim 2, wherein, The number of third reinforcing plates in the second reinforcing assembly is multiple, and the multiple third reinforcing plates are uniformly distributed along the circumference of the single-pipe cross brace.

4. A method of connecting a single-tube cross-brace to a dumbbell-shaped arch rib, the method comprising: The single-pipe cross brace and dumbbell-shaped arch rib connecting device comprises the steps of: S1, determining the distance size, shape and size of the connecting plate from the first web, and preparing; S2, sequentially determining the shape and size of the second web, the first reinforcing plate, the second reinforcing plate, the first support plate, the second support plate, the third support plate and the third reinforcing plate; S3, welding the two second webs on the circular pipe and the first web, and welding the first reinforcing plate and the second reinforcing plate on the second web and the first web, respectively; S4, welding the two first support plates on the circular pipe and the first web, and welding the second support plate and the third support plate on the first support plate and the first web, respectively; S5, welding the connecting plate with the second web, the first reinforcing plate and the second reinforcing plate; S6, welding multiple third reinforcing plates on the single-pipe cross brace, and welding the third reinforcing plate and the single-pipe cross brace on the connecting plate.

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