Arch rib closure device, bridge arch rib and steel pipe arch bridge

Abstract

The application relates to the technical field of bridge engineering, and provides an arch rib closure device, a bridge arch rib and a steel pipe arch bridge, which comprise a first chord pipe, a second chord pipe and a sleeve pipe, the sleeve pipe is connected between the first chord pipe and the second chord pipe, the sleeve pipe is provided with a first connecting piece and a second connecting piece which are connected through bolts, the first connecting piece is connected with the first chord pipe through a first rib plate, the second connecting piece is connected with the second chord pipe through a second rib plate, and one end of the first chord pipe corresponding to the sleeve pipe or one end of the second chord pipe corresponding to the sleeve pipe is closed; the bolt connection can not only facilitate construction but also quickly complete closure operation, the stability of connection is improved, and the safety risk of long-time high-altitude operation is reduced; in addition, the closed setting of one end of the first chord pipe or the second chord pipe used for connection with the sleeve pipe can improve the filling quality of concrete when the concrete is filled into the main arch pipe composed of the first chord pipe, the second chord pipe and the sleeve pipe after closure.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, and in particular to an arch rib closure device, a bridge arch rib, and a steel pipe arch bridge. Background Technology

[0002] There are two main ways to close the main arch bridge of steel-concrete composite structure: the first is to connect it with turnbuckle nuts, and the second is to connect it by welding steel strips inside the chord tubes on both sides.

[0003] The turnbuckle connection involves attaching turnbuckles to the ends of the left and right chords, and then screwing turnbuckles into the turnbuckles on both sides. By rotating the turnbuckles, the two turnbuckles move closer or further apart, thus completing the connection between the left and right chords. However, this method has the problem of large nut diameters, lack of matching tightening equipment, and the difficulty of manual operation, which is time-consuming and laborious. Furthermore, when the machining precision of the screws and nuts is low, they are prone to jamming, preventing rotation and making length adjustment impossible.

[0004] The problem with the steel strip connection inside the chord tube is that the steel strips cannot be welded inside the chord tube in advance, otherwise it will affect the installation of the arch rib segments. Welding can only be carried out after the last segment is hoisted into place and the temperature is stable. However, the closure of the main arch ring is usually carried out at night when the temperature is stable. The period of relatively stable temperature is not long, and the quality of welding at high altitude at night is not easy to guarantee, the risk factor is high, and the deformation caused by welding is not easy to correct. Summary of the Invention

[0005] This invention provides an arch rib closure device, a bridge arch rib, and a steel pipe arch bridge to solve the defects of complex operation and low efficiency in the arch rib closure of steel pipe arch bridges in the prior art.

[0006] This invention provides an arch rib closure device, comprising:

[0007] A first chord, a second chord, and a sleeve are provided. The sleeve is connected between the first chord and the second chord. The sleeve is provided with a first connector and a second connector connected by bolts. The first connector is connected to the first chord through a first rib, and the second connector is connected to the second chord through a second rib. The first chord is closed at one end corresponding to the sleeve, or the second chord is closed at one end corresponding to the sleeve.

[0008] According to the arch rib closure device provided by the present invention, the first end of the first rib is connected to the inner wall of the first chord tube, the second end of the first rib is connected to a first partition, and the first connector is connected to the first partition; the first end of the second rib is connected to the inner wall of the second chord tube, the second end of the second rib is connected to a second partition, and the second connector is connected to the second partition; wherein, the cross-section of the first partition is the same as the cross-section of the first chord tube, and it is used to close the port of the first chord tube; or, the cross-section of the second partition is the same as the cross-section of the second chord tube, and it is used to close the port of the second chord tube.

[0009] The arch rib closure device provided by the present invention further includes a transition connector, which is disposed between the first connector and the second connector, and is respectively connected to the first connector and the second connector by bolts.

[0010] According to the arch rib closure device provided by the present invention, the first connecting member and the second connecting member are respectively provided with a plurality of through holes, and the transition connecting member is uniformly provided with a plurality of bolt holes, and the through holes and the bolt holes are connected by bolts.

[0011] According to the arch rib closure device provided by the present invention, a plurality of first connecting members are provided, and the plurality of first connecting members are uniformly connected to the first partition plate around the central axis of the sleeve; the number of transition connecting members and the second connecting members are the same as the number of first connecting members and correspond one-to-one, and the plurality of first connecting members are uniformly connected to the first partition plate around the central axis of the sleeve.

[0012] According to the arch rib closure device provided by the present invention, multiple first ribs are provided, and the multiple first ribs are uniformly connected in the first chord tube along the circumferential direction, and the second end of each first rib is connected to the first partition plate.

[0013] Multiple second ribs are provided, and the multiple second ribs are evenly connected in the second chord tube along the circumferential direction. The second end of each second rib is connected to the second partition.

[0014] According to the arch rib closure device provided by the present invention, a first inner liner tube is provided on the side of the first partition plate away from the first connector, and the outer wall of the first inner liner tube is connected to each of the first rib plates.

[0015] The second partition plate has a second inner liner tube on the side opposite to the second connector, and the outer wall of the second inner liner tube is connected to each of the second ribs.

[0016] According to the arch rib closure device provided by the present invention, the first connecting member is an I-shaped plate, the second connecting member is an I-shaped plate, and the transition connecting member is connected to the outer wall of the first connecting member and the second connecting member respectively.

[0017] In a second aspect, the present invention provides a bridge arch rib, including an arch rib closure device as described in the first aspect.

[0018] Thirdly, the present invention also provides a steel pipe arch bridge, including the bridge arch ribs as described in the second aspect.

[0019] This invention provides an arch rib closure device, a bridge arch rib, and a steel pipe arch bridge, comprising a first chord, a second chord, and a sleeve. The sleeve connects the first and second chords. A first connector and a second connector, bolted together, are installed inside the sleeve. This arrangement allows for the instantaneous closure of the steel pipe arch bridge by bolting together the first connector located outside the first chord's port and the second connector located outside the second chord's port. The connection is then covered by the sleeve, and both ends of the sleeve are connected to the first and second chords respectively. This closure device avoids on-site welding procedures and the slow construction caused by the influence of ambient temperature on welding quality. Bolted connections not only facilitate construction but also enable rapid closure operations, improving connection stability and ensuring high closure precision, while reducing the safety risks associated with prolonged high-altitude operations. Furthermore, by using a closed configuration at one end of the first or second chord tube for connection with the sleeve, when concrete is filled into the main arch tube composed of the first chord tube, second chord tube, and sleeve after closure, the partially closed closure zone allows laitance to drain from both sides, and the concrete can fill every area within the main arch tube. Compared to traditional internally connected main arch tube structures, this avoids the problems of laitance entering from one side and being difficult to drain due to impact, as well as inadequate concrete filling in the high central areas of the main arch tube, which can occur when concrete is filled at both ends of the main arch tube. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the internal structure of the arch rib closure device provided in an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional view of the sleeve along the AA direction provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the arc-shaped plate connection provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection between the first connector and the first partition provided in an embodiment of the present invention;

[0025] Figure 5 This is a cross-sectional view of the first rib in the first chord tube provided in an embodiment of the present invention.

[0026] Figure label:

[0027] 1. First chord tube; 11. First connector; 12. First rib; 13. First partition; 14. First inner liner tube;

[0028] 2. Second chord tube; 21. Second connector; 22. Second rib; 23. Second partition; 24. Second inner liner tube;

[0029] 3. Sleeve; 31. Curved plate; 32. Gasket;

[0030] 4. Transition connectors. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0032] The following is combined with Figures 1 to 5 This invention describes an arch rib closure device, a bridge arch rib, and a steel pipe arch bridge provided in embodiments of the present invention.

[0033] This embodiment provides an arch rib closure device, including: a first chord tube 1, a second chord tube 2, and a sleeve 3. The sleeve 3 is connected between the first chord tube 1 and the second chord tube 2. The sleeve 3 is provided with a first connector 11 and a second connector 21 connected by bolts. The first connector 11 is connected to the first chord tube 1 through a first rib plate 12, and the second connector 21 is connected to the second chord tube 2 through a second rib plate 22. The first chord tube 1 is closed at one end corresponding to the sleeve 3, or the second chord tube 2 is closed at one end corresponding to the sleeve 3.

[0034] As can be seen from the above solution, compared with the prior art, the present invention, during construction, by...

[0035] The first connector 11, located outside the port of the first chord 1, and the second connector 21, located outside the port of the second chord 2, are connected by bolts. Then, the length of the sleeve 3 is determined based on the actual distance between the ports of the first chord 1 and the second chord 2 after connection. The sleeve 3 covers the connection point, and both ends of the sleeve 3 are connected to the first chord 1 and the second chord 2 respectively, completing the instantaneous closure construction of the steel pipe arch bridge. This closure device avoids on-site welding procedures and the slow construction caused by the influence of ambient temperature on welding quality. The bolted connection not only facilitates construction but also allows for rapid closure, improving connection stability and ensuring high closure precision. This also reduces the safety risks of long-term high-altitude operations. In addition, by using the first chord tube 1 or the second chord tube 2 to close one end connected to the sleeve 3, the internal space of the main arch tube composed of the first chord tube 1, the second chord tube 2 and the sleeve 3 can be divided into two parts after the closure is completed. Thus, when concrete is filled into the main arch tube at both ends of the bottom of the main arch tube, the slurry can be discharged from both sides due to the partial closure of the closure area, and the concrete can fill every area inside the main arch tube. Compared with the traditional internally connected main arch tube structure, this avoids the problem of slurry entering from one side and being difficult to discharge due to impact when concrete is filled at both ends of the main arch tube, as well as the problem of insufficient concrete filling in the middle and high positions of the main arch tube.

[0036] Optionally, the first connector 11 and the second connector 21 described above can also be connected by grooved rivets, or by using both high-strength bolts and grooved rivets.

[0037] Reference Figure 2 In this embodiment, to facilitate construction, the sleeve 3 is longitudinally divided into two arc-shaped plates 31. The two arc-shaped plates 31 are two identical parts, that is, the cross-section of the two arc-shaped plates 31 is semi-circular. After the first connecting piece 11 and the second connecting piece 21 are connected by bolts or ring groove rivets, the two arc-shaped plates 31 are covered from the outside and assembled into a circular tube structure. Then, the two ends of the assembled sleeve 3 are respectively connected to the first chord tube 1 and the second chord tube 2 at both ends by welding.

[0038] Furthermore, the two sides of each arc-shaped plate 31 are configured as arc surfaces or bevels, so that when two arc-shaped plates 31 are joined, an area for accommodating solder can be formed at the joint, such as... Figure 3As shown, the inclined surfaces of the two arc-shaped plates 31 form a triangular or trapezoidal area at the connection point. Preferably, the area for accommodating the solder is trapezoidal. That is, a certain gap is left between the sides of the two arc-shaped plates 31 when they are connected. A pad 32 is provided on the inner wall of the two arc-shaped plates 31 at the corresponding connection point. The pad 32 and the inclined surfaces of the two arc-shaped plates 31 form the area for accommodating the solder. Moreover, the pad 32 can prevent the molten solder from falling into the sleeve 3 during the welding process and damaging the internal structure.

[0039] Reference Figure 1 In a specific embodiment of the present invention, the first end of the first rib 12 is connected to the inner wall of the first chord tube 1, the second end of the first rib 12 is connected to the first partition 13, and the first connector 11 is connected to the first partition 13; the first end of the second rib 22 is connected to the inner wall of the second chord tube 2, the second end of the second rib 22 is connected to the second partition 23, and the second connector 21 is connected to the second partition 23; wherein, the cross-section of the first partition 13 is the same as the cross-section of the first chord tube 1, and is used to close the port of the first chord tube 1; or, the cross-section of the second partition 23 is the same as the cross-section of the second chord tube 2, and is used to close the port of the second chord tube 2.

[0040] With this configuration, the first partition 13 is connected to the inner wall of the first chord tube 1 by the first rib 12, and the second partition 23 is connected to the inner wall of the second chord tube 2 by the second rib 22. This allows the first connector 11 to be connected to the first partition 13, thus connecting the first connector 11 to the first chord tube 1, and the second connector 21 to be connected to the second partition 23, thus connecting the second connector 21 to the second chord tube 2. This facilitates the connection of the first chord tube 1 and the second chord tube 2, and then the first connector 11 and the second chord tube 2 are connected from the outside via the sleeve 3. The second connector 21 is installed and then connected to the first chord tube 1 and the second chord tube 2 to quickly complete the closure construction. By designing the first partition 13 to close the port of the first chord tube 1, or the second partition 23 to close the second chord tube 2, while ensuring the completion of the instantaneous closure construction, the internal space of the main arch tube after the closure construction is also divided into two parts. When concrete is filled from both ends of the bottom of the main arch tube, the filling length and filling space of the concrete at each end are shortened, which is conducive to the uniform filling inside the main arch tube and improves the construction quality of filling the concrete into the main arch tube.

[0041] Optionally, such as Figure 1 As shown, the first rib 12 is inclinedly connected to the inner wall of the first chord tube 1, so that the second end of the first rib 12 is connected to the inner side of the first partition 13.

[0042] In a further embodiment, a transition connector 4 is also included. The transition connector 4 is disposed between the first connector 11 and the second connector 21, and is connected to the first connector 11 and the second connector 21 respectively by bolts or grooved rivets. This arrangement, by using the transition connector 4, can compensate for installation length errors between the first connector 11 and the second connector 21, and can adjust the distance between the first chord tube 1 and the second chord tube 2, ensuring closure accuracy.

[0043] Specifically, the first connector 11 and the second connector 21 are respectively provided with a number of through holes, and the transition connector 4 is provided with a number of bolt holes evenly distributed. The through holes and bolt holes are connected by bolts or ring groove rivets.

[0044] Optionally, the first connector 11 can be a rectangular frame or a regular polygonal frame. One open end of the first connector 11 is connected to the first partition 13, and the center of the first partition 13 coincides with the central axis of the first connector 11. Each straight surface of the first connector 11 is provided with several through holes. The second connector 21 has the same structural dimensions as the first connector 11. One open end of the second connector 21 is connected to the second partition 23, and the center of the second partition 23 coincides with the central axis of the second connector 21. The transition connector 4 is a straight plate, and the corresponding right-angled surfaces of the first connector 11 and the second connector 21 are connected by the transition connector 4.

[0045] Furthermore, multiple first connectors 11 are provided, and these multiple first connectors 11 are evenly connected to the first partition 13 around the central axis of the sleeve 3; the transition connectors 4 and second connectors 21 are the same number as the first connectors 11 and correspond one-to-one, with the multiple first connectors 11 evenly connected to the first partition 13 around the central axis of the sleeve 3. For example, as Figure 4 As shown, the first connecting member 11, the first connecting member 11, and the transition connecting member 4 are all plate-shaped structures. The first connecting members 11 are configured as a pair, and the pair of first connecting members 11 are vertically and symmetrically connected to the first partition plate 13. The second connecting members 21 are also a pair, and the pair of second connecting members 21 are vertically and symmetrically connected to the second partition plate 23. By aligning the first connecting members 11 and the second connecting members 21, the transition connecting member 4 is connected to the outer side of the first connecting members 11 and the second connecting members 21 respectively by bolts or ring groove rivets. Of course, there can also be three, four, five or more first connecting members 11, all of which are evenly distributed on the first partition plate 13 along the central axis of the sleeve 3 in the circumferential direction.

[0046] like Figure 4As shown, both the first connector 11 and the second connector 21 are I-shaped plates, including a first horizontal plate, a vertical plate, and a second horizontal plate. Compared with a straight plate, the I-shaped plate improves the rigidity and strength of its structure. The two ends of the transition connector 4 are connected to the outer sides of the vertical plate of the first connector 11 and the vertical plate of the second connector 21, respectively. The first horizontal plate and the second horizontal plate can be constrained from above and below the transition connector 4 to improve the anti-torque effect and improve the reliability of the connection.

[0047] In this embodiment, multiple first ribs 12 are provided, and the multiple first ribs 12 are evenly connected in the first chord tube 1 along the circumferential direction. The second end of each first rib 12 is connected to the first partition 13. Multiple second ribs 22 are provided, and the multiple second ribs 22 are evenly connected in the second chord tube 2 along the circumferential direction. The second end of each second rib 22 is connected to the second partition 23. Figure 5 As shown, at least two first ribs 12 are provided and evenly distributed in the first chord tube 1. Since the ribs are connected to the inner wall of the first chord tube 1, the strength of the connection at the end of the first chord tube 1 can be improved. By providing multiple first ribs 12, the reliability of the connection between the first chord tube 1 and the first partition 13 is improved. The second rib 22 is provided in the same way as the first ribs 12, and thus has the same advantages.

[0048] Furthermore, a first inner liner 14 is provided on the side of the first partition 13 opposite to the first connector 11, and the outer wall of the first inner liner 14 is connected to each first rib 12; as Figure 1 As shown, the first rib 12 is obliquely connected between the first partition 13 and the first chord tube 1. By providing a first inner liner tube 14 inside the first partition 13, the second end of the first rib 12 can be connected to both the first partition 13 and the first inner liner tube 14, so that the first inner liner tube 14 provides radial support to the first rib 12, improving the connection reliability of the first rib 12 and also improving the connection strength between the first connector 11 and the second connector 21. The second partition 23 is provided with a second inner liner tube 24 on the side away from the second connector 21. The outer wall of the second inner liner tube 24 is connected to each second rib 22. The beneficial effects produced by the second inner liner tube 24 are the same as those of the first inner liner tube 14, and will not be described again.

[0049] Preferably, the first inner liner tube 14 is located at the center of the first partition 13, and the second inner liner tube 24 is also located at the center of the second partition 23, so that the force is evenly distributed and the connection strength is improved.

[0050] The construction process of the arch rib closure device provided by the present invention is as follows: the first rib plate 12 is pre-welded to the inner wall of the first chord tube 1, and then the first inner lining tube 14, the first partition plate 13 and the first connector 11 are connected in sequence; the second rib plate 22 is pre-welded to the inner wall of the second chord tube 2, and then the second inner lining tube 24, the second partition plate 23 and the second connector 21 are connected in sequence, and the first chord tube 1 port is closed by the first partition plate 13 or the second chord tube 2 port is closed by the second partition plate 23; after the installation of the left and right main arch segments is completed, the transition connector 4 is connected to the first connector 11 and the second connector 21 respectively by high-strength bolts or ring groove rivets, and then the two arc plates 31 are assembled into a sleeve 3 from the outside. The two ends of the sleeve 3 are connected to the first chord tube 1 and the second chord tube 2 at both ends to complete the instantaneous closure, which solves the problems of complex construction operation, long closure operation time, low safety factor and low closure accuracy of the existing steel pipe arch bridge closure.

[0051] This invention also provides a bridge arch rib and a steel pipe arch bridge, including the aforementioned closure structure. Because the bridge arch rib and steel pipe arch bridge utilize the aforementioned arch rib closure device, the instantaneous closure construction of the steel pipe arch bridge can be completed in a time-saving and labor-saving manner, reducing the safety risks of long-term high-altitude operations, and possessing the advantages of reliable structure and simple operation.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An arch rib closure device, characterized in that, include: A first chord tube (1), a second chord tube (2), and a sleeve (3) are provided inside the sleeve (3). The sleeve (3) is connected between the first chord tube (1) and the second chord tube (2). A first connector (11) and a second connector (21) are connected by bolts inside the sleeve (3). The first connector (11) is connected to the first chord tube (1) through a first rib (12). The second connector (21) is connected to the second chord tube (2) through a second rib (22). The first chord tube (1) is closed at one end of the sleeve (3) or the second chord tube (2) is closed at one end of the sleeve (3). The first end of the first rib (12) is connected to the inner wall of the first string tube (1), and the second end of the first rib (12) is connected to the first partition (13). The first connector (11) is connected to the first partition (13). The first end of the second rib (22) is connected to the inner wall of the second string tube (2), and the second end of the second rib (22) is connected to the second partition (23). The second connector (21) is connected to the second partition (23). The first partition (13) has the same cross-section as the first string tube (1) and is used to close the port of the first string tube (1). Alternatively, the second partition (23) has the same cross-section as the second string tube (2) and is used to close the port of the second string tube (2). It also includes a transition connector (4), which is disposed between the first connector (11) and the second connector (21), and the transition connector (4) is connected to the first connector (11) and the second connector (21) by bolts.

2. The arch rib closure device according to claim 1, characterized in that, The first connector (11) and the second connector (21) are respectively provided with a plurality of through holes, and the transition connector (4) is uniformly provided with a plurality of bolt holes, and the through holes and the bolt holes are connected by bolts.

3. The arch rib closure device according to claim 1, characterized in that, The first connector (11) is provided in multiple ways, and the multiple first connectors (11) are evenly connected to the first partition (13) around the central axis of the sleeve (3); the transition connector (4) and the second connector (21) are the same number as the first connectors (11) and correspond one-to-one, and the multiple first connectors (11) are evenly connected to the first partition (13) around the central axis of the sleeve (3).

4. The arch rib closure device according to any one of claims 1-3, characterized in that, Multiple first ribs (12) are provided, and multiple first ribs (12) are evenly connected in the first chord tube (1) along the circumferential direction. The second end of each first rib (12) is connected to the first partition (13). Multiple second ribs (22) are provided, and multiple second ribs (22) are evenly connected in the second chord tube (2) along the circumferential direction. The second end of each second rib (22) is connected to the second partition (23).

5. The arch rib closure device according to claim 4, characterized in that, The first partition (13) is provided with a first inner liner tube (14) on the side opposite to the first connector (11), and the outer wall of the first inner liner tube (14) is connected to each of the first ribs (12). The second partition (23) is provided with a second inner liner tube (24) on the side opposite to the second connector (21), and the outer wall of the second inner liner tube (24) is connected to each of the second ribs (22).

6. The arch rib closure device according to claim 3, characterized in that, The first connector (11) and the second connector (21) are I-beam plates.

7. A bridge arch rib, characterized in that, Includes the arch rib closure device as described in any one of claims 1-6.

8. A steel pipe arch bridge, characterized in that, Includes the bridge arch rib as described in claim 7.

Images