Truss type main arch with inner diaphragms and arch bridge

Abstract

The utility model relates to the technical field of arch bridges, and provides a trussed main arch with inner diaphragms and an arch bridge, the trussed main arch with the inner diaphragms comprises main chord pipes, parallel connection pipes, web pipes and diaphragm plates, and the plate surfaces of the diaphragm plates are parallel to the axes of the parallel connection pipes and the web pipes; one of the two side edges of the transverse partition plate in the transverse bridge direction is connected to the web pipe on the corresponding side, and the other side edge of the transverse partition plate is connected to the web pipe or the suspender outer sleeve on the other side; one of the two side edges of the transverse partition plate in the height direction is connected to the parallel connection pipe on the corresponding side, and a through groove is formed in the other side edge of the transverse partition plate. The problems that in the prior art, steel pipes need to be increased to reduce the free length of the web pipe, working procedures are complicated, and welding is difficult in the construction process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of arch bridges, in particular to a truss-type main arch with inner transverse partitions and an arch bridge. Background Art

[0002] Steel tube concrete arch bridges have developed rapidly in recent years due to their excellent mechanical properties and strong spanning capacity. The steel tube concrete truss main arch ribs are composed of steel tube concrete main chord tubes, belly tubes, and flat tubes. The axis of the belly tube is set along the height direction, and the axis of the flat tube is set along the transverse direction of the bridge. Two belly tubes and two flat tubes are combined into a rectangular structure. The middle part of some flat tubes is also connected to the outer sleeve of the hanger with the axis along the height direction; the four main chord tubes are set along the longitudinal direction of the bridge and are respectively connected to the four corners of the rectangular structure, so as to connect multiple rectangular structures in series; additional inclined belly tubes are often set between two adjacent rectangular structures for connection. However, as the span of the arch bridge increases, the height of the main arch section increases, and the free length of the main arch belly tube connecting the upper and lower main chord tubes of the main arch will also increase, resulting in prominent local stability problems of the compressed belly tube.

[0003] At present, there are two main measures to reduce the free length of the belly tube and prevent the local instability of the compressed belly tube: one is to change the layout of the belly tube from "N-shaped layout" to "K-shaped layout"; the other is to adopt a tubular internal diaphragm structure, by setting a steel pipe between the two belly tubes to support and stiffen the belly tube. However, both methods increase the amount of steel pipes and the number of intersecting line joints between steel pipes. The steel pipes used are rolled from steel plates in the factory. The main process includes cutting, cutting, edge processing, rolling, welding, rounding, etc. The production process of steel pipes is relatively complicated compared to steel plates. In addition, the intersecting line between steel pipes is a spatial curve, which is difficult to position and cut. It is easy to produce deformation and stress concentration during the welding process of the joints. Initial defects such as pores or cracks are easy to form at the junction of the welds, which requires high technical requirements for welders; especially for arch bridges with a span of less than 300m, the space of the trussed main arch rib composed of the main chord tube, belly tube, and flat joint tube is small. Welding intersecting welds in a narrow space increases the technical difficulty. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the amount of steel pipes needs to be increased to reduce the free length of the belly tube, the process is complicated, and the welding of intersecting welds is difficult when the space is narrow, and provides a trussed main arch with an inner transverse partition and an arch bridge.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A trussed main arch with an inner transverse partition comprises a main chord tube, a parallel tube and a belly tube, and also comprises a transverse partition, wherein the plate surface of the transverse partition is arranged parallel to the axis of the parallel tube and the belly tube; one of the two side edges of the transverse partition along the transverse bridge direction is connected to the belly tube on the corresponding side, and the other side is connected to the belly tube or the outer sleeve of the hanger on the other side; one of the two side edges of the transverse partition along the height direction is connected to the parallel tube on the corresponding side, and a through groove is arranged on the other side.

[0007] The height and thickness of the diaphragm are determined according to the actual force requirements, and the width of the diaphragm, that is, its size along the transverse direction of the bridge, is determined according to whether the horizontal pipe is connected to the outer sleeve of the hanger. When the outer sleeve of the hanger is not set on the horizontal pipe, the width of the diaphragm matches the spacing between the belly tubes on both sides, that is, the two sides of the diaphragm are respectively connected to the belly tubes on both sides; when the horizontal pipe is connected to the outer sleeve of the hanger, the width of the diaphragm matches the spacing from the belly tube to the outer sleeve of the hanger, that is, one side of the diaphragm is connected to one of the belly tubes, and the other side is connected to the side of the outer sleeve of the hanger facing the belly tube.

[0008] One of the two side edges of the diaphragm along the height direction is connected to the parallel pipe on the corresponding side, and a through groove is provided on the other side. Specifically, when the diaphragm is connected to the upper end of the abdominal tube, the upper side edge of the diaphragm is connected to the bottom of the upper parallel pipe, and the lower side edge of the diaphragm is opened with a through groove; when the diaphragm is connected to the lower end of the abdominal tube, the lower side edge of the diaphragm is connected to the top of the lower parallel pipe, and the upper side edge of the diaphragm is opened with a through groove.

[0009] The trussed main arch with inner diaphragms of the present invention supports and stiffens the belly tube by adding diaphragms, so that the belly tube is in a supported boundary condition within the range where the diaphragms are connected to the belly tube, thereby limiting the lateral deformation of the belly tube within the range, reducing the free length of the belly tube, and avoiding local instability of the belly tube under pressure and local deformation of the structure; and considering that the free edge of the diaphragm, that is, the side not connected to any of the belly tube, the parallel tube, and the outer sleeve of the hanger, is prone to local instability, the present invention also provides a through groove on the free edge of the diaphragm.

[0010] At the same time, since the diaphragm of this scheme is a plate, compared with the existing technology that uses pipe fittings for support and reinforcement, the diaphragm manufacturing process of this scheme is simpler and more economical; and the intersection lines between the diaphragm and the belly tube and the parallel pipe are all straight lines, which can reduce the welding difficulty of the diaphragm, thereby improving the construction quality and efficiency, and is more suitable for the case where the arch rib space of the truss main arch is small, such as the arch bridge span is less than 300m.

[0011] As a preferred solution of the utility model, both ends of the abdominal tube along the height direction are connected with a transverse partition.

[0012] This solution is that when no outer sleeve of the hanger rod is set on the parallel pipe, two transverse partitions are respectively set at both ends along the height direction of the belly pipe whose free length needs to be reduced, and the left and right sides of the upper transverse partition are respectively connected to the belly pipes on both sides, and the upper side is connected to the upper parallel pipe, while the left and right sides of the lower transverse partition are respectively connected to the belly pipes on both sides, and the lower side is connected to the lower parallel pipe.

[0013] When a hanger outer sleeve is provided on the parallel pipe, two transverse partitions are respectively provided at both ends in the height direction of the belly pipe whose free length needs to be reduced, one side of the upper transverse partition is connected to the belly pipe, and the other side is connected to the side of the hanger outer sleeve facing the belly pipe, and the upper side is connected to the upper parallel pipe, while one side of the lower transverse partition is connected to the belly pipe, and the other side is connected to the side of the hanger outer sleeve facing the belly pipe, and the lower side is connected to the lower parallel pipe.

[0014] As a preferred solution of the utility model, both sides of the outer sleeve of the suspension rod along the transverse direction are connected with transverse partitions.

[0015] This solution is aimed at the situation where a suspension rod outer sleeve is provided on the parallel pipe, that is, two transverse partitions are respectively provided on both sides of the suspension rod outer sleeve along the transverse bridge direction and are respectively connected to the transverse partitions on the corresponding sides.

[0016] As a preferred solution of the utility model, one end of the through groove away from the free edge of the diaphragm is arc-shaped.

[0017] In this solution, when the diaphragm is connected to the upper flat pipe, the free edge of the lower side of the diaphragm and the upper end of the through groove are arc-shaped; when the diaphragm is connected to the lower flat pipe, the free edge of the upper side of the diaphragm and the lower end of the through groove are arc-shaped; the arc includes but is not limited to circular arc, elliptical arc, and spline curve.

[0018] In this solution, the end of the through groove away from the free edge of the transverse partition is arc-shaped, which can avoid stress concentration inside the through groove.

[0019] As a preferred solution of the utility model, a collar plate is arranged along the through groove, the plate surface of the collar plate is parallel to the normal direction of the diaphragm, and the dimension of the collar plate along the normal direction of the diaphragm is greater than the thickness of the diaphragm.

[0020] This solution can further ensure that the diaphragm will not suffer from local instability.

[0021] As a preferred solution of the utility model, the transverse partition is provided with welding holes at the intersection of the parallel connecting pipe and the belly pipe, and at the intersection of the parallel connecting pipe and the outer sleeve of the suspension rod.

[0022] This solution can prevent the welds between the diaphragm and the belly pipe, the welds between the diaphragm and the parallel pipe, and the welds between the parallel pipe and the outer sleeve of the suspension rod from intersecting, thereby avoiding the stress concentration phenomenon caused by the intersection of the welds.

[0023] As a preferred solution of the utility model, a stiffening rib is further provided in the middle of the diaphragm.

[0024] When the size of the diaphragm is large, local deformation or instability is prone to occur in the middle of the diaphragm. This solution adds stiffening ribs in the middle of the diaphragm to improve the diaphragm's anti-deformation capacity.

[0025] As a preferred solution of the utility model, the length of the stiffening ribs is arranged along the height direction, the number of the stiffening ribs is greater than one, and the stiffening ribs are arranged at intervals along the width direction of the diaphragm.

[0026] This scheme provides one of the specific ways to set the stiffening ribs.

[0027] As a preferred solution of the utility model, the main chord tube is a steel tube concrete structure.

[0028] This proposal provides one of the specific main chord tube structures.

[0029] An arch bridge comprises a main beam, wherein the main beam is connected to a truss-type main arch with an inner transverse partition of the utility model.

[0030] The arch bridge of this scheme adopts a trussed main arch with an internal diaphragm of the utility model, which can reduce the free length of the belly tube in the main arch, thereby reducing the possibility of local instability of the belly tube, and is more suitable for occasions where the main arch cross-section height is large; and when the main arch is transported, the diaphragm can also serve as a temporary supporting structure, effectively preventing the main arch from being locally deformed during transportation.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0032] 1. The utility model of a trussed main arch with an inner diaphragm can reduce the free length of the belly tube, avoid local instability of the belly tube under pressure and local deformation of the structure; and compared with the existing technology of using pipe fittings for support and reinforcement, the manufacturing process of the diaphragm of the utility model is simpler and has higher economy; and the intersection lines of the diaphragm with the belly tube and the parallel pipe are all straight lines, which can reduce the difficulty of welding the diaphragm, thereby improving the construction quality and efficiency, and is more suitable for the case where the arch rib space of the trussed main arch is small, such as the arch bridge span is less than 300m.

[0033] 2. The arch bridge of the utility model adopts a trussed main arch with an inner diaphragm of the utility model, which can reduce the free length of the belly tube in the main arch, thereby reducing the possibility of local instability of the belly tube, and is more suitable for occasions where the main arch cross-section height is large; and when the main arch is transported, the diaphragm can also serve as a temporary supporting structure, effectively preventing the main arch from being locally deformed during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a side view structural schematic diagram of a truss-type main arch with inner transverse partitions of the utility model;

[0035] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle AA section;

[0036] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the middle BB section;

[0037] Figure 4 yes Figure 3 A schematic diagram of the partial structure of the intersection of the middle flat tube and the abdominal tube;

[0038] Figure 5 It is a three-dimensional structural diagram of the diaphragm;

[0039] Figure 6 It is a schematic diagram of the main structure in the prior art of using steel pipes to reinforce and support the abdominal tube;

[0040] Icons: 1-main chord tube; 2-flat connecting tube; 3-abdomen tube; 4-outer sleeve of hanger rod; 5-cross partition; 51-through groove; 52-through welding hole; 53-stiffening rib; 54-lapel plate. DETAILED DESCRIPTION

[0041] The utility model is described in detail below in conjunction with the accompanying drawings.

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0043] In the description of the following specific embodiments, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the device / apparatus is usually used. These terms of orientation or position relationship are only for the convenience of description or simplification of the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0044] The terms "horizontal", "vertical" and the like do not require the corresponding devices / components / elements to be absolutely horizontal or vertical or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in specific directions such as "horizontal" and "vertical", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0045] The terms “first”, “second”, “third”, etc. are merely used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0046] The terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be welding, riveting, bolting, threaded connection and other commonly used connection methods in the field. It can be directly connected or indirectly connected through an intermediate medium. It can also be the internal connection of two elements.

[0047] Example 1

[0048] like Figure 1 , Figure 2 , Figure 5 As shown, the trussed main arch with inner diaphragm adopted in this embodiment comprises a main chord tube 1, a parallel tube 2 and a belly tube 3, and also comprises a transverse partition 5, the plate surface of the transverse partition 5 is arranged parallel to the axis of the parallel tube 2 and the belly tube 3; one of the two side edges along the transverse bridge direction of the transverse partition 5 is connected to the belly tube 3 on the corresponding side, and the other side edge is connected to the belly tube 3 on the other side or the outer sleeve 4 of the hanger; one of the two side edges along the height direction of the transverse partition 5 is connected to the parallel tube 2 on the corresponding side, and a through groove 51 is arranged on the other side edge.

[0049] Specifically, Figure 2 As shown, this embodiment corresponds to the situation where the horizontal connecting pipe 2 is not connected to the outer sleeve 4 of the suspension rod, that is, this embodiment adopts a structural form in which the left and right sides of the diaphragm 5 are respectively connected to the abdominal pipe 3 on both sides. Figure 6 It is a schematic diagram of the main structure of the solution of using steel pipes to reinforce the belly tube 3 in the prior art. It can be seen that the prior art mainly uses a large number of steel pipes to support the belly tube 3, the amount of steel pipes is large, and the intersection lines of the steel pipes, the belly tube 3 and the flat tube 2 are all spatial curves, and the welding difficulty is much greater than that of the present embodiment.

[0050] Furthermore, both ends of the abdominal tube 3 in the height direction are connected with a diaphragm 5. Specifically, Figure 2 As shown, in this embodiment, two transverse partitions 5 are arranged, which are respectively located on the upper and lower sides of the abdominal tube 3, wherein the upper side edge of the upper transverse partition 5 is connected to the upper parallel tube 2, and the lower side edge of the lower transverse partition 5 is connected to the lower parallel tube 2.

[0051] Furthermore, the end of the through groove 51 away from the free edge of the diaphragm 5 is arc-shaped. Figure 2 and Figure 5 As shown, the transverse dimension of the transverse partition 5 of this embodiment is relatively large, so the through groove 51 arranged on the free edge of the transverse partition 5 is a part of an arc on a circle with a relatively large diameter.

[0052] Furthermore, a flap is provided along the through groove 51, the surface of the flap is parallel to the normal direction of the diaphragm 5, and the dimension of the flap along the normal direction of the diaphragm 5 is greater than the thickness of the diaphragm 5. Specifically, the structure of the flap is as follows: Figure 5 As shown, its shape corresponds to the shape of the through slot 51 used in this embodiment, and is also arc-shaped.

[0053] Furthermore, the diaphragm 5 is provided with welding holes 52 at the intersection of the parallel tube 2 and the belly tube 3, and at the intersection of the parallel tube 2 and the outer sleeve 4 of the suspension rod. Specifically in this embodiment, the welding holes 52 are provided at the upper left and right ends of the upper diaphragm 5, and at the lower left and right ends of the lower diaphragm 5.

[0054] Furthermore, a stiffening rib 53 is provided in the middle of the diaphragm 5 .

[0055] Furthermore, the length of the stiffening rib 53 is arranged along the height direction, the number of the stiffening rib 53 is greater than one, and each stiffening rib 53 is arranged at intervals along the width direction of the diaphragm 5. Specifically, as Figure 2 As shown, the number of stiffening ribs 53 is three.

[0056] Furthermore, the main chord tube 1 is a steel tube concrete structure.

[0057] Example 2

[0058] like Figure 1 , Figure 3 and Figure 4 As shown, on the basis of Example 1, this embodiment corresponds to the situation where a hanger outer sleeve 4 is provided on the parallel pipe 2, and the connection form of the transverse partition 5 is changed to that the transverse partition 5 is connected to the belly pipe 3 whose free length needs to be reduced on one side along the transverse bridge direction, and is connected to the side of the hanger outer sleeve 4 facing the belly plate.

[0059] Furthermore, both sides of the outer sleeve 4 of the boom along the transverse direction are connected with a transverse partition 5. Specifically, Figure 3As shown, this embodiment is provided with four webs, which are respectively located at the four corners of the rectangular structure composed of the web tube 3, the parallel tube 2 and the main chord tube 1.

[0060] Furthermore, since the dimension of the diaphragm 5 in the transverse direction of the present embodiment is affected by the outer sleeve 4 of the hanger rod and is reduced by nearly half compared to the diaphragm 5 in Embodiment 1, the diaphragm 5 in the present embodiment is not prone to local instability in the middle part and the stiffening ribs 53 can be eliminated.

[0061] Furthermore, since the size of the diaphragm 5 in the transverse direction of this embodiment is smaller than that of the diaphragm 5 in Embodiment 1, it is not convenient to set a circular arc-shaped through groove 51 with a larger diameter as in Embodiment 1. Figure 3 and Figure 4 As shown, the through slot 51 of this embodiment adopts a combination of a semicircular arc shape and a rectangle with a smaller diameter, and is an oblong hole shape as a whole.

[0062] Example 3

[0063] An arch bridge comprises a main beam connected to any one of the trussed main arches with inner transverse diaphragms in embodiments 1 to 2.

[0064] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A trussed main arch with an inner transverse partition, comprising a main chord tube (1), a parallel tube (2) and a belly tube (3), characterized in that: It also comprises a transverse partition (5), the plate surface of which is arranged parallel to the axis of the parallel tube (2) and the belly tube (3); one of the two side edges of the transverse partition (5) along the transverse bridge direction is connected to the belly tube (3) on the corresponding side, and the other side edge is connected to the belly tube (3) or the outer sleeve (4) of the suspension rod on the other side; one of the two side edges of the transverse partition (5) along the height direction is connected to the parallel tube (2) on the corresponding side, and a through groove (51) is arranged on the other side edge.

2. A trussed main arch with inner diaphragms according to claim 1, characterized in that: Both ends of the abdominal tube (3) in the height direction are connected to the transverse partition (5).

3. The trussed main arch with inner diaphragm according to claim 1, characterized in that: The diaphragm (5) is connected to both sides of the suspension rod outer sleeve (4) along the transverse direction.

4. A trussed main arch with inner diaphragms according to any one of claims 1 to 3, characterized in that: One end of the through groove (51) away from the free edge of the transverse partition (5) is arc-shaped.

5. A trussed main arch with inner diaphragms according to any one of claims 1 to 3, characterized in that: A collar plate (54) is arranged along the through groove (51), the plate surface of the collar plate (54) is parallel to the normal direction of the transverse partition (5), and the dimension of the collar plate (54) along the normal direction of the transverse partition (5) is greater than the thickness of the transverse partition (5).

6. A trussed main arch with inner diaphragms according to any one of claims 1 to 3, characterized in that: The transverse partition (5) is provided with welding holes (52) at the intersection of the parallel connecting pipe (2) and the belly pipe (3), and at the intersection of the parallel connecting pipe (2) and the outer sleeve (4) of the suspension rod.

7. A trussed main arch with inner diaphragms according to any one of claims 1 to 3, characterized in that: A stiffening rib (53) is also provided in the middle of the transverse partition (5).

8. The trussed main arch with inner diaphragm according to claim 7, characterized in that: The length of the stiffening ribs (53) is arranged along the height direction, the number of the stiffening ribs (53) is greater than one, and the stiffening ribs (53) are arranged at intervals along the width direction of the transverse partition (5).

9. A trussed main arch with inner diaphragms according to any one of claims 1 to 3, characterized in that: The main chord tube (1) is a steel tube concrete structure.

10. An arch bridge, comprising a main beam, characterized in that: The main beam is connected to the trussed main arch with inner diaphragm as claimed in any one of claims 1 to 9.

Images