Suspender anchoring structure suitable for double-layer cable surface of net-shaped suspender arch bridge

Abstract

The utility model discloses a suspender anchoring structure suitable for a double-layer cable surface of a net-shaped suspender arch bridge, which comprises a cable arch anchoring structure positioned at a cable arch anchoring part of a suspender and an arch rib and a cable beam anchoring structure positioned at a cable beam anchoring part of the suspender and a main beam, the cable arch anchoring structure is of a lug plate type anchoring structure, and the cable beam anchoring structure is of an anchoring plate type anchoring structure. According to the utility model, the structure is relatively simple, and the conflict of cross anchoring of the net-shaped suspenders is avoided through the internal and external offset of the arch lifting lug plate and the beam anchoring plate; the number of plates is small, the force transmission path is short, stress is uniform, the construction difficulty is low, the integrity and reliability of anchoring structure stress are improved, and the construction speed is increased; the whole anchoring system is arranged outside the arch rib and the main beam, and later maintenance is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of bridge manufacturing technology, specifically relating to a suspender anchoring structure suitable for double-layer cable surfaces of a mesh suspender arch bridge. Background Technology

[0002] The anchorage structure of the arch rib hangers in a mesh-type suspender arch bridge is similar to that of a conventional parallel suspender arch bridge. Currently, the commonly used arch rib hanger anchorage structures are mainly of the following three types: ① ear plate type; ② internal pressure-bearing type; ③ external pressure-bearing type. In the traditional ear plate type structure, the hangers are connected to the ear plates via pin hinges. The ear plates are orthogonal to the transverse diaphragms on the arch and inserted into the arch rib, thus directly transferring the cable force to the transverse diaphragms of the arch rib via the ear plates.

[0003] The cable-stayed arch bridge's cable-stayed girder anchorage structure is similar to the connection between the stay cables and the main girder in a cable-stayed bridge. Currently, the commonly used cable-stayed girder anchorage structures mainly include the following four types: ① anchor box type; ② ear plate type; ③ anchor pipe type; ④ anchor plate type. The traditional anchor plate type structure typically has a groove cut into the upper part of the anchor plate, with the inside of the groove welded to the outside of the anchor tube. The stay cables then pass through the anchor tube and are anchored to the bottom of the anchor tube. The lower part of the anchor plate is welded to the steel main girder, thereby transferring the cable force to the main girder.

[0004] The arrangement of suspenders in a mesh-type suspender arch bridge differs significantly from that in a parallel suspender arch bridge. In a parallel suspender arch bridge, all suspenders on one side are on the same cable plane (the cable plane formed by the line connecting the arch axis a and the intersection of the arch beam). However, due to the need for intersections, mesh-type suspender arch bridges have two cable planes on one side (generally, suspenders with the same inclination direction are on one cable plane). The traditional arch rib suspender anchorage structure of parallel suspender arch bridges and the cable beam anchorage structure of cable-stayed bridges are insufficient to meet the requirements of the double-cable plane intersection arrangement in mesh-type suspender arch bridges. Furthermore, compared to conventional parallel suspenders, the anchorage points of mesh suspenders are closer together on the upper part of the main arch, leading to problems such as conflicts in the position of the diaphragm at the intersection anchorage points. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to provide a suspension anchoring structure suitable for the double-layer cable surface of a mesh suspension arch bridge, so as to solve the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A suspender anchorage structure suitable for a double-layer cable plane of a net-structured suspender arch bridge is provided. The net-structured suspender arch bridge includes a main beam and an arch rib connected by suspenders. The structure includes a cable arch anchorage structure located at the cable arch anchorage position between the suspender and the arch rib, and a cable beam anchorage structure located at the cable beam anchorage position between the suspender and the main beam. The cable arch anchorage structure adopts an ear plate type anchorage structure, and the cable beam anchorage structure adopts an anchor pull plate type anchorage structure.

[0008] As described above, the suspender anchorage structure applicable to the double-layer cable plane of the net-like suspender arch bridge includes an arch rib comprising an arch rib web, an arch rib bottom plate, and an arch rib top plate. The cable arch anchorage structure includes suspender lugs and suspender point partitions. The suspender point partitions are located between the arch rib bottom plate, the arch rib web, and the arch rib top plate. The suspender lugs pass through the arch rib bottom plate and are vertically inserted into the suspender point partitions along the direction of the arch rib web. The suspender lugs located on the inner and outer cable planes are symmetrically arranged on both sides of the vertical main arch centerline.

[0009] As described above, the suspender anchoring structure applicable to the double-layer cable surface of the mesh suspender arch bridge is provided with a longitudinal reinforcing plate on the inner side of the top plate of the arch rib. The longitudinal reinforcing plate of the arch rib is broken at the suspension point partition and welded tightly to the suspension point partition.

[0010] As described, for the suspender anchorage structure applicable to the double-layer cable plane of a mesh suspender arch bridge, a manhole is provided on the suspending point partition located inside the centerline of the suspender.

[0011] As described, the suspender anchoring structure applicable to the double-layer cable surface of a mesh suspender arch bridge has a certain gap between the top of some of the suspending point partitions and the top plate of the arch rib.

[0012] As described above, the suspender anchoring structure applicable to the double-layer cable surface of a mesh suspender arch bridge is provided with a first transverse reinforcing plate arranged parallel to the suspending point partition on both end faces of the suspender lug plate, and a second transverse reinforcing plate arranged along the end face of the suspending point partition on the suspender lug plate located outside the arch rib.

[0013] As described above, the cable anchorage structure applicable to the double-layer cable plane of a mesh-type cable arch bridge includes a main beam comprising a top plate, a web, and a bottom plate. The cable-beam anchorage structure comprises an anchor plate and an anchor pipe. The anchor plate is arranged transversely along the bridge direction and passes through the top plate of the main beam before being obliquely inserted into the web. The exposed end of the anchor plate has a slot and is provided with the anchor pipe. The cable rod passes through the anchor pipe and is anchored to the bottom of the anchor pipe.

[0014] As described, for the suspender anchorage structure applicable to the double-layer cable plane of the suspender arch bridge, the anchor plate is set to be eccentric to the inner or outer side relative to the web of the main beam for the inner and outer cable planes of the suspender.

[0015] As described, the suspender anchorage structure applicable to the double-layer cable plane of the mesh suspender arch bridge is provided with a longitudinal reinforcing plate on the web of the main beam, and the longitudinal reinforcing plate on the web of the main beam is broken at the anchor plate.

[0016] As described above, the anchoring structure for a double-layer cable plane of a mesh-type suspender arch bridge includes an anchor pipe end plate at the upper end of the anchor pipe, first anchor reinforcement plates on both sides of the anchor plate located at the slot, the upper end of the first anchor reinforcement plate being welded to the anchor pipe end plate, and the lower end maintaining a certain space with the top plate of the main beam, a second anchor reinforcement plate at the lower part of the anchor plate, the end face of the anchor plate being welded to the end face of the second anchor reinforcement plate, and the second anchor reinforcement plate being welded to the web of the main beam.

[0017] The beneficial effects of this utility model's technical solution are:

[0018] The structure is relatively simple. By offsetting the inner and outer sides of the hanging lugs on the arch and the anchor plates on the beam, the conflict of cross anchoring of the mesh hangers is avoided. The number of plates is small, the force transmission path is short, the force is uniform, and the construction difficulty is low, which improves the overall strength and reliability of the anchor structure and speeds up the construction. The entire anchor system is outside the arch rib and main beam, which facilitates later maintenance. Attached Figure Description

[0019] To further illustrate the above-mentioned objectives, structural features, and effects of this utility model, the following will describe this utility model in detail with reference to the accompanying drawings.

[0020] Figure 1 This is a general layout diagram of the mesh-suspended arch bridge, a preferred embodiment of the present invention.

[0021] Figure 2 This is a partial enlarged view of the arch rib segment of the preferred embodiment of this utility model;

[0022] Figure 3 This is a structural diagram of the suspension rod according to a preferred embodiment of the present invention;

[0023] Figure 4 This is a preferred embodiment of the present invention, showing the arrangement of the hanging points on the arch.

[0024] Figure 5 This is a preferred embodiment of the present invention, showing the arrangement of the lifting points on the beam.

[0025] Figure 6 This is a schematic diagram of the cable arch anchorage structure applicable to the outer suspension point of the preferred embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the cable arch anchorage structure applicable to the inner lifting point of the preferred embodiment of the present invention;

[0027] Figure 8 for Figure 6 or Figure 7 Sectional view along the central axis 1-1;

[0028] Figure 9This is a schematic diagram of a preferred embodiment of the present invention applicable to a full-height suspension point partition structure of the outer suspension point;

[0029] Figure 10 This is a schematic diagram of a preferred embodiment of the present invention applicable to a partition structure with a non-full-height outer suspension point;

[0030] Figure 11 This is a schematic diagram of a cable-beam anchorage structure in the cable-plane direction, according to a preferred embodiment of the present invention.

[0031] Figure 12 for Figure 11 Sectional view along the middle 2-2 direction (applicable to the outer lifting point);

[0032] Figure 13 This is a schematic diagram of another cable-beam anchorage structure in the cable-plane direction, which is a preferred embodiment of this utility model;

[0033] Figure 14 for Figure 13 Sectional view along the middle 2-2 direction (applicable to the inner lifting point);

[0034] In the diagram: 1. Hanger; 2. Main beam; 21. Top plate of main beam; 22. Web of main beam; 23. Anchorage of cable-stayed beam; 24. Bottom plate of main beam; 25. Transverse diaphragm of main beam; 221. Longitudinal reinforcing plate of web of main beam; 3. Arch rib; 31. Web of arch rib; 32. Bottom plate of arch rib; 33. Top plate of arch rib; 34. Longitudinal reinforcing plate of arch rib; 35. Anchorage of cable-stayed arch; 4. Lifting lug plate; 41. First transverse reinforcing plate; 42. Second transverse reinforcing plate; 5. Lifting point diaphragm; 51. Manhole; 6. Anchor plate; 61. First anchor plate; 62. Second anchor plate. 7. Anchor pipe; 8. Anchor pipe end plate; 9. Anchor pipe pad; a. Arch axis; b. Main arch centerline 1; c. Main arch centerline 2; d. Theoretical lifting point on the outer side of the arch; e. Theoretical lifting point on the inner side of the arch; f. Centerline of the outer hanger; g. Centerline of the inner hanger; h. Theoretical lifting point on the outer side of the beam; i. Theoretical lifting point on the inner side of the beam; j. Centerline of the main beam web; k. Road centerline; l. Centerline of the hanger; m. Positioning point of the hanger on the arch; n. Point where the hanger exits the arch; o. Centerline of the lifting lug hole; p. Top of the outer web stiffener; q. Top of the inner web stiffener. Detailed Implementation

[0035] The terms “utility model” and “this utility model” used in this specification are intended to broadly refer to all subject matter of this specification and any of the following patent claims. Statements containing these terms should not be construed as limiting the subject matter described herein or limiting the meaning or scope of any of the following patent claims. Furthermore, this specification does not attempt to describe or limit the subject matter covered by any claim of any particular component, paragraph, statement, or drawing of this application. The subject matter should be understood with reference to the entire specification, all drawings, and any of the following claims. This utility model may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered limiting.

[0036] The details of the present invention will now be discussed with reference to the accompanying drawings, which are illustrated by way of example only. In the drawings, similar features or components may be labeled with the same reference numerals.

[0037] The use of the terms "comprising," "having," and "including," and variations thereof, herein means to include the items listed herein, their equivalents, and additional items. While reference may be made in the description of the drawings to directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc., for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the invention in any form. Furthermore, terms such as "first," "second," "third," etc., are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.

[0038] See Figures 1 to 5 As shown, this utility model provides a suspender anchoring structure suitable for a double-cable-stayed grid arch bridge. The grid arch bridge includes a main beam 2 and an arch rib 3 connected by suspenders 1. The suspender anchoring structure includes a cable arch anchoring structure located at the cable arch anchoring part 35 between the suspender 1 and the arch rib 3, and a cable beam anchoring structure located at the cable beam anchoring part 23 between the suspender 1 and the main beam 2. The cable arch anchoring structure adopts an ear plate type anchoring structure, and the cable beam anchoring structure adopts an anchor pull plate type anchoring structure.

[0039] Figure 4 A preferred embodiment of the arch suspension point arrangement diagram is shown, wherein: b represents the main arch centerline 1, c represents the main arch centerline 2, d represents the theoretical suspension point on the outer side of the arch, e represents the theoretical suspension point on the inner side of the arch, f represents the centerline of the outer suspension rod, and g represents the centerline of the inner suspension rod.

[0040] Figure 5 A preferred embodiment of the beam lifting point layout diagram is shown, where: h represents the theoretical outer lifting point on the beam, i represents the theoretical inner lifting point on the beam, j represents the center line of the main beam web, the upper end face of the main beam web where j is located is the top surface of the main beam steel structure, the lower end face is the bottom surface of the main beam steel structure, and k represents the road center line.

[0041] See Figures 6 to 10 As shown, the arch rib 3 includes an arch rib web 31, an arch rib bottom plate 32, and an arch rib top plate 33. The cable arch anchoring structure includes a lifting lug plate 4 and a lifting point partition plate 5. The lifting point partition plate 5 is located between the arch rib bottom plate 32, the arch rib web 31, and the arch rib top plate 33. The lifting lug plate 4 passes through the arch rib bottom plate 32 and is vertically inserted into the lifting point partition plate 5 along the direction of the arch rib web 31. The lifting lug plates 4 located on the inner and outer cable surfaces are symmetrically arranged on both sides of the vertical main arch centerline (main arch centerline 1b in the figure).

[0042] The inner side of the arch rib top plate 33 is provided with an arch rib longitudinal reinforcing plate 34. The arch rib longitudinal reinforcing plate 34 is broken at the suspension point partition 5 and welded tightly to the suspension point partition 5.

[0043] A manhole 51 is reserved on the suspension point partition 5 located inside the center line of the suspension rod 1.

[0044] Figure 6 A schematic diagram of a preferred embodiment of a cable arch anchorage structure applicable to the outer suspension point is shown. Figure 7 A schematic diagram of the cable arch anchoring structure applicable to the inner suspension point of the preferred embodiment is shown, wherein: l represents the center line of the suspension rod, m represents the positioning point on the suspension rod arch, n represents the suspension rod exit point, and o represents the center line of the lug hole.

[0045] See Figure 10 As shown, in order to avoid conflicts between the partitions at the cross anchor points, some of the suspension point partitions 5 are not installed at full height, that is, there is a certain gap between the top of the suspension point partition 5 and the top plate 33 of the arch rib.

[0046] The two end faces of the lifting lug plate 4 are provided with a first transverse reinforcing plate 41 arranged parallel to the lifting point partition plate 5. The lifting lug plate 4 located on the outside of the arch rib 3 is provided with a second transverse reinforcing plate 42 arranged along the end face of the lifting point partition plate 5, so as to enhance the lateral stiffness of the lifting lug plate 4 and its overall performance with the arch rib 3, so that the force on the lifting rod 1 can be reliably transmitted to the arch rib 3.

[0047] A lifting point partition 5 is added at the anchoring position of the hanger rod, and the inclination angle of the lifting point partition 5 is consistent with the inclination angle of the center line of the corresponding hanger rod 1. The arch rib bottom plate 32 and the lifting point partition 5 have slots. The lifting lug plate 4 extends into the interior of the arch rib 3 from the slot of the arch rib bottom plate 32. The lifting lug plate 4 is welded to the lifting point partition 5 inside the arch rib 3 and welded to the arch rib bottom plate 32 at the slot. The lifting lug plate 4 has a lifting lug hole corresponding to each hanger rod 1 for anchoring the hanger rod 1.

[0048] The force transmission path of the cable arch anchoring structure is: suspender 1 - suspender lug 4 - suspending point partition 5 - arch rib 3.

[0049] Figure 10A schematic diagram of a preferred embodiment applicable to a non-full-height suspension point partition structure of the outer suspension point is shown, where: p represents the top of the outer web stiffening rib, and q represents the top of the inner web stiffening rib.

[0050] See Figures 11 to 14 As shown, the main beam 2 includes a main beam top plate 21, a main beam web plate 22, a main beam bottom plate 24, and a main beam transverse diaphragm plate 25. The cable beam anchorage structure includes an anchor plate 6 and an anchor pipe 7. The anchor plate 6 is arranged along the transverse direction of the bridge, that is, it is installed by rotating 90° relative to the lug plate 4 on the arch. After passing through the main beam top plate 21, it is obliquely inserted into the main beam web plate 22. The exposed end of the anchor plate 6 is provided with an anchor pipe 7. The hanger 1 passes through the anchor pipe 7 and is anchored to the bottom of the anchor pipe 7.

[0051] For the two cable surfaces on the left and right sides of the hanger 1, the anchor plate 6 is set to be eccentric to the inner or outer side relative to the web plate 22 of the main beam to meet the anchorage requirements of the double-layer hanger.

[0052] The upper part of the anchor plate 6 is slotted, and the inside of the slot is welded to the outside of the anchor pipe 7. The top plate 21 and web 22 of the main beam have slots. The anchor plate 6 extends into the interior of the main beam 2 from the slot in the top plate 21. At the slot in the top plate 21, the anchor plate 6 is welded to the top plate 21. Inside the main beam 2, the anchor plate 6 is welded to the web 22. The web 22 of the main beam is provided with a longitudinal reinforcing plate 221, which is interrupted at the anchor plate 6.

[0053] An anchor pipe 7 has an anchor pipe end plate 8 at its upper end and an anchor pipe pad 9 at its lower end. Anchor plates 6 are positioned on both sides of the groove opening, with first anchor reinforcement plates 61. The upper end of the first anchor reinforcement plate 61 is welded to the anchor pipe end plate 8, and the lower end maintains a certain space with the top plate 21 of the main beam. The first anchor reinforcement plate 61 can share the load with the anchor plate 6, enhancing the stability of the anchor plate 6 and making the stress distribution of the component more reasonable. A second anchor reinforcement plate 62 is provided at the lower part of the anchor plate 6. The end faces of the anchor plate 6 and the second anchor reinforcement plate 62 are welded together, and the second anchor reinforcement plate 62 is welded to the web plate 22 of the main beam to enhance the overall performance of the anchoring structure and the main beam 2, ensuring that the force on the hanger 1 can be reliably transmitted to the main beam 2.

[0054] The force transmission path of the cable-stayed beam anchorage structure is: hanger 1 - anchor pipe 7 - anchor plate 6 - main beam 2.

[0055] The tensioning of the suspender 1 adopts the method of fixing on the arch and tensioning on the beam. The tensioning operation at the beam end of the suspender is carried out on the top of the anchor plate 6.

[0056] This invention proposes a suspension rod anchorage structure suitable for a mesh suspension rod arch bridge. Unlike the traditional anchorage structure of a parallel suspension rod arch bridge, the suspension lug plate on the arch and the anchor tie plate on the beam are set with inner and outer eccentricity, realizing the cross anchorage of the mesh suspension rods.

[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boom anchoring structure suitable for a double deck of a net-like boom arch bridge, the net-like boom arch bridge including a girder and an arch rib connected by a boom, characterized by, The cable arch anchoring structure at the cable arch anchoring position of the hanger and the arch rib adopts an ear plate type anchoring structure, and the cable beam anchoring structure at the cable beam anchoring position of the hanger and the main beam adopts an anchor plate type anchoring structure.

2. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 1, characterized in that, The arch rib comprises an arch rib web plate, an arch rib bottom plate and an arch rib top plate, the cable arch anchoring structure comprises an ear plate and a hanger point partition plate, the hanger point partition plate is arranged between the arch rib bottom plate, the arch rib web plate and the arch rib top plate, the ear plate is vertically inserted into the hanger point partition plate through the arch rib bottom plate along the direction of the arch rib web plate, and the ear plates at the inner and outer cable surfaces are symmetrically arranged on both sides of the vertical main arch center line.

3. The anchorage structure for the hanger of the double decked cable plane of the reticulated hanger arch bridge according to claim 2, wherein, The inside of the arch rib top plate is provided with an arch rib longitudinal reinforcing plate, the arch rib longitudinal reinforcing plate is disconnected at the hanger point partition plate and is tightly welded with the hanger point partition plate.

4. The anchorage structure for the hanger of the double decked cable plane of the reticulated hanger arch bridge according to claim 2, wherein, A manhole is reserved on the hanger point partition plate inside the center line of the hanger.

5. The anchorage structure for the hanger of the double decked cable plane of the reticulated hanger arch bridge according to claim 2, wherein, The top of part of the hanger point partition plate is spaced apart from the arch rib top plate.

6. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 2, wherein, The two side end faces of the ear plate are provided with first transverse reinforcing plates arranged in parallel with the hanger point partition plate, and the ear plate on the outside of the arch rib is provided with second transverse reinforcing plates arranged along the end face of the hanger point partition plate.

7. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 1, wherein, The main beam comprises a main beam top plate, a main beam web plate and a main beam bottom plate, the cable beam anchoring structure comprises an anchor plate and an anchor pipe, the anchor plate is arranged along the transverse bridge direction and is obliquely inserted into the main beam web plate after passing through the main beam top plate, the exposed end portion of the anchor plate is provided with a notch and the anchor pipe, the hanger passes through the anchor pipe and is anchored at the bottom of the anchor pipe.

8. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 7, characterized in that, For the inner and outer cable surfaces of the hanger, the anchor plate is arranged to be eccentric to the inner side or the outer side of the main beam web plate.

9. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 7, wherein, The main beam web plate is provided with a main beam web plate longitudinal reinforcing plate, and the main beam web plate longitudinal reinforcing plate is disconnected at the anchor plate.

10. The anchorage structure for the suspender of the double decked suspender cable surface of the reticulated suspender arch bridge according to claim 7, wherein, The upper end of the anchor pipe is provided with an anchor pipe end plate, the first anchor reinforcing plates are arranged on both sides of the notch of the anchor plate, the upper end of the first anchor reinforcing plate is welded with the anchor pipe end plate, and the lower end of the first anchor reinforcing plate is spaced apart from the main beam top plate, the second anchor reinforcing plate is arranged at the lower portion of the anchor plate, the end face of the anchor plate and the second anchor reinforcing plate is welded and connected, and the second anchor reinforcing plate is welded and connected with the main beam web plate.

Images