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

Abstract

The invention discloses a suspender anchoring structure suitable for a double-layer cable surface of a reticular 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 beam anchoring structure is of an anchoring plate type anchoring structure. The structure is simple, and the conflict of cross anchoring of the net-shaped suspenders is avoided through internal and external offset of the on-arch lifting lug plate and the on-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] The present invention belongs to the technical field of bridge manufacturing, and particularly relates to a hanger anchoring structure suitable for a double cable plane of a reticulated hanger arch bridge. Background Art

[0002] The arch rib hanger anchoring structure of a reticulated hanger arch bridge is similar to that of a conventional parallel hanger arch bridge. Currently, the commonly used arch rib hanger anchoring structure forms mainly include the following 3 types: ① ear plate type; ② internal box pressure-bearing type; ③ external box pressure-bearing type. In the traditional ear plate type structure, the hanger is connected to the ear plate through a pin hinge. The ear plate is orthogonal to the cross diaphragm on the arch and inserted into the arch rib, so as to directly transfer the cable force to the cross diaphragm of the arch rib through the ear plate.

[0003] The cable-beam anchoring structure of a reticulated hanger arch bridge is similar to the connection method between the stay cable and the main beam in a cable-stayed bridge. Currently, the commonly used cable-beam anchoring structure forms mainly include the following 4 types: ① anchor box type; ② ear plate type; ③ anchor pipe type; ④ anchor plate type. In the traditional anchor plate type structure, a groove is usually opened at the upper part of the anchor plate, and the inner part of the groove and the outer side of the anchor barrel are connected into one body by welding. The stay cable then passes through the anchor barrel and is anchored at the bottom of the anchor barrel. The lower part of the anchor plate is connected to the steel main beam by welding, so as to transfer the cable force to the main beam.

[0004] There are significant differences in the hanger arrangements between a reticulated hanger arch bridge and a parallel hanger arch bridge. In a parallel hanger arch bridge, all hangers on one side are in the same cable plane (the cable plane formed by the connection line of the intersection points of the arch axis and the arch beam). Due to the need for crossing, there are two cable planes for the hangers on one side of a reticulated hanger arch bridge (generally, the hangers with the same inclination direction are in one cable plane). It is difficult to meet the requirements of the double cable plane cross arrangement of a reticulated hanger arch bridge by using the arch rib hanger anchoring structure of a traditional parallel hanger arch bridge and the cable-beam anchoring structure of a cable-stayed bridge. In addition, compared with conventional parallel hangers, the anchoring points of the reticulated hangers on the upper part of the main arch are close to each other, and there are problems such as conflicts in the diaphragm positions at the cross-anchoring points. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a hanger anchoring structure suitable for a double cable plane of a reticulated hanger arch bridge to solve the deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0007] Provide a hanger anchoring structure suitable for a double cable plane of a reticulated hanger arch bridge. The reticulated hanger arch bridge includes a main beam and an arch rib connected by hangers. Among them, it includes a cable-arch anchoring structure located at the cable-arch anchoring part of the hanger and the arch rib, and a cable-beam anchoring structure located at the cable-beam anchoring part of the hanger and the main beam. The cable-arch anchoring structure adopts an ear plate type anchoring structure, and the cable-beam anchoring structure adopts an anchor plate type anchoring structure.

[0008] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein the arch rib includes an arch rib web, an arch rib bottom plate and an arch rib top plate, the cable-arch anchorage structure includes a hanger plate and a suspension point partition plate. The suspension point partition plate is arranged between the arch rib bottom plate, the arch rib web and the arch rib top plate. The hanger plate passes through the arch rib bottom plate along the direction of the arch rib web and vertically inserts into the suspension point partition plate. The hanger plates located on the inner and outer two different cable planes are symmetrically arranged on both sides of the vertical main arch center line respectively.

[0009] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein longitudinal strengthening plates of the arch rib are provided inside the arch rib top plate. The longitudinal strengthening plates of the arch rib are disconnected at the suspension point partition plate and are tightly welded to the suspension point partition plate.

[0010] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein manholes are reserved on the suspension point partition plate located inside the center line of the hanger.

[0011] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein there is a certain gap between the top of some of the suspension point partition plates and the arch rib top plate.

[0012] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein first transverse strengthening plates arranged parallel to the suspension point partition plate are provided on both end faces of the hanger plate, and second transverse strengthening plates arranged along the end face of the suspension point partition plate are provided on the hanger plate located outside the arch rib.

[0013] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein the main beam includes a main beam top plate, a main beam web and a main beam bottom plate, the cable-beam anchorage structure includes an anchor tension plate and an anchor pipe. The anchor tension plate is arranged transversely to the bridge and obliquely inserts into the main beam web after passing through the main beam top plate. A notch is opened at the exposed end of the anchor tension plate and the anchor pipe is provided. The hanger passes through the anchor pipe and is anchored at the bottom of the anchor pipe.

[0014] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein for the inner and outer two cable planes of the hanger, the anchor tension plate is set to be eccentrically arranged inside or outside relative to the main beam web.

[0015] As described in the hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge, wherein longitudinal strengthening plates of the main beam web are provided on the main beam web. The longitudinal strengthening plates of the main beam web are disconnected at the anchor tension plate.

[0016] As described in the hanger anchorage structure applicable to the double cable plane of the reticulated hanger arch bridge, wherein an anchor pipe end plate is provided at the upper end of the anchor pipe, first anchor tension strengthening plates are arranged on both sides of the notch of the anchor tension plate, the upper end of the first anchor tension strengthening plate is welded to the anchor pipe end plate, and the lower end is kept at a certain space from the main beam top plate. A second anchor tension strengthening plate is arranged at the lower part of the anchor tension plate, the end faces of the anchor tension plate and the second anchor tension strengthening plate are welded and connected, and the second anchor tension strengthening plate is welded and connected to the main beam web.

[0017] The beneficial effects of the technical solution of the present invention are as follows:

[0018] The structural construction is relatively simple. By offsetting the inner and outer sides of the arch hanger plate and the beam anchor tension plate, the conflict of cross-anchoring of the reticulated hangers is avoided; the number of plate members is small, the force transmission path is short, the force is evenly distributed, and the construction difficulty is low, improving the integrity and reliability of the force of the anchorage structure and accelerating the construction speed; the entire anchorage system is outside the arch rib and the main beam, facilitating later maintenance. Description of the Drawings

[0019] To further illustrate the above objects, structural features and effects of the present invention, the present invention will be described in detail below with reference to the drawings.

[0020] Figure 1 It is the overall layout drawing of the reticulated hanger arch bridge of the preferred embodiment of the present invention;

[0021] Figure 2 It is the partial enlarged drawing of the arch rib section of the preferred embodiment of the present invention;

[0022] Figure 3 It is the hanger structure drawing of the preferred embodiment of the present invention;

[0023] Figure 4 It is the layout drawing of the arch hanging points of the preferred embodiment of the present invention;

[0024] Figure 5 It is the layout drawing of the beam hanging points of the preferred embodiment of the present invention;

[0025] Figure 6 It is the schematic diagram of the cable-arch anchorage structure applicable to the outer hanging points of the preferred embodiment of the present invention;

[0026] Figure 7 It is the schematic diagram of the cable-arch anchorage structure applicable to the inner hanging points of the preferred embodiment of the present invention;

[0027] Figure 8 It is Figure 6 or Figure 7 the sectional view along the 1-1 direction in

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

[0029] Figure 10 Schematic diagram of the partition structure with non-full-height suspension points at the outer suspension points, which is a preferred embodiment of the present invention;

[0030] Figure 11 Schematic diagram of the cable-beam anchorage structure in one cable plane direction, which is a preferred embodiment of the present invention;

[0031] Figure 12 is Figure 11 Cross-sectional view along the 2-2 direction in (applicable to the outer suspension points);

[0032] Figure 13 Schematic diagram of the cable-beam anchorage structure in another cable plane direction, which is a preferred embodiment of the present invention;

[0033] Figure 14 is Figure 13 Cross-sectional view along the 2-2 direction in (applicable to the inner suspension points);

[0034] In the figure: 1, suspension rod; 2, main beam; 21, main beam top plate; 22, main beam web; 221, longitudinal stiffening plate of the main beam web; 3, arch rib; 31, arch rib web; 32, arch rib bottom plate; 33, arch rib top plate; 34, longitudinal stiffening plate of the arch rib; 4, lifting lug plate; 41, first transverse stiffening plate; 42, second transverse stiffening plate; 5, suspension point partition; 51, manhole; 6, anchor plate; 61, first anchor reinforcement plate; 62, second anchor reinforcement plate; 7, anchor pipe; 8, anchor pipe end plate. Detailed implementation manners

[0035] The terms "invention" and "the present invention" used in this specification are intended to broadly refer to all the subject matters 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 the meaning or scope of any of the following patent claims. In addition, this specification does not attempt to describe or limit the subject matter covered by any specific component, paragraph, statement, or claim of this application. The subject matter should be understood with reference to the entire specification, all the drawings, and any of the following claims. The present invention may have other embodiments and may be practiced or implemented in other ways. Moreover, it should be understood that the wording and terms used herein are for illustrative purposes and should not be considered limiting.

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

[0037] As used herein, the use of "comprising", "having", "including" and their variants means including the items listed hereinafter, their equivalents and additional items. Although directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc. may be referred to in the description of the drawings, for convenience, reference is made to the drawings. These directions are not intended to be literally accepted or limit the present invention in any form. In addition, 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, the present invention provides a hanger anchorage structure applicable to a double cable plane of a reticulated hanger arch bridge. The reticulated hanger arch bridge includes a main beam 2 and an arch rib 3 connected by a hanger 1. The hanger anchorage structure includes a cable-arch anchorage structure located at the cable-arch anchorage part between the hanger 1 and the arch rib 3 and a cable-beam anchorage structure located at the cable-beam anchorage part between the hanger 1 and the main beam 2. The cable-arch anchorage structure adopts an ear plate type anchorage structure, and the cable-beam anchorage structure adopts an anchor plate type anchorage structure.

[0039] 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 anchorage structure includes a hanger ear plate 4 and a suspension point partition plate 5. The suspension point partition plate 5 is arranged between the arch rib bottom plate 32, the arch rib web 31 and the arch rib top plate 33. The hanger ear plate 4 passes through the arch rib bottom plate 32 along the direction of the arch rib web 31 and is vertically inserted into the suspension point partition plate 5. The hanger ear plates 4 located on two different cable planes inside and outside are symmetrically arranged on both sides of the vertical main arch center line (the main arch center line 1 in the figure).

[0040] An arch rib longitudinal stiffening plate 34 is provided on the inner side of the arch rib top plate 33. The arch rib longitudinal stiffening plate 34 is disconnected at the suspension point partition plate 5 and is tightly welded to the suspension point partition plate 5.

[0041] A manhole 51 is reserved on the suspension point partition plate 5 inside the center line of the hanger 1.

[0042] See Figure 10 As shown, in order to avoid conflicts between partition plates at the cross-anchorage points, part of the suspension point partition plates 5 are not set to the full height, that is, there is a certain interval between the top of the suspension point partition plate 5 and the arch rib top plate 33.

[0043] First transverse stiffening plates 41 arranged parallel to the suspension point partition plate 5 are provided on both end faces of the hanger ear plate 4. Second transverse stiffening plates 42 arranged along the end face of the suspension point partition plate 5 are provided on the hanger ear plate 4 located outside the arch rib 3 to enhance the lateral stiffness of the hanger ear plate 4 and its overall performance with the arch rib 3, so that the force on the hanger 1 can be reliably transmitted to the arch rib 3.

[0044] A lifting point partition plate 5 is added at the anchoring position of the suspension rod. The inclination angle of the lifting point partition plate 5 is consistent with the inclination angle of the center line of the corresponding suspension rod 1. Notches are opened in the arch rib bottom plate 32 and the lifting point partition plate 5. The lifting lug plate 4 extends into the arch rib 3 from the notch of the arch rib bottom plate 32. The lifting lug plate 4 is welded to the lifting point partition plate 5 inside the arch rib 3 and is welded to the arch rib bottom plate 32 at the notched part of the arch rib bottom plate 32. Lifting lug holes are opened on the lifting lug plate 4 corresponding to each suspension rod 1 for anchoring the suspension rod 1.

[0045] The force transmission path of the cable-arch anchoring structure is: suspension rod 1 - lifting lug plate 4 - lifting point partition plate 5 - arch rib 3.

[0046] See Figures 11 to 14 As shown, the main beam 2 includes a main beam top plate 21, a main beam web 22 and a main beam bottom plate. The cable-beam anchoring structure includes an anchor tie plate 6 and an anchor pipe 7. The anchor tie plate 6 is arranged transversely to the bridge, that is, it is installed by rotating 90° relative to the lifting lug plate 4 on the arch. After passing through the main beam top plate 21, it is obliquely inserted into the main beam web 22. An anchor pipe 7 is provided at the exposed end of the anchor tie plate 6. The suspension rod 1 passes through the anchor pipe 7 and is anchored at the bottom of the anchor pipe 7.

[0047] For the two cable planes on the left and right sides of the suspension rod 1, the anchor tie plate 6 is set to be eccentrically arranged on the inner or outer side relative to the main beam web 22 to meet the double-layer suspension rod anchoring requirements.

[0048] The upper part of the anchor tie plate 6 is notched, and the inside of the notch is welded to the outside of the anchor pipe 7. Notches are opened in the main beam top plate 21 and the main beam web 22. The anchor tie plate 6 extends into the main beam 2 from the notch of the main beam top plate 21. At the notched part of the main beam top plate 21, the anchor tie plate 6 is welded to the main beam top plate 21. Inside the main beam 2, the anchor tie plate 6 is welded to the main beam web 22. A longitudinal stiffening plate 221 of the main beam web is provided on the main beam web 22, and the longitudinal stiffening plate 221 of the main beam web is disconnected at the anchor tie plate 6.

[0049] An anchor pipe end plate 8 is provided at the upper end of the anchor pipe 7. First anchor tie strengthening plates 61 are arranged on both sides of the notch of the anchor tie plate 6. The upper end of the first anchor tie strengthening plate 61 is welded to the anchor pipe end plate 8, and the lower end is kept at a certain space from the main beam top plate 21. The first anchor tie strengthening plate 61 can jointly bear the load with the anchor tie plate 6, which can not only enhance the stability of the anchor tie plate 6 but also make the force distribution of the component more reasonable. A second anchor tie strengthening plate 62 is provided at the lower part of the anchor tie plate 6. The end face of the anchor tie plate 6 is welded to the second anchor tie strengthening plate 62, and the second anchor tie strengthening plate 62 is welded to the main beam web 22 to enhance the overall performance of the anchoring structure and the main beam 2, so that the force on the suspension rod 1 can be reliably transmitted to the main beam 2.

[0050] The force transmission path of the cable-beam anchoring structure is: suspension rod 1 - anchor pipe 7 - anchor tie plate 6 - main beam 2.

[0051] The tensioning of the suspension rod 1 is carried out in a way that it is fixed on the arch and tensioned on the beam. The tensioning operation at the beam end of the suspension rod is implemented at the top of the anchor tie plate 6.

[0052] The present invention provides a hanger anchoring structure applicable to a reticulated hanger arch bridge. Different from the traditional anchoring structure of a parallel hanger arch bridge, the inner and outer eccentricities are set for the upper-arch ear plates and the beam upper anchor plates, realizing the cross-anchoring of the reticulated hangers.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A hanger anchorage structure applicable to a double cable plane of a reticulated hanger arch bridge. The reticulated hanger arch bridge comprises a main beam and an arch rib connected by hangers, and is characterized in that, It includes a cable-arch anchoring structure located at the cable-arch anchoring part of the suspension rod and the arch rib, and a cable-girder anchoring structure located at the cable-girder anchoring part of the suspension rod and the main girder. The cable-arch anchoring structure adopts an ear-plate type anchoring structure, and the cable-girder anchoring structure adopts an anchor tie-plate type anchoring structure.

2. The hanger anchorage structure applicable to the double cable planes of the grid hanger arch bridge according to claim 1, characterized in that The arch rib includes an arch rib web, an arch rib bottom plate and an arch rib top plate. The cable-arch anchoring structure includes a suspension ear plate and a suspension point partition plate. The suspension point partition plate is arranged between the arch rib bottom plate, the arch rib web and the arch rib top plate. The suspension ear plate passes through the arch rib bottom plate along the direction of the arch rib web and vertically inserts into the suspension point partition plate. The suspension ear plates located on the inner and outer different cable planes are symmetrically arranged on both sides of the vertical center line of the main arch.

3. The hanger anchorage structure applicable to the double cable planes of a latticed hanger arch bridge as described in claim 2, wherein An arch rib longitudinal stiffening plate is arranged inside the arch rib top plate. The arch rib longitudinal stiffening plate is disconnected at the suspension point partition plate and is tightly welded to the suspension point partition plate.

4. The hanger anchorage structure applicable to the double cable planes of the reticulated hanger arch bridge according to claim 2, characterized in that, A manhole is reserved on the suspension point partition plate inside the center line of the suspension rod.

5. The hanger anchorage structure applicable to the double cable plane of the reticulated hanger arch bridge as described in claim 2, characterized in that, There is a certain interval between the top of part of the suspension point partition plates and the arch rib top plate.

6. The hanger anchorage structure applicable to the double cable planes of a reticulated hanger arch bridge according to claim 2, characterized in that, First transverse stiffening plates arranged parallel to the suspension point partition plate are provided on both end faces of the suspension ear plate. Second transverse stiffening plates arranged along the end face of the suspension point partition plate are provided on the suspension ear plate located outside the arch rib.

7. The hanger anchorage structure applicable to the double cable planes of a latticed hanger arch bridge according to claim 1, wherein The main girder includes a main girder top plate, a main girder web and a main girder bottom plate. The cable-girder anchoring structure includes an anchor tie-plate and an anchor pipe. The anchor tie-plate is arranged transversely to the bridge and passes through the main girder top plate and then obliquely inserts into the main girder web. A notch is opened at the exposed end of the anchor tie-plate and the anchor pipe is provided. The suspension rod passes through the anchor pipe and is anchored at the bottom of the anchor pipe.

8. The hanger anchorage structure applicable to the double cable planes of a reticulated hanger arch bridge as claimed in claim 7, characterized in that, For the inner and outer two cable planes of the suspension rod, the anchor tie-plate is set to be eccentrically arranged inside or outside relative to the main girder web.

9. The hanger anchorage structure applicable to the double cable planes of a reticulated hanger arch bridge according to claim 7, characterized in that, Main girder web longitudinal stiffening plates are provided on the main girder web. The main girder web longitudinal stiffening plates are disconnected at the anchor tie-plate.

10. The hanger anchorage structure applicable to a double cable plane of a reticulated hanger arch bridge according to claim 7, characterized in that An anchor pipe end plate is provided at the upper end of the anchor pipe. First anchor tie strengthening plates are arranged on both sides of the notch of the anchor tie-plate. The upper ends of the first anchor tie strengthening plates are welded to the anchor pipe end plate, and the lower ends are kept at a certain space from the main girder top plate. Second anchor tie strengthening plates are provided at the lower part of the anchor tie-plate. The end faces of the anchor tie-plate and the second anchor tie strengthening plates are welded and connected. The second anchor tie strengthening plates are welded and connected to the main girder web.

Images