CN221029615U - Cable-stayed bridge cable anchoring system with inner and outer split short towers - Google Patents
Cable-stayed bridge cable anchoring system with inner and outer split short towers Download PDFInfo
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- CN221029615U CN221029615U CN202322595532.1U CN202322595532U CN221029615U CN 221029615 U CN221029615 U CN 221029615U CN 202322595532 U CN202322595532 U CN 202322595532U CN 221029615 U CN221029615 U CN 221029615U
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- 238000004873 anchoring Methods 0.000 title claims abstract description 80
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000006399 behavior Effects 0.000 description 3
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- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 230000002411 adverse Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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Abstract
The utility model relates to an inner and outer split type cable-stayed bridge cable beam anchoring system of a low tower, which comprises a transverse supporting structure and an anchoring system; the transverse supporting structure comprises an upper cross beam, an inclined web and a lower cross beam, wherein the upper cross beam is fixedly connected with the top plate bottom of the box girder, the lower cross beam is fixedly connected with the bottom plate bottom of the box girder, and the inclined web is arranged between the upper cross beam and the lower cross beam; the anchoring system comprises an upper anchoring device and a lower anchoring device, wherein the slightly long rope is anchored on the upper beam through being connected with the upper anchoring device, and the long rope is anchored on the lower beam through being connected with the lower anchoring device. The utility model has the advantages that: the structure has clear force transmission, effectively disperses the concentrated force born by the existing cable-stayed bridge anchoring structure of the short tower, reduces the shear stress and the compressive stress of the contact surface between the anchoring block and the bottom of the beam, and improves the safety and the durability of the structure; the horizontal component force of the stay cable is fully exerted, and the stay cable is uniformly distributed to the beam body through the cross beam, so that the stress of the beam body is optimized, and the use amount of the cable in the body is reduced.
Description
Technical Field
The utility model relates to the technical field of bridge structures, in particular to a cable-stayed bridge cable-beam anchoring system of an inner-outer split type short tower cable-stayed bridge.
Background
The huge pressure of the stay cable in the cable-stayed bridge acts on the cable-beam anchoring area in a concentrated way, so that the cable-beam anchoring area is stressed in a concentrated way and has a complex structure, and the cable-stayed bridge is a key component for controlling and designing the cable-stayed bridge with respect to the safety and durability of the bridge structure. By combining the mechanical behaviors of the short-tower cable-stayed bridge between the beam bridge and the cable-stayed bridge, the research of expert students at home and abroad shows that the stress of the cable-stayed bridge in the cable-beam anchoring area is concentrated, the tensile stress is very easy to be larger, the existing mode of arranging the anchor block at the lower side of the cantilever of the top plate has eccentricity relative to the centroid of the web plate, and the stress state of the whole structure of the bridge is influenced. In order to overcome the defects of the traditional anchoring mode, a plurality of scholars study the roof top anchoring structure of the low-tower cable-stayed bridge and apply the roof top anchoring structure in actual engineering, thereby obtaining good improvement effect.
However, the traditional anchoring mode or the roof top anchoring mode cannot fully exert the mechanical behavior characteristics of the short-tower cable-stayed bridge between the beam bridge and the cable-stayed bridge, the anchoring points are positioned at the top of the box girder, the cross section of the cable force of the stayed cable is uneven in force transmission, the roof bears a larger horizontal component of the cable force, the cable force is eccentric relative to the neutral axis of the box girder, so that the bottom plate bears larger pressure relative to the roof, a large number of bottom plate bundles are required to be configured for ensuring the stress of the middle bottom plate, and meanwhile, the anchoring structure is huge, the structure is complex and the stress is concentrated.
Disclosure of Invention
According to the defects of the prior art, the utility model provides an inner and outer split type low-tower cable-stayed bridge cable beam anchoring system, so that horizontal component forces of cable forces of the cable-stayed bridge respectively act on a top plate and a bottom plate of a box beam, the concrete bearing capacity of the section of the box beam and the horizontal component forces of a stay cable are fully exerted, the stress of a cable beam anchoring block is concentrated, and the stress of a beam body is optimized.
The utility model is realized by the following technical scheme:
An anchor system of cable-stayed bridge with inner and outer separated short towers is used for anchoring between stay cables and box girders of the short tower cable-stayed bridge, wherein the stay cables comprise slightly long cables and long cables, and are characterized in that: comprising a transverse support structure and an anchoring system;
The transverse supporting structure comprises an upper beam, an inclined web plate and a lower beam, wherein the upper beam is fixedly connected with the top plate bottom of the box beam, the lower beam is fixedly connected with the bottom plate bottom of the box beam, and the inclined web plate is arranged between the upper beam and the lower beam;
The anchoring system comprises an upper anchoring device and a lower anchoring device, the slightly long rope is anchored on the upper cross beam by being connected with the upper anchoring device, and the long rope is anchored on the lower cross beam by being connected with the lower anchoring device.
The upper anchoring device comprises an upper anchoring base plate and an upper anchoring tool, the slightly long rope is anchored to the upper cross beam through the upper anchoring tool, and the upper anchoring base plate is arranged between the upper anchoring tool and the upper cross beam.
The lower anchoring device comprises a lower anchoring base plate and a lower anchoring tool, the long rope is anchored to the lower cross beam through the lower anchoring tool, and the lower anchoring base plate is arranged between the lower anchoring tool and the lower cross beam.
The upper cross beam and the lower cross beam are perpendicular to the central line of the box girder, penetrate through the cross section of the box girder, and are respectively perpendicular to and fixedly connected with the side web plate and the middle web plate of the box girder.
The arrangement direction of the inclined web plate is parallel to the slightly long rope or the long rope.
The anchoring system comprises a protective sleeve which is sleeved on the periphery of the slightly long rope and the periphery of the long rope.
The inclined web is one of solid web type, truss type and frame type.
The utility model has the advantages that:
1) The structure has clear force transmission, effectively disperses the concentrated force born by the existing cable-stayed bridge anchoring structure of the short tower, reduces the shear stress and the compressive stress of the contact surface between the anchoring block and the bottom of the beam, and improves the safety and the durability of the structure;
2) The stress direction of the web plate is changed, and the cable force of the cable beam anchorage of the upper and lower cross beams is effectively coordinated and distributed in parallel with the inclined web plate of the stay cable, so that the adverse effect caused by cable force eccentricity under the condition of the straight web plate is remarkably improved;
3) The mechanical behavior characteristics of the low-tower cable-stayed bridge between the beam bridge and the cable-stayed bridge are adapted, the horizontal component force effect of the stay cable is fully exerted, the stay cable is uniformly distributed to the beam body through the cross beam, the stress of the beam body is optimized, and the use amount of cables in the body is reduced;
4) The structure is simple and reasonable, the construction is convenient, the prefabrication construction can be matched, and the device is suitable for popularization.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the box girder according to the present utility model;
fig. 3 is a diagram of an anchoring system according to the present utility model.
Detailed Description
The features of the utility model and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
As shown in fig. 1-3, each of the labels is shown as: the box girder 1, the transverse supporting structure 2, the anchoring system 3, the top plate 11, the side webs 12, the middle web 13, the bottom plate 14, the upper cross beam 21, the inclined web 22, the lower cross beam 23, the upper anchor backing plate 31, the upper anchor 32, the lower anchor backing plate 33, the lower anchor 34, the slightly long rope 35, the protective sleeve 36 and the long rope 37.
Examples: as shown in fig. 1 to 3, the cable-stayed bridge cable-beam anchoring system with a built-in box girder type short tower in this embodiment is used for realizing the anchoring between the box girder 1 and the stayed cable, wherein the stayed cable comprises a slightly long cable 35 and a long cable 37, which are different in that the slightly long cable 35 is anchored at the top plate position of the box girder 1 and the long cable 37 is anchored at the bottom plate position of the box girder 1, so that the length of the long cable 37 is slightly longer than that of the slightly long cable 35.
As shown in fig. 1 and 2, the box girder 1 in this embodiment is a box structure, and includes a top plate 11, a side web 12, a middle web 13 and a bottom plate 14, wherein two ends of the top plate 11 are respectively fixed with the bottom plate 14 through the side web 12, and the middle web 13 is disposed between the top plate 11 and the bottom plate 14 to divide the interior of the box body of the box girder 1 into two boxes.
As shown in connection with fig. 1 and 3, a transverse support structure 2 is provided inside the box chamber of the box girder 1. The transverse support structure 2 comprises an upper beam 21, a diagonal web 22 and a lower beam 23. Wherein, the upper beam 21 is arranged at the bottom of the top plate 11 and is poured into a whole, the lower beam 23 is arranged at the bottom of the bottom plate 14 and is poured into a whole, and the inclined web 22 is fixedly connected with the upper beam 21 and the lower beam 23 respectively.
As shown in connection with fig. 1 and 3, an anchoring system is provided between the lateral support structure and the longer cable 35 or the longer cable 37, which anchoring system comprises an upper anchoring means for anchoring the longer cable 35 with the upper cross member 21 and a lower anchoring means for anchoring the longer cable 37 with the lower cross member 23.
Specifically, the upper anchoring means includes an upper anchor pad 31 and an upper anchor 32, the upper anchor pad 31 and the upper anchor 32 transmitting pressure by contact, a slightly long cable 35 being anchored to the upper anchor 32, and transmitting pressure to the upper cross member 21 through the upper anchor pad 31. The lower anchoring device comprises a lower anchor backing plate 33 and a lower anchor 34, wherein the long rope 37 is anchored to the lower anchor 34, and the lower anchor backing plate 33 transmits the compressive stress generated by the long rope 37 to the lower cross beam 23.
At this time, the upper beam 21 is positioned at the bottom of the top plate, the lower beam 23 is positioned at the bottom of the bottom plate, the upper beam 21 bears the compressive stress transmitted by the upper anchor 32, and the lower beam 23 bears the compressive stress transmitted by the lower anchor pad 33; the surfaces of the upper beam 21 and the lower beam 23 perpendicular to the stay cables (slightly long cables 35 and 37) are used as bearing surfaces, the upper beam and the lower beam bear horizontal component force of the stay cables on one hand and uniformly transmit the horizontal component force to the cross section of the box girder 1, and the upper beam and the lower beam bear vertical component force of the stay cables on the other hand, the component force of the upper beam 21 is transmitted to the top plate 11 through the inclined web 22 to bear huge train live load together.
In this embodiment, as shown in fig. 3, a protective sleeve 36 is provided around the slightly longer cords 35 and 37 for corrosion protection.
The embodiment is implemented in specific manner: as shown in fig. 2, the upper beam 21 and the lower beam 23 are perpendicular to the central line of the box girder 1, wherein the cross section of the upper beam 21 penetrating through the box girder 1 is perpendicular to the side webs 12 and the middle web 13 respectively and is fixedly connected with each other, and the lower beam 23 is fixedly connected with each other, so that the connection performance between the upper beam and the lower beam and the box girder 1 is ensured, and the acting force of the stay cable can be further ensured to be effectively acted on the box girder 1.
The inclined web 22 is parallel to the longer cord 35 or cord 37 and leaves room for the anchoring system at the side web 12; the roof 11 is placed with a space for the anchoring system to pass through, and is connected in a sliding manner. At the same time, the bottom plate 14 and the lower cross beam 23 leave a space for the anchor system 3 to pass through and release the axial constraint.
The inclined web 22 is directly arranged on the surface of the bottom plate 14 and is poured with the bottom plate 14 into an integral structure so as to play a role in coordinating and distributing force transmission of the upper and lower cross beams; the inclined web 22 may be solid web, truss, frame.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the utility model as defined in the appended claims, and thus are not repeated herein.
Claims (7)
1. An anchor system of cable-stayed bridge with inner and outer separated short towers is used for anchoring between stay cables and box girders of the short tower cable-stayed bridge, wherein the stay cables comprise slightly long cables and long cables, and are characterized in that: comprising a transverse support structure and an anchoring system;
The transverse supporting structure comprises an upper beam, an inclined web plate and a lower beam, wherein the upper beam is fixedly connected with the top plate bottom of the box beam, the lower beam is fixedly connected with the bottom plate bottom of the box beam, and the inclined web plate is arranged between the upper beam and the lower beam;
The anchoring system comprises an upper anchoring device and a lower anchoring device, the slightly long rope is anchored on the upper cross beam by being connected with the upper anchoring device, and the long rope is anchored on the lower cross beam by being connected with the lower anchoring device.
2. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the upper anchoring device comprises an upper anchoring base plate and an upper anchoring tool, the slightly long rope is anchored to the upper cross beam through the upper anchoring tool, and the upper anchoring base plate is arranged between the upper anchoring tool and the upper cross beam.
3. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the lower anchoring device comprises a lower anchoring base plate and a lower anchoring tool, the long rope is anchored to the lower cross beam through the lower anchoring tool, and the lower anchoring base plate is arranged between the lower anchoring tool and the lower cross beam.
4. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the upper cross beam and the lower cross beam are perpendicular to the central line of the box girder, penetrate through the cross section of the box girder, and are respectively perpendicular to and fixedly connected with the side web plate and the middle web plate of the box girder.
5. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the arrangement direction of the inclined web plate is parallel to the slightly long rope or the long rope.
6. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the anchoring system comprises a protective sleeve which is sleeved on the periphery of the slightly long rope and the periphery of the long rope.
7. The cable-stayed bridge cable-stayed system with the inner and outer separated short towers according to claim 1, which is characterized in that: the inclined web is one of solid web type, truss type and frame type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595532.1U CN221029615U (en) | 2023-09-25 | 2023-09-25 | Cable-stayed bridge cable anchoring system with inner and outer split short towers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595532.1U CN221029615U (en) | 2023-09-25 | 2023-09-25 | Cable-stayed bridge cable anchoring system with inner and outer split short towers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221029615U true CN221029615U (en) | 2024-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322595532.1U Active CN221029615U (en) | 2023-09-25 | 2023-09-25 | Cable-stayed bridge cable anchoring system with inner and outer split short towers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221029615U (en) |
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2023
- 2023-09-25 CN CN202322595532.1U patent/CN221029615U/en active Active
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