CN112048986A - Inclined arch tower cable-stayed bridge - Google Patents
Inclined arch tower cable-stayed bridge Download PDFInfo
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- CN112048986A CN112048986A CN202010814344.1A CN202010814344A CN112048986A CN 112048986 A CN112048986 A CN 112048986A CN 202010814344 A CN202010814344 A CN 202010814344A CN 112048986 A CN112048986 A CN 112048986A
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- 238000000465 moulding Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 18
- 239000010959 steel Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000003796 beauty Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The application relates to an inclined arch tower cable-stayed bridge, which relates to the technical field of bridge engineering and comprises a bridge body, an inclined bridge tower, a cable-stayed structure and a thrust bracket, wherein the inclined bridge tower inclines towards one side of a longitudinal bridge of the bridge body; the structure of the stay cable is divided into an overturning side outer stay cable and an anti-overturning side outer stay cable; the horizontal component force of the anti-overturning lateral inclined stay cable along the bridge body is greater than that of the overturning lateral inclined stay cable along the bridge body; the thrust bracket is fixed on the bottom surface of the bridge body and abuts against the inclined bridge tower from the overturn-resisting side. The utility model provides an incline and encircle tower cable-stay bridge has the incline bridge tower to very big reduction the incline bridge tower because of the structural internal stress that the slope produced, satisfied the molding requirement of view bridge.
Description
Technical Field
The application relates to the technical field of bridge engineering, in particular to an inclined arch tower cable-stayed bridge.
Background
In the process of designing the bridge, along with the continuous improvement of aesthetic requirements of people, the modeling of the cable-stayed bridge tower is more and more abundant; the cable-stayed bridge with the inclined bridge tower gradually enters the visual field of people due to the unique structure and beautiful landscape.
However, in the actual construction process of the cable-stayed bridge of the inclined bridge tower, because the bridge tower is inclined, the upper part of the bridge tower tends to topple under the action of self weight, so that a huge bending moment is generated on the structure of the bridge tower, strong structural internal stress is formed inside the bridge tower, and the structure of the bridge tower is easily damaged; thereby causing construction difficulties, which cannot be solved by conventional bridge tower shapes, cross-sectional dimensions and construction methods.
Disclosure of Invention
The embodiment of the application provides an inclined arch tower cable-stayed bridge, which is provided with an inclined bridge tower, greatly reduces the structural internal stress of the inclined bridge tower caused by inclination, and meets the modeling requirement of a landscape bridge.
The application provides an inclined arch tower cable-stayed bridge, contains: a bridge body; an inclined pylon which is inclined to one side of the longitudinal bridge of the bridge body; the inclined stay cable structure comprises an overturning side outer stay cable and an anti-overturning side outer stay cable; the horizontal component force of the anti-overturning side outer stay cable along the bridge body is greater than that of the overturning side outer stay cable along the bridge body; and the thrust bracket is fixed on the bottom surface of the bridge body and abuts against the inclined bridge tower from the overturn-resisting side.
In some embodiments, the cable-stayed bridge further comprises a pier and a tower pier, and the bridge body is supported on the pier; the bottom end of the inclined bridge tower is fixed on the tower pier.
In some embodiments, the inclined pylon comprises two pylon limbs symmetrically arranged on two lateral sides of the bridge body; the bottom ends of the two tower limbs are fixed on the tower piers.
In some embodiments, the two tower limbs form a triangular structure along the transverse bridge direction and form an arch along the longitudinal bridge direction.
In some embodiments, the top ends and the bottom ends of the two tower limbs are fixedly connected through steel members; the steel member that connects two roof truss limb bottoms is located the below of bridge body, the thrust bracket supports from the anti-overturning side and holds on the steel member that is located bridge body 6 below.
In some embodiments, the two tower limbs comprise an upper arch ring and a lower arch ring, and feet of the upper arch ring and the lower arch ring are combined and connected on the tower piers; the top ends of the two upper arch rings are connected through a top cross beam, and the bottom ends of the two upper arch rings are connected through a bottom cross beam; the two lower arch rings are fixedly connected through the middle cross beam;
the bridge body is located above the lower arch ring, the bottom cross beam and the middle cross beam, and the thrust bracket abuts against the side face of the middle cross beam.
In some embodiments, a plurality of inner stay cables are arranged on the inner side of the upper portion of the upper arch ring, two ends of each inner stay cable are fixed in the same upper arch ring, and the inner stay cables are arranged in a crossed mode.
In some embodiments, both ends of the inner stay cable are fixed to the upper arch ring through ear plates, and the ear plates are hinged to the inner stay cable.
In some embodiments, a cable clamp is arranged at the intersection position of every two intersected inner stay cables, each cable clamp comprises two pipe bodies, the side walls of the two pipe bodies are fixed together, the axes of the two pipe bodies belong to a profile line, and one inner stay cable penetrates through each pipe body.
In some embodiments, one end of each of the overturning side outer stay cable and the anti-overturning side outer stay cable is provided with a beam edge steel anchor box for connecting the bridge body, and the other end of each of the overturning side outer stay cable and the anti-overturning side outer stay cable is provided with an arch steel anchor box for connecting the inclined bridge tower.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides an inclined arch tower cable-stayed bridge, which comprises an inclined bridge tower, and aims to overcome the inclination of the inclined bridge tower, reduce the bending moment of the inclined bridge tower and reduce the structural internal stress in the inclined bridge tower, the inclined bridge tower is righted by applying unbalanced cable force to the inclined bridge tower by arranging an overturning side outer cable-stayed cable and an overturning side outer cable-stayed cable on two sides of the inclined bridge tower (namely the cable force of the overturning side outer cable-stayed cable is larger than that of the overturning side outer cable-stayed cable), meanwhile, a thrust bracket is arranged on the bottom surface of a bridge body and is propped against the inclined bridge tower from the overturning side, the unbalanced cable force on the cable-stayed cable is transmitted to a concrete structure for supporting and fixing the inclined bridge tower through the bridge body and the thrust bracket, the structural internal stress in the inclined bridge tower is reduced, the self-balancing of the inclined arch tower is realized, the inclined arch tower cable-stayed bridge of the application reduces the inclination deformation of the inclined bridge tower, the internal force of the bridge tower structure is greatly reduced, the modeling requirement of the landscape bridge is met, the construction cost is reduced, and the combination of force and beauty is embodied.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of an oblique pylon cable-stayed bridge according to an embodiment of the present application.
Fig. 2 is a schematic view of an inclined bridge tower provided in an embodiment of the present application.
FIG. 3 is a schematic view of a thrust bracket and a middle cross beam according to an embodiment of the present disclosure.
Fig. 4 is a schematic connection diagram of the beam-side steel anchor box and the bridge body provided by the embodiment of the application.
Fig. 5 is a schematic view of the connection between the steel anchor box in the arch and the upper arch ring provided by the embodiment of the application.
Fig. 6 is a schematic connection diagram of inner stay cables according to an embodiment of the present application.
Fig. 7 is a cross-sectional view of a cord clip according to an embodiment of the present application.
Fig. 8 is an axial view of a cord clamp provided in accordance with an embodiment of the present application.
Reference numerals: 1. inclining the bridge tower; 2. a tower pier; 3. an inner stay cable; 4. an anti-overturning side outer stay cable; 5. overturning the outer stay cable on the side; 6. a bridge body; 7. a bridge pier; 8. an upper arch ring; 9. a lower arch ring; 10. a bottom cross member; 11. a top beam; 12. a middle cross beam; 13. thrust brackets; 14. an arch steel anchor box; 15. beam-side steel anchor boxes; 16. an ear plate; 17. a cable clamp; 100. and (4) tower limbs.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 1, the application discloses an embodiment of an inclined arch tower cable-stayed bridge, which comprises a bridge body 6, an inclined bridge tower 1, a cable-stayed structure and a thrust bracket 13, wherein the bridge body 6 is used for allowing vehicles to pass, the inclined bridge tower 1 inclines to one side of the longitudinal bridge of the bridge body 6, the inclined bridge tower 1 is structurally separated from the bridge body 6, and the inclined bridge tower and the bridge body are not directly connected.
The stay cable structure is divided into an overturning side outer stay cable 5 and an anti-overturning side outer stay cable 4. Two ends of the overturning side outer stay cable 5 are respectively connected with the inclined side of the inclined bridge tower 1 and the bridge body 6; and two ends of the anti-overturning side outer stay cable 4 are respectively connected with the other side of the inclined bridge tower 1 and the bridge body 6. The horizontal component force of the anti-overturning side outer stay cable 4 along the bridge body 6 is larger than the horizontal component force of the overturning side outer stay cable 5 along the bridge body 6, and the structural internal stress generated by the inclination of the inclined bridge tower 1 is offset by the unbalanced horizontal force of the stay cables.
And the horizontal force of the overturning side outer stay cable 5 and the anti-overturning side outer stay cable 4 is transmitted to the bridge body 6 to enable the bridge body 6 to slide towards the overturning side, in order to prevent the bridge body 6 from sliding, a thrust bracket 13 is fixedly arranged on the bottom surface of the bridge body 6, the thrust bracket 13 is supported on the structure of the inclined bridge tower 1 from the anti-overturning side to prevent the bridge body 6 from sliding, and finally the horizontal force of the unbalanced overturning side outer stay cable 5 and the anti-overturning side outer stay cable 4 is transmitted to the concrete structure for supporting and fixing the inclined bridge tower 1.
The utility model provides a cable-stay bridge has reduced the deformation of empting of inclined bridge tower, very big reduction the moment of flexure of inclined bridge tower, has not only satisfied the view molding requirement of bridge, has still reduced engineering cost, has embodied the combination of power and beauty.
Specifically, the cable-stayed bridge further comprises a pier 7 and a tower pier 2, the bridge body 6 is supported on the pier 7, and two or more piers 7 can be provided; the bottom end of the inclined bridge tower 1 is fixed on the tower pier 2. The unbalanced horizontal force of the overturning side outer stay cable 5 and the anti-overturning side outer stay cable 4 is finally transmitted to the tower pier 2, so that the self balance of the whole structure of the cable-stayed bridge is realized.
As shown in fig. 2, the inclined pylon 1 comprises two pylon legs 100, the two pylon legs 100 are symmetrically arranged at two sides of the transverse direction of the bridge body 6, and the two pylon legs 100 are inclined towards one side of the longitudinal direction of the bridge body 6; the two tower legs 100 are not directly connected with the bridge body 6; the bottom ends of the two tower legs 100 are fixed on the tower pier 2.
In one embodiment, two tower limbs 100 are triangular in the transverse direction and arched in the longitudinal direction. The arched inclined bridge tower 1 is stressed more uniformly, and the shape is more attractive; each tower leg 100 is provided with two mounting feet, and each mounting foot is correspondingly mounted on one tower pier 2; two tower legs 100 have four mounting feet and are correspondingly mounted on four piers 2.
Specifically, the top ends and the bottom ends of the two tower limbs 100 are fixedly connected through steel members; the steel member connecting the bottom ends of the two tower limbs 100 is positioned below the bridge body 6, and the thrust bracket 13 is abutted against the steel member positioned below the bridge body 6 from the anti-overturning side.
In one embodiment, the two tower legs 100 comprise an upper arch ring 8 and a lower arch ring 9, wherein the upper arch ring 8 is a circular arc with a larger upward projection, and the lower arch ring 9 is a circular arc with a smaller upward projection; and the upper arch ring 8 and the lower arch ring 9 of each tower limb 100 are positioned on the same plane. The footings of the upper arch ring 8 and the lower arch ring 9 are combined into one mounting foot and connected to the tower pier 2. The top ends of the two upper arch rings 8 are fixedly connected through a top cross beam 11, and the bottom ends of the two upper arch rings 8 are connected through a bottom cross beam 10; the number of the bottom cross beams 10 is two, two ends of each bottom cross beam 10 are respectively connected with an upper arch ring 8, and the connection position is close to the bottom foot of the upper arch ring 8. The two lower arches 9 are fixedly connected by a central transverse beam 12. In particular, the central crosspiece 12 is located at both ends of the two lower arches 9. The bridge body 6 is positioned above the lower arch ring 9, the bottom cross beam 10 and the middle cross beam 12, and the thrust bracket 13 abuts against the side surface of the middle cross beam 12 (see figure 3).
Preferably, thrust brackets 13 are arranged on two sides of the middle cross beam 12, so that the bridge body 6 can be prevented from sliding towards two sides along the longitudinal bridge.
In one embodiment, the inner side of the upper part of the upper arch ring 8 is provided with a plurality of inner stay cables 3, the integrity of the upper arch ring 8 can be further ensured by the inner stay cables 3, the two ends of each inner stay cable 3 are fixed in the same upper arch ring 8, and the inner stay cables 3 are arranged in a crossed manner to form a net shape, so that the integrity of the upper arch ring 8 is stronger, and the structure is more stable.
As shown in fig. 5, ear plates 16 are disposed at both ends of the inner stay cable 3, the inner stay cable 3 is fixed to the upper arch ring 8 through the ear plates 16, one end of each ear plate 16 is fixedly connected to the upper arch ring 8, and the other end is hinged to the inner stay cable 3. The lug plate 16 is additionally arranged between the inner stay cable 3 and the upper arch ring 8, so that the inner stay cable 3 can be tensioned more fully, and the inner stay cable 3 is convenient to install and maintain.
As shown in fig. 6, 7 and 8, specifically, in the inner oblique cables 3 arranged in a crossing manner, a cable clamp 17 is arranged at the crossing position of every two crossing inner oblique cables 3, each cable clamp 17 comprises two pipe bodies, the side walls of the two pipe bodies are fixed together, the axes of the two pipe bodies belong to different planes, and one inner oblique cable 3 penetrates through each pipe body; through setting up cable clamp 17 can stagger two crossing interior suspension cable 3, mutual independence each other, avoids interior suspension cable 3 wearing and tearing each other, has strengthened interior suspension cable 3's life.
As shown in fig. 4 and 5, one end of each of the overturning side outer stay cable 5 and the anti-overturning side outer stay cable 4 is provided with a beam edge steel anchor box 15 for connecting the bridge body 6, and the other end is provided with an arch inner steel anchor box 14 for connecting the inclined bridge tower 1; namely, the two ends of the overturn side outer stay cable 5 are respectively provided with a beam edge steel anchor box 15 and an arch inner steel anchor box 14, and the same is true for the overturn side outer stay cable 4. The connection is carried out through the beam edge steel anchor boxes 15 and the arch inner steel anchor boxes 14, and compared with the direct connection of the overturning side outer stay cables 5 and the anti-overturning side outer stay cables 4, the connection is firmer, and the stress is firmer.
The inclined arch pylon cable-stayed bridge comprises an inclined pylon 1, wherein in order to overcome the inclination of the inclined pylon 1, reduce the bending moment of the inclined pylon 1 and reduce the internal structural stress inside the inclined pylon 1, the inclined pylon 1 is straightened by arranging an overturning side outer stay cable 5 and an overturning side outer stay cable 4 at two sides of the inclined pylon 1 and applying unbalanced cable force to the inclined pylon 1 (namely, the cable force of the overturning side outer stay cable 4 is greater than that of the overturning side outer stay cable 5); meanwhile, the thrust bracket 13 is arranged on the bottom surface of the bridge body 6, the thrust bracket 13 abuts against the inclined bridge tower 1 from the anti-overturning side, and unbalanced cable force on the stay cable is transmitted to the tower pier 2 through the bridge body 6 and the thrust bracket 13, so that the internal structural stress of the inclined bridge tower 1 is greatly reduced, and the self-balance of the inclined arch tower cable-stayed bridge is realized; the inclined arch tower cable-stayed bridge reduces the toppling deformation of the inclined bridge tower, meets the modeling requirement of a landscape bridge, reduces the construction cost, and embodies the combination of strength and beauty.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An oblique pylon cable-stayed bridge, comprising:
a bridge body (6);
an inclined pylon (1) which is inclined to one side of the longitudinal bridge of the bridge body (6);
the inclined stay cable structure is divided into an overturning side outer stay cable (5) and an anti-overturning side outer stay cable (4); the horizontal component force of the anti-overturning side outer stay cable (4) along the bridge body (6) is greater than the horizontal component force of the overturning side outer stay cable (5) along the bridge body (6);
and the thrust bracket (13) is fixed on the bottom surface of the bridge body (6) and abuts against the inclined bridge tower (1) from the overturn-resisting side.
2. A leaning pylon cable-stayed bridge as defined in claim 1, wherein: the cable-stayed bridge also comprises a pier (7) and a tower pier (2), and the bridge body (6) is supported on the pier (7); the bottom end of the inclined bridge tower (1) is fixed on the tower pier (2).
3. A leaning pylon cable-stayed bridge as defined in claim 2, wherein: the inclined bridge tower (1) comprises two tower limbs (100), and the two tower limbs (100) are symmetrically arranged at two sides of the bridge body (6) in the transverse bridge direction; the bottom ends of the two tower limbs (100) are fixed on the tower piers (2).
4. A leaning pylon cable-stayed bridge according to claim 3, wherein: the two tower limbs (100) form a triangular structure along the transverse bridge direction and form an arch along the longitudinal bridge direction.
5. The leaning pylon cable-stayed bridge of claim 4, wherein: the top ends and the bottom ends of the two tower limbs (100) are fixedly connected through steel members; the steel member connecting the bottom ends of the two tower limbs (100) is located below the bridge body (6), and the thrust bracket (13) abuts against the steel member located below the bridge body 6 from the overturn resisting side.
6. A leaning pylon cable-stayed bridge according to claim 3, wherein: the two tower limbs (100) comprise an upper arch ring (8) and a lower arch ring (9), and the bottom feet of the upper arch ring (8) and the lower arch ring (9) are connected to the tower pier (2) in a combined manner; the top ends of the two upper arch rings (8) are connected through a top cross beam (11), and the bottom ends of the two upper arch rings are connected through a bottom cross beam (10); the two lower arch rings (9) are fixedly connected through a middle cross beam (12);
the bridge body (6) is located above the lower arch ring (9), the bottom cross beam (10) and the middle cross beam (12), and the thrust bracket (13) abuts against the side face of the middle cross beam (12).
7. The leaning pylon cable-stayed bridge of claim 6, wherein: the inner side of the upper part of the upper arch ring (8) is provided with a plurality of inner stay cables (3), the two ends of each inner stay cable (3) are fixed in the same upper arch ring (8), and the inner stay cables (3) are arranged in a crossed manner.
8. The leaning pylon cable-stayed bridge of claim 7, wherein: the two ends of the inner stay cable (3) are fixed on the upper arch ring (8) through ear plates (16), and the ear plates (16) are hinged with the inner stay cable (3).
9. The leaning pylon cable-stayed bridge of claim 7, wherein: set up one cable clamp (17) in the crossing position of per two crossing interior suspension cables (3), every cable clamp (17) contain two bodys, the lateral wall of two bodys is together fixed, and the axis of two bodys belongs to the different facial line, wears to establish one interior suspension cable (3) in every body.
10. A leaning pylon cable-stayed bridge according to any one of claims 1 to 9, wherein: one end of each of the overturning side outer stay cable (5) and the anti-overturning side outer stay cable (4) is provided with a beam edge steel anchor box (15) used for being connected with the bridge body (6), and the other end of each of the overturning side outer stay cables is provided with an arch inner steel anchor box (14) used for being connected with the inclined bridge tower (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010814344.1A CN112048986A (en) | 2020-08-13 | 2020-08-13 | Inclined arch tower cable-stayed bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010814344.1A CN112048986A (en) | 2020-08-13 | 2020-08-13 | Inclined arch tower cable-stayed bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960423A (en) * | 2022-06-30 | 2022-08-30 | 中铁大桥勘测设计院集团有限公司 | Spatial limb-divided cable-stayed bridge steel tower and cable-stayed bridge |
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