CN111501522B - Seagull type space back cable stayed bridge system - Google Patents
Seagull type space back cable stayed bridge system Download PDFInfo
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- CN111501522B CN111501522B CN202010344535.6A CN202010344535A CN111501522B CN 111501522 B CN111501522 B CN 111501522B CN 202010344535 A CN202010344535 A CN 202010344535A CN 111501522 B CN111501522 B CN 111501522B
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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 a gull type space back cable stayed bridge system, which comprises a bridge tower, a stayed cable, a main beam, a side pier, a middle pier, a back cable and a stay cable, and relates to the technical field of bridge engineering, wherein the bridge tower is designed into an arc shape, two ends of the back cable are respectively anchored at the top of the bridge tower, one end of the stay cable is connected with the back cable, and the other end of the stay cable is anchored at the root of the bridge tower, so that the bridge tower, the back cable and the stay cable form a three-dimensional frame structure, the space rigidity of the stayed bridge can be improved, the action of dead load and live load can be favorably resisted, the back cable can be tensioned at the top of the bridge tower for cable force adjustment, the stay cable can be tensioned at the root of the bridge tower for cable force adjustment, the stress state of the bridge tower under the action of dead weight and the stayed cable tension can be improved, the line shape of the bridge tower can be reasonably close to an axis, the bending moment borne by the root of the bridge tower is reduced, namely the cross section size at the bottom of the bridge tower does not need to be designed to be very large, therefore, the cable-stayed bridge can enhance the spanning capability of the cable-stayed bridge, reduce the loss and the cost of materials and enhance the aesthetic feeling of the bridge.
Description
Technical Field
The application relates to the technical field of bridge engineering, in particular to a gull type space back cable stayed-cable bridge system.
Background
Cable-stayed bridges are bridge structures consisting of bridge towers, main beams and stay cables, and are generally classified into double-tower cable-stayed bridges, single-tower cable-stayed bridges, short-tower cable-stayed bridges, backless cable-stayed bridges and the like. The cable-stayed bridge has a high-rise bridge tower, so that strong visual impact force is provided for people; the thin main beam can support the strong force sense of the stay cable; the flexible guy cables and the structural arrangement form give designers a wide imagination space, and thus are widely adopted in urban landscape bridges.
With the progress of society and the development of urban construction, urban bridges are no longer emphasized on the traffic functions, but tend to be practical and beautiful, and the creation of bridge designs with good economy and aesthetic feeling has very important significance.
In the related technology, most of the pylons of the large-span cable-stayed bridge are designed into a slender and high-rise single column shape, an H shape or a diamond shape, so that a strong visual impact force is provided for people, however, for medium and small-span cable-stayed bridges, the pylons are short in height, and the bridge landscape is difficult to be improved through the design of the conventional pylons, so that in order to pursue novelty, some cable-stayed bridge pylons adopt a complex space model, but the structural stress of the cable-stayed bridge presents the characteristic of bending, shearing, twisting and coupling stress, the problems of complex stress, indirect force transmission and low material utilization efficiency exist, and in order to bear the complex stress of the pylon, the cross section size of the pylon is often designed to be very large, but the pylon with a large cross section size not only causes the problems of large material consumption, high manufacturing cost and the like, but also can make the aesthetic feeling of the cable-stayed bridge discount. In addition, the bridge tower of the cable-stayed bridge without the back cable is generally designed to be inclined, the positive bending moment of the main beam is balanced by the overturning moment generated by the inclination of the bridge tower, the visual impact and the aesthetic feeling are very high, but the problems of complex consolidation stress of the tower, the beam and the pier and uneven relative distribution of the cable force of the stay cable exist, and the spanning capability of the bridge is restricted to a certain extent.
Disclosure of Invention
The embodiment of the application provides a gull-type spatial backstay cable-stayed bridge system, which aims to solve the problems of large material loss, high cost and weak crossing capability caused by the purpose of enhancing the bending moment resistance of a cable-stayed bridge in the related art.
The first aspect provides a seagull formula space backstay cable-stay bridge system, including pylon, suspension cable, girder, side mound and middle mound, the pylon bottom passes girder and middle mound fixed connection, the girder is located the side mound with on the middle mound, suspension cable one end anchor in on the pylon, the other end anchor in on the girder, its characterized in that: the bridge tower is the arc shape, cable-stay bridge system still includes:
two ends of the back cable are respectively anchored at the top of the bridge tower, and the cable force of the back cable is adjusted, so that the bridge tower is mainly stressed under the action of self weight;
and one end of the inhaul cable is connected with the back cable, and the other end of the inhaul cable is anchored at the root of the bridge tower.
In some embodiments, the transverse bridge of the bridge tower is folded in an A shape.
The cable-stayed bridge system further comprises: the connecting piece, the cable passes through the connecting piece with the back cable is connected.
The connecting piece is a cable clamp.
The bridge tower is of a steel structure.
The main beam is of a steel structure.
The main beam is of a fish-bellied steel box girder structure.
The stay cables on the same side are arranged in parallel.
The beneficial effect that technical scheme that this application provided brought includes: the spanning capability of the cable-stayed bridge can be enhanced, the loss of materials is reduced, and the cost is reduced.
The embodiment of the application provides a gull-type spatial back cable stayed bridge system, because two ends of a back cable are respectively anchored at the top of a bridge tower, one end of the guy cable is connected with the back cable, and the other end is anchored at the root of the bridge tower, so that the bridge tower, the back cable and the guy cable form a three-dimensional frame structure, it can improve the space rigidity of the cable-stayed bridge, is beneficial to resisting the action of dead load and live load, and the back cable can be tensioned at the tower top for adjusting the cable force, the guy cable can be tensioned at the root of the bridge tower to adjust the cable force so as to improve the stress state of the bridge tower under the action of the dead weight and the tension of the stay cable, thereby leading the bridge tower to be mainly stressed under the action of self weight and have reasonable arch axis, reducing the bending moment applied to the root of the bridge tower, the cross section of the tower bottom does not need to be designed to be very large, so that the loss of materials is reduced, the cost is reduced, and the spanning capability of the cable-stayed bridge is enhanced; in addition, the bridge tower is designed to be arc-shaped, so that the bridge tower is mainly stressed under the constant load effect, and the bridge has aesthetic feeling, therefore, the spanning capability of the cable-stayed bridge can be enhanced, the loss and the cost of materials are reduced, and the aesthetic feeling of the bridge can be enhanced.
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 structural diagram of a gull-type spatial backslash cable-stayed bridge system according to an embodiment of the present disclosure;
fig. 2 is a schematic cross-sectional structure view of a gull-type spatial back cable-stayed bridge system according to an embodiment of the present disclosure;
fig. 3 is a schematic perspective view of a gull-type spatial back cable-stayed bridge system according to an embodiment of the present disclosure.
In the figure: 1-bridge tower, 11-tower top steel anchor box, 12-tower root steel anchor box, 2-stay cable, 3-main beam, 4-side pier, 5-middle pier, 6-back cable, 7-stay cable and 8-connecting piece.
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.
The embodiment of the application provides a gull-type spatial backstay cable-stayed bridge system, which can solve the problems of large material loss, high cost and weak crossing capability caused by the improvement of bending moment resistance of a cable-stayed bridge in the related art.
Fig. 1 is a schematic structural diagram of a gull-type spatial back-cable-stayed bridge system, which includes a bridge tower 1, a stay cable 2, a main beam 3, side piers 4, a middle pier 5, a back cable 6 and a stay cable 7, wherein the bottom of the bridge tower 1 penetrates through the main beam 3 and is fixedly connected with the middle pier 5, the bridge tower 1 is in a single-tower form, and the bridge tower 1 and the middle pier 5 form a tower-beam consolidation system, so that the overall rigidity of the structure can be improved, wherein the bridge tower 1 is arc-shaped, so that the bridge tower can be mainly stressed under the constant load action, and the bridge has aesthetic feeling; the main beam 3 is arranged on the side pier 4 and the middle pier 5, one end of the stay cable 2 is anchored on the bridge tower, and the other end is anchored on the main beam 3; referring to fig. 2, two ends of a back cable 6 are respectively anchored on a tower top steel anchor box 11 at the top of the bridge tower 1, and the bridge tower 1 is mainly stressed under the action of self weight and is close to a reasonable arch axis by adjusting the cable force of the back cable 6; one end of the stay cable 7 is connected with the back cable 6 through the connecting piece 8, the connecting piece 8 is preferably a cable clamp, and the other end is anchored on a tower root steel anchor box 12 at the root of the bridge tower 1, as shown in fig. 3, the bridge tower 1, the back cable 6 and the stay cable 7 form a three-dimensional frame structure, the space rigidity of the cable-stayed bridge can be improved, the functions of dead load and live load can be resisted, the back cable 6 can be tensioned at the tower top for cable force adjustment, the stay cable 7 can be tensioned at the root of the bridge tower 1 for cable force adjustment, the stress state of the bridge tower 1 under the action of self weight and the tension of the stay cable 2 is improved, the stress of the bridge tower 1 is mainly axial pressure, namely the bridge tower 1 has a reasonable arch axis.
The materials, specific size, spacing and inclination angle of the stay cables 2, the back cables 6 and the stay cables 7 can be adjusted according to actual conditions; the linear and section sizes of the bridge tower 1 and the main beam 3 can be selected according to the design requirements; the tension of the stay cables 2, the back cables 6 and the stay cables 7 can be determined according to design preference, and the tension should enable the internal force of the tower body of the bridge tower 1 to mainly bear the axial force under the tension action of the stay cables 2, the back cables 6 and the stay cables 7, so that the bending moment of the root of the main tower is reduced as much as possible.
This cable-stayed bridge system is many times hyperstatic structure, and the space frame structure that vertical load comprises pylon 1, back rope 6 and cable 7 shares with girder 3 jointly, and the proportion of sharing of load distributes according to the rigidity of space frame structure and girder 3 among the actual engineering, and the big party of rigidity bears bigger vertical load, and superstructure's dead load and live load accessible girder 3 and pylon 1 transmit to on side mound 4 and the middle mound 5.
The concrete implementation process of the cable-stayed bridge system is as follows: firstly, constructing side piers 4 and a middle pier 5, and then constructing a main beam 3 by a support method; after the construction of the main beam 3 is completed, erecting a support on the main beam 3 and constructing the bridge tower 1 by stages; after the bridge tower 1 is assembled, tensioning a back cable 6 and a stay cable 7; dismantling the support on the main beam 3 and tensioning the stay cable 2; dismantling the support under the main beam 3 to complete the system conversion; and applying a second-stage dead load, and adjusting the cable forces of the stay cable 2, the back cable 6 and the stay cable 7 according to requirements so as to enable the structure to be in the optimal stress state.
Preferably, the bridge tower 1 is transversely closed to form an A shape, so that the overall rigidity of the bridge structure can be improved, as shown in fig. 3, the bridge tower 1 is in a posture of flying by seagulls along the bridge direction and is arranged in a diamond shape under the overlooking, the bridge tower 1 is novel in shape, the shapes of the bridge tower at different visual angles are different, the aesthetic feeling of dynamic and static combination is realized, and the flexibility of the bridge is improved.
Preferably, the bridge tower 1 and the girder 3 all adopt the steel construction design to reduce the design size of bridge tower 1 and girder 3, and reduce the structure dead weight, thereby reduce material loss and construction cost, and make girder 3 more slender, bridge tower 1 is more gentle, strengthens the artistic conception of seagull soaring.
Preferably, the main beam 3 is a fish belly type steel box girder structure with equal height, the two ends of the main beam 3 are supported on the piers 4 and the middle piers 5 on the two sides, the height of the central beam can be changed according to actual conditions, and the central beam height of the main beam 3 is increased, so that the main beam 3 is not heavy visually, the size of the arc-shaped bridge tower 1 is reduced, the aesthetic feeling of integral fluctuation and jump of the bridge is enhanced, and the fish belly type steel box girder can also improve the view under the bridge.
Preferably, the stay cables 2 parallel arrangement of homonymy not only can play the elastic support effect to girder 3, and parallel arrangement's stay cable 2 can make up into the molding like a harp with the bridge tower 1 of camber line shape, and arranges with the mode of harp shape, can give a rhythm sense, reinforcing people's vision enjoyment.
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 (7)
1. The utility model provides a seagull formula space backstay cable-stay bridge system, includes pylon (1), suspension cable (2), girder (3), side mound (4) and well mound (5), girder (3) and well mound (5) fixed connection are passed to pylon (1) bottom, girder (3) are located side mound (4) with on well mound (5), suspension cable (2) one end anchor in on pylon (1), the other end anchor in on girder (3), its characterized in that: bridge tower (1) is the V font along the bridge to, the both sides limit of V font is the camber line and deviates from each other, cable-stay bridge system still includes:
the two ends of the back cable (6) are respectively anchored at the two top ends of the bridge tower (1), and the cable force of the back cable (6) is adjusted, so that the bridge tower (1) is mainly stressed under the action of self weight;
one end of the connecting piece (8) is connected with the middle part of the back cable (6);
and one end of the inhaul cable (7) is connected with the connecting piece (8), and the other end of the inhaul cable (7) is anchored at the root of the bridge tower (1).
2. The gull-type spatial backslash cable-stayed bridge system of claim 1, wherein: the bridge tower (1) is transversely folded into an A shape.
3. The gull-type spatial backslash cable-stayed bridge system of claim 1, wherein: the connecting piece (8) is a cable clamp.
4. The gull-type spatial backslash cable-stayed bridge system of claim 1, wherein: the bridge tower (1) is of a steel structure.
5. The gull-type spatial backslash cable-stayed bridge system of claim 1, wherein: the main beam (3) is of a steel structure.
6. The gull-type spatial backstay cable-stayed bridge system of claim 5, wherein: the main beam (3) is of a fish belly type steel box girder structure.
7. The gull-type spatial backslash cable-stayed bridge system of claim 1, wherein: the stay cables (2) on the same side are arranged in parallel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010344535.6A CN111501522B (en) | 2020-04-27 | 2020-04-27 | Seagull type space back cable stayed bridge system |
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| CN202010344535.6A CN111501522B (en) | 2020-04-27 | 2020-04-27 | Seagull type space back cable stayed bridge system |
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| CN111501522A CN111501522A (en) | 2020-08-07 |
| CN111501522B true CN111501522B (en) | 2021-09-24 |
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| CN112281623A (en) * | 2020-10-30 | 2021-01-29 | 上海市政工程设计研究总院（集团）有限公司 | Longitudinal V-shaped cable tower cable-stayed bridge |
| CN113789851B (en) * | 2021-09-26 | 2022-09-13 | 浙大城市学院 | Arc-shaped cantilever truss stay cable bearing combined long-span corridor structure and construction method |
| CN114855587B (en) * | 2022-05-16 | 2024-01-30 | 中铁大桥勘测设计院集团有限公司 | Cable-stayed bridge structure of longitudinal self-balancing system and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003213619A (en) * | 2002-01-23 | 2003-07-30 | Mitsubishi Heavy Ind Ltd | Foundation superstructure integral bridge |
| CN202000249U (en) * | 2011-03-14 | 2011-10-05 | 王海斌 | Building bridge |
| CN202064275U (en) * | 2011-04-29 | 2011-12-07 | 中铁五局集团建筑工程有限责任公司 | Double-stayed-steel arch tower in-situ cantilever split joint structure |
| CN102644241B (en) * | 2012-04-05 | 2014-07-30 | 广东省长大公路工程有限公司 | Space curved cable bent tower of cable-stayed bridge |
| CN206986703U (en) * | 2017-04-06 | 2018-02-09 | 中铁四局集团第二工程有限公司 | A kind of tower cable-stayed bridge of diclinic with high stability |
| CN108342975A (en) * | 2018-04-04 | 2018-07-31 | 中铁第四勘察设计院集团有限公司 | The arch of crossbeam holds Cable-Stayed Bridge Structure between a kind of no tower |
| CN108385506B (en) * | 2018-05-09 | 2022-11-04 | 广东省交通规划设计研究院集团股份有限公司 | Cable-stayed bridge of cable tower and inclined tower |
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