CN220335683U - Open bridge of cable-stayed-suspension cable-arch combined system - Google Patents
Open bridge of cable-stayed-suspension cable-arch combined system Download PDFInfo
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- CN220335683U CN220335683U CN202320875129.1U CN202320875129U CN220335683U CN 220335683 U CN220335683 U CN 220335683U CN 202320875129 U CN202320875129 U CN 202320875129U CN 220335683 U CN220335683 U CN 220335683U
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- 239000000725 suspension Substances 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Abstract
The utility model belongs to the technical field of open bridge design and construction in bridge engineering, and provides an open bridge of a cable-stayed-suspension cable-arch combined system, wherein the structure is divided into two spans, and a main span consists of a main girder, an arch rib, a tie-bar arch suspender, a cable tower, a main cable, a suspension bridge suspender, a middle pier and an edge pier, and is a combined structure of an inclined suspender tie-bar arch and a suspension bridge; the side span consists of a main girder, a cable tower, a stay cable, a middle pier and side piers, and is a cable-stayed bridge structure. In a bridge forming state, the main span inclined suspender tied arch bridge and the side span cable-stayed bridge mainly bear the dead weight of the bridge and the traffic load on the bridge deck; the suspension bridge structure only bears a small amount of dead weight of the structure and traffic load. When in an open state, the supports of the two side piers sink, and the whole upper structure is supported by the middle pier to form a double-cantilever structure taking the middle pier as a fulcrum. As the main beam ends at the two side piers sink, the main cable is simultaneously tensioned with the stay cables and the cable forces at the cable towers are maintained substantially balanced.
Description
Technical Field
The utility model relates to the technical field of open bridge design and construction in bridge engineering, in particular to an open bridge of a cable-stayed-suspension cable-arch combined system.
Background
Common opening modes of the opening bridge are as follows: in the forms of vertical lifting, vertical turning, horizontal longitudinal opening, etc., "Kong Xu, zhou, cheng Chaohui, etc.. Malaysia denjia's opening bridge [ J ]. Lifting and transporting machinery, 2022, no.598 (02): 51-55.", the disadvantage of the vertical lifting, vertical turning, and horizontal longitudinal opening modes is that it is difficult to achieve a large span; ping Zhuaikai the bridge opening can meet the requirement of larger span, but as described in "Chen Cuili, chen Juanting. Nanjing Jiang Ning square Qinhuai river bridge opening scheme research [ J ]. Highway and steam transportation, 2014, no.165 (06): 158-160 ], the bridge structure of the current horizontal opening bridge is mainly limited to cable-stayed bridges and steel truss bridges, and the span is generally not more than 100m.
Disclosure of Invention
Based on the defects of the prior art, the utility model provides an opening bridge of a cable-stayed-suspension cable-arch combined system, which is divided into two spans, wherein a main span consists of a tie bar arch and suspension bridge combined structure, and the side span is a cable-stayed bridge structure. The middle pier is provided with a horizontal turning device which is driven by a hydraulic system, and the whole upper structure can rotate 90 degrees around the middle pier, so that the opening state of the bridge is realized. The advantages of each bridge type are fully utilized, and the large span of more than 200m is easy to realize.
The technical scheme of the utility model is as follows: an opening bridge of a cable-stayed-suspension cable-arch combined system is structurally divided into a main span and an edge span; the combined structure of the inclined boom tie-bar arch and the suspension bridge of the main span comprises a main span girder 1, an arch rib 3, a tie-bar arch boom 4, a cable tower 5, a main cable 6, a suspension bridge boom 7, a middle pier 9 and an edge pier 10; the two ends of the main span girder 1 are respectively supported by a middle pier 9 and a side pier 10, and the two ends are connected with an arch rib 3 by a tie-bar arch suspender 4; the cable tower 5 is connected to a middle pier 9 of the main span girder 1, the top end of the cable tower is connected to a side pier 10 of the main span girder 1 through a main cable 6, and the main cable 6 is connected with the main span girder 1 through a suspension bridge suspender 7; the side span is a cable-stayed bridge structure and comprises a side span main beam 2, stay cables 8, a middle pier 9 and side piers 10; one end of the side span main beam 2 is connected with the main span main beam 1 together with the middle pier 9, and the other end is supported by the other side pier 10; the cable tower 5 is connected with the side span main beam 2 through a stay cable 8; when in an open state, the supports of the two side piers 10 sink, and the main span main beam 1 and the structures above the side span main beam 2 are supported by the middle piers 9 to form a double-cantilever structure taking the middle piers 9 as fulcrums; as the ends of the main and side girders 1, 2 at the two side piers 10 sink, the main cable 6 is tensioned simultaneously with the stay cables 8 and the cable forces at the cable towers 5 are kept substantially balanced.
In a bridge forming state, the main span inclined suspender tied arch bridge and the side span cable-stayed bridge have better rigidity and dynamics performance, and mainly bear the dead weight of the bridge and the traffic load on the bridge deck; the suspension bridge structure only bears a small amount of dead weight of the structure and traffic load.
The utility model has the beneficial effects that: (1) The cable-stayed bridge, the suspension bridge and the arch bridge are combined into a new structure system to realize the function of opening the bridge, so that the advantages of each bridge type structure can be fully exerted; (2) In the bridge forming state, the main span inclined suspender tie-bar arch bridge and the side span cable-stayed bridge mainly bear the dead weight of the bridge and the traffic load on the bridge deck, and the suspension bridge structure only bears a small amount of dead weight of the structure and the traffic load; (3) When the cable is in the open state, the main cable and the stay cable are simultaneously tensioned along with the sinking of the end parts of the main beams at the two side piers, so that the cable force at the cable tower is basically balanced.
Drawings
FIG. 1 is a schematic illustration of an open bridge of a cable-stayed, suspension and arch combination system.
FIG. 2 is a schematic illustration of a main span diagonal boom tied arch bridge construction.
Fig. 3 is a schematic diagram of a combination system of a suspension bridge and a cable-stayed bridge.
In the figure: 1-a main span main beam; 2-a side span main beam; 3-arch ribs; 4-tie-bar arch boom; 5-cable towers; 6-main cable; 7-suspension bridge boom; 8-stay cables; 9-middle piers; 10-side pier.
Detailed Description
The following describes the embodiments of the present utility model in detail with reference to the technical scheme and the accompanying drawings.
Examples
The span of the open bridge of the cable-stayed-suspension cable-arch combined system is 220m+100m, the width is 32m, and the main girder is a steel box girder. The main span main beam 1 and the side span main beams 2 are continuous beam structures, and a large spherical hinge support is arranged at the middle pier 9, so that the whole upper structure can rotate 90 degrees along the horizontal direction by taking the middle pier 9 as a fulcrum. The arch rib 3 is connected with the main span girder 1, the main span girder 1 becomes a tie bar of a tie bar arch bridge structure, the cable tower 5 is positioned on the main span girder 1 at the middle pier 9, one end of the main cable 6 is anchored at the top end of the cable tower 5, the other end of the main cable 6 is anchored at the end part of the main span girder 1, the distance between the main cable 6 and the arch rib 3 is relatively close but not in the same plane, and the suspension bridge suspender 7 and the tie bar arch suspender 4 are ensured to be staggered in space. The stay cables 8 of the side span are anchored between the cable towers 5 and the side span main beams 2.
In a bridge forming state, the main span inclined suspender tied arch bridge and the side span cable-stayed bridge mainly bear the dead weight of the bridge and the traffic load on the bridge deck; the suspension bridge structure only bears a small amount of dead weight of the structure and traffic load. In the open state, the supports of the two side piers 10 sink, and the whole upper structure is supported by the middle pier 9, so that a double cantilever structure taking the middle pier 9 as a fulcrum is formed. As the ends of the main and side girders 1, 2 at the two side piers 10 sink, the main cable 6 is tensioned simultaneously with the stay cables 8 and the cable forces at the cable towers 5 are kept substantially balanced. At this time, the sinking displacement amounts of the end parts of the main span main beam 1 and the side span main beam 2 are respectively as follows: the maximum displacement of the top end of the cable tower 5 is 5cm and 33cm and 39cm, and the whole bridge structure is in a good balance state.
Claims (1)
1. The opening bridge of the cable-stayed and suspension cable-arch combined system is characterized in that the structure of the opening bridge of the cable-stayed and suspension cable-arch combined system is divided into a main span and an edge span; the combined structure of the inclined boom tie-bar arch and the suspension bridge comprises a main span main beam (1), an arch rib (3), a tie-bar arch boom (4), a cable tower (5), a main cable (6), a suspension bridge boom (7), a middle pier (9) and an edge pier (10); two ends of the main span girder (1) are respectively supported by a middle pier (9) and a side pier (10), and the two ends are connected with an arch rib (3) by a tie-bar arch suspender (4); the cable tower (5) is connected to the middle pier (9) side of the main span girder (1), the top end of the cable tower is connected to the side pier (10) side of the main span girder (1) through a main cable (6), and the main cable (6) is connected with the main span girder (1) through a suspension bridge suspender (7); the side span is of a cable-stayed bridge structure and comprises a side span main beam (2), stay cables (8), a middle pier (9) and side piers (10); one end of the side span main beam (2) is connected with the main span main beam (1) together with the middle pier (9), and the other end is supported by the other side pier (10); the cable tower (5) is connected with the side span main beam (2) through a stay cable (8);
the middle pier (9) is provided with a horizontal turning device, and the upper structure rotates 90 degrees around the middle pier (9) when the bridge is in an open state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320875129.1U CN220335683U (en) | 2023-04-18 | 2023-04-18 | Open bridge of cable-stayed-suspension cable-arch combined system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320875129.1U CN220335683U (en) | 2023-04-18 | 2023-04-18 | Open bridge of cable-stayed-suspension cable-arch combined system |
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| Publication Number | Publication Date |
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| CN220335683U true CN220335683U (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320875129.1U Active CN220335683U (en) | 2023-04-18 | 2023-04-18 | Open bridge of cable-stayed-suspension cable-arch combined system |
Country Status (1)
| Country | Link |
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| CN (1) | CN220335683U (en) |
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2023
- 2023-04-18 CN CN202320875129.1U patent/CN220335683U/en active Active
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