Novel three-tower self-anchored suspension bridge and construction method thereof
A self-anchored suspension bridge and construction method technology, applied in suspension bridges, bridges, bridge parts, etc., can solve the problems of wide deck bridge mechanics and pylon size balance, the span of three-tower self-anchored suspension bridges are difficult to break through, etc. , to achieve the effect of optimal force, increasing horizontal restraint and reducing bending moment of longitudinal bridge
Pending Publication Date: 2021-01-19
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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Problems solved by technology
[0006] The purpose of the present invention is to provide a three-tower self-anchored suspension bridge and its construction method to solve the difficulty in breaking through the span of the three-tower self-anchored suspension bridge in the prior art, and the problems of bridge mechanics with wide deck and bridge tower size balance problem
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[0029] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.
[0030] like figure 1 , figure 2 and image 3 As shown, a three-tower self-anchored suspension bridge includes a foundation 1, two side piers 2, two auxiliary piers 12, main girders erected on both side piers 2, and several main towers 3 between the two side piers 2 , a number of main cables 4 fixed to the main tower 3 and a number of slings 5 for lifting the main girder. like image 3 As shown, the main girder can be a composite girder or a steel box girder. If it is a composite girder, it includes the steel main girder 6 and the concrete bridge deck 9 above the steel main girder 6. If it is a steel box girder, it only includes the steel main girder 6 . figure 1 and figure 2 None of the concrete bridge decks 9 are shown. like figure 2 As shown, the steel girder 6 is pierced through the main tower...
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A three-tower self-anchored suspension bridge comprises two side piers, two auxiliary piers arranged on the inner sides of the two side piers, three main towers arranged between the two auxiliary piers, a main beam, a plurality of main cables fixed to the main towers and a plurality of slings used for lifting the main beam, and is characterized in that the main beam is arranged on the side piers and the auxiliary piers and penetrates through the main towers; main cables are erected between the adjacent main towers and between the auxiliary piers and the main towers, the main cables are space cable faces, and the main cables and the main beams are connected through central buckles at the midspan positions to restrain relative displacement of the main cables and the main beams. A three-towerself-anchored suspension bridge structure system is formed through the central buckles, the horizontal constraint of the midspan main cable on the top of the middle tower is increased, and thereforethe longitudinal bending moment of the bottom of the middle tower under unbalanced live loads is reduced, the structure size of the middle tower is reduced, the vertical rigidity of the structure is improved, and the economic span of the three-tower self-anchored suspension bridge is increased; the method can be suitable for a three-tower self-anchored suspension bridge with the span of 400 m or above, and is suitable for a large-span highway-rail combined bridge.
Description
technical field [0001] The invention belongs to the technical field of bridge engineering, and relates to a three-tower self-anchored suspension bridge and a construction method thereof. Background technique [0002] The three-tower self-anchored suspension bridge is appreciated by most people for its graceful linearity and patchwork appearance, especially in urban bridges, it is more and more favored by people. The maximum span of the three-tower self-anchored suspension bridge at home and abroad does not exceed 200 meters. When the span is increased, the unbalanced bending moment at the bottom of the middle tower increases significantly; when the dimensional stiffness of the middle tower increases, the anti-slip coefficient of the main cable of the saddle of the middle tower decreases significantly. The conflict between the two limits the development of the span of the three-tower self-anchored suspension bridge. [0003] For bridges built together with public rails, the...
Claims
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Login to View More IPC IPC(8): E01D19/00E01D11/02E01D21/00
CPCE01D19/00E01D11/02E01D21/00
Inventor 陈亮常付平逯东洋邵长宇
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP