Seagull-type space dorsal cable-stayed bridge system

Abstract

The invention relates to a seagull-type space dorsal cable-stayed bridge system. The cable-stayed bridge comprises bridge towers, stay cables, main beams, side piers, middle piers, back cables and inhaul cables, and relates to the technical field of bridge engineering, wherein the bridge tower is designed to be arc-shaped; two ends of the back cable are respectively anchored at the top of the bridge tower; one end of the inhaul cable is connected with the back cable; the other end is anchored at the root of the bridge tower; the bridge towers, the back cables and the inhaul cables form a three-dimensional frame structure; the space rigidity of the cable-stayed bridge can be improved; the effect of resisting dead load and live load is facilitated; the back cable can be tensioned at the tower top for cable force adjustment; the inhaul cable can be tensioned at the root of the bridge tower for cable force adjustment; therefore, the stress state of the bridge tower under the action of deadweight and tension of the stay cable is improved; therefore, the line shape of the bridge tower is close to the reasonable arch axis, the bending moment borne by the root of the bridge tower is reduced, that is, the size of the cross section of the tower bottom does not need to be designed to be very large, and therefore the spanning capacity of the cable-stayed bridge can be enhanced, material loss and cost can be reduced, and the aesthetic feeling of the bridge can be enhanced.

Description

technical field [0001] The present application relates to the technical field of bridge engineering, in particular to a seagull space back cable-stayed bridge system. Background technique [0002] Cable-stayed bridge is a bridge structure composed of pylons, main girders and cable-stayed cables. It is usually divided into double-tower cable-stayed bridges, single-tower cable-stayed bridges, low-tower cable-stayed bridges, and cable-stayed bridges without back cables. The cable-stayed bridge has towering towers, which give people a strong visual impact; the relatively slender main girder sets off the strong sense of cable-stayed cables; flexible cables and structural layout give designers a broad space for imagination , so it is widely used in urban landscape bridges. [0003] With the progress of society and the development of urban construction, urban bridges no longer focus solely on their traffic functions, but tend to coordinate practicality and aesthetics. It is of gre...

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Problems solved by technology

[0005] The embodiment of the present application provides a seagull space back cable-stayed bridge system to solve the problems of large material loss, high cost and weak spanning ability caused by enhancing the bending moment resistance of the cable-stayed bridge in the related art

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