Shuttle-shaped bridge tower in highway-railway flat-layer steel box girder cable-stayed bridge

Abstract

The invention relates to a shuttle-shaped bridge tower in the highway-railway flat-layer steel box girder cable-stayed bridge which comprises a tower column and a supporting foundation, the tower column is of a shuttle-shaped structure which is wide in the middle and gradually narrows up and down, the two tower limbs of the tower column are each provided with a vertical limb section with the limbface parallel to the vertical direction, and the vertical limb sections at least cover the position where a main girder is located. In addition, the invention further relates to a cable-stayed bridgewhich comprises a main beam and at least one bridge tower, and the shuttle-shaped bridge tower in the highway-railway flat-layer steel box girder cable-stayed bridge is adopted as the bridge tower. The tower column of the fusiform structure is adopted and is similar to a fish or a boat, and the landscape performance is good; by designing the vertical limb sections for the tower limbs, the tower column is in a vertical transition type within the range of the main beam, the design effect that the bridge tower vertically penetrates through the main beam can be achieved, the tower limbs verticallypenetrate through the bridge surface of the main beam, the width of the main beam of the bridge tower vertically-penetrating type cable-stayed bridge can be reduced, and the economical efficiency isgood.

Description

technical field [0001] The invention belongs to the technical field of bridges, and in particular relates to a shuttle-shaped pylon in a flat-story steel box girder cable-stayed bridge for highways and railways and a cable-stayed bridge using the pylon. Background technique [0002] At present, the commonly used pylon types of cable-stayed bridges are H-type, A-type, inverted Y-type, diamond-type, etc. In the flat layer cable-stayed bridge of highway and railway, the design scheme of the main girder passing through the bridge pylon has a good application effect. However, the existing bridge tower type has the following problems in the application of the bridge tower passing through the bridge: the H-type bridge tower can satisfy The design requirements of the vertical center-piercing main girder of the bridge tower, the cross-sectional width of the main girder is small, but the shape of the H-shaped bridge tower is relatively conventional, the landscape is slightly poor, the...

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Problems solved by technology

In the flat layer cable-stayed bridge of highway and railway, the design scheme of the main girder passing through the bridge pylon has a good application effect. However, the existing bridge tower type has the following problems in the application of the bridge tower passing through the bridge: the H-type bridge tower can satisfy The design requirements of the vertical center-piercing main girder of the bridge tower, the cross-sectional width of the main girder is small, but the shape of the H-shaped bridge tower is relatively conventional, the landscape is slightly poor, the lateral stability of the bridge tower and the lateral stiffness of the main girder are small, and the foundation of the bridge tower The scale is relatively large; when A-shaped, inverted Y-shaped or diamond-shaped pylons are used, the main girders of the bridge pylons pass obliquely (that is, have an included angle with the main girder bridge deck). In order to meet the maintenance requirements, the width of the main girder needs to Compared with the scheme of vertically passing through the bridge tower, it is about 2m longer, and the economy is poor

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