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Stay cable intersected multi-pylon cable-stayed bridge

A technology of cable-stayed cross-type and cable-stayed cables, which is applied to cable-stayed bridges, bridges, bridge parts, etc., can solve problems such as large bending moments and unfavorable bridge towers, reduce construction costs, improve bridge tower stress, and overall The effect of increased stiffness

Inactive Publication Date: 2016-10-12
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the No. 2 tower 2 and No. 3 tower 3 bear large bending moments, which is extremely unfavorable to the bridge towers.

Method used

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  • Stay cable intersected multi-pylon cable-stayed bridge
  • Stay cable intersected multi-pylon cable-stayed bridge
  • Stay cable intersected multi-pylon cable-stayed bridge

Examples

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Comparison scheme
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Embodiment Construction

[0060] Such as image 3 A kind of cable-stayed cross type multi-tower cable-stayed bridge shown comprises main girder 8, a plurality of bridge towers and two anchorages 5, and a plurality of said bridge towers comprise two side towers 9 and are arranged on two sides The middle tower 10 between the towers 9, the two sides of the upper part of a plurality of bridge towers are all connected with the main girder 8 by a plurality of first stay cables 11, and the upper ends of the side towers 9 are connected by ground anchor cables 7 Connected with the anchorage 5 corresponding to it, a plurality of second stay cables 12 and a plurality of third stay cables 13 with opposite inclination directions are arranged between two adjacent bridge towers, and the second stay cables The upper end of 12 is connected with the upper end of a bridge tower in the two adjacent bridge towers, and the upper end of the third stay cable 13 is connected with the upper end of the other bridge tower in the ...

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Abstract

The invention discloses a stay cable intersected multi-pylon cable-stayed bridge. The stay cable intersected multi-pylon cable-stayed bridge comprises a main beam, a plurality of pylons and two tiebacks, wherein two sides of the upper part of the plurality of pylons are connected with the main beam by virtue of a plurality of first stay cables, the upper end of a side pylon is connected with the tieback by virtue of a ground anchor cable, a plurality of second stay cables and a plurality of third stay cables are arranged between two adjacent pylons, the upper end of each second stay cable is connected with the upper end of one of two adjacent pylons, the upper end of each third stay cable is connected with the upper end of the other one of the two adjacent pylons, the lower end of each second stay cable and the lower end of each third stay cable are connected with a main beam span middle section between two adjacent pylons, the second stay cables and the third stay cables are intersected with each other in an area adjacent to the main beam span middle section, and the upper end of the middle pylon is provided with a first connection device for connecting the upper end of the corresponding second stay cable and the upper end of the third stay cable. By adopting the multi-pylon cable-stayed bridge, the stress of the pylons can be improved, the overall rigidity of the bridge can be improved, and the bridge deformation under the load action of cars can be reduced.

Description

technical field [0001] The invention belongs to the technical field of multi-tower cable-stayed bridges, in particular to a multi-tower cable-stayed bridge with intersecting cables. Background technique [0002] Cable-stayed bridges have large spanning capacity and good wind resistance stability, and are widely used in bridge construction on wide rivers, straits and other terrains. However, the traditional double-tower cable-stayed bridge has only a single main span, and its spanning capacity is still limited. In recent years, multi-tower cable-stayed bridges have gradually become a new type of bridge, greatly expanding the spanning capacity of cable-stayed bridges. However, the multi-tower cable-stayed bridge has low stiffness, and the structure is prone to large deformation under the live load of automobiles, which affects the performance of the bridge. The reason is that the middle bridge tower lacks the effective restraint of the anchor cables of the side span, and is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/04E01D19/14E01D19/16
CPCE01D11/04E01D19/14E01D19/16
Inventor 柴生波
Owner XIAN UNIV OF SCI & TECH
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