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Cable stayed bridge with semi-floating truss type bridge towers

A truss-type, cable-stayed bridge technology, applied in the field of bridge structure construction, can solve the problems affecting the driving smoothness and comfort of the bridge deck, difficult to control creep deformation, etc., so as to reduce the maintenance and repair workload and reduce the thickness of the bearing platform. And the effect of concrete volume and reducing temperature span

Pending Publication Date: 2019-08-16
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As the span of girder bridges increases, additional auxiliary measures such as stay cables are required to meet the structural stress requirements, but the temperature deformation of the main girder will also increase accordingly. If the prestressed concrete main girder is used, the creep deformation in the later stage is also difficult to control , affecting the smoothness and comfort of the bridge deck, especially for high-speed railway bridges with high requirements for smoothness

Method used

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  • Cable stayed bridge with semi-floating truss type bridge towers
  • Cable stayed bridge with semi-floating truss type bridge towers

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Embodiment Construction

[0024] Below, the present invention is described in detail with reference to accompanying drawing and embodiment:

[0025] Such as Figure 1~2 As shown, a cable-stayed bridge with semi-floating truss-type pylons includes side piers 3 on both sides and a bridge tower 2 in the middle, and supports 4 are provided at the middle of the bridge tower 2 and the upper ends of the side piers 3, so that A main girder 5 that directly bears the load of the bridge deck is arranged on the support 4 , multiple pairs of stay cables 6 are arranged between the bridge tower 2 and the main girder 5 , and the bridge tower 2 is separated from the main girder 5 .

[0026] The bridge tower 2 is a truss type bridge tower with integrated tower pier and separated tower beams.

[0027] The pylons 2 are A-shaped in the longitudinal direction, and the pylons 2 are H-shaped in the transverse direction.

[0028] The support 4 is a longitudinal movable support and a two-way movable support, and two rows of s...

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Abstract

The invention discloses a cable stayed bridge with semi-floating truss type bridge towers. The cable stayed bridge with the semi-floating truss type bridge towers comprises side piers on the two sidesand the bridge towers located on the middle part, wherein supporting seats are arranged on the middle parts of the bridge towers and are arranged at the upper ends of the side piers separately, a main beam which bears bridge floor load is arranged on the supporting seats, a plurality of pairs of stay cables are arranged between the bridge towers and the main beam, and the bridge towers are separated from the main beam. According to the cable stayed bridge with the semi-floating truss type bridge towers, the space truss type bridge towers are adopted, the longitudinal dimensions of the bridgetowers are large, and the bearing platform thickness and the concrete quantity of lower foundations of a large-span bridge are effectively reduced; two rows of longitudinal supporting seats are arranged on each bridge tower, the temperature deformation of the main beam is reduced, the problem that creep deformation of the large-span concrete main beam is difficult to control is effectively solved,and it is beneficial to bridge floor driving, especially to the riding comfort and the comfort level of high speed railway driving; and no fixed supporting seat is arranged, for paving a continuouslywelded rail track large-span railroad bridge, the temperature span can be effectively reduced, track temperature regulators are prevented from being arranged, and the maintenance workloads are reduced.

Description

technical field [0001] The invention belongs to the field of bridge structure construction, in particular to a cable-stayed bridge with semi-floating truss type bridge towers. Background technique [0002] As the span of girder bridges increases, additional auxiliary measures such as stay cables are required to meet the structural stress requirements, but the temperature deformation of the main girder will also increase accordingly. If the prestressed concrete main girder is used, the creep deformation in the later stage is also difficult to control , affecting the smoothness and comfort of the bridge deck, especially for high-speed railway bridges with high requirements for smoothness. Contents of the invention [0003] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a cable-stayed bridge with semi-floating truss type bridge towers. [0004] The technical solution of the present invention is: a cable-stayed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/04E01D19/00E01D19/14E01D19/16
CPCE01D11/04E01D19/00E01D19/14E01D19/16
Inventor 王祯苏伟左家强周岳武宋顺忱李艳万明季伟强邓江涛历付
Owner CHINA RAILWAY DESIGN GRP CO LTD
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