Multi-tower cable-stayed bridge and construction method thereof

A technology for cable-stayed bridges and side towers, applied in the field of cable-stayed bridge structures, can solve the problems of insufficient system rigidity and multi-tower cable-stayed bridges, and achieve the effects of simple structure, beautiful appearance, and improved efficiency

Active Publication Date: 2016-08-24
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, insufficient system stiffness is the key technical bottleneck for the development of multi-tower cable-stayed bridges to larger spans

Method used

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  • Multi-tower cable-stayed bridge and construction method thereof
  • Multi-tower cable-stayed bridge and construction method thereof
  • Multi-tower cable-stayed bridge and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] a kind of like figure 1 Shown the three-tower cable-stayed bridge of the present invention, this three-tower cable-stayed bridge comprises two " big umbrella " type structural systems and a " small umbrella " type structural system, and " small umbrella " type structural system is positioned at the cable-stayed bridge middle part, Two "big umbrella" structural systems are located on both sides of the "small umbrella" structural system, and the two "big umbrella" structural systems are symmetrically arranged along the middle section of the three-tower cable-stayed bridge.

[0045]The above-mentioned "big umbrella" structural system includes side tower 1, "big umbrella" mid-span main beam 3, "big umbrella" side-span main beam 4, "big umbrella" mid-span stay cable 6 and "big umbrella" side span Cable 7, "big umbrella" mid-span main beam 3 and "big umbrella" side-span main beam 4 are respectively arranged on both sides of side tower 1, "big umbrella" mid-span stay cable 6 a...

Embodiment 2

[0055] a kind of like figure 2 The four-tower cable-stayed bridge of the present invention is shown, and the four-tower cable-stayed bridge includes two "big umbrella" type structural systems and two "small umbrella" type structural systems, and the two "small umbrella" type structural systems are connected to each other As a whole, it is located between two "big umbrella" structural systems, and the two "big umbrella" structural systems are located on both sides of the "small umbrella" structural system, and the two "big umbrella" structural systems are inclined along the four towers. The middle section of the stay bridge is arranged symmetrically.

[0056] In addition to adding a "small umbrella" structural system, other structures and shape features of the "big umbrella" structural system and the "small umbrella" structural system of the four-tower cable-stayed bridge in this embodiment are the same as those in embodiment 1. The three-tower cable-stayed bridge in is ident...

Embodiment 3

[0058] a kind of like image 3 The five-tower cable-stayed bridge of the present invention is shown, the five-tower cable-stayed bridge includes two "big umbrella" type structural systems and three "small umbrella" type structural systems, and the three "small umbrella" type structural systems are connected to each other As a whole, it is located between two "big umbrella" structural systems, and the two "big umbrella" structural systems are located on both sides of the "small umbrella" structural system, and the two "big umbrella" structural systems are inclined along the five towers. The middle section of the stay bridge is arranged symmetrically.

[0059] In addition to adding two "small umbrella" structural systems, other structures and shape features of the "big umbrella" structural system and the "small umbrella" structural system of the five-tower cable-stayed bridge in this embodiment are the same as those in the embodiment. The three-tower cable-stayed bridge in 1 is...

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Abstract

A multi-tower cable-stayed bridge comprises two big-umbrella-shaped structural systems on the two sides and a small-umbrella-shaped structural system in the middle. Each big-umbrella-shaped structural system comprises a side tower, a big-umbrella mid-span main beam, a side-span main beam, mid-span stay cables and side-span stay cables, wherein the big-umbrella mid-span/side-span stay cables are connected with the side tower and the mid-span/side-span main beam. The small-umbrella-shaped structural system comprises a middle tower, small-umbrella main beams and small-umbrella stay cables, wherein the small-umbrella stay cables are connected with the middle tower and the small-umbrella main beams. In the construction process, firstly, the side tower, the middle tower and the like are constructed first; then, the big-umbrella mid-span main beam and the side-span main beam are symmetrically constructed, wherein beam sections without supports like auxiliary piers are constructed with a cantilever construction method, and beam sections with supports like auxiliary piers are constructed with a support cast-in-place or hoisting method; finally, the main beams of the big-umbrella-shaped structural systems and the small-umbrella-shaped structural system are constructed to a final closure at the same time, and final closing is performed to achieve the finished bridge state. The multi-tower cable-stayed bridge has the advantages of being high in system rigidity, high in construction safety and the like.

Description

technical field [0001] The invention relates to a bridge, in particular to a cable-stayed bridge structure. Background technique [0002] The auxiliary piers and transition piers of conventional double-tower cable-stayed bridges not only provide vertical support for the main girder, but at the same time, when the vehicle load acts on the main span, the tail cables anchored near the transition piers can strongly restrain the direction of the cable tower to the main span. The horizontal longitudinal displacement of the span is constrained to constrain the vertical displacement of the main beam of the main span, and the vertical stiffness of the main beam of the main span is significantly improved. [0003] Compared with the conventional double-tower cable-stayed bridge, the mechanical properties of the multi-tower cable-stayed bridge have changed significantly due to the addition of the middle tower: there are no auxiliary piers and transition piers on both sides of the middle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D11/04E01D19/00E01D21/00E01D21/10
CPCE01D11/04E01D19/00E01D21/00E01D21/10
Inventor 邵旭东胡佳
Owner HUNAN UNIV
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