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Single span suspended deck arch bridge

A suspension bridge and span technology, applied in arch bridges, bridges, bowstring bridges, etc., can solve the problem of not recommending a single span of cantilever bridges, and achieve the effect of ensuring water body navigation and avoiding navigation interference.

Active Publication Date: 2009-03-04
毛罗·巴斯基耶里
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore it is not recommended to construct cantilever bridges with large single spans

Method used

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  • Single span suspended deck arch bridge
  • Single span suspended deck arch bridge
  • Single span suspended deck arch bridge

Examples

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Embodiment Construction

[0091] In more detail: with reference to Figures 1 and 2, the resulting structure is mainly composed of the following: a half-arch 1; a continuous beam 2; a bridge deck 3 hooked to the half-arch 1 by means of vertical suspension cables 4; and tie rods 5 , which is set at the same height as the bridge deck 3 and fixed with its end 6 to the abutment of the half-arch 1 . The structure can be extended on a helical ramp 7 at the end of the continuous beam 2, the form of the ramp 7 being preferred but not exclusive, in order to connect road lanes and railway tracks to similar existing infrastructure. The structure is preferably but not exclusively supported by foundations placed on the shore, namely the main base 8 and the outer base 9, in the variant with hollow buoyancy bases and / or in variants with solid bases, both of which are reinforced by neoprene A rubber bearing member or the like 10 (vibration isolator) is provided on the outer arch.

[0092] The anchor cables 11 placed a...

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Abstract

Single span arch bridge, of suspended deck type, with foundations onshore, fit to cross bodies of water also very large (> 3 km) . Buoyant foundations and antidrift diaphragms make it insensitive to the possible soil liquefaction. Buildable in cantilever mode and self-supporting, then without scaffoldings nor stays and provisional poles and without resorting to underwater operations. A preferential but not exclusive architectural modality provides the balancing of the thrusts by means of ties independent from the deck, obtaining then, in this way, a tied arch bridge. Clusters of jacks placed in the key induce a permanent and variable constraint condition, fit to optimize in real time the stress condition of the bridge, which then behaves as an intelligent structure. The presence of several structural tensioned components as ties, vertical strings and bracings predisposes the structure to a selective use of innovative materials of very high mechanical properties, very light, resistant to fatigue and to the aggressiveness of the environment, free from maintenance .

Description

technical field [0001] The invention relates to structural engineering-civil buildings-suspension arch bridge. Background technique [0002] As far as the state of the art is concerned, it is known that several long-span (>500m) viaducts have been built; they are mainly suspension bridges, which have the largest span (>1000m) of all bridges. Only a few of the suspension bridges in question are designed to allow train traffic, but only four of them—and these four are not among the largest of the bridges—are actually train traffic (Tagus Bridge in Lisbon, span 1013 meters; the western section of the Bay Bridge in San Francisco, with a span of 704 meters; the Tsing Ma Bridge in Hong Kong, with a span of 1377 meters; a bridge in the Seto-Ohashi System in Japan, with a span of 1100 meters). As for the trains running on these bridges, they are also light rail (about 500 tons, compared with 5000 tons for the heaviest freight trains). Typically, Japan's Akashi Kaikyo Bridge,...

Claims

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Application Information

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IPC IPC(8): E01D4/00
CPCE01D4/00E01D21/10E01D1/005
Inventor 毛罗·巴斯基耶里
Owner 毛罗·巴斯基耶里
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