Dual-layer steel truss-Ferris wheel combined bridge

Abstract

The invention discloses a dual-layer steel truss-Ferris wheel combined bridge, comprising a main bridge, support tower posts and a Ferris wheel; the main bridge adopts a dual-layer steel truss beam structural form and is provided with at least two longitudinal main trusses; the main trusses adopt steel box type cross-section rod parts; longitudinal and transverse beams are used between the main trusses for connection; an opening is formed on the bridge surface which is positioned at the upper layer of the main bridge; a foundation of the main bridge is a first foundation; the support tower posts are two inverted V-shaped tower posts with steel structure; a foundation of the tower posts is a second foundation; a support tower post cross beam is arranged at the top parts of the two inverted V-shaped tower posts with steel structure; the first foundation and the second foundation constitute a compound wheel bridge foundation; a wheel disc of the Ferris wheel is arranged in an opening positioned on the bridge surface of the upper layer of the main bridge; and a central rotary shaft thereof and the support tower post cross beam are the same member. The bridge can eliminate the hidden problem of indefinite structure stress existing in the integration of a wheel bridge structure, decrease the mutual influences between the bridge and the Ferris wheel, reduce the diameter of a bearing of the central rotary shaft and greatly reduce the risks of processing and assembling the Ferris wheel bridge.

Description

technical field [0001] The invention relates to a bridge, in particular to a double-layer steel truss-ferris wheel combined bridge. Background technique [0002] The Ferris wheel is generally the name for a super-large viewing car over 100 meters. The English name is: Giant Wheel. Passengers sit on the Ferris wheel and slowly turn up, overlooking the surrounding scenery from a height. As a kind of playground mobile game, it is known as the "Three Treasures of Paradise" together with the roller coaster and the merry-go-round. Due to its wheel-like shape and large footprint, the Ferris wheel has always been an iconic sight in amusement parks and cities. At present, the Ferris wheel is increasingly favored by major cities and has become an architectural design that creates special landscapes and has landmark significance. Table 1 lists the ferris wheels with a height of more than 100m in the world at present. [0003] Table 1 List of ferris wheels in the world ranked by dia...

AI Technical Summary

Problems solved by technology

The disadvantage of the double-deck composite truss bridge realized by the above-mentioned technical scheme is that the upper and lower concrete decks of the bridge not only play the role of the carriageway slab in the transverse stress system, but also play the main role in the longitudinal stress system. The upper and lower chords of the truss, that is, only the steel webs of the main truss are left to bear the shear force, and the upper and lower chords are replaced by concrete slabs. Unclear, so that a high safety factor cannot be obtained, and the construction is more difficult

The transverse rigidity of the portal frame system in the above technical solution is weak; the root of the inverted Y frame is hinged, which is unfavorable for the lateral stiffness; the thrust of the inverted Y frame on both ends is balanced by the bridge deck, which increases the burden on the bridge deck; the rigidity of the inverted Y frame The frame beam is not only the main force-bearing member of the bridge, but also the support of the central rotating shaft of the Ferris wheel. There is a hidden danger of unclear structural force, and the mutual influence between the bridge and the Ferris wheel is relatively large. In addition, due to the rigid frame beam Due to the double force, not only the diameter of the main shaft of the Ferris wheel is large, but also the outer diameter of the bearing will be larger, which brings huge risks to the processing and assembly of the Ferris wheel bridge

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