NO20150509A1

NO20150509A1 - Floating bridge and platform built on anchored deep-flowing underwater foundation

Info

Publication number: NO20150509A1
Application number: NO20150509A
Authority: NO
Inventors: Øystein Rødstøl
Original assignee: Roedstoel Oeystein
Priority date: 2015-04-19
Filing date: 2015-04-19
Publication date: 2016-10-20

Description

Beskrivelse: Brua eller plattforma har pontonger eller flyteelement som er oppankret langt nede i sjøen. På flyteelementet er det festet en søyle laget som en åpen stålkonstruksjon som bærer brua eller plattforma. Dette gir et tilnærmet fast geografisk festepunkt til brua. Tilnærmet fordi lange ankerkjettinger vil fjære litt ved ulike belastninger, og fordi oppdriften av flyteelementet og ankerkjettingvinkelen begrenser belastningene festepunktet kan motstå. (Henviser til 4 stk. Description: The bridge or platform has pontoons or floating elements that are anchored far down in the sea. Attached to the floating element is a column made as an open steel structure that supports the bridge or platform. This provides an approximately fixed geographical attachment point for the bridge. Approximately because long anchor chains will spring slightly under different loads, and because the buoyancy of the floating element and the angle of the anchor chain limit the loads the attachment point can withstand. (Refers to 4 pcs.

tegninger som ligger som vedlegg) drawings attached)

Om brua og monteringen av denne: Brua åpner opp for mulige fjordkryssinger der dype fjorder er for brede for et langt bruspenn, og der høye bølger gjør vanlige flytebruer uegnet. Ved å benytte et eller flere forankrede dyptflytende fundament får man også mange nye muligheter for fjordkryssinger med konvensjonelle bruer. Delene kan bygges som moduler på land, som raskt kan monteres. Brua kan også flyttes og gjenbrukes. About the bridge and its installation: The bridge opens up possible fjord crossings where deep fjords are too wide for a long jetty, and where high waves make ordinary floating bridges unsuitable. By using one or more anchored deep floating foundations, you also get many new possibilities for fjord crossings with conventional bridges. The parts can be built as modules on land, which can be quickly assembled. The bridge can also be moved and reused.

Den er ikke egnet der det er, eller er fare for, sterke dype understrømmer (malstrømmer eller tsunamier). Den er også sårbar for kollisjon med legemer som flyter i overflaten (skip, isflak). Brukollaps grunnet skipskollisjon kan likevel unngåes dersom en dyr utgave av brua konstrueres slik at den står selv om en slik kollisjon fjerner et de forankrede dyptflytende fundamentene. It is not suitable where there are, or there is a risk of, strong deep undercurrents (mal currents or tsunamis). It is also vulnerable to collision with bodies floating on the surface (ships, ice floes). Bridge collapse due to a ship collision can still be avoided if an expensive version of the bridge is constructed so that it stands even if such a collision removes one of the anchored deep floating foundations.

Brua monteres ved først å senke ned store tunge betongforankringer. Flytemodulene bygges på land og fløtes til monteringsstedet. Nederste flyteelement fylles med vann til det står vertikalt i vannet. De nedre forankringskjettingene monteres. Flyteelementet tømmes så helt for vann, eventuelle øvre kjettinger festes, og landkjettingene festes. Bruspennene bygges også på land og kranes på plass med store flytekraner. Etter at brua er ferdig montert fjernes de midlertidige flyteelementene. The bridge is assembled by first lowering large heavy concrete anchors. The floating modules are built on land and floated to the assembly site. The bottom floating element is filled with water until it stands vertically in the water. The lower anchoring chains are mounted. The floating element is then completely emptied of water, any upper chains are attached, and the land chains are attached. The fountain pens are also built on land and craned into place with large floating cranes. After the bridge has been assembled, the temporary floating elements are removed.

Oppdriften til det nederste flyteelementet må være større enn vekten på og av brua, pluss en god sikkerhetsmargin. Ankerkjettingene dimensjoneres med god sikkerhetsmargin for å tåle oppdriften av flyteelementene. Før brua bygges testes og forbedres egenskapene på en småskala modell. The buoyancy of the bottom floating element must be greater than the weight on and off the bridge, plus a good safety margin. The anchor chains are dimensioned with a good safety margin to withstand the buoyancy of the floating elements. Before the bridge is built, the properties are tested and improved on a small-scale model.

Claims

Patent claims: 1. Today's floating bridges and platforms all have a floating element that is located in or near the water surface. The unique thing about this floating bridge or platform is that the floating elements are placed deeper than before. Tides and rough seas will then not be able to transfer such great forces to the floating element, and because the column between the floating element and the bridge is built as an open steel structure, the rest of the bridge will also be spared major stresses. This is because the waves will then pass almost unhindered through the open steel column construction.

2. Comparable bridges or platforms have tight vertical anchor chains that reduce horizontal movements. The unique feature of this bridge or platform is that the floating element lifts the inclined anchor chains to a fixed geographical point. Where there are too few anchor chains to achieve this, the bridge structure or the land chains take over the missing bracing. This means that the bridge or platform will also move less vertically, which in turn simplifies the connection to land. Bridges and platforms are also reduced in swaying or swaying. The patent claim applies to all bridges, platforms, or other installations on water that make use of this principle, which I describe as anchored deep-floating submerged foundation, or AD SF (Anchored Deep-floating Submerged Foundation).