SE424652B

SE424652B - Wave-dampening unit

Info

Publication number: SE424652B
Application number: SE7805792A
Authority: SE
Inventors: Staffan Greger Styrb Lundstrom
Original assignee: Staffan Greger Styrb Lundstrom
Priority date: 1978-05-22
Filing date: 1978-05-22
Publication date: 1982-08-02
Also published as: SE7805792L

Abstract

A wave-dampening unit, which incorporates old car tyres, or similar, essentially circular, or preferably elastic devices, which are placed on their upper end in water and which are jointly connected by means of a band or similar items and which, in principle, lack their own floating force. These devices 10-19 are encased by and connected to, and to a primary extent, fill out the space within a closed floating body 9. Based on the invention, the floating body 9 is designed with such floating power that it floats on a higher level on water than said devices 10-19 do. The size of the floating body 9 and the number of devices 10-19, as well as their dimensions, are selected so that the floating body 9 forms a constraint for said devices 10-19, when during heaving seas they strive to move up against said higher level and thus the friction is increased in part between said devices 10-19 themselves and in part between said devices 10-19 and the floating body 9.

Description

f73os792-4 05. vilkets ändar är ihopfogade till bildande av ett slutet hålrum. f73os792-4 05. the ends of which are joined together to form a closed cavity.

Enligt föreliggande uppfinning ernås att bildäcken eller liknande an- ordningar under den uppåtgående rörelsen tvingas samman så att friktionen dememellan ökas. Självfallet kan föreliggande uppfinning även nyttjas på samma sätt med identisk effekt vid bildäckens nedåtgående rörelse, K men detta förutsätter att däcken tyngdbelastas för att någon väsentlig effekt skall uppnås och därför har detta alternativ begränsat intresse.According to the present invention it is achieved that the car tires or similar devices are forced together during the upward movement so that the friction between them is increased. Of course, the present invention can also be used in the same way with identical effect in the downward movement of the car tires, K but this presupposes that the tires are loaded with weight in order for any significant effect to be achieved and therefore this alternative has limited interest.

Uppfinningen förklaras närmare nedan i anslutning till bifogade rit- ningar, av vilka fig. 1 visar en sektion genom ett vågdämpande element enligt uppfinningen, fig¿_g visar en planvy över det vågdämpande elemen- tet enligt_fig, 1, fig¿_§ visar en av ett stort antal vågdämpande element enligt fig. 1 utformad vågbrytare eller pirkonstruktion, §ig¿_5 visar anordnandet av en gångtrall eller överbyggnad på en vågbrytare eller lik- nande enligt fig. 3 och fig¿_§ visar en sektion V-V genom gångtrallen eller överbyggnaden enligt fig. 4. K V K _' ' Ett vågdämpande element visas i fig. 2 i planvy och innefattar ett antal kasserade bildäck 1-19 eller liknande, väsentligen cirkulära och företrädesvis elastiska, deformerbara anordningar, vilka är placerade -på högkant i vattnet och vilka är inbördes sammanhållna med hjälp av band , 21 eller liknande detaljer. Ett antal bildäck 1-8 är även ihopkopp- lade med en lämpligen cirkulär flytkropp 9, vilken kan utgöras av ett böjt rör, vars ändar är ihopfogade, exempelvis.ett polyetenrör för att bilda ett med luft fyllt, slutet hålrum. Antalet bildäck innanför den cirkulära flytkroppen 9 och sistnämndas storlek jämte flytkraft är så valda att bildäcken 10-19 normalt flyter på en nivå i vattnet med deras största diametrala utbredning liggande under nivån för flytkroppen 9 och så att bildäcken ligger tätt invid varandra. Vissa av bildäcken 10-19 _ berör dessutom i viloläget flytkroppen 9 med deras övre delar.The invention is explained in more detail below in connection with the accompanying drawings, of which Fig. 1 shows a section through a wave-damping element according to the invention, Fig. G shows a plan view of the wave-damping element according to Fig. 1, Fig. a large number of wave-damping elements according to Fig. 1 designed breakwater or pier construction, §ig¿_5 shows the arrangement of a gangway or superstructure on a breakwater or the like according to Fig. 3 and Fig¿_§ shows a section VV through the gangway or superstructure according to Fig. 4. KVK _ '' A wave-damping element is shown in Fig. 2 in plan view and comprises a number of discarded car tires 1-19 or similar, substantially circular and preferably elastic, deformable devices, which are placed - on a vertical edge in the water and which are interconnected by means of bands, 21 or similar details. A number of car tires 1-8 are also connected to a suitably circular floating body 9, which can be constituted by a bent pipe, the ends of which are joined together, for example a polyethylene pipe to form an air-filled, closed cavity. The number of car tires inside the circular float 9 and the size of the latter as well as buoyancy are chosen so that car tires 10-19 normally float at a level in the water with their largest diametrical distribution lying below the level of the float 9 and so that the car tires are close together. In addition, some of the car tires 10-19 _ in the rest position touch the floating body 9 with their upper parts.

Vid sjöhävning och vågförekomst kommer bildäcken 10-19 att vilja strä- va uppåt på grund av en inkommande våg och när så sker fungerar flytkrop- pen 9 såsom en strypning som strävar efter att bromsa bildäcken, vilka därigenom deformeras, varvid friktionen mellan däcken inbördes och mot flytkroppen 9 kommer att öka kraftigt. Den värme som därvid alstras av- ledes givetvis till vattnet. Härigenom omvandlas en mycket stor del av den infallande vägens energi till värmeenergi och därmed dämpas den in- fallande vågen kraftigt.During sea level rise and wave occurrence, the car tires 10-19 will want to strive upwards due to an incoming wave and when this happens the floating body 9 functions as a choke which strives to brake the car tires, which are thereby deformed, whereby the friction between the tires and against the floating body 9 will increase sharply. The heat generated is of course diverted to the water. In this way, a very large part of the energy of the incident wave is converted into heat energy and thus the incident wave is greatly attenuated.

En förutsättning för att föreliggande uppfinning skall fungera på av- l7sos792-4 s sett sätt än att flytkroppen eller -ringen 9 har tillräcklig styvhet och storlek, vilka egenskaper är avpassade till den typ av vågor man avser att bryta ned. Flytringen 9 måste därför ges en sådan flytkraft att den 05 kan bära bildäcken 1-8 och även de belastningar som man önskar påföra exempelvis en vågpir, uppbyggd av ett antal vågdämpande element enligt ovan. Sådana belastningar kan vara motiverade av flera skäl, exempelvis då man önskar ökad sammanpressning mellan bildäcken eller då man har för avsikt att belägga vågpiren med trallgång eller liknande.A prerequisite for the present invention to function in a manner other than that the floating body or ring 9 has sufficient rigidity and size, which properties are adapted to the type of waves intended to be broken down. The floating ring 9 must therefore be given such a buoyancy that it can carry the car tires 1-8 and also the loads that it is desired to apply, for example, a wave pier, built up of a number of wave-damping elements as above. Such loads can be justified for several reasons, for example when you want increased compression between the car tires or when you intend to coat the wave pier with a trolley or the like.

Ett exempel på en principlösning för en vågpir, uppbyggd av ett antal vågdämpande!element, visas i fig. 3. Vart vâgdämpande element enligt den- na fig. 3 är via flytringen 9 kopplad till ett intilliggande vågdämpande elements flytring 9' med hjälp av exempelvis ett ytterligare bildäck 26 etc, genom vilket flytringarna 9 och 9' är trädda.An example of a principle solution for a wave pier, built up of a number of wave damping elements, is shown in Fig. 3. Each wave damping element according to this Fig. 3 is connected via the float ring 9 to a floating ring 9 'of an adjacent wave damping element by means of e.g. a further car tire 26 etc., through which the floating rings 9 and 9 'are threaded.

Den i fig. 3 visade vâgpiren kan vara försedd med gångtrallvoch/eller förtöjningssystem för båtar och uppbyggnaden av en gångtrall visas i fig. 4 och 5. Gångtrallen 27 vilar på längsgående huvudbalkar, av vilka en visas med hänvisningsbeteckningen 28. Huvudbalkarna är via ståndare, av vilka en visas med 24, förbundna med tvärreglar, exempelvis 22 och 23, vilka i sin tur medelst stålband eller liknande är fixerade vid flytrin- garna, exempelvis 9 och 9'. därigenom ernås att flytringarna 9, 9' etc blir sinsemellan förbundna orörliga i vågrät riktning och därmed agerar flytringarna såsom i vâgplanet eller horisontalplanet inbördes väsent- ligen stelt förbundna flytkroppar. Vidare har genom nämnda uppbyggnad av trallen 27 ernåtts att bildäcken får tillräcklig frigång under trallen 27.The weighing pier shown in Fig. 3 may be provided with a pallet guard and / or mooring system for boats and the construction of a pallet is shown in Figs. 4 and 5. The pallet 27 rests on longitudinal main beams, one of which is indicated by the reference numeral 28. The main beams are via posts, one of which is shown with 24, connected by crossbars, for example 22 and 23, which in turn are fixed to the floating rings by means of steel bands or the like, for example 9 and 9 '. thereby it is achieved that the floating rings 9, 9 'etc. become interconnected immobile in the horizontal direction and thus the floating rings act as in the wave plane or the horizontal plane substantially substantially rigidly connected floating bodies. Furthermore, through said construction of the trolley 27, it has been achieved that the car tires have sufficient clearance under the trolley 27.

I stället för att förbinda flytkropparna 9 etc stelt i vågplanet kan flytkropparna vara stelt förbundna inbördes i sektioner motsvarande läng- den av de vågor man önskar bryta ned.Instead of connecting the floating bodies 9, etc. rigidly in the wave plane, the floating bodies can be rigidly connected to each other in sections corresponding to the length of the waves which it is desired to break down.

Vid det vågdämpande elementet enligt föreliggande uppfinning ernår man - genom förläggning av flytkraften till flytringen - dessutom för- delen att de däcksöverdelar, vilka eventuellt har fyllts med vatten genom virvelströmmar eller dylikt, kommer att tömmas när de lyfts upp ur vatt- net av flytringen då vågdämpningselementet passerar en vågdal. ss ,The wave-damping element according to the present invention also has the advantage - by placing the buoyancy force to the floating ring - of the advantage that the deck upper parts, which may have been filled with water by eddy currents or the like, will be emptied when they are lifted out of the water by the floating ring. the wave attenuation element passes a wave valley. ss,

Claims

05 10 15 20 25 30 35 l 780579244? 4 PATENT CLAIMS '

Wave-damping elements, which comprise discarded car tires or the like, substantially circular and preferably elastic devices, which are placed on a vertical edge in the water and which are interconnected by bands or similar details and which in principle lack their own buoyancy, which devices ( 10-19) are enclosed by and connected to and mainly fill the space inside a closed floating body (s). _ _ _ _ k'ä n n_e t e c k n a t of the fact that the floating body (9) is formed with one. buoyancy force that it floats at a higher level in the water than said devices (10-19) do, and that the size of said buoyancy body (9) and the number of devices (10-19) together with their dimensions are so selected that the buoyancy body (9 ) forms a restriction for said devices (10-19) when they at the sea level rise strive to move up towards said higher level and thus the friction is increased partly between said devices (10-19) relative to each other and partly between said devices (10-19 ) and the float (9).

2. Wave damping elements according to claim 1, characterized in that said devices (10-19) are designed so that they are deformed during the current sea level rise both in the vertical and in the horizontal direction. ”_

Wave damping element according to claim 1 or 2, characterized in that the floating body (9) is threaded through a first number of devices (1-8), which by means of said bands (20, 21) or similar details are connected to a second subset of devices (10-19).

Wave damping element according to one of the preceding claims, characterized in that the floating body (9) consists of a tube laid in a circle, the ends of which are joined together to form a closed cavity.

Wave damping element according to one of the preceding claims, characterized in that the stiffness and size of the floating body (9) and the number of devices are adapted to the maximum wave size that K intends to dampen. K _

Wave damping element, which comprises two or more elements according to any one of the preceding claims, "characterized in that the floating bodies (9, 9 ', ...) are mutually rigidly connected in a horizontal direction.

Wave damping element according to claim 6, characterized in that said rigid connection is effected by means of beams (22-24) located on the elements, which are positioned in a horizontal direction, which are so placed that the movements of said devices (10-19) are not hindered by the beams (22-24). REQUEST PUBLICATIONS: DE 2 433 976 (EDZB 3/06) US 3 357 192 (61-5)