SE200099C1

SE200099C1 -

Info

Publication number: SE200099C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: U Finsterwalder Prioritet begard Iran den 1 december 1956 (Forbundsrepubliken Tyskland) Foreliggande uppfinning avser en anordning vid sadana for framstallning av hangande tak avsedda plattor av armerad betong, som aro forsedda med sidoutsprang, avsedda att vita pa mellan tva eller flera vederlag eller stod anordnade barlinor, varvid fogarna mellan plattorna och barlinorna tillslutas med cement och de i langdriktningen rorligt anordnade barlinorna spannas efter cementens hardnande. Inventor: U Finsterwalder Priority requested from Iran on 1 December 1956 (Federal Republic of Germany) arranged bar lines, wherein the joints between the plates and the bar lines are closed with cement and the bar lines arranged in the longitudinal direction are tensioned after the cement has hardened.

Sadana hangancle tak aro kanda, vid vilka barkonstruktionen bestar av tradlinor. FOr att pa ett dylikt tradnat fasta ett betongskaI erfordras en joke hangande form och speciella anstalter vid anbringandet av betongen, enar annars pa grund av ojamnheter vid betongens anbringande sprickor kunna uppsta i taket. Darfor har det redan fOreslagits att fortlopande efterspanna tradlinorna under gjutningen. Ett dylikt forfarande är dock tidskravande och dyrbart. Forutom dylika hangande tak aro aven sadana av spannbetong utforda tak tidigare kanda. En dylik takkonstruktion har fordelen av en betydligt storre styvhet, sit att formforandringar pit grund av den normala belastningen, sub och vind aro betydligt mindre an vid sadana tak, dar barkonstruktionen utgores av tradlinor. Vid hittills kanda hangande tak av armerad betong har emellertid det hangande valvet forsetts med en fast anordnad understallning, enar man joke ansett det mojligt att pa ett tillfredsstallande satt utfora betongommantligen av fritt hangande linor utan stallning. Sadana hangancle tak aro kanda, at which the bar construction consists of wire ropes. In order for a concrete shell to be fixed on such a wire, a jockey hanging form and special devices are required when applying the concrete, otherwise due to irregularities in the application of the concrete cracks may arise in the roof. Therefore, it has already been proposed to continuously retighten the wire lines during casting. However, such a procedure is time consuming and expensive. In addition to such suspended ceilings, such aerated concrete also challenges roofs previously known. Such a roof construction has the advantage of a much greater rigidity, due to the fact that shape changes due to the normal load, sub and wind are much smaller than with such roofs, where the bar construction consists of wire ropes. In the case of hitherto known suspended ceilings of reinforced concrete, however, the suspended vault has been continued with a fixed arrangement, if one jokes it has been considered possible to perform in a satisfactory manner the concrete frame of freely hanging ropes without stalling.

FOreliggande uppfinning kannetecknas i huvudsak darav, att dels de armerade betongplattornas for upplaggningen pa barlinorna tjanande sidoutsprang, omvaxla med nischer, varvid plattorna aro sit anordnade, att sido utsprangen och nischerna hos angransande plattor ligga mitt f6r varandra, dels sidoutsprangen vid undersidan aro utforda med fOretritdesvis avrundade spar for upptagande av barlinorna och dels i nyssnamnda nischer frail plattornas kanter utskjutande joke fOrspanda, sekundara armeringsinlagg aro forbundna med barlinorna. The present invention is mainly characterized in that on the one hand the reinforced concrete slabs serving for the support on the bar lines alternate with niches, the slabs being arranged, that the side protrusions and the niches of adjacent slabs lie opposite each other, and on the other hand the side protrusions at the bottom are challenged. rounded spades for receiving the bar lines and partly in the just mentioned niches frail the edges of the plates projecting joke fOrspanda, secondary reinforcement inserts aro connected to the bar lines.

Uppfinningen kannetecknas vidare enligt en lamplig utforingsform av att dels plattorna aro anordnade med de mot barlinorna anliggande kanterna belagna pa avstand frau varandra, dels i mellanrummet mellan plattorna ar anordnad en joke fOrspand armoring, dels mellanrummet ar utfyllt med betong, som aven omsluter de under plattorna liggande barlinorna. Inuti nischarna aro de ur plattorna utskjutande armeringsinlaggen, barlinorna och den i mellanrummet mellan plattorna anordnade icke forspanda armeringen forbundna medelst byglar. The invention can furthermore be characterized according to a suitable embodiment in that partly the plates are arranged with the edges abutting against the bar lines spaced apart from each other, partly in the space between the plates arranged a joke for prestressed reinforcement, partly the space is filled with concrete, which also encloses those under the plates horizontal barlines. Inside the niches, the reinforcement inserts projecting from the plates, the bar lines and the non-prestressed reinforcement arranged in the space between the plates are connected by means of stirrups.

Vidare maste en del av armeringsinlaggen skjuta ut frail plattornas sidokanter i Mlnbisform, varvid dessa armeringsinlagg vid Mot varandra stotande plattor aro forbundna med varandra medelst tradslingor. Furthermore, a part of the reinforcement inserts must protrude from the side edges of the plates in Mlnbis form, these reinforcement inserts at abutting plates being connected to each other by means of wire loops.

Barlinornas langd installes sit vid anbringandet av desamma ph stoden, att under belastningen exakt den genomgang uppstar, som onskas for varje sarskild barlina. Barlinoma, de armerade betongplattoma och fogcementen maste stit i sadan fOrbindelse, att en. utbojning av de genom forspanningskrafter wider tryck satta betongdelarna forhindras. The length of the bar lines is installed during the application of the same pH method, so that during the load exactly the passage occurs, which is desired for each particular bar line. Barlinoma, the reinforced concrete slabs and the joint cement must stand in such a connection that a. deflection of the concrete parts pressurized by prestressing forces wider is prevented.

FOrdelen med anvandandet av de enligt uppfinningen utformade plattorna ligger dari, att stallningar och darmed en vasentlig del av de for byggandet av hangande tak forbundna kostnaderna kunna inbesparas. Hartill kom- Dupl. kL 37 b: 2/01 2— -- mer mojligheten av att framstalla plattorna fabriksmassigt, varigenom framstallningen blir helt oberoende av radande vaderleksforhallanden. The advantage of using the tiles designed according to the invention lies in the fact that stalls and thus a significant part of the costs associated with the construction of suspended roofs can be saved. Hartill kom- Dupl. kL 37 b: 2/01 2— - more the possibility of producing the tiles factory-made, whereby the production becomes completely independent of radiating weather conditions.

Uppfinningen kommer att fOrklaras narmare nedan med hanvisning till de bifogade ritningarna. The invention will be explained in more detail below with reference to the accompanying drawings.

Fig. 1 visar i langdgenomskarning ett hangtak enligt uppfinningen innan fogarna fyllts med bruk och innan barlinorna spants; Fig. 2 visar en del av detta tak i planvy; Fig. 3 visar i storre skala och i planvy en utforingsform av en armerad betongplatta for ett hangtak enligt uppfinningen; Fig. 4 visar en genomskarning utmed linjen A—A i fig. 3; Fig. 5 visar en genomskarning utmed linjen i fig. 3; Fig. 6 visar i stOrre skala ett tvarsnitt av taket pa ett stalle, dar tva plattor vila pa barlinorna; Fig. 7 visar ett tvarsnitt genom tva mot varandra stotande plattor, sett i takets langdriktning. Fig. 1 shows in longitudinal section a suspended roof according to the invention before the joints have been filled with mortar and before the bar lines have been strung; Fig. 2 shows a part of this roof in plan view; Fig. 3 shows on a larger scale and in plan view an embodiment of a reinforced concrete slab for a suspended roof according to the invention; Fig. 4 shows a section along the line A-A in Fig. 3; Fig. 5 shows a section along the line in Fig. 3; Fig. 6 shows on a larger scale a cross section of the roof of a stable, where two plates rest on the bar lines; Fig. 7 shows a cross section through two abutting plates, seen in the longitudinal direction of the roof.

Det sasom helhet med 1 betecknade hangtaket är uppspant mellan bakat medelst linor eller dragstravor 7 forankrade stottor 2. I och med framstallningen av dragstravorna 7 och de lodrata stOttorna 2 gjutes aven de Ovre, stottorna 2 forbindande kantbalkarna 8. kantbalkamas 8 armering inhangas barlinorna 3 parvis. Sedan dessa delar upprattats forspannas dragstravorna 7. The suspension roof, designated as a whole by 1, is suspended between beams 2 anchored by means of ropes or drawstrings 7. As a result of the production of the drawbars 7 and the vertical supports 2, the upper beams 8 connecting the supporting beams 2 are also cast. . After these parts have been set up, the drawstrings are prestressed 7.

De armerade betongplattorna 4 framstallas fabriksmassigt. De arc forsedda med en korsvis anordnad, i tva lager utford, 'Os armering. Plattorna aro utmed tva parallella kanter utformade med utsprang 15, som pa undersidan aro fOrsedda med avrundade spar 16 och vita pa barlinorna 3. For plattomas fastsattning vid barlinorna utnyttjas frau plattorna utskjutande stalinlagg 14. Vidare aro de vinkelratt mot de rued utsprangen 15 forsedda kanterna gaende armeringsinlaggen 5 ombockade i form av slingor (fig. 6) vilka utskjuta i de mellan utsprangen bildade nischerna 20. Omkring de fran plattorna utskjutande armeringsorganen 5, plattmellanrummets 17 lost inlagda armering 11 och barlinorna 3 arc anordnade byglar 10. The reinforced concrete slabs 4 are manufactured at the factory. The arc provided with a crosswise arranged, in two layers challenge, 'Os reinforcement. The plates are along two parallel edges formed with projections 15, which on the underside are provided with rounded grooves 16 and white on the bar lines 3. For the plates to be attached to the bar lines, steel inserts 14 are used from the plates. Furthermore, they are perpendicular to the red projections 15. the reinforcing inserts 5 folded in the form of loops (Fig. 6) which project into the niches formed between the projections 20. Around the reinforcing members 5 projecting from the plates, the loosely inserted reinforcement 11 of the plate space 17 and the bar rails 3 arc arranged.

I takets langdriktning, dvs. vinkelratt mot barlinorna 3 arc plattorna 4 pa oversidan och utmed kanterna forsedda med urtagningar 18 (fig. 7), som i tvarsnitt ha formen av en cirkelkvadrant. Den av urtagningama i tvà mot varandra stOtande plattor bildade rannan innehaller ett eller flera langsgaende spannorgan 19 och rannan är fylld med betong. In the longitudinal direction of the roof, ie. perpendicular to the bar lines 3 arc the plates 4 on the upper side and along the edges provided with recesses 18 (Fig. 7), which in cross section have the shape of a circular quadrant. The gutter formed by the recesses in two abutting plates contains one or more longitudinal clamping members 19 and the gutter is filled with concrete.

Betongplattomas utlaggande borjar vid takets djupaste stalle och fortsattes likformigt i hada riktningarna. Plattorna laggas pa barlinorna 3, pa sadant satt, att barlinorna ingripa i utsprangens spar 16. Sedan halve taket uppIagts maste de enskilda plattraderna riktas, sa att taket i langdriktningen erhaller ett foreskrivet fall med hansyn till avvattningen. En viss fininstallning av plattradema är mojlig genom att barlinoma 3 spannas. Plattraderna aro annu icke forbundna med kantbalkarna 8, varfor barlinornas 3 spannande medfor en lyftning eller sankning av taket. The laying of the concrete slabs begins at the deepest stable of the roof and continued uniformly in the same directions. The tiles are laid on the bar lines 3, in such a way that the bar lines intervene in the groove 16 of the projections. A certain fine installation of the plate rows is possible by tightening the barlines 3. The rows of plates are not yet connected to the edge beams 8, so that the tensioning of the bar lines 3 entails a raising or lowering of the roof.

Sedan samtliga plattor upplagts tillslutas fogarna mellan plattorna medelst bruk och sedan fogbruket stelnat spannas barlinorna 3. After all the tiles have been laid, the joints between the tiles are closed by means of mortar and after the joint mortar has solidified, the bar lines 3 are tightened.

Forspanningskrafterna aro sa stora, att man icke ens vid full belastning av snO erhaller nagra dragspanningar i plattorna. The prestressing forces are so great that even at full load of snO no tensile stresses are obtained in the plates.

Claims

Patent claim:

1. Apparatus for the manufacture of reinforced concrete slabs intended for the manufacture of suspended ceilings, which are provided with side projections, intended to be whitewashed between two or more recesses or bar rails arranged, the joints between the slabs and the bar ropes being closed with cement and the longitudinally movable arranged bar lines are tensioned after the cement has hardened, characterized in that on the one hand the side projections (15) of the reinforced concrete slabs (4) for laying on the bar lines (3) alternate with niches (20), the plates being arranged so that the side projections (15) and the niches (20) of adjacent plates lie opposite each other, partly the lateral projections at the underside are challenged with preferably rounded grooves (16) for receiving the bead lines (3) and partly in the just mentioned niches from the edges of the platforms projecting non-biased, secondary reinforcement inserts (14) connected to the barlines (3).

Device according to claim 1, characterized in that on the one hand the plates (4) are arranged with the edges abutting against the edges of the barrels (3). distance Iran from each other, partly in the space (17) between the plat-tome is arranged a non-prestressed reinforcement (11), partly the space (17) is filled with concrete, which also encloses the bar lines under the plates.

Device according to claim 2, characterized in that inside the niches (20) arc the reinforcing inserts (14) projecting from the plates, the barlinas (3) and the non-prestressed reinforcement (11) arranged in the space (17) between the plates are connected by means of stirrups ( 10).

Device according to any one of patent claims 1-3, characterized in that reinforcement inserts (5) project from the side edges of the plates in the form of harnesses, these reinforcement inserts being connected to each other by abutting loops (12) at abutting plates. - -

5. Device according to any one of claims 1-4, characterized in that the plates (4) at the edges perpendicular to the curves (3) are drawn provided with raised and fitted sides open and in cross-section approximately circular quadrant-shaped recesses (18), the the recess (18) formed in two abutting plates forming the gutter contains one or more prestressing means (19) going in the longitudinal direction of the gutter and there filled with concrete. Previous publications: Patents from the United Kingdom 807 567. Other publications: Otto, F, Das hangende Dach, Berlin 1954, p. 68 ff.