DK172307B1 - Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith - Google Patents

Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith Download PDF

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Publication number
DK172307B1
DK172307B1 DK068093A DK68093A DK172307B1 DK 172307 B1 DK172307 B1 DK 172307B1 DK 068093 A DK068093 A DK 068093A DK 68093 A DK68093 A DK 68093A DK 172307 B1 DK172307 B1 DK 172307B1
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Denmark
Prior art keywords
formwork
reinforcement
tensioned
double
supporting
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DK068093A
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Danish (da)
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DK68093A (en
DK68093D0 (en
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Joergen Illner Breuning
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Joergen Illner Breuning
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Priority to DK068093A priority Critical patent/DK172307B1/en
Publication of DK68093D0 publication Critical patent/DK68093D0/en
Priority to AU69694/94A priority patent/AU6969494A/en
Priority to PL94311954A priority patent/PL173565B1/en
Priority to PCT/DK1994/000231 priority patent/WO1994029541A1/en
Priority to ZA944087A priority patent/ZA944087B/en
Publication of DK68093A publication Critical patent/DK68093A/en
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Publication of DK172307B1 publication Critical patent/DK172307B1/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
    • E04B5/328—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements the filling elements being spherical
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E04B5/40—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element with metal form-slabs
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Reinforcement Elements For Buildings (AREA)

Description

i.in.

DK 172307 B1DK 172307 B1

DOBBELTSPÆNDT SELVBÆRENDE ARMERINGSFORSKALLING -OG BETONDÆK UDFØRT HERMEDDOUBLE-TENSED SELF-LOADING REARING FORM AND CONCRETE TIRE DONE

Opfindelsen angår en dobbeltspændt (2-akset) betonarmering fremstillet af prefabrikerede maskinsvejste net af krydsende armeringsstænger og et betondæk udført hermed.The invention relates to a double-tensioned (2-axis) concrete reinforcement made of prefabricated machine-welded mesh of intersecting reinforcing bars and a concrete deck made therewith.

Opfindelsen er en del af en samlet opfindelse omkring dobbeltspændte betondæk.The invention is part of an overall invention around double-stressed concrete tires.

5 1. del er tidligere patentanmeldt (patent DK 166462).5 The first part is previously patent-pending (patent DK 166462).

Teknisk baggrundTechnical background

Det in situ støbte kontinuerlige betondæk er vel nok alt taget i betragtning verdens bedste og bredest anvendelige dækkonstruktion. Desværre lider konstruktionen under et dyrt og tidskrævende armerings- og forskallingsarbejde. En tiltrængt industrialisering 10 er kun delvis lykkedes for enkeltspændte dæk, aldrig for dobbeltspændte. En metode til at mindske forskallingsarbejdet ved enkeltspændte dæk er anvendelse af indbyggede/ permanente forskallingsflader. Herunder er det kendt at anvende tynde stålprofilplader som permanent forskalling og som armering.The in situ cast continuous concrete deck is probably all the best considering the world's best and most widely used tire construction. Unfortunately, the construction suffers from an expensive and time-consuming reinforcement and formwork work. A much needed industrialization 10 has only partially succeeded for single-clamped tires, never for double-clamped tires. One method of reducing the formwork work on single-tensioned tires is the use of built-in / permanent formwork surfaces. Below, it is known to use thin steel profile sheets as permanent formwork and as reinforcement.

Metoderne fordeler sig i 2 hovedgrupper : 15 1. Stålpanelerne anvendes alene som forskalling - uafhængig af armeringen.The methods are divided into two main groups: 15 1. The steel panels are used only for formwork - independent of the reinforcement.

Gruppen er således uinteressant i denne sammenhæng.The group is thus unattractive in this context.

2. Stålpanelerne udnyttes som kombineret forskalling og armering.2. The steel panels are utilized as combined formwork and reinforcement.

Systemet er mest udbredt i USA, inden for Europa især anvendt i Sverige.The system is most widespread in the United States, within Europe especially used in Sweden.

De kendte metoder giver imidlertid kun mulighed for enkeltspændte dæk.However, the known methods only allow for single-tensioned tires.

20 Det er ikke muligt på realistisk måde at etablere en fastholdt tværarmering.20 It is not possible in a realistic way to establish a sustained cross-armor.

Denne kan ikke bindes til profilerne, og den kan ikke svejses manuelt på stedet, fordi der ville ske en gennembrænding af de tynde profiler. I øvrigt ville en sådan udførelse være total irrationel og dermed også økonomisk ugennemførlig.This cannot be bonded to the profiles and it cannot be welded manually on site because the thin profiles would be pierced. Moreover, such an execution would be totally irrational and thus also economically unworkable.

I første gruppe kan man finde tysk patentansøgning DE 21 10 913, hvor profiler 25 virker som forskalling og underlag for tværgående løs enkeltspændt armering.In the first group you can find German patent application DE 21 10 913, in which profiles 25 act as formwork and support for transversely loose single-tensioned reinforcement.

Det kan tilføjes, at stålprofilerne ville være uanvendelig selv til enkeltspændte dæk, idet den 100% fri ståloverflade ikke kan tillægges nogen bærende virkning allerede under hensyn til brand.It can be added that the steel profiles would be unusable even for single-tensioned tires, since the 100% free steel surface cannot be added to any load bearing effect even in the event of fire.

I den anden gruppe kan man finde patentansøgningerne DE 26 04 998 og DE 30 12 45 565, US 3,238,681 samt FR 1.249.543 og FR 1.152.818. I alle tilfælde er tale om idéer til rene enkeltspændte konstruktioner. (I nogle tilfælde er indikeret en fordelingsarmering, men i ingen af tilfældene vil den kunne udføres i virkeligheden).In the second group can be found patent applications DE 26 04 998 and DE 30 12 45 565, US 3,238,681 and FR 1,249,543 and FR 1,152,818. In all cases, these are ideas for pure single-tensioned designs. (In some cases a distribution reinforcement is indicated, but in no case will it be possible in reality).

Endvidere fremdrages tysk patentansøgning DE 25 17 485 med en vis synsmæssig 35 lighed men uden nogen forbindelse, idet der er tale om et omstøbt stålbjælkedæk og ikke et jernbetondæk.Furthermore, German patent application DE 25 17 485 is presented with a certain visual similarity but without any connection, since it is a cast steel beam deck and not a concrete concrete deck.

Den manglende teknik betyder, at man stadig i stor udstrækning nøjes med det statisk ringere enkeltspændte dæk, selv hvor et dobbeltspændt dæk klart ville være mere egnet.The lack of technique means that the statically inferior single-tensioned tire is still largely satisfied, even where a double-tensioned tire would clearly be more suitable.

En realistisk 2-dimensional løsning vil kun kunne tilvejebringes i form af industrielt 40 forarbejdede færdige enheder(elementer) udført ved styret maskinsvejsning, hvorfor en ny udvikling må tage udgangspunkt i maskinindustriens produktionsmuligheder.A realistic 2-dimensional solution can only be provided in the form of industrially 40 processed finished units (elements) made by controlled machine welding, so a new development must be based on the production possibilities of the machine industry.

2.2nd

DK 172307 B1DK 172307 B1

Opfindelsen.Invention.

Ved opfindelsen tilvejebringes et prefabrikeret stabilt armeringselement der uden at forøge stålmængden virker som både krydsarmering, forskalling og færdigt loft. Opfindelsen betyder ikke blot en forbedring af en enkelt proces, men en elimination af 5 en række processer på een gang, idet de tidligere traditionelle manuelle udførelsesprocesser er samlet i een enkelt maskinforarbejdet konstruktion til direkte montage på pladsen.The invention provides a prefabricated stable reinforcing element which, without increasing the amount of steel, acts as both cross-reinforcement, formwork and finished ceiling. The invention not only means an improvement of a single process, but an elimination of a number of processes at once, since the previous traditional manual execution processes are combined into a single machine-machined design for direct mounting on the site.

Konstruktionen kan udføres 100% pr automatik ved en ubetydelig ændring af de i dag kendte maskiner for svejsning af traditionelle armeringsnet, og konstruktionen kan 10 leveres som prefabrikerede elementer i størrelser op til 40-50 m2.The construction can be performed 100% by automatic by a minor modification of the machines known today for welding traditional reinforcement networks, and the construction can be delivered as prefabricated elements in sizes up to 40-50 m2.

Gennem den maskinelle produktion opnås tillige en langt mere nøjagtig, stabil og kvalitetssikret konstruktion, der eliminerer ukontrollable processer og tidstab.Machinery production also achieves a much more accurate, stable and quality-assured design that eliminates uncontrollable processes and time losses.

Betydningen for dobbeltspændte konstruktioner er ganske eksceptionel, idet den horizontale forskalling (bund), der traditionelt udgør 2/3 af forskallingsprisen kan 15 elimineres.The importance of double-tensioned structures is quite exceptional, as the horizontal formwork (bottom), which traditionally represents 2/3 of the formwork price, can be eliminated.

Endvidere er konstruktionen i vid udstrækning selvbærende i bundprofilernes længderetning, hvorved også den vertikale formunderstøtning kan reduceres væsentligt.Furthermore, the structure is largely self-supporting in the longitudinal direction of the bottom profiles, whereby also the vertical mold support can be substantially reduced.

Og ikke mindst er de stabile og nøjagtige elementer uhyre simple at montere (støde), så det resterende in situ arbejde kan udføres med reduceret og uuddannet personel.And not least, the stable and accurate elements are extremely simple to assemble (bump), so that the remaining in situ work can be done with reduced and untrained personnel.

20 Analyser har vist en besparelse i det færdige dæk af størrelsen 20-30%.20 Analyzes have shown a saving in the finished tire of size 20-30%.

Nævnte virkninger er opnået gennem opfindelsen af den “dobbeltspændte selvbærende armeringsforskalling “ kendetegnet ved, at et traditionelt svejst armeringsnet ændres på en sådan måde, at det nedre trådlag transformeres til tyndpladeprofiler med samme ståltværsnit (“udvalsede tråde”) og med ribber i det oprindelige netmodul.Said effects are achieved through the invention of the "double-tensioned self-supporting reinforcement formwork" characterized in that a traditional welded reinforcement mesh is changed in such a way that the lower wire layer is transformed into thin-plate profiles with the same steel cross-section ("rolled threads") and with ribs in the original grid module .

25 Den herved frembragte svejste dobbeltspændte armering vil på den ene side have normale åbne masker, dannet af øvre trådlag og ribber i profillaget og dermed adgang for betonpassage og fuld betonudstøbning, og på den anden side have en underliggende plan sammenhængende stålflade, som ud over den normale 2-aksede armeringsfunktion tillige virker som forskalling og loft.25 The resulting welded double-tensioned reinforcement will, on the one hand, have normal open meshes formed by upper wire layers and ribs in the profile layer and thus access for concrete passage and full concrete casting, and on the other hand have an underlying flat coherent steel surface which, in addition to the normal 2-axis reinforcement function also acts as formwork and ceiling.

30 Profilets geometri er således tilpasset, at i tilfælde af brand kan man se bort fra den fritliggende pladebund, idet de fuldt indstøbte ribber er tilstrækkelige til at sikre bæreevne i henhold til aktuelle brandkrav.30 The geometry of the profile is adapted so that in case of fire, the exposed plate bottom can be disregarded, the fully embedded ribs being sufficient to ensure carrying capacity according to current fire requirements.

Profilernes ribbehøjde kan varieres under hensyn til bæreevne, brandsikkerhed, afstand af mellemunderstøninger m.v., ligesom bæreevnen kan forstærkes ved filigranbjælker i 35 rand.The rib height of the profiles can be varied according to bearing capacity, fire safety, distance of intermediate supports, etc., as well as the bearing capacity can be enhanced by filigree beams in 35 rim.

I en variant (krav 2) egnet for kraftige massive dæk og store spændvidder dannes en rumlig dobbeltspændt armeringsforskalling ved, at konstruktionen udføres som et rumgitterelement med oversidearmering båret af filigranbjælker i dækhøjde svejst til armeringsforskallingen.In a variant (claim 2) suitable for heavy solid tires and large widths, a spatially double-tensioned reinforcement formwork is formed by the construction being carried out as a space grating element with top reinforcement supported by tire height filigree beams welded to the reinforcement formwork.

40 I en særlig variant (krav 3) til huldæk dannes en rumlig dobbeltspændt armeringsforskalling ved indbygning af kugleformede hule legemer (delopfindelse, opfinderens eget patent DK 166462).In a special variant (claim 3) for hollow decks, a spatial double-tensioned reinforcement formwork is formed by incorporation of spherical hollow bodies (part invention, inventor's own patent DK 166462).

Herved opnås en universalkonstruktion, en selvbærende total gitterkomposition i stål og plast(luft), indeholdende alle aktuelle og ønskede dækkonstruktionskomponenter bortset 45 fra beton, nemlig både forskalling, armering, lufthulrum og loftoverflade, alt samlet i en fastlåst geometrisk industrialisérbar helhed, der kan udføres i fuldautomatisk produktion.This provides a universal structure, a self-supporting total steel and plastic (air) lattice composition, containing all current and desired tire construction components except 45, namely both formwork, reinforcement, air cavities and ceiling surface, all assembled into a fixed geometrically industrializable unit that can be executed in fully automatic production.

3.Third

DK 172307 B1DK 172307 B1

Opfindelsen forklares nærmere i det følgende under henvisning til tegninger, hvor der som illustration er valgt den mest udviklede konstruktion huldækket,og hvor fig. 1 viser princip i produktopbygning fig. 2-7 viser eksempel på indbygning i færdig konstruktion (huldæk) 5 fig. 2 viser tværsnit af element og indre stød fig. 3 viser tværsnit af element ved rand fig. 4 viser længdesnit af element og indre stød fig. 5 viser længdesnit af element ved rand fig. 6 viser plan af elementer og indre stød 10 fig. 7 viser plan af element med randforskalling fig. 8 viser foto af element set oppe fra fig. 9 viser foto af element set neden fra, halv underside hvidmaletThe invention will be explained in more detail below with reference to drawings in which, by way of illustration, the most developed structure is the hollow deck, and in which fig. 1 shows principle in product design fig. 2-7 shows example of installation in finished construction (hollow deck) 5 fig. 2 is a cross-sectional view of element and inner impact; FIG. 3 shows cross section of element at edge FIG. 4 is a longitudinal sectional view of element and internal impact; FIG. 5 shows longitudinal section of element at edge FIG. 6 shows plane of elements and internal shock 10 fig. 7 shows plan of element with edge formwork fig. 8 shows a photo of element seen from above in FIG. 9 shows photo of element seen from below, half underside white painted

Den dobbeltspændte armeringsforskalling fig.l er opbygget helt analog til sædvanlige svejste armeringsnet og ved hjælp af samme svejsemaskinel, hvor maskinopbygningen 15 er ændret til at modtage pladeprofiler i stedet for armeringsstænger.The double-tensioned reinforcement formwork Fig. 1 is constructed entirely analogous to conventional welded reinforcing grids and by the same welding machine, where the machine structure 15 is changed to receive plate profiles instead of reinforcing bars.

Den færdige armeringsforskalling (10) består således nederst af en bund af profilplade eller parallelle tætstillede profilkassetter af tyndplade (11) sammensvejst (13) med en række tværgående traditionelle armeringsstænger (12) øverst. Profilerne udformes med ribber (14) svarende til den tværgående armering, eksempelvis det benyttede simple 20 C-profil som vist påtegningen men andre udformninger vil være mulige og egnede, f.eks. vil det være muligt at udforme profilet til indlæg af udvendig brandisolering eller indvendigt skruevenligt befæstelses materiale.The finished reinforcement formwork (10) thus consists at the bottom of a bottom of profile plate or parallel sealed profile cassettes of thin plate (11) welded together (13) with a series of transverse traditional reinforcing bars (12) at the top. The profiles are formed with ribs (14) corresponding to the transverse reinforcement, for example the simple 20 C profile used as shown on the endorsement, but other designs will be possible and suitable, e.g. it will be possible to design the profile for inserts of external fire insulation or internally screw-friendly fastening material.

I fig. 2-7 illustreres en rumlig armeringsforskalling med udstøbt huldæk.In FIG. 2-7 illustrate a spatial reinforcement formwork with molded hollow deck.

Boblerne (23) hviler direkte i armeringsforskallingen (10). I den viste udformning er 25 armeringselementerne samlet over et løst profil (18) identisk med (11). Elementerne afstives i hver side af en filigrangitterbjælke (21), som er svejst til undernet (12) og overnet (22), og som bærer både ved transport og ved udstøbning af beton (15). Forskallingen kan gøres fuldstændig, også i prefabrikeret udførelse, ved at lukke yderelementer med sider af påsvejste profiler analogt til dækprofiler, f.eks. sideprofil 30 (16) og endeprofil (17).The bubbles (23) rest directly in the reinforcement formwork (10). In the embodiment shown, the 25 reinforcing elements are assembled over a loose profile (18) identical to (11). The elements are supported on each side by a filigree lattice beam (21) which is welded to the subnet (12) and the overnet (22) and which supports both during transport and when casting concrete (15). The formwork can be made complete, even in prefabricated design, by closing outer elements with sides of welded profiles analogous to tire profiles, e.g. side profile 30 (16) and end profile (17).

Claims (5)

1. Plant armeringsnet bestående af to lag krydsende industrielt sammensvejste armeringsstænger, kendetegnet ved, at det nedre armeringslag er udformet som kassetter af tyndplade således, at der opnås en selvbærende dobbeltspændt armeringsforskalling (10), på den ene side med normale åbne netmasker dannet af øvre armeringsstænger (12) og de bærende ribber (14) i tyndpladen og dermed fuld passage for betonen (15) og på den anden side med en underliggende plan sammenhængende stålflade (11,14), som ud over den normale oprindelige 2-aksede armeringsfunktion tillige virker som forskalling og færdigt loft.1. A reinforcement mesh consisting of two layers of intersecting industrial welded reinforcing bars, characterized in that the lower reinforcing layer is formed as thin-plate cassettes to obtain a self-supporting double-tensioned reinforcement formwork (10), on one side with normal open meshes formed by upper reinforcing bars (12) and the supporting ribs (14) in the thin plate and thus full passage for the concrete (15) and, on the other hand, with an underlying planar coherent steel surface (11,14) which, in addition to the normal original 2-axis reinforcing function, acts as formwork and finished ceiling. 2. Rumlig dobbeltspændt selvbærende armeringsforskalling ifølge krav 1, kendetegnet ved, at konstruktionen udformes som rumgitter med overnet (22) på bærende fil i granbjælker (21) svejst til armeringsforskallingen. (Massive dæk).Spatial double-tensioned self-supporting reinforcement formwork according to claim 1, characterized in that the structure is designed as a space grille with a net (22) on supporting file in spruce beams (21) welded to the reinforcement formwork. (Solid Tires). 3. Rumlig dobbeltspændt armeringsforskalling med indbygget luft iflg. krav 1-2, kendetegnet ved, at kugleformede hule legemer (23) indbygges mellem overnet og forskallingsarmering. (Huldæk).3. Spatial double-tensioned reinforcement formwork with built-in air according to. Claims 1-2, characterized in that spherical hollow bodies (23) are incorporated between the upper mesh and formwork reinforcement. (Hollow core slabs). 4. Rumlig dobbeltspændt armeringsforskalling iflg. krav 1-3, kendetegnet ved, at profilfladen opbygges som en betonflade med delvist nedfældede indstøbte armeringsstænger som ribber.4. Spatial double-tensioned reinforcement formwork according to. claims 1-3, characterized in that the profile surface is built up as a concrete surface with partially folded embedded reinforcing bars as ribs. 4. DK 172307 B14. DK 172307 B1 5. Plane betondæk udført med armeringsforskalling ifølge krav 1-4.A flat concrete deck made of reinforcement formwork according to claims 1-4.
DK068093A 1993-06-10 1993-06-10 Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith DK172307B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DK068093A DK172307B1 (en) 1993-06-10 1993-06-10 Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith
AU69694/94A AU6969494A (en) 1993-06-10 1994-06-10 Two-way self-supporting reinforcement formwork
PL94311954A PL173565B1 (en) 1993-06-10 1994-06-10 Rigid cross-braced reinforcement combined with boarding
PCT/DK1994/000231 WO1994029541A1 (en) 1993-06-10 1994-06-10 Two-way self-supporting reinforcement formwork
ZA944087A ZA944087B (en) 1993-06-10 1994-06-10 Self supporting formwork with two-dimentional reinforcement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK68093 1993-06-10
DK068093A DK172307B1 (en) 1993-06-10 1993-06-10 Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith

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DK68093D0 DK68093D0 (en) 1993-06-10
DK68093A DK68093A (en) 1994-12-11
DK172307B1 true DK172307B1 (en) 1998-03-09

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DK068093A DK172307B1 (en) 1993-06-10 1993-06-10 Double-tensioned self-supporting reinforcement formwork - and concrete decks made herewith

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AU (1) AU6969494A (en)
DK (1) DK172307B1 (en)
PL (1) PL173565B1 (en)
WO (1) WO1994029541A1 (en)
ZA (1) ZA944087B (en)

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CN102449248A (en) * 2009-05-15 2012-05-09 杜得胜 Steel reinforcement structure of bubbledeck slab elements and procedure of manufacturing bubbledeck slab elements
CN111379378A (en) * 2020-01-07 2020-07-07 杭州章跃实业有限公司 Ceramic cake reinforcement cage structure and manufacturing process

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KR100806820B1 (en) 2006-12-19 2008-02-22 삼성중공업 주식회사 Two-way hollow core slab and construction method thereof
JP6589290B2 (en) * 2015-02-19 2019-10-16 日本製鉄株式会社 Deck composite floor structure

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US3930348A (en) * 1970-01-14 1976-01-06 Johns-Manville Corporation Reinforced concrete construction
FR2081159A1 (en) * 1970-03-11 1971-12-03 Reimbert Andre
BE836061A (en) * 1975-11-28 1976-03-16 Le Clercq Pierre METAL FORMWORK FOR CONCRETE CONSTRUCTIONS
DK166462B1 (en) * 1990-10-01 1993-05-24 Joergen Breuning PLANT, DOUBLE-SCRAPED IRON CONCRETE COVER AND PROCEDURES FOR PRODUCING IT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102449248A (en) * 2009-05-15 2012-05-09 杜得胜 Steel reinforcement structure of bubbledeck slab elements and procedure of manufacturing bubbledeck slab elements
CN102449248B (en) * 2009-05-15 2014-01-01 杜得胜 Steel reinforcement structure of bubbledeck slab elements and procedure of manufacturing bubbledeck slab elements
CN111379378A (en) * 2020-01-07 2020-07-07 杭州章跃实业有限公司 Ceramic cake reinforcement cage structure and manufacturing process

Also Published As

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PL173565B1 (en) 1998-03-31
PL311954A1 (en) 1996-03-18
WO1994029541A1 (en) 1994-12-22
DK68093A (en) 1994-12-11
DK68093D0 (en) 1993-06-10
ZA944087B (en) 1995-02-06
AU6969494A (en) 1995-01-03

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