EP2636808A1 - Plancher composite pour bâtiments de tôle ondulée et de béton - Google Patents

Plancher composite pour bâtiments de tôle ondulée et de béton Download PDF

Info

Publication number
EP2636808A1
EP2636808A1 EP13158200.9A EP13158200A EP2636808A1 EP 2636808 A1 EP2636808 A1 EP 2636808A1 EP 13158200 A EP13158200 A EP 13158200A EP 2636808 A1 EP2636808 A1 EP 2636808A1
Authority
EP
European Patent Office
Prior art keywords
metal sheet
corrugated metal
concrete
wire mesh
stirrups
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13158200.9A
Other languages
German (de)
English (en)
Inventor
Giuseppe Grande
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from IT000013A external-priority patent/ITCS20120013A1/it
Priority claimed from IT000037A external-priority patent/ITCS20120037A1/it
Application filed by Individual filed Critical Individual
Publication of EP2636808A1 publication Critical patent/EP2636808A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the present patent concerns a new type of mixed composite floor element, made of steel and light or ultralight concrete, realized with components which do have large scale diffusion in the market but at the same time connected and associated to each other so that the outcome is a final product significantly innovative and representing a breakthrough in terms of innovation, resistance and lightness.
  • the invention has as main peculiarity an original system which ensures the distance, the support as well as the blockage of the electrowelded wire mesh (used in the construction of mixed composite floor elements steel/concrete) such system, which is thoroughly described in this patent, allows for the first time to fully benefit from the structural resources of the electrowelded wire mesh in the compressed area of the slab made of light or ultralight concrete, where the composite floor element is particularly exposed to positive bending moment.
  • the stirrups (2) of Fig. 11 have a length (Ls) which is inferior to the pitch of the corrugated metal sheet (plg) (and an hypothetic U fork and/or an eventual bar of round, square or other profile) which make possible the link amongst the following components:
  • the A) solution offered by this patent does not include any modification concerning the production of the corrugated metal sheet (1), seen that the simple production and the installation of U or L or C or ⁇ cold formed profiles above the corrugated metal sheets - before the assembling of the electrowelded wire mesh, would suffice.
  • the B) solution instead refers to an automated cutting out of the slots, necessary to receive connectors and spears of the snap stirrup (2), during the cold formed profiling of the corrugated metal sheets (1), with a station of coils fly punching, before entering in the profiling device.
  • Such system is particularly suitable for the construction of new buildings and the refurbishment of old buildings because it permits to leave unchanged the old wooden beams, getting rid of the heavy "filling" layers between the floor and the planking.
  • Such lightness makes this composite floor element, the one to be preferred when it comes to reconstruction after earthquakes because it drastically reduces the exposure to seismic risks.
  • corrugated metal sheets were produced for composite floor elements, of height between 55 mm and 200 mm, on which the casting of traditional concrete of 2400 Kg/mc is executed.
  • the thickness of such casting is generally included between 40mm and 100mm outside the corrugation: this means between the upper thread of the corrugated metal sheet and the upper thread of the final concrete casting.
  • WO-A-8900223 describes a floor composite element intended for buildings and made of corrugated metal sheet and concrete, comprehensive of an electrowelded wire mesh placed above the corrugated metal sheet, in which we can find - perpendicularly to the corrugations several connectors for the shear. These connectors are placed where the shear is maximum, only on the steel beam and not throughout the whole surface of the composite floor, with the only aim to create a beneficial situation for the beam, not for composite floor in corrugated metal sheet.
  • the process of welding with thousands of stitches, can locally alter the protection given to the corrugated metal sheet by the zinc coating.
  • panels of the electrowelded wire mesh are free to move during the casting, consequently they need to be tied up with iron wire, to guarantee the lengths of overlapping amongst the various sheets.
  • a wire mesh of this kind does not help toward the shrinkage of the concrete, does not place itself in the area of the stretched fibres (where the corrugated sheet leans over the beams and is characterized by a negative bending moment) and is not even efficient to give shape (together with the corrugated metal sheet) to the rigid plan which is crucial for antiseismic structures as well as being required by law in accordance with the new technical rules, but more importantly does not contribute structurally toward the compressed area where the composite floor works with positive bending moment.
  • the structural engineer must therefore pay particular attention to the entity of the structural bearing loads (G1 according to EC3) and to the entity of the non structural supported loads (G2 according to EC3): in fact while the variable load or load capacity Q is only statistically present, the permanent loads (G1 and G2) are always present.
  • loads G1 and G2 influence the cost of the structure of the building and most of all of the foundations works.
  • the concretes which can be used to build composite floors, according to their weight can be classified as follows: - Ordinary concrete: specific weight 2.300-2500 Kg/m 3 , - Light concrete: specific weight 1.400-1600 Kg/m 3 , - Ultra light concrete: specific weight 200-800 Kg/m 3 .
  • the expanded polystyrene foam and polystyrene can also be of recycled type, obtained from packaging or agglomerated of chipboard and grains of various entity.
  • the main scope of the sand is to allow an optimal intervention on the concrete by the vibrators which, with extremely short interventions all over the place of circa 1 or 2 seconds each, make the concrete pour quickly into the channels of the corrugated metal sheet.
  • silica dioxide becomes extremely reactive at room temperature combining itself easily with secondary calcium hydroxide, residual product from the main reaction, although incomplete, creating further fibres or microscopic needles of silicate calcium hydrate.
  • Such secondary reaction in terms of quantities and time also called pozzolanic reaction, provides the creation of a much thicker structure of needles which weaving amongst themselves create the resistances which are traditionally measured on the cubes with free trials of crushing.
  • the dimensions of the silica fume being just of few nanometres, make sure that it can insert itself within the structure of the silicate calcium hydrate, which presents some empty spaces of several nanometres, making the whole structure thicker, more resistant and impenetrable.
  • the stirrups (2) in Fig.7 have a length (Ls) which does not goes beyond the length of the pitch of corrugated metal sheet (plg).
  • stirrup "serves" solely a unique sheet of corrugated metal sheet and there is no need for alignment with the stirrups belonging to the adjacent sheets.
  • the stirrups can also have a length (Ls) which is a submultiple of the pitch of the corrugated metal sheets, but not less than a minimum number represented by the number of corrugations contained in the pitch (plg) as displayed in the third metal sheet on the right of Fig.7, Fig. 8 Sec. A-A a.c. (before casting) and Fig. 9 Sec. A-A p.c. (after casting).
  • Ls length which is a submultiple of the pitch of the corrugated metal sheets, but not less than a minimum number represented by the number of corrugations contained in the pitch (plg) as displayed in the third metal sheet on the right of Fig.7, Fig. 8 Sec. A-A a.c. (before casting) and Fig. 9 Sec. A-A p.c. (after casting).
  • stirrup is equipped with a certain number of rotating connectors and another number of snap spears (four are displayed here, but their number can vary depending on the structural calculation).
  • the stirrup is assembled in the following way:
  • the pitch (ic) of the slots is particularly studied to allow first the insertion and then the snap blockage.
  • the flaps of the connector (a) and of the spears (c+d) in Fig. 11 avoid that, once inserted, may be removed ensuring the structural mechanism against the sliding and the detachment of the flap.
  • the corrugated metal sheet is cavity incised and cut (refer to the four groups, each with 8 incisions, see Fig. 12 ) but no material of the corrugated metal sheet is taken away.
  • the slot (6) and/or the incisions (7) are getting filled up with fine past of cement which blocks and "welds" any possible gap between stirrup and corrugated metal sheet.
  • a frontal view of the bars (5b) is also attached, see Fig.7 , as well as a transversal view in Fig. 11 , with round profile and length (Lb) and diameter ( ⁇ b): again the example is a simplification and not exhaustive.
  • the spear (c+d) can be realised also through simple embossing of the corrugated metal sheet of thickness (t) of the stirrup (2) without any flap in the corrugated metal sheet.
  • bar can also be produced through die-cast alloys.
  • the B) solution represents a radical innovation, for the highly industrialized production as well as well as for the reduction of any further successive working process and the building site's costs.
  • the round bars of the electrowelded wire mesh (3) are very well wrapped and covered by the concrete (4) without areas of missing adherence, which is normally the case for mesh which leans directly against the corrugated metal sheet (1).
  • the electrowelded wire mesh (3) has, as well in case of this patent, the usual function of avoiding a shrinkage of the concrete, avoiding superficial damages of the concrete and also avoiding the separation of the concrete from the corrugated metal sheet (1) Fig. 5a , of Fig. 5b and of Fig.9 .
  • the pitch between the profiles (2a, 2b) of Fig. 2 or the snap stirrups (2) of Fig. 11 must be calculated by the structural designer in order to avoid the elastic lowering of the electrowelded wire mesh, so that after the transit of the team of workers the net can be back exactly to a flat position and as such ready to receive again compressions as a consequence of the composite section made of corrugated metal sheet and ultralight concrete.
  • the electrowelded wire mesh does not incur in particular deformations which normally takes place during the assembling of panels of electrowelded wire mesh or at a later stage during the casting of the concrete, this means that the rounds of the mesh remain perfectly aligned and able to resist to the compression.
  • the described system can use the modest but not insignificant compression's resistance of the ultralight concretes exactly for the peculiarities disclosed by this patent: the general deflexion of the entire composite floor generates compressions in the concrete ( median strip area) which are collected also through the electrowelded wire mesh (3) and transferred to the profiles (2a, 2b) of Fig. 2 or to the snap stirrups (2) of Fig. 11 , to counteract the traction which originates in the corrugated metal sheet (1).
  • the creep of the ultralight concretes is absolutely the lowest amongst all the composite floors which can be made with concrete, because the ratio water/cement is about 0,28-0,30.
  • ultralight concretes can be considered much more stable in the long run in comparison with the composite floors made of corrugated metal sheet and ordinary concrete (where the ratio water/cement is 0,6-0,7) and do not give any sign of the same deferred lowering.
  • ultralight concretes are suitable for the creation of composite sections steel-concrete provided that the following conditions are met:
  • the process of vibration, levelling and grinding of the ultralight concrete is particularly productive and fast, for the qualities of lightness and spread ability of the ultra light concrete, which permits to reduce the efforts of the workers , the levelling times and professional diseases (white finger) directly linked to the vibrations of the concretes in the building site.
  • the invention permits numerous advantages, and to overcome difficulties that could not otherwise have been overcome with the systems on sale at present.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
EP13158200.9A 2012-03-08 2013-03-07 Plancher composite pour bâtiments de tôle ondulée et de béton Withdrawn EP2636808A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000013A ITCS20120013A1 (it) 2012-03-08 2012-03-08 Solaio misto in lamiera grecata e calcestruzzo per edifici
IT000037A ITCS20120037A1 (it) 2012-11-06 2012-11-06 Solaio misto in lamiera grecata e calcestruzzo per edifici

Publications (1)

Publication Number Publication Date
EP2636808A1 true EP2636808A1 (fr) 2013-09-11

Family

ID=47779990

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13158200.9A Withdrawn EP2636808A1 (fr) 2012-03-08 2013-03-07 Plancher composite pour bâtiments de tôle ondulée et de béton

Country Status (1)

Country Link
EP (1) EP2636808A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106869506A (zh) * 2017-03-24 2017-06-20 贵州建工集团有限公司 一种解决大跨度组合楼板双层双向钢筋安装的施工方法
IT201600094980A1 (it) * 2016-09-21 2018-03-21 Giuseppe Grande Impalcato di piano costituito da travi composte o ibride di vario genere e solai ortotropi composti o ibridi, in lamiera grecata e calcestruzzo o in assito di legno e calcestruzzo o in lastre piane o nervate e calcestruzzo
RU2661954C1 (ru) * 2017-03-21 2018-07-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" КГАСУ Способ изготовления монолитного сталебетонного перекрытия
IT201700013987A1 (it) * 2017-02-09 2018-08-09 Giuseppe Grande Impalcato di travi e solai a tessitura anisotropa od ortotropa per stratificazione, composta od ibrida, di elementi strutturali di diversa costituzione

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US144501A (en) * 1873-11-11 Improvement in fire-proof partitions
US1073542A (en) * 1912-11-05 1913-09-16 Asbestos Protected Metal Co Building construction.
US1872984A (en) * 1928-03-21 1932-08-23 Mary Haines Marks Building construction
WO1989000223A1 (fr) 1987-07-02 1989-01-12 Safferson Limited Raccord en anti-cisaillement
DE3909157A1 (de) * 1989-03-21 1990-10-11 Kesting Lorenz Dacheindeckung mit metallprofilbohlen
EP2019174A2 (fr) * 2007-07-27 2009-01-28 De Agency S.r.l. Plancher modulaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US144501A (en) * 1873-11-11 Improvement in fire-proof partitions
US1073542A (en) * 1912-11-05 1913-09-16 Asbestos Protected Metal Co Building construction.
US1872984A (en) * 1928-03-21 1932-08-23 Mary Haines Marks Building construction
WO1989000223A1 (fr) 1987-07-02 1989-01-12 Safferson Limited Raccord en anti-cisaillement
DE3909157A1 (de) * 1989-03-21 1990-10-11 Kesting Lorenz Dacheindeckung mit metallprofilbohlen
EP2019174A2 (fr) * 2007-07-27 2009-01-28 De Agency S.r.l. Plancher modulaire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201600094980A1 (it) * 2016-09-21 2018-03-21 Giuseppe Grande Impalcato di piano costituito da travi composte o ibride di vario genere e solai ortotropi composti o ibridi, in lamiera grecata e calcestruzzo o in assito di legno e calcestruzzo o in lastre piane o nervate e calcestruzzo
IT201700013987A1 (it) * 2017-02-09 2018-08-09 Giuseppe Grande Impalcato di travi e solai a tessitura anisotropa od ortotropa per stratificazione, composta od ibrida, di elementi strutturali di diversa costituzione
RU2661954C1 (ru) * 2017-03-21 2018-07-23 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" КГАСУ Способ изготовления монолитного сталебетонного перекрытия
CN106869506A (zh) * 2017-03-24 2017-06-20 贵州建工集团有限公司 一种解决大跨度组合楼板双层双向钢筋安装的施工方法

Similar Documents

Publication Publication Date Title
CN201347598Y (zh) 建筑浇筑模板构件
US7143555B2 (en) Hybrid precast concrete and metal deck floor panel
EP2636808A1 (fr) Plancher composite pour bâtiments de tôle ondulée et de béton
US20090064619A1 (en) Building Construction With Lost Shuttering and Construction Method
KR101116073B1 (ko) 층고절감형 합성보
CN105332455A (zh) 一种透气式金属填充箱
CN106049732A (zh) 一种蜂窝孔压型钢板双向叠合楼板
US20070000197A1 (en) Structural decking system
CN102628304A (zh) 一种波纹腹板预应力混凝土叠合板及其制备方法
CN212129622U (zh) 一种混凝土叠合板结构
CN108951982A (zh) 基于水泥纤维板复合钢筋骨架的装配式混凝土叠合楼盖板及其施工方法
KR101011263B1 (ko) 슬래브와 기둥 접합부의 전단보강체 및 이를 이용한 전단보강구조
CN107938891B (zh) 叠合墙体结构及其制作方法
CN216475803U (zh) 一种应用于剪力墙体体系的新型预制楼板构造
KR101676841B1 (ko) 춤이 큰 데크 슬래브 설치를 위한 비대칭 변단면 철골보
KR20060022322A (ko) 합성바닥판 및 그 연결구조
CN205063134U (zh) 一种带阻浆片的组合式金属填充箱
KR102107666B1 (ko) 장스팬 합성보 및 이를 이용한 장스팬 구조 시공 방법
CN113152761A (zh) 一种装配式钢筋混凝土双向密肋叠合板楼盖及其施工方法
KR102129130B1 (ko) Z형 강선 래티스근 부착형 합성 데크플레이트 및 그 제조 방법
KR101038291B1 (ko) 슬림플로어형 철골보 및 이를 이용한 합성보
CN205907879U (zh) 一种增强双向传力性能的叠合板
WO2007056833A1 (fr) Dalle de beton coulee sur place
KR101126790B1 (ko) 중앙부 합성바닥판과 캔틸레버부 합성바닥판을 연결 설치하는 방법
CN218091607U (zh) 一种预应力预制梁及其组成的叠合梁

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140312