US3767153A - Platform structure - Google Patents

Platform structure Download PDF

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US3767153A
US3767153A US00075851A US3767153DA US3767153A US 3767153 A US3767153 A US 3767153A US 00075851 A US00075851 A US 00075851A US 3767153D A US3767153D A US 3767153DA US 3767153 A US3767153 A US 3767153A
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mold
concrete
cavity
walls
pair
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H Haller
E Wendl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
    • B28B7/42—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for heating or cooling, e.g. steam jackets, by means of treating agents acting directly on the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/166—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes for oblong articles, e.g. hollow masts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • 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
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/06—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement with beams placed against one another optionally with pointing-mortar

Definitions

  • a roof platform or deck structure consists of a plurality of elongated prefabricated reinforced-concrete ele- [52] U.S. Cl.
  • Our present invention relates to concrete roof, platform or deck structures, to an improved method of making such structures and, more particularly, to molds for producing the elements constituting such structures.
  • a more particular object of the invention is to provide an improved mold for the production of the structural elements of a concrete roof, platform or deck.
  • a roof, platform or deck structure spanning a pair of spaced-apart supports and composed of laterally contiguously elongated concrete structural elements of substantially identical configuration which are entirely self-supporting and unitarily span the supports, the elements being laterally connected to produce a roof, platform structure or deck having substantially the characteristics and strength of a monolithic concrete slab or shell, or stress and strength characteristics exceeding those of a precast or reinforced concrete shell.
  • Our invention is based upon the discovery that the individual elements of the structure, which are entirely self-supporting between-the horizontally spaced support members, can be coupled together in a laterally contiguous relationship, so as to define a substantially continuous roof, platform or deck surface without the application of wet concrete or the pouring, casting or other application of concrete in situ.
  • each of the individual elements of such a structure has an inverted'U cross-section with a web lying along the bight of the U and a pair of flanges corresponding to the legs thereof.
  • Our invention is also width of the laterally projecting marginal portion of the web.
  • the wall thickness of the flanges is 4-5 cm.
  • the flanges converge or diminish in thickness downwardly, i.e., when the channel defined by the element is approximately of trapezoidal cross-section with the narrow base of the trapezoid at the web and the broad base of the trapezoid between the free ends of the flanges.
  • the convergence of the flanks of the flanges provides no structural disadvantage and indeed reduces the weight of the elements without materially limiting their load-carrying capacity and furthermore provides a draft facilitating the withdrawal of the cast concrete elements from the mold.
  • a mold for the formation of the structural elements which comprises an upwardly open outer shell and an inner shell conforming substantially to theme cess or cavity of the structural element which is removably received in the outer shell and defines therewith a channel-like mold cavity of invertedll org corjiguratiofiT
  • the concrete is cast in this cavity, preferably after the introduction of the reinforcing members into the latter, and is compacted and vibrated (jarred or jolted) by vibrating members affixed to the outer shell.
  • the non-self-supporting and only partially hardened concrete body is lifted from the outer shell of the mold upon the removable inner shell and permitted to set upon the latter while a fresh inner shell is introduced into the mold for the casting of a further structural element thereon.
  • the inner shell can be removed.
  • the inner form of the double-form mold has several functions. Firstly, it constitutes the inner wall defining the web and flanges of the structural element. Secondly, it constitutes a support and transport frame or bed for the cast but unhardened concrete. Thirdly, it may constitute a means for facilitating the hardening of the concrete. Furthermore, since only the outer shell need be provided with vibrators, the production of the concrete bodies can proceed with limited capital expenditure and no obstruction of the casting and jolting operation during the hardening of the concrete bodies.
  • the system of the present invention has the further advantage that the moist concrete bodies, prior to complete setting, may be subjected to further treatment outside the mold at locations which would be inaccessible on bodies within the mold. Such operations may include the formation of openings within the body to permit the introduction of transverse supports or fastening means.
  • the ends of the mold cavity defined by a pair of end plates fixed to the inner shell may be provided with means, e.g., wire loops, cutouts or the like, engageable by the hooks of a crane.
  • means e.g., wire loops, cutouts or the like, engageable by the hooks of a crane.
  • Such means may include insert strips raising the floor of the mold and thereby foreshortening the depths of the mold cavity, such strips preferably being adjustably mounted upon the inner shell.
  • a single mold for the production of elongated structural elements of different length in accordance with the above principles, in which case we subdivide the mold longitudinally with templates having the configuration of the desired cross-section of the structural element and forming the ends of individual mold compartments.
  • Such templates fit within the mold cavity and advantageously serve as patterns for the adjustable walls of the cavity to enable the latter to be readily positioned for a particular cross-section of the structural elements.
  • the templates may be provided with fastening means for mounting them at any desired locaction along the mold walls, advantageously upon the outer form.
  • the templates can impart the desired terminal angle to the structural elements and may be provided with a mold surface of corresponding configuration.
  • the hardening of the concrete upon the inner form is accelerated by conducting a heating medium through the latter.
  • this heating is accomplished after the removal of the inner form from the mold and a number of such inner forms can be positioned at the setting station to conduct the heating medium, e.g., steam or hot air, therethrough.
  • the inner form can be made from sheet metal, this material having been found to be particularly satisfactory when heating of the concrete body from within is desired. Since a number of such inner forms is required, however, and it may be desired to make inner forms associated with each flange height, we may cast the inner forms from concrete and especially lightweight concrete having aggregates of expanded mineral. It has been found to be advantageous, in all cases in which a concrete inner from is used, to provide it with a highly smooth surface of, for example, a synthetic resin. In the preferred case, however, an adjustable inner form is employed and, when a cast inner form is used, it is provided in its interior with conduits for the heating medium. When a qr-shaped body is to be produced, moreover, it has been found to be advantageous to employ a number of removable inner forms.
  • the inner forms can include a pair of outer members having a cross-section corresponding approximately to half that of the central member.
  • the several inner forms may be connected together by plates, e.g., a bottom plate spanning the floor of the outer form and/or endplates closing the extremities of the mold cavity.
  • the connecting plates may be provided with means enabling the crane to grip the forms and the concrete body carried thereby.
  • the spacer templates must have legs conforming to the rr-shape and extending between the inner forms.
  • FIG. 1 is a perspective view of a roof, platform or deck structure, made in accordance with the present invention, as seen from above;
  • FIG. 2 is a perspective view of the structure as seen from below;
  • FIG. 3 is a side-elevational view of a mold for the production of the structural elements used in the roof, platform or deck structure of FIGS. 1 and 2;
  • FIG. 4 is a plan view of the mold of FIG. 3;
  • FIG. 5 is a detail end view, partly in diagrammatic form, of a mold for producing structural elements having an inverted-U cross-section according to the invention
  • FIG. 6 is an elevational view of a template for use in the mold of FIG. 5;
  • FIG. 7 is an elevational view of a strike board for use with the mold of FIG. 5 or the mold of FIGS. 8 or 9;
  • FIG. 8 is a vertical section through another mold according to the invention.
  • FIG. 9 is an end view of a mold for producing still another structural element according to the invention.
  • FIG. 10 is a view of the template of FIG. 6 in side elevation.
  • FIGS. 1 and 2 of the drawing we have shown a basic roof, platform or deck structure spanning a pair of supports 27 and 26 that are horizontally spaced apart.
  • the support 26 is shown to be a grate or the like forming a wall into which the far ends of the structural elements constituting the roof, platform or deck extend to be embedded or cemented with mortar or concrete.
  • the support 27 merely forms a masonry pillar upon which the roof structure rests. It should be understood that the invention is applicable to any type of support structure so that either support may be secured by cement, bolts, flanges or the like to the structural elements, or may be of the kind upon which the roof, platform or deck rests via a ledge, shoulder or other horizontally disposed surface.
  • the roof, platform or deck structure comprises a plurality of laterally contiguous substantially identical structural elements of channel configuration, the elements being represented generally at 20.
  • the elements are of inverted-U cross-section; while structurally different elements have been shown in these Figures, it will be understood that the roof, platform or deck structure will generally consist of elements of only one kind.
  • Each of the elements comprises a horizontal web 21, forming the bight of an inverted-U, and, monolithic, integral and in one piece therewith, a pair of longitudinally extending flanges 22 lying in vertical planes.
  • Each of the structural elements 20 has a length L sufficient to span the distance D between the supports 26 and 27 and a width w which is a minor fraction of the length L. In general, the length may be ten times the width or more.
  • the width w corresponds to the bight of the channel; the web has a thickness t, of 3 to 10cm while the flanges 20 have a thickness 1 of approximately 4 or 5cm.
  • the structural element 20a (FIG. 2) is shown to have a reinforcement 20a in the form of a mat, grid or mesh bent into channel configuration and extending both along the web 21 of the structural element and within the flanges 22 thereof.
  • the element b is seen to be formed with a reinforcement as constituted by arrays of reinforcement bars which may be transversely interconnected by stirrups (now shown) in accordance with conventional techniques.
  • Tie rods traverse the flanges 22 of the structural elements in the transverse direction and are tightened at the lateral ends of the roof structure via, for example, nuts 31 (FIG. 1) to hold the longitudinal edges 20c of the contiguous structural elements 20, 20a, 20b etc. together to form an uninterrupted roof surface.
  • each pair of adjoining members can be coupled together by bolts 32 traversing the respective flanges 22. It has also been found to be advantageous to laterally interconnect the elements by members extending through the webs 21 as represented diagrammatically at 33, access to the bolts being afforded by openings 23 provided in these webs. Additional openings 24 can be formed in the flanges 22 to accommo date the tie rods 30, and transversely extending ribs 25 of a profile resembling that of the flanges 22 may bridge the flanges at longitudinally spaced locations (FIG. 2).
  • insulating plates 34 may be affixed.
  • the attachment'of the insulating members 34 may be accomplished as well by affixing synthetic resin or wood strips 36 to the lower edges of the flanges by positioning these strips in the mold and providing them with projections 37 which are embedded in the concrete.
  • the openings 23 and 24 may, in part, be formed by inserts 38 of wood or foamed synthetic resin (e.g., cellular polystyrene) which can be extracted from the molded member prior to erection of the roof.
  • foamed synthetic resin e.g., cellular polystyrene
  • FIGS. 1 and 2 whether produced by lateral tensioning of a support carrying the loosely disposed but contiguous members 20 or by tying the members together in pairs or in groups as previously described, yields a stiff plate which is self-supporting. No application of web concrete in situ is required and the plate has the structural characteristics of a monolithic slab.
  • the tie rods 30 may be encased in concrete concurrently with the formation of webs similar to that shown at 25 and openings 23 and 24 may be closed by surrounding the indicated portions with falsework and pouring concrete through the openings 23, the concrete lying flush with the upper surface of the deck.
  • FIG. 5 we show an outline (broken lines) of the actual cross-section of the inverted U or channelshaped members produced in accordance with the present invention and diagrammatically illustrated at 20 in FIGS. 1 and 2. From this Figure it will be apparent that the inner flanks of the flanges 22 preferably diverge downwardly with a slight draft so that the space within the channel has the configuration of a trapezoid, the broad base of which is defined by a line connecting the free ends of the flanges 22 while the narrow base lies along the web 21. As shown in FIG. 9 in broken lines, the outer flanks of the flanges may converge toward the inner flanks so that the flanges taper downwardly in cross-section and are of reduced thickness remote from the web 21.
  • FIGS. 3 5 and 9 we have shown molds for producing structural elements in accordance with the present invention.
  • These molds comprise a pair of outer walls 2a and 2b which define the flanks of the concrete element and form a chamber 40 between them into which the concrete may be cast.
  • the walls 20 and 2b extend continuously over the entire length of the form, which equals the maximum length of a concrete element to be produced by the system.
  • the walls 2a and 2b are affixed by bolts 41 to spaced-apart brackets 42 consisting of upright arms 42a, carrying the walls 20 and 2b, and horizontal arms 42b provided with slots 42c running transversely to the major dimension of the form. Reinforcing ribs 42d interconnect the arms to stiffen the brackets.
  • the brackets 42 are mounted upon spaced'apart I-beams 1 anchored at In to a foundation, e.g., a concrete footing and provided with centering screws 7 for proper alignment of the lbeams and, therefore, of the formwork.
  • Bolts 14 pass through the slots 42c and into the upper flange of the I-beam 1 to adjustably anchor the brackets 42 thereto. By loosening the nuts of these bolts, it is possible to move the brackets 42 inwardly or outwardly and thereby change the width w of the concrete element to be formed in the mold.
  • each wall 20, 2b extends continuously above the brackets 42 and thereby serves as a guide for a strike bar, e.g., as shown at 15 in FIG. 7.
  • the strike bar will merely be a board whose underside rests upon the guide edges 20 to strike the concrete flush with these edges.
  • the inner mold may be spanned by a pair of bars 9 in the longitudinal direction, the bars 9 extending beyond the ends of the mold cavity at 9a and 9b as shown in FIG. 4 to enable the hooks of the crane to engage the inner form and lift it, together with the concrete body cast therearound, from the outer form 2.
  • a sheet-metal horizontal member 3a forms the roof of the inner form 3 and has, preferably, a symmetrically downward camber from a central crest as best seen in FIG. 5.
  • the inner flanks of the flanges 22 are formed by a pair of sheet-metal plates 3b and 30 whose lower edges are turned outwardly at 3d and 3e to rest approximately against the inner surfaces of the walls 20 and 2b of the mold. Hence a full-height flange may be cast within the space defined between the inner and outer shells 2 and 3, respectively.
  • the vertical height of the flanges 22 can, in accordance with the structural requirements, be adjusted by the use of vertically shiftable strips 4 which are shown to be of angle profile and comprise a horizontal leg 4a and a vertical leg 4b, the latter being adjustably fixed to the walls 3! and 3c by screws 4c. Hence it is possible to lift the leg 4a from its solid-line position there illustrated and shorten the height of the flange 22 to be formed.
  • strips 28, with anchoring pins, studs or projections 28a extending upwardly, can be placed upon the members 4 to be locked into the concrete body in the manner of the strips 36 illustrated in FIG. 2.
  • Strips 28 can be composed of a material to which underlying plates may be connected with screws or the like. It is also possible to mount studs, nuts, screws or like fastening means upon the members 4 for embedding in the concrete or to use wire loops for this purpose.
  • the mold is provided with plates of cellular polystyrene, wood or other material readily removable from the concrete body after hardening thereof.
  • an important aspect of the present invention resides in the removal of the partially hardened and incompletely set concrete from the outer shell 1 of the mold together with the inner shell or form 3. We prefer, if this procedure is followed, to cut the openings 23 and 24 in the soft concrete.
  • templates 5 (FIGS. 5, 6 and 10) are provided at spaced locations along the mold, these templates having the configuration of the desired concrete element and, therefore, the configuration of the mold cavity. Between each pair of elements 5, a respective structuralelement 20 is produced. Of course, when each of the structural elements is to extend over no more than half the length of the mold, two or more concrete bodies may be produced within the mold.
  • the spacer templates 5, which define the extremities of the individual structural elements manufactured in a particular mold and also may serve as a gauge for proper setting of the inner form 3, can comprise a bar 5a having a pair of legs 5b and 5c and thereby corresponding to an inverted U.
  • the bars and legs may be provided with openings 13 traversable by reinforcing rods extending through the mold cavity so that the templates simultaneously serve as supports and spacers for these reinforcing rods.
  • the template 5 has C-clamp 11 with an arm 11a overhanging the leg 5c and defining a throat 11b into which the wall 2b of the outer form can extend.
  • the template 5 can be tightened in place by a pair of thumb screws 12 traversing the arm 11a.
  • the template To prevent canting of the template within the mold cavity, we provide the template with a bracket 6 having legs 6a and 6b which rest upon the edge 20 previously described. Since the template 5 also determines the angle of the end face of each structural element and it may be desired to have this end face include an angle with the platform surface which is other than 90, we provide the template 5 with a surface 5e inclined at the desired angle D to the horizontal (see FIG. 10). To adjust the leg of the individual structural elements, therefore, it is merely necessary to loosen the screws 12 and shift the template 5 to the desired position along the trough formed by the outer shell 2 of the mold.
  • the various movable parts of the inner form amy then be adjusted to rest against the inner periphery 5d of the templates, thereby accuratly establishing the dimensions and configuration of the cast body.
  • Reinforcing members can then be inserted through the openings 13 and concrete cast between each pair of templates.
  • the strike board is drawn across the edges 2c of the lateral walls of the mold to smooth the upper surface of the cast body which is permitted to harden until its slump is negligible.
  • the inner form Prior to the establishment of a self-supporting state of the concrete and after decline of its slump to zero, the inner form is lifted out of the outer form together with the nonsupporting cast concrete bodies and carried to a hardening station at which a hot fluid, e.g., steam or hot air, is conducted through the interiors of the inner form and, if desired, through the pipes 9. Since a number of such inner forms and hardening bodies will generally be provided at this station because of repeated use of the outer form for the casting of further bodies, the inner forms may be connected in series or parallel to conduct the heated fluid through them.
  • a hot fluid e.g., steam or hot air
  • the inner form When each of the bodies has hardened, set or cured sufficiently to be self-supporting, the inner form may be turned over to permit the concrete body to rest on its platform-forming surface and the inner form to be lifted therefrom by the crane.
  • openings Prior to setting or hardening of the body, openings may be cut into the soft concrete as noted earlier, and after hardening and opening-forming inserts may be knocked out as desired. Upon erection of the laterally contiguous bodies into a platform, these openings can be closed. Unused openings 13 in the template 5 may be closed by plugs.
  • FIG. 9 we have shown somewhat diagrammatically a mold for the formation of concrete bodies wherein a pair of lateral walls 102a and l02b on supports 10] define the outer form.
  • the inner forms 1030, 103b and 103C are here shown to be located behind an end plate 10 and to be constituted of sheet metal as shown in FIG. 5 or of concrete as previously described.
  • Conduits 9 may traverse the inner forms to secure them to the end plates 10, the end plate having a wire loop 10a enabling the inner forms and the concrete body carried thereby to be lifted from the mold.
  • the conduits 9 may serve merely to attach the inner forms to the end plates 10 or also as conduits for the introduction of steam or other heating medium into these forms.
  • the assembly illustrated in FIG. 9 is used to produce a I l-shaped body as represented in broken lines, the flanks of its flanges 122 converging downwardly while the spaces defined between these flanks and the respective web 121 form trapezoids with the broad base atthe bottom...
  • the templates When the mold illustrated in FIG. 9 is used, the templates must have a corresponding tr-shaped configuration. It is also possible to insert the templates into the reinforcement basket when the latter is constructed outside the mold for insertion together with the reinforcements into the latter.
  • FIG. 7 we have shown a strike board 15 having shoulders 15a adapted to ride upon the edges 2c of the mold and a central tongue 15b extending within the mold cavity for establishing the thickness of the web of the concrete body.
  • the exterior of the mold is provided with vibrators 8 for compacting and jolting the concrete.
  • the latter may be oiled as is conventional with concrete formwork or provided with a synthetic-resin coating having low adhesion to the concrete.
  • FIG. 8 we show a negative form 16 for the of the sheet-metal inner form illustrated in FIGS. and v 9.
  • Conduit means may be provided within these concrete inner forms as shown at 16a to conduct a heating medium through the body to promote curing of the concrete.
  • inner forms of different height as when the flanges of the structural elements are to have different heights, one need only employ a negative form of a depth corresponding to the height of the largest inner form to be made and cast the inner forms to the required depth of concrete.
  • the negative form as will be apparent, is of trapezoidal configuration.
  • At least one inner form removably received between said walls and defining a mold cavity therewith having a pair of downwardly extending compartments adapted to form said flanges upon the casting of concrete in said cavity, said inner form being removable from said outer form together with a concrete body cast thereon;
  • a trough-shaped outer form having a pair of transversely spaced longitudinally extending vertical walls running at least the length of one of said elemcnts;
  • At least one inner form removably received between said walls and defining a mold cavity therewith having a pair of downwardly extending compartments adapted to form said flanges upon the casting of concrete in said cavity, said inner form being removable from said outer form together with a concrete body cast thereon;
  • At least one spacer template disposed in said cavity and having a configuration substantially identical to the cross-section of said element and adjustably mounted on one of said walls for defining the length of an'element cast in said cavity.

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922135A (en) * 1970-09-28 1975-11-25 Hans Haller Mold for concrete C-profiles including a removeable core
US3999913A (en) * 1974-11-27 1976-12-28 Abraham Branitzky Concrete shaping and stressing means
US4673159A (en) * 1984-10-18 1987-06-16 Hancock Concrete Products Co., Inc. Molding forms for making precast portal assembly sections for culverts
WO1997020666A1 (fr) * 1995-12-01 1997-06-12 Vicente Solana Gomez Moule pour panneaux prefabriques en beton
ES2117499A2 (es) * 1994-05-27 1998-08-01 Gomez Vicente Solana Paneles prefabricados paara forjados de vigas planas y dispositivo para su fabricacion.
US5845875A (en) * 1994-05-02 1998-12-08 Lockheed Martin Corporation Modular launch pad system
ES2155813A1 (es) * 1999-11-11 2001-05-16 Perez Francisco Bengoa Dispositivo de union de placas de hormigon.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102277962B (zh) * 2011-04-30 2013-04-10 张先汉 利用铸钢放样平台浇铸砼放样平台的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729001A (en) * 1926-01-20 1929-09-24 Lancrenon Marcel Marie Eugene Ferrq-concrete flooring member
US3030688A (en) * 1959-03-30 1962-04-24 Fmc Corp Molding apparatus
US3132403A (en) * 1961-06-22 1964-05-12 Fmc Corp Concrete beam molding apparatus
US3303545A (en) * 1965-03-25 1967-02-14 R & H Molding Inc Molding machine with movable end means for closing mold and stripping article

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH36370A (de) * 1906-08-10 1907-03-15 Patent Boerse Form zur Anfertigung von U-förmigen, eisenarmierten Betonbalken
US1993930A (en) * 1933-01-06 1935-03-12 Trussed Concrete Steel Co Mold for building constructional elements of concrete
AT242926B (de) * 1963-11-12 1965-10-11 Builpat Ag Vorrichtung zur Herstellung von insbesondere doppeltgekrümmten Dachschalen u. dgl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1729001A (en) * 1926-01-20 1929-09-24 Lancrenon Marcel Marie Eugene Ferrq-concrete flooring member
US3030688A (en) * 1959-03-30 1962-04-24 Fmc Corp Molding apparatus
US3132403A (en) * 1961-06-22 1964-05-12 Fmc Corp Concrete beam molding apparatus
US3303545A (en) * 1965-03-25 1967-02-14 R & H Molding Inc Molding machine with movable end means for closing mold and stripping article

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922135A (en) * 1970-09-28 1975-11-25 Hans Haller Mold for concrete C-profiles including a removeable core
US3999913A (en) * 1974-11-27 1976-12-28 Abraham Branitzky Concrete shaping and stressing means
US4673159A (en) * 1984-10-18 1987-06-16 Hancock Concrete Products Co., Inc. Molding forms for making precast portal assembly sections for culverts
US5845875A (en) * 1994-05-02 1998-12-08 Lockheed Martin Corporation Modular launch pad system
US5974939A (en) * 1994-05-02 1999-11-02 Lockhead Martin Corporation Modular launch pad system
ES2117499A2 (es) * 1994-05-27 1998-08-01 Gomez Vicente Solana Paneles prefabricados paara forjados de vigas planas y dispositivo para su fabricacion.
ES2145659A2 (es) * 1994-05-27 2000-07-01 Solana Gomez Vicente Mejoras en la patente n. 9401173 sobre paneles prefabricados para forjados de vigas planas y dispositivo para su fabricacion.
WO1997020666A1 (fr) * 1995-12-01 1997-06-12 Vicente Solana Gomez Moule pour panneaux prefabriques en beton
ES2155813A1 (es) * 1999-11-11 2001-05-16 Perez Francisco Bengoa Dispositivo de union de placas de hormigon.

Also Published As

Publication number Publication date
DE2046621B2 (de) 1981-01-08
DE2046621A1 (de) 1971-04-08
BE756509A (fr) 1971-03-01
DE2046621C3 (de) 1981-10-22

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