Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/14—Conveying or assembling building elements
  • E04G21/142—Means in or on the elements for connecting same to handling apparatus
• • 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
  • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
  • B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
  • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
  • E01F8/0023—Details, e.g. foundations
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/38—Connections for building structures in general
  • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
  • E04B1/4114—Elements with sockets
  • E04B1/415—Elements with sockets with captive and extendable anchoring parts, e.g. spring-loaded bolts, hanging rings
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
  • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
  • E04G21/12—Mounting of reinforcing inserts; Prestressing
  • E04G21/125—Reinforcement continuity box
  • E04G21/126—Reinforcement continuity box for cable loops
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T403/00—Joints and connections
  • Y10T403/54—Flexible member is joint component

Definitions

• the invention relates to a device for connecting prefabricated concrete parts, consisting of at least one rope loop, which is anchored at one end in the prefabricated concrete part and the other, loop-like end cooperates with a holding part inserted into the end face of the prefabricated concrete part, around the rope loop during the manufacture of the prefabricated concrete part about to bend elastically at right angles and release it for the bond.
• a device of the type specified above is known for example from DE-OS 16 84 254.
• the rope loop or the like is bent by a holding part such that one part of the rope loop is anchored in the precast concrete part.
• the other part is fixed in the holding part and can be erected to produce the position of use.
• the rope loop is fixed in the holding part by a nose-shaped attachment in the central plane of the holding part. Similar devices are described in EP 0 534 475-A1 and in DE 4 131 956-Al.
• EP-OS 0 534 475 Another device for the purpose in question is described in EP-OS 0 534 475.
• a holding block is arranged in the insert, which fixes the rope loop elastically deforming and at least essentially clamping at right angles without mechanical stress on the insert.
• the invention is based on the object of further developing a device of the type described at the outset in such a way that it can be produced simply and cheaply, with no malfunctions occurring during processing and the rope loop being able to be brought into the connecting position using simple means.
• the invention is based on the Direction of the type specified and suggests that the holding part is designed as an elongated, substantially uniform in cross section, U-shaped box, the substantially flat box bottom, which extends parallel to the end face of the precast element, has an opening for the rope loop , with means in the area of the opening, which hold the rope loop part to be anchored essentially at right angles to the longitudinal extent of the box, with longitudinally extending holding elements in the edge area of the legs of the U, which hold the bent rope loop in the box, but allow the rope loop to disengage from the holding position .
• the invention achieves a simple component, namely the substantially U-shaped box, an arrangement that can be easily arranged in the formwork for the manufacture of the precast concrete part.
• the dimensions, in particular at right angles to the end face of the precast concrete element, are small, so that there is generally no risk of a collision with other reinforcing elements.
• the box is sufficiently stable to absorb the bending forces. No special tools are required for the disengagement process.
• the opening that the invention provides in the box bottom is generally limited on all sides by the box bottom.
• the opening can also be provided in the edge area, so that it is open towards one end of the box.
• a sealing means closes the gap between the rope loop and the opening.
• a corresponding sealing means for example, a molded part made of plastic is proposed, which is held by the box as described below.
• an adhesive for example a drop of adhesive, synthetic resin or the like, between the inserted rope loop and the box, which on the one hand also provides a mechanical fixation of the rope loop with respect to the box and at the same time closes the remaining gap in such a way that no concrete penetrates.
• foaming is used.
• the sealing means are also selected, for example, so that they do not absorb any bending forces, that is to say, when the cable loop is bent, particularly when the cable loop is inserted into the box, do not absorb any bending forces or support the bending. This can be achieved, for example, by arranging the molded part appropriately in or on the storage box.
• the use of adhesive or foaming agent only closes the remaining gap, but these agents do not take on abutment functions with regard to the bending forces that occur.
• a shaped part in particular made of plastic, which acts on the rope loop part to be anchored is inserted into the opening.
• This molded part can easily perform a variety of tasks in cooperation with the box. On the one hand, it serves to deform the rope loop, whereby it interacts with the holding elements in the edge region of the legs of the U's. But it also results in a guide for the rope loop part to be concreted in, so that it assumes the desired position.
• the forrate part is designed such that it closes the gap between the rope loop and the opening.
• the molded part prevents concrete from penetrating into the inside of the box during concreting, which could hinder the subsequent erection of the rope loop.
• the molded part can have different designs. For example, it may have a flange that abuts the bottom of the box. In this or in other embodiments, it is provided that the molded part and the opening differ from the rotational symmetry in order to fix the inserted molded part in the opening by a rotary movement. If both parts, that is, the molded part and the opening, for example, are oval, the molded part can be inserted without further ado. In the event of an opening, a secure connection results in particular from the use of flanges or similar means.
• the molded part can, for example, consist of a hard, non-deformable material, in particular plastic. However, it is better if a material is used that has elastic properties so that it snaps into the opening.
• the molded part is inserted parallel to the longitudinal extent of the box bottom.
• the molded part can then, if desired, also interact with the side walls of the box.
• the means, which the rope loop part to be anchored substantially at right angles to Holds longitudinal extension of the box is integrally connected to the box as a bend.
• Such a configuration achieves very simple manufacture of the box, in which the bend which absorbs the bending forces is already integrated in one piece.
• Such an embodiment can be achieved, for example, by an appropriate punching process.
• the box bottom have a holding means on the inside and / or outside, which holds the molded part in the area of the opening.
• the molded part only has the function of closing the opening, which serves, for example, as a bend, to such an extent that no concrete can enter the box in the remaining gap between the opening and the rope loop.
• the holding means are, for example, also generated simultaneously with the introduction of the bend or opening. This can be done, for example, in the manufacturing process using an appropriate punching tool.
• a raised flap on the bottom of the box is used as a holding device.
• a corresponding configuration of the box is achieved by means of an appropriate injection mold.
• the holding means can be arranged in the storage box as well as on the underside of the storage box against the precast concrete element. At both points it is possible to apply an appropriate sealing means and to fix it with the holding means.
• the holding elements are preferably formed by strips directed inwards at the edge of the legs of the U. These strips can be obtained, for example, by bending.
• the strips preferably extend over the entire length of the box, whereby a substantial stiffening of the box is obtained, even if the effect as holding elements for the rope loop would only be necessary in a narrow area. This is why selective individual holding elements inside the box are possible to hold the rope back.
• the width of the strips should be equal to or greater than half the diameter of the wire rope of the rope loop. In this way, a secure hold for the inserted rope loop is obtained. However, there is still enough space between the strips to be able to raise the rope loop after moving the precast concrete part.
• the box is provided with end covers, which are obtained, for example, by bending. Such training is particularly recommended when the box is made of sheet metal. In this way, a one-piece construction can then be obtained with high rigidity and low manufacturing costs. It is also possible to provide an end cover, for example made of plastic, which is attached to the end of the box.
• a box In certain cases it is advisable for a box to have multiple openings. Such a box then carries a plurality of rope loops.
• suitable means are arranged on the floor and / or the side walls, for example ribs, projections or recesses.
• the box it is recommended that the box have a removable cover on the formwork side. In this way, there is little risk that concrete will enter the box when concreting.
• the cover which can be a film, for example, does not interfere with the erection of the rope loop. It can also be easily removed.
• the use of self-adhesive foils or tapes allows an optimal effect with minimal effort. If double-sided adhesive films are used, the box can also be easily attached to smooth formwork surfaces, such as those made of steel or plastic.
• Fig. 1 is a side view, partially in
• FIG. 2 shows a section through the representation of FIG. 1,
• FIG. 3 is a plan view of the representation of FIG. 1,
• the device according to the invention for connecting prefabricated concrete parts is inserted into the edge area of a precast concrete element in such a way that the surface 17 of the box 1 lies approximately in one plane with the outer surface 18 of the precast concrete element 19th
• the box 1 shown in the drawings is made from sheet metal, for example from galvanized sheet metal.
• the box 1 can also consist of plastic.
• the box bottom 2 forms the web of a U, while the side walls 16 form the legs 11 of the U.
• Both the floor and the side walls have means 14 for improving the anchoring in the precast concrete part 19, ribs 20 being provided in the floor and embossments 21 being provided in the side walls.
• an opening 4 is provided in the box bottom 2, which in the exemplary embodiments shown is formed, for example, by punching.
• the opening can be circular. But it can also have a different shape.
• a molded part 8 is inserted into the opening 4, which is made of plastic, for example.
• the molded part 8 has a recess 22 so that the molded part can be threaded onto the rope loop 5.
• This rope loop is formed by a piece of wire rope, the ends of which are connected to one another by a pressed-on clamping sleeve 23. After processing, the clamping sleeve 23 is equal to or larger than the recess 22 in the molded part 8 and smaller than the opening 4.
• the loop part 24 can be inserted into the box 1. In the inserted position, the loop part 24 is held by strip-shaped holding elements 7, which are formed by bending the upper edge 10 of the legs 11.
• the width of the strips 7 should be sufficiently large to accommodate the Hold the loop part securely. This is achieved, for example, if the width of the strips corresponds to at least half the thickness of the wire rope.
• individual holding elements can also be attached to the inside of the box, which retain the loop part.
• the rope loop is elastically deformed, the forces being absorbed by the box as a whole.
• the molded part 8 or 81 of the embodiment according to FIGS. 1 to 3 is made of elastic material. However, it is also possible to use a material which is not or not very elastic if the dimensions are such that the rope loop can be threaded. It is also possible to push the molded part 8 or 81 onto the wire rope ends before the sleeve 23 is pressed on, in which case the gaps between the wire rope and the molded part 8 can be kept very small.
• the molded part 8 should also ensure a seal of the interior of the box 1.
• end covers 13 which are obtained by bending. Subsequent closure elements such as plastic plugs are also possible.
• the strip-like holding elements 7 also allow the application of a tear-off cover, for example made of film, which also contributes to the fact that no concrete penetrates into the interior of the box.
• the film is torn open before the erection process.
• the exemplary embodiment in FIGS. 4 to 6 differs from that in FIGS. 1 to 3 essentially in that the molded part 83 used there and the associated opening 43 have a different configuration.
• the molded part 83 is designed like a slide and has a tongue part 25 which is elastically deformable by means of incisions 26. The molded part can be moved on the rib 27.
• the molded part 83 is inserted between the two rope strands of the rope loop 5, as a result of which they are held in place.
• the opening 43 is preferably designed in the manner of an elongated hole and allows the loop part 24 to be pushed into the opening from the bottom side of the box.
• the opening has been obtained by means of a bend 9, which forms a system for the rope loop 5, so that the desired bent position is obtained (see FIG. 4).
• the box bottom 2 also has holding means 90 which serve to hold the molded part 83 on the opening such that the remaining gap between the rope loop 6 and the opening is closed.
• the holding means 90 as well as the bend 9 and thus automatically also the opening 4 are expediently produced in one manufacturing step, for example a punching process. A simple and inexpensive manufacture of the subject matter according to the invention is thereby achieved.
• the holding means 90 on the underside, such as the bend 9 directed downward, in order to attach a corresponding molded part to it.
• the molded part here is, for example, fork-shaped in order to enable easy threading on the rope loop. As shown, the molded part is guided from the right against the opening 4 and is thus at the angle of the angled rope loop. It is also possible to use molded parts Lead openings for the rope ends and / or the molded part from the left (Fig. 4) against the rope loop.
• the molded part 82 and also the opening 42 are designed such that the insertion of the molded part 42 with the rope loop 5 is possible in a position which is rotated by approximately 90 ° to the final position in the assembled state , which is shown in the drawing.
• the molded part 82 and the opening 42 deviate from the rotational symmetry, as can be clearly seen from the illustration in FIG. 9.
• the flange 15 is kept sufficiently large and supplemented by a further flange 30 on the other side of the box bottom, so that the opening is securely closed after the rotary movement.
• the molded part 82 also has an extension 31 which holds the rope loop part 6 to be concreted in the desired position. The positioning forces for the elastic deformation of the rope loop are absorbed by the sheet metal part.
• the invention relates not only to the device presented at the outset, but also to a method for producing such a device.
• the method presented represents an inexpensive way to produce the described device.
• a precast concrete part is also described, which is equipped with a corresponding device and which is easier to process due to the design according to the invention.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Structural Engineering (AREA)
• Civil Engineering (AREA)
• Mechanical Engineering (AREA)
• Ceramic Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Joining Of Building Structures In Genera (AREA)
• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
• Electric Cable Installation (AREA)
• Conveying And Assembling Of Building Elements In Situ (AREA)
• Connection Or Junction Boxes (AREA)
• Moulds, Cores, Or Mandrels (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8026724

Family Applications (1)

Country Status (8)

Cited By (5)

Families Citing this family (42)

Family Cites Families (21)

• 1996
  • 1996-07-20 DE DE29612573U patent/DE29612573U1/de not_active Expired - Lifetime
• 1997
  • 1997-07-18 EP EP97941886A patent/EP0914531B1/fr not_active Expired - Lifetime
  • 1997-07-18 AT AT97941886T patent/ATE201736T1/de active
  • 1997-07-18 DK DK97941886T patent/DK0914531T3/da active
  • 1997-07-18 WO PCT/EP1997/003870 patent/WO1998003751A1/fr not_active Ceased
  • 1997-07-18 US US09/147,559 patent/US6102607A/en not_active Expired - Lifetime
  • 1997-07-18 AU AU43774/97A patent/AU4377497A/en not_active Abandoned
  • 1997-07-18 DE DE29723989U patent/DE29723989U1/de not_active Expired - Lifetime
  • 1997-07-18 DE DE29723990U patent/DE29723990U1/de not_active Expired - Lifetime
  • 1997-07-18 PL PL97331152A patent/PL187348B1/pl unknown
  • 1997-07-18 DE DE59703683T patent/DE59703683D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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