FI92510C - Process for making reinforcement, for concrete products, preferably for concrete piles, and reinforcement - Google Patents

Abstract

The invention relates to a method for producing reinforcement intended for concrete members, preferably concrete piles. Through internal means acting as strut members or compression members in the form of diagonally, or otherwise, acting struts, the longitudinally extending reinforcing bars 20 within an elongated coil are brought into place against the inside of the coil with a predetermined force, thereby stabilizing the coil. The struts can be arranged as diagonally acting elements in a reinforcement having four bars forming a square seen in cross-section or the struts can contact all or certain of the reinforcing bars, but preferably in such a way that the struts mutual orientation is changed as the supporting operation proceeds along the elongated coil. <IMAGE>

Description

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METHOD FOR MANUFACTURING REINFORCEMENT OF CONCRETE PRODUCTS, PREFERREDLY, CONCRETE Piles, AND REINFORCEMENT

The invention relates to a method for producing reinforcement according to the preamble of claim 1, for concrete products, preferably concrete piles. The invention further relates to reinforcement according to the preamble of claim 5.

It is known that concrete piles play an important role in strengthening the foundation. The piles usually consist of internal steel reinforcement and a concrete body cast around the reinforcement, most often with some form of end reinforcement.

15 In order to produce such piles, it is already known to stretch a steel wire from a uniform helix to a stretched helix, to place the stretched helix on a support on which the height can be adjusted, and to insert the reinforcing bars into the feeder.

In general, the height of the support can be adjusted, and in the first stage, two reinforcing bars or a rod-25 group are fed in and placed reciprocally at a certain distance from each other in a horizontal plane. The bars are then attached to the stretched steel wire coil in the reinforcement step, where the bonding can be performed at separate points, e.g. about 1 meter apart.

This attachment can be considered to hold the rods 30 by means of a tie wire, in which the rods simply hang.

‘When the placement in the first horizontal plane is completed, the support is raised and the corresponding feeding and fastening is done at the top of the loop-shaped steel-35 wire.

The result of such an attachment is reinforcement which is not completely stable, i. rods and coil 2

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intermediate attachment may not always be desired. It is therefore desirable to improve the quality of such an attachment.

In addition, reinforcement is a completely manual work-5 step, which requires a high speed and which, due to its monotony, becomes very tiring over time.

Due to the recent development of faster and faster casting machines that more or less fully automate one or more finished reinforcements, the pressure of the workers who have to perform the boring, monotonous reinforcement work at the speed required by the casting machine becomes.

A different type of locating method for reinforcing bars is disclosed in U.S. Pat. No. 1,556,178. In this publication, two wire strips with U-shaped loops at regular intervals are arranged around a helical reinforcement. The reinforcing bars are then inserted one at a time, the bars 20 tearing through the openings formed by the loops in a row. Although this method is more efficient than the reinforcement methods described above, it takes a lot of time to attach the wire strips to the coil and, in addition, high accuracy is required to feed the rods through the 25 loops. Because the rods must pass through the loops, the rods cannot be held tightly against the coil. The stability of such reinforcement is not yet optimal.

In view of the above, the invention provides a solution, not only to the stability problem of the rods, i. its quality in reinforcement in piles, but also a solution for strenuous, monotonous, manual reinforcement and the need for high precision during manufacturing. Since the problem is the same, e.g. in connection with reinforced concrete beams and other load-bearing structural members, the invention relates to concrete products in general, although concrete piles here li

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3 are currently the most interesting.

Thus, the invention provides a method of making reinforcement for concrete products, preferably for concrete piles, in which a stretched helix is formed from a steel wire and reinforced concrete bars are placed inside the helix and the body is used to hold the blade.

The method according to the invention is characterized by what is stated in claim 10 1. The reinforcement according to the invention is characterized by what is stated in claim 5.

The method is characterized in that the helix and the reinforcing bars are held together by a plurality of clamping members which are filled over at least two concrete bars or groups thereof and act between them and press the reinforcing bars into contact with the helix.

In one embodiment, in cross-section, as seen, the reinforcing bars or groups thereof form angles in an imaginary rectangle and the clamping means are formed as support members acting in the transverse direction in the transverse direction in said rectangle such that one support is in the first 25 nassa. In another embodiment, the clamping member is formed and positioned so that, when viewed along the circumference of the helix, it presses against three adjacent reinforcing bars or a group thereof against the helix.

In yet another embodiment, the clamping member 30 is formed and positioned so that, when viewed along the circumference of the coil, it presses all or groups of reinforced concrete bars against the coil.

The invention also provides reinforcement for a concrete member, preferably for concrete piles, comprising a steel wire 35 formed of a stretched helix and reinforcing steel bars disposed within the helix along its length, and a member for reinforcing the helix and the concrete bar.

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to hold the bars together.

Reinforcement is characterized in that a plurality of clamping members are spaced apart along the length of the helix and act between at least two reinforcing bars or groups thereof by pressing the reinforcing bars into contact with the helix and thus stabilizing the reinforcement.

In one embodiment, viewed in cross-section, the reinforcing bars or groups thereof form corners in an imaginary rectangle, the reinforcement comprising tensioning members acting as supports parallel to the perforator in said rectangle, and the supports being in successive directions.

In a further embodiment, the reinforcement comprises a steel wire shaped as a stretched coil and in which reinforcing steel bars are placed, said reinforcement being intended for concrete products, preferably concrete piles.

The reinforcement comprises a support member comprising a fastening member for attachment to the first reinforcing bar or group of bars and a fastening member for attachment to the second reinforcing bar or group of bars, the length of the support member being such that when fitted to the reinforcement, it presses against the reinforcement.

Of course, the invention also relates to a concrete element, preferably a concrete pile with said reinforcement.

The invention will now be described in detail with reference to the accompanying drawings, in which Figure 1 schematically shows a steel wire coil in its original form intended to form a coil in pile reinforcement;

II

5

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Fig. 3 shows the arrangement of Fig. 2 together with the feed rollers of the reinforcing bars, Fig. 4 schematically shows a partial view showing a cross section of a 5-sided reinforcement 10 or a support member, Fig. 7 shows another type of tightening or support member, and Fig. 8 finally shows another type of tightening or support member.

In Figure 1, reference numeral 10 refers to a twisted, compressed steel wire coil and number 10 'refers to the same coil, extended to a stretched coil 10'.

The length of the coil 10 'can be, for example, several met-20 holes, about 4 to 8 meters, and it is placed on supports 11, 12 and 13, the height of which can be adjusted. The holders 14, 15 and 16 in these supports fasten the coil 10 'in its extended shape and thus act against the spring forces therein.

25 Arrows 17, 18 and 19 mean that the heights of the respective supports can be adjusted. In the first vertical position of the supports, the first sar and the reinforcing bar and 20 are fed in between a pair of rollers 21, 22, of which the second roll is a machine-driven roll. A single be-30 ton steel bar 20 or a plurality of such, e.g., two, are placed in a first vertical position so as to extend along the entire helix 10 'and have a certain mutual distance in the horizontal plane. Thereafter, the supports 11, 12 and 13 are lowered slightly, sufficiently 35 so that the next batch of reinforcing bars 20 can be placed in place and adjusted horizontally at a mutual distance to a plane substantially in contact with 6

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the coil 10 'with sisåpuolen.

When the reinforcing bars and supports are in this position, the reinforcing bars are temporarily fixed in place by means of the spacers shown in Figure 5.

5 The intermediate members can be placed not only in the direction of the diagonal, but also along the sides of the imaginary rectangle.

After pre-attachment of the rods inserted therein, the rod system and the 10 stretched coils are ready to be attached to each other.

Figure 4 shows how the four reinforcing bars are arranged to form a four-sided cross-section 23, which is illustrated by a broken line. Section lines 24, 25 mean that a part of the stretched coil 10 'is viewed, somewhere between its ends, which ends, as mentioned above, are temporarily fastened by means of spacers such as Fig. 5, or shorter such members are arranged along the straight edge. . In Figure 5, the tensioning or support-tongues 26 are shown in the form of stretched supports, in which the groove 27 is arranged symmetrically with respect to the support at one end and the groove 28 is rotated 90 ° relative to the groove 27. Thus the groove 27 is placed on a corresponding reinforcing bar. by means of a rubber mallet, the groove 25 28 is crushed into place on the reinforcing bar 20.

: Then add an additional support or clamping member at a suitable distance from the previous one, eg η. 1 meter behind. The latter support 26 is oriented so that it is in a different diagonal direction relative to the first support.

Because the supports 26 are used as a means to press the concrete steel bars outwardly against the inside of the coil, a strong and easily reproducible arrangement is obtained to enhance the stability of the pile reinforcement. At the same time, this is achieved with a few simple manual steps. Thus, the use of bonding wires with unpredictable retention capacity should be avoided, and no further welding is required, I! 7

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from which embarrassing welding gases emit.

Figure 6 shows in cross-section how the three reinforcing bars 20 are arranged by means of a second type of tensioning support system 26.

Figure 7 shows a tensioning support system 26b cooperating with all four sets of concrete bars 20. In the embodiment of Figure 7, there are two reinforcing bars in each corner group of bars.

Figure 8 shows another type of rectangular support clamping or support arrangement in the form of a four-sided frame.

Of course, support or additional applications of support members are possible within the scope of the invention, which is limited only by what is stated in the appended claims.

Claims (7)

9251 C 8 i. A method for producing reinforcement for concrete products, preferably concrete piles, in which a stretched coil (10 ') is soldered from steel wire (10) and reinforced concrete bars (20) are placed that the helix (10 ') and the rebar bars (20) 10 are held together by a plurality of clamping members (26, -26a; 26b; 26c) which are pushed over the at least two rebar bars or groups thereof and act between them and press the rebar bars with the helix (10 '). 2. A method according to claim 1, which comprises a ring (20) or a group of parts of a horn and a fence (23) set as a cross-section, which can be obtained from a spanner (26) in the form of a stator i nåmnda 2. fyrhorning (23) så, att en stotta ligger i en forstå diagonalriktning och den intilliggande stottan i den andra diagonalriktningen. A method according to claim 1, wherein, seen in cross-section, the reinforcing bars (20) or groups thereof form angles in an imaginary rectangle (23), characterized in that the clamping members (26) are formed as support members acting parallel to the perforator in said straight line. ) so that one support is in the first transverse direction and the adjacent support is in the second transverse direction. 3. A formulation according to the invention, which comprises a body (26a) in the form of a helix (10 '), which comprises a spiral (10') of a three-dimensional ligand arm (20) or a group of spirals (20). 10 '). A method according to claim 1, characterized in that the clamping member (26a) forms; and positioned so that, viewed along the circumference of the helix (10 '), it presses against three adjacent reinforcing bars (20) or groups thereof against the helix (10'). A form according to the preceding claim, as shown in Fig. 30, having a spherical organ (26b, 26c) in the form of a placental spiral (10 '), which comprises a three-dimensional armature (20) or a group of spirals. (10 '). Method according to claim 1, characterized in that the clamping member (26b, 26c) * is formed and positioned so that when viewed along the circumference of the helix (10 ') it presses all the reinforcing bars (20) or groups thereof against the helix (10'). An armature for a concrete product, for example a concrete arm (10), a formwork for a helical spiral (10 '), and an armature (20), and an armature (20), a placebo for an inverted helical line, for example - · · 11. 11 9251 C len and armeringsjarnen, kånnetecknad av, att till armeringen hor en stort flertal spánnnorgan (26, 26a, 26b, 26c), vilka a placerade på ett avstånd från varandra i spiralens (10 ') långdriktning, och vilka 5 verkar mellan åtminstone två armerings-jårn (20) eller grupper av sådana tryckande armeringsjårnen i contact med spiralen and stabiliserande armeringen. Reinforcement of concrete products, preferably be tonal piles, with reinforcement comprising a steel wire (10) forming a stretched coil li 9251 C 9 (10 '), and reinforcing steel bars (20) disposed inside the coil along its length, and means for holding the helix and the reinforcing bars together, characterized in that the reinforcement comprises a plurality of Kiris-5 members (26, 26a, 26b, 26c) spaced apart along the length of the helix (10 ') and acting between at least two reinforcing bars (20) or groups thereof by pressing the reinforcing bars into contact with the coil to stabilize the reinforcement. 6. An armature according to claim 5, having armrests (20) or groups of said horns 10 and in said embodiment (23) set as a cross-section, in which case a spherical body (26) is arranged in a diagonal direction stottor, varvid på varandra f61jånde stottor år riktade i skilda diagonalriktningar. Reinforcement according to claim 5, wherein the reinforcing bars (20) or groups thereof form angles in an imaginary rectangle (23) in cross-section, characterized in that the clamping members (26) are arranged at right angles to the perpendicular to the perpendicular, is directed in the directions of different diagonals. Reinforcement according to claim 5, characterized in that the reinforcement comprises a tongue (26) comprising a fastening member (27, 28) for fastening to the first reinforcing bar (20) or group of bars and fastening member (27, 28) for fastening to the second reinforcing bar. (20) or a group of bars, wherein the length of the support member (26) is such that when it is fitted to the reinforcement, it presses the reinforcing bars; (20) outwardly in contact with the coil (10 '). 9251 C l Forf arande for f ramstållning av armering for betongprodukter, foretrådesvis for betongpålar, vid 5 vilket forfarande ståltråd (10) forms till en långst-råckt spiral (10 ') och armeringsjårn (20) placeras invåndigt i spiral (10) och medel for sammanhandland av spiralen and armeringsjårnen anvåns, k a η ne -tecknat av, att spiralen (10 ') och armerings- 10 jarnen (20) bringas att hålla samman medelst et flertal spånnorgan (26; 26a; 26b; 26c); Vilka skjuts in på ämtminstone två armeringsj årn eller grupper av sådana och verkar mellan dessa och trycker armeringsjårnen i contact med spiralen (10 '). An armature according to claim 5, which is further adapted to be mounted on a stator (26), to be mounted on a fixture (27, 28) for fastgoring and to a fixture (20) or a group of armor and fixture (20). 27, 28) for fast-20 Goring i ett andra armeringsjårn (20) eller en grupp av armeringsjårn, varvid stottorganets långd ådan, fig då det anpassas till armeringen, trycker det armerings-jårnen (20) utät i contact med spiralen (10) '). · ·