FI92623C - Base System - Google Patents

Description

92623

Anturajårjestelmå - Sockelsystem

The invention relates to a footing system consisting of a cylindrical-5 disposable formwork shell which remains on the surface of a concrete casting, which consists mainly of a corrugated metal plate, in which the longitudinal direction of the corrugations is substantially perpendicular to the axis of the cylindrical axis. The invention also relates to a method of manufacturing a moldable sheath for use.

Finnish patent 84,926 describes a disposable, mainly rectangular mold assembly which is suitable as a sole mold. The rectangular foot is subjected to bending stresses in the mold wall due to the casting pressure or the pressure caused by external filling, and the structure becomes heavy. Due to the structure, the rectangular foot mold also has a lot of assembly work. Of these factors, the joh-20 support mold is a cotyledon and its competitiveness is poor.

Finnish patent 74,096 discloses an underground foot structure based on a concrete mold. Such a foot mold is heavy and large, cumbersome and expensive to transport 25 and to be handled over a distance.

U.S. Pat. No. 2,519,575 and DE-31 21,418 disclose cylindrical foot molds based on a flexible and easily bendable sheet-shaped mold wall. For this purpose, in the former publication a corrugated plate is used, which is bent so that the longitudinal direction of the corrugations runs in the direction of the axis of the cylinder and in the latter publication a smooth plate. In both cases, reinforcing rims are needed to keep the mold wall oi-35 in a large shape during casting, which makes the structure complicated and increases the cost.

DE-587 344 discloses a lyon pile consisting of a plurality of successively arranged, downwardly decreasing, helically shaped casing parts with protective and reinforcing collars. During piling, there is a pile core inside the jacket part, which is then removed, after which concrete is poured inside the jacket 5. The result is a long concrete pile. The structure and mode of operation shown is in no way useful in conventional foundation work where the sensor is cast on top of the ground at the bottom of the excavated pit or, if necessary, on a lyon pile already in the ground to further distribute the load.

It is therefore an object of the invention to provide a footing system in which the formwork jacket is very light and simple and thus easy to transport and handle, but still withstands the pressure of the concrete casting. The goal is such a system, in which concrete reinforcement would also be easy and fast, but would give good strength.

The problems described above can be solved and the objects defined above are achieved by the sensor according to the invention, which is characterized by what is defined in the characterizing part of claim 1.

The main advantage of the invention is that the structure of the mold-25 of the sole is very simple and inexpensive and that it is easy to handle due to its lightness. However, the formwork of the footing is so strong that the filling of the ground can be done immediately after the installation of the formwork, whereby the area of the foundation of the building is made even. This makes the concrete level 30 easy, because all the molds are accessible, for example, by vehicles to the concrete feed.

In the following, the invention will be described in detail with reference to the accompanying drawings.

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Figure 1 shows the mold shell of a sole according to the invention axonometrically.

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Figures 2A-2C show three different corrugated plate shapes along the mold shell.

Figure 3 shows the arrangement of the reinforcement elements 5 according to the invention inside the mold.

Figure 4 shows an application of a mold jacket according to the invention.

Figure 1 shows a cylindrical disposable mold shell 1 of the sole according to the invention, which divides the surface of the concrete casting, and which consists of a corrugated metal plate. The mold shell 1 has a longitudinal direction P of the corrugations substantially perpendicular to the axis A of the cylindrical shape. This mold sheath 1 is assembled from one or more pieces of corrugated sheet bent into a curve. In Fig. 1, a cylindrical mold jacket is formed of two semi-circular corrugated sheet pieces 6a and 6b by joining them at 20 transverse seams against the longitudinal direction P of the corrugations. . In other words, the mold sheath 1 according to the invention does not require circumferential rims or axial beam-like reinforcements, since the corrugated shape stiffens the structure so that the shape of the circumference does not change and the cylindrical shape of the mold prevents axial deformations.

According to the invention, the mold sheath is formed from pieces of corrugated metal sheets known per se by bending them into curved pieces in the corrugation direction P. Fig. 2A shows a trapezoidal corrugated corrugated sheet portion, Fig. 2B shows a curved corrugated corrugated sheet portion, and Fig. 2C shows a corrugated sheet with a salmon-tail-shaped corrugated sheet, all of which are preferred for use in making a mold sheath according to the invention. If the mold sheath is made of a single piece of corrugated sheet, 4 92623 this piece is bent into an approximately circular shape and the free edges of the Kap piece are joined together by overlapping. If the mold sheath is made of two pieces of corrugated sheet, two kappa-5s of slightly more than half-semicircular shape are bent, which are joined together by overlapping their free edges, as shown in Fig. 1. Similarly, if the mold sheath is to be made of three or four or more pieces of corrugated sheet, the shorter of the woman is bent. parts of an arc which are joined at their free edges by overlapping each other.

The joints 7 of the corrugated sheets can be realized, for example, with drill screws 8, pop rivets, gluing, sealing, welding or in some other suitable way. The NamS transverse joints 7 can advantageously be made at the foot mounting location, whereby the transport of the foot sheath is simple, especially in the case that the sheath is formed of two or more parts.

Of course, the joints 7 can also be made in connection with the shaping of the corrugated sheet, for example at the factory, and in this case in particular in the case that the mold sheath is made of a single piece of corrugated sheet. In this case, of course, the transport of the mold diapers is a little more space consuming. In any case, the transport of the mold casings is very simple due to their low weight. On-site assembly according to the former embodiment is very simple, as no additional reinforcements are required, but the joints 7 can be made by almost any suitable joint method that each building site has the possibility to implement.

The footing system according to the invention also comprises a concrete reinforcement 2 consisting of reinforcing elements 3, each reinforcing element 3 consisting of a plurality of adjacent and preferably parallel reinforcing bars 4 connected to each other by or on one of the two bars. The connection of the rods 5 and the transverse rods 5 is preferably made strong by welding, whereby the transverse rods at the same time act as an effective anchor for the rod rods 4. For the concrete casting of the foot, two or more reinforcement elements 3 are placed inside the mold shell 1 transversely to each other, as can be seen in Fig. 3. Preferably, the reinforcement elements 3 are perpendicular to each other. The structure of the concrete reinforcement TSma effectively distributes the load coming in the direction of the axis line A in the cross-sectional area of the foot-10 le, and in particular the transverse bars 5 anchor the pSat of the reinforcement bars. It is clear that the reinforcement elements according to the invention can be placed in the foot in several and different ways.

Since the formwork jacket according to the invention is very strong and rigid to carry both external and internal loads, it is first possible to operate in the core by filling the environment of the installed foot molds with soil to the final surface level, making it easy to cast concrete from level. Another structure provided by the molded casing according to the invention is to place two molded casings 1 'and 1' 'of different diameters, to place the concrete reinforcement and to pour the concrete into an annular space 9 between them. unfilled or tUse with cheap and inferior soil material on foot. This method of use is shown in Fig. 4. With two mold diameters of different diameters, a flat and precise height of the upper surface of the foot can also be realized, regardless of the varying height of the foundation base. This can be achieved by placing the larger diameter mold jacket directly on the ground, regardless of its height, and by placing the smaller diameter mold jacket at the correct height from the top surface.

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Typically, the foot system according to the invention described above uses circular cylindrical mold sheaths, but this is not essential, but oval or other shaped mold sheaths can be used, for example, as needed. Thus, the mold sheaths can also be triangular, square or polygonal in cross-section with rounded corners and at least slightly convex sides. These can be set in a suitably shaped foot assembly or combination.

Claims (5)

1. Socket system, consisting of a disposable cylindrical mold casing (1), which remains as the surface of the concrete casting, and consisting mainly of a wavy metal sheet, in which the longitudinal direction (P) of the waves is substantially angular to the axis line (A) of the cylinder mold, and of a substantially horizontal concrete reinforcement (2) remaining in the concrete casting, characterized in that the mold casing (1) is substantially bracket-free and consists of two or more wave-shaped pieces (6a, 6b) which are bonded with reinforced joints. (7) transverse to the longitudinal direction (P) of the waves into a cylindrical mold casing, and in that the concrete reinforcement (2) comprises perpendicular reinforcing elements (3), each consisting of a plurality of adjacent reinforcing bars (4) , which in their spirits are joined together by a transverse bar or transverse bars (5). 2. Socket system according to claim 1, characterized in that said joints are carried out with drill screws (8), pop rivets, gluing, jointing, welding or in an analogous manner and / or by overlapping the edges of the scales. 3. Base system according to claim 1, characterized in that the concrete reinforcement (2) comprises reinforcing elements (3) placed crosswise, advantageously perpendicular to each other. 4. A plinth system according to claim 1, characterized in that the plinth mold comprises two mold casings 1 'and 1' 'of different diameters and located almost concentrically, between (9) which the concrete reinforcement (2) is placed and the concrete is cast. Socket system according to claim 1, characterized in that the shape jacket (1) is either a circle, an oval, a rounded triangle or square or a polygon in a notch angular to the axis (A).