FI58192B - ANORDNING VID JORDARMERING - Google Patents

Description

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Wa [b] <11) utläggningsskrift 501 92 c (45) Patent granted 10 12 1900 Patent oedJelat 'S' ~ v ^ (51) Kv.ik? /Int.a.3 E 02 D 17/20 FINLAND —FINLAND ( 21) Pw # nttlh «k * mu« -Ptt * nt »wekning 1857/7 ^ (22) KUkwnltpUvi —AmBknlnpdtc 18.06.7 ^ (23) AlltupIJvl — GlWgh * t» d »g 18.06.7 ^ (41) Tullut | ulklMkst - Bllvlt offtntllg 22.12.7 ^

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Patent and registration authorities Aiweksn utitgd och uti. $ Krtft «i pubik« r * d 29 · 08.80 ^ (32) (33) (31) Pyydetty ttuolkaut — Bogird prtorltet 21.06.73

Sweden-Sverige (SE) 7308792-6 (71) AB Fodervävnader, Viskastrandgatan, S-501 OH Boras, Sweden-Sverige (SE) (72) Bengt Broms, Vällingby, Oleg Wager, Bromma, Sweden-Sverige (SE) (7) * 0 Oy Kolster Ab (5U) Device for reinforcing the ground layer - Anordning vid jordarmering

The present invention relates to a device for reinforcing a soil layer by means of a mat containing at least one corrosion-resistant metal or synthetic material, which is placed in a plane substantially parallel to the ground.

Reinforcing devices of this general type are increasingly (especially in Glove and Japan) replacing existing, both expensive and bulky and heavy steel reinforcements, mainly in the form of drawbars and anchor rods, designed to protect filler structures for varying purposes against rolling and collapse.

~ However, the ground reinforcements used so far in carpets have not proved to fully meet the efficiency requirements and their use is limited to a relatively small area.

The device according to the invention enables more general use and the associated better reinforcement efficiency, so that the carpet is firmly anchored at both end parts to a beam device made of concrete or the like, each beam device consisting of two beam elements stacked with coverings between which the carpet ends are attached. in this case with compression straps for compressing the elements.

The structure according to the invention can be used to stabilize embankments on weak substrates, to reduce the ground pressure on various walls, as well as to make the walls themselves, piers, station platforms and the like, the invention is stabilize the.

The invention is described in more detail below with reference to the accompanying drawings.

In them, Fig. 1 shows a schematic perspective view of a station platform or part of a loading dock, Fig. 2 shows on a larger scale an element or module unit used in the structure of Fig. 1, Fig. 3 shows a schematic perspective view of a dock (or wall), Figs. sections of an equipped street, and Fig. 7 shows a section of a ramp.

The station platform or loading platform shown in Figure 1 has rails and sleepers marked with the numbers 1 and 2 on both sides of the structure. In the case shown, it has walls or walls made of prefabricated, primarily concrete, stacked, plate-like elements 5. The elements are held vertically and laterally on the one hand by the upper edges of each element and the other side edges respectively (Fig. 2) in the form of ribs 4 and by the gripping members in the form of corresponding grooves 5 at the lower edges and the other side edges, respectively. through the schematically shown vertical channels 6.

Between the horizontal gripping members of the elements of each parallel wall, a corrosion-resistant material, primarily the corresponding ends of the mats 7 of synthetic fiber fabric, is attached. The figure shows two such mats delimiting the three layers of earth. The anchoring of the carpets to the concrete elements results in each such element (including the two lower ones) being subjected only to the downward pressure of each soil layer alone, instead of increasing pressure over the entire depth, as has been the case in the past with increasing downward wall thickness. Thus, on the one hand, the elements can be made constant in thickness and, on the other hand, kept surprisingly thin.

The figure also shows a couple of secret ditch holes in the ground.

Fig. 2 shows in more detail an example of a concrete element 3 provided with ribs 4 at its upper and second side edges and grooves 5 at the lower and second side edges. · The four channels 6 schematically shown in Fig. 1 are again shown in Fig. 6b and 6a 'and 6b'. The purpose of the ducts is to facilitate installation and orientation when building a wall. Thus, first, the lowest elements are placed laterally in contact with each other and one more row of elements is placed on top of them, after which the round irons are introduced into the channels 6a and 6b. Before placing the second row of elements, a first layer of carpet (preferably the same width as the elements) is placed at its ends on top of the elements. Before setting the third row of elements, a new layer of carpet is introduced, etc. It must be emphasized that the earth filling is layered with the carpets.

Thin and thus relatively light concrete elements, together with the control procedure described above, greatly facilitate construction, which can take place both quickly and accurately, in contrast to the prior art where heavy walls were cast into thoroughly constructed molds and could not be used until after hardening.

The elements are shown to be provided with secret ditch holes 9 at the bottom ·

In the pier and wall structure according to Fig. 3, the wall 10 itself corresponds completely to the left wall or wall of Fig. 1. The figure shows particularly clearly the uniform thinness of the wall made possible by the idea underlying the invention. On the left side of the pier wall there is water 11 and on the far right a somewhat steep ramp 12. Since there is no wall on the right, the right ends of the carpets 7 must be anchored in another way, namely by attaching the end edge of each carpet between two (concrete) beams 13 and 14. The fastening between the beams can take place with gripping elements in the same way as in the wall 10 and / or with bolt ties or the like. Wall 10 is presented as established for piles 15 ·

The reinforcement for the embankment filling on a weak substrate, consisting of two pairs of concrete beams 13 and 14 and an intermediate mat 7, is shown in Fig. 4 »Fig. 3 shows the reinforcement for stabilizing the embankment brush and Fig. 6 the reinforcement of a pavement with a sidewalk.

Finally, Fig. 7 shows a ramp stabilization in which the mat 7 is anchored to the embankment with a pair of beams 13,14 and passed along the ramp and if necessary - i.e. when the ramp is steep and the mat length is too short to give , which are located at strategic distances from each other for geotechnical reasons.

Overall, the invention offers the possibility of using prefabricated, material-adjusting and thus both easily movable and easy-to-handle element "modules" for a fast and economical way of constructing station platforms and quay structures and for stabilizing ramps, road edges and embankments, etc.

11 58192

The invention is not limited to the embodiments described above, but various modifications are possible within the scope of the invention, in particular the exchange of the details shown for other equivalent values. Thus, the cooperating gripping members of the elements (not necessarily concrete) can be modified in many ways, and the guide irons running in the channels in the elements can be replaced by fixed guide pins intended to be inserted into the corresponding holes of the adjacent element. Carpets made of wood can form a corrosion-free metal mesh instead of synthetic fibers (polyester fabric); in general, the mat material must have a relatively high elasticity index and a roughly reversible load shrinkage. Since the carpets normally correspond to a relatively higher cost factor of the element / carpet combination, the overall costs can be reduced to the extent that geotechnical conditions allow, by excluding the carpets vertically from certain element seams. The mats can also be set to rotate every other element from the cut ends instead of being fastened.

Claims (7)

Device for reinforcing the ground layer by means of a mat (7) comprising at least one corrosion-resistant metal or synthetic material, placed in a plane substantially parallel to the ground, characterized in that the mat (7) is firmly anchored at both ends to a beam device (3 »13» 14. Device according to Claim 1, characterized in that the contact surfaces of each element (3 »13» 14) have corresponding gripping elements (4 »5) for stabilizing the elements and strengthening the adhesion to the intermediate ends of the mat. Device according to Claim 2 or 3, characterized in that each beam element (3) has gripping elements (4> 5) at both the upper and lower edges> so that an arbitrary number of such elements can be stacked on the coverings to form a complete wall, anchored to these elements numerous carpets (7) coverings. Device according to Claim 2, characterized in that the gripping elements are in the form of at least one longitudinally extending rib (4) and in the form of a receiving groove (3), respectively. Device according to Claim 3, characterized in that the gripping elements (4> 5) are also on the side edges of the elements (3). 5 58192 Device according to one of Claims 1 to 3, characterized in that the beam elements (3) are arranged to accommodate bar elements, such as round irons, which have a directing and locking effect on the vertical channels (6). Device according to one of the preceding claims, characterized in that the elements (3; 13, 14) included in the beam device are prefabricated and made to standard dimensions in both the vertical and longitudinal directions in order to enable a desired, simple erection and dismantling.