CH199994A - Railway superstructure. - Google Patents

Description

  

  Railway superstructure. The present invention relates to a railway superstructure with reinforced concrete shafts with widened support surfaces at both ends. With such sleepers, it is very difficult to use staples to create a correct support on the ballast, which is common as ballast, and yet it is absolutely necessary to support the sleeper designed so that,

      their wide end parts lie perfectly on in order to achieve an even distribution of the load.



  In the railway superstructure according to the invention, this is achieved in that the sleepers are placed on both ends of a fine-grained packing.



  The packing can consist of gravel, sand or chippings and ensures that the selector shaft rests perfectly on both ends of the support, even after a long period of operation, since such packing is of course also set evenly, provided that the ground is good. With resp. less stable soil, ider pack is expediently a crushed or. rolled-in ballast layer underlaid.



  Two exemplary embodiments of the subject matter of the invention are shown in the drawing.



       FIG. 1 shows a cross section through a track superstructure according to a first embodiment and FIG. 21 shows a plan view of this; Fig. 3 shows a longitudinal section along the line Ijja-Jjla respectively. IIIb-IIIb in Fig. 1; Fig. 4 shows a second embodiment of a track superstructure in cross section, <B> and </B> Fig. 5 </B> a -en floor plan, this;

         Fig. 6 shows a longitudinal section according to Vja-Via respectively. VIb-VIb in Fig. 1. </B>



  The EisenbaInoberbau nacli, the embodiment shown in Fig. <B> 1 </B> to <B> 3 </B> has a concrete rail <B> 1 </B> under each Soli wave end, which in a - Excavated recessed Lmg of the subgrade P is inserted.

   A layer of contaminated (old) gravel is applied to the subgrade 1, which is tamped down within the frame, and is tamped down so that the two frames are in part with each one in a sehotter bed 2, with the purpose of de- "v # as, fermentation from the inside to the outside horny-egg surface, are filled.

   Above the gravel bed <B> 291 </B>, an approx. <B> 2 --- 3 </B> thick layer of fine grit <B> 3 </B> is tamped on each frame and one on top of it Packing of chippings, gravel or sand 4 applied, which is compacted by lbrating or pounding. The threshold <B> S </B> with its wide end parts is placed on the leveled packs <B> -1 </B>. so that the middle part does not rest.

    Between the sleepers there is a fill <B> 5 </B> made of old gravel and earth. which on the sides of the track body is covered with a layer of gravel or sand <B> 6 </B> except for the upper edge of the sleeper. The concrete frames are provided with drainage holes la for drainage of the superstructure.



  In the embodiment shown in FIGS. 4 to 6, the track body is delimited on both sides by concrete walls 10 embedded in the subgrade. On both sides of the rolled subgrade, a central strip 2 filled with altein Sehot- (he a Pak- kun -t 'ans -Ki (-, 9 or #Splitt, on which the sleepers <B> S </B> are hung up like that.

       that its middle part is exposed. The concrete walls <B> 10 </B> prevent the pack 4 'from giving way to the side.



  The sleepers <B> S </B> are provided in the middle part on their lower surface with projections <B> v </B> which engage in the packs 4 'and prevent a displacement of the sleeper, especially in the transverse direction. In addition, in order to prevent migration, especially in the longitudinal direction of the threshold, the threshold is provided with inclined grooves or projections on its lower surface. The longitudinal walls <B> 10 </B> which prevent the escape of the packing 4 'have drainage openings Drainage of the railway listener.

 

Claims (1)

PATENT CLAIM: Railway superstructure with ferro-concrete shells with widened contact surfaces at the ends, characterized in that the sleepers at both ends are placed on a fine-grained packing. SUBSTANTIAL CLAIMS: <B> 1. </B> Railway superstructure According to the patent claim, characterized in that a concrete frame is arranged on the subgrade under each sleeper block, which frame contains the packing over a ballast bed. Railway superstructure according to patent claim, characterized in that concrete walls are used on both edges of the track body, between which the packs with a middle ballast strip are inserted. <B> 3. </B> Railway superstructure according to patent claim and dependent claim 2, characterized thereby, (let the sleepers, for the purpose of see i-untr gomegen shift uno iiii% bn-C in the body, especially in the transverse direction, on the lower flat projections that grip into the packings are provided 4. Railway superstructure according to patent claim and dependent claim 2, characterized in that the support ends of the sleeper on the lower surface are provided with oblique grooves or projections for the purpose of preventing wandering, especially in the longitudinal direction of the sleeper.