US 12,252,847 B2
Turnout arrangement with elastically supported turnout bases
Johannes Fürst, Riederberg (AT)
Assigned to PORR Bau GmbH, Vienna (AT)
Appl. No. 17/273,589
Filed by PORR Bau GmbH, Vienna (AT)
PCT Filed Sep. 6, 2019, PCT No. PCT/EP2019/073834
§ 371(c)(1), (2) Date Mar. 4, 2021,
PCT Pub. No. WO2020/049156, PCT Pub. Date Mar. 12, 2020.
Claims priority of application No. A 50763/2018 (AT), filed on Sep. 7, 2018.
Prior Publication US 2021/0332532 A1, Oct. 28, 2021
Int. Cl. E01B 1/00 (2006.01); E01B 3/40 (2006.01); E01B 7/22 (2006.01)
CPC E01B 1/004 (2013.01) [E01B 1/002 (2013.01); E01B 3/40 (2013.01); E01B 7/22 (2013.01); E01B 2204/01 (2013.01); E01B 2204/09 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A turnout arrangement of a slab track with a ballastless superstructure for forming a main track and a branch track, which branches off from the main track, for railway traffic, the turnout arrangement comprising:
a plurality of prefabricated turnout bases of untensioned reinforced concrete;
a casting compound, which is cast and hardened between the plurality of prefabricated turnout bases and a ground surface; and
a plurality of fastening areas, comprising rail support points provided on the plurality of prefabricated turnout bases for fastening of the main track and the branch track as well as for fastening further turnout components;
wherein the plurality of prefabricated turnout bases are elastically supported,
wherein at least one positive-locking arrangement is provided per prefabricated turnout base for positively holding the prefabricated turnout base horizontally with respect to the casting compound, wherein the positive-locking arrangement comprises first and second positive-locking elements, which are in positive active contact with one another, wherein the first positive-locking element is a casting opening kept free in the prefabricated turnout base, and wherein the second positive-locking element is a projection of the casting compound extending into the casting opening, wherein the projection and the casting opening is are configured such that introduced horizontal shear forces are below the maximum permissible load limit of the prefabricated turnout base and the projection, and
wherein an elastic layer is provided per prefabricated turnout base between the projection and the prefabricated turnout base, and wherein the elastic layer for at least one prefabricated turnout base is disposed between the prefabricated turnout base and the casting compound and extends continuously under a pair of adjacent rail support points that includes a first rail support point for the main track and a second rail support point for the branch track.