Patent classifications
E01B3/28
High strength, integrally pre-stressed monoblock concrete crosstie with optimal geometry for use in ballasted railways
A monoblock concrete crosstie for railway tracks that achieves a high performance in operation includes a steel structure that is formed from ultra-resistant high strength steel plates embedded in a concrete element and having pre-stressed cold rolled wires with ends that form button head knots which are anchored to the steel plates. A faceted geometry allows optimal material usage and in turn increases the crosstie-ballast interlocking and stability with respect to the support surface.
High strength, integrally pre-stressed monoblock concrete crosstie with optimal geometry for use in ballasted railways
A monoblock concrete crosstie for railway tracks that achieves a high performance in operation includes a steel structure that is formed from ultra-resistant high strength steel plates embedded in a concrete element and having pre-stressed cold rolled wires with ends that form button head knots which are anchored to the steel plates. A faceted geometry allows optimal material usage and in turn increases the crosstie-ballast interlocking and stability with respect to the support surface.
DURABLE RAILWAY TIE
A railway tie being constructed of an engineered cementitious composite (ECC) material having: (1) a minimum of 2% tensile ductility of ECC, (2) complete absence of alkali-silica reaction (ASR), (3) high fatigue resistance of ECC at least five times that of normal concrete, (4) self-healing ability of ECC requiring only water and air, and (5) customization of ECC for lower stiffness in the tie (60% that of normal concrete) and higher abrasion resistance in the seat (three times that of normal concrete).
Railway track sensor system for vertical surface pressure
A railway track (1) including at least two railway rails (2) and at least one measuring apparatus (3), disposed under at least one of the railway rails (2), for measuring vertical contact pressure, wherein the measuring apparatus (3) has at least one mat-shaped or planar carrying body (4) with a multiplicity of measuring sensors (5), disposed at a distance from one another, for measuring the vertical surface pressure at the respective positions of the respective measuring sensors (5).
Railway track sensor system for vertical surface pressure
A railway track (1) including at least two railway rails (2) and at least one measuring apparatus (3), disposed under at least one of the railway rails (2), for measuring vertical contact pressure, wherein the measuring apparatus (3) has at least one mat-shaped or planar carrying body (4) with a multiplicity of measuring sensors (5), disposed at a distance from one another, for measuring the vertical surface pressure at the respective positions of the respective measuring sensors (5).
Sleeper block unit for railway track systems
The sleeper block unit (1) for railway track systems consists of a sleeper block (2) and of a sleeper shoe (3) that partly surrounds the sleeper block (2). The sleeper block (2) has a head portion (4) and a base portion (6), the head portion (4) extending beyond the base portion (6) in length and in width, thus forming a step (10). At the upper edge of the sleeper shoe (3), a surrounding, upwardly and outwardly extending sealing lip (14) that lies against the step (10) is arranged. As a result, during vertical movements of the sleeper block (2) in the sleeper shoe (3), the sealing lip (14) is deformed substantially vertically in the elastic range rather than rubbing against an outer wall of the sleeper block as in known sleeper block units. In this manner the sealing lip is subject to reduced wear so that the sealing effect is maintained for a longer period and the sleeper block unit (1) has a longer lifetime.
Sleeper block unit for railway track systems
The sleeper block unit (1) for railway track systems consists of a sleeper block (2) and of a sleeper shoe (3) that partly surrounds the sleeper block (2). The sleeper block (2) has a head portion (4) and a base portion (6), the head portion (4) extending beyond the base portion (6) in length and in width, thus forming a step (10). At the upper edge of the sleeper shoe (3), a surrounding, upwardly and outwardly extending sealing lip (14) that lies against the step (10) is arranged. As a result, during vertical movements of the sleeper block (2) in the sleeper shoe (3), the sealing lip (14) is deformed substantially vertically in the elastic range rather than rubbing against an outer wall of the sleeper block as in known sleeper block units. In this manner the sealing lip is subject to reduced wear so that the sealing effect is maintained for a longer period and the sleeper block unit (1) has a longer lifetime.