Prestressed concrete cross tie having increased fatigue life

Details Prestressed concrete cross tie having increased fatigue life Prestressed concrete cross tie having increased fatigue life

1986-02-06

1987-12-15

Raduazo, Henry E.

Railways: surface track

Ties

Nonmetallic

52223R, E04C 310

Patent

active

047127350

ABSTRACT:
In a prestressed concrete cross tie, a layer of steel reinforcements are located at or near the neutral axis of the cross tie section to minimize fatigue stress fluctuations. Deviation from the neutral axis is not great enough to cause stress fluctuations to exceed the endurance limit of the material. Because fatigue failure of prestressed concrete members is principally associated with reinforcement failure, increased fatigue life of the cross tie is achieved.

REFERENCES:
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patent: 4116010 (1978-09-01), Vidal
patent: 4373837 (1983-12-01), Lin
Materials and Methods of Architectural Construction .COPYRGT. 1958, by John Wiley & Sons, Inc.

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