Abstract: Ballasted prestressed concrete single track railway bridges, consisting of several box girders with spans of 25, 50, 75, and 100 ft

Abstract: The dynamic response of coupled extensional‐torsional systems caused by variable forces and torques Is discussed. The general solution to the equations of motion is found, and closed‐form solutions are obtained for various ...

Abstract: This paper presents a theoretical investigation of the coupled extensional-torsional vibration of helical springs. The study shows that two types of periodic wave will propagate through the spring, ...