DYNAMIC-RESPONSE OF SINGLE-SPAN BEAM BRIDGES TO A SERIES OF MOVING LOADS

The paper makes a contribution to the problem of a stream of loads crossing a single‐span beam bridge. There are considered the basic load models, in the form of a stream of fixed amplitude forces, unsprung masses and viscoelastic oscillators. The matrix equations of motion of the system are formulated and discussed. The problem of dynamic stability and steady‐state response of a bridge carrying a periodic stream of inertial loads is formulated and solved. The paper also includes a vibration study of a beam bridge subjected to a uniform stream of moving loads, of a limited or unlimited number of load cycles. Copyright © 1990 John Wiley & Sons, Ltd