Wave Forces on Causeway-Type Coastal Bridges: Effects of Angle of Wave Incidence and Cross-Section Shape

摘要

Wave forces and moments were obtained for two different coastal bridge types as functions of wave height, water depth and angle of water incidence. 1:24 scale models of both bridges were used to determine forces and moments. One bridge model was a slab and beam type carrying four lanes of traffic along two structurally separated pairs of bridges adjacent to one another and with a common pile bent foundation. This model was of the Bay St. Louis, Mississippi bridge on U.S. Highway 90 which was heavily damaged by Hurricane Camille in 1969. The other bridge model was a trapezoidal box girder with 1:10 superelevation to seaward. Results are presented in the form of dimensionless design graphs which are suitable for use on any other geometrically similar bridges.