THE EFFECT OF SUCTION ON THE FOUNDATIONS OF SUPER LONG SPAN BRIDGES DURING AN EARTHQUAKE

A rational method for the design of deep-water foundations of super long span bridges is desired. Attention is paid to the suction acting on the foundation bottom, which resist the rise of an under-water foundation during an earthquake. The results of a laboratory model experiment conducted in order to grasp the characteristics of suction are presented, and a rational seismic design method considering the efiect of suction is proposed.