SEISMIC DESIGN OF THE BRIDGE OVER THE CHACAO CHANNEL INCHILE

摘要

This paper discusses selection of the optimal structural system for the proposed bridge, giving dueconsideration to strong seismic demand. At the same time, importance was given to the other loadsoriginating from wind, current and vehicle loading. It is often found that the optimal structural system fora particular load case opposes that of another load case. The finally adopted bridge concept was a twomain-span continuous suspension bridge supporting the future 4-lane road connection.The paper is also concerned with the implications of the seismic demand, in terms of special design ofspecific structural members. It was observed that seismic loading had impact on the pylons andfoundations whereas it had only minor impact on the bridge deck and cable structures.