Mechanical Analysis of 50m-span Cross-bridge

Combining the practice of offshore platform engineering,the static and dynamic analysis and seismic analysis of the reaction for the 50 m-span cross-bridge with finite element analysis software is done,the dynamic response of the components of under three load cases are summarized.The results show that the maximum stress is at the bottom chord bar under the condition of ultimate wind load,self weight and the live load.Because of the effect of the lateral bending vibration,the upper and bottom chord bar appears fluctuation and the bottom chord bar's stress fluctuation is more strong.