Suguru SASAGAWA
Research on evaluation of redundancy in truss bridge
Eiji IWASAKI
In this research, evaluation for redundancy is considered under a main member of truss structure is broken, where redundancy means that bridge doesn't collapse when main member is broken. The object bridge is Tyousei bridge in Nagaoka City Niigata Prefecture. Tyousei bridge is modeled by the FEM.As for the breaking material assumed by the redundancy evaluation,
it thinks only about main member. The release forces when member is broken are applied in joint of broken member, judges whether to be of each member in the state of the safety.
The obtained result by the research is follows.
About Linear analysis
ˇ¦Result of redundancy evaluation is influenced by precision of the modeling of structure.
About Non-Linear analysis
ˇ¦The members became over strength when non-linear analysis are used. The result of redundancy evaluation by using the linear analysis is dangerous
Please use "previous botton" to return the previous page