System Reliability Assessment Method for Temporary Structure in Bridge Construction Stage

Abstract:

Condition assessment method for temporary structure is established based on system reliability analysis method. Failure models of temporary structures are established by the combined method with finite element analysis and series parallel model. Values of resistances, loads, and human errors of temporary structure in construction stage are discussed, and reasonable reliability models are proposed. Effects of wind loads and human errors on the temporary structure are considered, and component level and system level reliability assessment are analyzed respectively. Finally, performance of a triangle traveler is analyzed with the system reliability method. Results show that, using system reliability analysis method for temporary assessment can not only solve the uncertainties of resistance and load well, but also ensure the whole structure to have the same reliability.

Key words:temporary structure in bridge construction; system reliability; series parallel model; failure models; human errors