Abstract
This study is to estimate statistically the life time of bridges and to analyse the reason of demolish and renewal. Data sources are the ledgers of bridge in Niigata prefecture, from which the numbers of remaining bridges and demolished ones were took out in order of newly built year. Total of remaining bridges are 4333 and demolished ones are 44 at 1986.Using terms of reliability theory, the “probability density function of failure” is supposed to follow a weibull distribution from graphic analysis, and by the presumed reliability function, the life expectancy of steel bridge are estimated at some 35 years and of reinforced concrete bridge are at some 54 years. Concerning reason of demolish, using information theory, the contributed ratio of information are calculated. Political or functional reason are superior to physical reason.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
