Enhancing the Structural Longevity of the Bridges with Insufficient Seismic Capacity by Retrofitting
Y.C. Sung1, D.W. Chang2, M.Y. Cheng2, T.L. Chang2, K.Y. Liu3
Structural Longevity, Vol.1, No.1, pp. 1-16, 2009, DOI:10.3970/sl.2009.001.001
Abstract The seismic assessment and retrofit of existing bridges has become
important in Taiwan, since the Chi-Chi earthquake in 1999. In order to ensure the
safety of the traffic network, a project has been launched to assess the seismic resistance capacity of over 2,200 bridges on the Taiwan Roadway System. A detailed
evaluation procedure, using the modified ATC-40 capacity spectrum method was
first applied to over 140 regular bridges. The state-of-the-art nonlinear static analysis (pushover analysis) was adopted to calculate the seismic resistance capacity
in terms of PGA, in order to compare the seismic demand according to the code
requirement. A… More >