5Hwang J.S.,Chang K.C.and Tsai M.H..Composite Damping Ratio of Seismically Isolated Regular Bridges[J].Engineering Structures,Elsevier Science Ltd,1997,55-62.
6Kelly.J.M.Earthquake Resistant Design With Rubber.Second Edition[Z].SpringerOVerlag London Limited,1997.
7Hwang J S,Sheng L H,Gates J H.Practical Analysis of Bridges on Isolation Beatings with Bi-Linear Hysteresis Characteristics[J].Earthquake Spectra,1994,10(4):705.
8Manuel Jara,Joan R.Casasb.A direct displacementbased method for the seismic design of bridges on bi-linear isolation devices[J].Engineering Structures,Elsevier Science Ltd,2006.869-879.