Chongqing Jiaotong University

Sichuan Road and Bridge East China Construction Co., Ltd

Sichuan Highway and Bridge Construction Group Co., Ltd

Zhengsong Xiang

Jianting Zhou

Chengjun Yan

Jinyang Li

Pengfei Wei

Zhongbo Tang

Wei Lu

Helu Yu

Yulong Guo

A method for probabilistic assessment of seismic resistance of long-span arch bridge based on time-frequency hybrid computation includes: S, parameter acquisition; S, modeling; S, model preprocessing; S, piecewise interpolation of a time-frequency modulation function; S, response expression derivation; and S, probabilistic assessment of seismic resistance. By integrating spectral decomposition technology, a modal superposition method, and piecewise interpolation technology for time-frequency modulation functions, an explicit response expression of a long-span arch bridge structure is derived under conditions of arbitrary time-frequency modulated seismic excitation, which greatly saves the computational cost of probabilistic analysis of the non-stationary seismic response of the large arch bridge structure, and achieves efficient probabilistic assessment of the seismic resistance of the arch bridge structure.

Method for probabilistic assessment of seismic resistance of long-span arch bridge based on time-frequency hybrid computation

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Chongqing, China

Zhengsong Xiang