Study on Nonlinear Lateral Parameter Bifurcation Characteristic of Soft Footbridge
With the trend of large span in the development of footbridge,its nonlinear characteristic is more and more obvious.Bifurcation has a great influence on the nonstationary trivial solution and its boundary stability of nonlinear vibration.Based on the Millennium Bridge in London,this paper deduces its nonlinear transverse vibration equation.Also,the method of Galerkin and multi-scale method is used to obtain the judgment condition of nonstationary trivial stability.Based on the bifurcation theory,the influence of nonlinear behavior on nontrivial solution as well as its stability is studied in the paper under two situations,1 a ? ? bifurcation and 1 2 a ? ? bifurcation of parameter plane respectively.
Zhou Chen De-Yuan Deng Quan-Sheng Yan Jin-Zhong Lu Jian-Xin Lu
Foshan University,School of Transportation and Civil Engineering & Architecture,Foshan 528000 China Construction Steel Structure Corp.Led,Guangdong Guangzhou 510000 School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640
国际会议
上海
英文
1-8
2017-12-28（万方平台首次上网日期，不代表论文的发表时间）