Buffeting-induced structural internal force analysis for long-span cable-stayed bridges based on entire-bridge model;

A long-span cable-stayed bridge across the Yangzi River subjected to the spatial seismic excitation was analyzed,during which course the effects of geometric nonlinear,traveling wave and multip.

Based on the summary of the various wind-induced vibrations, by taking a bay bridge as an example, the long-span cable-stayed bridge deck’s vertical buffeting responses are studied.

Problems of geometric non-linear related to long-span cable-stayed bridge;

Verification of time-domain buffeting theory and analysis of influence factors for long-span cable-stayed bridges;

Seismic responses of long-span cable-stayed bridges under different patterns of earthquake excitations;

In order to find out the appropriate lateral seismic constraint system for super-long-span cable-stayed bridges,the seismic responses of super-long-span cable-stayed bridges with three lateral connection systems between side piers and girder were investigated,taking the Sutong Yangtze River Highway Bridge as studying object,and using the nonlinear time-history analysis method.

Due to the accumulation of errors during the cantilevel construction of super-long-span cable-stayed bridges,response under dead load may be stochastic and it can not be reflected by the traditional method of deterministic structural analysis.

In the paper,the mechanical characteristics of fluid viscous dampers are discussed firstly,and then the seismic response reduction of a super-long-span cable-stayed bridge by adding fluid viscous dampers is investigated.

The elastic-plastic hinge method for analysis of physical nonlinearity of long-span cable-stayed bridges is utilized including geometrical nonlinearity effects in this paper,and ultimate load capacity is also studied when considering several parameters.

A procedure analyzing geometrical nonlinearity of long-span cable-stayed bridges is proposed considering geometric nonlinear effects based on structural nonlinear finite element equilibrium equation using U.