The Reasonable Finished Dead State Research of Partially Earth-Anchored Cable-Stayed Bridge

2014

AMR

Based on fuzzy decision theory, multi objective fuzzy optimization is done for three dynamic model scheme of self-anchored cable-stayed suspension bridge. Combining the fuzzy decision method with engineering practice and using two comparison theory solves the problem of quantifying the qualitative indexes. Comparison results show that it is more reasonable to place viscous dampers between main tower and girder, with longitudinal displacement on mid-span of girder on the same time. This method can provide a reference for structure selection in practical conceptual design phase.

Section: Dynamic Model Scheme Optimization Based On Fuzzy Decision Th...mentioning

confidence: 78%

Dynamic Model Scheme Optimization Based on Fuzzy Decision Theory of Self-Anchored Cable-Stayed Suspension Bridge

2014

AMR

“…1. According to the optimization results in reference [4], choosing the parameters of viscous damper, damping coefficient α=6000kN•s/m and velocity index v=0.4. Restoring force model of lead rubber bearing.…”

Section: The Establishment Of Finite Element Modelmentioning

confidence: 99%

Effect of LRB Position for Vibration Reduction System of Self-Anchored Cable-Stayed Suspension Bridge

2014

AMR

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. Engineering practice proved that the viscous damper has obviously damping effect for structure. For the vibration reduction system of self-anchored cable-stayed suspension bridge, whose main tower is set viscous damper. This essay does the nonlinear time history analysis under the longitudinal earthquake about the vibration reduction system that considering the LRB putted in different location. Compared with the damping system that only set viscous damper, analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control.

“…2. According to the optimization results in reference [5], choosing the parameters of viscous damper, damping coefficient α=6000kN•s/m and velocity index v=0. 4.…”

Section: The Establishment Of Finite Element Modelmentioning

confidence: 99%

Effect of Viscous Damper Position for Isolation System of Self-Anchored Cable-Stayed Suspension Bridge

2014

AMM

Larger displacement and inter-force response of the structure will be produced when self-anchored cable-stayed suspension bridge in longitudinal earthquake. For the isolation system of self-anchored cable-stayed suspension bridge, whose main tower is set the lead core rubber isolation bearing. This essay does the nonlinear time history analysis under the longitudinal earthquake about the isolation system when the viscous damper is put in different location. Analysis results show that inter-force and displacement of control section and control node are reduced greatly in hybrid vibration control. The result is obvious when the viscous damper is set both in the main tower, the side block and only in the main tower.