Application research of lead rubber isolation bearing and viscous damper in high-position connected structure
Two towers of a project were connected to a twin-tower connected structure by a high-position steel corridor.The project adopts the flexible connection scheme of lead rubber isolation bearing and viscous damper.The design points of flexible connection scheme were described in detail,and the overall calculation model of high-position connected structure considering the interaction between the steel corridor and twin tower was established.The YJK software was used to calculate and analyze the high-position connected structure under wind load and normal earthquakes,and the SAUSAGE analysis software was used to analyze the elastic-plastic time history analysis under the rare earthquake,the nonlinear seismic response for the lead rubber isolation bearing and viscous damper was studied.The analysis results indicate that the lead rubber isolation bearings are in elastic working state under the wind load and normal earthquakes.Under the action of rare earthquake,the lead rubber isolation bearing produces yield deformation and dissipates energy,and the maximum shear deformation values is within the allowable range of the specification,The hysteresis curve of the viscous damper is full and the output is obvious.In addition,the flexible connection scheme weakens the influence of the high-position steel corridor on the main structure.The independent design of each tower and the adoption of local strengthening measures can meet the actual engineering requirements,and reduce the difficulty of the main structure design.
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