Multi-dimensional seismic control of cylindrical TLD considering vortex effect

Tuned liquid damper(TLD) can reduce dynamic amplitudes of a structure under earthquake.The seismic control of horizontal and torsional response of a structure with cylindrical TLDs was studied.The hydraulic pressure model of the cylindrical TLD including pulse pressure and convection pressure was established with the membrane analog method.The torsional model of the cylindrical TLD was obtained based on the quasi-uniform vortex theorem.The equation of motion for the control system considering eccentric torsion effect was derived and the solving method was presented.A 10-story eccentric structure with TLDs was analyzed to verify the control performance of TLDs for the horizontal and torsional coupled system under earthquake.The effect of pulse pressure,convection pressure and vortex torsional force was analyzed.The results showed that the coupled response can be reduced effectively and the vortex torsional force can not be ignored.