Reconstruction of dynamic wind forces on a transmission steel lattice tower using aeroelastic wind tunnel test data

•A framework of reconstructing dynamic wind forces on a steel lattice tower is developed.•A modified flexibility approach for stiffness matrix evaluation is applied on the reduced order model of a steel lattice tower.•KF-ARLSE is adopted to inverse the unknown input modal wind force.•The structural eigenfrequency and aerodynamic damping are determined in aeroelastic wind tunnel experiments.•Wind tunnel tests and numerical simulations demonstrate the verification of the proposed framework.