criterion based on the displacement responses were proposed and verified in the experimental investigation. The mechanism of internal force redistribution and the subsequent failure process of two kinds of latticed domes were revealed by ALP (please put in full) analysis. The progressive collapse resistance of single-layer latticed domes could be predicted effectively by use of the importance coefficient αjs, the sensitivity index Rij and the stiffness reduction rate C as proposed in this paper, which are based on the member stress, the maximum displacement and the structural stiffness of the damaged structure, respectively. Both the Kiewitt-lamella dome and the Geodesic dome underwent a collapse in the experimental investigation. The collapse of the dome was induced by the unexpected local instability around the initial failure members, a local internal force redistribution was also detected before the overall collapse.The collapse of the Geodesic dome resulted from the rapid change in nodal displacement and the sharp decline of the structural stiffness. The elastic limit displacement of the damaged structure acquired by an buckling analysis was determined as the critical displacement for progressive collapse of single-layer latticed domes, which will varies with the initial failure member and the node for calculation. Acknowledgements This work was supported by the National Key Research and Development Program of
criterion based on the displacement responses were proposed and verified in the experimental investigation. The mechanism of internal force redistribution and the subsequent failure process of two kinds of latticed domes were revealed by ALP (please put in full) analysis. The progressive collapse resistance of single-layer latticed domes could be predicted effectively by use of the importance coefficient αjs, the sensitivity index Rij and the stiffness reduction rate C as proposed in this paper, which are based on the member stress, the maximum displacement and the structural stiffness of the damaged structure, respectively. Both the Kiewitt-lamella dome and the Geodesic dome underwent a collapse in the experimental investigation. The collapse of the dome was induced by the unexpected local instability around the initial failure members, a local internal force redistribution was also detected before the overall collapse.The collapse of the Geodesic dome resulted from the rapid change in nodal displacement and the sharp decline of the structural stiffness. The elastic limit displacement of the damaged structure acquired by an buckling analysis was determined as the critical displacement for progressive collapse of single-layer latticed domes, which will varies with the initial failure member and the node for calculation. Acknowledgements This work was supported by the National Key Research and Development Program of
Experimental%20Study%20and%20Numerical%20Simulation%20GARP.docx