Parameter identification of rockfall protection barrier components through an inverse formulation

摘要: Abstract Rockfall barriers are key protection systems in mountainous regions worldwide. They designed to intercept and capture falling rocks. Most composed of flexible steel wire-nets connected wire-rope cables which turn attached posts anchored the ground. Additional energy dissipating devices can be enhance performance barriers. The composition geometrical arrangement wires forming net components a severe limitation realistic finite element (FE) modeling rockfall Detailed models computationally expensive. Therefore, macroscopic reflecting system behavior on coarser scale, i.e., global behavior, need derived. In this work, FE pertaining wire-ring spiral have been developed investigated. Material plasticity, damage initiation ductile taken into account. non-linear force displacement response obtained laboratory tests has successfully reproduced by introducing additional parameters. An inverse optimization process based multi-island genetic algorithm is used for determination model numerical approach succeeds barrier connections manner that more refined than previous attempts, yet low computational expense. accuracy verified match between simulation test results full scale prototype was tested according ETAG027 standard.