Design method of prefabricated concrete retaining wall structure based on strut-and-tie model
A design method for a prefabricated retaining wall structure based on the strut-and-tie model was proposed to investigate the structural force mechanism under the combined influence of water and soil pres-sures.The main stress skeleton obtained from numerical simulation was topologically optimized using Tosca software by taking the volume and strain energy as the optimization objectives.A tension and compression bar model was built.With the damage mechanism of the box retaining wall structure,the bearing capacity formula of three primary modes of structural damage,including the side wall compression damage mode,the water-facing retaining wall damage mode,and the cluster-connected tensile damage mode,were derived.Compara-tive analysis within practical engineering contexts indicates that after 900 iterations of model optimization,the optimized configuration and strain energy almost remain consistent.The load carrying capacity of the prefabri-cated concrete box retaining wall structure based on the strut-and-tie model is lower than those of the code and the finite element simulation,but the errors are within the range of 16％,thereby validating the method's rationality.
prefabricated concrete box retaining wall structureforce mechanismnumerical simulationto-pology optimizationstrut-and-tie model
万方数据
维普
