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发表时间：2022-10-09

发表刊物：东北大学学报 自然科学版

期号：10

页面范围：1505-1508

ISSN号：1005-3026

摘要：The RFPA3D(realistic failure process analysis) code is used to simulate the concrete-filled short rectangular steel tube columns. The whole process including loading, deformation, failure and crack initiation/propagation of the short column is numerically simulated. A certain statistical function is introduced into the numerical model to reflect the concrete heterogeneity. The elastic modulus and other mechanical properties are all weakened when the stress in elements satisfies the failure criterion. The progressive failure process of the column is brought to pass by way of increasing load to induce further displacement. The relationship between the ultimate load-carrying capacity and length of the steel tube are given with the change of cross-section area of concrete taken into account. The whole failure process of those samples is thus reproduced through RFPA3Dnumerical evaluation. The results indicated that RFPA3Dcan provide a new way to study the concrete-filled steel tube.

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