Robust impact design of steel and composite buildings Advances in the Residual Strength Method

摘要

Determination of the residual strength of an impacted steel member requires sufficient knowledge about the deformations caused by the impact. Within this paper, results of six vehicle impact tests on steel columns are presented. By varying the boundary conditions of the impacted member and the attached mass at the column head it was possible to study experimentally the influence of various types of interaction between the column and the surrounding structure. State of the art commercial software (LS-Dyna) was used to perform verification of the experimental tests with refined finite element models. In a second step, innovative analytical models were developed to determine the member behaviour under impact loading and the remaining bearing capacity in a simplified way, while taking the interaction with the surrounding structure into account.