A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

Applied Sciences

MohammadReza Sheidaii¹  Foad Kiakojouri²  ValerioDe Biagi²  Bernardino Chiaia² 

[1] Dept. of Civil Engineering, Urmia University, Urmia 5756151818, Iran;Dept. of Structural, Geotechnical and Building Engineering, Politecnico di Torino, 10129 Torino, Italy;

关键词: sudden damage;    column removal;    reinforced concrete;    simplified method;    frame structure;   

DOI  :  10.3390/app10093081

来源: DOAJ

【 摘 要 】

Column loss is a type of damage that can occur in frame structures subjected to explosions or impacts. The response of such structures largely depends on the capacity of the assembly of elements and on the inertia effects due to the sudden nature of the phenomenon. Frame structures are able to develop various resisting mechanisms that prevent the collapse to progress. The assessment of the robustness often requires complex and detailed numerical modelling. For the preliminary design of a robust frame, simplified methods to assess the effectiveness of the redistribution of the loads after the removal of a member are welcome. In the present paper, an approach based on the idealisation of the damaged structure into a single degree-of-freedom system with an elastic-plastic compliance law is proposed. The output of the method is the dynamic response of a target point, which can serve for assessing the residual safety of the structure. Comparing the obtained results with the outputs of a more sophisticated FE (Finite Elements) analysis, a satisfying accuracy is found.

【 授权许可】

Unknown