Metal Foam-Filled Tubes as Plastic Dissipaters in Earthquake-Resistant Steel Buildings

7th International Conference on Advanced Materials and Structures

Ghiani, C.^1 ; Linul, E.^2 ; Porcu, M.C.^1 ; Marsavina, L.^2 ; Movahedi, N.^3 ; Aymerich, F.^1

Department of Mechanical, Chemical and Materials Engineering, University of Cagliari, via Marengo 2, Cagliari, Italy^1

Department of Mechanics and Strength of Materials, Politechnica University of Timisoara, 1 Mihai Viteazu Avenue, Timisoara

300 222, Romania^2

Independent Researcher (Graduated from Semnan University), Isfahan, Iran^3

关键词: Buckingham-pi theorem;    Civil structure;    Earthquake resistant;    Experimental test;    Foam filled tube;    Preliminary assessment;    Steel buildings;    Strong earthquakes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/416/1/012051/pdf
DOI  :  10.1088/1757-899X/416/1/012051

来源: IOP

【 摘 要 】

The aim of this paper is to investigate whether metal-foam-made devices can be effective to dissipate seismic energy in buildings during strong earthquakes. To this purpose, non-linear numerical analyses of concentrically braced steel buildings under recorded ground motions have been carried out, while some experimental tests on metal-foam specimens and metal-foam-filled tubes have been performed. Foam-based devices are assumed to be inserted within the diagonal braces of the considered steel frame to dissipate energy by plastic deformation during strong earthquakes. To apply the experimental data, a scaled numerical model of the prototype building has been implemented by means of the similitude theory and the Buckingham Π theorem. The results of the study provide a preliminary assessment of the potential of metal foam-based dissipaters to reduce the seismic effects in civil structures.