000020255 001__ 20255
000020255 005__ 20170118182405.0
000020255 04107 $$aeng
000020255 046__ $$k2017-01-09
000020255 100__ $$aNakashima, Masayoshi
000020255 24500 $$aExperimental Study on Cyclic Behaviors and Restoring Force Characteristics of Concrete Filled Steel Tube Columns Using Ultra-High Strength Steel

000020255 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020255 260__ $$b
000020255 506__ $$arestricted
000020255 520__ $$2eng$$aH-SA700 is a type of new ultra-high-strength structural steel that is more environmentally friendly and more suitable for mass production than conventional high-strength steel. The objective of this paper is to contribute to the practical application of CFT columns using such ultra-high-strength as a means to provide a significant increase in the seismic capacity of building structures. In this paper, the cyclic behavior of concrete filled steel tubes (CFTs) using H-SA700 was investigated experimentally. H-SA700 offers an approximately three time higher yield strain than that of conventional steel, and therefore, the CFT columns using H-SA700 reached their elastic limit when the infilled concrete sustained compressive strength, while the steel tube remained elastic at the moment. In such a case, it is unsafe to evaluate the strength by using the current design formula based on the superposed strength method. Due to the relatively low ductility of H-SA700, steel is not allowed to yield in the design of CFT columns. Nevertheless, the experimental results revealed that, comparing with CFT columns using conventional steel, the CFT columns using H-SA700 exhibited a substantially large capacity of plastic deformation, smaller axial deformation associated with local buckling, and a similar capacity of energy dissipation.

000020255 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020255 653__ $$aUltra-high Strength Steel, H-SA700, CFT Column, Restoring Force Characteristic, Design Formula

000020255 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020255 720__ $$aNakashima, Masayoshi$$iLuo, Yunbiao$$iNishi, Ryosuke$$iInamasu, Hiroyuki$$iHayashi, Kazuhiro
000020255 8560_ $$ffischerc@itam.cas.cz
000020255 8564_ $$s730420$$uhttps://invenio.itam.cas.cz/record/20255/files/84.pdf$$yOriginal version of the author's contribution as presented on USB, paper 84.
000020255 962__ $$r16048
000020255 980__ $$aPAPER