- 摘 要
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(1 內(nèi)蒙古科技大學(xué)建筑與土木工程學(xué)院，包頭 014010；2 包鋼(集團)公司設(shè)計研究院，包頭 014010)
［摘要］以軸壓比、含鋼率和長細(xì)比為參數(shù)，進行了8根方鋼管高強混凝土柱的低周反復(fù)荷載試驗，研究分析了該類構(gòu)件的滯回曲線、延性、剛度退化、耗能能力、破壞機理和破壞特征；并與型鋼高強混凝土柱的受力性能進行了比較分析。研究表明，方鋼管高強混凝土柱在施工、受力等方面都有較大的優(yōu)越性，有進一步研究和推廣應(yīng)用的價值。
［關(guān)鍵詞］方鋼管高強混凝土柱；力學(xué)性能；延性；耗能能力
Mechanical behavior analyses of high strength concrete-filled square steel tube columns under the low cyclic load
Gao Chunyan1, Li Bin1, Liu Zhifeng2(1 Architectural Engineering Institute, Inner Mongolia Scientific and Technical University, Baotou 014010, China；2 Design and Research Institute of
Abstract:Through the low cyclic load test of eight high strength concrete-filled square steel tubular columns, considering the effect of the axial compression ratio, steel ratio and slenderness ratio, the hysteretic curve, ductility, degradation of stiffness, energy dissipation capacity, failure mechanism and characteristics of the specimens were researched. The comparison analyses were carried on between the high strength concrete-filled square steel tubular columns and steel reinforced high-strength concrete columns. The study indicates that high strength concrete-filled square steel tubular columns have larger superiority in construction and mechanics aspects, and have the value of further research and popularization and application.
Keywords:high strength concrete-filled square steel tubular column; mechanical behavior; ductility; energy dissipation capacity
*內(nèi)蒙古自然科學(xué)基金資助(200711020701)
