摘要
进行了12根钢管混凝土柱(4根无脱空柱、8根带环向脱空缺陷柱)在压弯剪复合作用下的滞回性能试验,试验参数包括剪跨比和脱空率。通过试验考察带环向脱空缺陷的钢管混凝土柱在压弯剪复合作用下的破坏形态,并详细分析了脱空缺陷对试件滞回曲线、骨架曲线、刚度和耗能能力的影响。结果表明:剪跨比和脱空率对试件的受剪承载力、剪切刚度和耗能能力有较大的影响,随着剪跨比增大试件的剪切刚度减小;随着脱空率增加,试件的受剪承载力和耗能能力均降低。
Hysteretic performance tests of 12 concrete-filled steel tubular columns(4 specimens without gap and 8 specimens with circumferential gap) were carried out under combined compression-bending-shear loading. The test parameters are shear span ratio and gap ratio. The failure modes of concrete filled steel tubular column with circumferential gap under combined compression-bending-shear loading were investigated experimentally. The influence of gap on hysteretic curve, skeleton curve, stiffness and energy dissipation capacity of specimens was analyzed in detail. It is shown that the shear span ratio and gap ratio have great influence on the shear capacity, stiffness and energy dissipation capacity of the specimens, and the stiffness of specimens decreases with the increase of the shear span ratio. With the increase of gap ratio, the shear capacity and energy dissipation capacity of the specimens decrease.
作者
张建威
廖飞宇
张伟杰
ZHANG Jianwei;LIAO Feiyu;ZHANG Weijie(College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002,China)
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2019年第S01期251-256,共6页
Journal of Building Structures
基金
国家自然科学基金项目(51578154).
关键词
钢管混凝土柱
环向脱空缺陷
压弯剪复合作用
滞回性能
承载力
concrete-filled steel tubular column
circumferential gap
combined compression-bending-shear loading
cyclic behavior
bearing capacity
