摘要
完成了6个SRC-RC竖向混合结构过渡层柱试件和1个钢筋混凝土柱对比试件的低周反复荷载试验,对其转换性能进行了研究.型钢在过渡层柱中局部存在的特点导致了较为严重的剪切破坏,临界斜裂缝贯通柱上部整个钢筋混凝土部分,剪切斜裂缝的张开与闭合导致滞回曲线"捏拢"现象明显,同级位移的三个循环中刚度退化严重.过渡层柱的延性受到型钢配钢率、配箍率、轴压比的影响.除试件SRC4-2-N外,其余试件的延性均达到μ≥3的抗震要求,介于3.39与5.99之间.在相同轴压比作用下,过渡层柱表现出较钢筋混凝土柱更好的变形能力,延性性能介于钢筋混凝土柱与型钢混凝土柱之间.
Seismic behavior of transfer column in SRC-RC hybrid structure is researched based on the low cyclic reversed loading test of 7 specimens including 6 transfer columns and 1 reinforced concrete column.Specimens suffer serious shear failure and the shear cracks run through the whole part of reinforced concrete due to the partially elongation of shape steel in transfer column.The opening and closing of shear cracks engender the pinch effect,and the rigidity degenerates rapidly.The ductility of transfer column is effected by parameters like ratio of shape steel area to cross section area,ratio of stirrup to concrete volume and axial ratio.Ductility of all specimens ranges from 3.39 to 5.99 and satisfies the earthquake resistance requirement μ≥3,except specimen SRC4-2-N.The transfer columns can perform much better deformation ability than reinforced concrete columns and share similar ductility capability with steel reinforced concrete.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2010年第3期377-381,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(50978217)
教育部高等学校博士学科点专项科研基金资助项目(20096120110005)
陕西省教育厅自然科学专项基金资助项目(09JK551)
关键词
型钢混凝土
钢筋混凝土
混合结构
过渡层
柱
延性
steel reinforced concrete
reinforced concrete
hybrid structure
transfer story
column
ductility
