预应力钢带加固钢筋混凝土短柱抗震性能试验研究  

EXPERIMENTAL STUDY OF SEISMIC PERFORMANCE OF RC SHORT COLUMN RETROFITTED BY PRESTRESSED STEEL STRIP

作　　者：杨勇[1] 魏渊峰[1] 赵勇[1] 刘义 尹波松 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]陕西省建筑科学研究院,西安710082

出　　处：《工业建筑》2015年第3期6-10,53,共6页Industrial Construction

基　　金：陕西省教育厅产业化项目(14JF014);西安市工业应用技术研发项目(CXY1432(5));西安市碑林区科技计划项目(GX1113);陕西省科技计划项目(2011kjxx42);陕西省重点科技创新团队计划(2014kct-31)

摘　　要：为研究预应力钢带加固钢筋混凝土短柱的抗震性能,对6个预应力钢带加固钢筋混凝土短柱试件和3个对比试件进行低周反复荷载试验。结合试验研究结果,分析预应力钢带加固柱的破坏形态、滞回曲线、位移延性系数、骨架曲线、耗能性能和刚度退化;研究轴压比、剪跨比、钢带间距对加固试件抗震性能的影响。试验结果表明,采用预应力钢带加固钢筋混凝土短柱可以明显改善其延性、变形能力和耗能性能,并且能显著提高短柱的抗剪承载力,抗震性能得到显著提高和改善。In order to investigate the seismic performance of reinforced concrete short column retrofitted by prestressed steel strip ( abbreviated to PSRC column) , low-cyclic reversed loading tests of six PSRC column specimens and three comparison specimens were conducted, in which the columns were vertically loaded and horizontally cycle-loaded. During the tests, the final failure patterns, hysteresis curves, displacement ductility coefficient, skeleton curves, energy consumption values and stiffness degradation of these PSRC column specimens were fully analyzed.And the influences of the key parameters such as axial compression ratio, shear span ratio and steel strip space on the seismic behavior of the strengthened specimens were studied.From the experimental results, it was shown that the ductility, shear carrying capacity, and energy dissipation were improved obviously, and it was verified that seismic performance of PSRC column had been successfully improved by the prestressed steel strips, this new retrofitted method was effective and reliability.

关 键 词：预应力钢带 加固 钢筋混凝土短柱 抗震性能 拟静力试验 

分 类 号：TU352.11[建筑科学—结构工程] TU375.3