工程科学与技术2017，Vol.49Issue(3)：76-84,9.DOI:10.15961/j.jsuese.201601210
摩擦耗能部分自复位连接组合框架边节点抗震性能试验研究
Experimental Investigation on Seismic Performance of Exterior Joint with Partial Self-centering Friction Damped Connection in Composite Frame
摘要
Abstract
To further investigate the seismic performance of the exterior joint with partial self-centering friction damped connection in innovative PEC column-steel beam composite frame,axial compression of PEC column and its layout was taken into consideration to design three 1:1.6 scale specimens and then tests were conducted under quasi-static cyclic lateral loading.Based on test measurements and observation,the specimens' seismic performances were studied,including the load-carrying capacity,bending stiffness degradation,residual drift angle,hysteretic energy-dissipation and load-carrying mechanism of joint.The results showed that post-tensioned bars provided restoring force to realize self-centering function and friction energy-dissipation plates can provide energy dissipation capacity to reduce the structural earthquake response.Axial compression of PEC column increased the initial bending stiffness but its second effect accelerated the energy-dissipation developing process,while the layout of PEC column had little effect on initial flexural stiffness and developing process of flexural stiffness degradation and energy-dissipation.The specimen SMJ-2 exhibited superior self-centering function as its residual drift angle was less than 0.005 rad when test end with the loading drift 3.18％,the specimen SMJ-3 owned sound selfcentering function as its residual drift angle was less than 0.005 rad when the loading drift approximately equaled to the inter-story drift limit (1/50) at design based earthquake level and 0.01 rad when the loading drift surpassed the inter-story drift limit (1/30) at maximum considered earthquake level,while the residual drift angle of specimen SMJ-1 was less than 0.01 rad when loading to the inter-story drift limit (1/50) at design based earthquake level,but it was increased with the second-effect of axial compression of PEC column,which led to the decay of its self-centering function.关键词
摩擦耗能部分自复位连接/PEC柱组合框架边节点/自复位功效/耗能能力/拟静力试验/抗震性能Key words
partial self-centering friction damped connection/exterior joint in composite frame/self-centering function/energy-dissipation capacity/quasi-static cyclic lateral loading tests/seismic performance分类
建筑与水利引用本文复制引用
方有珍,马雪玉,耿苏齐,金晶,汪逸萍..摩擦耗能部分自复位连接组合框架边节点抗震性能试验研究[J].工程科学与技术,2017,49(3):76-84,9.基金项目
国家自然科学基金资助项目(51078247 （）
51478286) （）
江苏省“青蓝工程”中青年学术带头人资助项目(2014) （2014）
江苏省“六大人才高峰”高层次人才计划资助项目(2016) （2016）
