| 方钢管混凝土柱滞回性能研究 |
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| 引用本文： | 李前,卫建军.方钢管混凝土柱滞回性能研究[J].西安科技大学学报,2012,32(1):76-80. |
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| 作者姓名： | 李前 卫建军 |
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| 作者单位： | 1. 陕西建安工程监理有限公司,陕西西安,710001
2. 西安科技大学建筑与土木工程学院,陕西西安,710054 |
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| 摘 要： | 以含钢率、长细比、材料强度等为主要参数,在确定钢材和核心混凝土在循环荷载作用下的应力-应变关系模型的基础上,利用有限元软件ANSYS,对方钢管混凝土柱在循环荷载作用下全过程进行了计算,以模拟地震作用下方钢管混凝土柱的实际受力性能。研究表明:方钢管混凝土柱荷载-位移滞回曲线呈比较饱满的"梭形",没有明显的捏缩现象,达到极限荷载后,仍表现出良好的延性和后期变形能力,能够满足实际工程中大跨度、重荷载的要求,是一种良好的结构形式。
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| 关 键 词： | 钢管混凝土 有限元 荷载-位移滞回曲线 刚度 |
Behavior of concrete-filled rectangular steel tubular columns under cyclical loading |
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| LI Qian
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WEI Jian-jun.Behavior of concrete-filled rectangular steel tubular columns under cyclical loading[J].JOurnal of XI’an University of Science and Technology,2012,32(1):76-80. |
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| Authors: | LI Qian WEI Jian-jun |
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| Institution: | 1.Shaanxi Jianan Construction Supervisor Co.,Ltd,Xi’an 710001,China;2.College of Civil and Architecture Engineering,Xi’an University of Science and Technology,Xi’an 710054,China) |
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| Abstract: | Considering the steel ratio,slenderness ratio,and the material strength as the main variable parameters,based on the determination of the stress-strain relation of the steel and core concrete under the cyclic loading,use the finite element software ANSYS to calculate the concrete-filled rectangular steel tubular columns under cyclic loading in the whole process,which simulates the mechanical properties of concrete-filled rectangular steel tubular columns in actual earthquake.Research shows that: the load versus displacement hysteretic curves of concrete-filled rectangular steel tubular columns was relatively full "spindle",without obvious pinch phenomenon.After the limit load,model structure still showed good ductility and post-deformation.The concrete-filled rectangular steel tubular columns can meet the requirements of the real projects with large span and heavy load. |
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| Keywords: | concrete-filled steel tubular finite element load versus displacement hysteretic curves rigidity degeneration |
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