| 引用本文: | 周中一,庞新龙,王涛,靳宇航,罗诒红.双层圆钢管混凝土长柱压扭滞回性能试验[J].哈尔滨工业大学学报,2024,56(1):117.DOI:10.11918/202302046 |
| ZHOU Zhongyi,PANG Xinlong,WANG Tao,JIN Yuhang,LUO Yihong.Test on hysteretic behavior of concrete-filled double-skin steel tubular long columns under compression torsion[J].Journal of Harbin Institute of Technology,2024,56(1):117.DOI:10.11918/202302046 |
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| 双层圆钢管混凝土长柱压扭滞回性能试验 |
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周中一1,2,庞新龙1,2,王涛1,2,靳宇航1,2,罗诒红1,2
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(1.中国地震局工程力学研究所,哈尔滨 150080; 2.中国地震局地震工程与工程振动重点试验室(中国地震局工程力学研究所),哈尔滨 150080)
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| 摘要: |
| 为研究双层圆钢管混凝土长柱在压、扭荷载作用下的力学性能,利用研制的Stewart六自由度加载平台,进行了两个普通圆钢管混凝土长柱和两个双层圆钢管混凝土长柱试件在纯扭、压扭作用下的低周往复试验。对比分析了各试件的承载力、扭转变形、耗能、滞回性能,进行了有限元参数分析。研究表明:普通圆钢管混凝土长柱和双层圆钢管混凝土长柱均具有较好的抗扭能力；与普通圆钢管混凝土长柱相比,双层圆钢管混凝土长柱的初始刚度和承载力略有提升,滞回曲线更饱满,耗能能力和延性大幅提升；参数分析表明含钢率一定时,内层钢管径厚比越大,对抗扭越有利；一定范围内的轴向荷载,可提高钢管混凝土柱的抗扭能力。 |
| 关键词: 钢管混凝土 纯扭 压扭 拟静力往复加载 Stewart平台 |
| DOI：10.11918/202302046 |
| 分类号:TU398 |
| 文献标识码:A |
| 基金项目:中国地震局工程力学研究所基本科研业务费专项资助项目(2020B05)；黑龙江省头雁行动计划(3016) |
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| Test on hysteretic behavior of concrete-filled double-skin steel tubular long columns under compression torsion |
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ZHOU Zhongyi1,2,PANG Xinlong1,2,WANG Tao1,2,JIN Yuhang1,2,LUO Yihong1,2
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(1.Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China; 2.Key lab of Earthquake Engineering and Engineering Vibration of China Earthquake Administration (lnstitute of Engineering Mechanics, China Earthquake Administration), Harbin 150080, China)
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| Abstract: |
| To study the mechanical performance of concrete-filled double-skin steel tubular long columns under compressive and torsional loads, two ordinary circular steel tube reinforced concrete columns and two double-layered steel tube reinforced concrete columns were subjected to low-cycle reciprocating tests under pure torsion and torsion-compression loading using a developed Stewart six-degree-of-freedom loading platform. Based on the tests, the bearing capacity, torsional deformation, energy dissipation, and hysteresis performance of each specimen were compared and analyzed, and finite element parameter analysis was conducted. The study shows that both ordinary circular steel tube reinforced concrete columns and double-layered circular steel tube reinforced concrete columns have good torsional resistance. Compared with ordinary circular steel tube reinforced concrete columns, the initial stiffness and bearing capacity of double-layered steel tube reinforced concrete columns are slightly improved, the hysteresis curve is more full, and the energy dissipation capacity and ductility are greatly improved. Parameter analysis shows that when the steel content is constant, the larger the thickness ratio of the inner steel tube, the more beneficial it is for torsional resistance; and within a certain range of axial loads, the torsional resistance of steel tube reinforced concrete columns can be improved. |
| Key words: CFST pure torsion compression torsion quasi-static cyclic loading tests Stewart platform |
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