| 退火对Y形矩形钢管节点滞回性能影响的研究 |
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| 引用本文： | 武振宇,张扬,姚永红,何小辉. 退火对Y形矩形钢管节点滞回性能影响的研究[J]. 土木工程学报, 2011, 0(9): 11-19 |
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| 作者姓名： | 武振宇 张扬 姚永红 何小辉 |
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| 作者单位： | 哈尔滨工业大学;中国建筑设计研究院; |
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| 基金项目： | 国家自然科学基金(50978076); 《钢结构设计规范》国家标准管理组资助(2010-09) |
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| 摘 要： | 为研究退火处理及几何参数对矩形管节点滞回性能的影响,对2组Y形矩形管-管节点及2组Y形纵向板-矩形管节点进行了拟静力试验。每组包含2个几何尺寸相同的试件,对其中一个进行去应力退火处理。将节点弦管底面中部固定,对支管施加轴向往复荷载。试验中裂缝在节点的弦管上表面出现,沿弦管与连接件(支管或节点板)的连接焊缝外围发展并穿透弦管壁,导致节点失效。节点的耗能机制为弦管上表面塑性变形。分析发现:退火导致节点的极限承载力减小,延性比、累积延性比、累积能量耗散比增大;随支弦管夹角增大,管-管节点极限承载力、累积延性比、累积能量耗散比减小;随节点板长度增加,板-管节点的极限承载力、累积延性比、累积能量耗散比增大。
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| 关 键 词： | 矩形钢管节点 矩形钢管管-管节点 纵向板-矩形钢管节点 退火 滞回性能 轴向往复荷载 |
Study on the influence of annealing treatment on the hysteretic behavior of Y-type RHS joints |
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| Wu Zhenyu Zhang Yang Yao Yonghong He Xiaohui. Study on the influence of annealing treatment on the hysteretic behavior of Y-type RHS joints[J]. China Civil Engineering Journal, 2011, 0(9): 11-19 |
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| Authors: | Wu Zhenyu Zhang Yang Yao Yonghong He Xiaohui |
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| Affiliation: | Wu Zhenyu1 Zhang Yang2 Yao Yonghong1 He Xiaohui1 (1.Harbin Institute of Technology,Harbin 150090,China,2.China Architecture Design & Research Group,Beijing 100044,China) |
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| Abstract: | In order to investigate the effects of annealing and geometrical parameters on the hysteretic properties of RHS(rectangular hollow section) joints,pseudo-static tests of two groups of Y-type RHS-to-RHS joints and two groups of Y-type longitudinal plate-to-RHS joints were carried out.Each group consists of two specimens with identical geometrical dimensions.One of the two specimens was annealed to relieve residual stress.The middle part of the lower surface of the chord was fixed and cyclic load was applied ... |
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| Keywords: | RHS joint RHS-to-RHS joint longitudinal plate-to-RHS joint annealing hysteretic behavior cyclic axial loading |
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