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NiTi合金球节点在抗震网架结构中的力学性能分析
引用本文:李雁,智友海,殷惠光,张连英,谢东.NiTi合金球节点在抗震网架结构中的力学性能分析[J].建筑技术,2012,43(10):899-902.
作者姓名:李雁  智友海  殷惠光  张连英  谢东
作者单位:1. 中国矿业大学,力学与建筑工程学院,221008,江苏徐州;徐州工程学院,土木工程学院,221008,江苏徐州
2. 徐州工程学院,土木工程学院,221008,江苏徐州
3. 中国矿业大学,力学与建筑工程学院,221008,江苏徐州
4. 国家网架及钢结构产品质量监督检验中心,221006,江苏徐州
基金项目:国家自然科学基金项目,住房和城乡建设部科技计划项目,江苏省高校自然科学研究计划项目
摘    要:NiTi形状记忆合金(简称SMA)的材料性能优越,但对其球节点球形式的应力、应变分布规律及承载力等方面的研究还是一片空白。该研究中,以唯象学模型为基础,选用双线性等向强化塑性模型,并使用等向强化屈服准则,分析了静荷载和地震波两种类型荷载,得出:(1)SMA材料球节点弹性变形大,可较好地缓解外荷载所带来的破坏影响;(2)SMA球节点具有良好的延展和韧性特性,是一种典型的延性结构体系;(3)SMA球节点可有效地抑制球节点结构在地震荷载下的响应。

关 键 词:网架结构  抗震  NiTi形状记忆合金  空心球节点  超弹性  延性结构  唯象学模型

ANALYSIS ON MECHANICAL PROPERTY OF NITI ALLOY SPHERIC NODE IN ASEISMIC GRID STRUCTURE
LI Yan , ZHI You-hai , YIN Hui-guang , ZHANG Lian-ying , XIE Dong.ANALYSIS ON MECHANICAL PROPERTY OF NITI ALLOY SPHERIC NODE IN ASEISMIC GRID STRUCTURE[J].Architecture Technology,2012,43(10):899-902.
Authors:LI Yan  ZHI You-hai  YIN Hui-guang  ZHANG Lian-ying  XIE Dong
Affiliation:3 (1.School of Mechanics and Civil Engineering,China University of Mining and Technology,221008,Xuzhou,Jiangsu,China; 2.Civil Engineering Department, Xuzhou Institute of Technology, 221008,Xuzhou,Jiangsu, China; 3.Product Quality Supervision and Inspection Center of National Grid and Steel Structure,221006,Xuzhou,Jiangsu,China)
Abstract:NiTi shape memory alloy (SMA) has superior material property, but no research has been made on stress, strain distribution law and bearing capacity of spheric node made of NiTi alloy. This research is based on the phenomenological model and uses bilinear isotropic reinforcing plastic model and isotropic reinforcing yield rule to analyze static load and seismic wave and the research results find that:(1) SMA spheric node has strong elastic deformation and could favorably alleviate the damage influence caused by external load; (2) SMA spheric node has favorable ductibility and tenacity, it is a typical ductile structure system; (3) SMA spheric node could effectively prevent the response of spheric node structure under earthquake load.
Keywords:grid structure  aseismic  NiTi shape memory alloy  hollow spheric node  superelasticity  ductilestructure  phenomenological model
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