钢结构住宅半刚性梁柱节点滞回性能研究-结构工程专业论文.docxVIP

摘要钢结构住宅具有抗震性能好、施工速度快、可循环利用等优点，大力发展钢结构住 摘要 钢结构住宅具有抗震性能好、施工速度快、可循环利用等优点，大力发展钢结构住 宅符合住宅产业化和可持续发展的要求。钢结构住宅抗震性能良好，但在地震作用下仍 有节点破坏导致整个结构倒塌的事件发生，主要原因是人们尚没有完全了解钢结构住宅 梁柱节点在地震作用下的破坏机理，相应的抗震设计准则和技术措施还不能完全防止震 害。半刚性梁柱节点具有安装简单、受力性能好、现场安装无需施焊等优点，被广泛应 用在钢结构住宅中，分析和研究半刚性梁柱节点在单向加载和循环加载作用下的受力性 能及破坏机理具有重要的理论和工程意义。 本文在考虑材料、几何和状态非线性的基础上，对钢结构住宅常用的端板连接和T 型钢连接采用ANSYS软件建立有限元模型，研究了它们的单向加载坛．口曲线以及循环 加载作用下的滞回曲线，并对节点初始转动刚度、极限承载力、滞回性能及破坏模式等 进行了讨论，系统分析了螺栓直径、螺栓级别、预拉力、端板厚度、端板宽度、端板加 劲肋、T型钢尺寸、材料材质、连接抗滑移系数等参数对半刚性梁柱连接节点滞回性能 的影响。最后，在非线性有限元分析结果的基础上，给出了两种半刚性梁柱节点适宜的 构造参数，提出了对端板连接和T型钢连接的抗震设计对策和建议。 关键词：半刚性节点，端板连接，T型钢连接，滞回性能，抗震设计 Hysteretic Hysteretic Behavior Study on Semi·-Rigid Beam-·Column Joints in Steel Residence Fang Zhigang(Structural Engineering) Directed by Prof．Gao Fuju Abstract The steel residence has the advantages of good seismic performance，fast construction and ability of being recycled，ere．，so making great efforts to develop the steel residence meets the requirements of residential industrialization and sustainable development．The steel residence has good seismic performance，but accidents that joints damage caused the structure collapse still occurred under earthquake force．The main reason is that people still haven’t understood clearly the failure mechanism of beam-column joints，corresponding criteria of seismic design and technical measures Can not completely prevent damage．Semi-rigid beam- column joints has the advantages of simple installation,good mechanical performance，on-site installation without welding，etc．，which is widely used in steel residence．Analysis and research on the mechanical performance and failure mechanism of semi··rigid beam··column joints under single direction load and cyclic load has important theoretical and engineering significance． In this paper，based on the consideration of material，geometry and state three combined nonlinearity，finite element mode of end—plate connection and T-steel connection，which ale commonly used in steel residence，were established by ANSYS pro