端板螺栓连接半刚性钢框架的抗震性能研究

发布时间：2018-03-18 22:46

本文选题：空间钢框架　切入点：端板螺栓连接　出处：《华南理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：对于外伸端板螺栓连接节点的研究，无论在理论方面还是试验方面，国内外都取得了不少成果，但对于具有此类半刚性节点形式的钢框架，其是空间钢框架的整体性能研究甚少。从目前国内外取得的成果来看，半刚性钢框架在弱轴方向的研究十分缺乏，同时强轴方向的研究也并不完善。本文针对端板连接节点形式，设计了两个单层单跨缩尺钢框架和一个双层单跨缩尺钢框架，对其分别进行强轴方向和弱轴方向的低周往复加载试验和有限元抗震性能分析，主要研究包括以下几个方面：（1）通过对三个端板连接钢框架试件进行低周往复加载试验，分析了此类钢框架的抗震性能，包括延性分析、滞回性能分析、塑性铰机制、破坏形式等。（2）利用大型通用有限元软件ABAQUS微观实体建模分析各框架试件，对各框架进行单调推覆加载仿真计算，，对比试验骨架曲线、应力应变分布以及破坏形态等，理论结果与试验结果得以相互印证。（3）利用有限元软件SAP2000平台，使用宏观框架单元和节点弹簧单元模拟多高层半刚性空间钢框架，并进行静力弹塑性分析，得出节点刚度变化对多高层空间钢框架整体抗震性能的影响。本文的研究成果为端板螺栓连接形式的半刚性空间钢框架的抗震设计提供了试验依据和理论基础，对实际工程的设计和应用具有重要的意义。
[Abstract]:Many achievements have been made in the research of bolted joint of outstretched end-plate, both in theory and in experiment, but for the steel frame with this kind of semi-rigid joint, There is little research on the whole performance of space steel frame. From the results obtained at home and abroad, the research on the weak axis direction of semi-rigid steel frame is very scarce. At the same time, the research on the direction of the strong axis is not perfect. In this paper, two single-story single-span steel frames and one double-layer single-span steel frame are designed for the end-plate connection joint. The low cycle reciprocating loading test and finite element seismic performance analysis are carried out in the direction of strong axis and weak axis respectively. The main research includes the following aspects:. 1) the seismic behavior of three steel frames connected with end plate is analyzed by low-cycle reciprocating loading test, including ductility analysis, hysteretic performance analysis, plastic hinge mechanism, failure form and so on. (2) using the large-scale general finite element software ABAQUS to model and analyze each frame specimen, the monotone nappe loading simulation calculation of each frame is carried out, and the experimental skeleton curve, stress and strain distribution and failure pattern are compared, and so on. The theoretical results and the experimental results are verified by each other. Using the finite element software SAP2000 platform, the macro frame element and the node spring element are used to simulate the multi-storey semi-rigid space steel frame, and the static elastic-plastic analysis is carried out. The effect of joint stiffness change on seismic behavior of steel frame with multi-storey space is obtained. The research results of this paper provide the experimental basis and theoretical basis for the seismic design of semi-rigid space steel frame with end-plate bolt connection, which is of great significance to the design and application of practical engineering.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU391;TU352.11

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