全焊刚接仿古建筑双梁柱节点抗震性能试验研究及有限元分析

发布时间：2018-06-21 15:53

本文选题：仿古建筑 + 钢结构　；参考：《西安建筑科技大学》2014年硕士论文

【摘要】：除了对中国古建筑文化遗产进行保护和继承外，如何传承与创造出具有中华民族风格与地域特色的仿古建筑，，对目前我国城市发展与建设具有重要意义。当前，我国的很多地区和城市都新建了大量的仿古建筑，这些由不同材料、不同结构形式制成的仿古建筑与古建筑、现代建筑在受力机理上均有很大的不同。仿古建筑中的阑额、由额与柱形成了双梁柱节点，其节点形式不同于一般节点，对双梁柱节点在地震作用下的表现认识很少。本文研究仿古建筑双梁柱节点的抗震性能，依据西安某景区的工程实例，设计了2个仿古建筑双梁柱中节点和2个仿古建筑双梁柱边节点，并进行了低周反复加载试验、有限元验证及参数分析。试验研究了不同轴压比、不同节点形式对全焊刚接仿古建筑双梁柱节点的抗震性能影响。得到了节点核心区应变、柱端转角、梁端转角和柱端位移、柱顶荷载-位移滞回曲线、骨架曲线。分析了各个试件的破坏形态和变形特点；对比研究不同轴压比、不同节点形式对全焊刚接仿古建筑双梁柱节点的屈服荷载、极限荷载、初始刚度、耗能性能等抗震性能指标的影响，并提出了合理的设计建议。通过有限元分析软件ABAQUS相应的接触关系建立精细化全焊刚接仿古建筑双梁柱节点的有限元模型，并与试验研究结果所得的柱端力-位移骨架曲线和破坏模式进行对比，验证模型的正确性。在此模型的基础上，分析了不同参数对结构的抗震性能影响。有限元分析结果表明精细化模型用于模拟全焊刚接仿古建筑双梁柱节点是合理可靠的。通过有限元分析得到的结果，可为全焊刚接仿古建筑双梁柱节点抗震性能评估和理论分析提供参考依据。
[Abstract]:In addition to protecting and inheriting the cultural heritage of Chinese ancient architecture, how to inherit and create ancient architecture with Chinese style and regional characteristics is of great significance to the development and construction of Chinese cities at present. At present, many areas and cities in our country have built a large number of antiquated buildings, which are made of different materials and different structures, and modern buildings are very different in force mechanism. In ancient buildings, double Liang Zhu nodes are formed by the bar and column. The joint form is different from that of common nodes, and little is known about the performance of double Liang Zhu joints under seismic action. In this paper, the aseismic performance of double Liang Zhu joints in ancient buildings is studied. Based on an engineering example of a scenic spot in Xi'an, the joints of two Liang Zhu joints and two Liang Zhu side joints of two ancient buildings are designed, and the low cycle repeated loading tests are carried out. Finite element verification and parameter analysis. The effects of different axial compression ratios and different joint types on the seismic behavior of the double Liang Zhu joints of fully welded rigid-jointed buildings are studied. The core strain, column end angle, beam end angle, column end displacement, column top load-displacement hysteretic curve and skeleton curve are obtained. The failure modes and deformation characteristics of each specimen are analyzed, and the yield load, ultimate load, initial stiffness of the two Liang Zhu joints of the fully welded rigid-jointed building with different axial compression ratios and different joint forms are compared. The influence of seismic performance index, such as energy dissipation performance, is put forward, and some reasonable design suggestions are put forward. Through the contact relation of Abaqus software, the finite element model of the double Liang Zhu joints in the rigid-jointed building is established, and the results are compared with the column end force displacement skeleton curve and failure mode. Verify the correctness of the model. On the basis of the model, the influence of different parameters on the seismic performance of the structure is analyzed. The results of finite element analysis show that it is reasonable and reliable to use the refined model to simulate the double Liang Zhu joints of fully welded rigid-jointed antiquated buildings. The results obtained by finite element analysis can provide a reference for the seismic performance evaluation and theoretical analysis of double-joint Liang Zhu joints in fully welded rigid-jointed buildings.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU391;TU352.11

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