空间网格结构铸钢节点抗震性能研究

发布时间：2018-01-06 02:12

本文关键词：空间网格结构铸钢节点抗震性能研究　出处：《西安建筑科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：伴随我国经济的发展和科学技术水平的进步，人们开始追求更大的空间。随着结构形式日益复杂，这就对建筑物受力最为复杂的节点提出了更高的要求。铸钢节点以其节点刚度大、承载力高、疲劳性能、耐腐蚀性能、抗震性能较好等优点，已成为近年来应用较为广泛的新型节点形式之一，越来越受到工程师的青睐。我国是地震高发的国家，近年来由于地震频发，暴露出各类建筑对于抗震设计的种种不足，给人们的生命财产安全造成无法估量的损失，所以对于地震作用下建筑物抗震能力的研究刻不容缓。本文利用ANSYS有限元软件对焊接连接的半刚性铸钢节点进行了三维有限元模拟，为空间网格结构铸钢节点抗震性能研究奠定理论基础。本文首先对铸钢节点在国内外的应用以及发展现状进行论述；对国内外现有铸钢节点抗震性能研究现状进行分析，指出目前研究的不足；并对空间网格结构铸钢节点抗震性能进行研究。其次，采用ANSYS有限元软件分析了铸钢件连接节点的静力性能和滞回性能，，总结了铸钢件厚度、铸钢管件交汇处倒角半径、变厚度焊接处的斜角坡度等各参数变化对铸钢节点焊接连接半刚性的影响规律。最后，采用SAP2000软件，对空间网格结构在铰接、刚接和半刚性连接的不同连接方式下结构抗震性能进行探索性研究，对比分析彼此的不同动力性能。分析结果对于空间网格结构抗震性能设计具有指导意义。
[Abstract]:With the development of China's economy and the improvement of science and technology, people began to pursue more space. With the increasingly complex structure, the building force put forward higher requirements for the most complex nodes. The nodes in cast steel joint stiffness, high bearing capacity, fatigue resistance, corrosion resistance good seismic performance, etc., has become one of the new joint form is widely used in recent years, more and more engineers of all ages. China is earthquake prone countries in recent years, due to frequent earthquakes, exposed the shortcomings of all kinds of buildings for seismic design, causing immeasurable loss to people's life and property safety. So the research of seismic capacity of buildings under earthquake is urgent. This paper on welding of semi-rigid connections steel were numerically simulated using ANSYS finite element software for space The theoretical foundation of the study of the seismic performance of steel cast steel joints in grid structure is laid.
Firstly, the application and development status of cast steel joints at home and abroad are discussed. The present research status of seismic performance of cast steel joints at home and abroad is analyzed, and the shortcomings of current research are pointed out. The seismic performance of cast steel joints with space grid structure is also studied.
Secondly, analysis of cast steel joints static and hysteretic performance by using ANSYS finite element software. The thickness of steel castings is summarized, cast steel pipe fitting interchange chamfer radius, the variation of each parameter at the angle of slope of semi-rigid connection influence on cast steel joint welding ring welding thickness. The law
Finally, using SAP2000 software, the space grid structure in articulated, explores the structural seismic performance of different connection rigid and semi-rigid connections, the comparative analysis of different dynamic performance of each other. The results have guiding significance for the design of the seismic performance of the space grid structure.

【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】：TU399;TU352.11

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