方钢管混凝土梁柱装配式节点的抗震性能研究

发布时间：2018-06-20 00:14

本文选题：方钢管混凝土柱 + 隔板贯通式节点　；参考：《东南大学》2015年硕士论文

【摘要】：钢管混凝土结构具有承载力高、塑性好、施工方便和耐火性能好等优点。近年来,随着住宅产业化的提出,国内开展了一系列工程项目的建设,其中多采用钢管混凝土结构,节点性能是决定钢管混凝土结构抗震性能的一个重要因素。本文将对隔板贯通式节点做进一步研究,为其在工程中的应用提供依据。本文介绍了钢管混凝土柱-钢梁节点的常用形式,归纳总结了近年来国内外对钢管混凝土柱-钢梁节点的研究方向以及概况。针对隔板贯通式节点构造上的特殊性,本文研究了钢管宽厚比、节点域钢管壁厚对节点抗震性能的影响,并设计4个隔板贯通式节点进行拟静力试验,观察记录各试件的破坏过程和特征,对节点的抗震性能指标,包括节点承载力、延性、耗能能力等进行对比分析。试验结果表明：隔板贯通式节点抗震性能良好,满足抗震设计的要求；随着钢管壁厚的增加,节点的承载力和耗能能力有所提高；增加节点域的钢管壁厚,节点域的剪切变形减小。本文对试验中的4个隔板贯通式节点进行数值模拟分析,将试验值和理论值进行对比,两者吻合良好。在此基础上,对节点进行参数化分析,考察钢管内混凝土、轴压比、隔板外伸长度对节点承载力的影响。
[Abstract]:Concrete-filled steel tube (CFST) structure has the advantages of high bearing capacity, good plasticity, easy construction and good fire resistance. In recent years, with the development of housing industrialization, a series of construction projects have been carried out in China, in which concrete filled steel tubular structures are mostly used, and the performance of joints is an important factor to determine the seismic behavior of concrete filled steel tubular structures. In this paper, a further study will be made on the diaphragm through joint to provide the basis for its application in engineering. This paper introduces the common forms of concrete-filled steel tubular column-steel beam joints and summarizes the research directions and general situation of concrete-filled steel tubular column-steel beam joints at home and abroad in recent years. In view of the particularity of the structure of the diaphragm through joint, the influence of the steel pipe width to thickness ratio and the steel pipe wall thickness in the joint area on the seismic behavior of the joint is studied in this paper, and four diaphragm through joints are designed to carry out quasi static test. The failure process and characteristics of each specimen were observed and recorded, and the seismic performance indexes of joints, including bearing capacity, ductility and energy dissipation capacity of joints, were compared and analyzed. The test results show that: the seismic performance of the diaphragm through joint is good to meet the requirements of seismic design; with the increase of the steel pipe wall thickness, the bearing capacity and energy dissipation capacity of the joint are improved; the steel pipe wall thickness in the joint region is increased. The shear deformation in the node domain is reduced. In this paper, the numerical simulation analysis is carried out on the four diaphragm through joints in the experiment, and the experimental results are compared with the theoretical ones, and the results are in good agreement with each other. On this basis, the effects of concrete in steel tube, axial compression ratio and elongation outside the partition plate on the bearing capacity of the joints are investigated by parameterized analysis.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU398.9

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