装配整体式混凝土框架结构受力性能试验与有限元分析

发布时间：2018-01-03 11:13

本文关键词：装配整体式混凝土框架结构受力性能试验与有限元分析　出处：《湖南大学》2015年硕士论文　论文类型：学位论文

【摘要】：由于稳定高效率的生产质量以及快捷的生产工艺,装配整体式混凝土框架的应用日趋广泛。合理可靠的装配整体式框架结构分析模型已成为设计及研究人员的共同需要。为了研究装配整体式混凝土框架结构的受力性能,本文进行了装配整体式框架模型低周往复荷载的试验研究,建立了装配整体式框架精细有限元分析模型,并对分析模型开展了深入的研究,完成的工作和取得的成果主要包括:(1)对2榀1/2缩尺2层2跨装配整体式混凝土框架试件进行了低周往复的水平加载试验。PCF-1为传统装配整体式混凝土框架结构;PCF-2为采用本文提出的新型延性构造装配整体式混凝土框架结构。通过试验,研究了装配整体式框架结构在低周往复荷载作用下的受力性能,探索了新型延性构造—预制梁端钢筋套管对整体框架结构的刚度、承载力、延性及耗能能力的影响。(2)建立了装配整体式框架实体精细非线性有限元分析模型,采用混凝土弹簧单元模拟新旧混凝土界面粘结强度对装配结构的影响,采用钢筋弹簧单元模拟套管对钢筋变形能力的影响。精细有限元分析结果与大量国内外装配式框架及节点的试验结果吻合良好。在此基础上,对框架节点的楼板组合作用以及刚度、承载力的影响因素进行了参数分析,得到了装配整体式框架节点刚度及承载力折减系数的简化计算公式。(3)采用建筑结构设计软件YJK,结合精细有限元分析得到的装配整体式框架的刚度及承载力折减系数,分别建立了现浇混凝土框架和装配整体式混凝土框架的算例分析模型,通过非线性动力弹塑性时程分析分别探讨了5层和15层装配整体式混凝土框架结构与现浇混凝土框架结构整体抗震性能的异同,并对装配整体式混凝土框架结构的设计提出了合理化建议。
[Abstract]:Because of high efficient and stable production quality and production process and application of prefabricated concrete frame is widely used. The assembled integral type frame structure analysis model is reasonable and reliable has become the common needs of design and research personnel. In order to study on the mechanical properties of the assembled monolithic concrete frame structure, this paper studied the assembled integral type frame the model of cyclic loading, established the assembled integral type frame finite element analysis model and the analysis model to carry out in-depth research, the main work and achievements include: (1) of 2 1/2 scale 2 span 2 storey precast concrete frame specimens and the horizontal loading test.PCF-1 cycilc for traditional prefabricated concrete frame structure; PCF-2 for the proposed new structural ductility of prefabricated concrete frame structure. A test of the assembled integral type frame structure stress performance under load under low cyclic, and explored the new structural ductility - precast beam end steel sleeve on the whole structure of the stiffness, bearing capacity, impact ductility and energy dissipation capacity. (2) the establishment of the assembled integral type frame solid fine nonlinear finite element analysis model, using concrete spring element to simulate the bond strength of the interface between new and old concrete impact on the assembly structure, using steel spring element to simulate the influence of casing on the deformation of steel capacity. Finite element analysis results are in good agreement with the experiments at home and abroad and the results of the fabricated frame node. Based on the composite effect of frame joints. And the stiffness parameters were analyzed influence factors of bearing capacity, the assembled integral type frame joints and simplified stiffness reduction coefficient of bearing capacity calculation formula. ( 3) the software architecture design of YJK, the stiffness of the assembled integral type frame with finite element analysis and the reduction coefficient of bearing capacity, are established. Numerical analysis model of cast-in-situ concrete frame and precast concrete frame, the nonlinear dynamic elastic-plastic time history analysis were used to explore the similarities and differences between the performance of 5 and 15 layers of precast concrete frame structure and cast-in-situ concrete frame structure seismic, and puts forward reasonable suggestions on the design of prefabricated concrete frame structure.

【学位授予单位】：湖南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU37;TU352.11

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