装配式抗侧力钢柱抗震性能研究

发布时间：2018-10-21 20:57

【摘要】：我国近年出台了多项政策鼓励发展装配式建筑和钢结构。本文提出了装配式抗侧力钢柱,该钢柱可以作为抗侧力构件适用于民用建筑结构。在建筑结构中不仅具有较好的抗震性能,满足建筑结构设计的要求,在装配式方面,也可以达到标准化设计、工厂化生产、装配化施工方面等的要求。首先,设计了三组不同类型的装配式抗侧力钢柱,并分别对三组进行了数值模拟分析和拟静力加载试验,主要通过破坏模式、滞回性能等各项性能对三组的抗震性能进行研究,其中有耗能弯和无耗能弯的装配式抗侧力钢柱为研究的重点。其次,设计了装配式抗侧力密网钢柱,通过数值模拟分析的方法对装配式抗侧力密网钢柱的结构形式及尺寸进行了优选。通过分析得到以下结论:(1)从数值模拟分析后的应力云图和试验现象可知,有耗能弯的装配式抗侧力钢柱中缀件的耗能弯部分承担了构件加载后期的主要的抗震耗能,与没有耗能弯的比较,表现出比较优越的变形能力;(2)在柱顶水平向位移加载到层间位移角为1/250时,装配式抗侧力钢柱仍处于弹性阶段,满足规范要求,且承载力呈现出增长的趋势;(3)在柱顶水平向位移加载到层间位移角1/50时,缀件有耗能弯的装配式抗侧力钢柱的承载力仍没有表现出下降的趋势,且耗能能力较缀件无耗能弯的装配式抗侧力钢柱更稳定,耗能弯部分承担了构件加载后期的主要的抗震耗能;(4)通过拟静力加载试验与数值模拟得到的结果吻合较好。所以,通过有限元软件ABAQUS进行数值模拟分析的方法可以作为研究装配式抗侧力钢柱的有效手段;(5)通过对各分组装配式抗侧力密网钢柱模型进行数值模拟分析后,比较各组的滞回性能得到了最优的结构形式和细部尺寸。
[Abstract]:In recent years, China has introduced a number of policies to encourage the development of prefabricated buildings and steel structures. In this paper, a prefabricated steel column for lateral force resistance is proposed, which can be used as a lateral force resistant member for civil construction. In building structure, it not only has good seismic performance and meets the requirements of structural design, but also can meet the requirements of standardized design, factory production, assembly construction and so on. First of all, three groups of different types of fabricated steel columns are designed, and the numerical simulation and quasi-static loading tests are carried out respectively for the three groups. The aseismic performance of the three groups is studied mainly by the failure mode, hysteretic performance and other properties. The emphasis of the study is on the fabricated steel columns with and without energy dissipation bending. Secondly, the fabricated steel column with anti-lateral force is designed, and the structural form and size of the fabricated steel column are optimized by numerical simulation. The following conclusions are obtained from the analysis: (1) from the stress cloud diagram and experimental phenomena after numerical simulation analysis, it can be seen that the energy dissipation bending part of the affixes of the assembled lateral force steel columns with energy dissipation bending bears the main seismic energy consumption in the later stage of the member loading. Compared with those without energy dissipation bending, it shows superior deformation ability. (2) when the displacement angle of column top is 1 / 250, the fabricated lateral force resistant steel column is still in the elastic stage, which meets the requirements of the specification. And the bearing capacity shows an increasing trend. (3) when the horizontal displacement of the column is loaded to the interstory displacement angle of 1 / 50, the bearing capacity of the fabricated steel columns with energy-consuming bending still has no downward trend. The energy dissipation capacity is more stable than the fabricated steel column with no energy dissipation bending, and the energy dissipation bending part bears the main seismic energy consumption in the later loading stage of the member. (4) the results obtained from the quasi-static loading test are in good agreement with the numerical simulation. Therefore, the method of numerical simulation analysis by finite element software ABAQUS can be used as an effective means to study the fabricated steel columns with lateral force resistance. (5) after the numerical simulation and analysis of the steel column models of each group assembly type, The optimum structure and detail size are obtained by comparing the hysteretic performance of each group.
【学位授予单位】：北京建筑大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU391;TU352.11

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