【作者】 王跃；

【导师】 孙国华； 冯进；

【作者基本信息】 苏州科技大学 ， 建筑与土木工程（专业学位）， 2017， 硕士

【摘要】 半刚接钢框架内填暗竖缝RC墙(Partially-restrained Steel Frame with concealed vertical slit RC Infill Walls,简称PSRCW)是一种新型的组合结构,通过将设置暗竖缝的钢筋混凝土剪力墙内嵌与钢框架结构中,用抗剪连接件将其形成整体,这种结构体系能充分发挥钢结构的轻质高强、变形能力好,以及钢筋混凝土墙抗侧刚度大的优点,解决传统剪力墙结构在震后底部结构压碎不易修复的难题。目前,世界上大多数国家的抗震设计规范仍采用基于强度的抗震设计理论,而超强系数是基于承载力抗震设计中的一个关键参数。半刚接钢框架内填暗竖缝RC墙结构作为一种新型组合结构体系,在我国地震设防区具有广泛的应用前景。为推广其工程应用,应对其进行合理抗震设计,需明确量化其超强系数。为此,本论文采用有限元分析手段,综合考虑材料性能的随机性和实际地震动的随机性,考虑结构层数、抗震设防烈度、跨度等主要因素对半刚接钢框架内填暗竖缝RC墙结构超强的影响,系统研究、量化半刚接钢框架内填暗竖缝RC墙结构的超强系数,为其理论研究和工程应用提供参考。本文主要研究工作如下:(1)根据我国抗震设计规范,考虑结构层数(5层、10层、15层)、抗震设防烈度(7度、8度、9度)、跨度(带墙跨5.7m、6.6m、7.8m)等因素影响,采用两阶段设计方法,设计7个合理的半刚接钢框架内填暗竖缝RC墙结构的标准算例;(2)在标准算例模型的基础上,考虑混凝土、钢筋、钢材等材料参数的力学性能的随机性,采用Latin超立方抽样方法对基准算例进行扩展;(3)采用循环Pushover分析方法量化半刚接钢框架内填暗竖缝RC墙结构的超强系数;(4)采用增量动力时程分析方法,考虑地震动的随机性,量化半刚接钢框架内填暗竖缝RC墙结构的超强系数;(5)对两种方法量化的半刚接钢框架内填暗竖缝RC墙结构的超强系数值进行比较。更多还原

【Abstract】 Partially-restrained Steel Frame with Concealed Vertical Slits RC Infill Walls(PSRCW)is an innovative composite structural system,it is a new type of composite structure,embedding the reinforced concrete shear wall in the steel frame structure through the shear connections,the structure will be formed as a whole.This structure can give full play to lightweight,high strength and deformation ability of the steel structure,and anti-lateral stiffness of reinforced concrete wall,it can also solve the problem that traditional shear wall structure is difficult to be repaired at the bottom after the earthquake.At present,seismic design specifications of most countries in the world are still based on the seismic design theory of strength,and overstrength coefficient is a key parameter of the seismic design based on the bearing capacity.PSRCW has a wide application prospect in China’s seismic fortification area as a new type of composite structure.To promote its engineering applications,its overstrength coefficient is needed to quantifed clearly to design it reasonably.In this paper,the finite element analysis method is adopted,the randomness of material properties and the actual ground motion are considered.The main factors such as the number of structural layers,seismic intensity and span are are considered,the overstrength coefficient of PSRCW is quantified and researched systematically,this research can provide a reference for PSRCW’s theoretical research and engineering applications.The main centent of this research is as follows:(1)According to the seismic design of China,considering the influence of structural layer(5,10,15 layers),seismic fortification intensity(7,8,9 degrees)and span(with wall span 5.7m,6.6m,7.8m),a two-stage design method is used to design the seven standard example models;(2)On the basis of the standard example models,considering the randomness of the mechanical properties of concrete,steel bar and steel,the Latin hypercube sampling method is used to extend the example models;(3)The Pushover analysis method is used to quantify the overstrength coefficient of PSRCW;(4)The incremental dynamic time history analysis method is used,considering the randomness of ground motion,the overstrength coefficient of PSRCW is researched;(5)Comparing the overstrength coefficient of PSRCW with two methods.更多还原