【作者】 孟祥强；

【导师】 郭远翔；

【作者基本信息】 华南理工大学 ， 结构工程， 2011， 硕士

【摘要】 设置少量抗震墙的RC框架结构是一种特殊的结构体系,在建筑中已经得到广泛应用。建筑抗震规范只是从概念上对此种结构体系的弹性层间位移角限值加以说明,无具体理论依据阐述,其具体取值常常困扰着结构工程师。为此,在广泛阅读国内外文献的基础上,本文以地震灾害和基于性能的抗震设计理论为出发点,详细介绍了建筑结构控制层间位移角限值的主要目的,收集并整理了部分框架结构和剪力墙结构的试验数据和统计数据,根据我国抗震规范对结构变形限值的基本要求,综合考虑首层位移限制的重要性、业主震害修复费用的承受能力、建筑的功能性和规范的可实施性,给出了框架结构和剪力墙结构的弹性层间位移角限值,并以此为基础,结合设置少量抗震墙的框架结构的受力变形特点给出了该种结构体系弹性层间位移角的理论限值。接着,通过引入损伤指数,从材料、构件和结构三个层次进行损伤研究,认为双参数模型能够考虑位移首次超越和塑性累积损伤联合效应的影响,并给出了基于ABAQUS混凝土损伤塑性模型和三维非线性地震响应分析的结构损伤性能评估过程。最后,以给出的弹性层间位移角的理论限值为基础,设计两个试算模型,通过对其进行结构损伤性能评估后认为,当设置少量抗震墙的RC框架结构首层的弹性层间位移角限值取1/1200,其它层取1/800时,能够实现规范规定的多遇地震相应的抗震设防性能目标。总之,本文对设置少量抗震墙的RC框架结构弹性层间位移角限值所做的研究工作,对其他结构体系或超限结构体系层间位移角的确定具有一定的参考意义。更多还原

【Abstract】 RC frame structure with a small quantity of shear walls is a special structural system, having been widely used in the construction. Code for seismic design of buildings simply explains the limit of elasticity inter-story drift ratio for such a structural system only from the conceptual, because of no specific theory described, the selection of specific values are often plagued by structural engineers.Therefore, on the basis of extensive domestic and international documents, as a starting point of earthquake and performance-based seismic design theory, this paper detailed introduces the main purpose of controlling the limit of inter-story drift ratio in structures, to collect and collate some test data and statistics of the frame structure and the shear wall, according to the basic requirements for structural deformation in China’s seismic code, and considering the importance of the first floor,the affordability of the owners on the repair costs, the use of building and enforceability of code, this paper suggests the limit of elasticity inter-story drift ratio for the frame structure and the shear wall, and on this basis, combined with the force and deformation characteristics of RC Frame Structures with a small quantity of shear walls, this paper presents the limit of elasticity inter-story drift ratio for the structuralsystem. Then, by introducing the damage index, researching on damage from three levels of the materials, components and structures, two-parameter model is appropriate that considers both the damage caused by dissipated energy and that caused by displacement overpass, this paper gives performance assessment process of structural damage on concrete damage plasticity of ABAQUS and three-dimensional nonlinear seismic response analysis.Finally, this paper designs two model that meet the requirements of the given limit of elasticity inter-story drift ratio. After its performance assessment of structural damage, it is appropriate for RC Frame Structures with a small quantity of shear walls that the limit of elasticity inter-story drift ratio at the first floor take 1/1200, and at other layers take 1/800. Seismic performance objectives of frequent earthquake can be achieved in this limit.In short, the research on the limit of elasticity inter-story drift ratio for RC Frame Structures with a small quantity of shear walls in this paper is the same with other structural system or gauge structural system to determine inter-story drift ratio.更多还原