基于构件变形的剪力墙结构抗震性能研究

发布时间：2018-05-25 07:09

本文选题：剪力墙结构 + 构件变形限值　；参考：《华南理工大学》2014年硕士论文

【摘要】：现行《建筑抗震设计规范》[1]（GB50011-2010）继续沿用“三水准，两阶段”的结构抗震设计方法。该方法采用小震计算结果配筋和相应的构造措施，在很大程度上能够保证结构“大震不倒”，却无法给出结构在大震作用下的真实破坏情况和性能。随着基于性能的结构抗震设计思想的发展，原有设计方法的弊端逐渐显现，，如何对结构抗震性能做出更加准确的评估，从而弥补现有设计方法的不足，成为基于性能的结构抗震设计中亟待解决的问题。基于构件的变形性能，能够更加准确地获得结构的真实破坏状况，评估按现行规范设计的结构实际抗震能力，检验规范抗震措施的合理性，为基于性能的结构抗震设计提供可行的方法和思路。本文基于结构非线性分析与性能评估软件PERFORM-3D，利用基于构件变形的结构性能评估方法，研究了剪力墙结构的抗震性能，主要包括以下研究内容： 1.立足于基于性能的抗震设计思想，搜集已有研究成果和震害实例，指出了现行设计方法的不足之处，并提出了基于构件变形的结构抗震性能判定准则和评估方法。 2.按照现行设计规范规程要求，分不同场地、设防烈度、高度等设计了27个有代表性的剪力墙结构；对结构进行罕遇地震下弹塑性时程分析，并利用基于构件变形的结构抗震性能评估方法对该批结构进行安全性评估，得出按场地周期0.35s和0.45s设计的结构都能满足本文提出的结构性能要求，场地周期为0.65s的结构抗震性能不足。 3.对按0.35s和0.45s场地周期设计的结构进行增量动力分析，利用本文提出的结构性能判定准则，研究了现行规范设计的剪力墙结构的抗大震能力储备，得出剪力墙结构的抗大震能力储备系数基本都在1.2~1.4之间或以上，表明剪力墙结构具有一定的抵抗超大地震的能力。
[Abstract]:The current Code for aseismic Design of buildings [1] GB50011-2010) continues to follow the "three-level, two-stage" seismic design method for structures. By using the reinforcement of small earthquake calculation results and the corresponding structural measures, this method can to a large extent ensure that the structure "does not collapse", but it can not give the true damage situation and performance of the structure under the action of large earthquakes. With the development of performance-based seismic design idea, the disadvantages of the original design method gradually appear. How to make a more accurate evaluation of the seismic performance of the structure, so as to make up for the shortcomings of the existing design methods. It has become a problem to be solved in seismic design of structures based on performance. Based on the deformation performance of the components, the true failure state of the structure can be obtained more accurately, the actual aseismic capacity of the structure designed according to the current code can be evaluated, and the rationality of the seismic measures of the code can be tested. It provides feasible methods and ideas for performance-based seismic design of structures. Based on the structural nonlinear analysis and performance evaluation software PERFORM-3D, the seismic performance of shear wall structures is studied by using the structural performance evaluation method based on structural deformation. The main research contents are as follows: 1. Based on the idea of performance-based seismic design, this paper collects the existing research results and earthquake damage examples, points out the shortcomings of the current design methods, and puts forward the criteria and evaluation methods for evaluating the seismic performance of structures based on structural deformation. 2. In accordance with the requirements of the current design code, 27 representative shear wall structures have been designed in different sites, fortification intensity, height, etc. The elastoplastic time-history analysis of the structures under rare earthquakes has been carried out. The seismic performance evaluation method based on component deformation is used to evaluate the safety of the structures. It is concluded that the structures designed according to the site period 0.35s and 0.45s can meet the structural performance requirements proposed in this paper. The seismic performance of the structure with a site period of 0.65 s is insufficient. 3. The incremental dynamic analysis of the structures designed according to the period of 0.35s and 0.45s is carried out. Using the criterion of judging the structural performance, the reserve of seismic resistance of the shear wall structures designed by the current code is studied. It is concluded that the reserve coefficient of large earthquake resistance of shear wall structures is basically between 1.21.4 and above, which indicates that shear wall structures have the ability to resist large earthquakes to a certain extent.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.2;TU352.11

【参考文献】