超高层结构筒体剪力墙优化设计

发布时间：2018-06-21 19:35

本文选题：超高层 + 筒体剪力墙　；参考：《北京建筑大学》2017年硕士论文

【摘要】：在超高层结构的常规结构设计方法中,很多结构设计人员在保证结构安全性的同时忽略了对结构进行更深入的优化。这些优化不仅能减少投资方的投资,减少不必要的损失,还能节约资源,减少浪费。本课题的研究目的就是通过对实际工程项目进行分析研究,将超高层结构筒体设计的基本要点予以提炼,构成一套行之有效的设计指导流程。首先,本文选取设计院六个超高层项目并对他们进行优化分析,通过计算得到材料用量统计来讨论筒体剪力墙结构材料用量的外部影响因素。主要研究了结构高度、抗震设防烈度、结构体系共三个主要外部因素的对结构整体材料用量的影响。外部因素的影响效果分析结论通常在工程项目前期可以发挥重要参考价值,因而本章结论主要可以作为指导项目前期的方案和决策阶段的重要依据,可以用来知道筒体剪力墙优化设计措施的项目前期设计。其次,介绍了YJK、PUSHOVER、SAUSAGE的主要计算原理,是本文的研究方法和理论依据,并作为后续研究的技术基础。第三,分析了筒体剪力墙结构材料用量内部影响因素分析的结构优化方案。引入内部因素分析,并结合内部影响因素的初步判别结果提出结构优化方案,主要分为四部分:(1)筒体剪力墙结构材料用量内部影响因素分析。主要是通过力学机理分析提出可能影响剪力墙结构材料用量的内部影响因素;(2)内墙、外墙布置影响分析,该部分内容主要针对筒体结构的内墙、外墙分配比例予以分析和提出相应的结构优化方案;(3)连梁刚度及设性能置方案分析,该部分主要针对筒体剪力墙的连梁的设置方案进行分析,并提出相应的结构优化方案;(4)墙肢长度比选分析,该部分主要针对筒体剪力墙墙肢长度及结构洞设置方案进行分析,并提出相应的结构优化方案。最后,通过PUSHOVER和SAUSAGE有限元分析软件对优化后的结构进行性能分析及安全性论证。从经济层面以外的结构合理性和结构安全性方面展开论证,即从小震弹性指标分析和大弹塑性损伤分析来分工况论证,证明了采取的的优化措施不以牺牲结构安全性作为代价。从而验证了优化方法的合理性。
[Abstract]:In the conventional structural design methods of super-tall structures, many structural designers neglect to optimize the structures while ensuring the safety of the structures. These optimizations can not only reduce the investment of investors, reduce unnecessary losses, but also save resources and reduce waste. The purpose of this research is to analyze and study the actual engineering projects, to refine the basic points of the design of the super-tall structure cylinder, and to form a set of effective design guidance flow. Firstly, this paper selects six super high-rise projects of the design institute and optimizes them, and discusses the external influence factors of the material quantity of the tubular shear wall structure by calculating the material consumption statistics. The effects of three main external factors, such as structural height, seismic fortification intensity and structural system, on the material consumption of the whole structure are studied. The conclusion of the analysis of the effect of external factors can usually play an important reference value in the early stage of the project, so the conclusion of this chapter can be used as the important basis to guide the plan and decision-making stage of the early stage of the project. It can be used to know the optimal design measures of the tubular shear wall. Secondly, the main calculation principle of YJKPUSHOVERGE-SAUSAGE is introduced, which is the research method and theoretical basis of this paper, and serves as the technical basis for further research. Thirdly, the structural optimization scheme of the internal influencing factors analysis of the material content of the tubular shear wall structure is analyzed. By introducing internal factor analysis and combining with the preliminary discriminant result of internal influence factors, the structural optimization scheme is put forward, which is mainly divided into four parts: 1) the internal influence factor analysis of material quantity of tubular shear wall structure. Through the analysis of mechanics mechanism, the paper puts forward the internal influence factors that may affect the material content of shear wall structure, such as internal wall and exterior wall arrangement, which are mainly aimed at the inner wall of tube structure. The distribution ratio of external wall is analyzed and the corresponding structural optimization scheme is put forward. The stiffness and performance of connecting beam are analyzed. This part is mainly aimed at the arrangement scheme of connecting beam of tubular shear wall. The paper also puts forward the corresponding structural optimization scheme and gives a comparative analysis of the length of the wall limb. This part mainly analyzes the length of the wall limb of the cylinder shear wall and the configuration scheme of the structure hole, and puts forward the corresponding structural optimization scheme. Finally, the performance analysis and safety analysis of the optimized structure are carried out by using the software of pusher and SAUSAGE finite element analysis. The rationality and safety of structures beyond the economic level are discussed, that is, the analysis of elastic index of small earthquakes and the analysis of large elastic-plastic damage. It is proved that the optimization measures adopted are not at the expense of structural safety. The rationality of the optimization method is verified.
【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】：TU973.1

【参考文献】