【作者】 冯伟；

【导师】 李刚；

【作者基本信息】 湖南大学 ， 岩土工程， 2011， 硕士

【摘要】 高层和超高层建筑抵抗水平方向作用是结构设计的主要任务,选用具有良好抗侧刚度的结构型式是结构设计的关键性问题。而钢筋混凝土剪力墙结构是利用建筑物现浇混凝土墙体作为建筑的承重体系,同时因其抗侧刚度大,整体性好,具有良好抵抗水平作用能力,故在高层和超高层建筑中得到广泛应用。常规的结构设计方法出于简化分析,隔离了上部结构和基础之间的相互作用,导致上部结构设计的不安全和基础设计上的不经济。因为上部结构、基础和地基是一个彼此协调、共同工作的整体,每一部分的工作性状,都是三者共同作用的结果,应用共同作用的理论进行高层建筑设计,才能比较真实地反映结构的实际工作状态,也才可能是最为安全、经济、合理的。因此,考虑上下部结构共同作用的计算方法越来越受到工程界的重视。但共同作用分析作为一种结构设计方法,其理论研究与工程实践尚处于发展和完善阶段,仍有大量基础性工作有待继续探讨。本文系统的阐述了上部结构-基础-地基共同作用的基本方法基础,同时主要完成以下工作内容:(1)利用剪力墙常规设计方法—连续连杆法的基本理论,推导双肢墙和多肢墙在水平荷载作用下上下部结构共同作用的基本方程。(2)用本文提出的共同作用计算方法,分析水平荷载作用下上部结构内力及水平位移,并与常规设计方法进行比较。(3)用本文提出的共同作用计算方法,分析水平荷载作用下当上部结构刚度改变时,上部结构、基础和地基的内力及变形特性。(4)用本文提出的共同作用计算方法,分析水平荷载作用下当基础刚度改变时,上部结构、基础和地基的内力及变形特性。(5)用本文提出的共同作用计算方法,分析水平荷载作用下当地基刚度改变时,上部结构、基础和地基的受力及变形特性。(6)对以上所有分析对象和结果进行讨论,并归纳总结影响共同作用的因素和规律,同时考查文中提出方法的合理性和优越性,讨论其对工程实践的应用性和指导性用途。更多还原

【Abstract】 The main task of structural design is for high-rise and ultrahigh-rise buildings to resist the horizontal effect. Its key problem is to select structure design of good lateral stiffness. The concrete shear wall structure uses cast-in-site concrete building walls as buildings’load-bearing system. It’s widely used in high-rise and ultrahigh-rise buildings because of its strong lateral stiffness, good entirety and resistance of the horizontal effect.Conventional structure design method out of simplifying the analysis isolates the interaction between upside structure and foundation, resulting in unsafety of upside structure design and uneconomicalness of the foundation design. Because the superstructure, ground base and foundation are a co-ordination with each other, working together as a whole; the work effect of each part is the result of combined action, the theory of interaction should be adopted to design high-rise buildings. Only in this way can the actual structure working state be truly reflected and only then can it be the safest, most economical and reasonable. Therefore, considering the calculation method of interaction between the upper and lower structures attracts more and more attention of the Engineering. However, analysis of interaction is used as a structural design method. Its theoretical research and engineering practice is still in the stage of development and perfection. There is still a lot of basic work to be continued.This paper systematically elaborates on the interaction between the superstructure, ground base and foundation and mainly finished the following work:(1) Using conventional shear wall design method—the basic theory of coupling beams, it derived the basic calculation equations of interaction between the upper and lower structures of double shear wall and multi-shear wall under horizontal load.(2) Based on the calculation equations of interaction proposed in this paper, it analyzed the internal forces and horizontal displacement of the upper structure under horizontal load and compared it with conventional design method.(3) Based on the calculation equations of interaction proposed in this paper, it analyzed, when the level of stiffness of the superstructure changes, the internal forces and deformation characteristics of the superstructure, ground base and foundation under horizontal load. (4) Based on the calculation equations of interaction proposed in this paper, it analyzed, when the level of stiffness of the ground base changes, the internal forces and deformation characteristics of the superstructure, ground base and foundation under horizontal load.(5) Based on the calculation equations of interaction proposed in this paper, it analyzed, when the level of stiffness of foundation changes, the stress and deformation characteristics of the superstructure, ground base and foundation under horizontal load.(6) All of the above analytic targets and results were discussed and the factors and law that affect the interaction were summarized too. The paper also examined the rationality and superiority of the proposed method and discussed its application and guidance in engineering practice.更多还原