新型防屈曲约束支撑有限元分析研究

摘要：中国是一个多发地震的国家所以在结构设计中抗震设计就变得尤其重要而且高层结构直接关系到人民的生命财产安全，故对其抗震的研究就尤其重要。根据调查发现：在建设的构造设计中,支撑已获得广泛的应用。然而，现在用的那些支撑很容易发生压缩变形情况，受到很大的轴向力后的支撑的刚度和屈曲载荷会迅速下降。故顺应可持续发展与抗震设计的准则“一种新型的防屈曲约束支撑”便应运而生了。在满足抗震要求的可持续发展和“一种新型屈曲约束支撑研究”理论的基础上，本文从设计理论、有限元分析、构造措施以及实际工程案例等方面详细讲解了防屈曲支撑在混凝土结构抗震中的设计方法。本槽钢套筒约束一字形纯钢屈曲约束支撑通过将芯板的两侧分袂卡设在槽钢套筒腹板约束件内实现面接触约束，提高并且把持了芯材抗局部抗屈曲的能力如此一来设计使之屈曲约束支撑的滞回性能优良。提高而且利用了芯材抗局部屈曲的能力，不必添补约束料，使得自重大大降低，钢材利用率是十分高的，从而取得了最佳的经济效益。52686

毕业论文关键词:屈曲约束支撑；滞回性能；有限元分析；应用

Study on a new type of finite element analysis of buckling restrained brace

Abstract: China is a country of multiple earthquakes in seismic design of structure design of particularly important and directly related to people's life and property safety of high-rise structure, so the seismic study is particularly important.According to a survey: in the design of building structures,support has been widely used.Now, however, those supports are prone to deformation, subjected to great axial force of brace stiffness buckling loads and decreased rapidly.Adaptation and seismic design criteria for sustainable development, "a new kind of buckling-restrained braces" can develop.Meet the seismic requirements of sustainable development and "a new study on buckling-restrained braces" on the basis of the theory of, based on design theory, finite element analysis,structural measures, and actual project details the buckling-restrained brace in seismic design method of concrete structures.The steel sleeve and conditions I-shaped steel buckling restrained braces by respectively on either side of the core Board card in steel sleeve within the constraints of the Web to achieve contact, improve and control the local buckling resistance as a result resistance core material hysteresis of design of buckling-restrained braces and excellent performance.Enhancing the capacity of local buckling resistance and use the core material, don't fill material constraints, making weight is greatly reduced,steel utilization rate is very high,so as to achieve the best economic benefit.

KeyWords: Buckling-restrained brace;Hysteretic behavior; Finite element analysis; Application

1 绪论 1

1.1 引言 1

1.2 传统抗震设计方法与结构抗震体系 2

1.2.1 传统抗震设计方法 2

1.2.2 结构抗震体系 2

1.3 耗能支撑 3

1.3.1 结构控制原理 3

1.3.2 传统耗能支撑的形式 3

1.3.3 防屈曲耗能支撑 5

1.4 防屈曲耗能支撑探究历史与现状 5

1.4.1 国外研究 5

1.4.2 国内研究 6

1.4.3 工程应用新型防屈曲约束支撑有限元分析研究:http://www.751com.cn/gongcheng/lunwen_56666.html