【作者】 张峰；

【导师】 陆伟东；

【作者基本信息】 南京工业大学 ， 桥梁与隧道工程， 2015， 硕士

【摘要】 现有中高层木结构建筑中,木结构支撑耗能能力一般,且连接节点木材容易发生受拉劈裂破坏或者螺栓的剪切破坏。屈曲约束支撑不但可以有效地解决这些问题,而且可以改变结构的动力特性。如今,屈曲约束支撑在中高层木结构建筑上的研究和实际应用很少。本文分析指出现有屈曲约束支撑若要实际应用于中高层木结构建筑中应当考虑解决自重大、与建筑协调性等问题。鉴于此,本文提出一种轻质的新型钢-木屈曲约束支撑。自主研发的新型钢-木屈曲约束支撑的基本构造、工作原理、制备工艺、耗能性能和设计方法均需展开相关研究,针对以上几方面,本文进行了以下几方面的工作：1、提出了钢-木屈曲约束支撑的基本构造。结合胶合木的可设计性,支撑采用正交胶合木作为约束构件,使支撑具有轻质高强的特点。2、基于正交胶合木成型工艺设计新型钢-木屈曲约束支撑的制备工艺流程,设计并制作8根缩尺钢-木屈曲约束支撑模型。3、开展钢-木屈曲约束支撑在低周反复加载作用下的整体性、耗能能力、延性、刚度退化等性能指标的研究,与钢填板螺栓连接木支撑进行对比研究。4、分析钢-木屈曲约束支撑的工作原理；对钢-木屈曲约束支撑的等效刚度、间隙控制值、整体稳定、内芯受力单元稳定、连接段稳定等进行理论分析和相关公式的推导。5、通过对试验数据的拟合,得出钢-木屈曲约束支撑的恢复力模型。6、对钢-木屈曲约束支撑的设计方法进行探讨,提出支撑的设计流程,为将来工程应用提供参考。根据本文的研究可知,钢-木屈曲约束支撑具有整体性好、轻质的特点,同时支撑具有良好的耗能能力,是一种具有广泛应用前景的新型耗能支撑。更多还原

【Abstract】 In the existing constructions of high-rise wood frame, the energy dissipation capacity of the brace with the wooden structure is general, and the connection node is easy to splitting wood prone to damage or tensile shear failure of the bolt. Not only can buckling restrained braces effectively solve these problems, but also it can change the dynamic characteristics of the structure. Nowadays, the research of buckling restrained braces on the wooden structure is little practically applied. This paper analyzes that the existing buckling restrained braces applied to the construction of the high-rise wood frame should be considered to solve the self-important, and construction coordination issues. In the view of this, we propose a new kind of lightweight steel-timber Buckling Restrained Brace.The steel-timber Buckling Restrained Brace is an independent research and development of energy dissipation device, so we need to study the following aspects of it, such as the basic construction,the working principle, the manufacturing process,the energy-dissipating capacity and the design method. This article mainly completed the following works:1. This article puts forward the steel-timber Buckling Restrained Brace’s basic construction. Combining with the designability of glulam, this article puts forward the idea of the avoid filling buckling-restrained member which has the characteristic of light weight and high strength.2. Based on the Orthogonal laminated glulam molding process, this article has designed the process flow of steel-timber Buckling Restrained Brace.This article has designed and produced eight root scale models.3. By the experiment, the steel-timber Buckling Restrained Brace’s performance indexes under low reversed cyclic loading have been studied, including the overall performance, the energy dissipation and so on.At the same time, the steel- timber Buckling Restrained Brace is compared with the glulam brace with the slotted-in steel plate bolt connection.4. The basic working principle of the steel-timber Buckling Restrained Brace has been analyzed in this article. By the theoretical deduction, the main mechanical properties of the steel-timber Buckling Restrained Brace are given, such as the equivalent elastic stiffness, the equivalent elastic-plastic stiffness, the minimum gap, the global stability, the stability of steel core member, the statiblity of the connection section and so on.5. By fitting the test data, we has got the hysteretic model of steel-timber Buckling Restrained Brace.6. Finally, this article has discussed the design method of the steel-timber Buckling Restrained Brace and put forward the design process of the steel-timber Buckling Restrained Brace.According to the research of this article, we can see that the steel-timber Buckling Restrained Brace has the characteristics of good integrity and light weight,also it has a good energy dissipation performance. The steel-timber Buckling Restrained Brace is a kind of new Buckling Restrained Brace which has wide application prospect.更多还原