摘要： 近年来，在亚洲，对屈曲约束支撑的研究越来越流行，尤其是在日本地区。我国 也不甘落后，开始大力研究屈曲约束支撑，并且不仅仅局限于建筑领域。屈曲约束支撑， 因其优势，即能受拉受压且都有稳定的屈服承载力，拥有很好的支撑性能和耗能性能。 而在大部分钢结构结构中，钢棒都会是主要的支撑构件。所以本文旨在对一种新型的受 压可屈服型钢棒进行研究，通过 ABAQUS 有限元分析软件，结合试验对受压可屈服型 钢棒的支撑性能进行研究。希望这种智能钢棒，受压受拉可屈服但不屈曲的良好性能， 可以未来广泛应用于各工程领域的支撑体系中，在减少工程的总用钢量的同时，也大大 提升其支撑性能。69814

毕业论文关键词：  屈曲约束；有限元分析；滞回曲线；

Study on the Steel Rod with Compression can Yield

Abstract: In recent years, studies of buckling restraint in Asia have become increasingly popular, especially in Japan. Our country is not backward, and we are beginning to study the buckling constraint and not only the construction area. In traditional steel construction, steel rods are used as a kind of support system. Research an intelligent compression can yield steel rod support, make the steel bar can not only sustain tension, can also be under pressure, so as to improve the mechanical performance of steel bar is everyone wants to achieve common development goals. Will happen due to the pressure under the action of bending, buckling, small crane equipment support system and steel structure roof supporting system of medium engineering applications, steel bar as a "lever" use only, and to the location of the configuration other artifacts under pressure to pressure. So this kind of pressure can yield smart steel rod support, will become a kind of economic technology and superior performance, it can improve the compression bearing capacity of steel rod, no additional Settings under pressure in the engineering application structure, reduce the project total steel quantity.

Therefore, the purpose of this project is to establish an anti-buckling steel rod model, and based on the calculation foundation of ABAQUS based on finite element analysis software, the supporting performance of steel rods is carried out.

Keywords:  Buckling Restrained Braces (BRBs); the Finite Element analysis; Hysteresis loop

目录

1 绪论 1

1.1  屈曲约束支撑概念提出 1

1.2  屈曲约束支撑构件介绍 1

1.2.1  主要组成 2

1.2.2  基本工作原理 2

1.3  屈曲约束支撑优点 4

1.4  课题设计的意义 4

1.5  课题设计技术背景 5

1.6  试验试件设计说明。 5

2 钢棒屈曲约束支撑有限元分析 8

2.1 ABAQUS 软件简介 8

2.2 ABAQUS 分析方法 8

2.2.1  三维建模 8

2.2.2  材料属性 8

2.2.3  相互作用 9

2.2.4  网格划分 9

2.2.5  模拟分析步 9