【作者】 孙涛；

【导师】 王庆利；

【作者基本信息】 沈阳建筑大学 ， 结构工程， 2011， 硕士

【摘要】 中空夹层钢管混凝土是一种新型的钢管混凝土结构,其构件是将两层钢管同心放置,并在两层钢管之间浇注混凝土而形成的构件。该类构件除了保持传统的钢管混凝土构件的特点,还具有截面开展、抗弯刚度大、自重轻、抗震性能好和防火性能好等特点。鉴于以上实际情况,本文对圆套圆中空夹层钢管混凝土柱-钢梁节点静力性能进行了研究,具体进行的工作有以下几方面：(1)综述了中空夹层钢管混凝土结构的特点,讲述了课题提出的背景,介绍了本文课题研究的目的、方法和内容。(2)以节点柱空心率和轴压比为参数,进行了9个圆套圆中空夹层钢管混凝土柱—钢梁节点的静力性能试验研究。(3)考察了各参数对节点力学性能和破坏模式的影响规律,分析了节点柱空心率与轴压比对构件承载力及各部分荷载—应变的影响规律。(4)试验结果表明,空心率和轴压比对圆套圆中空夹层钢管混凝土柱-钢梁节点的静力性能有很大的影响,随着空心率的增大,节点的承载力有所下降。更多还原

【Abstract】 Concrete-Filled Double Skin Tube is a new Steel Tube Confined Concrete Structure. The component is placed on the two concentric steel tube and pouring concrete between two layers of formed steel components. The Steel Tube Confined Concrete Structures not only maintains the traditional characteristics of concrete structures,but also has carried out cross-section, bending stiffness, light weight, good seismic performance and fire performance characteristics. In view of the actual situation, this paper has studied on Static Performance of Steel Beam to Concrete-filled double skin steel tubular column. The specific work is carried out by the following aspects:(1) This article summarized the characteristics of Concrete-filled double skin tube structures,as well as the subject’s background, the purpose of this research, methods and content.(2) The static performance of 9 concrete-filled double skin steel tubular columns joint with circular hollow section inner and circular hollow section outer columns are studied in this article. The parameters are the axial compression ratio and hollow section ratio.(3) The effects of various parameters on the mechanical properties and failure modes of these joints are studied, also the influences of the axial compression ratio and hollow section ratio on the ultimate bearing capacity and strain are analyzed.(4) The results show that the hollow section ratio and the axial compression ratio have a great influence on the static properties of Steel Beam to Concrete-filled double skin steel tubular column. With the hollow section ratio increased, the ultimate bearing capacity decreased.更多还原