钢管混凝土柱和型钢混凝土柱的工程实用性对比分析-结构工程专业论文.docxVIP

The Comparative Analysis of Mechanical Behavior of CFST and SRC A Thesis Submitted to Chongqing University in Partial Fulfillment of the Requirement for the Degree of Master of Engineering By Rui Rui Supervisor: Prof. Huang Zongming Major: Structure Engineering College of Civil Engineering of Chongqing University, Chongqing, China. May. 2011  中文摘要 重庆大学硕士学位论文 I  PAGE 4 摘 要 以往研究者分别对钢管混凝土（Concrete-filled Steel Tubes，简称 CFST）柱和 型钢混凝土(Steel Reinforced Concrete，简称 SRC)柱在轴压、偏压作用下的性能进 行了大量研究，对压弯、扭转、压扭及地震作用下的工作性能也有一些研究报道， 但是研究工作，特别是对这两种组合柱的受力性能对比分析研究较少，因此关于 这两者的受力性能对比分析研究有必要深入。 本文在以往有关研究成果的基础上，对钢管混凝土柱和型钢混凝土柱在轴压 和压弯作用下的承载能力和延性进行了对比研究，具体进行了以下几个方面的工 作： ① 基于以往研究者的研究结果，选取有试验依据的合理的钢管混凝土柱和型 钢混凝土柱的 ABAQUS 数值分析模型，为之后的对比分析工作提供模型依据； ② 采用 ABAQUS 有限元分析软件对钢管混凝土柱和型钢混凝土柱在轴压、 压弯作用下进行受力性能和延性分析； ③ 研究的影响参数为混凝土强度等级、钢材强度、含钢率以及轴压比；在影 响参数分析结果的基础上归纳出这两种组合柱的不同受力状态下的峰值承载能力 和延性的影响规律和差异，从而为设计人员提供一种直观有效的参考依据。 关键词：钢管混凝土，型钢混凝土，有限元法，峰值承载力，延性  英文摘要 重庆大学硕士学位论文 III  PAGE 6 ABSTRACT For the last decades, numerous scientific studies have been conducted in terms of performance of Concrete-filled Steel Tubes (referred to as CFST) and Steel Reinforced Concrete (referred to as SRC) loaded in combined axial compression and eccentric compression. There are also some research reports on the working performances under the action of compression bending, torsion, twist-compression and earthquake, but the research work, especially the comparative analysis of mechanical behavior of these two composite columns are rare. Hence, it is necessary to do an in-depth research on this topic. On the basis of former related research achievements, a comparative study on carrying capacity and ductility of CFST and SRC loaded in combined axial compression and compression bending is presented in this paper including the following specific aspects: ① Based on the findings of previous researchers, a stable and reasonable CFST and SRC ABAQUS numerical analysis model is selected on purpose of providing model basis for the following