方钢管混凝土组合异形柱结构性能与设计方法研究

项目名称： 方钢管混凝土组合异形柱结构性能与设计方法研究

项目编号： No.51308387

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 建筑科学

项目作者： 周婷

作者单位： 天津大学

项目金额： 25万元

中文摘要： 方钢管混凝土组合异形柱结构是由单根方钢管混凝土柱相互连接组成的异形柱结构，包裹在墙体内部，能够增加使用面积，具有良好的抗震能力与经济性能，而且施工工艺易于掌握，随着土地价格走高与人们对住房要求的提高，这种新型结构具有良好的发展前景。应在构件力学性能研究的基础之上，深入研究，通过框架的拟静力试验、实体单元有限元分析与简化数值模拟，明确整体结构的抗震性能；同时得到一种双单元简化数值建模方法，可推广应用到其他方钢管混凝土结构模拟中；然后通过三维结构模型的计算分析，建立小高层方钢管混凝土组合异形柱结构设计方法；最后，结合试验分析与数值模拟，推导、修正、拟合承载力计算公式，并将公式嵌入通用设计软件。通过上述研究，能够明确方钢管混凝土组合异形柱结构的力学性能与工作机制，建立小高层方钢管混凝土组合异形柱结构设计方法，提出简化计算公式并建立与设计软件的接口，为新结构的推广应用奠定理论基础。

中文关键词： 方钢管混凝土组合异形柱；抗震性能；计算公式；设计方法；

英文摘要： The SCFST (special shaped column composed of concrete-filled square tubular) columns are composed of several concrete-filled square tubular columns connected by connection plates. The SCFST structure will be widely used in residential buildings due to its advantage of providing larger indoor space and better seismic performance. Additionally, the construction technology of SCFST is easy for builders. With an increase in both land price and need for living quality, the demand for SCFST will highly grow up. The mechanical properties of SCFST columns have been studied in the past few years. However, the seismic behavior of the whole SCFST structures needs experimental verification. In this proposal, the seismic test of SCFST structure is proposed, and the finite element model will be established. A new method of simulation called double-elements method will be presented to largely reduce calculating time without losing accuracy. Moreover, the 3D structural model of high SCFSC building will be established to analyze the structural behavior. The simplified calculating formula will be developed, meanwhile, verified by the test results. Finally, this formula will be embodied in general design software. According to the study above, the mechanical properties of SCFST structure will be determined, the design method of hi

英文关键词： Spcial shaped column composed of CFT；seismic behavior；calculating method；design method；