Research on Modeling Methods of T-Shaped Steel-Concrete Filled Steel Tube Composite Special-Shaped Columns Based on Common Design Software
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摘要: T型钢-钢管混凝土组合异形柱是一种由T型钢和钢管混凝土形成的新型组合结构构件,具有不突出墙体、抗震性能好、施工方便、连接便利等突出优点。该类构件既保留钢管混凝土和T型钢的优势,同时又解决钢管混凝土柱与墙体、钢梁连接困难、长柱抗弯能力较弱和构件凸出墙面等问题。然而,目前尚无可供设计人员使用的T型钢-钢管混凝土组合异形柱建模方法,严重制约了新型构件的工程示范与应用推广。为此,开展了T型钢-钢管混凝土组合异形柱的水平单调加载试验研究和软件建模方法研究。基于验证后的建模方法,探究建模方法的选择对结构体系力学性能的影响,并提出设计建议。Abstract: The T-shaped steel-concrete filled steel tube (CFST) composite special-shaped column is a kind of space grid structure formed by T-shaped steel and CFST. It has the outstanding advantages of non-protruding walls, excellent seismic performance, ease of construction, and convenient connection. This type of component not only retains the advantages of CFST and T-shaped steel, but also addresses issues like difficulties in connecting CFST columns with walls and steel beams, the weak flexural capacity of long columns, and the protrusion of components from the wall surface. However, there is no modeling method available for T-shaped steel-CFST composite columns that can be utilized by designers, which significantly limits the engineering demonstration and application of these innovative components. Therefore, the study aimed to conduct horizontal monotonic loading tests and investigate modeling methods of software for T-shaped steel-CFST composite columns. Based on validated modeling methods, the study explored the impact of different modeling methods on the mechanical properties of the T-shaped steel-CFST composite column structural system and provide design recommendations.
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