| Summary: | 碩士 === 國立交通大學 === 土木工程系所 === 96 === Framed-tube structure is an economical structural type and widely used in high-rise buildings. The framed-tube structure is formed by closely spaced perimeter columns that are connected by deep spandrel beams. As a result of the finite stiffness of the column and beam elements, the primary mode action of a framed-tube structure under lateral forces is not that of a conventional cantilevered tube. Shear lag effect in the perimeter frames of framed-tube structure will occur under the action of lateral forces. Therefore, the framed-tube structure can not fully exploit the potential stiffness and strength. This thesis is to analyze shear lag effect on the stiffness of the framed-tube structure and to discuss the behavior of the framed-tube structure under shear lag effect.
Several approximate methods of framed-tube structure and method using SAP2000 are compared each other in order to understand the shear lag effect on framed-tube structure. The shear lag effect of different structural types, such as square, circular and braced framed-tube structures is further discussed in this thesis.
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