束型框筒結構力學參數分析研究

Abstract

束型框筒結構為框筒結構的一種改良型結構，在高樓建築中已有實際應用。框筒結構主要以外圍密集的柱與深梁建構。在梁柱構件側向勁度較小的情況下，會產生剪力延遲現象。剪力延遲現象會造成結構物的勁度無法完全發揮。超高樓結構中，結構物控制外力主要為風力載重，因此本文主要在探討風力載重下，超高樓束型框筒結構的剪力延遲效應。 在案例分析中，以SAP2000為主要的分析程式，並以幾個結構桿件變更作為測試，討論案例模擬成果。

Bundled-Tube Structure has been widely accepted by structural engineers in design of high-rise buildings. Since frame-tube structure is formed by closely spaced perimeter columns that are connected by deep spandrel beams, shear lag effect appears if the stiffness of spandol beam is small. Tubalar structure can not fully exploit the potential stiffness and strength due to shear lag effect. This thesis is to analyze shear lag effect on behavior of bundled-tube structure under wind load. To do this, program SAP2000 is used to perform the analysis with the parameter changes which are the change of stiffness of spandol beams and cross-section of column.