本文使用ETABS 8.5.4版分析一個實際工程案例,並檢核其部份長跨距構材的強度與撓度是否合於設計規範要求。 本研究針對部分構材利用強度設計法(Load and Resistance Factor Design)以及ACI規範檢核,探討本案例中部份構材在設計載重下是否能符合撓度與強度之規定。此外,討論長跨距構材若加上足夠側向支撐是否會有側向扭轉挫屈的問題。本文也使用ETABS進行非線性側推分析,目的是對本案例建築物受地震力下的極限承載力做初步評估,並且可以得到側向載重-位移曲線,塑性鉸產生的位置。 關鍵字:ETABS、強度設計法、非線性側推分析、ACI規範、側向扭 轉挫屈
In this research, the writer uses ETABS 8.5.4 version to analyze a designed building, and check the strength and deformations of its long-span members by design code and specification. Selected members are checked by LRFD (Load and Resistance Factor Design) and ACI specification. If members of the building does not fit the requirements of code, then redesign will be suggested. In addition, this study also checks the lateral torsional buckling of long-span members to see if they equipped enough lateral supports and torsional resistance. The writer uses ETABS nonlinear pushover analysis to evaluate the ultimate strength of the building under seismic forces. The pushover analysis can indicate the locations of plastic hinges and gets the load-deflection curves to estimate the lateral resistance of the building. Keywords: ETABS, LRFD, Pushover analysis, ACI code, Lateral torsional buckling