Quantitative study of effect of structural types and layout patterns on the vibration periods

• Main Authors: Hung-Yu Liu, 劉泓佑
• Other Authors: Chih-Peng Yu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/8zkadc

碩士 === 國立中興大學 === 土木工程學系所 === 107 === Despite that the natural frequency of a building type of structure is clearly affected by various factors including material types, structural layouts, story and building heights, and structural systems as well. Taiwan’s current specifications for seismic design of buildings only provide a simple formula to predict building’s fundamental period solely based on the height of the building. Such simplification leads to rough estimates yet it is apparently inappropriate when applying to indicate more precise referenced values for buildings with various construction layouts, materials and structural characteristics. This thesis work aims to explore the potential factors which affect the natural frequencies of typical terraced-type and apartment-type houses constructed around residential area in Taiwan. Numerical studies of selected building models are carried out using Etabs in which structural dimensions, proportioning and material properties are designated based on realistic data corresponding to typical residential houses. According to the obtained dynamic data, the variation of vibration periods with the selected factors can be acquired and serves as the database for the assessment of the relative significance of each factor in affecting the vibration periods. Consequently, this thesis proposes an effective methodology which can be used to construct period-formulas in a straight-forward format. And the establishment of such period-formulas can potentially provide a useful tool in determining the possible range of the predominant periods/frequencies for the studied structures.