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題 名 | 簡諧外力作用下剛體之滑動--晃動行動=Sliding-Rocking Response of Blocks Subjected to Base Harmonic Excitations |
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作 者 | 蔡錦松; 王文清; 林明諭; 李俊儀; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 9:1 1997.03[民86.03] |
頁 次 | 頁97-103 |
分類號 | 441.571 |
關鍵詞 | 滑動-晃動行為; 接觸彈簧; 不連續分析; Sliding-rocking; Contact spring; Discontinuous deformation analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 本文旨由簡單塊體模擬滑動式隔震結構受地表簡諧外力作用下之滑動--晃動行為。研究採不連續元素方法進行數值模擬。文中首先提出模擬塊體碰撞接觸時接觸彈簧係數之簡易推斷方法,並以之應用於分析塊體單純滑動及晃動,進而分析地表簡諧運動下伴隨滑動之晃動反應。結果顯示。結構高寬比對晃動行為影響最大。而摩擦界面性質,在小幅晃動時,並無顯著影響。由簡諧外力之振動反應顯示,無滑動晃動最大傾角會有如共振現象的尖峰值出現,且隨高寬比增加,尖峰將趨低頻區。在伴隨滑動情況下之晃動,其尖峰值將趨向更低頻率。 |
英文摘要 | The paper presents a study on the problem of sliding-rocking behavior of sliding blocks. The discontinuous deformation analysis is adopted for numerical modeling. A simple method is proposed to determine the stiffness of contact spring between two blocks. Results indicate that the height-width ratio of structure is the most important factor that influences the responses of block under harmonic excitation. The friction between blocks has little influence on the structural response under low-amplitude rocking. For rocking without sliding, resonant peak of response spectrum shifts to a low frequency as the height-width ratio increases. For the sliding-rocking condition, the resonant peak is close to another lower frequency. |
本系統中英文摘要資訊取自各篇刊載內容。