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題名 | 彈簧防振設備的耐震補強(2)--工程應用之簡化設計法,以醫院建築為例=Seismic Retrofit of Spring-Supported Machines(2)--A Simplified Design Method for Hospital Applications |
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作者 | 姚昭智; 吳嘉栩; | 書刊名 | 建築學報 |
卷期 | 25 1998.06[民87.06] |
頁次 | 頁1-14 |
分類號 | 441.571 |
關鍵詞 | 防振設備; 耐震評估; 工程設計; 共振倍率係數; Base-isolated equipments; Seismic evaluation; Engineering design; Resonance amplification factor; |
語文 | 中文(Chinese) |
中文摘要 | 本文延續上文的研究結果,探討在工程應用上的簡化設計方法。各項研究內容如 下: 一、設計地震力: 藉由 1989 年 Loma Prieta 強震記錄的資料比較各國非結構物耐震 規範中的共振倍率放大係數的合理性,以決定一合適之設備地震力計算公式,作為將來設置 重要設備物時,耐震能力評估準則的參考。二、震動量評估方面:本文以電腦模擬的方式, 分析不同週期的設備在不同高寬比與不同偏心情況下,受到第三類地盤振動的反應譜攻擊時 ,所會產生變形量之簡易預估法。同時找出防振設備自振頻率的簡易估算法,以方便工程界 應用。三、補強流程方面:針對防振設備受地震力攻擊時的運動狀況及破壞模式,提出最適 當之補強建議與流程,並評估補強成效。 |
英文摘要 | This paper extends finding from the last paper and tries to propose a simplified method for engineering application. Major contents are:(1)Design force:By analyzing 1989 Loma Prieta earthquake records and comparing different earthquake codes, authors proposed an empirical resonance amplification factor. This factor can be used together with other factors to assess seismic forces induced in spring- supported machines if the systems' natural frequencies come close to those of building's. (2)Vibration prediction: A simplified method to predict the largest vibration displacement at springs is proposed. Computer models of different natural frequencies, eccentricity, and height-to-width ratio were subjected to excitation of a response spectrum from the third soil type. An empirical formula is thus concluded from regression analysis. Also, a simplified method to calculate the fundamental frequency of a spring- supported system is derived from parametric studies.(3)Retrofit procedure: Based on the proposed failure modes and finding from experiments, authors proposed a design procedure and evaluation method for engineering application. |
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