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頁籤選單縮合
題名 | 颱風時期防波堤之可靠度分析=Reliability Analysis of Breakwaters during Typhoon Period |
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作者 | 林國峰; 何秉均; | 書刊名 | 農業工程學報 |
卷期 | 45:2 1999.06[民88.06] |
頁次 | 頁11-20 |
分類號 | 443.31 |
關鍵詞 | 可靠度分析; 防波堤; 滑動; 傾覆; Reliability analysis; Breakwater; Sliding; Overturning; |
語文 | 中文(Chinese) |
中文摘要 | 構成港灣工程中最重要的結構物為防波堤,在設計時,常以若干年的迴歸週期推 算所得的波浪高,計算其防波堤的安全性。然而計算所得之安全性仍不足以反應防波堤的實 際安全狀況。本文於是引進可靠度之概念以分析臺北港颱風時期防波堤滑動及傾覆安全性。 由研究的結果可知,颱風時期最大波高平均值逐漸增大時,滑動可靠度及傾覆可靠度均減小 。颱風產生之最大波高平均值小於 5m 時,傾覆可靠度大於滑動可靠度;當最大波高平均值 逐漸加大時,傾覆可靠度將逐漸變小,亦即波浪愈大時,防波堤翻轉之可能性會迅速增加。 |
英文摘要 | Breakwaters are the most important structure in a port. The traditional method of safety factor is often used in the safety analysis of breakwaters. However the safety factor cannot reflect the actual safety of a breakwater. In this paper the concept of reliability is introduced to analyze the safety of breakwaters of the Taipei harbor during typhoon period. Actual data of waves caused by typhoons are used herein. The results show that the reliability against sliding or overturning decreases with increasing typhoon wave height. It is also found that the reliability against overturning is greater than that against sliding when the mean wave height is less than 5 meters. When the wave height is greater than 5 meters, the reliability against overturning is smaller than that against sliding and reduces rapidly with the increasing wave height. |
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