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題 名 | 有限元素分析應用於大地問題之安全性衡量=Safety Measures for Finite Element Analysis Applied to Geotechnical Problems |
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作 者 | 鄭富書; 黃國品; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 10:2 1998.06[民87.06] |
頁 次 | 頁279-289 |
分類號 | 441.103 |
關鍵詞 | 安全係數; 有限元素分析; 極限平衡分析; Factor of safety; Finite element analysis; Limit equilibrium analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 大地工程如邊坡與基礎等問題,傳統上多以極限平衡法分析。如需考量材料變形 及時間因素之影響時,有限元素法較為適用,唯其無法提供安全係數衡量。本文由直觀之物 理意義出發,研訂合適的安全係數衡量,以補傳統有限元素法安全衡量之不足;建立及評估 七種安全性衡量方法之特性,發現有三種方法較為適用。由危險滑動方向之綜合使用,可決 定邊坡最危險滑動面的位置及形狀。此三方法應用於基礎問題分析,可預測基礎之極限承載 力;其預測值比極限平衡法所得為保守。 |
英文摘要 | This paper aims at developing adequate measures to evaluate the stability of a geotechnical system analyzed by finite element method. A total of seven safety measures was developed and evaluated. Three of them were found to be adequate to fulfill the needs of finite element analyses and are recommended. Accordingly, an improved technique for determining the geometry and the location of the most critical failure surface of a slope is proposed. These three safety measures were then applied to predict the ultimate bearing capacity of a foundation. The predicted ultimate bearing capacity is found to be conservative when compared with that made by the limit equilibrium method. |
本系統中英文摘要資訊取自各篇刊載內容。