液化風險與土壤改良評估案例

A case Study of Liquefaction Risk and Ground Improvement Assessment

葉文謙(W. C. Yeh) ； 吳建閩(C. M. Wu) ； 鍾毓東(Y. T. Chung) ； 余明山(M. S. Yu)

《地工技術》 67期 (1998/06) Pp. 43-54

https://doi.org/10.30140/SG.199806.0003

摘要

傳統液化潛能分析多以液化及不會液化二分法結果，做為評估是否需進行抗液化措施之依據，對於設計地震下之液化危害程度則未能瞭解，因此抗液化對策常採用較保守之設計，導致資源之浪費。本文嘗試以液化危害觀點，引進日本及中國大陸行之有年的液化危害性指數觀念，對液化後可能之損壞程度提出一套量化分析的模式，並以實例說明提供地工同業參考，以期能為日後液化分析工作引進不同思考方向。

關鍵字

液化潛能 ； 液化危害性指數 ； 液化風險 ； 土壤改良

並列摘要

There are two kinds of results, ”Liquefied” and ”Non-liquefied”, for the conventional liquefaction analysis of sandy deposits. Usually, the liquefied soil shall be improved to prevent the damage or failure induced by the large earthquake. Even the analysis had been done, however, the scale of damage or risk are still difficult to be recognized. Therefore the over-design of ground improvement works always happen. This paper tries to present a method of further liquefaction analysis which can quantify the degree of damage and indicate the risk after the liquefaction occurred, i.e. the liquefaction risk index concept, which has been used in Japan and Mainland China for several years. A case study is also illustrated to describe the liquefaction risk index concept in the paper.

並列關鍵字

Liquefaction ； Liquefaction Risk Index ； Ground Improvement