就集集地震之土石壩行為探討國內土石壩安全評估方法之妥當性

A Preliminary Review on the Seismic Safety Assessment Method for Earth Dam Based on Chi-Chi Earthquake Experience

陳錦清(Jin-Ching Chern) ； 張森源(Sen-Yuan Chang)

《地工技術》 77期 (2000/02) Pp. 109-117

https://doi.org/10.30140/SG.200002.0008

摘要

本文利用國內外土石壩受地震侵襲之案例資料及國內主要大壩地震安全評估之結果，檢討國內土石壩之抗震能力及目前採用之地震安全評估方法之可靠性。921集集地震對土石壩影響之案例資料顯示，施工良好之滾壓土石壩可承受0.6g最大加速度之地震尚不致於發生嚴重之損壞。目前國內採用之地震安全評估方法，對壩體動態反應與壩體沉陷亦能獲得合理之估計。

關鍵字

土石壩 ； 地震安全評估 ； 應變潛能 ； 沉陷變形

並列摘要

Based on the case histories of earthquake performance of earth dam collected from Taiwan and abroad, a preliminary review on the seismic performance of earth dam in Taiwan and the reliability of the seismic safety assessment methodology adopted was made. The effects of 921 Chi-chi earthquake on earth dams show that well-constructed earth dam can resist strong shaking with a(subscript max) as high as 0.6g without severe damage. The methodology of seismic safety assessment adopted can estimate the dynamic response and the final settlement of dambody reasonably well.

並列關鍵字

earth dam ； seismic safety assessment ； strain potential ； deformation and settlement