震災後基礎之修復與補強案例探討

Case Study of Foundation Rehabilitation after Earthquake

廖瑞堂(Jui-Tang Liao) ； 潘竹旺(C. W. Pan) ； 俞清瀚(Ching-Han Yu) ； 黃富國(Fu-Kuo Huang)

《地工技術》 81期 (2000/10) Pp. 105-120

https://doi.org/10.30140/SG.200010.0008

摘要

921集集大地震後，災區部份建築物發生下陷傾斜，但上部結構大致良好的個案，該部份個案已進行建築物基礎之修復補強工作，以恢復其使用機能。基礎修復補強工法以採千斤頂頂升工法及灌漿工法最為常用，本文以頂升工法及灌漿工法各3處個案為例，說明其施工經過、成效及發生的若干問題，並比較該二種工法之優缺點及適用性。由案例探討可知成效良好的個案，通常都有周詳的事前調查及良好的施工管理，至於成效不佳或工期延宕甚久的個案，則大都缺乏良好的調查、計畫及施工管理，台灣地區基礎修復補強的經驗仍十分有限，且存在諸多問題，有待工程界共同努力加以改善。

關鍵字

基礎 ； 修復補強 ； 扶正 ； 頂升工法 ； 灌漿工法

並列摘要

Lots of buildings settled and tilted in the disaster areas attacked by the Chi-Chi earthquake. For the damaged buildings with stable upper structure, the foundation rehabilitation was performed to recover its original function. The underpinning method and grouting method were used most commonly for the foundation rehabilitation. A total of 3 remedial cases for each remedial method were studied in this paper and the construction processes, rehabilitation effectiveness and the problem encountered during construction were investigated and evaluated. As a result, the comparison of advantage/disadvantage and applicability between two methods are proposed. Results of this study indicate as the detail investigation prior to construction and the proper construction management were conducted during rehabilitation, the damaged foundation can be retrofitted effectively within an appropriate schedule; otherwise, the effective rehabilitation can not be reached and the construction duration will be postponed. Because the local experiences of foundation rehabilitation are limited in Taiwan and some major problems do not resolved yet, it is suggested that the techniques and abilities of foundation rehabilitation should be improved by the engineers with greater efforts.

並列關鍵字

foundation ； rehabilitation ； upright ； underpinning method ； grouting method