動力夯實改良模擬施工案例介紹

An Introduction to the Pilot Test of Dynamic Compaction

吳偉康(W. K. Wu) ； 吳建閩(C. M. Wu) ； 吳博凱(P. K. Wu) ； 葉嘉鎮(C. C. Yeh) ； 郭天成(T. C. Kao)

《地工技術》 66期 (1998/04) Pp. 37-46

https://doi.org/10.30140/SG.199804.0003

摘要

台塑六輕石化工業區海豐區以動力夯實工法進行地質改良，為尋找最適當的施工方法分別以落距、錘擊間距、夯實能量等不同組合方式進行五種模擬施工。由各種模擬施工之成效檢驗結果發現，其有效的改良深度在地表下9－11公尺範圍內，而改良效果則以施加能量最大的TypeⅢ區最佳，TypeⅠ區次之，且模擬施工的成效與國外相關經驗比較，大致相符。在夯實能量相當的TypeⅡ、TypeⅣ及TypeⅤ區由於規劃之間距及單點錘擊不同，亦產生不同的改良效果，顯示動力夯實工法的施工規劃甚為重要。

關鍵字

地盤改良 ； 動力夯實

並列摘要

Dynamic compaction technique has been used to improve the soil condition in FPG Sixth Cracking Project. Therefore, 5 patterns of dynamic compaction pilot test have been executed on Hi-Feng site to find the best combination of the drop height, grid spacing and applied energy. The verification results indicate that the effective improvement depth is between 9 and 11 meters. Moreover, the best improvement result is that of Type III which has the greatest applied energy. And Type I comes in second. These results correspond well with those obtained from foreign experience. The improvement results of Type II, Type IV and Type V, which have similar applied energy, are different due to their grid spacing, drop height, and numbers of drops. The above results clearly show that the construction planning is very important to dynamic compaction.

並列關鍵字

Soil improvement ； Dynamic compaction