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題 名 | 動力夯實施工引致之地盤振動特性=Ground Vibration Due to Dynamic Compaction |
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作 者 | 黃俊鴻; 張惠文; 杜東岳; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 15:3 2003.09[民92.09] |
頁 次 | 頁567-578 |
分類號 | 441.103 |
關鍵詞 | 動力夯實; 地盤振動; 衰減; 隔振溝; 富氏譜; 反應譜; Dynamic compaction; Ground vibration; Attenuation; Trench; Fourier spectrum; Response spectrum; |
語 文 | 中文(Chinese) |
中文摘要 | 本文在臺灣中部一水力回填海埔地工業區場址,規劃一序列動力夯實 (Dynamic Compaction,DC) 施工所引致之地表振動量測研究。研究內容包括標準與不同夯擊能量下之地表振動量測,以及設有淺層隔振溝之地表振動量測。量測結果之分析除探討不同方向之地動波形與地動峰值隨距離之衰減特性,亦對地動記錄進行詳細之頻譜分析,包括富氏譜與反應譜分析。同時,也針對不同夯擊能量與淺層隔振溝對地動特性之影響進行初步之評估。最後結合建築物之振動管制準則與地動峰值隨距離之衰減關係,初步推估DC施工離建築物之安全距離,並建議DC施工引致之地盤振動設計反應譜,供進一步分析DC施工對建築物之影響。 |
英文摘要 | A series of ground vibration measurements were carried out during the executions of dynamic compaction (DC) at an industrial site. This site is near the seashore of central Taiwan and was a reclaimed land formed by hydraulic fill. The measured vibrations included those induced by standard and different tamping energies of DC. The vibrations of ground with several shallow trenches were also measured. The analyzed data was used to summarize the characteristics of waveforms and attenuations of amplitude with distance in different directions. The Fourier spectra and response spectra of vibration records were presented. A preliminary evaluation of the effects on the ground vibrations by tamping energy and shallow trench was also given. Based on the vibration criteria of local buildings and the relation of vibration attenuation with distance, the method to determine safe distances during DC construction for the various structures was suggested. The design response spectra of DC vibrations were also proposed for using modal superposition method to more accurately determine the safe construction distances. This work can provide a valuable base for evaluating the effects of DC vibration on various structures. |
本系統中英文摘要資訊取自各篇刊載內容。