Ground Vibration During Gravel Pile Construction

礫石樁施工引致之地盤振動

黃俊鴻(Jin-Hung Hwang) ； 杜東岳(Tung-Yueh Tu)

《Journal of Marine Science and Technology》 10卷1期 (2002/06) Pp. 36-46

https://doi.org/10.6119/JMST.200206_10(1).0006

摘要

本文在台灣中部某一代表性之水力回填工業區場址，成功地進行礫石樁施工引致之地盤振動量測，並以振動波形，富氏譜與結構反應譜探討此種施工之地盤振動特性。同時也整理統計出最大地表速度與加速度隨距離衰減之關係。結合地動量衰減關係與建築物振動管制準則，本文建議了一種簡單決定礫石樁施工對建築物影響安全距離之經驗評估法。本文也建議了此種施工振動之設計反應譜，可供工程師使用結構動力分析中常用之反應譜分析法，以更準確地評估礫石樁施工之安全距離。

並列摘要

This investigation performs a field measurement of ground vibration due to gravel pile construction at a hydraulic-filled reclamation land. The ground vibrations were characterized by wave form, Fourier spectrum and response spectrum. The attenuation relation between both peak ground velocity and acceleration with distance was also derived from the measured data. An empirical method for evaluating the safe construction distance to adjacent building structures was presented based on the attenuation relation and a building vibration criterion. Vibration response spectra were also suggested for use with the spectral analysis method to determine more accurately the safe construction distance.

並列關鍵字

Ground vibration ； gravel pile ； attenuation ； spectral analysis