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題名 | 樁基礎振動傳播影響之探討=Transmission Effects of Excitation on Pile Foundation |
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作者 | 蔡錦松; 劉福鎮; 吳育豪; Tsai, Jiin-song; Liu, Fu-chen; Wu, Yu-hau; |
期刊 | 成功大學學報 |
出版日期 | 20001100 |
卷期 | 35(科技.醫學篇) 民89.11 |
頁次 | 頁11-26 |
分類號 | 441.17 |
語文 | chi |
關鍵詞 | 樁振源; 地表振源; 振波衰減; Source on pile; Surface source; Vibration degradation; |
中文摘要 | 本研究目的在探討經由樁基下方傳播之振動,通過深層土壤承載層傅遞至遠方樁基之振動傳播現象。藉由小比例尺現場試驗,研究樁振源產生之振波對鄰近樁基之影響。試驗內容包含:(1)地表振源與地表受波端(2)樁振源與地表受波端(3)地表振源與樁基受波端(4)樁振源與樁基受波端等四種情形。從樁振源與地表受波端試驗結果顯示,與常用打樁振動衰減公式所預測之衰減趨勢相似,由樁基受波端之試驗結果顯示,樁基可減小振動。而由樁振源試驗結果得知,「樁基礎」比「地表淺基礎」有較佳之振波傳遞效果,即樁振源在相同打擊能量下,會使得鄰近上壤受到較地表振源為大的振動影響。 |
英文摘要 | This research is to study the ground responses of excitation generated and transmitted in between the pile foundations embedded in deep soilmedium. The transmission effects are simulated by a series of scaled model tests installed in open free field. Vibration responses of the tests are measured by using receiver sensors installed at a close proximity and at a distance to the source. Four cases are considered in the tests: (1)surface source and surface receivers, (2) source on pile and surface receivers, (3) surface source and receivers on piles, and (4) source on pileand receivers on piles. Experimental results of vibration degradation show a very good agreement with the predictions based on previous studies in the literatures. The shown data also indicate that scale effect ofthe present model test is of an in significant level. Comparing the datameasured in all cases, the vibration responses of pile are less than the ground responses when a constant source is given. This means thatinterface of pile and soil filters out certain amount of incident wave vibration. On the other hand, data show that vibration responses induced by source generated on top of pile are larger than those induced by sourceon the ground surface. For the case of source on pile, this research concludes that the vibration transmission effects are enlarge domparing to the case of surface source with a half-space field. |
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