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Student Number 92322032
Author I-Min Yu(游以民)
Author's Email Address 92322032@cc.ncu.edu.tw
Statistics This thesis had been viewed 1715 times. Download 1213 times.
Department Civil Engineering
Year 2004
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Pile of vibration suppression and behavior of the attenuation of wave propagation around model pile in the soil
Date of Defense 2005-06-30
Page Count 99
Keyword
  • model pile test
  • pile of vibration suppression
  • spring
  • stiffness ratio
  • Abstract Abstract
    Vibration caused by transportation vehicles pass through viaduct or bridge may be transmitted from piers to pile foundations. This vibration may generate waves in deep layer. The wave propagation from the bearing stratum may cause damages to the adjacent structures or high-tech production facilities. The purpose of this research is to investigate the wave propagation in soil layers and the method for reducing these vibrations.
    To reduce the vibration that may cause some detrimental effects to the residences, adjacent structures or high-tech production facilities, this research designed two model piles. One of the model piles, a spring is set on the pile head as the vibration suppression, and the other one is the original pile with no treatment. A series of model pile tests were carried out in laboratory to investigate the effects of vibration mitigation, behavior of the attenuation of wave propagation around model pile in the soil and the relationships among vertical displacement of model pile, impact energy and
    From the results of experiments, it was revealed that the impact energy generated vibrations by means of pile tip and transmitted to the bearing stratum then generated waves. If the waves transmitted to the interface layer between the bearing stratum and the loose sand stratum, parts of energy would be transmitted outward by the interface layer. For the two kinds of model piles, the behaviors of attenuation of wave propagation approach to a similar curve and attenuate in proportion of distance. For the stiffness ratio lower than 1.6, the vibration energy generated by the pile tip of vibration suppression is decreased to 50% of that generated by the original model pile. It is revealed also that the wave propagation transmitted by bearing stratum and the interface layer had predominant vibration mitigation.
    Table of Content 目錄
    中文摘要-----------------------------------------------------------------------------I
    英文摘要---------------------------------------------------------------------II
    目錄------------------------------------------------------------------------III
    照片目錄---------------------------------------------------------------------VI
    表目錄----------------------------------------------------------------------VII
    圖目錄---------------------------------------------------------------------VIII
    符號說明--------------------------------------------------------------------XII
    第一章 緒論-------------------------------------------------------------------1
      1-1 研究動機與目的--------------------------------------------------------1
      1-2 研究方法--------------------------------------------------------------2
      1-3 論文內容--------------------------------------------------------------3
    第二章 文獻回顧---------------------------------------------------------------5
      2-1 土壤振波理論----------------------------------------------------------5
        2-1-1 應力波傳種類與行為-----------------------------------------------6
        2-1-2 土壤振波衰減模式-------------------------------------------------8
      2-2 樁振動理論------------------------------------------------------------9
        2-2-1 打樁振動傳播形式------------------------------------------------10
      2-3 減振之相關工法-------------------------------------------------------13
        2-3-1 隔振溝與隔振壁工法----------------------------------------------13
        2-3-2 阻波塊(WIB)及蜂窩式阻波塊(HWIB)工法-------------------------14
        2-3-3 地盤改良工法----------------------------------------------------16
        2-3-4 數值分析之複合式隔振工法----------------------------------------17
        2-3-5 衝擊荷重在基礎上之減振------------------------------------------18
      2-4 機械、設備、儀器等之容許振動範圍-------------------------------------18
    第三章 試驗設備與試驗方法--------------------------------------------------- 37
      3-1試驗土樣之基本物理性質----------------------------------------------- 37
        3-1-1 最大乾單位重試驗----------------------------------------------- 37
        3-1-2 最小乾單位重試驗----------------------------------------------- 38
      3-2 試體相對密度之標定-------------------------------------------------- 39
        3-2-1 試驗設備------------------------------------------------------- 39
        3-2-2 試驗步驟------------------------------------------------------- 39
      3-3 原模型基樁之振波性質與樁周土壤中振波之衰減行為---------------------- 40
        3-3-1 模型樁--------------------------------------------------------- 41
        3-3-2 試驗儀器設備--------------------------------------------------- 41
        3-3-3 試體製作------------------------------------------------------- 43
        3-3-4 試驗步驟------------------------------------------------------- 43
      3-4 減振基樁之振波性質與樁周土壤中振波之衰減行為------------------------ 44
        3-4-1 試驗步驟------------------------------------------------------- 44
      3-5 試驗規劃------------------------------------------------------------45
    第四章 試驗結果與分析------------------------------------------------------- 58
      4-1 承載層之邊界效應---------------------------------------------------- 58
      4-2 承載層之振波性質-----------------------------------------------------59
        4-2-1 不同承載條件下原模型基樁之振波性質------------------------------60
        4-2-2 減振基樁於承載層之振波性質--------------------------------------61
      4-3 樁周土壤中振波之衰減行為---------------------------------------------62
        4-3-1 原模型基樁樁周土壤中振波之衰減行為------------------------------62
        4-3-2 減振基樁樁周土壤中振波之衰減行為--------------------------------63
        4-3-3 減振基樁之振波衰減效果------------------------------------------64
      4-4 減振基樁之垂直位移---------------------------------------------------66
    第五章 結論與建議------------------------------------------------------------93
      5-1 結論-----------------------------------------------------------------93
      5-2 建議-----------------------------------------------------------------94
    參考文獻---------------------------------------------------------------------95
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    Advisor
  • Huei-Wen Chang(張惠文)
  • Files
  • 92322032.pdf
  • approve immediately
    Date of Submission 2005-07-14

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