| DC 欄位 |
值 |
語言 |
| DC.contributor | 土木工程學系 | zh_TW |
| DC.creator | 張志鵬 | zh_TW |
| DC.creator | Zhi-peng Zhang | en_US |
| dc.date.accessioned | 2012-8-28T07:39:07Z | |
| dc.date.available | 2012-8-28T07:39:07Z | |
| dc.date.issued | 2012 | |
| dc.identifier.uri | http://ir.lib.ncu.edu.tw:444/thesis/view_etd.asp?URN=983202032 | |
| dc.contributor.department | 土木工程學系 | zh_TW |
| DC.description | 國立中央大學 | zh_TW |
| DC.description | National Central University | en_US |
| dc.description.abstract | 現今的港灣碼頭多設置於人工回填地，但此種地盤飽和度高且鬆
軟，受震時容易產生土壤液化的現象，當液化發生時，擋土的沉箱結
構受到慣性力的影響朝海側位移，使碼頭後方的背填土產生沉陷、滑
動等現象，造成其後線作業區的損壞因而長期停用，導致龐大的經濟
損失。本研究以離心模型試驗模擬重力式沉箱碼頭的受震反應，並探
討其振動模式對於沉箱碼頭系統的沉箱–土壤互制行為的影響，再以
改良後的背填土進行試驗，觀察其對沉箱碼頭系統受震反應的影響。
本研究將縮尺後的沉箱碼頭模型置於試驗箱，以80 倍純水黏滯
度的黏滯液體模擬孔隙水，在80g 的離心力場下進行試驗，並在試體
內部配置加速度計、孔隙水壓計、土壓力計等量測各物理量的變化，
試體外部則以線性差動變壓器（LVDT）量測其變位。
試驗結果顯示：(1)以黏滯液體代替水作為飽和溶液，可以有效
的模擬出更真實的動態反應，例如孔隙水壓的激發與消散等；(2)改
良後的試體會阻斷基礎砂層的排水路徑，在振動時會使基礎層的超額
孔隙水壓難以消散，因而容易液化；(3)背填土經過改良後可以有效
降低其沉陷量，改良區域沉陷量較未改良相比僅有四分之一；(4)經
過改良的試體，受到旋轉模態影響較大，其旋轉中心有朝海側發展的
趨勢。
| zh_TW |
| dc.description.abstract | The harbor often set in the artificial fill ground. But such of this sites
have high saturation and loose sand. So when it shake, the soil will
damage by liquefaction easily. Liquefaction will make the quay wall
move toward the sea side by inertial force, and settlement of the backfill
behind the quay wall. So that the area of working will out of service long
time, induce huge disadvantage of economic.
In this research use the centrifuge model simulate the caisson type
quay wall’s response during earthquake. And discuss the effect about the
soil-structure inter action from mode of shaking. Then using the
reformation soil replace the loose backfill and observe the result of the
response during earthquake.
The conclusion is: (1)using viscous fluid replacing water is a better
approach to simulate the real response of quay wall during earthquake
(2)The reformation soil will cut the path of drainage of the void fluid of
the foundation soil under the quay wall. (3)The reformation backfill will
reduce the settlement effectively (4)The rotation mode of shaking will
affect the test with reformation backfill more than the test without
reformation backfill.
| en_US |
| DC.subject | 背填土改良 | zh_TW |
| DC.subject | 沉箱振動模態 | zh_TW |
| DC.subject | 主頻 | zh_TW |
| DC.subject | 沉箱旋轉中心 | zh_TW |
| DC.subject | 沉箱式碼頭 | zh_TW |
| DC.subject | 超額孔隙水壓 | zh_TW |
| DC.subject | rotation center of quay wall | en_US |
| DC.subject | predominant frequency | en_US |
| DC.subject | caisson type quay wall | en_US |
| DC.subject | excess pore pressure | en_US |
| DC.subject | vibration modes of quay wall | en_US |
| DC.subject | reformation backfill soil | en_US |
| DC.title | 以離心模型試驗探討沉箱碼頭之受震反應及復建補強對策 | zh_TW |
| dc.language.iso | zh-TW | zh-TW |
| DC.title | Centrifuge modeling on seismic responses of caisson type quay wall with reformation backfill during earthquake | en_US |
| DC.type | 博碩士論文 | zh_TW |
| DC.type | thesis | en_US |
| DC.publisher | National Central University | en_US |