DC 欄位 | 值 | 語言 |
dc.contributor | 翁作新 | zh-TW |
dc.contributor | 臺灣大學:土木工程學研究所 | zh-TW |
dc.contributor.author | 曾永成 | zh-TW |
dc.contributor.author | Tzeng, Yung-Cheng | en |
dc.creator | 曾永成 | zh-TW |
dc.creator | Tzeng, Yung-Cheng | en |
dc.date | 2008 | en |
dc.date.accessioned | 2010-06-30T15:43:45Z | - |
dc.date.accessioned | 2018-07-09T19:39:39Z | - |
dc.date.available | 2010-06-30T15:43:45Z | - |
dc.date.available | 2018-07-09T19:39:39Z | - |
dc.date.issued | 2008 | - |
dc.identifier.other | U0001-0910200813471200 | en |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/187594 | - |
dc.description.abstract | 為了解基樁承受側向載重時樁土互制的行為,因而於國家地震工程研究中心將模型樁(樁長150 cm,外徑10.16 cm,管壁厚0.3 cm)埋置於大型剪力盒之飽和越南砂試體中進行一系列側向樁載重試驗。驗的內容有空箱單樁及土壤中模型樁側推試驗,加載的形式有靜態及反覆荷載。反覆加載位移波型為正弦波,加載頻率為0.5、1與2 Hz,最大側向位移量為1至5 mm。應用測微錶、樁身上黏貼之應變計與土壤中之水壓計量取在不同加載情況下,樁身及土壤之反應。由空箱單樁側推試驗之彎矩-曲率關係圖得知,樁身呈現線彈性材料之行為,在不同加載條件下,樁頭勁度一致。土壤中模型樁試驗之樁頭勁度隨著位移增加而減少,隨著頻率的增加而增加。樁頭阻尼比則會隨著變位增加而增加,隨著頻率的增加而減少。由量測樁身變形數據所求得之p-y曲線變形模數會隨深度增加而增加,不同頻率試驗之p-y曲線變形模數差距會隨著深度增加而增加。樁身受側推時,超額孔隙水壓激發主要集中在樁周附近。樁移動時土壤受壓區之超額孔隙水壓力呈正值,而土壤拉張區之超額孔隙水壓力則表現出負值。當側推至最大樁頭側向位移時,在樁移動時土壤受壓區所量測到的超額孔隙水壓有減少的趨勢。 | zh-TW |
dc.description.abstract | In order to understand the behavior of soil-pile interaction for a pile foundation subjected to lateral loading, a series of lateral load tests were conducted on the instrumented model pile with a length of 1.50 m﹐an outer diameter of 101.6 mm and a wall thickness of 3 mm within a saturated Vietnam sand specimen inside the laminar shear box at National Center for Research on Earthquake Engineering (NCREE).he lateral load tests on the model pile with and without sand were performed under static and cyclic loading conditions. The input motions of cyclic loading included sinusoidal waves with amplitudes ranging from 1 mm to 5 mm and frequencies of 0.5 Hz﹐1 Hz and 2 Hz. The dial gages, strain gages and piezometers were installed at various locations to measure the responses of pile and soil under different loading conditions.he moment-curvature relation of model pile without sand specimen presented a linear-elastic behavior in the lateral load test. The stiffness of pile top displacement of model pile in the sand specimen decreases with increase of deflection at pile top and increases with frequency. The damping ratios of the model pile within the sand specimen in lateral load test increase with increase of deflection and decrease with frequency. The p-y curves were obtained based on the measured pile curvatures along the pile. The modulus of p-y curve increases with the depth of the pile﹐and the modulus of p-y curve at the same depth of the pile increases with loading frequency. It was observed that the generated excess pore water pressure mainly occurred near the pile perimeter when the model pile subjected to lateral load. The positive excess pore water pressures were generated on the compression side of pile, while on the extension side, the negative excess pore water pressures were occurred. | en |
dc.description.tableofcontents | 口試委員審定書 I謝 II要 IIIbstract IV 錄 VI目錄 VIII目錄 XII一章 前 言 1-1 研究動機與目的 1-2 研究方法與內容 1二章 文獻回顧 3-1 側向荷載樁之行為 3-2 樁土互制之行為 3-2-1 側推試驗 3-2-2 離心機試驗 5-2-3 振動台試驗 6-3 設計規範 7三章 模型樁側向荷重試驗 15-1 試驗儀器與設備 15-1-1 雙軸向多層剪力試驗盒 15-1-2 大型砂土霣落箱 15-1-3 模型鋼管樁組 16-1-4 油壓制動器 16-1-5 量測儀器 17-2 砂土試體基本物理性質 17-3 側向載重試驗前準備工作 17-3-1空箱單樁試驗 17-3-2土壤中模型樁試驗(空箱單樁試驗後接著進行) 18-4 試驗之進行 19-5 土中側推試驗完成後之後續工作 20四章 試驗結果與討論 32-1 空箱單樁側推試驗 32-1-1模型樁材料性質 32-1-2 樁頭變位行為 33-2土壤中模型樁側推試驗 34-2-1 樁頭變位行為 34-2-2 p-y曲線 36-2-3 樁周水壓的變化 39五章 結論與建議 78-1 結論 78-2 建議 79 考 文 獻 80 | en |
dc.format.extent | 3640303 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | zh-TW | en |
dc.language.iso | en_US | - |
dc.subject | 基樁 | zh-TW |
dc.subject | 側向荷載 | zh-TW |
dc.subject | 樁土互制 | zh-TW |
dc.subject | 模型樁試驗 | zh-TW |
dc.subject | pile | en |
dc.subject | lateral load | en |
dc.subject | soil-pile interaction | en |
dc.subject | model pile test | en |
dc.subject | saturated sand | en |
dc.title | 飽和砂土中樁基受反覆側向荷重之行為 | zh-TW |
dc.title | Behavior of Model Pile in Saturated Sand Subjected to Cyclic Lateral Load | en |
dc.type | thesis | en |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/187594/1/ntu-97-R95521104-1.pdf | - |
item.openairecristype | http://purl.org/coar/resource_type/c_46ec | - |
item.openairetype | thesis | - |
item.languageiso639-1 | en_US | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.fulltext | with fulltext | - |
顯示於: | 土木工程學系
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