DC 欄位 值 語言 DC.contributor 土木工程學系 zh_TW DC.creator 蘇正中 zh_TW DC.creator zhen-Cho Shu en_US dc.date.accessioned 2002-1-18T07:39:07Z dc.date.available 2002-1-18T07:39:07Z dc.date.issued 2002 dc.identifier.uri http://ir.lib.ncu.edu.tw:88/thesis/view_etd.asp?URN=87322063 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 互層地層為兩種大地材料交互堆疊而成的層狀地質構造，常見於台 灣、西部麓山帶。影響互層地層承載力的因素甚多，為了釐清互層地層的 承載行為，本文擬以「傾斜互層地層之承載力分析」為題進行研究。 以傾斜互層地層作為前提，針對互層地層的三個主要參數進行研究： 1.基礎位置、2.互層傾角、3.互層厚度，研究這三個參數對互層地層承載力 的影響。透過FLAC 程式的協助進行數值模擬分析，並將分析結果進行討 論。 研究結果顯示，對於基礎位置而言，當週寬比（週期互層厚度與基礎 寬度之比值）約小於1 時，在同一互層傾角條件下，基礎不論置於互層地 層地表上之何處，其承載力都會非常接近、相差不大。這是因為此時的基 礎寬度約足以涵蓋住一整個互層厚度，使兩種互層材料個別的強度特性被 綜合所致；而當週寬比約大於1 時，在同一互層傾角條件下，此時隨著基 礎位置的改變，其承載力已開始會出現週期性的起伏變化。這是因為此時 基礎寬度已無法涵蓋住一整個互層厚度，因此基礎放置的位置與承載力之 大小關係相當密切。對於互層傾角而言，當週寬比約小於1 時，隨著互層 傾角的增加，各基礎位置的承載力亦會跟著增加；當週寬比約大於1 時， 隨著互層傾角的增加，各基礎位置的承載力變化將變得更複雜。整體而 言，隨著互層厚度增大，基礎位置的週期承載特性會越明顯，互層傾角的 承載行為會越複雜。 zh_TW dc.description.abstract Interlayered formation is a kind of layered formations formed by two geological materials storing up mutually. Three major parameters will affect the bearing capacity of interlayered formation, including positions of footing, interlayered inclined angle, and thickness of each interlayer. In this thesis, the bearing capacity of inclined interlayered formation will be analyzed by using FLAC program to find how the three parameters could affect it. The FLAC analysis results as follows. With regard to positions of footing, if the cycle-width ratio is smaller than 1, as long as in the same interlayered inclined angle, the position of footing won’t affect the bearing capacity. If the cycle-width ratio is larger than 1, the bearing capacity will change periodically along with the movement of footing. With regard to interlayered inclined angle, if the cycle-width ratio is smaller than 1, the bearing capacity of any footing position will increase while interlayered inclined angle increases. If the cycle-width ratio is larger than 1, the bearing capacity behavior of any footing position will be more complex. In conclusion, if thickness of each interlayer is increasing, the cycling bearing capacity characteristic of different positions of footing will become much more obvious, and the bearing capacity behavior of different interlayered inclined angle will become complex en_US DC.subject 互層地層 zh_TW DC.subject 承載力 zh_TW DC.subject 基礎位置 zh_TW DC.subject 互層傾角 zh_TW DC.subject 互層厚度 zh_TW DC.subject 週寬比 zh_TW DC.subject FLAC zh_TW DC.subject interlayered formation en_US DC.subject bearing capacity en_US DC.subject position of footing en_US DC.subject interlayered inclined angle en_US DC.subject thickness of interlayer en_US DC.subject cycle-widthratio en_US DC.subject FLAC en_US DC.title 傾斜互層地層之承載力分析 zh_TW dc.language.iso zh-TW zh-TW DC.type 博碩士論文 zh_TW DC.type thesis en_US DC.publisher National Central University en_US