三維分析加勁土堤受側向力之研究｜國立臺灣科技大學博碩士論文系統

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研究生：	張瑞勳 RUEI-SYUN JHANG
論文名稱：	三維分析加勁土堤受側向力之研究 Three-Dimensional Finite Element Modeling of Geosynthetic-Reinforced Soil Structure subject to Lateral Loadings
指導教授：	鄧福宸 Fu-chen Teng 楊國鑫 Kuo-Hsin Yang
口試委員:	鄧福宸 Fu-chen Teng 楊國鑫 Kuo-Hsin Yang 李安叡 An-Jui Li
學位類別：	碩士 Master
系所名稱：	工程學院 - 營建工程系 Department of Civil and Construction Engineering
論文出版年：	2018
畢業學年度：	106
語文別：	中文
論文頁數：	123
中文關鍵詞：	加勁土堤、3D 有限元素分析、側向力、破壞模式
外文關鍵詞：	geosynthetic-reinforced-soil pier, 3D finite element, lateral loadings,, failure mode
相關次數：	點閱：267 下載：22
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上一筆

加勁擋土結構物已廣泛地運用於各種擋土工程，適合各種地形變化、排碳量低，且能承受較大的牆體變位。加勁擋土結構物除了傳統應用上用於承受垂直的荷載之外，由於近幾年來因為氣候型態的改變，
自然災害頻傳，像是洪水、海嘯、土石流及雪崩等，世界各地也逐漸將加勁擋土結構物作為抵抗天然災害引致之側向外力。
本研究先以PLAXIS 3D 針對Shinoda et al. (2003)所建造的加勁土堤受側向推力作用進行基準模型建置。後續以三種不同牆面厚度及兩種側向力來作參數分析，並探討在上述不同條件下，加勁擋土牆結構物其力學行為、破壞型式及內部加勁材之受力狀況。

Geosynthetics-reinforced soil (GRS) structures are now widely used in various engineering projects. Numerous factors have fostered the acceptance of MSE retaining structures such as the suitability for various terrains, low carbon emission, and considerable ability to withstand sizeable deformations without structural distress. In addition to selfweight and vertical surcharge, GRS structures have also been used recently as barriers to resist lateral forces from natural disasters, such as floods, tsunamis, rockfalls, debris flows, and avalanches.
In this thesis, a 3D finite element (FE) model of a back-to-back GRS wall subjected to lateral loadings was first developed and validated using the physical model test results reported by Shinoda et al. (2003). After the model was validated, a series of parametric studies was conducted to evaluate the influence of facing thickness and loading types on the mechanical behavior, failure mode, and mobilization of reinforcement tensile loads of the GRS wall. The finding and results obtained from this study were discussed.

論文摘要...................................................................... I
Abstract .....................................................................II
致謝..........................................................................III
目錄.......................................................................... IV
表目錄........................................................................ VI
圖目錄.......................................................................VIII
第一章緒論......................................................................1
1 前言.......................................................................1
2 研究動機與目的...............................................................3
3 研究方法....................................................................7
4 論文架構....................................................................8
第二章文獻回顧 .................................................................10
1 加勁擋土牆之穩定性..........................................................10
1.1 加勁擋土結構物之外部穩定..................................................11
1.2 加勁擋土結構物之內部穩定..................................................14
2 數值分析於加勁擋土牆之應用..................................................16
3 擋土牆受側推力之相關研究.....................................................20
第三章數值分析與驗證.............................................................24
1 加勁擋土牆試驗介紹..........................................................24
2 數值分析方法................................................................30
2.1 分析軟體.................................................................30
2.2 分析模式.................................................................30
2.3 回填土本構模型............................................................31
2.4 界面元素.................................................................37
2.5 邊界條件設定.............................................................44
3 數值驗證...................................................................45
第四章參數分析與結果探討........................................................59
1 參數分析說明................................................................59
1.1 頂部側向力(Top Surface Load) .............................................63
1.2 線性分佈力(Linear Distribution Load) ..................................65
2 加勁材最大側向位移.........................................................67
2.1 頂部側向力(Top Surface Load) .............................................68
2.2 線性分佈力(Linear Distribution Load) ..................................71
2.3 未加加勁材之最大側向變位..................................................75
3 加勁材之受力狀況............................................................77
3.1 頂部側向力(Top Surface Load) .............................................77
3.2 線性分佈力(Linear Distribution Load) ..................................86
4 力學機制與破壞模式..........................................................97
4.1 牆內應力.................................................................97
4.2 牆體位移................................................................99
4.3 破壞模式...............................................................104
第五章結論與建議 .............................................................118
1 結論......................................................................118
2 建議.....................................................................119
參考文獻.....................................................................120
                                

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