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標題: L型擋土牆之穩定性探討
Stability Study on L-Type Retaining Wall
作者: 朱志祥
Chi-Hsiang Chu
關鍵字: L-type retaining walls
Plaxis computer program
safety factors
L 型擋土牆
Plaxis 電腦程式
引用: 1.內政部建築研究所(2001),'建築物基礎構造設計規範'。 2.內政部建築研究所(2003),'擋土設施工程手冊'。 3.交通部公路總局(2007),'道路工程參考圖'。 4.行政院農業委員(2012),'水土保持技術規範' 5.李憲彥(1995),'地震引起之擋土牆土壓力計算',私立淡江大學土木工程研究所碩士論文。 6.林志陽(2008),'現有公路擋土牆力學行為之研究',國立中興大學土木工程學系碩士論文。 7.朱琮瑋(2008),'懸臂式擋土牆最佳化設計之研究',國立中央大學土木工程學系碩士論文。 8.林四川、吳文隆、周功台(1993),'邊波穩定分析程式(STABL)應用之探討',地工技術,第四十一期,pp. 12-27。 9.施國欽(2010),'大地工程學(二)基礎工程篇',台北:文笙書局。 10.陳玉珊(2011),'剪力榫對擋土牆穩定性之影響',國立中興大學土木工程學系碩士論文。 11.游少槐(2013),'扶壁式擋土牆力學行為之探討',國立中興大學土木工程學系碩士論文。 12.曾志賢(2012),'不同背斜傾角重力式擋土牆之穩定性探討',國立中興大學土木工程學系碩士論文。 13.葉慶隆(2014),'垂直地震效應對擋土牆穩定行為之探討',國立中興大學土木工程學系碩士論文。 14.楊哲夫(2004),'不同類型擋土牆擬靜態力學行為之探討',國立中興大學土木工程學系碩士論文。 15. Das, B.M. (2011) : Principles of Soil Mechanics and Foundation Engineering,7th edition,CLENGAGE Learning. 16. Jaky, J.(1944), ' The Coefficient of Earth Pressure at Rest,' Journal for the Society of Hungarian Architects and Engineers, October, pp. 355-358. 17. Mononobe, N.(1929), 'Earthquake-Proof Construction of Masonry Dams, ' Proceedings, World Engineering Conference 9, pp. 274-280. 18. Okabe,S.(1926), 'General Theory of Earth Pressure,' Journal of the Japanese Society of Civil Engineers, Vol. 12, No 1 . 19. PLAXIS bv (2010), PLAXIS 2D Reference Manual, P. O. Box 572, 2600 An Delft, Netherlands.
摘要: 台灣地狹人稠,山坡地佔土地總面積之百分七十五,故山坡地的開發勢必難免。近年來 L 型擋土牆工法常被用於山坡地開發,以避免擋土牆牆踵或牆趾侵入他人土地,並增加可使用空間,惟目前工程界似乎未對 L 型擋土牆之穩定性及力學行為作較深入探討。本研究將探討 L 型擋土牆之相關力學行為,作為日後在 L 型擋土牆設計之參考。本研究進行 L 型擋土牆工程案例之穩定性分析,以及利用 Plaxis 電腦程式探討 L 型擋土牆案例之相關力學行為,研究結果顯示:(1)「後撐式」L 型擋土牆相較於「前撐式」L 型擋土牆具有較高之安全係數。(2) L 型擋土牆於地震及暴雨狀態時,其抗傾倒及抗滑動安全係數皆明顯下降;而有設置剪力榫之 L 型擋土牆則可明顯提升抗滑動安全係數,惟其對抗傾倒貢獻不顯著。(3)前撐式 L 型擋土牆之水平位移量相較於後撐式 L 型擋土牆為大,前撐式擋土牆基礎底版最大土壓力值約為後撐式 L 型擋土牆 1/3。(4)後撐式 L 型擋土牆最大主應 力發生於牆趾附近,而前撐式 L 型擋土牆最大主應力則發生牆身與基 礎交界處。
There are land limited and more populated in Taiwan. The seventy-five percent of land area are slope. Therefore,it is neceaary to develop in the slope area. In recent years, L-type retaining walls are frequently used in the slope area to avoid the invasion of private land and increase the using space. However,the study about stability and mechanical behavior of L-type retaining walls is scarce. This thesis will study the relevant mechanical behavior of L-type retaining walls in order to provide the reference in the design. This study aims at the example of leaned-back retaining walls to perform the stability analysis using the engineering computation and study the relevant mechanical behavior through Plaxis computer program. From the analyzed results, it indicates that (1). The higher safety factors are found in the backwards supported L-type retaining walls compared with forwards supported type. (2).The safety factors in stormy rain and earthquake conditions are significantly decreased for L-type retaining walls. The installation of shear key can improve effectively inthe resistance of sliding, but little contribution in overturning. (3).The horizontal displacement for forwards supported L-type retaining walls is larger compared with backwards supported type. The value of maximum soil pressure in the slab of former walls is about one-third of the latter. (4).The maximum principal stress of backwards supported L-type retaining walls occurs near the toe, while it is found near the interface of wall and slab for forwards supported type.
其他識別: U0005-0607201510590800
文章公開時間: 2018-07-16
Appears in Collections:土木工程學系所



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