彬縣大佛寺明鏡臺邊坡穩(wěn)定性分析
王玉蘭1，趙冬1，代時2
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王玉蘭1，趙冬1，代時2(1 西安建筑科技大學土木工程學院， 西安 710055； 2 中煤西安設計工程有限公司， 西安710055)［摘要］彬縣大佛寺明鏡臺為國家級重點保護文物。近年來，由于集中降雨和地震等因素的影響，明鏡臺臺基出現了蠕動變形和局部沉降，并導致上部墻體出現裂縫、木結構發(fā)生損壞等。通過現場勘察和病害分析，定性分析得出明鏡臺滑坡形成機理。建立了合理的三維有限元模型，采用有限元強度折減法對明鏡臺邊坡穩(wěn)定性進行分析，動態(tài)地模擬了邊坡失穩(wěn)時滑移面形成的過程，得出了明鏡臺邊坡失穩(wěn)時的破壞形式和滑移面位置。［關鍵詞］明鏡臺； 邊坡穩(wěn)定性； 有限元強度折減法中圖分類號：TU457 文獻標識碼：A 文章編號：1002-848X(2013)13-0084-07Landslide stability analysis of Mingjingtai of Big Buddhist Temple in Binxian CountyWang Yulan1, Zhao Dong1, Dai Shi2(1 Department of Civil Engineering, Xi′an University of Architecture & Technology, Xi′an 710055, China; 2 China Coal Xi′an Design Engineering Co., Ltd., Xi′an 710055, China)Abstract: Mingjingtai of Big Buddhist Temple in Binxian County is the state-level key cultural relics. In recent years, owing to the influence of rainfalls and earthquakes, foundation of Mingjingtai suffered peristalsis deformation and partial sedimentation, which lead to the upper walls cracks and wood structure damages. Through geological survey and disease analysis, mechanism of Mingjingtai’s landslide was obtained. Using the method of finite element strength reduction, three-dimensional finite element model was established and applied to the landslide stability numerical analysis of Mingjingtai. The forming process of the sliding surface was dynamically simulated, the failure model of the landslide was obtained and the location of sliding surface was obtained when the slope became instability.Keywords: Mingjingtai; landslide stability; finite element strength reduction作者簡介：王玉蘭，博士研究生，助教，Email: yulan1984333@163.com。參考文獻［1］王恭先.滑坡防治工程措施的國內外現狀［J］. 中國地質災害與防治學報, 1998, 9(1): 1-9.［2］鄭穎人, 王恭先.邊坡與滑坡工程治理［M］. 北京: 人民交通出版社, 2007.［3］洪海春, 徐衛(wèi)亞.地震作用下巖質邊坡穩(wěn)定性分析綜述［J］. 巖石力學與工程學報, 2005, 24（增1）: 4827-4835.［4］鄭穎人,趙尚毅, 張魯渝.用有限元強度折減法進行邊坡穩(wěn)定分析［J］. 中國工程科學, 2002,4(10): 57-78.［5］趙尚毅, 鄭穎人.用有限元強度折減法求邊坡穩(wěn)定性系數［J］. 巖土工程學報, 2002, 24 (3): 343-346.［6］朱伯芳.有限單元法原理與應用［M］. 北京: 中國水利水電出版社, 2009.［7］陳祖煜.土質邊坡穩(wěn)定分析——原理、方法、程序［M］.北京：中國水利水電出版社，2003.［8］劉杰, 張學深.簡單邊坡的穩(wěn)定性分析［J］. 巖土力學, 2002, 23(6): 714-716.
