- 摘 要
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（1 重慶綠城兩江建筑設計有限公司， 重慶 401123； 2 重慶大學土木工程學院， 重慶 400045； 3 山地城鎮(zhèn)建設與新技術教育部重點實驗室(重慶大學)， 重慶 400030；4 青島綠城建筑設計有限公司， 青島 266071； 5 重慶房地產(chǎn)職業(yè)學院， 重慶 404100）
［摘要］依托巖質(zhì)邊坡坡頂建筑工程實例，利用FLAC3D軟件建立數(shù)值計算模型，分析了樁端進入潛在破裂面以下和位于潛在破裂面以上兩種情況下，建筑巖質(zhì)邊坡沿潛在破裂面滑移的安全系數(shù)。通過強度折減法改變潛在破裂面的內(nèi)摩擦角和黏聚力的取值，模擬計算在強度參數(shù)不同取值情況下，建筑巖質(zhì)邊坡的安全系數(shù)。結果表明：樁端進入潛在破裂面以下時，建筑巖質(zhì)邊坡的安全系數(shù)比樁端位于潛在破裂面以上時提高4倍以上。對本工程而言，樁端進入潛在破裂面以下和樁端位于潛在破裂面以上兩種情況都可以滿足規(guī)范對邊坡安全系數(shù)要求，本工程設計具有較大的安全度。
［關鍵詞］建筑巖質(zhì)邊坡； 樁基礎； 潛在破裂面； 數(shù)值分析
中圖分類號：TU473-1文獻標識碼：A文章編號：1002-848X(2017)19-0053-06
Numerical analysis of pile length effect on rock slope stability of building on top of slope
Huang Jia1, Yu Deshun2,3, Lu Li2,3, Yang Zhuoxing1, Wang Lianhua4, Hu Daiwen5
(1 Chongqing Liangjiang Greenton Architectural Design Co., Ltd., Chongqing 401123, China; 2 College of Civil Engineering, Chongqing University,Chongqing 400045, China; 3 Key Laboratory of New Technology for Construction of Cities in Mountain Area(Chongqing University), Ministry of Education, Chongqing 400030, China; 4 Qingdao Greenton Architectural Design Co., Ltd., Qingdao 266071, China; 5 Chongqing Real Estate College,Chongqing 404100, China)
Abstract:Based on the practical engineering example of building on the top of rock slope, numerical calculation model was established through FLAC3D to analyze the safety factor of the construction rock slope sliding along the potential rupture surface under the two conditions of the pile end entering below the potential failure surface and above the potential failure surface. By means of strength reduction method, the internal friction angle and cohesion value of potential failure surface were changed, and the safety factor of building rock slope was simulated and calculated under different values of strength parameters. The results show that the safety factor of the rock slope, when pile end enters below the potential failure surface, is more than 4 times higher than that under the condition that pile end enters above the potential failure surface. For this project, both the two conditions can meet the code requirements of the safety factor of the slope, and the design of this project has great safety margin.
Keywords:building rock slope; pile foundation; potential failure surface; numerical method
* 中央高?；緲I(yè)務費項目（106112014CDJZR200010）。
作者簡介：黃嘉，碩士，教授級高級工程師，一級注冊結構工程師，Email：huangjia@gad.com.cn。
