摘要
江苏340省道南京段改扩建工程团山垭口路段路堑边坡上部III级边坡为典型岩、土混合边坡,客观上存在下伏中风化岩表面软弱结构面稳定与土石互层堆积物的整体滑动稳定问题。文章分别运用无限边坡分析模型和强度折减法数值分析验算了该边坡的稳定性,揭示了软弱结构面和土石互层堆积物边坡整体稳定良好,并提出了双重稳定分析控制原则,为简单放坡护坡方案提供了依据。
With the III-level slope at the upper cutting slope of Tuanshanyakou section of 340 provincial highway Nanjing Segment reconstruction and expansion project in Jiangsu Province as the typical rock and soil mixed slope,there is objectively the stability problem of weak structural surface at underlying weathered rock surface and the overall sliding stability problem of interbedded rock-soil layer deposits.This article checks the stability of this slope through numerical analysis of infinite slope analysis model and strength reduction method,reveals the good overall slope stability at weak structural surface and at interbedded rock-soil layer deposits,and proposes the double stability analysis control principle,thereby providing the basis for the simple grading and slope protection scheme.
作者
姚凯
孙秋
钱春杰
石名磊
YAO Kai;SUN Qiu;QIAN Chun-jie;SHI Ming-lei(Nanjing Highway Management Office,Nanjing,Jiangsu,210008;Highway Science Institute of Nanjing Highway Management Office,Nanjing,Jiangsu,210000;Institute of Geotechnical Engineering,Southeast University,Nanjing,Jiangsu,211189)
出处
《西部交通科技》
2019年第3期14-18,161,共6页
Western China Communications Science & Technology
基金
2018年南京市交通科技项目“南京地区公路工程易风化岩路堑边坡防护对策研究”
关键词
强风化岩边坡
软弱结构面
数值模拟
强度折线模型
Strong weathered rock slope
Weak structural surface
Numerical simulation
Strength broken line model
