岩质反倾边坡弯曲倾倒破坏分析方法研究

doi:10.13722/j.cnki.jrme.2016.1001

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摘要弯曲倾倒破坏是岩质反倾边坡的一种主要失稳破坏模式，目前，岩质反倾边坡弯曲倾倒破坏稳定性分析中存在很多悬而未决的问题。通过对模型试验结果的分析，阐明岩质反倾边坡弯曲倾倒的破坏过程和破坏机制，基于极限平衡理论，建立岩质反倾边坡弯曲倾倒破坏的力学模型和稳定性分析方法，利用所建立的分析方法，以MATLAB为平台编写岩质边坡弯曲倾倒稳定性分析程序，通过2个工程实例边坡对所提力学模型和分析方法进行验证，并进行参数分析，得出的结论和规律更符合工程实际，对该类边坡的设计施工具有指导意义。

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	陈从新
	郑允
	孙朝燚

关键词 ：边坡工程, 岩质反倾边坡, 倾倒破坏, 极限平衡, 分析方法

Abstract：Flexural toppling failure is one of the most common failure types of counter-tilt slopes of layered rock. There are many questions need to be solved currently. The failure process and mechanism of the flexural toppling of counter-tilt slopes of layered rock were clarified based on the analysis of model test results. The mechanical model and stability analysis method of the flexural toppling of counter-tilt slopes of layered rock were established on the basis of the limit equilibrium theory for cantilever beams，and a special computer code was developed to provide rapid evaluation of slope stability for the flexural toppling of counter-tilt slopes of layered rock. Finally，two case studies were illustrated for practical verification of the proposed approach，and a parametric study was conducted. Some conclusions useful for design and construction of these types of slopes were drawn.

Key words： slope engineering rock layered counter-tilt slopes toppling failure limit equilibrium analytical approach

引用本文:

陈从新，郑允，孙朝燚. 岩质反倾边坡弯曲倾倒破坏分析方法研究[J]. 岩石力学与工程学报, 2016, 35(11): 2174-2187.
CHEN Congxin，ZHENG Yun，SUN Chaoyi. An analytical approach on flexural toppling failure of counter-tilt slopes of layered rock. , 2016, 35(11): 2174-2187.

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http://rockmech.org/CN/10.13722/j.cnki.jrme.2016.1001 或 http://rockmech.org/CN/Y2016/V35/I11/2174

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