Slope-Slide Simulation with Discontinuous Deformation and Displacement Analysis
Slope-Slide Simulation with Discontinuous Deformation and Displacement Analysis
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DOI：
10.1061/(asce)gm.1943-5622.0000746
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发表时间：
2017-05
影响因子：
3.7
通讯作者：
B. Gong;Chun’an Tang
中科院分区：
文献类型：
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作者：
B. Gong;Chun’an Tang
非连续变形与位移（DDD）分析方法是现实破坏过程分析（RFPA）和非连续变形分析（DDA）方法的结合，为小变形和大位移两个阶段的全岩石破坏过程分析提供了一种合适的方法。采用DDD方法对意大利Cesana Brianza Alpetto矿山的高岩质边坡进行了数值模拟，结果与现场观测和前人的数值结果吻合较好，验证了DDD方法对这类岩土工程问题的适用性。此外，本研究验证了DDD方法的两个主要优点，即在使用DDA模块之前，可以直接使用RFPA模块获得临界失效面，而无需进行任何假设，并且由于DDA模块只需要计算大位移单元，因此计算效率得到了显著提高。事实证明，DDD方法是一种有效、高效的方法。
Abstract The discontinuous deformation and displacement (DDD) analysis method, a combination of the realistic failure-process analysis (RFPA) and discontinuous deformation analysis (DDA) methods, offers an appropriate approach for whole rock failure-process analysis involving both the small deformation and large displacement stages. A high rock-slope slide at the Alpetto Mine in Cesana Brianza, Italy, was simulated with the DDD method, and the results are consistent with site observations and previous numerical results, which validates the DDD code for this kind of geotechnical problem. Moreover, this study verified the two main advantages of the DDD method, i.e., the critical failure surface can be obtained directly without any assumptions with the RFPA module before using the DDA module, and computing efficiency is improved significantly because the large displacement elements are the only elements that need to be calculated by the DDA module. The DDD method has proved to be an effective and efficient a...