A Modified Newmark Method for Calculating Permanent Displacement of Seismic Slope considering Dynamic Critical Acceleration
A Modified Newmark Method for Calculating Permanent Displacement of Seismic Slope considering Dynamic Critical Acceleration
复制标题
考虑动态临界加速度的改进纽马克法计算地震边坡永久位移
DOI：
10.1155/2019/9782515
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发表时间：
2019-09
影响因子：
1.8
通讯作者：
Zheng Jun
中科院分区：
文献类型：
--
作者：
Cui Yulong;Liu Aijuan;Xu Chong;Zheng Jun
Newmark永久位移是评价地震边坡稳定性的重要指标，近年来得到了广泛的应用。传统的Newmark滑动法假设临界加速度恒定，但没有考虑滑动面上抗剪强度的非均匀性和动态折减过程，可能会导致对永久位移的低估。本文对这一问题进行了分析，提出了一种考虑动力临界加速度的地震边坡永久位移计算新方法，该方法采用蒙特卡罗模拟。算例计算表明，该方法能较好地反映滑块体在地震时程中的黏聚力下降和动力临界加速度。本文提出的改进的地震边坡永久位移计算方法，解决了Newmark滑动法计算值小于实际值的问题，是一种有益的改进。
Newmark permanent displacement is an important index for evaluating seismic slope stability, which has been widely used in recent years. The traditional Newmark sliding method assumes that the critical acceleration is constant but does not consider the inhomogeneity and dynamic reduction process of shear strength on the sliding surface, presumably leading to underestimation of the permanent displacement. In this paper, this problem is analyzed, and a new method for calculating permanent displacement of seismic slope considering dynamic critical acceleration is proposed, in which the Monte Carlo simulation is used. Example calculations indicate that this approach permits to show the dropping cohesion and the dynamic critical acceleration of the slide block during the earthquake time history. The improved method for calculating seismic slope permanent displacement presented in this paper solves the problem that the calculated value from the Newmark sliding method is smaller than the real value and is a useful improvement.
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影响因子：
1.5
作者：
Zhu Guang-cen
通讯作者：
Zhu Guang-cen
DOI：
--
发表时间：
2007
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Wang Kong-wei
通讯作者：
Wang Kong-wei
影响因子：
6.7
作者：
Chong Xu;Si-yuan Ma;Zhibiao Tan;Chao Xie;S. Toda;Xueqiang Huang
通讯作者：
Chong Xu;Si-yuan Ma;Zhibiao Tan;Chao Xie;S. Toda;Xueqiang Huang
影响因子：
3.9
作者：
Garcia-Rodriguez, M. J.;Malpica, J. A.;Diaz, M.
通讯作者：
Diaz, M.
影响因子：
4
作者：
Jafari, MK;Hosseini, KA;Buzzi, O
通讯作者：
Buzzi, O