Seismic displacement analysis of a reinforced soil model wall considering progressive development of reinforcement force
Seismic displacement analysis of a reinforced soil model wall considering progressive development of reinforcement force
复制标题
DOI：
10.1680/gein.2009.16.3.222
复制
发表时间：
2009-06
影响因子：
4.5
通讯作者：
Ching-Chuan Huang;H. Wu
中科院分区：
文献类型：
--
作者：
Ching-Chuan Huang;H. Wu
在基于伪静态的分析模型中研究了在不规则地面加速度作用下土工合成材料加筋模型土挡墙中加筋力的逐步发展。在所提出的分析模型中，加固力的逐渐发展被表示为最大输入地面加速度的函数，该模型还结合了多楔块失效机制和纽马克的滑块理论。该分析模型消除了传统伪静力方法固有的缺点，即由于假设无论地面激励强度如何，钢筋都完全动员，可能会高估墙体的地震稳定性。研究还发现，使用峰值内摩擦角 (phip) 和完全动员的钢筋拉拔力计算出的临界地震系数 (khc) 值可用于模拟模型墙在受到不规则灌浆时的最终状态。
Progressive development of the reinforcement force in a geosynthetic-reinforced model soil retaining wall subjected to irregular ground accelerations was investigated in a pseudo-static-based analytical model. The progressive development of the reinforcement force was expressed as a function of maximum input ground accelerations in the proposed analytical model, which also incorporated a multi-wedge failure mechanism and Newmark's sliding-block theory. This analytical model eliminated a disadvantage inherent in the conventional pseudo-static approach, namely a possible overestimation of the seismic stability of the wall due to the assumption of full mobilization of the reinforcement force regardless of the intensity of ground excitation. It was also found that the value of the critical seismic coefficient (khc) calculated using a peak internal friction angle (ϕp) and a fully mobilized reinforcement pull-out force can be used to simulate the ultimate state of the model wall when subjected to irregular grou...