Improved Simplified Method for Prediction of Loads in Reinforced Soil Walls
Improved Simplified Method for Prediction of Loads in Reinforced Soil Walls
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DOI：
10.1061/(asce)gt.1943-5606.0001355
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发表时间：
2015-06
影响因子：
3.9
通讯作者：
T. Allen;R. Bathurst
中科院分区：
文献类型：
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作者：
T. Allen;R. Bathurst
摘要AASHTO和美国联邦公路管理局（FHWA）手册中报道的简化方法已被证明对非因素钢筋荷载和应变的预测很差，特别是对土工合成加筋土墙。为了提高墙体在工作应力（运行）条件下的荷载预测精度，作者提出了k -刚度法。然而，作者和其他人在最近的出版物中也认识到需要进一步改进k -刚度方法。此外，由于k -刚度法的复杂性和使用平面应变摩擦角来量化加筋土的强度，它的接受受到了阻碍。本文重新审视了这两种方法，并借鉴了k -刚度法发展的经验教训，以提高AASHTO/FHWA简化法的精度。将k -刚度法发展过程中引入的关键参数应用于简化的Met方程。
AbstractThe Simplified Method as reported in AASHTO and Federal Highway Administration (FHWA) manuals has been demonstrated to give poor predictions of unfactored reinforcement loads and strains, especially for geosynthetic reinforced soil walls. The writers have proposed the K-stiffness Method to improve the load prediction accuracy for walls under working stress (operational) conditions. However, it has also been recognized in recent publications by the writers and others that further improvements to the K-stiffness Method are needed. Furthermore, acceptance of the K-stiffness Method has been hindered due to its perceived complexity and the use of the plane strain friction angle to quantify the strength of the reinforced soil. This paper takes a fresh look at both methods and uses lessons learned from the K-stiffness Method development to improve the accuracy of the AASHTO/FHWA Simplified Method. Key parameters introduced during the development of the K-stiffness Method are applied to the Simplified Met...