Strain-Softening Model for Marble Considering the Degradation of Elastic Modulus

Ning Jian-guo; Gu Qing-heng; Wang Jun; Hu Shan-chao; Ma Qing; Qiu Peng-qi

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Strain-Softening Model for Marble Considering the Degradation of Elastic Modulus

机译：考虑弹性模量劣化的大理石应变软化模型

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Rocks encountered in deep underground engineering, such as coal mining and tunnel excavating applications, are usually in states of failure. It is of great engineering significance to study the post-peak strength behavior of rock. A strain-softening model that considers the degradation of elastic modulus was suggested in this article. The strain-softening characteristics and degradation law of the elastic modulus for marble were first obtained based on triaxial cyclic loading tests. A strain-softening model was then suggested by considering the degradation of the elastic modulus. Finally, the suggested model was embedded in the finite difference software (FLAC), and the conventional triaxial compression tests for marble were simulated. The results showed that the stress-strain curves simulated using the suggested model were in agreement with the contour curves of cyclic loading. The results may serve as a reference for the strain-softening characteristics of the Jinping marble studied in this paper.

机译：在深层地下工程中遇到的岩石，如煤矿和隧道挖掘应用，通常是失败的状态。研究岩石后峰值强度行为的工程意义很高。在本文中提出了一种考虑弹性模量劣化的应变软化模型。首先基于三轴环状加载试验获得大理石弹性模量的应变软化特性和降解规律。然后通过考虑弹性模量的劣化来提出菌株软化模型。最后，建议的模型嵌入在有限差分软件（FLAC）中，并且模拟了对大理石的传统三轴压缩测试。结果表明，使用所提出的模型模拟的应力 - 应变曲线与循环载荷的轮廓曲线一致。结果可以作为在本文中研究的金杨大理石的应变软化特性的参考。

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《Arabian Journal for Science and Engineering. Section A, Sciences》 |2018年第10期|5635-5643|共9页
作者
Ning Jian-guo; Gu Qing-heng; Wang Jun; Hu Shan-chao; Ma Qing; Qiu Peng-qi;
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作者单位

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

Shandong Univ Sci & Technol Coll Min & Safety Engn State Key Lab Min Disaster Prevent & Control Shan 579 Qianwangang Rd Qingdao 266590 Shandong Peoples R China;

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收录信息美国《科学引文索引》(SCI);
原文格式 PDF
正文语种 eng
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关键词
Strain-softening; Elastic modulus degradation; Strength parameter evolution; Confining pressure; Numerical simulation;

机译：菌株软化;弹性模量降解;强度参数演化;限制压力;数值模拟;

Strain-Softening Model for Marble Considering the Degradation of Elastic Modulus

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