Electron-Microscopic Analysis on Marble Specimens of Static and Cyclic Loading Tests

Lu Yingfa; Zhang Meiying; Ge Xiurun

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Electron-Microscopic Analysis on Marble Specimens of Static and Cyclic Loading Tests

更新时间：2026-06-25

- Electron-Microscopic Analysis on Marble Specimens of Static and Cyclic Loading Tests
- Vol. 11, Issue 4, (1990)
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- Online First：28 January 2018，
  
  Published：1990
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Lu Yingfa, Zhang Meiying, Ge Xiurun. Electron-Microscopic Analysis on Marble Specimens of Static and Cyclic Loading Tests[J]. 1990, 11(4).
DOI：

Lu Yingfa, Zhang Meiying, Ge Xiurun. Electron-Microscopic Analysis on Marble Specimens of Static and Cyclic Loading Tests[J]. 1990, 11(4). DOI：

摘要

本文对单轴静态和循环荷载试验前后的大理岩试件进行了电镜试验分析

从中得出三个结论:(1) 试件中不同的部位

其破坏程度不同;(2) 对试件用不同的加载方式

其破坏方式和特征不同;(3) 在疲劳应力门槛值(疲劳应力极限值。以下

称疲劳应力门槛值)以下的循环幅值荷载作用下

岩石内部的裂隙等发生闭合

这是证明岩石疲劳应力门槛值存在的一个重要试验证据。

Abstract

In this paper

crack propagation laws were studied by means of observing marble specimens

which were conducted uniaxial static and cyclic loading tests

with electron-microscope. The studying results showed: (1) Different parts of rock specimen suffer differential degree damage; (2) Failure models and characteristics of rock specimens change with loading paths; (3) Rock cracks are to be closed

when amplitude of cyclic stress is smaller than “fatigue threshold stress” of rock. This is mainly testimony of “rock fatigue threshold stress” existence.

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