土工基础

›› 2018, Vol. 32 ›› Issue (5): 552-558.

• 工程实录 • 上一篇    下一篇

SHPB在岩石动态力学性能测试中的应用成果综述

范 超1，3，余克服2，孟庆山3，曾卫星3   

  1. （1.广西大学土木建筑工程学院,南宁  530004；2.广西大学海洋学院，南宁 530004；
    3.中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071）
  • 收稿日期:2017-09-15 修回日期:2017-11-15 出版日期:2018-10-30 发布日期:2018-11-02
  • 作者简介:范 超（1991-），男，硕士生，研究方向为岩石力学。  通信作者：孟庆山（1974-），男，博士，研究员。
  • 基金资助:

    国家自然科学基金（41372316，41330642，41472287），中科院战略性先导科技专项（XDA13010201） 

Review of the SHPB in Rock Dynamics Research

FAN Chao1,3, YU Kefu2, MENG Qingshan3, ZENG Weixing3   

  1. (1.College of Civil Engineering & Architecture, Guangxi University, Nanning 530004;
    2.School of Marine Sciences, Guangxi University, Nanning 530004;
    3.Institute of Rock and Soil Mechanics，Chinese Academy of Sciences， Wuhan 430071)
  • Received:2017-09-15 Revised:2017-11-15 Online:2018-10-30 Published:2018-11-02

摘要： 综述了岩石动力学的工程意义、SHPB装置的试验原理和试验方法、岩石SHPB动力学试验的研究成果，总结得出：1）SHPB可作为研究岩石在中高应变率下力学性能的有效实验装置；2）试件尺寸和入射波形对SHPB试验准确性有很大影响；3）岩石的动态强度与应变率成很强的正相关性；4）岩石内的自由水对岩石的动态强度有较大影响；5）岩石的动态力学性能在极端高温和极端低温下有较大变化；6）动静组合加载下岩石的动力学性能与单轴冲击荷载下有一定区别，SHPB循环冲击试验能很好地模拟许多深层岩石工程问题。最后对SHPB试验方法与内容的改进提出了若干看法。

关键词: 岩石动力学, SHPB, 动静组合加载, 循环冲击, 温压耦合

Abstract: This article reviews the engineering significance of rock dynamics, test principles and methods of the Split Hopkinson Pressure Bar (SHPB) device and its research results of SHPB in the dynamic test of rock samples. It is concluded: ①SHPB is an effective design in the testing of mechanical properties of rock samples under medium to high strain rates due to its simplicity and accuracy; ②The specimen sizes and incident waveform have great influence on the accuracy of SHPB test results; ③ There is a strong positive correlation between the dynamic strength of rock sample and strain rate; ④ The free water in rock has a great influence on the dynamic strength of rock samples; ⑤The dynamic mechanical properties of rock samples change significantly within the conditions between extreme high temperature and extreme low temperatures; ⑥ The dynamic properties of rock samples under the coupled static and dynamic loading are different from those under the  uniaxial impact loading and SHPB cyclic impact tests can simulate the engineering properties of many deeply embedded rock mass. Finally, the recommendations and suggestions that could potentially improve the SHPB tests are also proposed by the authors.

Key words: Rock Dynamics, SHPB Device, Coupled Static and Dynamic Loading Conditions, Cyclic Impact, Coupling Effects of Temperature and Pressure