Mechanical properties of reef limestone under cyclic impact loading

被引：0

作者：

Song K. ^{[1
]}

Huang J. ^{[2
,3
]}

Luo Y. ^{[1
,3
]}

Wei X. ^{[1
,3
]}

Zheng S. ^{[1
]}

Li X. ^{[1
,3
]}

Liu T. ^{[1
,3
]}

机构：

[1] School of Civil Engineering and Architecture, Wuhan University of Technology, Hubei, Wuhan

[2] School of Resources and Environmental Engineering, Wuhan University of Technology, Hubei, Wuhan

[3] Sanya Science and Education Innovation Park, Wuhan University of Technology, Hainan, Sanya

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷

基金：

中国国家自然科学基金; 海南省自然科学基金;

关键词：

impact load; mechanical properties; reef limestone; rock mechanics; stress-strain curve; terrigenous rocks;

D O I：

10.13722/j.cnki.jrme.2022.0935

中图分类号：

学科分类号：

摘要：

To study the failure mode of reef limestone under impact load，static mechanical tests are performed on two types of reef limestone and several terrigenous rock. And the stress-strain change laws of the rock samples under different impact pressures were analyzed using the split Hopkinson pressure bar system(SHPB). And explore the dynamic mechanical properties of reef limestone under three cycle impact loads with LS-DYNA numerical simulation software. The results show that the static mechanical properties of reef limestone are close to those of gypsum，far less than those of terrigenous rocks. And the reef limestone has a certain residual strength after failure. However，under dynamic impact load，the reef limestone has an obvious compaction stage. And its dynamic compressive strength will increase significantly with the increase of strain rate. In addition，when the cyclic impact load is small，the stress-strain curve of reef limestone sample is closed or open type under the first and second impacts，but it becomes open type under the third impact. When the impact load increases to a certain value，the stress-strain curve of reef limestone sample under different cyclic impact times is open type. © 2023 Academia Sinica. All rights reserved.

引用

页码：3956 / 3965

页数：9

共 22 条

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