水化学溶液与循环荷载共同作用下石灰岩疲劳变形特性

刘扬; 杨刚; 王军祥; 姜谙男

doi:10.16411/j.cnki.issn1006-7736.2018.02.018

大连海事大学学报 >

2018 , Vol. 44 >Issue 2: 118 - 125

DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2018.02.018

交通运输工程

水化学溶液与循环荷载共同作用下石灰岩疲劳变形特性

刘扬 ,
杨刚 ,
王军祥 ,
姜谙男

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(1.大连海事大学道路与桥梁研究所，辽宁大连 116026；2.沈阳工业大学建筑与土木工程学院，沈阳 110870)

刘扬(1978-)，男，博士生，研究方向：岩溶区隧道突水灾害与动力数值计算方法研究.

收稿日期: 2017-04-06

修回日期: 2017-12-01

网络出版日期: 2017-12-01

基金资助

国家自然科学基金资助项目(51608332;51678101)；中央高校基本科研业务费专项资金资助项目(3132014326).

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Fatigue deformation characteristics of limestone under the combined action of hydrochemical solution and cyclic loading

LIU Yang ,
YANG Gang ,
WANG Jun-xiang ,
JIANG An-nan

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(1. Institute of Road and Bridge Engineering, Dalian Maritime University, Dalian 116026,China; 2. School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China)

Received date: 2017-04-06

Revised date: 2017-12-01

Online published: 2017-12-01

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摘要

为研究水化学溶液与循环荷载共同作用对工程岩体稳定性的影响, 选取大连地区地铁隧道石灰岩并加工成标准圆柱形试件，对其进行不同时间水化学溶液作用下的腐蚀试验. 利用MTS Landmark动力试验系统进行腐蚀后的石灰岩在循环荷载作用下的疲劳试验，探讨不同腐蚀时间对石灰岩疲劳变形特性的影响规律.试验结果表明：随着腐蚀时间的增加，在循环开始前发生的轴向变形和单个循环产生的轴向变形均会提高，疲劳破坏时总循环次数显著减小，说明腐蚀效应加速了岩石的疲劳进程.对溶液pH变化以及扫描电子显微镜（SEM）图像分析表明，水化学溶液改变了岩石的微细观结构组织，这是导致岩石动态力学特性发生变化的根本原因.基于试验数据拟合石灰岩疲劳寿命-腐蚀时间曲线，利用该曲线可以进行特定循环荷载与腐蚀环境共同作用下岩石疲劳寿命的预测.

关键词： 岩石力学; 石灰岩; 化学腐蚀; 循环荷载; 疲劳变形; 疲劳寿命

本文引用格式

刘扬 , 杨刚 , 王军祥 , 姜谙男 . 水化学溶液与循环荷载共同作用下石灰岩疲劳变形特性[J]. 大连海事大学学报, 2018 , 44(2) : 118 -125 . DOI: 10.16411/j.cnki.issn1006-7736.2018.02.018

Abstract

In order to study the effects of combined action of water chemical solution and cyclic loading on the stability of the rock mass, the limestone of Dalian subway tunnel was selected and processed into standard cylindrical specimens, and corrosion tests were carried out under different water chemical solutions at different time. The fatigue tests of corroded limestone under cyclic loading were conducted by using Landmark dynamic test system (MTS) to explore the influence of different corrosion time on limestone fatigue deformation characteristics. Results show that as the increase of corrosion time, the axial deformation before the starting of the cycle and the axial deformation produced by the single cycle, all of them increase and the total cycle number decreases significantly during fatigue failure, which indicates that the corrosion effect accelerates the fatigue process of rock. The variation of solution pH and images by SEM show that the chemical solution changes the microstructure of rock, which is the fundamental reason for the change of rock dynamic mechanical properties. The bridging curve of fatigue lifecorrosion time is fitted based on the test data to predict the fatigue life of rock under combined action of specific cyclic loading and corrosive environment.

Key words： rock mechanics; limestone; chemical corrosion; cyclic loading; fatigue deformation; fatigue life

参考文献

[1] 陈四利, 冯夏庭, 李邵军. 化学腐蚀对黄河小浪底砂岩力学特性的影响[J]. 岩土力学, 2002, 23(3): 284-287, 296.
CHEN Si-li, FENG Xia-ting, LI Shao-jun. The effects of chemical erosion on mechanical behaviors of Xiaolangdi sandstone[J]. Rock and Soil Mechanics, 2002, 23(3): 284-287, 296.
[2] 鲁祖德, 丁梧秀, 冯夏庭, 等. 裂隙岩石的应力-水流-化学耦合作用试验研究[J]. 岩石力学与工程学报, 2008, 27(4): 796-804.
LU Zhu-de, DING Wu-xiu, FENG Xia-ting, et al. Experimental study on mechano-hydro-chemical coupling process in cracked rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(4): 796-804.
[3] 申林方, 冯夏庭, 潘鹏志, 等. 单裂隙岩花岗岩在应力-渗流-化学耦合作用下试验研究[J]. 岩石力学与工程学报, 2010, 29(7): 1379-1388.
SHEN Lin-fang, FENG Xia-ting, PAN Peng-zhi, et al. Experimental research on mechano-hydro-chemical coupling of granite with single fracture[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(7): 1379-1388.
[4] 刘建, 乔丽苹, 李鹏. 砂岩弹塑性力学特性的水物理化学作用效应-试验研究与本构模型[J]. 岩石力学与工程学报, 2009, 28(1): 20-29.
LIU Jian, QIAO Li-ping, LI Peng. Experimental studies and constitutive model of elastoplastic mechanical behaviors of sandstone with hydro-physicochemical influencing effects[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1): 20-29.
[5] 葛修润, 卢应发. 循环荷载作用下岩石疲劳破坏和不可逆问题的探讨[J]. 岩土工程学报, 1992, 14(3): 56-60.
LU Ying-fa. Discussion about coal’s fatigue failure and irreversible problem under cyclic loads[J]. Chinese Journal of geotechnical Engineering, 1992, 14(3): 56-60.
[6] 郭印同, 赵克烈, 孙冠华, 等. 周期荷载下盐岩的疲劳变形及损伤特性研究[J]. 岩土力学, 2011, 32(5): 1353-1359.
GUO Yin-tong, ZHAO Ke-lie, SUN Guan-hua, et al. Experimental study of fatigue deformation and damage characteristics of salt rock under cyclic loading[J]. Rock and Soil Mechanics, 2011, 32(5): 1353-1359.
[7] 卢高明, 李元辉, 张希巍, 等. 周期荷载作用下黄砂岩疲劳破坏变形试验研究[J]. 岩土工程学报, 2015, 37(10): 1886-1892.
LU Gao-ming, LI Yuan-hui, ZHANG Xi-wei, et al. Fatigue deformation characteristics of yellow sandstone under cyclic loading[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(10): 1886-1892.
[8] 刘恩龙, 黄润秋, 何思明. 循环加载时围压对岩石动力特性的影响[J]. 岩土力学, 2011, 32(10): 3009-3013.
LIU En-long, HUANG Run-qiu, HE Si-ming. Influence of confining pressure on dynamic properties of rock sample subjected to cyclic loading[J]. Rock and Soil Mechanics, 2011, 32(10): 3009-3013.
[9] 樊秀峰, 吴振祥, 简文彬. 循环荷载下砂岩疲劳损伤过程的声学特性分析[J]. 岩土力学, 2009, 30(增1): 58-62.
FAN Xiu-feng, WU Zhen-xiang, JIAN Wen-bin. Analysis of acoustic property of sandstone fatigue damage under cyclic loading[J]. Rock and Soil Mechanics, 2009, 30(增1): 58-62.
[10] 葛修润, 任建喜, 蒲毅彬, 等. 岩石疲劳损伤扩展规律CT细观分析初探[J]. 岩土工程学报, 2001, 23(2): 191-195.
GE Xiu-run, REN Jian-xi, PU Yi-bin, et al. Primary study of CT real-time testing of fatigue meso-damage propagation law of rock[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(2): 191-195.
[11] 许江, 李树春, 唐晓军, 等. 基于声发射的岩石疲劳损伤演化[J]. 北京科技大学学报, 2009, 31(1): 19-24.
XU Jiang, LI Shu-chun, TANG Xiao-jun, et al. Rock fatigue damage evolution based on acoustic emission[J]. Journal of University of Science and Technology Beijing, 2009, 31(1): 19-24.
[12] 赵永川, 杨天鸿, 肖福坤, 等. 西部弱胶结砂岩循环在和作用下塑性应变能变化规律. 煤炭学报, 2015, 40(8): 1813-1819.
ZHAO Yong-chuan, YANG Tian-hong, XIAO Fukun, et al. The variation law of plastic strain energy of western weak cemented sandstone during cyclic loading experiment[J]. Journal of China Coal Society, 2015, 40(8): 1813-1819.
[13] 彭瑞东, 鞠杨, 高峰, 等. 三轴循环加卸载下煤岩损伤的能量机制分析[J]. 煤炭学报, 2014, 39(2): 245-252.
PENG Rui-dong, JU Yang, GAO Feng, et al. Energy analysis on damage of coal under cyclical triaxial loading and unloading conditions[J]. Journal of China Coal Society, 2014, 39(2): 245-252.
[14] 刘永胜, 刘旺, 董新玉. 化学腐蚀作用下岩石的动态性能及本构模型研究[J]. 长江科学学院院报, 2015, 32(5): 72-75.
LIU Yong-sheng, LIU Wang, DONG Xin-yu. Dynamic mechanical properties and constitutive model of rock under chemical corrosion[J]. Journal of Yangtze River Scientific Research Institute, 2015, 32(5): 72-75.
[15] 王伟, 刘桃根, 吕军, 等. 水岩化学作用对砂岩力学特性影响的试验研究[J]. 岩石力学与工程学报, 2012, 31(增2): 3607-3616.
WANG Wei, LIU Tao-gen, LU Jun, et al. Experimental study of influence of water-rock chemical interaction on mechanical characteristics of sandstone[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(Supp.2): 3607-3616.

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