彭泽核电厂砂岩动力学试验研究
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摘要
对江西彭泽核电厂一期工程主厂区的细砂岩和含砾石英砂岩进行了单轴循环加卸载试验,研究了2种岩性的阻尼比和动弹性模量与幅值、频率和深度之间的关系.结果表明:细砂岩和含砾石英砂岩在相同幅值变化范围和相同频率变化范围下,其阻尼比和动弹性模量的变化趋势类似;在不同幅值下,2种岩性的动参数不同;当循环频率在0.01~1.0 Hz范围内变化时,随着频率的增大,滞回环面积和阻尼比都会增大,而动弹性模量基本不变;细砂岩的动参数随深度基本不变,而含砾石英砂岩的动弹性模量随着深度的增加而减小,阻尼比反之.
Uniaxial cyclic loading-unloading tests on fine-grained sandstone and quartz sand with gravel in the main plant of the first stage project of Pengze Nuclear Power Plant in Jiangxi Province were performed.The variations of damping ratio and dynamic elastic modulus of the two kinds of rocks with frequency,amplitude and depth were studied.The test results show that under the same amplitude and frequency ranges,the variation trends of the damping ratio and the dynamic elastic modulus of the fine-grained sandstone are similar to those of the quartz sand with gravel.Under different amplitudes,the dynamic parameters of the two kinds of rocks are different.When the cyclic frequency changes from 0.01 to 1.0 Hz,the hysteresis loop area and the damping ratio of the two kinds of rocks both increase with the increase of the frequency,while the dynamic elastic modulus almost does not change.The dynamic parameters of the fine-grained sandstone does not change with the depth,while the dynamic elastic modulus of quartz sand with gravel decreases with the increase of the depth and its damping ratio increases with the increase of the depth.
Uniaxial cyclic loading-unloading tests on fine-grained sandstone and quartz sand with gravel in the main plant of the first stage project of Pengze Nuclear Power Plant in Jiangxi Province were performed.The variations of damping ratio and dynamic elastic modulus of the two kinds of rocks with frequency,amplitude and depth were studied.The test results show that under the same amplitude and frequency ranges,the variation trends of the damping ratio and the dynamic elastic modulus of the fine-grained sandstone are similar to those of the quartz sand with gravel.Under different amplitudes,the dynamic parameters of the two kinds of rocks are different.When the cyclic frequency changes from 0.01 to 1.0 Hz,the hysteresis loop area and the damping ratio of the two kinds of rocks both increase with the increase of the frequency,while the dynamic elastic modulus almost does not change.The dynamic parameters of the fine-grained sandstone does not change with the depth,while the dynamic elastic modulus of quartz sand with gravel decreases with the increase of the depth and its damping ratio increases with the increase of the depth.
引文
[1]郭文,李强,王汝恒.振动频率对饱和砂卵石土动模量和动阻尼比影响的试验研究[J].四川建筑科学研究,2007,33(6):113-115.(GOU Wen,LI Qiang,WANG Ru-heng.Experimental study on influence of vibration frequency to dynamic modulus anddamping ratio characteristics of saturate sandy pebble soil[J].Sichuan Building Science,2007,33(6):113-115.(in Chinese))
[2]黎冰,高玉峰,丰土根.振动频率对LCES动力特性的影响分析及其机理初探[J].岩土力学,2008,29(10):2731-2734.(LIBing,GAO Yu-feng,FENG Tu-gen.Cyclic loading frequency effect and mechanism of lightweight clay-EPS beads soil[J].Rock and SoilMechanics,2008,29(10):2731-2734.(in Chinese))
[3]张茹,涂扬举,费文平,等.振动频率对饱和黏性土动力特性的影响[J].岩土力学,2006,27(5):699-704.(ZHANG Ru,TUYang-ju,FEI Wen-ping,et al.Effect of vibration frequency on dynamic properties of saturated cohesive soil[J].Rock and SoilMechanics,2006,27(5):699-704.(in Chinese))
[4]刘建锋,谢和平,徐进,等.循环荷载作用下岩石阻尼特性的试验研究[J].岩石力学与工程学报,2008,27(4):165-171.(LIUJian-feng,XIE He-ping,XU Jin,et al.Experimental study on damping characteristics of rock under cyclic loading[J].Chinese Journal ofRock Mechanics and Engineering,2008,27(4):165-171.(in Chinese))
[5]胡文尧,王天龙.原状饱和黏性土在地震作用下的剪切模量和阻尼比[J].岩土工程学报,1980,2(3):82-94.(HU Wen-yao,WANG Tian-long.Shear modulus and damping of cohesive soil under earthquake loading conditions[J].Chinese Jounal of GeotechnicalEngineering,1980,2(3):82-94.(in Chinese))
[6]何昌荣.周期荷载作用下的模量阻尼特性[J].应用基础与工程科学学报,1995,3(2):113-119(HE Chang-rong.Modulus anddamping under cyclic loading[J].Journal of Basic Science and Engineering,1995,3(2):113-119.(in Chinese))
[7]葛修润,蒋宇,卢允德,等.周期荷载作用下岩石疲劳变形特性试验研究[J].岩石力学与工程学报,2003,22(10):1581-1585.(GE Xiu-run,JIANG Yu,LU Yun-de,et al.Tesing study on fatigue deformation law of rock under cyclic loading[J].ChineseJournal of Rock Mechanics and Engineering,2003,22(10):1581-1585.(in Chinese))
[8]葛修润,卢应发.循环荷载作用下岩石疲劳破坏和不可逆变形问题的探讨[J].岩土工程学报,1992,14(3):56-60.(GE Xiu-run,LU Ying-fa.Discussion on problems of Rock fatigue damage and irreversible deformation under cyclic loading[J].Chinese Jounal ofGeotechnical Engineering,1992,14(3):56-60.(in Chinese))
[9]葛修润.周期荷载作用下岩石大型三轴试验的变形和强度特性研究[J].岩土力学,1987,8(2):11-19.(GE Xiu-run.Study ondeformation and strength behaviour of the large-sized triaxial rock samples under cyclic loading[J].Rock and Soil Mechanics,1987,8(2):11-19.(in Chinese))
[10]TUTUNCN A N,PODIO A L,GREGORY A R,et al.Nonlinear viscoelastic behavior of sedimentary rock:partⅠ:effect of frequency andstrain amplitude[J].Geophysics,1998,63(1):184-194.
[11]薛彦伟,席道瑛,徐松林.岩石非经典非线性频率效应的细观研究[J].岩石力学与工程学报,2005,24(增刊1):5020-5025.(XUE Yan-wei,XU Dao-ying,XU Song-ling.Micro-study on rock non-classical and non-linear frequency effect[J].Chinese Journal ofRock Mechanics and Engineering,2005,24(Sup 1):5020-5025.(in Chinese))
[12]席道瑛,刘斌,田象燕.饱和岩石的各向异性及非线性黏弹性响应[J].地球物理学报,2002,45(1):109-118.(XU Dao-ying,LIU Bin,TIAN Xiang-yan.Anisotropy and nonlinear viscoelastic behavior of saturated rocks[J].Chinese Journal of Geophysics,2002,45(1):109-118.(in Chinese))
[2]黎冰,高玉峰,丰土根.振动频率对LCES动力特性的影响分析及其机理初探[J].岩土力学,2008,29(10):2731-2734.(LIBing,GAO Yu-feng,FENG Tu-gen.Cyclic loading frequency effect and mechanism of lightweight clay-EPS beads soil[J].Rock and SoilMechanics,2008,29(10):2731-2734.(in Chinese))
[3]张茹,涂扬举,费文平,等.振动频率对饱和黏性土动力特性的影响[J].岩土力学,2006,27(5):699-704.(ZHANG Ru,TUYang-ju,FEI Wen-ping,et al.Effect of vibration frequency on dynamic properties of saturated cohesive soil[J].Rock and SoilMechanics,2006,27(5):699-704.(in Chinese))
[4]刘建锋,谢和平,徐进,等.循环荷载作用下岩石阻尼特性的试验研究[J].岩石力学与工程学报,2008,27(4):165-171.(LIUJian-feng,XIE He-ping,XU Jin,et al.Experimental study on damping characteristics of rock under cyclic loading[J].Chinese Journal ofRock Mechanics and Engineering,2008,27(4):165-171.(in Chinese))
[5]胡文尧,王天龙.原状饱和黏性土在地震作用下的剪切模量和阻尼比[J].岩土工程学报,1980,2(3):82-94.(HU Wen-yao,WANG Tian-long.Shear modulus and damping of cohesive soil under earthquake loading conditions[J].Chinese Jounal of GeotechnicalEngineering,1980,2(3):82-94.(in Chinese))
[6]何昌荣.周期荷载作用下的模量阻尼特性[J].应用基础与工程科学学报,1995,3(2):113-119(HE Chang-rong.Modulus anddamping under cyclic loading[J].Journal of Basic Science and Engineering,1995,3(2):113-119.(in Chinese))
[7]葛修润,蒋宇,卢允德,等.周期荷载作用下岩石疲劳变形特性试验研究[J].岩石力学与工程学报,2003,22(10):1581-1585.(GE Xiu-run,JIANG Yu,LU Yun-de,et al.Tesing study on fatigue deformation law of rock under cyclic loading[J].ChineseJournal of Rock Mechanics and Engineering,2003,22(10):1581-1585.(in Chinese))
[8]葛修润,卢应发.循环荷载作用下岩石疲劳破坏和不可逆变形问题的探讨[J].岩土工程学报,1992,14(3):56-60.(GE Xiu-run,LU Ying-fa.Discussion on problems of Rock fatigue damage and irreversible deformation under cyclic loading[J].Chinese Jounal ofGeotechnical Engineering,1992,14(3):56-60.(in Chinese))
[9]葛修润.周期荷载作用下岩石大型三轴试验的变形和强度特性研究[J].岩土力学,1987,8(2):11-19.(GE Xiu-run.Study ondeformation and strength behaviour of the large-sized triaxial rock samples under cyclic loading[J].Rock and Soil Mechanics,1987,8(2):11-19.(in Chinese))
[10]TUTUNCN A N,PODIO A L,GREGORY A R,et al.Nonlinear viscoelastic behavior of sedimentary rock:partⅠ:effect of frequency andstrain amplitude[J].Geophysics,1998,63(1):184-194.
[11]薛彦伟,席道瑛,徐松林.岩石非经典非线性频率效应的细观研究[J].岩石力学与工程学报,2005,24(增刊1):5020-5025.(XUE Yan-wei,XU Dao-ying,XU Song-ling.Micro-study on rock non-classical and non-linear frequency effect[J].Chinese Journal ofRock Mechanics and Engineering,2005,24(Sup 1):5020-5025.(in Chinese))
[12]席道瑛,刘斌,田象燕.饱和岩石的各向异性及非线性黏弹性响应[J].地球物理学报,2002,45(1):109-118.(XU Dao-ying,LIU Bin,TIAN Xiang-yan.Anisotropy and nonlinear viscoelastic behavior of saturated rocks[J].Chinese Journal of Geophysics,2002,45(1):109-118.(in Chinese))
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