循环冲击作用下风化红砂岩动态响应特性
|
摘要
针对循环冲击作用下风化红砂岩的动态响应特性,利用动静组合加载装置进行不同轴压、不同冲击荷载下的循环冲击试验,分析轴压和冲击荷载对其力学特性及能量耗散的影响。结果表明:保证入射波相同的情况下,透射波波峰随循环冲击次数的增加而增大,且透射波波峰存在峰值点;反射波呈"双峰",表现较为明显的2个峰值点和1个谷值点,且2峰1谷的到达时刻基本相同;当轴压一定时,随平均应变率增大,动态压缩强度逐渐减小,这也表明风化红砂岩存在较好的应变率效应;试样的能量利用率与冲击荷载和轴压之间存在负相关关系,即当冲击荷载和轴压处于较低水平时,试样的能量利用率较高;随轴压增大,能量利用率峰值逐渐减小,且不同冲击荷载作用下极大值点均出现在轴压为0 MPa处,其最大值为24%。
In view of the dynamic response characteristics of weathered red sandstone under cyclic impact,cyclic impact tests under different axial pressures and different impact loads were performed by dynamic-static coupling loading device. The effects of axial pressures and impact loads on mechanical properties and energy dissipation is analyzed. The following conclusions are drawn from the results:The peak of transmitted wave increases with the increase of the number of cyclic shocks with the same incident wave,and there is a peak point in transmission wave peak. The reflected wave has a"double peaks",it shows two obvious peak points and one valley point. The arrival times of the two peaks and one valley are basically the same. As the average strain rate increases,the dynamic compressive strength decreases gradually when the axial pressure is constant. It is show that the weathered red sandstone has good strain rate effect. The smaller the impact load and axial pressure,the greater the energy utilization rate. On the contrary,the greater the axial pressure,the smaller the energy utilization ratio. With the increase of axial pressure,the peak value of energy utilization rate decreases gradually. The maximum value under different impact loads occur at the axial pressure of 0 MPa,and the maximum value is 24%.
In view of the dynamic response characteristics of weathered red sandstone under cyclic impact,cyclic impact tests under different axial pressures and different impact loads were performed by dynamic-static coupling loading device. The effects of axial pressures and impact loads on mechanical properties and energy dissipation is analyzed. The following conclusions are drawn from the results:The peak of transmitted wave increases with the increase of the number of cyclic shocks with the same incident wave,and there is a peak point in transmission wave peak. The reflected wave has a"double peaks",it shows two obvious peak points and one valley point. The arrival times of the two peaks and one valley are basically the same. As the average strain rate increases,the dynamic compressive strength decreases gradually when the axial pressure is constant. It is show that the weathered red sandstone has good strain rate effect. The smaller the impact load and axial pressure,the greater the energy utilization rate. On the contrary,the greater the axial pressure,the smaller the energy utilization ratio. With the increase of axial pressure,the peak value of energy utilization rate decreases gradually. The maximum value under different impact loads occur at the axial pressure of 0 MPa,and the maximum value is 24%.
引文
[1]谢和平,许唯临,刘超,等.地下水利工程战略构想及关键技术展望[J].岩石力学与工程学报,2018,37(4):781-791.(XIE Heping,XU Weilin,LIU Chao,et al.The subversive idea and key technical prospects on underground hydraulic engineering[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(4):781-791.(in Chinese))
[2]谢和平,高明忠,张茹,等.地下生态城市与深地生态圈战略构想及其关键技术展望[J].岩石力学与工程学报,2017,36(6):1 301-1 313.(XIE Heping,GAO Mingzhong,ZHANG Ru,et al.The subversive idea and its key technical prospect on underground ecological city and ecosystem[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1 301-1 313.(in Chinese))
[3]钱七虎,戎晓力.中国地下工程安全风险管理的现状、问题及相关建议[J].岩石力学与工程学报,2008,27(4):649-655.(QIAN Qihu,RONG Xiaoli.State,issues and relevant recommendations for security risk management of underground engineering in China[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(4):649-655.(in Chinese))
[4]孔德森,孟庆辉,张伟伟,等.爆炸荷载作用下地铁隧道的冲击反应研究[J].振动与冲击,2012,31(12):68-72.(KONG Desen,MENG Qinhui,ZHANG Weiwei,et al.Shock responses of a metro tunnel subjected to explosive loads[J].Journal of Vibration and Shock,2012,31(12):68-72.(in Chinese))
[5]宋战平,杨腾添,张丹锋,等.溶洞对隧道(洞)稳定性影响的数值试验及现场监测分析[J].西安建筑科技大学学报:自然科学版,2014,46(4):484-491.(SONG Zhanping,YANG Tengtian,ZHANGDanfeng,et al.Experiments and field monitoring and analysis about the impact of existing cave on the stability of the tunnel[J].Journal of Xi?an University of Architecture and Technology:Natural Science,2014,46(4):484-491.(in Chinese))
[6]CHENG X,XU W,YUE C,et al.Seismic response of fluid-structure interaction of undersea tunnel during bidirectional earthquake[J].Ocean Engineering,2014,75(1):64-70.
[7]梁建文,朱俊.地下隧道横截面内地震动土作用分析[J].地震工程与工程振动,2016,36(4):54-69.(LIANG Jianwen,ZHU Jun.Seismic soil pressure on underground tunnel in transverse direction[J].Earthquake Engineering and Engineering Dynamics,2016,36(4):54-69.(in Chinese))
[8]贾磊,解咏平,李慎奎.爆破振动对邻近隧道衬砌安全的数值模拟分析[J].振动与冲击,2015,34(11):173-177.(JIA Lei,XIEYongping,LI Shenkui.Numerical simulation for impact of blasting vibration on nearby tunnel lining safety[J].Journal of Vibration and Shock,2015,34(11):173-177.(in Chinese))
[9]JAYASINGHE L,ZHOU H,GOH A,et al.Pile response subjected to rock blasting induced ground vibration near soil-rock interface[J].Computers and Geotechnics,2017,82:1-15.
[10]金解放,李夕兵,钟海兵.三维静载与循环冲击组合作用下砂岩动态力学特性研究[J].岩石力学与工程学报,2013,32(7):1 358-1 372.(JIN Jiefang,LI Xibing,ZHONG Haibing.Study of dynamic mechanical characteristic of sandstone subjected to three-dimensional coupled static-cyclic impact loadings[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(7),1 358-1 372.(in Chinese))
[11]宫凤强,陆道辉,李夕兵,等.不同应变率下砂岩动态强度准则的试验研究[J].岩土力学,2013,34(9):2 433-2 441.(GONG Fengqiang,LU Daohui,LI Xibing,et al.Experimental research of sandstone dynamic strength criterion under different strain rates[J].Rock and Soil Mechanics,2013,34(9):2 433-2 441.(in Chinese))
[12]平琦,马芹永,卢小雨,等.被动围压条件下岩石材料冲击压缩试验研究[J].振动与冲击,2014,33(2):55-59.(PING Qi,MAQingyong,LU Xiaoyu,et al.Impact compression test of rock material under passive confining pressure conditions[J].Journal of Vibration and Shock,2014,33(2):55-59.(in Chinese))
[13]皮爱如,沈兆武,王肖钧.土壤冲击特性的实验研究[J].振动与冲击,2003,(3):30-31.(PI Airu,SHEN Zhaowu,WANG Xiaojun.Experimental study of impact characteristic of soil[J].Journal of Vibration and Shock,2003,(3):30-31.(in Chinese))
[14]刘志强,柳家凯,王博,等.冻结黏土动态力学特性的SHPB试验研究[J].岩土工程学报,2014,36(3):409-416.(LIU Zhiqiang,LIU Jiakai,WANG Bo,et al.Dynamic characteristics of frozen clay by using SHPB tests[J].Chinese Journal of Geotechnical Engineering,2014,36(3):409-416.(in Chinese))
[15]高常辉,马芹永,马冬冬.主动围压作用下水泥粉质黏土SHPB试验与分析[J].振动与冲击,2018,37(14):162-167.(GAO Changhui,MA Qinyong,MA Dongdong.SHPB test and analysis on cemented silty clay under confining pressure conditions[J].Journal of Vibration and Shock,2018,37(14):162-167.(in Chinese))
[16]刘俊新,陈忠富,徐伟芳,等.压实粘性土动态力学性能的SHPB试验[J].西南交通大学学报,2011,46(6):960-965.(LIU Junxin,CHEN Zhongfu,XU Weifang,et al.SHPB experiment of dynamic mechanical behavior of compacted clay[J].Journal of Southwest Jiaotong University,2011,46(6):960-965.(in Chinese))
[17]丁育青,汤文辉,徐鑫,等.单轴压缩下非饱和黏土动态力学性能试验研究[J].岩土力学,2013,34(9):2 546-2 550.(DENGYuqing,TANG Wenhui,XU Xin,et al.Experimental study of dynamic mechanical behaviors of unsaturated clay subjected to uniaxial loading[J].Rock and Soil Mechanics,2013,34(9):2 546-2 550.(in Chinese))
[18]徐文彬,宋卫东,王东旭,等.三轴压缩条件下胶结充填体能量耗散特征分析[J].中国矿业大学学报,2014,43(5):808-814.(XUWenbin,SONG Weidong,WANG Dongxu,et al.Energy dissipation properties of cement backfill body under triaxial compression conditions[J].Journal of China University of Mining and Technology,2014,43(5):808-814.(in Chinese))
[19]闫澍旺,禚瑞花,王武刚,等.冲击荷载作用下岩土材料能量耗散的有限元分析[J].工程力学,2013,30(5):160-164.(YAN Shuwang,ZHUO Ruihua,WANG Wugang,et al.Finite element analysis on energy dissipation of geo-materials incurred by impacting load[J].Engineering Mechanics,2013,30(5):160-164.(in Chinese))
[20]吕太洪,陈小伟,陈刚.基于混凝土试件SHPB实验的波形特征分析[J].解放军理工大学学报:自然科学版,2016,17(4):345-349.(LU Taihong,CHEN Xiaowei,CHEN Gang.Waveform features of split Hopinson pressure bar tests of concrete specimen[J].Journal of PLA University of Science and Technology:Natural Science,2016,17(4):345-349.(in Chinese))
[2]谢和平,高明忠,张茹,等.地下生态城市与深地生态圈战略构想及其关键技术展望[J].岩石力学与工程学报,2017,36(6):1 301-1 313.(XIE Heping,GAO Mingzhong,ZHANG Ru,et al.The subversive idea and its key technical prospect on underground ecological city and ecosystem[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1 301-1 313.(in Chinese))
[3]钱七虎,戎晓力.中国地下工程安全风险管理的现状、问题及相关建议[J].岩石力学与工程学报,2008,27(4):649-655.(QIAN Qihu,RONG Xiaoli.State,issues and relevant recommendations for security risk management of underground engineering in China[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(4):649-655.(in Chinese))
[4]孔德森,孟庆辉,张伟伟,等.爆炸荷载作用下地铁隧道的冲击反应研究[J].振动与冲击,2012,31(12):68-72.(KONG Desen,MENG Qinhui,ZHANG Weiwei,et al.Shock responses of a metro tunnel subjected to explosive loads[J].Journal of Vibration and Shock,2012,31(12):68-72.(in Chinese))
[5]宋战平,杨腾添,张丹锋,等.溶洞对隧道(洞)稳定性影响的数值试验及现场监测分析[J].西安建筑科技大学学报:自然科学版,2014,46(4):484-491.(SONG Zhanping,YANG Tengtian,ZHANGDanfeng,et al.Experiments and field monitoring and analysis about the impact of existing cave on the stability of the tunnel[J].Journal of Xi?an University of Architecture and Technology:Natural Science,2014,46(4):484-491.(in Chinese))
[6]CHENG X,XU W,YUE C,et al.Seismic response of fluid-structure interaction of undersea tunnel during bidirectional earthquake[J].Ocean Engineering,2014,75(1):64-70.
[7]梁建文,朱俊.地下隧道横截面内地震动土作用分析[J].地震工程与工程振动,2016,36(4):54-69.(LIANG Jianwen,ZHU Jun.Seismic soil pressure on underground tunnel in transverse direction[J].Earthquake Engineering and Engineering Dynamics,2016,36(4):54-69.(in Chinese))
[8]贾磊,解咏平,李慎奎.爆破振动对邻近隧道衬砌安全的数值模拟分析[J].振动与冲击,2015,34(11):173-177.(JIA Lei,XIEYongping,LI Shenkui.Numerical simulation for impact of blasting vibration on nearby tunnel lining safety[J].Journal of Vibration and Shock,2015,34(11):173-177.(in Chinese))
[9]JAYASINGHE L,ZHOU H,GOH A,et al.Pile response subjected to rock blasting induced ground vibration near soil-rock interface[J].Computers and Geotechnics,2017,82:1-15.
[10]金解放,李夕兵,钟海兵.三维静载与循环冲击组合作用下砂岩动态力学特性研究[J].岩石力学与工程学报,2013,32(7):1 358-1 372.(JIN Jiefang,LI Xibing,ZHONG Haibing.Study of dynamic mechanical characteristic of sandstone subjected to three-dimensional coupled static-cyclic impact loadings[J].Chinese Journal of Rock Mechanics and Engineering,2013,32(7),1 358-1 372.(in Chinese))
[11]宫凤强,陆道辉,李夕兵,等.不同应变率下砂岩动态强度准则的试验研究[J].岩土力学,2013,34(9):2 433-2 441.(GONG Fengqiang,LU Daohui,LI Xibing,et al.Experimental research of sandstone dynamic strength criterion under different strain rates[J].Rock and Soil Mechanics,2013,34(9):2 433-2 441.(in Chinese))
[12]平琦,马芹永,卢小雨,等.被动围压条件下岩石材料冲击压缩试验研究[J].振动与冲击,2014,33(2):55-59.(PING Qi,MAQingyong,LU Xiaoyu,et al.Impact compression test of rock material under passive confining pressure conditions[J].Journal of Vibration and Shock,2014,33(2):55-59.(in Chinese))
[13]皮爱如,沈兆武,王肖钧.土壤冲击特性的实验研究[J].振动与冲击,2003,(3):30-31.(PI Airu,SHEN Zhaowu,WANG Xiaojun.Experimental study of impact characteristic of soil[J].Journal of Vibration and Shock,2003,(3):30-31.(in Chinese))
[14]刘志强,柳家凯,王博,等.冻结黏土动态力学特性的SHPB试验研究[J].岩土工程学报,2014,36(3):409-416.(LIU Zhiqiang,LIU Jiakai,WANG Bo,et al.Dynamic characteristics of frozen clay by using SHPB tests[J].Chinese Journal of Geotechnical Engineering,2014,36(3):409-416.(in Chinese))
[15]高常辉,马芹永,马冬冬.主动围压作用下水泥粉质黏土SHPB试验与分析[J].振动与冲击,2018,37(14):162-167.(GAO Changhui,MA Qinyong,MA Dongdong.SHPB test and analysis on cemented silty clay under confining pressure conditions[J].Journal of Vibration and Shock,2018,37(14):162-167.(in Chinese))
[16]刘俊新,陈忠富,徐伟芳,等.压实粘性土动态力学性能的SHPB试验[J].西南交通大学学报,2011,46(6):960-965.(LIU Junxin,CHEN Zhongfu,XU Weifang,et al.SHPB experiment of dynamic mechanical behavior of compacted clay[J].Journal of Southwest Jiaotong University,2011,46(6):960-965.(in Chinese))
[17]丁育青,汤文辉,徐鑫,等.单轴压缩下非饱和黏土动态力学性能试验研究[J].岩土力学,2013,34(9):2 546-2 550.(DENGYuqing,TANG Wenhui,XU Xin,et al.Experimental study of dynamic mechanical behaviors of unsaturated clay subjected to uniaxial loading[J].Rock and Soil Mechanics,2013,34(9):2 546-2 550.(in Chinese))
[18]徐文彬,宋卫东,王东旭,等.三轴压缩条件下胶结充填体能量耗散特征分析[J].中国矿业大学学报,2014,43(5):808-814.(XUWenbin,SONG Weidong,WANG Dongxu,et al.Energy dissipation properties of cement backfill body under triaxial compression conditions[J].Journal of China University of Mining and Technology,2014,43(5):808-814.(in Chinese))
[19]闫澍旺,禚瑞花,王武刚,等.冲击荷载作用下岩土材料能量耗散的有限元分析[J].工程力学,2013,30(5):160-164.(YAN Shuwang,ZHUO Ruihua,WANG Wugang,et al.Finite element analysis on energy dissipation of geo-materials incurred by impacting load[J].Engineering Mechanics,2013,30(5):160-164.(in Chinese))
[20]吕太洪,陈小伟,陈刚.基于混凝土试件SHPB实验的波形特征分析[J].解放军理工大学学报:自然科学版,2016,17(4):345-349.(LU Taihong,CHEN Xiaowei,CHEN Gang.Waveform features of split Hopinson pressure bar tests of concrete specimen[J].Journal of PLA University of Science and Technology:Natural Science,2016,17(4):345-349.(in Chinese))
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |