振动荷载作用下近相变区冰-水相变迁移规律  

Migration Law of Ice-Water Phase Transition in Near-Phase Transition Zone Under Vibrational Loading

作　　者：周琨超 王志远 翟金榜 张泽[1,3,4,5] 孟祥熙[1] 袁名扬 Zhou Kunchao;Wang Zhiyuan;Zhai Jinbang;Zhang Ze;Meng Xiangxi;Yuan Mingyang(School of Civil Engineering and Transportation,Northeast Forestry University,Harbin 150040,China;Shaanxi Transportation Holding Group Co.,Ltd.,Xi’an 710065,China;Institute of Permafrost Research,Northeast Forestry University,Harbin 150040,China;Northeast Permafrost Zone Geological Environment System Field Scientific Observatory(Northeast Forestry University),Ministry of Education,Harbin 150040,China;Northeast Permafrost Zone Environment,Road Construction and Maintenance Collaborative Innovation Center(Northeast Forestry University),Harbin 150040,China)

机构地区：[1]东北林业大学土木与交通学院,哈尔滨150040 [2]陕西交通控股集团有限公司,西安710065 [3]东北林业大学冻土研究所,哈尔滨150040 [4]东北多年冻土区地质环境系统教育部野外科学观测站(东北林业大学),哈尔滨150040 [5]东北多年冻土区环境、道路建设与养护协同创新中心(东北林业大学),哈尔滨150040

出　　处：《吉林大学学报(地球科学版)》2025年第2期550-562,共13页Journal of Jilin University:Earth Science Edition

基　　金：国家自然科学基金项目(41771078);国家科技基础资源调查专项(2022FY100702);黑龙江省交通投资集团有限公司科研项目(JT-100000-ZC-FW-2021-0129);黑龙江省重点研发计划项目(指导类)(GZ20220052,GZ20220095)。

摘　　要：为了证明振动荷载作用下冰中存在水分迁移,并探究冰中水分迁移的规律,以人造柱状冰作为研究对象,开展了负温条件下的振动试验,通过改变环境温度和加载频率对冰中液态水的迁移进行研究。首先结合多年冻土地区公路所承受重型满载货车的载荷特征,以55 kPa为荷载幅值,循环振次设置为2880~28800次,开展了在-3℃、0.5 Hz条件下循环振动荷载分层柱状冰的水分迁移试验;然后在-5~-1℃、0.1~0.5 Hz条件下开展了循环振动荷载人造柱状冰的水分迁移试验;最后对试验数据进行拟合。结果表明:在振动荷载作用下,冰中的液态水沿结构裂隙向加载方向迁移;在不同的环境温度下,水分迁移量呈指数性增长;在不同的加载频率下,水分迁移量以分段函数的形式分阶段增长。当加载频率和荷载幅值恒定时,水分迁移量与增速峰值随环境温度升高而增大,随温度的下降而减小,-1℃测定的水分迁移量约为-5℃的3.75倍;越靠近熔点,增速峰值出现得越快,反之越慢。当环境温度和荷载幅值恒定时,水分迁移量与增速峰值随频率增大而增大,随频率的降低而减小,1.0 Hz测定的水分迁移量约为0.1 Hz的2.04倍;加载频率越快,增速峰值出现得越快,反之越慢。In order to prove the existence of water migration in ice under vibration loading and to investigate the law of water migration in ice,vibration tests were carried out under negative temperature conditions with artificial column ice as the research object,and the migration of liquid water in ice was investigated by changing the ambient temperature and loading frequency.First,in combination with the load characteristics of heavy fully loaded trucks borne by highways in permafrost areas,with 55 kPa as the load amplitude and the cyclic vibration frequency set to 2880-28800 times,the cyclic vibration loaded layered column ice water migration test was carried out under the conditions of-3℃,0.5 Hz;Then,the vibration test was carried out under the conditions of-5 to the water migration test of artificial column ice under cyclic vibration loading was carried out at-1.0℃and 0.1-0.5 Hz;Finally,the test data were fitted.The results show that:Under vibration loading,the liquid water in the ice migrates along the structural cracks in the loading direction;At different ambient temperatures,the amount of water migration increases exponentially;At different loading frequencies,the amount of water migration grows in stages in the form of a segmented function.When the loading frequency and load amplitude are constant,the amount of water migration and the peak growth rate increase with the increase of ambient temperature and decrease with the decrease of temperature,and the moisture migration measured at-1℃is about 3.75 times of that at-5℃;The closer to the melting point,the faster the peak growth rate occurs,and the slower the opposite is.When the ambient temperature and load amplitude are constant,the moisture migration and the peak growth rate increase with the increase of frequency and decrease with the decrease of frequency,and the amount of water migration measured at 1.0 Hz is about 2.04 times of that at 0.1 Hz;The faster the loading frequency is,the faster the peak growth rate appears,and the slower the opposite is.

关 键 词：水分迁移 近相变区 冰-水相变 振动荷载 环境温度 加载频率 

分 类 号：P694[天文地球—地质学]