人工冻结富水卵石土冻胀特性研究
A Study of the Frost Heaving Characteristics of the Artificially Frozen Rich Watered Pebble Soil
  
中文关键词:人工冻结地层  富水卵石土  水分迁移  冻胀率
英文关键词:artificially frozen stratum  rich watered pebble soil  water migration  frost heaving ratio
基金项目:
作者单位
吴镇 中铁工程设计咨询集团有限公司济南设计院山东济南250022 
王磊 中铁工程设计咨询集团有限公司济南设计院山东济南250022 
贾锋 中铁工程设计咨询集团有限公司济南设计院山东济南250022 
何亚梦 石家庄铁道大学土木工程学院河北石家庄050043 
吴泽 石家庄铁道大学土木工程学院河北石家庄050043 
摘要点击次数: 74
全文下载次数: 24
中文摘要:
      为探究富水卵石土在人工冻结法施工过程中的冻胀特性,通过设计不同含水量、不同冷端冻结温度的卵石土冻结试验组,来分析上述两种因素对土体的水分迁移及冻胀产生的影响。试验结果表明:在冻结过程中,温度梯度导致土体中水分重分布,试样底部含水量较初始含水量增加较为明显。从影响土体冻胀率的角度来看,土体冷端温度越高,冻胀率越大;土体含水量越高,冻胀率越大,并且开放系统的冻胀率高于封闭系统。在开放系统的冻胀试验中,外界水分的补给及分凝冻胀是富水卵石土试样冻胀的主要原因。
英文摘要:
      In order to explore the frost heaving characteristics of rich watered pebble soil in the process of the construction by the artificial freezing method, the effects of these two factors on the water migration and frost heaving of the soil are analyzed by means of designing the pebble soil freezing experimental groups with different water contents and different freezing temperatures. The test results show that during the freezing process, the temperature gradient results in the redistribution of the water inside the soil, in which case the increase in the water content of the bottom of the sample is more obvious than the initial water content. Speaking from the angle of affecting the frost heaving ratio of the soil, the higher the cold end temperature of the soil, the greater the frost heaving ratio, and the higher the water content of the soil, the greater the frost heaving ratio. In addition, the frost heaving ratio of the open system is higher than that of the closed system. External water replenishment and segregation frost heaving are the main causes for the frost heaving of rich watered pebble soil samples in the frost heaving experiments.
吴镇,王磊,贾锋,何亚梦,吴泽.人工冻结富水卵石土冻胀特性研究[J].国防交通工程与技术,2019,17(5):69~73
查看全文  查看/发表评论  下载PDF阅读器
关闭
你是第1529992访问者     谢谢你对本刊的关注与支持

版权所有《国防交通工程与技术》编辑部
编辑部地址:河北省石家庄市北二环东路17号石家庄铁道大学 联系电话:0311-87935805  E-mail: gfjt@stdu.edu.cn
本系统由北京勤云科技发展有限公司设计