国家自然科学基金(41371081)

作品数：9被引量：46H指数：4
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相关作者：刘建坤张益铭冯瑞玲吴立坚刘晖更多>>
相关机构：北京交通大学青海省交通科学研究院交通部公路科学研究院更多>>
相关期刊：《哈尔滨工业大学学报》《地下空间与工程学报》《Research in Cold and Arid Regions》《中南大学学报（自然科学版）》更多>>
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泥炭土的固结特性试验研究被引量：17
《地下空间与工程学报》2019年第5期1384-1392,共9页冯瑞玲 吴立坚 张益铭 
国家自然科学基金(51778048,41371081);铁路总公司项目(2016G003-B,2017G002-S)
沉降量大且沉降持续时间长是修建在泥炭土地基上的工程所面临的主要问题,而目前国内外学者对泥炭土固结特性的研究结果不尽一致。鉴于此,本文以云南某高速公路泥炭土路段为依托,参照一般土体的室内土工试验方法,对不同有机质含量的泥炭...
关键词：泥炭土 主固结比 次固结 先期固结压力 
冻融循环下粉质黏土不排水剪切性状的试验研究被引量：8
《中南大学学报（自然科学版）》2018年第6期1481-1490,共10页胡田飞 刘建坤 王青志 房建宏 
交通运输部应用基础研究计划(重点平台)项目(2014319363200); 国家自然科学基金资助项目(51378057,41371081)
以青藏高原粉质黏土为对象,进行冻融循环试验和三轴固结不排水剪切试验,研究冻融循环对压实粉质黏土应力-应变关系、孔隙水压力-应变关系、有效应力路径、临界状态线及抗剪强度指标等的影响。研究结果表明:试样在冻融循环前后的应力-应...
关键词：粉质黏土 冻融循环 孔隙水压力 有效应力路径 临界状态线 不排水抗剪强度指标 
冻融循环对含砂粉土力学性质的影响被引量：14
《哈尔滨工业大学学报》2018年第3期135-142,共8页刘晖 刘建坤 邰博文 房建宏 
国家自然科学基金(51378057,41371081);青海省科技项目(2013-J-770)
为了探究多年冻土区地表层的土体在冻融循环过程中力学性质的变化,通过对不同环境冷却温度、压实度、冻融循环次数、含水率和围压下的含砂粉土试样进行室内不固结不排水三轴试验,研究冻融循环后土体应力-应变关系曲线、破坏强度、弹性...
关键词：冻融循环 破坏强度 弹性模量 抗剪强度参数 显著性分析 
Experimental study of the effects of non-uniformly distributed fine soil on mechanical properties of Shenyang–Dandong Railway coarse-grained soil
《Research in Cold and Arid Regions》2015年第5期503-512,共10页QianMi Yu JianKun Liu JingYu Liu DingJun Lv TengFei Wang 
supported by the National Basic Research Program of China(973 program,Grant No.2012CB026104);the National Natural Science Foundation of China(Grant Nos.41271072,41371081 and 51378057)
The stress produced by repeated train loads decreases with increasing railway subgrade bed depth, and slightly weathered coarse particles of subgrade bed fillings can be broken at different levels under continuous loa...
关键词：fine soil non-uniform distribution freeze-thaw cycles soil mechanical properties 
Study on the sunny-shady slope effect on the subgrade of a high-speed railway in a seasonal frozen region被引量：2
《Research in Cold and Arid Regions》2015年第5期513-519,共7页QingZhi Wang BoWen Tai ZhenYa Liu JianKun Liu 
supported by the National Natural Science Foundation of China(Nos.51378057 and 41371081);Scientific and Technological Research and Development Plan of Chinese Railway Corporation(2014G003-A)
The temperature distributions of different parts of a subgrade were analyzed based on the results of three years of moni- toring data from the Harbin-Qiqihaer Passenger Dedicated Line, a high-speed railway, including ...
关键词：high-speed railway sunny-shady slope effect frost heave temperature field 
A method used to determine the upper thermal boundary of subgrade based on boundary layer theory被引量：1
《Research in Cold and Arid Regions》2015年第4期384-391,共8页QingBo Bai Xu Li YaHu Tian 
supported by the National Natural Science Foundation of China (Nos. 51378057, 41371081, and 41171064);the National Key Basic Research Program of China (973 Program, No. 2012CB026104)
In the numerical simulation of long-term subgrade temperature fields, the daily variation of soil temperature at a certain depth h is negligible. Such phenomenon is called the ＂boundary layer theory.＂ Depth h is def...
关键词：temperature field boundary layer PERMAFROST SUBGRADE equivalent thermal diffusivity 
Compressive strength and frost heave resistance of different types of semi-rigid base materials after freeze-thaw cycles被引量：4
《Research in Cold and Arid Regions》2015年第4期365-369,共5页ZhenYa Liu JingYu Liu QingZhi Wang JianKun Liu 
supported by the National Natural Science Foundation of China (Nos. 51378057 and 41371081)
Freeze-thaw damage is the most common disease of semi-rigid bases in cold regions, which may greatly affect the dura- bility of roadways. In this study, the compressive strength and frost resistance of four different ...
关键词：freeze-thaw cycles semi-rigid base stabilized base 
Thermal conductivity of reinforced soils: A literature review
《Research in Cold and Arid Regions》2014年第4期409-414,共6页Muge Elif Orakoglu JianKun Liu 
supported by the National Natural Science Foundation of China (Nos. 51378057, 41371081, and 41171064);the National 973 Project of China (No. 2012CB026104)
This paper aims a review of the literature related to soil reinforcements to achieve lower soil thermal conductivity （2）. The use of various natural and synthetic fibers, polymers, geosynthetics, agricultural waste/...
关键词：reinforced soil heat flux thermal conductivity 
The biaxial compression mechanical properties of crushed rock被引量：2
《Research in Cold and Arid Regions》2013年第4期433-439,共7页PengCheng Wang JianKun Liu Li Liu 
supported by National 973 Project of China (No. 2012CB026104);National Natural Science Foundation of China (Nos. 41171064, 41371081);the Fundamental Research Funds for the Central Universities (No. 2011JBZ009)
Crushed rock subgrade, as one of the roadbed-cooling methods, has been widely used in the Qinghai-Tibet Railway. Much attention has been paid on the cooling effect of crushed rock; however, the mechanical properties o...
关键词：crushed rock subgrade discrete element method particle flow code mechanical property biaxial compression 
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