东南大学交通学院,江苏 南京 211100
张煌(1994—),男,硕士研究生。主要从事填土地基工程研究。E⁃mail:zhoyyx99@163.com
纸质出版:2021-12-15
移动端阅览
张煌,邓松,万星等.乌鲁木齐机场戈壁砾石土填料的工程特性试验研究[J].防灾减灾工程学报,2021,41(06):1301-1307.
ZHANG Huang,DENG Song,WAN Xing,et al.Experimental Study on Engineering Properties of Gobi Gravel Soil in Urumqi Airport Foundation[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1301-1307.
张煌,邓松,万星等.乌鲁木齐机场戈壁砾石土填料的工程特性试验研究[J].防灾减灾工程学报,2021,41(06):1301-1307. DOI: 10.13409/j.cnki.jdpme.201910051.
ZHANG Huang,DENG Song,WAN Xing,et al.Experimental Study on Engineering Properties of Gobi Gravel Soil in Urumqi Airport Foundation[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(06):1301-1307. DOI: 10.13409/j.cnki.jdpme.201910051.
以新疆乌鲁木齐机场改扩建工程中道基填筑拟采用的戈壁砾石土填料为研究对象,开展了戈壁砾石土的颗粒分析、表面振动压实、点荷载强度等物理力学试验,对其颗粒特征、压实特性以及大粒径砾石强度展开了探讨。结果表明:该地区戈壁砾石土不均匀系数
C
u
为37.9,曲率系数
C
c
为2.12,属于级配良好的砾类土,且填料在1~2 mm粒组处存在一定程度的缺失;不同粗颗粒含量戈壁土均存在明显的最优含水率与最大干密度,最大干密度随含水率变化呈现抛物线形式,且随着填料粗颗粒含量的增加而增加;天然级配的戈壁砾石土粗颗粒含量超过70%,最大干密度可达2.41 g/cm
3
;另外,戈壁砾石土中大块砾石的强度较高,自然风干状态下单轴抗压强度的平均值约为60 MPa。试验得出乌鲁木齐机场建设采用的天然级配的戈壁砾石土是一种非常好的道基填筑材料,研究结果亦可为类似工程提供参考。
Gobi gravel soil was adopted as fillings in the expansion construction of Urumqi International Airport. A series of physical and mechanical tests including particle gradation, surface vibration compaction and point load strength tests were conducted to analyze particle features, compaction characteristics and particle strength of Gobi gravel soil. The results indicate that Gobi gravel soil is well graded with a non-uniform coefficient Cu of 37.9 and a curvature coefficient Cc of 2.12, and there exists an extent of missing in the grain group from 1mm to 2mm. The optimum moisture content and maximum dry density of Gobi gravel soil change with coarse particle content predominantly. The maximum dry density varies with moisture content in a parabolic form, and increases with coarse particle content constantly. The maximum dry density of natural Gobi gravel soil reaches 2.41g/cm3 with more than 70% of coarse particle content. The large particle of Gobi gravel soil is featured by high strength, and the average uniaxial compressive strength in natural air-dried state is about 60 MPa. The tests show that natural graded Gobi gravel soil is a kind of well-performed subgrade filling material for the construction of Urumqi Airport. The conclusions can also provide suggestions for similar projects.
张立刚 , 刘重庆 , 杨有海 . 戈壁地区高速铁路路基施工工艺研究 [J]. 路基工程 , 2011 ( 4 ): 123 - 125 .
Zhang L G , Liu Ch Q , Yang Y H . Study on high-speed railway subgrade construction technology in Gobi Region [J]. Subgrade Engineering , 2011 ( 4 ): 123 - 125 . (in Chinese)
杨有海 , 赖国泉 . 戈壁地区高速铁路路基填筑试验研究 [J]. 铁道学报 , 2011 , 33 ( 3 ): 77 - 83 .
Yang Y H , Lai G Q . Research on filling test of high-speed railway subgrade in the Gobi Desert [J]. Journal of The China Railway Society , 2011 , 33 ( 3 ): 77 - 83 . (in Chinese)
夏琼 , 杨有海 . 兰新第 2 双线铁路路基戈壁土填料试验研究 [J]. 中国铁道科学 , 2010 , 31 ( 6 ): 1 - 6 .
Xia Q , Yang Y H . Experimental study on the gobi soil filling for the subgrade of the second double-track in Lanzhou-Xinjiang railway [J]. China Railway Science , 2010 , 31 ( 6 ): 1 - 6 . (in Chinese)
苗学云 , 屈耀辉 . 兰新二线新疆段戈壁土地基沉降预测分析 [J]. 路基工程 , 2015 ( 4 ): 27 - 31 .
Miao X Y , Qu Y H . Prediction analysis of gobi soil foundation settlement of Xinjiang section of Lanzhou-Xinjiang railway line 2 [J]. Subgrade Engineering , 2015 ( 4 ): 27 - 31 . (in Chinese)
Mokwa R L , Trimble N R . Permeability of coarse-grain soil from void space and pore distribution [C]∥ Geocongress . New Orleans : American Society of Civil Engineers , 2008 .
冯善恒 . 戈壁土地基加固方法及其沉降预测研究 [D]. 长沙 : 中南大学 , 2011 .
Feng Sh H . Study on reinforcement method and settlement prediction of gobi soil foundation [D]. Changsha : Central South University , 2011 . (in Chinese)
李鲲 . 戈壁地区高速铁路地基处理与填筑技术研究 [D]. 长沙 : 中南大学 , 2012 .
Li K . Research on ground treatment and filling technology of high speed railway in gobi area [D]. Changsha : Central South University , 2012 . (in Chinese)
李晓柱 , 刘洋 , 吴顺川 . 堆石坝现场碾压试验与离散元数值分析 [J]. 岩石力学与工程报 , 2013 , 32 ( 增2 ): 3123 - 3133 .
Li X Zh , Liu Y , Wu Sh Ch . Field roller compaction test and discrete element analysis of rockfill dam [J]. Chinese Journal of Rock Mechanics and Engineering , 2013 , 32 ( Sup 2 ): 3123 - 3133 . (in Chinese)
Huang D , Yue P , Liu C , et al . Discussion about analysis method for particle composition of coarse-grained soil and its compaction test [C]∥ Twelfth Cota International Conference of Transportation Professionals . New Orleans : American Society of Civil Engineers , 2012 .
李鲲 . 高速铁路路基戈壁土填料工程特性试验研究 [J]. 铁道建筑 , 2013 ( 6 ): 91 - 96 .
Li K . Experimental study on engineering characteristics of Gobi soil packing for high-speed railway subgrade [J]. Railway Engineering , 2013 ( 6 ): 91 - 96 . (in Chinese)
周志军 . 土石混填路基压实质量控制方法研究 [D]. 西安 : 长安大学 , 2006 .
Zhou Zh J . Study on controlling methods of compactive quality of subgrade filled with earth-rock mixtures [D]. Xi'an : Chang'an University , 2006 . (in Chinese)
公路土工试验规程 : JTG E40—2007 [S]. 北京 : 人民交通出版社 , 2007 .
Test methods of soils for highway engineering : JTGE40—2007 [S]. Beijing : China Communications Press , 2007 . (in Chinese)
包卫星 , 郭小龙 , 杨万精 . 干旱荒漠区天然砂砾路基填料压实特性分析 [J]. 中国公路报 , 2017 , 30 ( 2 ): 19 - 24 .
Bao W X , Guo X L , Yang W J . Analysis on compaction characteristics of natural gravel for subgrade filling in arid desert region [J]. China Journal of Highway and Transport , 2017 , 30 ( 2 ): 19 - 24 . (in Chinese)
郭庆国 . 粗粒土的工程特性及应用 [M]. 南京 : 黄河水 利出版社 , 1998 .
Guo Q G . Engineering characteristics and application of coarse-grained soil [M]. Nanjing : The Yellow River Water Conservancy Press , 1998 . (in Chinese)
刘鹏 , 康馨 , 陈卓 , 等 . 高铁路基粗颗粒土非饱和水力学及微观特性研究 [J]. 岩土工程学报 , 2019 , 41 ( 增1 ): 141 - 144 .
Liu P , Kang X , Chen Zh , et al . Microstructural and hydraulic properties of compacted high-speed Rail Subgrade Coarse Soils [J]. Chinese Journal of Geotechnical Engineering , 2019 , 41 ( Sup 1 ): 141 - 144 . (in Chinese)
熊毅 . 最优含水率与粗粒含量关系探究 [J]. 土工基础 , 2019 , 33 ( 2 ): 220 - 224 .
Xiong Y . Relationship between optimal moisture content and coarse grain content in granular soils [J]. Soil Engineering and Foundation , 2019 , 33 ( 2 ): 220 - 224 . (in Chinese)
0
浏览量
0
下载量
2
CSCD
关联资源
相关文章
相关作者
相关机构
苏公网安备32010202012147号
