Development of centrifugal model test facility for frost-heave of channels
HUANG Ying-hao1, 2, CAI Zheng-yin1, 2, ZHANG Chen1, 2, XU Guang-ming1, 2, HONG Jian-zhong3, ZHAO Bao-zhong3
1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024, China; 2. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China; 3. General Engineering Research Institute, China Academy of Engineering Physics, Mianyang 621900, China
Abstract:Frost-heave damage is the main reason for the channels in seasonal frozen regions. A new device is developed for simulating the frost-heave phenomenon of channels. It mainly includes the freeze-thaw model container, the circulating cooling water system and the measurement control system. The freeze-thaw model container consists of internal and external structures, and thermal insulation materials are filled between them. The circulating cooling water system adopts 12 groups of semiconductor chilling plates, and cooling or heating is accomplished by the Peltier effects. The high-pressure pump combined with the air cooling radiator realizes a continuous cooling for the system without hydraulic rotating joints. The installation device for the direct rebound displacement sensors is developed to ensure the accurate measurement. The whole device is used to study the frost-heave damage of a channel. The test results show a good regularity with correct simulation of both the temperature and displacement fields, indicating that this facility is effective for the simulation tests on frost-heave of channels.
黄英豪, 蔡正银, 张晨, 徐光明, 洪建忠, 赵宝忠. 渠道冻胀离心模型试验设备的研制[J]. 岩土工程学报, 2015, 37(4): 615-621.
HUANG Ying-hao, CAI Zheng-yin, ZHANG Chen, XU Guang-ming, HONG Jian-zhong, ZHAO Bao-zhong. Development of centrifugal model test facility for frost-heave of channels. Chinese J. Geot. Eng., 2015, 37(4): 615-621.
[1] 陈肖柏, 刘建坤, 刘鸿旭, 等. 土的冻结作用于地基[M].北京: 科学出版社, 2006. (CHEN Xiao-bai, LIU Jian-kun, LIU Hong-xu, et al. Frost action of soil and foundation engineering[M]. Beijing: Science Press, 2006. (in Chinese)) [2] 朱强. 我国渠道冻胀防治综述[J]. 防渗技术, 1996, 2(2) : 7-15. (ZHU Qiang. Control of canal frost heave in north china[J]. Technique of Seepage Prevention, 1996, 2(2): 7-15. (in Chinese)) [3] 吴志强, 蔡正银, 黄英豪, 等. 含水率和含盐量对冻土无侧限抗压强度影响的试验研究[J]. 岩土工程学报, 2014, 36(9): 1580-1586 (WU Zhi-qiang, CAI Zheng-yin, HUANG Ying-hao, et al. Influence of water and salt contents on strength of frozen soils[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1580-1586. (in Chinese)) [4] 周振民, 徐苏容, 刘月. 黄河下游引黄灌区衬砌渠道工程防冻胀破坏措施研究[J]. 水利与建筑工程学报, 2005, 3(1): 5-9. (ZHOU Zhen-min, XU Su-rong, LIU Yue. Control measures for frost heaving failure of concrete-lined canal in Yinhuang irrigation area of downstream of Yellow River[J]. Journal of Water Resources and Architectural Engineering, 2005, 3(1): 5-9. (in Chinese)) [5] 王正中, 刘旭东, 陈立杰, 等. 刚性衬砌渠道不同纵缝削减冻胀效果的数值模拟[J]. 农业工程学报, 2009, 25(11): 1-6. (WANG Zheng-zhong, LIU Xu-dong, CHEN Li-jie, et al. Computer simulation of frost heave for concrete lining canal with different longitudinal joints[J]. Transactions of the Chinese Society of Agricultural Engineering, 2009, 25(11): 1-6. (in Chinese)) [6] 吴志强. 北疆渠基土冻胀特性的试验研究[D]. 南京: 南京水利科学研究院, 2014. (WU Zhi-qiang. Experimental study on frost heaving properties of north Xinjiang channel soil[D]. Nanjing: Nanjing Hydraulic Research Institute, 2014. (in Chinese)) [7] 赖远明, 张耀, 张淑娟, 等. 超饱和含水率和温度对冻结砂土强度的影响[J]. 岩土力学, 2007, 29(6): 3665-3670. (LAI Yuan-ming, ZHANG Yao, ZHANG Shu-juan, et al. Experimental study of strength of frozen sandy soil under different water contents and temperatures[J]. Rock and Soil Mechanics, 2007, 29(6): 3665-3670. (in Chinese)) [8] SHEN M, LADANYI B. Modelling of coupled heat, moisture and stress field in freezing soil[J]. Cold Regions Science and Technology, 1987, 14: 237-246. [9] 李国玉, 喻文兵, 马巍, 等. 甘肃省公路沿线典型地段含盐量对冻胀盐胀特性影响的试验研究[J]. 岩土力学, 2009, 30(8): 2276-2280. (LI Guo-yu, YU Wen-bing, MA Wei, et al. Experimental study of characteristics of frost and salt heaves of saline highway foundation soils in seasonally frozen regions in Gansu Province[J]. Rock and Soil Mechanics,2009, 30(8): 2276-2280. (in Chinese)) [10] 包卫星, 杨晓华, 谢永利. 典型天然盐渍土多次冻融循环盐胀试验研究[J]. 岩土工程学报, 2006, 28(11): 1991-1995. (BAO Wei-xing, YANG Xiao-hua, XIE Yong-li. Research on salt expansion of representative crude saline soil under freezing and thawing cycles[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(11): 1991-1995. (in Chinese)) [11] 马巍, 王大雁. 中国冻土力学研究50a回顾与展望[J]. 岩土工程学报, 2012, 34(4): 625-640. (MA Wei, WANG Da-yan. Studies on frozen soil mechanics in China in past 50 years and their prospect[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(4): 625-640. (in Chinese)) [12] ZHANG Li-xin, PU Yi-bin, LIAO Quan-rong, et al. Dynamic investigation on the coupled changing process of moisture and density fields in freezing soil[J]. Science in China, 1999, 42(2): 141-145. [13] 吴紫汪, 马巍, 蒲毅彬, 等. 冻土蠕变变形特征的细观分析[J]. 岩土工程学报, 1997, 19(3): 1-6. (WU Zi-wang, MA Wei, PU Yi-bin, et al. Submicroscopic analysis on deformation characteristics in creep process of frozen soil[J]. Chinese Journal of Geotechnical Engineering, 1997, 19(3): 1-6. (in Chinese)) [14] LI Zhuo, LIU Si-hong, WANG Liu-jiang. Experimental study on the effect frost heave prevention using soilbags[J]. Cold Regions Science and Technology, 2013, 85: 109-116. [15] KETCHAM S A, BLACK P B, PRETTO R. Frost heave Loading of constrained footing by centrifuge modeling[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123: 874-880. [16] 陈湘生, 濮家骝, 殷昆亭, 等. 地基冻-融循环离心模型试验研究[J]. 清华大学学报(自然科学版), 2002, 42(4): 531-534. (CHEN Xiang-sheng, PU Jia-liu, YIN Kun-ting, et al. Centrifuge modelling tests of foundation undergoing two cycles of frost heave and thaw settlement[J]. Journal of Tsinghua University (Natural Science), 2002, 42(4): 531-534. (in Chinese)) [17] CHEN Xiang-sheng, SMITH C C, SCHOFIELD A N. Frost heave of pipelines: centrifuge and 1 g model tests[R]. Cambridge: Cambridge Unversity Technical Report, 1993.