Collapsibility evaluation of thick Malan loess based on field immersion tests
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摘要: 兰州地区工程建设场地向黄土梁峁区的大厚度湿陷性黄土地域扩展。兰州地区黄土湿陷特性的研究成果多集中于低阶地黄土状粉土，黄土梁峁区马兰黄土（Q3eol）有别于低阶地区黄土状粉土。为合理地评价黄土梁峁马兰黄土地湿陷特性，以兰州地区黄土梁峁的马兰黄土（Q3eol）为对象，基于现场浸水试验与室内试验成果，探讨兰州地区黄土梁峁的马兰黄土（Q3eol）湿陷性变化特征，对比了现场浸水试验与室内试验计算湿陷量之间的差异，提出了兰州地区黄土梁峁的马兰黄土（Q3eol）β0可采用1.0进行修正计算，为兰州地区黄土梁峁的马兰黄土（Q3eol）场地湿陷性评价及地基处理设计提供参考。Abstract: According to urban construction in Lanzhou, engineering construction sites are expanding to loess hilly and mound area with thick and collapsible loess. The research results on the collapsible characteristics of loess in Lanzhou are mainly focused on the loess silt with more low terrace engineering construction. Loess(Q3eol) in loess hilly and mound area is different from loess silt in low terrace area. To reasonably evaluate the collapsibility characteristics of loess hilly and mound area Malan loess, Malan loess (Q3eol) in Lanzhou was taken as the object, based on the field immersion test results and laboratory test results, the collapsibility change characteristics of Malan loess(Q3eol) of loess hilly and mound in Lanzhou were discussed. The difference between the field immersion test and the laboratory test were compared, and the β0 of loess(Q3eol) of hilly and mound area in Lanzhou can be modified by 1.0 were put forward, which provides reference for the collapsibility evaluation and foundation treatment design of Malan loess(Q3eol) in Lanzhou.
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表 1 各深度段自重湿陷量浸水试验实测值与室内试验计算值比值
试坑面以下
深度/m室内试验
计算值/mm试坑浸水
实测值/mm实测/计算
β实0～6 784 752 0.96 6～12 597 125 0.21 12～20 523 553 1.06 
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[1] 中华人民共和国住房和城乡建设部, 国家市场监督管理总局. 湿陷性黄土地区建筑标准: GB 50025–2018[S]. 北京: 中国建筑工业出版社, 2019. (Ministry of Housing and Urban-Rural Development of the People’s Republic of China, State Administration for Market Regulation. Standard for building construction in collapsible loess regions: GB 50025–2018[S]. Beijing: China Architecture & Building Press, 2019. (in Chinese)Ministry of Housing and Urban-Rural Development of the People’s Republic of China, State Administration for Market Regulation. Standard for building construction in collapsible loess regions: GB 50025–2018[S]. Beijing: China Architecture & Building Press, 2019. (in Chinese) [2] 王永炎, 笹嶋贞雄. 中国黄土研究的新进展[M]. 西安: 陕西人民出版社, 1985. (WANG Y Y, SASAJIMA S. The new development of loess studies in China[M]. Xi’an: Shaanxi People's Publishing House, 1985. (in Chinese)WANG Y Y, SASAJIMA S. The new development of loess studies in China[M]. Xi’an: Shaanxi People's Publishing House, 1985. (in Chinese) [3] 王永焱, 林在贯. 中国黄土的结构特征及物理力学性质[M]. 北京: 科学出版社, 1990. (WANG Y Y, LIN Z G. The structural characteristics and physical-mechanical properties of Chinese loess[M]. Beijing: Science Press, 1990. (in Chinese)WANG Y Y, LIN Z G. The structural characteristics and physical-mechanical properties of Chinese loess[M]. Beijing: Science Press, 1990. (in Chinese) [4] 罗宇生, 汪国烈. 湿陷性黄土研究与工程[M]. 北京: 中国建筑工业出版社, 2001. (LUO Y S, WANG G L. Research and engineering of loess collapsibility[M]. Beijing: China Architecture & Building Press, 2001. (in Chinese)LUO Y S, WANG G L. Research and engineering of loess collapsibility[M]. Beijing: China Architecture & Building Press, 2001. (in Chinese) [5] 张森安, 刘若琪. 兰州地区大厚度湿陷性黄土场地岩土工程问题[J]. 工程勘察, 2006, 28(S1): 344-348. (ZHANG S A, LIU R Q. Geotechnical problems of thick collapsible loess sites in the Lanzhou area[J]. Journal of Geotechnical Investigation & Surveying, 2006, 28(S1): 344-348. (in Chinese)ZHANG S A, LIU R Q. Geotechnical problems of thick collapsible loess sites in the Lanzhou area[J]. Journal of Geotechnical Investigation & Surveying, 2006, 28(S1): 344-348. (in Chinese) [6] 张森安, 项龙江. 兰州大厚度湿陷性黄土岩土工程勘察与地基处理方法的探讨[C]//第五届全国黄土地区工程建设学术交流会论文集. 沈阳: 中国工程建设标准化协会, 2007. (ZHANG S A, XIANG L J. Discussion on geotechnical investigation and foundation treatment methods for thick collapsible loess in Lanzhou[C]//National Loess Area Engineering Construction Academic Conference. Shenyang: China Association for Engineering Construction Standardization, 2007. (in Chinese)ZHANG S A, XIANG L J. Discussion on geotechnical investigation and foundation treatment methods for thick collapsible loess in Lanzhou[C]//National Loess Area Engineering Construction Academic Conference. Shenyang: China Association for Engineering Construction Standardization, 2007. (in Chinese) [7] 国家铁路局. 铁路工程特殊岩土勘察规程: TB 10038–2022[S]. 北京: 中国铁道出版社, 2022. (National Railway Administration of People’s Republic of China. Specification for special rock and soil investigation of railway engineering: TB 10038–2022[S]. Beijing: China Railway Publishing House, 2022. (in Chinese)National Railway Administration of People’s Republic of China. Specification for special rock and soil investigation of railway engineering: TB 10038–2022[S]. Beijing: China Railway Publishing House, 2022. (in Chinese) [8] 张森安. 兰州黄土梁峁场地地基土湿陷特性研究[J]. 施工技术, 2021(S1): 1850-1855. (ZHANG S A. Study on the collapsibility of loess foundation soil in Lanzhou[J]. Construction Technology, 2021(S1): 1850-1855. (in Chinese)ZHANG S A. Study on the collapsibility of loess foundation soil in Lanzhou[J]. Construction Technology, 2021(S1): 1850-1855. (in Chinese) [9] 陈 伟, 赵天宇. 不同地貌黄土的物理力学特性和湿陷性评价[J]. 安全与环境工程,2018,25(6):191-198. (CHEN W, ZHAO T Y. Study on physical and mechanical properties and evaluation of collapsible loess of different landforms[J]. Safety and Environmental Engineering,2018,25(6):191-198. (in Chinese)CHEN W, ZHAO T Y. Study on physical and mechanical properties and evaluation of collapsible loess of different landforms[J]. Safety and Environmental Engineering, 2018, 25（6）: 191-198. (in Chinese) [10] 黄雪峰, 陈正汉, 哈 双, 等. 大厚度自重湿陷性黄土场地湿陷变形特征的大型现场浸水试验研究[J]. 岩土工程学报,2006,28(3):382-389. (HUANG X F, CHEN Z H, HA S, et al. Large area field immersion tests on characteristics of deformation of self weight collapse loess under overburden pressure[J]. Chinese Journal of Geotechnical Engineering,2006,28(3):382-389. (in Chinese) doi: 10.3321/j.issn:1000-4548.2006.03.019HUANG X F, CHEN Z H, HA S, et al. Large area field immersion tests on characteristics of deformation of self weight collapse loess under overburden pressure[J]. Chinese Journal of Geotechnical Engineering, 2006, 28（3）: 382-389. (in Chinese) doi: 10.3321/j.issn:1000-4548.2006.03.019 [11] 周有禄, 武小鹏, 房建宏, 等. 大厚度黄土湿陷特性现场及室内试验对比研究[J]. 铁道建筑,2018,58(1):114-117. (ZHOU Y L, WU X P, FANG J H, et al. Comparative study on field and laboratory tests for collapsibility characteristics of large thickness loess[J]. Railway Engineering,2018,58(1):114-117. (in Chinese)ZHOU Y L, WU X P, FANG J H, et al. Comparative study on field and laboratory tests for collapsibility characteristics of large thickness loess[J]. Railway Engineering, 2018, 58（1）: 114-117. (in Chinese) [12] 张森安. 兰州地区离石黄土(Q2)工程性质研究[J]. 山西建筑,2014,40(26):53-55. (ZHANG S A. Study on engineering properties of the Lishi loess (Q2) in Lanzhou[J]. Shanxi Architecture,2014,40(26):53-55. (in Chinese)ZHANG S A. Study on engineering properties of the Lishi loess (Q2) in Lanzhou[J]. Shanxi Architecture, 2014, 40（26）: 53-55. (in Chinese) [13] 周 仁, 王鸿运, 张艳军, 等. 大厚度自重湿陷性黄土处理深度研究[J]. 施工技术,2018,47(16):8-11,88. (ZHOU R, WANG H Y, ZHANG Y J, et al. Research of thickness collapsible loess under overburden pressure[J]. Construction Technology,2018,47(16):8-11,88. (in Chinese)ZHOU R, WANG H Y, ZHANG Y J, et al. Research of thickness collapsible loess under overburden pressure[J]. Construction Technology, 2018, 47（16）: 8-11,88. (in Chinese) [14] 崔靖俞, 张吾渝, 解邦龙, 等. 西宁地区不同深度原状黄土湿陷性及微观机理研究[J]. 岩土工程学报,2019,41(S2):249-252. (CUI J Y, ZHANG W Y, XIE B L, et al. Collapsibility and microscopic mechanism of intact loess at different depths in Xining area[J]. Chinese Journal of Geotechnical Engineering,2019,41(S2):249-252. (in Chinese) doi: 10.11779/CJGE2019S2062CUI J Y, ZHANG W Y, XIE B L, et al. Collapsibility and microscopic mechanism of intact loess at different depths in Xining area[J]. Chinese Journal of Geotechnical Engineering, 2019, 41（S2）: 249-252. (in Chinese) doi: 10.11779/CJGE2019S2062 [15] 中华人民共和国住房和城乡建设部. 土工试验方法标准: GB/T 50123–2019[S]. 北京: 中国计划出版社, 2019. (Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Standard for geotechnical testing method: GB/T 50123–2019[S]. Beijing: China Planning Press, 2019. (in Chinese)Ministry of Housing and Urban-Rural Development of the People’s Republic of China. Standard for geotechnical testing method: GB/T 50123–2019[S]. Beijing: China Planning Press, 2019. (in Chinese) -
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