计算黄土卸荷湿陷量的模量折减法研究

doi:10.13722/j.cnki.jrme.2020.0783

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (62112 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Loess unloading collapse widely exists in test pits and the loess between piles. On the premise of ensuring the safety of loess engineering，it is important to boost the economy and rationality of engineering projects. To achieve efficient calculation of loess unloading collapse，the inverse analysis of loess collapse tests under constant loads is carried out，and the relationship between the collapse coefficient and the modulus reduction coefficient under constant loads is established according to that the deformation modulus of loess decreases after immersion. Furthermore，the inverse analysis of loess unloading collapse tests is performed，and the relationship between the unloading collapse coefficient and the modulus reduction coefficient is proposed. A modulus reduction method for calculating the loess unloading collapse is obtained with the help of the relationship between the collapse coefficient and the unloading collapse coefficient，and verified through evaluating the relationship between the unloading collapse coefficient and the modulus reduction coefficient by setting the unloading amount equal to zero to simulate the constant loading case. The research results provide an efficient way for analyzing loess unloading collapse and improve the collapse evaluation system.

Key words： soil mechanics loess collapse unloading modulus reduction unloading collapse amount

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JIN Xin1
	WANG Tiehang2
	ZHANG Yu1
	3
	ZHANG Meng1

Cite this article:

JIN Xin1,WANG Tiehang2,ZHANG Yu1, et al. A modulus reduction method for calculating loess unloading collapse[J]. , 2021, 40(7): 1473-1483.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0783 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I7/1473

[1]	胡志平，张丹，张亚国，等. 地下综合管廊结构斜穿活动地裂缝的变形破坏机制室内模型试验研究[J]. 岩石力学与工程学报，2019，38(12)：2 550-2 560.(HU Zhiping，ZHANG Dan，ZHANG Yaguo，et al Test study on deformation and failure mechanisms of utility tunnels obliquely crossing ground fissures[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(12)：2 550-2 560.(in Chinese))
[2]	李又云，谢柯，孙永梅，等. 浅埋黄土隧道复合地基受力变形分析及加固时机选择[J]. 岩石力学与工程学报，2019，38(11)：2 332-2 343. (LI Youyun，XIE Ke，SUN Yongmei，et al. Stress and deformation analysis and reinforcement time selection of composite foundations in shallow loess tunnels[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(11)：2 332-2 343.(in Chinese))
[3]	张玉伟，宋战平，翁效林，等. 大厚度黄土地层浸水湿陷对地铁隧道影响的模型试验研究[J]. 岩石力学与工程学报，2019，38(5)：1 030-1 040.(ZHANG Yuwei，SONG Zhanping，WENG Xiaolin，et al. Model test study on influence of water immersion induced collapsibility on subway tunnel in large thickness loess stratum[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(5)：1 030-1 040.(in Chinese))
[4]	中华人民共和国国家标准编写组. GB 50025—2018湿陷性黄土地区建筑标准[S]. 北京：中国建筑工业出版社，2018.(The National Standards Compilation Group of People¢s Republic of China. GB 50025—2018 Standard for building construction in collapsible loess regions[S]. Beijing：China Architecture and Building Press，2018.(in Chinese))
[5]	《工程地质手册》编委会. 工程地质手册[M]. 5版. 北京：中国建筑工业出版社，2018：506-508.(Editorial Board of 《Geological Engineering Handbook》. Geological engineering handbook[M]. 5th ed. Beijing：China Architecture and Building Press，2018：506-508.(in Chinese))
[6]	孔洋，阮怀宁，黄雪峰. DDC法复合黄土地基的原位浸水试验研究[J]. 土木工程学报，2017，50(11)：125-132.(KONG Yang，RUAN Huaining，HUANG Xuefeng，et al. In-situ soaking test on composite loess foundation with down-hole dynamic compaction(DDC)[J]. China Civil Engineering Journal，2017，50(11)：125-132.(in Chinese))
[7]	CHENG X，JING W，YIN C，et al. Stability parameter analysis of a composite foundation of an oil storage tank in a loess area treated with compaction piles[J]. Soils and Foundations，2018，58(2)：306-318.
[8]	朱彦鹏，杜晓启，杨校辉，等. 挤密桩处理大厚度自重湿陷性黄土地区综合管廊地基及其工后浸水试验研究[J]. 岩土力学，2019，40(8)：2 914-2 924.(ZHU Yanpeng，DU Xiaoqi，YANG Xiaohui，et al. Research on utility tunnel foundation treated by compaction piles and post-work immersion test in the self-weight collapsible loess area with large thickness[J]. Rock and Soil Mechanics，2019，40(8)： 2 914-2 924.(in Chinese))
[9]	SHI B，CHENG X，GONG L，LIU G. Selection design and parameter optimization of composite foundations in collapsible loess areas[J]. Geotechnical and Geological Engineering，2020，38(3)：3 175-3 201.
[10]	邵生俊，李骏，邵将，等. 大厚度湿陷性黄土地层的现场砂井浸水试验研究[J]. 岩土工程学报，2016，38(9)：1 549-1 558.(SHAO Shengjun，LI Jun，SHAO Jiang，et al. In-situ sand well immersion tests on self-weight collapsible loess site with large depth[J]. Chinese Journal of Geotechnical Engineering，2016，38(9)：1 549-1 558.(in Chinese))
[11]	武小鹏，王兰民，房建宏，等. 原状黄土地基渗水特性及其与自重湿陷的关系研究[J]. 岩土工程学报，2018，40(6)：1 002-1 010.(WU Xiaopeng，WANG Lanmin，FANG Jianhong，et al. Seepage characteristics and their relationship with self-weight collapse of intact loess ground[J]. Chinese Journal of Geotechnical Engineering，2018，40(6)：1 002-1 010.(in Chinese))
[12]	WANG L，SHAO S，SHE F. A new method for evaluating loess collapsibility and its application[J]. Engineering Geology，2020，264：105376.
[13]	邵生俊，李骏，李国良，等. 大厚度湿陷性黄土隧道现场浸水试验研究[J]. 岩土工程学报，2018，40(8)：1 395-1 404.(SHAO Shengjun，LI Jun，LI Guoliang，et al. Field immersion tests on tunnel in large-thickness collapsible loess[J]. Chinese Journal of Geotechnical Engineering，2018，40(8)：1 395-1 404.(in Chinese))
[14]	郑建国，邓国华，刘争宏，等. 黄土湿陷性分布不连续对湿陷变形的影响研究[J]. 岩土工程学报，2015，37(1)：165-170.(ZHENG Jianguo，DENG Guohua，LIU Zhenghong，et al. Influence of discontinuous distribution of collapsible loess on its deformation[J]. Chinese Journal of Geotechnical Engineering，2015，37(1)：165-170.(in Chinese))
[15]	MASHHOUR I，HANNA A. Drag load on end-bearing piles in collapsible soil due to inundation[J]. Canadian Geotechnical Journal，2016，53(12)：2 030-2 038.
[16]	朱彦鹏，杨校辉，马天忠，等. 黄土塬地区大直径长桩承载性状与优化设计研究[J]. 岩石力学与工程学报，2017，36(4)：1 012-1 023. (ZHU Yanpeng，YANG Xiaohui，MA Tianzhong，et al. Study on bearing behaviors and optimization design of large-diameter long pile foundation in loess subsoil[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(4)：1 012-1 023.(in Chinese))
[17]	RODRIGUEZ R E，CUNHA R P D，CAICEDO H B. Analysis of settlements in piled raft systems founded in soft soil under consolidation process[J]. Canadian Geotechnical Journal，2020，57(4)：537-548.
[18]	张爱军，邢义川，胡新丽，等. 伊犁黄土强烈自重湿陷性的影响因素分析[J]. 岩土工程学报，2016，38(增2)：117-122.(ZHANG Aijun，XING Yichuan，HU Xinli，et al. Influence factors of strong self-weight collapsibility of Ili loess[J]. Chinese Journal of Geotechnical Engineering，2016，38(Supp.2)：117-122.(in Chinese))
[19]	AN P，ZHANG A，XING Y，et al. Experimental study on setting characteristics of thick self-weight collapsible loess in Xinjiang Ili region in China using field immersion test[J]. Soils and Foundations，2018，58(6)：1 476-1 491.
[20]	金鑫，王铁行，赵再昆，等. 卸荷条件下黄土湿陷系数的计算方法及验证[J]. 岩土工程学报，2019，41(10)：1 959-1 966.(JIN Xin，WANG Tiehang，ZHAO Zaikun，et al. Method for calculating coefficient of collapsibility of loess under unloading[J]. Chinese Journal of Geotechnical Engineering，2019，41(10)：1 959-1 966.(in Chinese))
[21]	王铁行，金鑫，罗扬，等. 考虑卸荷作用的黄土湿陷性评价方法研究[J]. 岩土力学，2019，40(4)：1 281-1 290.(WANG Tiehang，JIN Xin，LUO Yang，et al. Evaluation method for loess collapse potential of unloading[J]. Rock and Soil Mechanics，2019，40(4)：1 281-1 290.(in Chinese))
[22]	中华人民共和国国家标准编写组. GB50025—2004 湿陷性黄土地区建筑规范[S]. 北京：中国建筑工业出版社，2004.(The National Standards Compilation Group of People¢s Republic of China. GB 50025—2004 Code for building construction in collapsible loess regions[S]. Beijing：China Architecture and Building Press，2004.(in Chinese))
[23]	黄雪峰，杨校辉，殷鹤，等. 湿陷性黄土场地湿陷下限深度与桩基中性点位置关系研究[J]. 岩土力学，2015，36(增2)：296-302. (HUANG Xuefeng，YANG Xiaohui，YIN He，et al. Study of relationship between maximum collapsing depth and neutral point position of pile foundation in collapsible loess ground[J]. Rock and Soil Mechanics，2015，36(Supp.2)：296-302.(in Chinese))
[24]	穆斯塔伐耶夫A A. 湿陷性黄土上地基与基础的计算[M]. 张中兴译. 北京：水利电力出版社，1984：25-26.(MUSTAVAEV A. A. Calculation of foundation on collapsible loess[M]. Supported by ZHANG Zhongxing. Beijing：Water Resources and Electric Power Press，1984：25-26.(in Chinese))
[25]	李明超，符家科，张野，等. 耦合岩石图像与锤击音频的岩性分类智能识别分析方法[J]. 岩石力学与工程学报，2020，39(5)：996-1 004. (LI Mingchao，FU Jiake，ZHANG Ye，et al. Intelligent recognition and analysis method of rock lithology classification based on coupled rock images and hammering audios[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(5)：996-1 004.(in Chinese))
[26]	PUGLIESE L，DE BIASE M，CHIDICHIMO F，et al. Modelling phosphorus removal efficiency of a reactive filter treating agricultural tile drainage water[J]. Ecological Engineering，2020，156：105968.
[27]	KESGIN E，AGACCIOGLU H，DOGAN A. Experimental and numerical investigation of drainage mechanisms at sports fields under simulated rainfall[J]. Journal of Hydrology，2020，580：124251.