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[1]高始军.高速铁路地基膨胀泥岩变形试验及计算研究*[J].中国安全生产科学技术,2021,17(5):33-38.[doi:10.11731/j.issn.1673-193x.2021.05.005]
　GAO Shijun.Test and calculation study on deformation of foundation expansive mudstone in high-speed railway[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(5):33-38.[doi:10.11731/j.issn.1673-193x.2021.05.005]
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高速铁路地基膨胀泥岩变形试验及计算研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年5期
页码:
33-38
栏目:
学术论著
出版日期:
2021-05-31

文章信息/Info

Title:
Test and calculation study on deformation of foundation expansive mudstone in high-speed railway
文章编号:
1673-193X(2021)-05-0033-06
作者:
高始军
（中铁十四局集团大盾构工程有限公司，江苏 南京 211880)
Author(s):
GAO Shijun
(China Railway 14th Bureau Group Shield Engineering Co.,Ltd.,Nanjing Jiangsu 211880,China)
关键词:
铁路地基; 膨胀泥岩; 模型试验; 理论计算; 上覆荷载; 含水率
Keywords:
railway foundation;  expansive mudstone;  model test;  theoretical calculation;  overburden load;  water content
分类号:
X951;U21
DOI:
10.11731/j.issn.1673-193x.2021.05.005
文献标志码:
A
摘要:
为研究某高铁地基膨胀泥岩在含水率和上覆荷载共同作用下的膨胀变形规律，通过室内试验和理论推导，分析地基膨胀泥岩的膨胀量随时间增长及含水率增加的变化规律。结果表明：无荷载地基膨胀泥岩的膨胀量随时间增加呈阶梯式持续增长趋势；有荷载地基膨胀泥岩的膨胀量在上覆荷载作用初期减小，然后随时间增加呈阶梯式增长趋势，膨胀变形结束时间约为45 h。含水率对该地基膨胀泥岩的膨胀变形影响较大，在无荷载试验中膨胀量随含水率的增加而增加；对于有荷载试验，膨胀量随含水率的增加多呈先减小后增大的趋势，地基膨胀泥岩对应含水率为23%~25%时膨胀变形稳定。从力学理论出发，利用弹性力学中的物理方程并引入膨胀率，推导地基膨胀泥岩在含水率和上覆荷载共同作用下及无上覆荷载时的膨胀量计算公式，发现含水率大于7%时，公式计算结果与试验结果最大相对误差为14.87%，可为实际工程提供理论支撑。
Abstract:
To study the expansion and deformation laws of foundation expansive mudstone under the combined effect of water content and overburden load in a high-speed railway,the changing laws of the expansion amount of foundation expansive mudstone with the increase of time and water content were analyzed through the laboratory tests and theoretical derivation.The results showed that the expansion amount of unloaded foundation expansive mudstone increased continuously in a multistep pattern over time,while the expansion amount of loaded foundation expansive mudstone decreased at the initial stage of overburden load action,then it increased in a multistep pattern over time,and the duration of expansion deformation was about 45 h.The water content had a greater influence on the expansion and deformation of foundation expansive mudstone.In the unloaded test,the expansion amount increased with the increase of water content,and in the loaded test,the expansion amount decreased first and then increased with the increase of water content,the expansion and deformation of foundation expansive mudstone stabilized when the water content was 23%~25%.Based on the mechanics theory,the physical equations in the elastic mechanics were applied,and the expansion rate was introduced,then the calculation formulas for the expansion amount of foundation expansive mudstone under the combined effect of water content and overburden load and that without overburden load were derived.It was found that when the water content was over 7%,the maximum relative error between the calculation results of formula and test results was 14.87%,thus the formulas can provide theoretical support for the practical engineering.

参考文献/References:

［1］谭罗荣，孔令伟.特殊岩土工程土质学［M］.北京：科学出版社，2006.
［2］XEIDAKIS G,KOUDOUMAKIS P,TSIRAMBIDES A.Road construction on swelling soils:the case of Strymi soils,Rhodope,Thrace,Northen Greece ［J］.Bulletin of Engineering Geology and the Engineering Geology and the Environment,2004,63:93-101.
［3］FREDLUND D G,RAHARDJO H.Unstaturated soils mechanics in engineering practice［M］.New York:Wiley,2012.
［4］陈伟志,蒋关鲁,赵慧爽,等.铁路路基下膨胀土地基浸水影响现场试验［J］.岩土工程学报,2014,36(8):1507-1514. CHEN Weizhi,JIANG Guanlu,ZHAO Huishuang,et al.Field tests on soaking response of expansive soil foundation under railway subgrade ［J］.Chinese Journal of Geotechnical Engineering,2014,36(8):1507-1514.
［5］孔令伟,郭爱国,陈善雄,等.膨胀土的承载强度特征与机制［J］.水利学报，2004,35(11):54-61. KONG Lingwei,GUO Aiguo,CHEN Shanxiong,et al.Characteristics and mechanism of bearing strength of expansive soils ［J］.Journal of Hydraulic Engineering,2004,35(11):54-61.
［6］郭爱国,孔令伟,胡明鉴,等.膨胀土路堤处治效果原位试验研究［J］.岩土力学,2005,26(8):1263-1268. GUO Aiguo,KONG Lingwei,HU Minjian,et al.Research on in-situ tests of disposal effect of expansive soil embankment［J］.Rock and Soil Mechanics,2005,26(8):1263-1268.
［7］许瑛,雷胜友.影响有荷载膨胀率的因素分析［J］.长安大学学报(建筑与环境科学版),2003,20(2):6-9. XU Ying,LEI Shengyou.Analysis of variance affecting linear swelling ratio［J］.Journal of Architecture and Civil Engineering,2003,20(2):6-9.
［8］徐永福,龚友平,殷宗泽.宁夏膨胀土膨胀变形特征的试验研究［J］.水利学报,1997,9:28-31. XU Yongfu,GONG Youping,YIN Zongze.Tests on swelling deformation of expansive soils［J］.Journal of Hydraulic Engineering,1997,9:28-31.
［9］徐永福,史春乐.宁夏膨胀土的膨胀变形规律［J］.岩土工程学报,1997,3:98-101. XU Yongfu,SHI Chunle.Swelling deformation law of ningxia expansive soil［J］.Chinese Journal of Geotechnical Engineering,1997,3:98-101.
［10］徐永福.宁夏膨胀土膨胀变形的速率过程参数的确定［J］.河海大学学报(自然科学版),1999,27(5):100-102. XU Yongfu.Parameter determination by rate process theory for swelling deformation of ningxia expansive soil［J］.Journal of Hohai University(Natural Sciences)，1999,27(5):100-102.
［11］李振,邢义川.侧限条件下膨胀土增湿变形计算模式研究［J］.西北农林科技大学学报(自然科学版),2011,5:215-222. LI Zhen,XING Yichuan.Study on the calculation methods of the moistening deformation for the expansion soil under lateral restraint condition［J］.Journal of Northwest A & F University(Natural Science Edition),2011,5:215-222.
［12］李振,邢义川,李鹏.压力对膨胀土遇水膨胀的抑制作用［J］.水力发电学报,2006,25(2):21-26. LI Zhen,XING Yichuan,LI Peng.The pressure inhibition effect on swell deformation of expansive soil encountered with water［J］.Journal of Hydroelectric Engineering,2006,25(2):21-26.
［13］ITO M,AZAM S.Determination of swelling and shrinkage properties of undisturbed expansive soils ［J］.Geotechnical and Geological Engineering,2010,28(4):413-422.
［14］ITO M,AZAM S.Engineering characteristics of a glacio-lacustrine clay deposit in a semi-arid climate［J］.Bulletion of Engineering Geology and the Environment,2009,68(4):551-557.
［15］高游，孙德安，吕海波.弱膨胀土浸水变形特性及其预测［J］,岩土力学,2015,36（3）:775-761. GAO You,SUN Dean,LYU Haibo.Deformation characteristics of weakly expansive soil and its prediction［J］.Rock and Soil Mechanics,2015,36（3）：775-761.
［16］李广信.高等土力学［M］.北京：清华大学出版社,2004.
［17］傅学敏,潘清莲.软岩的膨胀规律和膨胀机理［J］.煤炭学报,1990(2):31-38. FU Xuemin,PAN Qinglian.Rules and mechanism for swelling of weak and soft rcoks［J］.Journal of China Coal Society,1990(2):31-38.
［18］韦秉旭.侧限条件下膨胀土膨胀变形试验研究［J］,公路交通科技,2007,24（10）：48-52. WEI Bingxu.Experimental research on lateral restricted swelling strain of expansive soil［J］.Journal of Highway and Transportation Research and Development,2007,24（10）：48-52.

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备注/Memo

备注/Memo:
收稿日期： 2020-09-14；网络首发日期： 2021-05-06
* 基金项目： 中国铁路总公司科技研究开发计划项目（2017G007-B）；中铁十四局集团大盾构公司技术开发项目（ZT14-大盾构公司-JZTL-QT-2018-0016）
作者简介： 高始军，硕士，工程师，主要研究方向为铁路工程施工技术与管理。
更新日期/Last Update: 2021-06-03