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Field study on swelling-shrinkage response of an expansive soil foundation under high-speed railway embankment loads
Jiang, Guanlu1; Chen, Weizhi1,2; Liu, Xianfeng1,3; Yuan, Shengyang1,3; Wu, Lijun4; Zhang, Chonglei5
Corresponding AuthorLiu, Xianfeng(Xianfeng.liu@swjtu.edu.cn)
2018-12-01
Source PublicationSOILS AND FOUNDATIONS
ISSN0038-0806
Volume58Issue:6Pages:1538-1552
AbstractThis paper presents a comprehensive field investigation of the swelling-shrinkage behavior of an expansive soil ground under high-speed railway embankment loads. In this study, a test site close to the Kunming-Nanning high-speed railway (KNHR) was chosen for the construction of four full-scale field test facilities for artificially soaking the expansive soil ground. Three of the facilities consist of embankments of three different heights, while the fourth facility is for a series of plate load swelling tests. All the test embankments were fully instrumented to monitor the ground deformation and the changes in volumetric water content profiles of the foundations. The full-scale field tests were complemented by a detailed site investigation comprised of cone penetration tests (CPTs), standard penetration tests (SPTs) and a comprehensive laboratory characterization of intact expansive soil samples retrieved from the test site. The results obtained from the laboratory and field tests show that the swelling behavior of the expansive soil ground mainly depends on the embankment load. By properly designing the embankment height and considering the maximum swelling pressure the expansive ground could induce, the heave of the embankment could be controlled efficiently. The measured displacements at the ground surface are well correlated with the evolution of measured volumetric water contents within a ground depth of around 4.5 m. The majority of these displacements occurred when the ground was approaching saturation along both wetting and drying paths. Finally, a simple method based on one-dimensional test results was proposed, and a good performance was shown in predicting the heave or settlement of embankments over an expansive soil ground upon wetting and drying. (C) 2018 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
KeywordHigh-speed railway Low subgrade Expansive soil foundation Swell-shrinking behavior Field test Unsaturated soil
DOI10.1016/j.sandf.2018.09.008
Indexed BySCI
WOS KeywordBEHAVIOR ; BENTONITE ; HEAVE
Language英语
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000456729800019
PublisherJAPANESE GEOTECHNICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24965
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorLiu, Xianfeng
Affiliation1.Southwest Jiaotong Univ, Sch Civil Engn, Minist Educ, Key Lab High Speed Railway Engn, Chengdu 610031, Sichuan, Peoples R China
2.China Railway Eryuan Engn Grp Co Ltd, Chengdu, Sichuan, Peoples R China
3.Univ Newcastle, Fac Engn & Built Environm, Prior Res Ctr Geotech & Mat Modelling, Callaghan, NSW, Australia
4.Chengdu Univ Technol, Coll Environm & Civil Engn, Chengdu 610031, Sichuan, Peoples R China
5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Guanlu,Chen, Weizhi,Liu, Xianfeng,et al. Field study on swelling-shrinkage response of an expansive soil foundation under high-speed railway embankment loads[J]. SOILS AND FOUNDATIONS,2018,58(6):1538-1552.
APA Jiang, Guanlu,Chen, Weizhi,Liu, Xianfeng,Yuan, Shengyang,Wu, Lijun,&Zhang, Chonglei.(2018).Field study on swelling-shrinkage response of an expansive soil foundation under high-speed railway embankment loads.SOILS AND FOUNDATIONS,58(6),1538-1552.
MLA Jiang, Guanlu,et al."Field study on swelling-shrinkage response of an expansive soil foundation under high-speed railway embankment loads".SOILS AND FOUNDATIONS 58.6(2018):1538-1552.
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