IMHE OpenIR  > 山地灾害与地表过程重点实验室
Full-scale model testing on the dynamic behaviour of weathered red mudstone subgrade under railway cyclic loading
Zhang, Chonglei1; Jiang, Guanlu2; Buzzi, Olivier3; Su, Lijun1
2019-04-01
Source PublicationSOILS AND FOUNDATIONS
ISSN0038-0806
Volume59Issue:2Pages:296-315
AbstractAlthough weathered red mudstone (WRM) is widely distributed in the southwest of China, its suitability as a fill material for the subgrade bed of a high-speed railway (HSR) has not been comprehensively investigated. This paper presents the results of a field full-scale model testing of the cyclic loading and response of a railway track-subgrade system for the Dazhou-Chengdu Railway, where some WRM has been used in a newly designed subgrade structure. A control section of the HSR was also built using a traditional subgrade bed (Group A&B material) to compare the performances of the different sections. To better understand the dynamic characteristics and cumulative deformation of the two types of subgrade, the dynamic actions of different axle loads and different train speeds were simulated using specifically designed track-cyclic-loading equipment. The transverse and vertical distributions of the dynamic stress, dynamic displacement and acceleration of the track-subgrade system were measured and evaluated. The influence of the wheel axle load on the growth factor of the dynamic parameters, the vertical attenuation coefficient of the dynamic stress, and the effect of using WRM in the subgrade on the post-construction settlements were investigated. The tests enabled the development of cumulative settlement laws with railway loading for the two types of subgrade. Although the dynamic parameters and cumulative settlement of the WRM subgrade are always greater than those of better-quality material (Group A&B subgrade), they comply with HSR regulations. In conclusion, the results demonstrated that weathered red mudstone can be used as a filling material in the newly designed subgrade structure for HSRs. (C) 2019 Production and hosting by Elsevier B.V. on behalf of The Japanese Geotechnical Society.
KeywordFull-scale test Subgrade Dynamic stress High-speed railway Cyclic loading Cumulative settlement
DOI10.1016/j.sandf.2018.11.007
Indexed BySCI
WOS KeywordHIGH-SPEED RAILWAY ; BED MECHANICAL-BEHAVIOR ; GROUND-BORNE VIBRATIONS ; PERMANENT DEFORMATION ; TRANSITION ZONES ; FOULED BALLAST ; TRACK ; TRAIN ; SUBSTRUCTURE ; DESIGN
Language英语
Funding ProjectNational Natural Science Foundation of China[41761144077] ; CAS Light of West China Program[Y6R2240240] ; National Natural Science Foundation of China[51808542] ; Sichuan science & technology plan project[2017JY0251]
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000471727100005
PublisherJAPANESE GEOTECHNICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26510
Collection山地灾害与地表过程重点实验室
Corresponding AuthorBuzzi, Olivier
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Southwest Jiaotong Univ SWJTU, Sch Civil Engn, MOE Key Lab High Speed Railway Engn, Chengdu 610031, Sichuan, Peoples R China
3.Univ Newcastle, Fac Engn & Built Environm, Prior Res Ctr Geotech Sci & Engn, Callaghan, NSW, Australia
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhang, Chonglei,Jiang, Guanlu,Buzzi, Olivier,et al. Full-scale model testing on the dynamic behaviour of weathered red mudstone subgrade under railway cyclic loading[J]. SOILS AND FOUNDATIONS,2019,59(2):296-315.
APA Zhang, Chonglei,Jiang, Guanlu,Buzzi, Olivier,&Su, Lijun.(2019).Full-scale model testing on the dynamic behaviour of weathered red mudstone subgrade under railway cyclic loading.SOILS AND FOUNDATIONS,59(2),296-315.
MLA Zhang, Chonglei,et al."Full-scale model testing on the dynamic behaviour of weathered red mudstone subgrade under railway cyclic loading".SOILS AND FOUNDATIONS 59.2(2019):296-315.
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