S. K. Suryasentana, H. J. Burd, B. W. Byrne, A. Shonberg
Soils exhibit non-linear stress-strain behaviour, even at relatively low strain levels. Existing Winkler models for suction caisson foundations cannot capture this small-strain, non-linear soil behaviour. To address this issue, this paper describes a new non-linear elastic Winkler model for the uniaxial loading of suction caissons. The soil reaction curves employed in the model are formulated as scaled versions of the soil response as observed in standard laboratory tests (e.g. triaxial or simple shear tests). The scaling relationships needed to map the observed soil element behaviour onto the soil reaction curves employed in the Winkler model are determined from an extensive numerical study employing 3D finite element analysis. Key features of the proposed Winkler model include: computational efficiency, wide applicability (it can be used for caisson design in clay, silt or sand) and design convenience (the required soil reaction curves can be determined straightforwardly from standard laboratory test results). The proposed model is suitable for small and intermediate caisson displacements (corresponding to fatigue and serviceability limit state conditions) but it is not applicable to ultimate limit state analyses.
{"title":"Small-strain, non-linear elastic Winkler model for uniaxial loading of suction caisson foundations","authors":"S. K. Suryasentana, H. J. Burd, B. W. Byrne, A. Shonberg","doi":"10.1680/jgele.23.00043","DOIUrl":"https://doi.org/10.1680/jgele.23.00043","url":null,"abstract":"Soils exhibit non-linear stress-strain behaviour, even at relatively low strain levels. Existing Winkler models for suction caisson foundations cannot capture this small-strain, non-linear soil behaviour. To address this issue, this paper describes a new non-linear elastic Winkler model for the uniaxial loading of suction caissons. The soil reaction curves employed in the model are formulated as scaled versions of the soil response as observed in standard laboratory tests (e.g. triaxial or simple shear tests). The scaling relationships needed to map the observed soil element behaviour onto the soil reaction curves employed in the Winkler model are determined from an extensive numerical study employing 3D finite element analysis. Key features of the proposed Winkler model include: computational efficiency, wide applicability (it can be used for caisson design in clay, silt or sand) and design convenience (the required soil reaction curves can be determined straightforwardly from standard laboratory test results). The proposed model is suitable for small and intermediate caisson displacements (corresponding to fatigue and serviceability limit state conditions) but it is not applicable to ultimate limit state analyses.","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135143991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Grouting cable is a newly developed technology for the reinforcement of fractured rock mass in coal mines of China. It integrates the procedures of cable anchoring and grouting, thus simplifying the working procedure of roadway support. However, ordinary grouting cable products with a core tube have some significant defects, such as a narrow flow channel, difficulty in slurry diffusion and significant reduction of cable strength. To overcome these shortcomings of ordinary grouting cables, this paper proposes a new kind of grouting cable without a core tube. The ordinary plastic core tube is replaced by a steel core wrapped by several steel strands. The inner gap between the steel strands and steel core is used as the slurry flow channel. The optimised measures can significantly improve slurry diffusion and strength performance of the grouting cable. As a novel idea, several samples of the new grouting cable were produced. Lab testing and field application experiment indicated that slurry diffusion and strength performance of the new grouting cable had been significantly improved compared with ordinary ones.
{"title":"A new grouting cable without core tube used for reinforcement of fractured rock mass","authors":"Y. Kang, Y. Li, M. Zhang, X. Li, B. Liu","doi":"10.1680/jgele.23.00031","DOIUrl":"https://doi.org/10.1680/jgele.23.00031","url":null,"abstract":"Grouting cable is a newly developed technology for the reinforcement of fractured rock mass in coal mines of China. It integrates the procedures of cable anchoring and grouting, thus simplifying the working procedure of roadway support. However, ordinary grouting cable products with a core tube have some significant defects, such as a narrow flow channel, difficulty in slurry diffusion and significant reduction of cable strength. To overcome these shortcomings of ordinary grouting cables, this paper proposes a new kind of grouting cable without a core tube. The ordinary plastic core tube is replaced by a steel core wrapped by several steel strands. The inner gap between the steel strands and steel core is used as the slurry flow channel. The optimised measures can significantly improve slurry diffusion and strength performance of the grouting cable. As a novel idea, several samples of the new grouting cable were produced. Lab testing and field application experiment indicated that slurry diffusion and strength performance of the new grouting cable had been significantly improved compared with ordinary ones.","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135144758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-01DOI: 10.1680/jgele.2023.13.1.89
{"title":"Award-winning paper in 2021","authors":"","doi":"10.1680/jgele.2023.13.1.89","DOIUrl":"https://doi.org/10.1680/jgele.2023.13.1.89","url":null,"abstract":"","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135289964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The scope of this paper is to have an alternative to the use of an explicit plastic potential in elastoplastic models for soils. This is possible through the definition of a stress–dilatancy relati...
本文的范围是在土壤弹塑性模型中使用显式塑性势的替代方法。这可以通过定义应力-剪胀关系来实现。
{"title":"Auxiliary plastic potential approach in elastoplasticity for soils","authors":"G. Mortara","doi":"10.1680/JGELE.20.00161","DOIUrl":"https://doi.org/10.1680/JGELE.20.00161","url":null,"abstract":"The scope of this paper is to have an alternative to the use of an explicit plastic potential in elastoplastic models for soils. This is possible through the definition of a stress–dilatancy relati...","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"81 1","pages":"221-229"},"PeriodicalIF":2.1,"publicationDate":"2021-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85963924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A series of experiments is performed to determine the damage behaviour and energy evolution of red-bed sandstones subjected to drying–wetting (D–W) cycles. The experimental results reveal that acco...
通过一系列试验研究了干湿循环作用下红层砂岩的损伤行为和能量演化规律。实验结果表明……
{"title":"An energy-based damage model for red-bed sandstones subjected to drying–wetting cycles","authors":"H. Kai, F. Zha, Bong-Geun Kang, X. Sun, J. Su","doi":"10.1680/JGELE.21.00061","DOIUrl":"https://doi.org/10.1680/JGELE.21.00061","url":null,"abstract":"A series of experiments is performed to determine the damage behaviour and energy evolution of red-bed sandstones subjected to drying–wetting (D–W) cycles. The experimental results reveal that acco...","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"9 1","pages":"1-21"},"PeriodicalIF":2.1,"publicationDate":"2021-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84250115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Ochmański, D. Mašín, J. Duque, H. Yi, W. Lizhong
{"title":"Performance of tripod foundations for offshore wind turbines: a numerical study","authors":"M. Ochmański, D. Mašín, J. Duque, H. Yi, W. Lizhong","doi":"10.1680/JGELE.20.00126","DOIUrl":"https://doi.org/10.1680/JGELE.20.00126","url":null,"abstract":"","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"34 1","pages":"1-9"},"PeriodicalIF":2.1,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89445846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Over 12 000 houses built in Ireland between 2002 and 2008 are estimated to have sustained structural damage due to swelling initiated by pyrite in crushed rock aggregate beneath floor slabs. The Ir...
{"title":"The Pyrite Heave Problem – New Insights from Trace Element Analysis","authors":"M. Ryskin, M. Maher","doi":"10.1680/JGELE.21.00016","DOIUrl":"https://doi.org/10.1680/JGELE.21.00016","url":null,"abstract":"Over 12 000 houses built in Ireland between 2002 and 2008 are estimated to have sustained structural damage due to swelling initiated by pyrite in crushed rock aggregate beneath floor slabs. The Ir...","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"9 1","pages":"1-23"},"PeriodicalIF":2.1,"publicationDate":"2021-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87810012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Multiple occurrences of liquefaction in recent earthquake events revealed the importance of studying reliquefaction characteristics of sandy soils. However, there is a lack of knowledge in determin...
近年来地震中多次出现的液化现象，揭示了砂土再液化特性研究的重要性。然而，在确定……方面缺乏知识。
{"title":"Dynamic properties of Toyoura sand in reliquefaction tests: effects of strain history and induced anisotropy","authors":"P. Amini, Duruo Huang, Gin C. Wang","doi":"10.1680/JGELE.20.00099","DOIUrl":"https://doi.org/10.1680/JGELE.20.00099","url":null,"abstract":"Multiple occurrences of liquefaction in recent earthquake events revealed the importance of studying reliquefaction characteristics of sandy soils. However, there is a lack of knowledge in determin...","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"30 1","pages":"1-26"},"PeriodicalIF":2.1,"publicationDate":"2021-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84683665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The accurate prediction of settlements of shallow foundations under operational conditions is still an open issue for both scientists and engineers, in particular in the case of complex loading con...
{"title":"Experiments and modelling of horizontal loading tests on small scale foundations in sand at constant vertical load","authors":"A. Galli, G. Mortara","doi":"10.1680/JGELE.20.00098","DOIUrl":"https://doi.org/10.1680/JGELE.20.00098","url":null,"abstract":"The accurate prediction of settlements of shallow foundations under operational conditions is still an open issue for both scientists and engineers, in particular in the case of complex loading con...","PeriodicalId":48920,"journal":{"name":"Geotechnique Letters","volume":"6 1 1","pages":"1-20"},"PeriodicalIF":2.1,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74359566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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