Open caissons are sunk into the ground by their own weight. A cutting edge of the caisson having a tapered inner face on loading – that is, raising of the steining – results in bearing failure by d...
{"title":"Experimental evaluation of ultimate bearing capacity of the cutting edge of an open caisson","authors":"J. Chavda, Soumyaranjan Mishra, G. Dodagoudar","doi":"10.1680/JPHMG.18.00052","DOIUrl":"https://doi.org/10.1680/JPHMG.18.00052","url":null,"abstract":"Open caissons are sunk into the ground by their own weight. A cutting edge of the caisson having a tapered inner face on loading – that is, raising of the steining – results in bearing failure by d...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/JPHMG.18.00052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43608382","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}
Youwei Xu, G. Yan, David J. Williams, M. Serati, A. Scheuermann, Timothy Vangsness
The behaviour of footings on geosynthetic-reinforced soils has been investigated by many researchers through experimental and numerical modelling under stress-controlled or strain-controlled conditions. It is believed that stress-controlled tests better represent the field conditions because the load applied to the footing increases as the super structure is being built. Therefore, a new experimental set-up was designed under a stress-controlled condition, with the application of particle image velocimetry (PIV) technique. A series of model footing tests were carried out using this equipment to investigate the behaviour of the geosynthetic-reinforced soil below a strip footing. The deformation inside the soil mass below the strip footing was determined using the PIV technique. The reinforcing performances of the single-layer and multi-layer geotextile and geogrid embedded at different depths were compared and discussed by analysing the load-settlement curves. The optimum embedment depth for the single-layer geosynthetic reinforcement is in the vicinity of 0.4B. It is found that there is a stepwise increase phenomenon in settlement under the stress-controlled condition. The ultimate bearing capacities were determined from the obtained stepwise load-settlement curves using three approaches, including the tangent intersection method, the tail linear method and the allowable settlement method. The three approaches were coded in a Python program in order to easily determine and compare the results. In addition, the experimental model footing tests were simulated using the finite element method (FEM) under the same stress-condition condition with good agreement for a settlement range within 0.1B.
{"title":"Experimental and numerical studies of a strip footing on geosynthetic-reinforced sand","authors":"Youwei Xu, G. Yan, David J. Williams, M. Serati, A. Scheuermann, Timothy Vangsness","doi":"10.1680/JPHMG.18.00021","DOIUrl":"https://doi.org/10.1680/JPHMG.18.00021","url":null,"abstract":"The behaviour of footings on geosynthetic-reinforced soils has been investigated by many researchers through experimental and numerical modelling under stress-controlled or strain-controlled conditions. It is believed that stress-controlled tests better represent the field conditions because the load applied to the footing increases as the super structure is being built. Therefore, a new experimental set-up was designed under a stress-controlled condition, with the application of particle image velocimetry (PIV) technique. A series of model footing tests were carried out using this equipment to investigate the behaviour of the geosynthetic-reinforced soil below a strip footing. The deformation inside the soil mass below the strip footing was determined using the PIV technique. The reinforcing performances of the single-layer and multi-layer geotextile and geogrid embedded at different depths were compared and discussed by analysing the load-settlement curves. The optimum embedment depth for the single-layer geosynthetic reinforcement is in the vicinity of 0.4B. It is found that there is a stepwise increase phenomenon in settlement under the stress-controlled condition. The ultimate bearing capacities were determined from the obtained stepwise load-settlement curves using three approaches, including the tangent intersection method, the tail linear method and the allowable settlement method. The three approaches were coded in a Python program in order to easily determine and compare the results. In addition, the experimental model footing tests were simulated using the finite element method (FEM) under the same stress-condition condition with good agreement for a settlement range within 0.1B.","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/JPHMG.18.00021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43316763","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}
Whenever superstructures are under large lateral loading, designers prefer to use piles. Pile design always has been attractive for engineers as numerous factors are involved. However, few studies ...
{"title":"Effect of pile cross-section shape on pile group behaviour under lateral loading in sand","authors":"Meysam Memar, S. Zomorodian, A. Vakili","doi":"10.1680/JPHMG.19.00020","DOIUrl":"https://doi.org/10.1680/JPHMG.19.00020","url":null,"abstract":"Whenever superstructures are under large lateral loading, designers prefer to use piles. Pile design always has been attractive for engineers as numerous factors are involved. However, few studies ...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/JPHMG.19.00020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47454047","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}
Vacuum consolidation is a ground-improvement method in which negative pressure is applied to drain materials placed in a soft ground to consolidate the ground. Using the vacuum consolidation method...
真空固结是一种对放置在软土地中的排水材料施加负压以固结土地的地基加固方法。采用真空固结法…
{"title":"Centrifuge-model tests on pore water pressure combined with vacuum and embankment loading","authors":"Y. Sawamura, S. Shiraga, G. Hasegawa, M. Kimura","doi":"10.1680/jphmg.19.00025","DOIUrl":"https://doi.org/10.1680/jphmg.19.00025","url":null,"abstract":"Vacuum consolidation is a ground-improvement method in which negative pressure is applied to drain materials placed in a soft ground to consolidate the ground. Using the vacuum consolidation method...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/jphmg.19.00025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48771020","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}
D. Kong, Panpan Ying, Jiayi Wan, Wenlong Zhang, B. Zhu
This paper presents a programme of model tests on the lateral behaviour of tetrapod caisson-founded jacket (TCJ) structures in silt. Loading tests on the TCJ as well as on a mono-caisson were condu...
{"title":"Experimental study on lateral behaviour of tetrapod caisson foundations in silt","authors":"D. Kong, Panpan Ying, Jiayi Wan, Wenlong Zhang, B. Zhu","doi":"10.1680/jphmg.20.00033","DOIUrl":"https://doi.org/10.1680/jphmg.20.00033","url":null,"abstract":"This paper presents a programme of model tests on the lateral behaviour of tetrapod caisson-founded jacket (TCJ) structures in silt. Loading tests on the TCJ as well as on a mono-caisson were condu...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/jphmg.20.00033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44263251","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}
This paper describes a new approach to modelling the three-dimensional (3D) variability of soil by using a multi-material 3D printer to extrude slurries of different types of clays. First, a distri...
{"title":"Reproducing the inherent variability of soils using a three-dimensional printer","authors":"L. Pua, B. Caicedo","doi":"10.1680/jphmg.20.00006","DOIUrl":"https://doi.org/10.1680/jphmg.20.00006","url":null,"abstract":"This paper describes a new approach to modelling the three-dimensional (3D) variability of soil by using a multi-material 3D printer to extrude slurries of different types of clays. First, a distri...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/jphmg.20.00006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46165337","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}
An instrumented 1:70 scale model underground tunnel, located below a free water body, was subjected to explosions in centrifuge model tests. Utilising centrifuge scaling relations, each test at 70g...
{"title":"Pore-pressure development near tunnel due to underwater explosion from centrifuge tests","authors":"A. De, A. Niemiec, T. Zimmie","doi":"10.1680/jphmg.19.00037","DOIUrl":"https://doi.org/10.1680/jphmg.19.00037","url":null,"abstract":"An instrumented 1:70 scale model underground tunnel, located below a free water body, was subjected to explosions in centrifuge model tests. Utilising centrifuge scaling relations, each test at 70g...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/jphmg.19.00037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48605409","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}
This paper presents a physical model study of the feasibility and performance of a monopiled gravity base structure (MGBS) for offshore foundation applications. The research study builds on the cur...
本文对近海基础中单桩重力基础结构的可行性和性能进行了物理模型研究。这项研究是建立在……
{"title":"Performance of a self-installing monopiled gravity base structure under lateral loading","authors":"K. Stone, Maria Diakoumi","doi":"10.1680/jphmg.19.00036","DOIUrl":"https://doi.org/10.1680/jphmg.19.00036","url":null,"abstract":"This paper presents a physical model study of the feasibility and performance of a monopiled gravity base structure (MGBS) for offshore foundation applications. The research study builds on the cur...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/jphmg.19.00036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48988567","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}
Submarine landslides can cut off seabed pipelines and cables and destroy near-shore structures. Such processes can result in tsunamis, which inflict additional enormous damage in near-shore areas. ...
{"title":"Centrifuge model tests of earthquake-induced submarine landslide","authors":"Hidenori Takahashi, N. Fujii, S. Sassa","doi":"10.1680/JPHMG.18.00048","DOIUrl":"https://doi.org/10.1680/JPHMG.18.00048","url":null,"abstract":"Submarine landslides can cut off seabed pipelines and cables and destroy near-shore structures. Such processes can result in tsunamis, which inflict additional enormous damage in near-shore areas. ...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/JPHMG.18.00048","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41816850","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}
D. Lucas, R. Herzog, M. Iten, H. Buschor, A. Kieper, A. Askarinejad, S. Springman
Predicting the trigger of a slope failure of a steep Alpine scree slope in south-west Switzerland is challenging. The groundwater (GW) flow from snow-melting and rainfall infiltration during summer...
{"title":"Modelling of landslides in a scree slope induced by groundwater and rainfall","authors":"D. Lucas, R. Herzog, M. Iten, H. Buschor, A. Kieper, A. Askarinejad, S. Springman","doi":"10.1680/JPHMG.18.00106","DOIUrl":"https://doi.org/10.1680/JPHMG.18.00106","url":null,"abstract":"Predicting the trigger of a slope failure of a steep Alpine scree slope in south-west Switzerland is challenging. The groundwater (GW) flow from snow-melting and rainfall infiltration during summer...","PeriodicalId":48816,"journal":{"name":"International Journal of Physical Modelling in Geotechnics","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/JPHMG.18.00106","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47116442","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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