K. Itoh, Taketo Hayashi, N. Kikkawa, N. Hiraoka, T. Konami
In Japan, there are approximately 30 to 40 slope failure accidents every year, causing injury to workers and damage to property. It has been reported that more than 50% of these accidents occurred during excavating or leveling the lower parts of the slope toe, indicating the necessity of developing a temporary and simple slope reinforced method to prevent such accidents during slope cutting works. Although many natural ground reinforced earth method for permanent have been developed to keep the stability of a steep cut slope, most of them are either difficult to set up under the construction or are too expensive to use at small to medium-sized slope cutting sites. In this study, as a simple and cost-effective slope reinforced method for small to medium-sized slope cutting sites, a temporary soil nailing was considered, and the reinforcing mechanism of soil nailing was investigated by centrifuge model tests. An in-flight excavator, which can excavate the model slope in high centrifuge acceleration environment, was used in this paper for simulating the slope cutting works. The deformation of mode slope during excavation was measured by PIV (Particle Image Velocimetry) and the deformation processes in the model slopes with and without the soil nailing were compared in the strain field.
{"title":"EXCAVATION OF SLOPE REINFORCED TEMPORARY BY SOIL NAILING USING IN-FLIGHT EXCAVATOR IN CENTRIFUGE","authors":"K. Itoh, Taketo Hayashi, N. Kikkawa, N. Hiraoka, T. Konami","doi":"10.2208/jscejge.75.103","DOIUrl":"https://doi.org/10.2208/jscejge.75.103","url":null,"abstract":"In Japan, there are approximately 30 to 40 slope failure accidents every year, causing injury to workers and damage to property. It has been reported that more than 50% of these accidents occurred during excavating or leveling the lower parts of the slope toe, indicating the necessity of developing a temporary and simple slope reinforced method to prevent such accidents during slope cutting works. Although many natural ground reinforced earth method for permanent have been developed to keep the stability of a steep cut slope, most of them are either difficult to set up under the construction or are too expensive to use at small to medium-sized slope cutting sites. In this study, as a simple and cost-effective slope reinforced method for small to medium-sized slope cutting sites, a temporary soil nailing was considered, and the reinforcing mechanism of soil nailing was investigated by centrifuge model tests. An in-flight excavator, which can excavate the model slope in high centrifuge acceleration environment, was used in this paper for simulating the slope cutting works. The deformation of mode slope during excavation was measured by PIV (Particle Image Velocimetry) and the deformation processes in the model slopes with and without the soil nailing were compared in the strain field.","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115839999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.78.4_355
Ryohei Sugii, S. Akutagawa, Masaki Matsumura
{"title":"STUDY ON OBSERVATION METHOD OF WATER PENETRATION INTO THE GROUND USING PLASTIC OPTICAL FIBER AND PORTABLE DEVICES","authors":"Ryohei Sugii, S. Akutagawa, Masaki Matsumura","doi":"10.2208/jscejge.78.4_355","DOIUrl":"https://doi.org/10.2208/jscejge.78.4_355","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115523174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.4_386
Yui Watanabe, T. Unno, Akiyoshi Kamura
{"title":"VARIATION OF HYDRAULIC CONDUCTIVITY IN SANDY SOIL DUE TO UNDRAINED CYCLIC SHEAR LOADING","authors":"Yui Watanabe, T. Unno, Akiyoshi Kamura","doi":"10.2208/jscejge.77.4_386","DOIUrl":"https://doi.org/10.2208/jscejge.77.4_386","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114564313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.3_258
M. Shinoda, Y. Miyata
{"title":"MODIFIED APSO BASED SLOPE STABILITY ANALYSIS USING NON-CIRCULAR SLIP SURFACE","authors":"M. Shinoda, Y. Miyata","doi":"10.2208/jscejge.77.3_258","DOIUrl":"https://doi.org/10.2208/jscejge.77.3_258","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114106792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.78.2_116
T. Shuku, Shinya Yamamoto
{"title":"A STUDY ON OPTIMAL DESIGN OF GEOTECHNICAL STRUCTURES USING QUANTUM ANNEALING","authors":"T. Shuku, Shinya Yamamoto","doi":"10.2208/jscejge.78.2_116","DOIUrl":"https://doi.org/10.2208/jscejge.78.2_116","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114649350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.2208/jscejge.77.3_233
Keisuke Takahashi, M. Komatsu, T. Iwata, Koji Takimoto
{"title":"A FUNDAMENTAL STUDY ON THE EFFECTIVENESS IN PERMEABILITY REDUCTION BY INJECTING PRESSURIZED KAOLIN CLAY SUSPENSION INTO HIGHLY PERMEABLE SAND LAYER","authors":"Keisuke Takahashi, M. Komatsu, T. Iwata, Koji Takimoto","doi":"10.2208/jscejge.77.3_233","DOIUrl":"https://doi.org/10.2208/jscejge.77.3_233","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127144942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"CONSIDERATION ON STABILITY EVALUATION BASED ON LONG-TERM VIBRATION MONITORING OF BLOCK FIELDS","authors":"Yu Fujiwara, Takashi Mitsuzuka, Hirofumi Hisada, Masaru Takemoto","doi":"10.2208/jscejge.75.415","DOIUrl":"https://doi.org/10.2208/jscejge.75.415","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Kasama, Tatsuya Nagayama, Nobuhiko Hamaguchi, Y. Sugimura, T. Fujii, T. Kaneko, Koki Zen
{"title":"PERFORMANCE-BASED EVALUATION FOR THE BEARING CAPACITY OF GROUND IMPROVED BY PERMEATION GROUTING METHOD","authors":"K. Kasama, Tatsuya Nagayama, Nobuhiko Hamaguchi, Y. Sugimura, T. Fujii, T. Kaneko, Koki Zen","doi":"10.2208/jscejge.78.1_45","DOIUrl":"https://doi.org/10.2208/jscejge.78.1_45","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124191314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
soil. However, it has not been possible to evaluate the actual frictional characteristic of reinforced soil walls with different backfill soil materials on each construction site. In this study, we developed a small and simplified pull-out test apparatus that can be used to evaluate the friction characteristic of steel strips-reinforced soil walls for the use of construction site. We also confirmed the reliability of our developed testing as compared with the field pull-out tests. Furthermore, we propose a method for evaluating the friction characteristics of backfill materials on site before construction, in order to ensure required quality.
{"title":"EVALUATION OF FRICTION CHARACTERISTIC OF STEEL STRIPS-REINFORCED SOIL WALL USING A SMALL PULL-OUT TEST APPARATUS FOR THE USE OF CONSTRUCTION SITE","authors":"K. Sahara, Motoyuki Suzuki, Y. Fujita","doi":"10.2208/jscejge.76.1_12","DOIUrl":"https://doi.org/10.2208/jscejge.76.1_12","url":null,"abstract":"soil. However, it has not been possible to evaluate the actual frictional characteristic of reinforced soil walls with different backfill soil materials on each construction site. In this study, we developed a small and simplified pull-out test apparatus that can be used to evaluate the friction characteristic of steel strips-reinforced soil walls for the use of construction site. We also confirmed the reliability of our developed testing as compared with the field pull-out tests. Furthermore, we propose a method for evaluating the friction characteristics of backfill materials on site before construction, in order to ensure required quality.","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131385478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"DEVELOPMENT OF DISCONTINUOUS DEFORMATION ANALYSIS (DDA) WITH AN IMPLICIT INTEGRATION ALGORITHM OF FRICTION LAW","authors":"R. Hashimoto, M. Kikumoto, T. Koyama","doi":"10.2208/jscejge.75.336","DOIUrl":"https://doi.org/10.2208/jscejge.75.336","url":null,"abstract":"","PeriodicalId":326143,"journal":{"name":"Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131820501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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