Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)最新文献_第2页

SEISMIC RESPONSE ANALYSIS OF EARTH DAMS WITH GEOSTATISTICAL METHOD AND 3-D SURVEY 土坝地震反应分析与三维测量

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.78.2_140

Ryota Ohashi, S. Nishimura, Minoru Kaneshige, T. Shibata, T. Shuku

引用次数: 0

THE DURABILITY EVALUATION OF WOODEN PILES LOCATED IN SANDY STRATA AND ABOVE WATER TABLE 砂质地层及水面以上木桩耐久性评价

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/JSCEJGE.75.35

K. Mizuno, T. Fujiwara, Shin-ichiro Nozawa, Yousuke Mizutani

引用次数: 0

MODEL TESTS OF COUNTERMEASURES AGAINST SURFACE VIBRATION PROPAGATED FROM PIERS 桥墩传播表面振动对策的模型试验

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.75.49

H. Toyota, K. Mikami, Susumu Takada, Jun Kaneda

引用次数: 0

EXPERIMENTAL STUDY FOR ESTIMATING TENSION FORCE OF GROUND ANCHORS BY HAMMERING TECHNOLOGY 用锤击技术估算地锚拉力的试验研究

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/JSCEJGE.75.90

Tomohiro Hamasaki, K. Kasama, T. Matsunaga, Ryota Ogawa, Y. Isobe, Masayuki Sayama

引用次数: 0

DEVELOPMENT OF A NEW FRACTURING GROUTING WITH LEAF VEIN SHAPE GROUT FOR SOIL LIQUEFACTION COUNTERMEASURE 一种新型叶脉状破裂注浆土体液化对策的研制

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.75.454

J. Izawa, K. Kojima, Go Araki, Takaaki Onishi, A. Hayashida, T. Fujiwara, K. Ueda, M. Tateyama

{"title":"DEVELOPMENT OF A NEW FRACTURING GROUTING WITH LEAF VEIN SHAPE GROUT FOR SOIL LIQUEFACTION COUNTERMEASURE","authors":"J. Izawa, K. Kojima, Go Araki, Takaaki Onishi, A. Hayashida, T. Fujiwara, K. Ueda, M. Tateyama","doi":"10.2208/jscejge.75.454","DOIUrl":"https://doi.org/10.2208/jscejge.75.454","url":null,"abstract":"The authors have proposed a new fracture grouting method, which can increase densities of liquefiable ground and increase liquefaction resistance by injecting leaf vein shape grout. Since this method can im-prove liquefiable ground effectively with low grouting ratio (approximately 10% in volume ratio), widely spreading liquefiable ground can be improved economically within a short period. This paper describes results of experimental studies following brief explanation about a concept of the propose method. At first, 4 cases of trial grouting tests were conducted to validate feasibility of the proposed grouting method using a large-scale soil stratum pit. As a results, it was confirmed that leaf vein shape grout could be injected in loose saturated sand ground by a dynamic grouting method, of which specifications were adequately set. Furthermore, increase in density of the improved ground could be evaluated by some soil investigations conducted before and after grouting, such as the standard penetration test, the in-situ seepage test, the PS logging and so on. Finally, a series of shaking table tests were conducted to confirm effect of the proposed method against soil liquefaction during earthquakes. The test results clarified that the loose liquefiable sand ground could be effectively improved by the proposed method and could show almost the same liquefaction resistance with that of the dense sand ground, which was ideally compacted to have the same density as-sumed in the improved ground.","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":"133390831","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}

引用次数: 0

PROMOTING METHOD FOR DETERIORATION OF CEMENT STABILIZED SOIL UNDER MARINE ENVIRONMENT AND ITS REPRODUCIBILITY OF STRENGTH AND DEFORMATION CHARACTERISTICS 海洋环境下水泥稳定土劣化促进方法及其强度和变形特性的再现性

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.77.4_325

H. Hara, N. Yoshimoto, Takaaki Kariu

引用次数: 0

CENTRIFUGE MODEL TESTS AND FEM ANALYSES FOCUSING ON MECHANICAL BEHAVIOR OF SOFT GROUND BY COMBINING VACUUM CONSOLIDATION METHOD AND EMBANKMENT LOADING 采用真空固结法和路堤荷载相结合的方法对软土地基进行了力学性能的离心模型试验和有限元分析

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.76.2_174

S. Shiraga, G. Hasegawa, Y. Sawamura, M. Kimura

{"title":"CENTRIFUGE MODEL TESTS AND FEM ANALYSES FOCUSING ON MECHANICAL BEHAVIOR OF SOFT GROUND BY COMBINING VACUUM CONSOLIDATION METHOD AND EMBANKMENT LOADING","authors":"S. Shiraga, G. Hasegawa, Y. Sawamura, M. Kimura","doi":"10.2208/jscejge.76.2_174","DOIUrl":"https://doi.org/10.2208/jscejge.76.2_174","url":null,"abstract":"Vacuum consolidation methods allow a soft ground to be consolidated without the shear deformation of the ground. That is, the safe construction of an embankment can be achieved by combining a vacuum consolidation method and embankment loading. The stabilizing effect of vacuum consolidation methods has been verified through many construction examples, and it has been reported that measuring or pre-dicting the pore pressure through on-site numerical analyses and experiments is important to evaluating the stabilization of the ground. In this study, centrifuge model experiments and numerical analyses focusing on the mechanical behavior around the drain in a soft ground were conducted to investigate the effect of both the period preceding vacuum consolidation before the embankment construction and the embankment speed on the pore water pressure. As a result, the relationship between the preliminary period of vacuum consolidation and the embankment speed, which can suppress the increase in pore water pressure due to embankment loading and has a stabilizing effect on the ground, was clarified. Furthermore, the local consolidation behavior around the drain was clarified.","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":"116860670","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}

引用次数: 0

STUDY ON PORE CONNECTIVITY COEFFICIENT OF CRUSHED SHELL PARTICLES FOR CAPILLARY BARRIER OF SOIL 土壤毛细管屏障用破碎壳颗粒孔隙连通性系数研究

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.78.2_153

Kaoru Kobayashi, K. Mutsumoto, Youhei Koyano, Keiya Matsuura, T. Morii

引用次数: 0

DISPLACEMENT BEHAVIOR OF TREE INTRUDED-FRACTURES AT A ROCK SLOPE 岩质边坡树状侵入裂缝的位移特性

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/jscejge.78.4_277

Nariaki Kodama, Y. Fujii, T. Sugawara, Naoshi Miyashita

引用次数: 0

ESTIMATION OF GROUND ANCHOR RESIDUAL TENSION BY VIBRATION METHOD 用振动法估算地锚残余张力

Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) Pub Date : 1900-01-01 DOI: 10.2208/JSCEJGE.77.3_213

H. Saito, M. Yamazaki, A. Yashima, K. Nawa, K. Aoike, Y. Sone

引用次数: 0