{"created":"2022-01-27T07:27:33.619159+00:00","id":2003217,"links":{},"metadata":{"_buckets":{"deposit":"cc75570c-c872-4cd3-b0b6-fb7428e88c01"},"_deposit":{"id":"2003217","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2003217"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02003217","sets":["1642837622505:1642837905044:1642837910985","1642838403551:1642838407312"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"島尻層軟化泥岩の残留強度について(農業工学科)","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Residual strength of softened Shimajiri mudstone (Department of Agricultural Engineering)","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"宜保, 清一","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Gibo, Seiichi","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"(1)すべり面付近の新鮮軟化泥岩の圧密降伏応力はPy=10^<kg>/cm^2前後にある。(2)軟化泥岩の繰返しセン断試験結果からピーク強度定数はCdf=1.20&acd;1.55^<kg>/cm^2,φdf=19&acd;22°, 残留強度定数はCdr=0,φdr=17&acd;19°の範囲にある。(3)セン断破壊面が十分発達した自然分離面ではCdr=0,φdr=17°, 作成分離面ではCdr=0,φdr=15°となる。(4)軟化泥岩のブリトル指数は, σ_n=1&acd;5^<kg>/cm^2に対しおよそI_B=80&acd;50%となり, Py/σ_nとの関係ではI_B=44.2log Py/σ_n+32.5が成り立つ。(5)完全軟化粘土の正規圧密セン断から得られたφ_Nf=23°, φ_Nr=19°は分離面で求めたφdrよりも大きめである。","subitem_description_type":"Other"},{"subitem_description":"Drained shear tests were performed with shear box on intact softened mudstone, fully-softened clay, natural joint, and specimen with pre-cut plane. The following results have been obtained : 1. The consolidation yield stress of intact softened mudstone is about 10kg/(cm)^2. 2. Residual strength was determined with the common procedure of reversal shear tests. After 5-cycle shear tests no further reduction of strength occurred in the intact softened mudstone. Consequently the tests were not carried further than 5-cycles. 3. The shear tests on the intact softened mudstone show the peak strength parameters of Cdf=1.20-1.55kg/(cm)^2 and φdf=19-22°, and the residual strength parameters of Cdr=0 and φdr=17-19°. 4. The displacement necessary to reach the residual strength along natural joint and precut plane of specimen is smaller than that of intact sample : a single cycle of reversal shear test is sufficient to reduce the strength to a value very near to the residual one. 5. The shear tests on the natural joint and the specimen with pre-cut plane show the residual strength parameters of Cdr=0 and φdr=17°, and Cdr=0 and φdr=15°, respectively. 6. The brittleness index of the intact softened mudstone ranges from 0.8 to 0.5 as σ'_n changes from 1 to 5kg/(cm)^2,and the index is related to Py/σ'_n as follows : I_B=44.2log Py/σ'_n+32.5. 7. The friction angles of fully-softened clay are slightly larger than those along the joint and pre-cut plane.","subitem_description_type":"Other"},{"subitem_description":"紀要論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学農学部"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/4203"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0370-4246"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN00250548"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"琉球大学農学部学術報告"},{"subitem_1522650068558":"en","subitem_1522650091861":"The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1978-12-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"25","bibliographicPageEnd":"281","bibliographicPageStart":"265"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"KJ00000161957.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2003217/files/KJ00000161957.pdf"},"version_id":"06f9152e-633a-47b3-bc7e-c7c26c181abe"}]},"item_title":"島尻層軟化泥岩の残留強度について(農業工学科)","item_type_id":"15","owner":"1","path":["1642837910985","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2008-02-14"},"publish_date":"2008-02-14","publish_status":"0","recid":"2003217","relation_version_is_last":true,"title":["島尻層軟化泥岩の残留強度について(農業工学科)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T01:17:50.705797+00:00"}