CAST-IN-PLACE REINFORCED CONCRETE EXPANSION BOTTOM PILE
PURPOSE:To enable smooth and effective transmission of the load of an upper structure to a support ground by a method wherein the length of a cast-in-place reinforced concrete pile the long term allowable support force of which is determined according to a relation formula is set to a value higher t...
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| creator | YAMAGATA YUKITSUGU TAKAHASHI MASAAKI INOUE YOSHINOBU OTSUKA YOSHIYUKI SAKAMOTO KAZUYOSHI MATSUDA SHIGERU HOSAKA YONOSUKE KASAMA SHIRO OKUDA SHUJI SUNAMI SADAHIKO SUZUKI TADAHIKO ISOHATA OSAMU KAWAI YOSHIMOTO MIKUMO MASAO SHIMIZU ISAMU |
| description | PURPOSE:To enable smooth and effective transmission of the load of an upper structure to a support ground by a method wherein the length of a cast-in-place reinforced concrete pile the long term allowable support force of which is determined according to a relation formula is set to a value higher than a given length and the tip part of a pile shaft is expanded. CONSTITUTION:The length of a cast-in-place reinforced concrete expansion bottom pile is set to 5.5mm or more, and the size of the bottom of the tip thereof is increased to a value sharply higher than a shaft diameter (r) by an expansion part 2 formed at the periphery of the tip part. The height of the expansion part is regulated to a value 4.1 times or more as large as a shaft radius, the vertical height of an expansion inclination part to a value approximate 3 times as large as a shaft radius, and the radius of the expansion bottom to approximate 1.78 times as large as a shaft radius. The inclination angle of the sectional rapid change part of an expansion inclination part is limited to a range of 11 deg.26'-11 deg.30'. This constitution relieves the local stress of the sectional rapid change part and hardly generates a crack. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JPH0610342A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JPH0610342A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JPH0610342A3</originalsourceid><addsrcrecordid>eNrjZDB3dgwO0fX00w3wcXR2VQhy9fRz8w9ydnVRcPb3cw5yDXFVcI0IcPQL9vT3U3DyDwnx91UI8PRx5WFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8V4BHgZmhgbGJkaOxkQoAQDr2Cfn</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>CAST-IN-PLACE REINFORCED CONCRETE EXPANSION BOTTOM PILE</title><source>esp@cenet</source><creator>YAMAGATA YUKITSUGU ; TAKAHASHI MASAAKI ; INOUE YOSHINOBU ; OTSUKA YOSHIYUKI ; SAKAMOTO KAZUYOSHI ; MATSUDA SHIGERU ; HOSAKA YONOSUKE ; KASAMA SHIRO ; OKUDA SHUJI ; SUNAMI SADAHIKO ; SUZUKI TADAHIKO ; ISOHATA OSAMU ; KAWAI YOSHIMOTO ; MIKUMO MASAO ; SHIMIZU ISAMU</creator><creatorcontrib>YAMAGATA YUKITSUGU ; TAKAHASHI MASAAKI ; INOUE YOSHINOBU ; OTSUKA YOSHIYUKI ; SAKAMOTO KAZUYOSHI ; MATSUDA SHIGERU ; HOSAKA YONOSUKE ; KASAMA SHIRO ; OKUDA SHUJI ; SUNAMI SADAHIKO ; SUZUKI TADAHIKO ; ISOHATA OSAMU ; KAWAI YOSHIMOTO ; MIKUMO MASAO ; SHIMIZU ISAMU</creatorcontrib><description>PURPOSE:To enable smooth and effective transmission of the load of an upper structure to a support ground by a method wherein the length of a cast-in-place reinforced concrete pile the long term allowable support force of which is determined according to a relation formula is set to a value higher than a given length and the tip part of a pile shaft is expanded. CONSTITUTION:The length of a cast-in-place reinforced concrete expansion bottom pile is set to 5.5mm or more, and the size of the bottom of the tip thereof is increased to a value sharply higher than a shaft diameter (r) by an expansion part 2 formed at the periphery of the tip part. The height of the expansion part is regulated to a value 4.1 times or more as large as a shaft radius, the vertical height of an expansion inclination part to a value approximate 3 times as large as a shaft radius, and the radius of the expansion bottom to approximate 1.78 times as large as a shaft radius. The inclination angle of the sectional rapid change part of an expansion inclination part is limited to a range of 11 deg.26'-11 deg.30'. This constitution relieves the local stress of the sectional rapid change part and hardly generates a crack.</description><edition>5</edition><language>eng</language><subject>EMBANKMENTS ; EXCAVATIONS ; FIXED CONSTRUCTIONS ; FOUNDATIONS ; HYDRAULIC ENGINEERING ; SOIL SHIFTING ; UNDERGROUND OR UNDERWATER STRUCTURES</subject><creationdate>1994</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940118&DB=EPODOC&CC=JP&NR=H0610342A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19940118&DB=EPODOC&CC=JP&NR=H0610342A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YAMAGATA YUKITSUGU</creatorcontrib><creatorcontrib>TAKAHASHI MASAAKI</creatorcontrib><creatorcontrib>INOUE YOSHINOBU</creatorcontrib><creatorcontrib>OTSUKA YOSHIYUKI</creatorcontrib><creatorcontrib>SAKAMOTO KAZUYOSHI</creatorcontrib><creatorcontrib>MATSUDA SHIGERU</creatorcontrib><creatorcontrib>HOSAKA YONOSUKE</creatorcontrib><creatorcontrib>KASAMA SHIRO</creatorcontrib><creatorcontrib>OKUDA SHUJI</creatorcontrib><creatorcontrib>SUNAMI SADAHIKO</creatorcontrib><creatorcontrib>SUZUKI TADAHIKO</creatorcontrib><creatorcontrib>ISOHATA OSAMU</creatorcontrib><creatorcontrib>KAWAI YOSHIMOTO</creatorcontrib><creatorcontrib>MIKUMO MASAO</creatorcontrib><creatorcontrib>SHIMIZU ISAMU</creatorcontrib><title>CAST-IN-PLACE REINFORCED CONCRETE EXPANSION BOTTOM PILE</title><description>PURPOSE:To enable smooth and effective transmission of the load of an upper structure to a support ground by a method wherein the length of a cast-in-place reinforced concrete pile the long term allowable support force of which is determined according to a relation formula is set to a value higher than a given length and the tip part of a pile shaft is expanded. CONSTITUTION:The length of a cast-in-place reinforced concrete expansion bottom pile is set to 5.5mm or more, and the size of the bottom of the tip thereof is increased to a value sharply higher than a shaft diameter (r) by an expansion part 2 formed at the periphery of the tip part. The height of the expansion part is regulated to a value 4.1 times or more as large as a shaft radius, the vertical height of an expansion inclination part to a value approximate 3 times as large as a shaft radius, and the radius of the expansion bottom to approximate 1.78 times as large as a shaft radius. The inclination angle of the sectional rapid change part of an expansion inclination part is limited to a range of 11 deg.26'-11 deg.30'. 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CONSTITUTION:The length of a cast-in-place reinforced concrete expansion bottom pile is set to 5.5mm or more, and the size of the bottom of the tip thereof is increased to a value sharply higher than a shaft diameter (r) by an expansion part 2 formed at the periphery of the tip part. The height of the expansion part is regulated to a value 4.1 times or more as large as a shaft radius, the vertical height of an expansion inclination part to a value approximate 3 times as large as a shaft radius, and the radius of the expansion bottom to approximate 1.78 times as large as a shaft radius. The inclination angle of the sectional rapid change part of an expansion inclination part is limited to a range of 11 deg.26'-11 deg.30'. This constitution relieves the local stress of the sectional rapid change part and hardly generates a crack.</abstract><edition>5</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | EMBANKMENTS EXCAVATIONS FIXED CONSTRUCTIONS FOUNDATIONS HYDRAULIC ENGINEERING SOIL SHIFTING UNDERGROUND OR UNDERWATER STRUCTURES |
| title | CAST-IN-PLACE REINFORCED CONCRETE EXPANSION BOTTOM PILE |
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