RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES

This paper presents the experimental data to improve the ductility of prefabricated concrete piles under the earthquake and the suggestion of restoring force model for those piles. Recently, prefabricated piles tend to be used for the pile foundation of medium and low storied buildings, because thos...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of Structural and Construction Engineering (Transactions of AIJ) 2018, Vol.83(743), pp.89-99
Hauptverfasser: IKEZAKI, Daisuke, SAKO, Yuji, OKANO, Hajime
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 99
container_issue 743
container_start_page 89
container_title Journal of Structural and Construction Engineering (Transactions of AIJ)
container_volume 83
creator IKEZAKI, Daisuke
SAKO, Yuji
OKANO, Hajime
description This paper presents the experimental data to improve the ductility of prefabricated concrete piles under the earthquake and the suggestion of restoring force model for those piles. Recently, prefabricated piles tend to be used for the pile foundation of medium and low storied buildings, because those piles are high workability and cost efficiency in comparison with cast-in-place concrete piles. On the other hand, the ductility of prefabricated piles are lower than cast-in-place concrete piles, because prefabricated piles are produced by centrifugal molding. However, the checking against deformation performance of building piles is unnecessary in the building standard law of Japan. Therefore, the ductility of piles is not enough, when the deformation becomes more excessive than assumed. The second chapter shows the improved detail and the experiment result of SC and PRC piles. SC and PRC piles are the kind of prefabricated piles. First, to improve the ductility of SC and PRC piles, the void of these filled with normal strength concrete. Furthermore, PRC piles were improved the details shown in the Fig. 2 Then, the result of the experiment is shown. The parameter of the experiment is that the infilled concrete exist or do not. In case of having infilled concrete, either pile were improved ductility under the reverse cyclic loading and constant axial loading, because compression fracture of pile concrete were prevented. Conversely, piles having the void were caused brittle fracture. After brittle fracture, SC pile was able to resist axial force. On the other hand, PRC pile was unable to resist it. The next chapter has shown the evaluation method of the restoring force model for SC and PRC piles. First, Flexural capacity of those piles are calculated by fiber model analysis. The difference of having infilled concrete or nothing were described by the stress-strain relationship of the concrete. Deformation performance of those piles is calculated by the total of Bending deformation, Shear deformation and Rotational deformation of pile head connection. Bending deformation is calculated by integration of pile curvature. Shear deformation is calculated assuming the elastic body. Calculation method for Rotational deformation is different by pile head connection type. In case of pile head connection with anchorage bars, Rotational deformation is calculated by integration of anchorage bar strain assuming the triangular distribution. Alternatively, in case of pile head
doi_str_mv 10.3130/aijs.83.89
format Article
fullrecord <record><control><sourceid>jstage_cross</sourceid><recordid>TN_cdi_crossref_primary_10_3130_aijs_83_89</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>article_aijs_83_743_83_89_article_char_en</sourcerecordid><originalsourceid>FETCH-LOGICAL-c2389-88963d23875ccb72b13780f5b2a9efdd731764f046cd7f266acc1b803681a933</originalsourceid><addsrcrecordid>eNo9j01rg0AURYfSQtO0m_4C1wXTGZ_OvFmV1IypYGMw7odx1FZJP3Cy6b-PkuLqHXjnXriEPDK6Agb02XS9WyGsUF6RBUNkPrIIrkeGkPphQINbcudcTykPJWcLwgt1KPMi3W29JC9i5b3nG5VN7O0LlaxfizRel2rjxfkuLlSpvH2aqcM9uWnN0TUP_3dJykSV8Zuf5dsxkPk2AJQ-ouRQjygiaysRVAwE0jaqAiObtq4FMMHDlobc1qINODfWsgopcGRGAizJ06XWDj_ODU2rf4fuywx_mlE9DdbTYI2gUY7yy0Xu3cl8NLNqhlNnj82sihAuifljP82gm284A8olWgc</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES</title><source>J-STAGE (Japan Science &amp; Technology Information Aggregator, Electronic) Freely Available Titles - Japanese</source><source>EZB-FREE-00999 freely available EZB journals</source><creator>IKEZAKI, Daisuke ; SAKO, Yuji ; OKANO, Hajime</creator><creatorcontrib>IKEZAKI, Daisuke ; SAKO, Yuji ; OKANO, Hajime</creatorcontrib><description>This paper presents the experimental data to improve the ductility of prefabricated concrete piles under the earthquake and the suggestion of restoring force model for those piles. Recently, prefabricated piles tend to be used for the pile foundation of medium and low storied buildings, because those piles are high workability and cost efficiency in comparison with cast-in-place concrete piles. On the other hand, the ductility of prefabricated piles are lower than cast-in-place concrete piles, because prefabricated piles are produced by centrifugal molding. However, the checking against deformation performance of building piles is unnecessary in the building standard law of Japan. Therefore, the ductility of piles is not enough, when the deformation becomes more excessive than assumed. The second chapter shows the improved detail and the experiment result of SC and PRC piles. SC and PRC piles are the kind of prefabricated piles. First, to improve the ductility of SC and PRC piles, the void of these filled with normal strength concrete. Furthermore, PRC piles were improved the details shown in the Fig. 2 Then, the result of the experiment is shown. The parameter of the experiment is that the infilled concrete exist or do not. In case of having infilled concrete, either pile were improved ductility under the reverse cyclic loading and constant axial loading, because compression fracture of pile concrete were prevented. Conversely, piles having the void were caused brittle fracture. After brittle fracture, SC pile was able to resist axial force. On the other hand, PRC pile was unable to resist it. The next chapter has shown the evaluation method of the restoring force model for SC and PRC piles. First, Flexural capacity of those piles are calculated by fiber model analysis. The difference of having infilled concrete or nothing were described by the stress-strain relationship of the concrete. Deformation performance of those piles is calculated by the total of Bending deformation, Shear deformation and Rotational deformation of pile head connection. Bending deformation is calculated by integration of pile curvature. Shear deformation is calculated assuming the elastic body. Calculation method for Rotational deformation is different by pile head connection type. In case of pile head connection with anchorage bars, Rotational deformation is calculated by integration of anchorage bar strain assuming the triangular distribution. Alternatively, in case of pile head connection embedding footing, Rotational deformation is calculated by equation (11) assuming that fixing ratio is 0.9. Then, examination result about relationship between shear force and drift angle were simulated by the suggestion method of restoring force model. The subject of the simulation were five SC piles , two improved PRC piles and twelve conventional PRC piles. As a result, suggestion method using fiber model analysis were able to evaluate the relationship between shear force and drift angle in each pile type.</description><identifier>ISSN: 1340-4202</identifier><identifier>EISSN: 1881-8153</identifier><identifier>DOI: 10.3130/aijs.83.89</identifier><language>eng</language><publisher>Architectural Institute of Japan</publisher><subject>Ductility ; Fiber Model Analysis ; Infilled Concrete ; Pile Head Connection ; Prefabricated Concrete Piles ; Restoring Force Model</subject><ispartof>Journal of Structural and Construction Engineering (Transactions of AIJ), 2018, Vol.83(743), pp.89-99</ispartof><rights>2018 Architectural Institute of Japan</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2389-88963d23875ccb72b13780f5b2a9efdd731764f046cd7f266acc1b803681a933</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,4024,27923,27924,27925</link.rule.ids></links><search><creatorcontrib>IKEZAKI, Daisuke</creatorcontrib><creatorcontrib>SAKO, Yuji</creatorcontrib><creatorcontrib>OKANO, Hajime</creatorcontrib><title>RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES</title><title>Journal of Structural and Construction Engineering (Transactions of AIJ)</title><addtitle>J. Struct. Constr. Eng.</addtitle><description>This paper presents the experimental data to improve the ductility of prefabricated concrete piles under the earthquake and the suggestion of restoring force model for those piles. Recently, prefabricated piles tend to be used for the pile foundation of medium and low storied buildings, because those piles are high workability and cost efficiency in comparison with cast-in-place concrete piles. On the other hand, the ductility of prefabricated piles are lower than cast-in-place concrete piles, because prefabricated piles are produced by centrifugal molding. However, the checking against deformation performance of building piles is unnecessary in the building standard law of Japan. Therefore, the ductility of piles is not enough, when the deformation becomes more excessive than assumed. The second chapter shows the improved detail and the experiment result of SC and PRC piles. SC and PRC piles are the kind of prefabricated piles. First, to improve the ductility of SC and PRC piles, the void of these filled with normal strength concrete. Furthermore, PRC piles were improved the details shown in the Fig. 2 Then, the result of the experiment is shown. The parameter of the experiment is that the infilled concrete exist or do not. In case of having infilled concrete, either pile were improved ductility under the reverse cyclic loading and constant axial loading, because compression fracture of pile concrete were prevented. Conversely, piles having the void were caused brittle fracture. After brittle fracture, SC pile was able to resist axial force. On the other hand, PRC pile was unable to resist it. The next chapter has shown the evaluation method of the restoring force model for SC and PRC piles. First, Flexural capacity of those piles are calculated by fiber model analysis. The difference of having infilled concrete or nothing were described by the stress-strain relationship of the concrete. Deformation performance of those piles is calculated by the total of Bending deformation, Shear deformation and Rotational deformation of pile head connection. Bending deformation is calculated by integration of pile curvature. Shear deformation is calculated assuming the elastic body. Calculation method for Rotational deformation is different by pile head connection type. In case of pile head connection with anchorage bars, Rotational deformation is calculated by integration of anchorage bar strain assuming the triangular distribution. Alternatively, in case of pile head connection embedding footing, Rotational deformation is calculated by equation (11) assuming that fixing ratio is 0.9. Then, examination result about relationship between shear force and drift angle were simulated by the suggestion method of restoring force model. The subject of the simulation were five SC piles , two improved PRC piles and twelve conventional PRC piles. As a result, suggestion method using fiber model analysis were able to evaluate the relationship between shear force and drift angle in each pile type.</description><subject>Ductility</subject><subject>Fiber Model Analysis</subject><subject>Infilled Concrete</subject><subject>Pile Head Connection</subject><subject>Prefabricated Concrete Piles</subject><subject>Restoring Force Model</subject><issn>1340-4202</issn><issn>1881-8153</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><recordid>eNo9j01rg0AURYfSQtO0m_4C1wXTGZ_OvFmV1IypYGMw7odx1FZJP3Cy6b-PkuLqHXjnXriEPDK6Agb02XS9WyGsUF6RBUNkPrIIrkeGkPphQINbcudcTykPJWcLwgt1KPMi3W29JC9i5b3nG5VN7O0LlaxfizRel2rjxfkuLlSpvH2aqcM9uWnN0TUP_3dJykSV8Zuf5dsxkPk2AJQ-ouRQjygiaysRVAwE0jaqAiObtq4FMMHDlobc1qINODfWsgopcGRGAizJ06XWDj_ODU2rf4fuywx_mlE9DdbTYI2gUY7yy0Xu3cl8NLNqhlNnj82sihAuifljP82gm284A8olWgc</recordid><startdate>2018</startdate><enddate>2018</enddate><creator>IKEZAKI, Daisuke</creator><creator>SAKO, Yuji</creator><creator>OKANO, Hajime</creator><general>Architectural Institute of Japan</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2018</creationdate><title>RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES</title><author>IKEZAKI, Daisuke ; SAKO, Yuji ; OKANO, Hajime</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c2389-88963d23875ccb72b13780f5b2a9efdd731764f046cd7f266acc1b803681a933</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Ductility</topic><topic>Fiber Model Analysis</topic><topic>Infilled Concrete</topic><topic>Pile Head Connection</topic><topic>Prefabricated Concrete Piles</topic><topic>Restoring Force Model</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>IKEZAKI, Daisuke</creatorcontrib><creatorcontrib>SAKO, Yuji</creatorcontrib><creatorcontrib>OKANO, Hajime</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of Structural and Construction Engineering (Transactions of AIJ)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>IKEZAKI, Daisuke</au><au>SAKO, Yuji</au><au>OKANO, Hajime</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES</atitle><jtitle>Journal of Structural and Construction Engineering (Transactions of AIJ)</jtitle><addtitle>J. Struct. Constr. Eng.</addtitle><date>2018</date><risdate>2018</risdate><volume>83</volume><issue>743</issue><spage>89</spage><epage>99</epage><pages>89-99</pages><issn>1340-4202</issn><eissn>1881-8153</eissn><abstract>This paper presents the experimental data to improve the ductility of prefabricated concrete piles under the earthquake and the suggestion of restoring force model for those piles. Recently, prefabricated piles tend to be used for the pile foundation of medium and low storied buildings, because those piles are high workability and cost efficiency in comparison with cast-in-place concrete piles. On the other hand, the ductility of prefabricated piles are lower than cast-in-place concrete piles, because prefabricated piles are produced by centrifugal molding. However, the checking against deformation performance of building piles is unnecessary in the building standard law of Japan. Therefore, the ductility of piles is not enough, when the deformation becomes more excessive than assumed. The second chapter shows the improved detail and the experiment result of SC and PRC piles. SC and PRC piles are the kind of prefabricated piles. First, to improve the ductility of SC and PRC piles, the void of these filled with normal strength concrete. Furthermore, PRC piles were improved the details shown in the Fig. 2 Then, the result of the experiment is shown. The parameter of the experiment is that the infilled concrete exist or do not. In case of having infilled concrete, either pile were improved ductility under the reverse cyclic loading and constant axial loading, because compression fracture of pile concrete were prevented. Conversely, piles having the void were caused brittle fracture. After brittle fracture, SC pile was able to resist axial force. On the other hand, PRC pile was unable to resist it. The next chapter has shown the evaluation method of the restoring force model for SC and PRC piles. First, Flexural capacity of those piles are calculated by fiber model analysis. The difference of having infilled concrete or nothing were described by the stress-strain relationship of the concrete. Deformation performance of those piles is calculated by the total of Bending deformation, Shear deformation and Rotational deformation of pile head connection. Bending deformation is calculated by integration of pile curvature. Shear deformation is calculated assuming the elastic body. Calculation method for Rotational deformation is different by pile head connection type. In case of pile head connection with anchorage bars, Rotational deformation is calculated by integration of anchorage bar strain assuming the triangular distribution. Alternatively, in case of pile head connection embedding footing, Rotational deformation is calculated by equation (11) assuming that fixing ratio is 0.9. Then, examination result about relationship between shear force and drift angle were simulated by the suggestion method of restoring force model. The subject of the simulation were five SC piles , two improved PRC piles and twelve conventional PRC piles. As a result, suggestion method using fiber model analysis were able to evaluate the relationship between shear force and drift angle in each pile type.</abstract><pub>Architectural Institute of Japan</pub><doi>10.3130/aijs.83.89</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record>
fulltext fulltext
identifier ISSN: 1340-4202
ispartof Journal of Structural and Construction Engineering (Transactions of AIJ), 2018, Vol.83(743), pp.89-99
issn 1340-4202
1881-8153
language eng
recordid cdi_crossref_primary_10_3130_aijs_83_89
source J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese; EZB-FREE-00999 freely available EZB journals
subjects Ductility
Fiber Model Analysis
Infilled Concrete
Pile Head Connection
Prefabricated Concrete Piles
Restoring Force Model
title RESTORING FORCE MODEL FOR PREFABRICATED CONCRETE PILES
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-25T19%3A56%3A17IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstage_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=RESTORING%20FORCE%20MODEL%20FOR%20PREFABRICATED%20CONCRETE%20PILES&rft.jtitle=Journal%20of%20Structural%20and%20Construction%20Engineering%20(Transactions%20of%20AIJ)&rft.au=IKEZAKI,%20Daisuke&rft.date=2018&rft.volume=83&rft.issue=743&rft.spage=89&rft.epage=99&rft.pages=89-99&rft.issn=1340-4202&rft.eissn=1881-8153&rft_id=info:doi/10.3130/aijs.83.89&rft_dat=%3Cjstage_cross%3Earticle_aijs_83_743_83_89_article_char_en%3C/jstage_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true