ＩＳＳＮ１３４６－７８３２

国立研究開発法人海上・港湾・航空技術研究所

港湾空港技術研究所
報告
REPORT OF
THE PORT AND AIRPORT RESEARCHINSTITUTE

VOL.56

No.3 September

NAGASE,YOKOSUKA,JAPANNATIONAL INSTITUTE OF MARITIME,PORT AND AVIATION TECHNOLOGY

2017

港湾空港技術研究所報告（REPORT OF PARI）
第 56 巻

第 3 号（Vol. 56,

目

No. 3）,

2017 年9月（September 2017）

次（CONTENTS）

1. 杭間地盤をセメント固化改良した組杭の横抵抗特性······························· 松村聡，松原宗伸，藤井愛彦，水谷崇亮，森川嘉之，佐藤真 ·······

3（Lateral resistance of coupled piles with its intermediate soil stabilized by cement treating method············································ Satoshi MATSUMURA, Takanobu MATSUBARA, Naruhiko FUJII,
Takaaki MIZUTANI, Yoshiyuki MORIKAWA, Makoto SATO）
2. 画像解析に基づいた粒状体材料の変形挙動の評価と数値再現手法の提案··································································································· 高野大樹 ······

29（Evaluation of Deformation Process of Granular Materials Based on Image Processingand Development of Numerical Simulation Method················································································································· Daiki TAKANO）
3. 数値解析および模型実験によるレベル１地震動に対する胸壁の照査用震度算出手法の検討···················································································· 小濱英司，府川裕史 ······

49（Numerical Analysis and Model Testing on a Method for Evaluationof Coastal Parapet Levees’ Seismic Coefficients for Level-1 Earthquakes······················································································ Eiji KOHAMA, Hirofumi FUKAWA）

港湾空港技術研究所報告第 56 巻第 3 号(2017.9)

杭間地盤をセメント固化改良した組杭の横抵抗特性
松村 聡*・松原 宗伸**・藤井 愛彦***
水谷 崇亮****・森川 嘉之*****・佐藤 真******

要旨

本研究は，矢板式係船岸の控え工として用いられる組杭の横抵抗メカニズムを実験的に明らかにするとともに，組杭の横抵抗増加のために効果的な地盤改良方法を検討した．本研究では，杭の水平載荷に関する遠心模型実験，大型模型実験および X 線 CT 装置を用いた模型実験を行った．実験
結果や既往の知見から，組杭を構成する押込み杭と引抜き杭に挟まれた杭間地盤が発揮する地盤反力は，単杭における周辺地盤の地盤反力と比べて小さいことがわかった．そこで，地盤反力増加を目的として杭間地盤をセメント固化改良する方法を考案し，各種模型実験を行って杭間地盤が改良された組杭の横抵抗特性を詳細に調べた．本研究では，組杭の横抵抗特性に及ぼす改良体の改良深さおよび改良体の強度・剛性の影響を調べ，効果的な改良方法を明らかにした．これらの実験結果に基づいて，既存の組杭を改良することを目的として，改良断面の決定方法を示した．
キーワード：組杭，横抵抗，セメント固化改良，水平載荷試験，X 線 CT スキャン
* 地盤研究領域・基礎工研究グループ・研究官** 四国地方整備局（前地盤研究領域・地盤改良グループ・研究員）*** 地盤研究領域・地盤改良グループ・研究員**** 地盤研究領域・基礎工研究グループ長***** 地盤研究領域長兼土質研究グループ長****** 東北地方整備局・仙台港湾空港技術調査事務所〒239-0826 神奈川県横須賀市長瀬3-1-1
国立研究開発法人 海上・港湾・航空技術研究所 港湾空港技術研究所
電話：046-844-5057
Fax：046-844-0618
E-mail：matsumura-s@pari.go.jp-3-

REPORT OF THE PORT AND
AIRPORT RESEARCH INSTITUTE
Vol.56 No.3 (Sep.2017)

Lateral resistance of coupled piles with its intermediate soil
stabilized by cement treating method

Satoshi MATSUMURA*
Takanobu MATSUBARA**
Naruhiko FUJII***
Takaaki MIZUTANI****
Yoshiyuki MORIKAWA*****
Makoto SATO******

Synopsis
The aim of this study is to reveal a useful soil stabilization method to increase lateral resistanceof existing coupled piles. The authors conducted three kinds of lateral loading tests of coupledpiles; centrifuge model test, large-scale model test and X-ray CT scanning model test. The authors
discuss how a pair of coupled piles resists against lateral loading compared with a single tilted pile.
The experimental results show the ground intermediating between two tilted piles composing a pairof coupled piles exerts lower ground reaction compared with the ground surrounding a single tilted
pile.
The paper describes a method to stabilize the intermediate ground of coupled piles using cement
treating technique. The paper also describes experimental results of the model tests to evaluate
effects of several conditions in terms of depth and strength of cement-treated soil on the lateralresistance of coupled piles for which the intermediate ground is stabilized with its mechanism of
increasing lateral resistance. Based on the experimental results, the authors introduce how todetermine the specific of soil stabilization of intermediate soil.
Key Words: Coupled piles, lateral resistance, cement-treating method, horizontal loading test,
X-ray CT scanning* Researcher of Foundations Group, Geotechnical Engineering Department** Shikoku Regional Development Bureau (Formerly Member of Soil Stabilization Group, GeotechnicalEngineering Department)*** Member of Soil Stabilization Group, Geotechnical Engineering Department**** Head of Foundations Group, Geotechnical Engineering Department***** Director of Geotechnical Engineering Department, Head of Soil-Mechanics and Geo-Environment Group****** Sendai Research and Engineering Office for Port and Airport, Tohoku Regional Development Bureau
3-1-1, Nagase, Yokosuka, Kanagawa 239-0826, Japan
National Research and Development Agency,
National Institute of Maritime, Port and Aviation Technology, Port and Airport Research Institute
Phone: +81-46-844-5057
Fax: +81-46-844-0618
E-mail: matsumura-s@pari.go.jp

-4-

目

要

次

旨 ························································································································

3

1. はじめに ·····················································································································

7

2. 既往の研究 ················································································································

7

3. 模型実験 ···················································································································

83.1

概要 ····················································································································· 8

3.2

遠心模型実験 ········································································································· 93.3大型模型実験 ······································································································· 11

3.4

X線CT模型実験 ····································································································· 12

4. 実験結果 ··················································································································· 14
4.1

組杭の横抵抗特性 ································································································ 14

4.2

杭間改良された組杭の横抵抗特性 ·········································································· 164.3

杭間改良による横抵抗増加のメカニズム ································································· 18

5. 杭間改良された組杭の横抵抗評価手法 ·········································································· 20
6. 結論 ·························································································································· 21
7. おわりに ··················································································································· 22
謝辞 ······························································································································ 22
参考文献 ························································································································ 22
記号表 ··························································································································· 22
付録A ····························································································································· 23
付録B ····························································································································· 25-5-ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ ࡣࡌࡵ࡟㏆ᖺ㸪᪤タ ᪤ ࡢ◊✲‴ᵓ㐀≀ࡢᶵ⬟ᙉ໬㸦⪏㟈ᙉ໬㸪ᓊቨቑ⤌ᮺࡢᶓ᢬ᢠࢆホ౯ࡍࡿࡓࡵ࡟㸪⌧ᅾࡢ‴ᇶ‽㸦᪥῝➼㸧ࡢせᮃࡀ㧗ࡲࡗ࡚࠾ࡾ㸪▮ᯈᘧಀ⯪ᓊࡢ᥍࠼⤌ᮺᮏ㸦௨ୗ㸪⤌ᮺ࡜࠸࠺㸧ࡢᶓ᢬ᢠቑຍࡀ᪂ࡓ࡞ㄢ㢟࡜࡞ࡗᢠຊࡢࡳࢆ⪃៖ࡍࡿ᪉ἲ࡜㸪㍈᪉ྥ᢬ᢠຊཬࡧ㍈┤ゅ᪉࡚࠸ࡿ㸬⌧ᅾࡢࠕ‴ࡢ᪋タࡢᢏ⾡ୖࡢᇶ‽࣭ྠゎㄝࠖྥ᢬ᢠຊࡢ཮᪉ࢆᮇᚅࡍࡿ᪉ἲࡀ♧ࡉࢀ࡚࠸ࡿ㸬ࡋ࠿ࡋ㸪‴ᇶ‽࡜࠸࠺㸧࡛ࡣ㸪᪤タ⤌ᮺࡢᶓ᢬ᢠቑຍ

⤌ᮺࡢᶓ᢬ᢠࡀⓎ᥹ࡉࢀࡿ࣓࢝ࢽࢬ࣒ࡣᮍゎ᫂࡞Ⅼࡀከ

࡟㈨ࡍࡿලయⓗ࡞ᨵⰋ᪉ἲࡀ༑ศ࡟♧ࡉࢀ࡚࠾ࡽࡎ㸪⌧ࡃ㸪࡝ࡢࡼ࠺࡞ሙྜ࡟࡝ࡕࡽࡢ᪉ἲࢆ⏝࠸ࢀࡤⰋ࠸ࡢ࠿㸪ሙẖ࡟ಶูࡢᑐᛂࢆ㏕ࡽࢀ࡚࠸ࡿ㸬᪤タࡢ⤌ᮺࡢᶓ᢬ᢠ

ࡑࢀࡒࢀࡢ᪉ἲࡢᚓኻ➼ࡣ༑ศ࡟♧ࡉࢀ࡚࠾ࡽࡎ㸪タィቑຍࢆຠ⋡Ⰻࡃ㐍ࡵࡿࡓࡵ࡟ࡣ㸪ຠᯝⓗ࡞ᨵⰋ᪉ἲࢆయ

⪅ࡢุ᩿࡟ጤࡡࡽࢀ࡚࠸ࡿ㸬㸦௨ୗ㸪⣔ⓗ࡟ࡲ࡜ࡵࡿࡇ࡜ࡀႚ⥭ࡢㄢ㢟࡜ゝ࠼ࡿ㸬‴༠఍㸪2007a㸧࡛ࡣ⤌ᮺࢆᵓᡂࡍࡿྛᮺࡢ㍈᪉ྥ᢬

㍈┤ゅ᪉ྥ᢬ᢠຊࢆ⪃៖ࡋ࡞࠸ሙྜ㸪⤌ᮺࡣ▮ᯈቨࡢᮏ◊✲ࡣ㸪⤌ᮺࡢᶓ᢬ᢠࡢⓎ⏕࣓࢝ࢽࢬ࣒ࢆ᫂ࡽ࠿࡟

୺ാᔂቯ㡿ᇦእ࡟ฟࡿ఩⨨ࡲ࡛㝣ഃ࡟ୗࡆࢀࡤⰋ࠸࡜ࡉ

ࡍࡿ࡜࡜ࡶ࡟㸪ᶓ᢬ᢠቑຍࡢࡓࡵ⤌ᮺ࿘㎶ᆅ┙ࡢᆅ┙ᨵࢀ㸪▮ᯈቨ࡟ẚ㍑ⓗ㏆࠸఩⨨࡟⤌ᮺࢆタࡅࡿࡇ࡜ࡀྍ⬟Ⰻ࡟ࡼࡿຠᯝⓗ࡞ᨵⰋ᪉ἲࢆ㛤Ⓨࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚࡜࡞ࡿ㸬୍᪉㸪㍈┤ゅ᪉ྥ᢬ᢠຊࢆ⪃៖ࡍࡿሙྜ࡟ࡣ㸪࠸ࡿ㸬ᮺࡢỈᖹ㍕Ⲵ࡟㛵ࡍࡿ㐲ᚰᶍᆺᐇ㦂㸪኱ᆺᶍᆺᐇ

▮ᯈቨࡢ୺ാᔂቯ㡿ᇦ࡟ຍ࠼࡚⤌ᮺ๓㠃ࡢཷാᔂቯ㡿ᇦ㦂࠾ࡼࡧ X ⥺ CT ⿦⨨ࢆ⏝࠸ࡓᶍᆺᐇ㦂㸦௨ୗ㸪X ⥺ CTࢆ⪃៖ࡍࡿᚲせࡀ࠶ࡾ㸪୧⪅ࡀ࣮࢜ࣂ࣮ࣛࢵࣉࡋ࡞࠸ࡼ

ᶍᆺᐇ㦂࡜࠸࠺㸧ࢆ⾜࠸㸪ᮺ㛫ᆅ┙ࢆᨵⰋࡋࡓ⤌ᮺࡢᶓ࠺࡟⤌ᮺࡣ࠿࡞ࡾ㝣ഃ࡟ୗࡆࡽࢀࡓ㓄⨨࡜࡞ࡿ㸬㍈᪉ྥ᢬ᢠ≉ᛶ࡟ຍ࠼࡚ᨵⰋయࡢ㓄⨨㸦ᅗ ୰ࡢᮺ㛫ᆅ┙㸪᢬ᢠຊࡢࡳࢆ⪃៖ࡍࡿ᪉ἲࡀẚ㍑ⓗ༢⣧࡞ࡶࡢ࡛࠶ࡿ୍

๓㠃ᆅ┙ࡲࡓࡣࡑࡢ୧᪉㸧㸪ᮺ㛫ᆅ┙ࡢᨵⰋࡢ῝ࡉ㸪ᨵⰋ᪉㸪㍈┤ゅ᪉ྥ᢬ᢠຊࢆ⪃៖ࡍࡿ᪉ἲ࡟ࡘ࠸࡚ࡣ㸪᪤ యࡢᙉᗘ࣭๛ᛶࡢᙳ㡪ࢆㄪ࡭ࡓ㸬௨ୗ࡛ࡣ㸪ᮺ㛫ᆅ┙ࢆࡢ◊✲ࡢ୰࡛ᵝࠎ࡞ィ⟬ᡭἲࡀᥦ᱌ࡉࢀ࡚࠸ࡿ㸬࠸ࡎࢀᨵⰋࡍࡿ᪉ἲࢆᮺ㛫ᨵⰋ࡜࠸࠺㸬ࡢᡭἲࡶ⤌ᮺ࡟స⏝ࡍࡿእຊ࡜ᮺࡢ㍈᪉ྥຊ࠾ࡼࡧ㍈┤ᮏሗ࿌࡛ࡣ㸪᪤タ⤌ᮺ࡟ᑐࡋ࡚ᮺ㛫ᨵⰋࢆ⾜࠺ሙྜࡢゅ᪉ྥຊࡢྜຊࡀࡘࡾྜ࠺ࡇ࡜㸪⤌ᮺࡢ⤖ྜ㒊࡛ྛᮺࡢึᮇタィ᩿㠃㸦ᮺ㛫ᨵⰋࡢ῝ࡉࡸᨵⰋయࡢᙉᗘ➼㸧ࢆỴኚ఩ࡀ୍⮴ࡍࡿࡇ࡜ࢆ᮲௳࡜ࡋ࡚ィ⟬ࢆ㐍ࡵࡿⅬࡀඹ㏻ᐃࡍࡿࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚㸪ᐇ㦂⤖ᯝ࡟ᇶ࡙࠸ࡓᶓ᢬ᢠቑ

ࡋ࡚࠸ࡿࡀ㸪௨ୗࡢࡼ࠺࡞≉ᚩࢆࡶࡘ㸬ຍࡢホ౯ᡭἲࢆ᪂ࡓ࡟⪃᱌ࡋࡓ㸬ࡇࡇ࡛ࡣ㟼ⓗタィࢆᑐᶓᒣ㸦1963㸧ࡣ㸪㍈᪉ྥ㸪㍈┤ゅ᪉ྥ࡜ࡶ࡟㸪ᮺ㢌࡟㇟࡜ࡋ᳨࡚ウࡋࡓࡀ㸪ᩘ್ゎᯒࡀᚲせ࡜࡞ࡿ⪏㟈タィࢆ࠾ࡅࡿຊ࡜ኚ఩ࡢ㛵ಀࡀ⥺ᆺᙎᛶ࡛࠶ࡿ࡜ࡋ࡚ィ⟬ࢆ㐍⾜࠺ሙྜ࡟࠾࠸࡚ࡶ㸪ࡑࡢึᮇタィ᩿㠃ࢆỴᐃࡍࡿୖ࡛

ࡵࡿ᪉ἲࢆᥦ᱌ࡋ࡚࠸ࡿ㸬ࡍ࡞ࢃࡕ㸪ᮺ㢌࡟࠾࠸࡚ᮺࡢᮏホ౯ᡭἲࡀཧ⪃࡜࡞ࡿ㸬⪃᱌ࡉࢀࡓホ౯ᡭἲࢆ௬᝿ⓗ㍈᪉ྥࡢኚ఩㔞ࡣ㍈᪉ྥຊ࡟㸪㍈┤ゅ᪉ྥࡢኚ఩㔞ࡣ㍈࡞᩿㠃࡟㐺⏝ࡋࡓィ⟬౛ࡀ௜㘓 % ࡟♧ࡉࢀ࡚࠸ࡿࡢ࡛ే

┤ゅ᪉ྥຊ࡟ẚ౛ࡍࡿ࡜௬ᐃࡍࡿ㸬㍈᪉ྥࡢẚ౛ಀᩘࡣ㸪ࡏ࡚ཧ↷ࡉࢀࡓ࠸㸬ᮺࢆᙎᛶయ࡜⪃࠼࡚㸪ᨭᣢᮺࡢሙྜࡣᮺඛ➃࡛ᅛᐃࡉࢀ
ࡓࡶࡢ࡜ࡋ㸪ᦶ᧿ᮺࡢሙྜࡣᆅ┙᮲௳࡟ᛂࡌ࡚ᮺ࿘㠃࡟࠾ࡅࡿᦶ᧿ຊࡢศᕸࢆ௬ᐃࡍࡿࡇ࡜࡛ồࡵࡽࢀ࡚࠸ࡿ㸬᥍䛘⤌ᮺ

㍈┤ゅ᪉ྥࡢẚ౛ಀᩘࡣ㸪Chang ࡢ᪉ἲ㸦᪥ᮏ䝍䜲ᮦ

2007a㸧࡟ࡼࡿᮺࡢ㍈┤ゅ᪉ྥ᢬ᢠຊࡢ⪃࠼᪉࡟ᇶ࡙࠸࡚
࠾ࡾ㸪ᮺࡢ≉ᛶ್ࡸᮺࡢᆅୖ㒊㛗ࢆ⏝࠸࡚♧ࡉࢀ࡚࠸ࡿ

ᮺ㛫ᆅ┙
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▮ᯈቨ

‴༠఍㸪

㸦Chang ࡢ᪉ἲ࡟ࡼࡿ࡜ᮺ㢌ࡢ㍈┤ゅ᪉ྥኚ఩ࡣᮺ㢌࡟స⏝ࡍࡿ㍈┤ゅ᪉ྥຊ࡟ẚ౛ࡍࡿ㸧㸬ࡇࡢ࡜ࡁᆅ┙཯ຊಀᩘࡣᮺࡢഴゅ࡟ᛂࡌ࡚⿵ṇࡍࡿ㸬ᢲ㎸䜏ᮺ
(Push-in)㟷ᮌ㸦1970㸧ࡣ㸪ᶓᒣ㸦1963㸧ࡢ᪉ἲࢆᣑᙇࡋ㸪㍈᪉ᘬᢤ䛝ᮺ(Pull-out)ྥ࠾ࡼࡧ㍈┤ゅ᪉ྥ࡜ࡶ࡟ᙎረᛶⓗ࡞ᣲືࢆࡍࡿࡶࡢ࡜

ᅗ ⤌ᮺࡢᆅ┙ᨵⰋࡢᴫせᅗ࡟㐩ࡍࡿࡲ࡛ࡣᮺࡣᙎᛶỿୗࡋ㸪㍈᪉ྥ᢬ᢠຊࢆ㉺࠼ࡿࡋ࡚ィ⟬ࢆ⾜ࡗࡓ㸬ࡍ࡞ࢃࡕ㸪㍈᪉ྥຊࡀ㍈᪉ྥ᢬ᢠຊ
࡜ỿୗࡣ↓㝈࡟㐍ࡴ࡜௬ᐃࡍࡿ㸬ࡲࡓ㸪㍈┤ゅ᪉ྥ࡟ࡘ࠸࡚ࡣ㸪᭤ࡆ࣮࣓ࣔࣥࢺ࡟ࡼࡿᮺࡢ᭱኱ᛂຊࡀ㝆అⅬ࡟㐩ࡍࡿࡲ࡛ࡣᙎᛶ࡜ࡋ㸪㝆అⅬࢆ㉺࠼ࡿ࡜ࡑࢀ௨ୖࡢ᭤
-7-ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ࡆ࣮࣓ࣔࣥࢺ࡟ࡣ᢬ᢠ࡛ࡁࡎኚ఩ࡀ↓㝈࡟኱ࡁࡃ࡞ࡿ࡜

㛫ᆅ┙ࡢࡼ࠺࡞ᮺࡢୗ㠃࡛ࡣ SCP ࡢ᪋ᕤࡀࡑࡶࡑࡶᅔ㞴⪃࠼ࡿ㸬ࡑࡢ㝿㸪ᒁ㒊ᗙᒅࡸ඲యᗙᒅࡢᙳ㡪ࡣ⪃៖ࡋ࡞࡛࠶ࡾ㸪⤌ᮺࡢࡼ࠺࡞ᩳᮺᵓ㐀࡬ࡢ㐺⏝࡟ࡣㄢ㢟ࡀከ࠸ࡶ࠸࡜ࡋ࡚࠸ࡿ㸬ᙎᛶ⠊ᅖ࡟࠾ࡅࡿᣲືࡣ㸪ᶓᒣ㸦1963㸧

ࡢ࡜⪃࠼ࡽࢀࡿ㸬ࡢሙྜ࡜ྠᵝ࡛㍈᪉ྥ㸪㍈┤ゅ᪉ྥ࡜ࡶ⥺ᆺᙎᛶࢆ௬ᐃ

ᶓ᢬ᢠቑຍࡢࡓࡵࡢ᥍࠼ᕤ࡟ᑐࡍࡿᨵⰋ᪉ἲࡀࡇࢀࡲ

ࡋ࡚࠸ࡿ㸬ࡉࡽ࡟㸪⤌ᮺࡢ◚ቯ㡰ᗎ㸦ረᛶ໬ࡀ⏕ࡌࡿ㡰࡛࠸ࡃࡘ࠿ᥦ᱌ࡉࢀ࡚࠸ࡿࡀ㸪௒ᚋ┈ࠎቑຍࡋ㸪ከᵝ໬ࡍᗎ㸧ࢆ᝿ᐃࡋ㸪⤌ᮺࡢᶓ᢬ᢠࡢᴟ㝈್㸦⤊ᒁ⪏ຊ㸧ࢆ᥎ࡿ࡜⪃࠼ࡽࢀࡿ▮ᯈᘧಀ⯪ᓊࡢᨵⰋ஦᱌࡟ᑐᛂࡍࡿࡓࡵ

ᐃࡍࡿ᪉ἲࡀ♧ࡉࢀ࡚࠸ࡿ㸬࡟ࡣ㸪᪤Ꮡࡢ᪉ἲࡀᣢࡘ๓㏙ࡢࡼ࠺࡞ㄢ㢟ࢆゎỴࡋࡓ᪂ࡓ℩ᕝࡽ㸦1970㸧ࡣ㸪㍈᪉ྥ㸪㍈┤ゅ᪉ྥ࡜ࡶ࡟㸪ᮺ㢌࡞ᨵⰋ᪉ἲࡀᮃࡲࢀࡿ㸬ᮏ◊✲࡛ᥦ᱌ࡍࡿᮺ㛫ᨵⰋࡣ㸪⤌࡟࠾ࡅࡿຊ࡜ኚ఩ࡢ㛵ಀࡀ㠀⥺ᆺᙎᛶ࡛࠶ࡿ࡜௬ᐃࡋ࡚

ᮺࡢᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡍࡿࡶࡢ࡛࠶ࡿ㸬㧗ᅽᄇ࠸ࡿ㸬ࡲࡓ㸪Sawaguchi, M.㸦1970㸧ࡣ㸪㍈᪉ྥ㸪㍈┤ゅᑕᨩᢾᕤἲ➼࡟ࡼࡿᮺ㛫ᨵⰋࡢ᪋ᕤࢆ᝿ᐃࡍࡿ࡜㸪㗰⟶ᮺ᪉ྥ࡜ࡶ࡟㸪༢ᮺࡢᐇ㦂⤖ᯝࢆ⏝࠸࡚ᐃࡵࡓᣲືࢆ࡜ࡿࡢᡴタࡸ SCP ࡢ᪋ᕤ࡜ẚ㍑ࡋ࡚㸪᪋ᕤ✵㛫ࡸ᪋ᕤ᫬㛫㸪ࡶࡢ࡜ࡋ࡚ィ⟬ࢆ㐍ࡵࡿ᪉ἲࢆᥦ᱌ࡋ࡚࠸ࡿ㸬⊃✽㒊࡬ࡢ᪋ᕤᛶࡢⅬ࡛ඃࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀ㸪ᓊቨࢆ౪⏝ࡋ࡞ࡀࡽ㝈ࡽࢀࡓ᪋ᕤ✵㛫࡛ࡢᕤ஦ࡀồࡵࡽࢀࡿሙྜ

ࡇࢀࡽࡢ᪉ἲࡣ㸪༢ᮺ࡟࠾ࡅࡿᚑ᮶ࡢᶓ᢬ᢠホ౯ᡭἲࡸ࡟᭷ຠ࡛࠶ࡿࡇ࡜ࡀᮇᚅ࡛ࡁࡿ㸬ᐇ㦂⤖ᯝ࡟ᇶ࡙࠸࡚㍈┤ゅ᪉ྥ᢬ᢠຊࡢᙳ㡪ࢆᕦࡳ࡟ྲྀ
ࡾධࢀࡓࡶࡢ࡛࠶ࡿࡀ㸪⌧ᆅ࡟࠾ࡅࡿ⤌ᮺࡢ࿘㎶ᆅ┙㸪≉ ᶍᆺᐇ㦂࡟ᮺ㛫ᆅ┙ࡢᆅ┙཯ຊ≉ᛶࡸᮺ㢌ࡢᣊ᮰᮲௳ࡀ୙᫂☜࡛࠶ࡿ➼㸪㐺⏝࡟㝿ࡋ࡚ࡣ᳨ウࡍ࡭ࡁㄢ㢟ࡶṧࡉࢀ࡚࠸ࡿ㸬୍᪉㸪㏆ᖺ᪤タ ᴫせ‴ᵓ㐀≀ࡢᶵ⬟ᙉ໬ࡀồࡵࡽࢀ࡚࠾ࡾ㸪▮ᯈᘧಀ⯪ᓊࢆ⪏㟈ᙉ໬ࡸ኱Ỉ῝໬ࡍࡿࡓࡵ࡟⤌ᮺࡢᶓ⤌ᮺࡢᶓ᢬ᢠࡢⓎ⏕࣓࢝ࢽࢬ࣒࠾ࡼࡧᮺ㛫ᨵⰋ࡟ࡼࡿ

᢬ᢠቑຍࡀㄢ㢟࡜࡞ࡗ࡚࠸ࡿ㸬ࡇࢀ࡟ᑐࡋ࡚㸪᳃ᕝࡽ㸦2011㸧ᶓ᢬ᢠቑຍ≉ᛶࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵ࡟㸪ᶍᆺᐇ㦂ࢆ⾜ࡗࡓ㸬ࡣ㸪᪤タࡢ᥍࠼ᕤࡼࡾࡉࡽ࡟㝣ഃ࡟᪂ࡓ࡞᥍࠼ᕤ࠾ࡼࡧࢱ

ᮏ◊✲࡛⾜ࡗࡓྛᐇ㦂ࡢ≉ᚩ࠾ࡼࡧ┠ⓗࡣ௨ୗࡢ㏻ࡾ࡛

࢖ᮦࢆቑタࡍࡿࡇ࡜࡛ᶓ᢬ᢠࢆቑຍࡉࡏࡿ᪉ἲࢆᥦ᱌ࡋ

࠶ࡿ㸬࡞࠾㸪ྛᐇ㦂ࡢᐇ㦂᪉ἲࡢヲ⣽࡟ࡘ࠸࡚ࡣ㸪 ࠿ࡓ㸬ᮏ᪉ἲ࡛ࡣ㸪᥍࠼ᕤࡢቑタ࡟ࡼࡾ༑ศ࡞ᶓ᢬ᢠቑຍࡀࡽ  ࡛㏙࡭ࡿ㸬ᮇᚅࡉࢀࡿ୍᪉㸪ቑタࡍࡿ᥍࠼ᕤࡀ࠿࡞ࡾ㝣ഃ࡟タ⨨ࡉࢀ㐲ᚰᶍᆺᐇ㦂࡛ࡣ㸪ᶍᆺࢧ࢖ࢬࡀᑠࡉࡃ㸪ᶍᆺᆅ┙ࡢసࡿࡇ࡜࠿ࡽ㸪㝣ഃ࡟༑ศ࡞᪋ᕤ✵㛫ࡀ☜ಖࡉࢀ࡚࠸ࡿࡇ࡜

〇ࡀẚ㍑ⓗᐜ࡛᫆࠶ࡿࡓࡵ㸪ᨵⰋ᮲௳ࢆኚ໬ࡉࡏࡓ」ᩘࢣ

ࡀᚲ㡲࡜࡞ࡿ㸬ࡲࡓ㸪ᮏ᪉ἲ࡛ࡣ㗰⟶ᮺࢆᡴタࡍࡿᚲせࡀ࣮ࢫࡢᐇ㦂ࢆ⾜ࡗࡓ㸬ࡇࡢ᫬㸪」ᩘࡢᐇ㦂࡛ྠ୍ࡢᶍᆺᮺ

࠶ࡿࡇ࡜࠿ࡽ㸪ᓊቨࢆ౪⏝ࡋ࡞ࡀࡽ᪋ᕤࢆ⾜࠺ሙྜ࡟ࡣ㸪ࢆඹ⏝ࡋࡓࡓࡵ࡟㸪ணࡵᡂᙧ࣭ᅛ໬ࡋࡓᨵⰋయᶍᆺࢆᶍᆺ

㗰⟶ᮺࡢᡴタ࡟క࠺᣺ືࡢᙳ㡪ࡸ᪋ᕤ᫬㛫ࡢไ⣙ࡀ኱ࡁᆅ┙స〇᫬࡟タ⨨ࡍࡿᚲせࡀ࠶ࡾ㸪ᨵⰋయᶍᆺ࡜ᶍᆺᮺࡀ

࠸ࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬᥋╔ࡉࢀ࡚࠸࡞࠸㸬ࡲࡓ㸪ᶍᆺᮺࡢኚᙧࡀ༑ศᙎᛶᇦ࡟࠶

⳥ụࡽ㸦1999㸧࠾ࡼࡧ Terauchi, K. et al.㸦2000㸧ࡣ㸪ᾮࡿ᫬Ⅼ࡛㍕Ⲵࢆ⤊஢ࡋࡓ㸬ࡉࡽ࡟㸪ᶍᆺࢧ࢖ࢬࡀᑠࡉ࠸ࡓ

≧໬ᑐ⟇࡜ࡋ࡚ࢧࣥࢻࢥࣥࣃࢡࢩࣙࣥࣃ࢖ࣝᕤἲ㸦௨ୗ㸪ࡵ㸪2 ḟඖ᮲௳ࡢᐇ㦂࡛࠶ࡿࡇ࡜ࡸ㸪ᮺయࡦࡎࡳࡢィഃⅬ

SCP ࡜࠸࠺㸧࡟ࡼࡾᆅ┙ᨵⰋࡉࢀࡓᨵⰋᆅ┙୰ࡢ⤌ᮺࡢᩘࡀᑡ࡞࠸࡜࠸࠺ไ⣙ࡀ࠶ࡿ㸬

࿘㎶ᆅ┙ࡢᆅ┙཯ຊ≉ᛶࢆㄪ࡭ࡓ㸬ᨵⰋ๓ᚋ࡟ྠ୍ᮺ࡟ᑐ

኱ᆺᶍᆺᐇ㦂࡛ࡣ㸪㐲ᚰᶍᆺᐇ㦂࡜ẚ㍑ࡋ࡚ᶍᆺࢧ࢖ࢬ

ࡋ࡚ᐇ᪋ࡉࢀࡓ 2 ᅇࡢ⌧ᆅỈᖹ㍕Ⲵᐇ㦂ࡼࡾ㸪ྛᮺࡢ㍈┤ࡀ኱ࡁࡃ㸪ᶍᆺᮺ࡟ᑐࡋ࡚ᐦ࡟ࡦࡎࡳࢤ࣮ࢪࢆ㈞௜࡛ࡁ㸪ゅ᪉ྥࡢⲴ㔜࡜ኚ఩ࡢ㛵ಀ࠿ࡽồࡵࡓᆅ┙཯ຊಀᩘࡢᨵ

ᮺయ࡟Ⓨ⏕ࡍࡿ㍈ࡦࡎࡳ㸪᭤ࡆࡦࡎࡳࢆヲ⣽࡟ィⰋ๓ᚋ࡟࠾ࡅࡿኚ໬ࢆࡳࡿ࡜㸪ᨵⰋ๓࡟ࡣᘬᢤࡁᮺࡢ๓㠃ࡇ࡜࠿ࡽ㸪⤌ᮺࡢᶓ᢬ᢠ࣓࢝ࢽࢬ࣒ࢆ᫂ࡽ࠿࡟ࡍࡿࡓࡵ࡟㸪ᆅ┙㸪ࡍ࡞ࢃࡕᮺ㛫ᆅ┙࠿ࡽཷࡅࡿᆅ┙཯ຊࡀ㸪ᢲ㎸ࡳᮺ༢ᮺ㸪༢ᩳᮺ࠾ࡼࡧ⤌ᮺ࡟ࡼࡿỈᖹ㍕Ⲵᐇ㦂ࢆᐇ᪋ࡋࡓ㸬ࡢ๓㠃ᆅ┙࠿ࡽཷࡅࡿᆅ┙཯ຊࡼࡾᑠࡉ࠸ࡇ࡜㸪ᨵⰋᚋ࡟ࡉࡽ࡟㸪⤌ᮺࢆᮺ㛫ᨵⰋࡋࡓࢣ࣮ࢫ࡛ࡣ㸪ᶍᆺᮺ࡜ᨵⰋయ

ࡣᘬᢤࡁᮺࡢ๓㠃ᆅ┙࠿ࡽཷࡅࡿᆅ┙཯ຊࡀቑຍࡋࡓࡇ

ᶍᆺࢆ᥋╔ࡉࡏࡓ≧ែ࡛㸪ᮺ㸫ᨵⰋయࡀ◚ቯ࡟⮳ࡿࡲ࡛㍕࡜ࢆሗ࿌ࡋ࡚࠸ࡿ㸬ࡓࡔࡋ㸪ᨵⰋᚋ 2 ᅇ┠ࡢỈᖹ㍕Ⲵᐇ㦂Ⲵࢆ⾜ࡗࡓ㸬኱ᆺᶍᆺᐇ㦂ࡣ㸪3 ḟඖ᮲௳࡛ࡢᐇ㦂࡛࠶ࡿ࡟㝿ࡋ࡚㸪⤌ᮺࡢᮺ㢌ࢆࢥࣥࢡ࣮ࣜࢺ࡛そ࠺ฎ⌮ࢆ⾜ࡗࡓࡓࡵ㸪2 ḟඖ᮲௳࡛ࡢ㐲ᚰᶍᆺᐇ㦂ࡼࡾࡶ⌧ᐇ࡟㏆࠸ᣲືࡓࡵ㸪ᨵⰋ๓ᚋ࡛ࡳࡽࢀࡓᆅ┙཯ຊࡢኚ໬≉ᛶ࡟ࡣᮺ㢌ࡢࢆㄪ࡭ࡿࡇ࡜ࡀ࡛ࡁࡿ㸬࡛ࡁࡿᣊ᮰᮲௳ࡢ㐪࠸࡟ࡼࡿᙳ㡪ࡶྵࡲࢀࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬X ⥺ CT ᶍᆺᐇ㦂࡛ࡣ㸪㍕Ⲵ୰࡟㠀◚ቯ࡛ᮺࡸᨵⰋయ࿘

ࡇࡢࡼ࠺࡟ SCP ࡟ࡼࡗ࡚ᮺ࿘㎶ࡢᆅ┙཯ຊࡀቑຍࡋ㸪ᶓ㎶ࡢᆅ┙ኚᙧࢆほᐹࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬ᮏ◊✲࡛ࡣ㸪X ⥺᢬ᢠࡢቑຍࢆᮇᚅ࡛ࡁࡿྍ⬟ᛶࡶ࠶ࡿࡀ㸪⤌ᮺࡢ┤㏆ࡸᮺ

CT ⏬ീࡢゎᯒ࡟ࡼࡗ࡚ᆅ┙ኚᙧ㡿ᇦࢆྍど໬ࡋ㸪Ỉᖹຊ-8-ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶࢆཷࡅࡿᮺࡢ࿘㎶ᆅ┙ࡢኚᙧࢆほᐹࡍࡿ࡜࡜ࡶ࡟㸪ᮺ㛫ᨵ

⾲-3.1 㐲ᚰᶍᆺᐇ㦂᮲௳ࡢ୍ぴⰋࡢ᭷↓࡟ࡼࡿᆅ┙ኚᙧ࣓࢝ࢽࢬ࣒ࡢ㐪࠸ࢆ᫂ࡽ࠿࡟ࡋ

ᨵⰋయ

ࡓ㸬

ࢣ࣮ࢫ

㐲ᚰᶍᆺᐇ㦂࡛ࡣᮺࡢ᰿ධࢀࡀ᭤ࡆ࣮࣓ࣔࣥࢺ➨୍ࢮ␒ྕ㓄⨨ࣟⅬ῝ࡉࡢ 1.5 ಸ௨ୖ࡜࡞ࡾ㸪㛗ᮺ࡜ࡋ࡚ᶓ᢬ᢠࢆⓎ᥹ࡍ῝ࡉ㸦mm㸧ͤ1㸦ᐇ≀᥮⟬㸪m㸧ࡿࡼ࠺࡟ᶍᆺᮺࡢ௙ᵝࢆỴࡵࡓ㸦ஂಖ㸪1964㸧㸬௚ࡢᶍᆺ

C-01

㸫

㸫

ᐇ㦂࡛ࡣ㸪㐲ᚰᶍᆺᐇ㦂࡛ᚓࡽࢀࡓ⤖ᯝࢆᇶ࡟㸪㢮ఝࡢኚ

C-02

ᮺ㛫

180㸦9㸧

ᙧ࣮ࣔࢻࢆ♧ࡍࡼ࠺࡟ᶍᆺᮺࡢ௙ᵝࢆỴࡵࡓ㸬୍⯡ⓗ࡟ᐇ

C-03

๓㠃㸩ᮺ㛫

180㸦9㸧

ᵓ㐀≀࡛ࡣ㸪ᅗ ࡟♧ࡉࢀࡿࡼ࠺࡟ᢲ㎸ࡳᮺ࡜ᘬᢤࡁ

C-04

๓㠃

180㸦9㸧

ᮺࡢㅖඖࡀ␗࡞ࡿሙྜࡀ࠶ࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ᮏ◊✲࡛ࡣ

C-05

ᮺ㛫

90㸦4.5㸧≉ᐃࡢ⌧ሙࢆᑐ㇟࡜ࡋ࡚࠸࡞࠸ࡇ࡜㸪⤌ᮺࡢᶓ᢬ᢠ≉ᛶ࡟

C-06

ᮺ㛫

45ͤ2㸦2.25㸧

C-07

ᮺ㛫

90㸦4.5㸧

C-08ᮺ㛫

45ͤ2㸦2.25㸧

㛵ࡍࡿᇶ♏ⓗ㈨ᩱࢆᚓࡿࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚࠸ࡿࡇ࡜࠿ࡽ㸪ྛ✀ᶍᆺᐇ㦂࡟࠾ࡅࡿᶍᆺ⤌ᮺ࡟ࡣᢲ㎸ࡳᮺ࡜ᘬᢤࡁᮺ
ࡢ௙ᵝ㸦ᮺ㛗㸪ᮺ᩿㠃㸧ࡀ➼ࡋ࠸ࡶࡢࢆ⏝࠸ࡓ㸬ࡲࡓ㸪඲ᐇ㦂ࢣ࣮ࢫ࡛⤌ᮺࡢ஺ゅ㸦ᢲ㎸ࡳᮺ࡜ᘬᢤࡁᮺࡢ㛫ࡢゅᗘ㸧

C-09

ࢆ 30 ᗘ࡜ࡋࡓ㸬

ͤ1

ᮺ㛫㸩
ᮺ㛫✺ฟ㒊

ᮦᩱ㸪
ᙉᗘ㸦MPa㸧㸪๛ᛶ㸦MPa㸧㸫ͤ2

45 㸦2.25㸧ࢭ ࣓ ࣥࢺ ᅛ໬ฎ⌮ᅵ㸪
⣙ 1.2㸪
⣙ 281

ሷࣅ㸪
N/A㸪
2500 ௨ୖͤ3

ᐇᑍ㸬ͤ2 ↓ᨵⰋࢣ࣮ࢫ㸦C-01㸧࡛ࡢᮺࡢ᭱኱᭤ࡆ࣮࣓ࣔࣥࢺ῝ࡉ࡟࡯ࡰ➼ࡋ࠸㸬 ͤ3 ᮦᩱ࣓࣮࣮࢝HP㸦ሷࣅᕤ 㐲ᚰᶍᆺᐇ㦂ᴗ࣭⎔ቃ༠఍㸪2017㸧ࡼࡾᘬ⏝㸬  ᐇ㦂᮲௳ ᅗ ࠾ࡼࡧ⾲ ࡣ㸪㐲ᚰᶍᆺᐇ㦂࡛ᐇ᪋ࡋࡓᐇ㦂࡛ࡢᨵⰋయࡢ㓄⨨࠾ࡼࡧᐇ㦂᮲௳ࡢ୍ぴࢆ♧ࡋ࡚࠸ࡿ㸬㐲  㐲ᚰ㍕Ⲵᐇ㦂⿦⨨ᚰᶍᆺᐇ㦂࡛ࡣ㸪ᨵⰋ᮲௳ࡢ␗࡞ࡿィ 9 ࢣ࣮ࢫࡢᐇ㦂ࢆᐇ 㐲ᚰᶍᆺᐇ㦂࡟ࡣ㸪 ‴✵ ᢏ⾡◊✲ᡤࡀᡤ᭷ࡍࡿ㐲ᚰ᪋ࡋࡓ㸬ᨵⰋయ㓄⨨ࡢ␗࡞ࡿ C-02㹼C-04 ࡛ࡣ㸪⤌ᮺࡢ๓㍕Ⲵᐇ㦂⿦⨨㸦ᅗ ཧ↷㸧ࢆ⏝࠸ࡓ㸬ᮏ⿦⨨ࡢ୺࡞௙㠃ᆅ┙ࡢࡳ㸪ᮺ㛫ᆅ┙ࡢࡳ㸪୧᪉ࢆᨵⰋࡍࡿ 3 ㏻ࡾࡢ᪉ἲ

ᵝࡣ㸪⾲ ࡢ㏻ࡾ࡛࠶ࡿ㸬㐲ᚰᶍᆺᐇ㦂⿦⨨ࡣ㸪ᶍᆺࢆ᳨ウࡋࡓ㸬ḟ࡟㸪C-05㸪C-06 ࡛ࡣᮺ㛫ᨵⰋ࡟࠾ࡅࡿᨵ

ᐇ㦂ࢆᑐ㇟࡜ࡍࡿᵓ㐀≀ࡢ⦰ᑻ㸦1/n㸧ࡢ㏫ᩘ࡟┦ᙜࡍࡿⰋ῝ࡉ㸪C-07㸪C-08 ࡛ࡣᨵⰋయࡢᙉᗘ࣭๛ᛶࡢ␗࡞ࡿᐇ

ຍ㏿ᗘሙ㸦ng ሙ㸧࡛ᐇ᪋ࡍࡿࡇ࡜࡟ࡼࡾ㸪ᐇ≀࡜ᶍᆺࡢ㦂ࢆᐇ᪋ࡋࡓ㸬C-09 ࡛ࡣ㸪ᮺ㛫ᆅ┙࡟ຍ࠼࡚ᮺ㛫✺ฟ㒊ᗄఱᏛⓗ࡞┦ఝ๎࠿ࡽ㸪እຊ࡜⮬㔜࡟ࡼࡿᛂຊࢆᶍᆺᆅ┙㸦ᅗ ཧ↷㸧ࢆᨵⰋࡋࡓሙྜࡢᙳ㡪ࢆㄪ࡭ࡓ㸬C-02㹼ෆ࡟෌⌧ࡍࡿࡶࡢ࡛࠶ࡿ㸬⾲ ࡣ㸪㐲ᚰᶍᆺᐇ㦂ࡢ┦

C-06 ࡢᨵⰋయᶍᆺ࡟ࡣ㸪ࢭ࣓ࣥࢺᅛ໬ฎ⌮ᅵࢆ⏝࠸ࡓ㸬ఝ๎ࢆ♧ࡍ㸬ᮏ◊✲࡛⏝࠸ࡓ㐲ᚰ㍕Ⲵᐇ㦂⿦⨨ࡢヲ⣽࡞ཎࡇࡢ࡜ࡁ㸪⌧ሙ࡟࠾ࡅࡿ῝ᒙΰྜฎ⌮࡟ࡼࡿᆅ┙ᨵⰋࡢ୍⌮࣭௙ᵝ➼ࡣ㸪໭ワ㸦1995㸧ࢆཧ↷ࡉࢀࡓ࠸㸬⯡ⓗ࡞୍㍈ᅽ⦰ᙉࡉ 1MPa ⛬ᗘ㸦ࢭ࣓ࣥࢺ༠఍㸪2012㸧ࢆ┠ᶆᙉᗘ࡜ࡋ࡚㸪㓄ྜ࠾ࡼࡧ㣴⏕᮲௳ࢆタᐃࡋࡓ㸬C-07
㹼C-09 ࡟ࡣ㸪ࢭ࣓ࣥࢺᅛ໬ฎ⌮ᅵ࡜ẚ㍑ࡋ࡚๛ᛶࡢ༑ศ㧗࠸ሷࣅ〇㸦ሷࣅᕤᴗ࣭⎔ቃ༠఍㸪2017㸧ࡢᨵⰋయᶍᆺࢆ
⏝࠸ࡓ㸬ྛᨵⰋయࡢᙉᗘ࣭๛ᛶࡣ㸪⾲ ࡟♧ࡍ࡜࠾ࡾ
࡛࠶ࡿ㸬

㍕ⲴⅬ

㍕Ⲵ᪉ྥ
ᮺ㛫ᆅ┙
๓㠃ᆅ┙

ᮺ㛫✺ฟ㒊

ᅗ 㐲ᚰ㍕Ⲵᐇ㦂⿦⨨ᅗ ᨵⰋయࡢ㓄⨨ࡢᴫせᅗ-9-ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿⾲ 㐲ᚰ㍕Ⲵᐇ㦂⿦⨨ࡢ௙ᵝ᪥௨ୖ࡜ࡋࡓ㸬୍㍈ᅽ⦰ヨ㦂ࡢ⤖ᯝ࠿ࡽ㸪ࢭ࣓ࣥࢺᅛ໬య㡯┠್ࡢ୍㍈ᅽ⦰ᙉᗘࡣ⣙ 1.2MPa㸪E50 ࡣ⣙ 281MPa ࡛࠶ࡿ㸬C-07

᭱኱㐲ᚰຍ㏿ᗘ㸦G㸧

113

㹼C-09 ࡛ࡣ㸪ᨵⰋయ࡟ሷࣅᶍᆺࢆ⏝࠸ࡓ㸦ᅗE ཧ↷㸧㸬ᅇ㌿⭎┤ᚄ㸦mm㸧

9650

C-09 ࡛ࡣ㸪ሷࣅᶍᆺࡢୖ㒊ࡢᮺ㛫✺ฟ㒊㸦ᅗ ཧ↷㸧᭷ຠᅇ㌿༙ᚄ㸦mm㸧

3400~3800

ࢆ㸪࢚࣏࢟ࢩ⣔᥋╔๣ࢆὶࡋ㎸ࢇ࡛ᅛ໬ࡋࡓ㸬ሷࣅᶍᆺࡢ

᭱኱୰ᚰ㍈ᅇ㌿ᩘ㸦rpm㸧

163

ࣖࣥࢢ⋡ࡣ࠾ࡼࡑ 2500㹼4100MPa㸦ሷࣅᕤᴗ࣭⎔ቃ༠఍㸪ࢫ࢖ࣥࢢࣉࣛࢵࢺࣇ࢛࣮࣒ࡢ
኱ࡁࡉ㸦mm㸧᭱኱✚㍕㉁㔞㸦kg㸧

2017㸧࡛㸪ࢭ࣓ࣥࢺᅛ໬య࡟ẚ࡭࡚༑ศ㧗࠸๛ᛶࢆࡶࡘ࡜
1600×1600⪃࠼ࡽࢀࡿ㸬స〇ࡋࡓᶍᆺᆅ┙ࢆ㐲ᚰ㍕Ⲵ⿦⨨࡟ᦚ㍕ࡋࡓᚋ㸪50G ࡢ

2760㐲ᚰሙ࡛Ỉᖹ㍕Ⲵᐇ㦂ࢆ⾜ࡗࡓ㸬㍕Ⲵ㏿ᗘࡣ㸪ᐇᑍ࡛⣙

4mm/min ࡛࠶ࡿ㸬㍕Ⲵࡣ㸪⤌ᮺࡢ᭤ࡆࡦࡎࡳࡀ 700Pm ࡟⾲ 㐲ᚰᶍᆺᐇ㦂ࡢ┦ఝ๎
㡯┠

ᶍᆺᐇ≀

㐩ࡍࡿ࠿㸪㍕ⲴⲴ㔜ࡀ 2.45kN ࡟㐩ࡍࡿࡲ࡛⾜ࡗࡓ㸬㍕Ⲵ

㛗ࡉ࣭ኚ఩

1/n

୰ࡣ㸪ᅗ ࡟♧ࡉࢀࡿྛ✀ィ㉁㔞࣭ᛂຊ࣭ࡦࡎࡳ

1ࡢỈᖹⲴ㔜࠾ࡼࡧỈᖹኚ఩㸪ᆅ┙㖄┤ኚ఩㸪ᶍᆺ⤌ᮺ࡟సຍ㏿ᗘn⏝ࡍࡿࡦࡎࡳࢆィຊ࣭᫬㛫㸦ᅽᐦ࣭ᾐ㏱᫬㸧

1/n2ჾࢆ⏝࠸࡚㸪㍕ⲴⅬ࡛

ࡋࡓ㸬
㍕Ⲵ⿦⨨
Ỉᖹ㍕Ⲵ᪉ྥ

ᕳ㎸ᘧኚ఩ィ
䝺䞊䝄䞊ኚ఩ィ࣮ࣞࢨ࣮ኚ఩ィᕳ㎸ᘧኚ఩ィ
䠨䠲䠠䠰
LVDT  ᐇ㦂ᡭ㡰 ᅗ ࡟ᶍᆺᆅ┙ࡢ౛㸦⾲ ୰㸪C-03 ࡟ヱᙜ㸧ࢆ♧

㍕Ⲵ⿦⨨

500

180

ࡍ㸬ᐇ㦂࡟⏝࠸ࡓᅵᵴࡣᑍἲࡀ㧗ࡉ 512mm㸪ᖜ 750mm㸪

60

100

50

ዟ⾜ࡁ 200mm ࡢࢫࢸࣥࣞࢫ〇ࡢࡶࡢ࡛࠶ࡿ㸬ᅗ ࡣ㸪

60

180

㐲ᚰᶍᆺᐇ㦂࡟⏝࠸ࡓᶍᆺ⤌ᮺ࡜ࡦࡎࡳࢤ࣮ࢪࡢ㈞௜఩

ᨵⰋయ

ᨵⰋయ

ᮺ㛫
✺ฟ㒊

ࡁᮺ࡛ᵓᡂࡉࢀ࡚࠾ࡾ㸪୧ᮺ࡟ࡦࡎࡳࢤ࣮ࢪࡀ⾲⿬୧㠃࡟

๓㠃ᨵⰋ㒊

30

ᨵⰋ
῝䛥

5

380

2mm㸪ዟ⾜ 197mm㸪㛗ࡉ 439mm ࡛࠶ࡿ㸬ᢲ㎸ࡳᮺ࡜ᘬᢤ

410

5⨨ࢆ♧ࡋ࡚࠸ࡿ㸬ᶍᆺ⤌ᮺࡣࢫࢸࣥࣞࢫ〇࡛㸪ᑍἲࡣཌࡉ
ᮺ㛫ᨵⰋ㒊

ᢲ㎸䜏ᮺ

ᘬᢤ䛝ᮺ

30

῝ᗘ᪉ྥ࡟ 12 ᯛࡎࡘ㈞௜ࡉࢀ㸪12 ῝ᗘࡢ᭤ࡆ࣮࣓ࣔࣥࢺ
ࢆィ࡛ࡁࡿ㸬ᅗ ࡛♧ࡉࢀࡿࡼ࠺࡟㸪ࡦࡎࡳࢤ࣮ࢪ

࡟ࢥ࣮ࢸ࢕ࣥࢢࢆࡋ㸪ࡑࡢᚋ᭤ࡆヨ㦂࡟ࡼࡿᶍᆺᮺࡢ᭤ࡆ

750

༢఩㸸mm

๛ᛶࡢ᳨ᐃࢆ⾜ࡗࡓ㸬㐲ᚰᶍᆺᐇ㦂࡛ࡣᅵᵴ࡜ᶍᆺᮺࡢዟ

㸸ᅵᅽィᅗ ᶍᆺᆅ┙࡜࿘㎶⿦⨨ࡢᴫせᅗ㸦C-03㸧

⾜᪉ྥࡢᖜࡀ࡯ࡰ➼ࡋ࠸ 2 ḟඖⓗ࡞᳨ウࢆ⾜ࡗ࡚࠸ࡿ㸬ᶍᆺᆅ┙ࡢస〇࡛ࡣ㸪ࡣࡌࡵ࡟ᅵᵴࢆᶓಽࡋ࡟ࡋ㸪ᡤᐃ

197

ࡢ఩⨨࡟ᶍᆺᮺ࠾ࡼࡧணࡵస〇ࡋ࡚࠾࠸ࡓᨵⰋయᶍᆺࢆ

98.5

タ⨨ࡍࡿ㸬ࡑࡢᚋ㸪ᆅ┙ࡢ㧗ࡉ+20mm ⛬ᗘ࡟࡞ࡿࡼ࠺࡟

M3×6ࢧࣛࢿࢪ
㍕ⲴⅬ௙ษࡾᯈࢆタ⨨ࡍࡿ㸬ᅗ ࡣ㸪ᶓಽࡋ࡟ࡉࢀࡓᅵᵴෆ

ᆅ⾲㠃࡟ᶍᆺᮺ㸪ᨵⰋయᶍᆺ࠾ࡼࡧ௙ษࡾᯈ࡟タ⨨ࡋࡓᵝᏊࢆ♧ࡦࡎࡳࢤ࣮ࢪ

ࡋ࡚࠸ࡿ㸬ᅵᵴࢆᶓಽࡋ࡟ࡋࡓࡲࡲ㸪┦㤿◡◁ 5 ྕࢥ࣮ࢸ࢕ࣥࢢ

㸦Us=2650kg/m , emax=1.115, emin=0.710㸧ࢆ⏝࠸࡚㸪┦ᑐᐦ

380

438.813

ᗘ 80%ࢆ┠ᶆ࡜ࡋ࡚㸪✵୰ⴠୗἲ࡟ࡼࡾᶍᆺᆅ┙ࢆస〇ࡋࡓ㸬C-02㹼C-06 ࡛ࡣ㸪ᨵⰋయ࡟ࢭ࣓ࣥࢺᅛ໬యࢆ⏝࠸ࡓ㸦ᅗD ཧ↷㸧㸬ࢭ࣓ࣥࢺᅛ໬ฎ⌮ᅵࡢヨᩱ࡟ࡣ㸪⿬ࡈࡋࡋ75°

ࡓᕝᓮ⢓ᅵࢆ⏝࠸㸪ࢭ࣓ࣥࢺ࡟ࡣ᪩ᙉࢭ࣓ࣥࢺࢆ⏝࠸ࡓ㸬ࢭ ࣓ ࣥ ࢺ 㓄 ྜ 㔞 ࡣ ᕝ ᓮ ⢓ ᅵ 㸦 Us=2692kg/m3, wL=64.8%,

༢఩:mmᅗ 㐲ᚰᶍᆺᐇ㦂࡟⏝࠸ࡓᶍᆺ⤌ᮺ࡜ࡦࡎࡳࢤ࣮

wp=25.2%㸧ࡢ஝⇱㔜㔞࡟ᑐࡋ࡚ 40%࡜ࡋ㸪㣴⏕᪥ᩘࡣ 14

ࢪࡢ㈞௜఩⨨- 10 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ⾲ ኱ᆺᶍᆺᐇ㦂᮲௳ࡢ୍ぴ

ᶍᆺᅵᵴ

௙ษ䜚ᯈ

ᨵⰋయᶍᆺ

ࢣ࣮ࢫ␒ྕ

ᮺᙧᘧ

ᨵⰋ

G-01

༢ᮺ

㸫

G-02

༢ᩳᮺ㸦ᢲ㎸ࡳ㸪 push-in㸧 㸫

G-03༢ᩳᮺ㸦ᘬᢤࡁ㸪pull-out㸧 㸫

G-04

⤌ᮺ

㸫

G-05

⤌ᮺ

ᮺ㛫ᨵⰋͤ

ͤ

⤌ᮺᶍᆺ

ᨵⰋ῝ࡉࡣ㸪250mm㸬ࡇࢀࡣ↓ᨵⰋࢣ࣮ࢫ㸦G-04㸧

࡛ࡢᮺࡢ᭱኱᭤ࡆ࣮࣓ࣔࣥࢺ῝ࡉ࡟࡯ࡰ➼ࡋ࠸㸬 ኱ᆺᶍᆺᐇ㦂  ᐇ㦂᮲௳ᅗ ᶍᆺタ⨨ࡢ≧ἣ㸦ᅵᵴᶓಽࡋࡢ≧ែ㸧 ኱ᆺᶍᆺᐇ㦂࡛ࡣ㸪⤌ᮺࡢᶓ᢬ᢠ≉ᛶ࡜ᮺ㛫ᆅ┙ࡢࢭ࣓ࣥࢺᅛ໬ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑຍ࣓࢝ࢽࢬ࣒ࡢゎ᫂ࢆ┠ⓗ࡜ࡋ࡚㸪5 ࢣ࣮ࢫࡢᐇ㦂ࢆᐇ᪋ࡋࡓ㸬ᅗ ࠾ࡼࡧ⾲ࡣ㸪ᮺᙧᘧ࡜㍕Ⲵ᪉ྥࡢ㛵ಀ࠾ࡼࡧᐇ㦂᮲௳ࡢ୍ぴࢆ♧ࡋ࡚࠸ࡿ㸬G-01㹼G-03 ࡣ࠸ࡎࢀࡶ༢ᮺࢆᑐ㇟࡜ࡋࡓᐇ㦂࡛
࠶ࡿࡀ㸪G-01 ࡣ㖄┤࡟タ⨨ࡉࢀࡓ༢ᮺ㸪G-02 ࠾ࡼࡧ G-03
ࡣᢲ㎸ࡳ㸪ᘬᢤࡁ᪉ྥ࡟Ỉᖹ㍕Ⲵࡉࢀࡿ༢ᩳᮺࡢᐇ㦂ࢣ࣮ࢫ࡛࠶ࡿ㸬༢ᩳᮺࡢഴᩳゅࡣ㖄┤࡟ᑐࡋ 15 ᗘ࡛࠶ࡿ㸬G-04㸪
G-05 ࡛ࡣ↓ᨵⰋ࠾ࡼࡧᮺ㛫ᨵⰋࡋࡓ⤌ᮺ࡟ࡼࡿᐇ㦂ࢆ⾜ࡗࡓ㸬a) ࢭ࣓ࣥࢺᅛ໬య㸦C-06㸧

b) ሷࣅ㸦C-08㸧  ᐇ㦂ᡭ㡰ᅗ ᨵⰋయᶍᆺࡢ౛

⏝࠸ࡓᶍᆺᅵᵴࡢᑍἲࡣ㸪ᖜ 4000mmዟ⾜ 2000mm
㧗ࡉ 1500mm ࡛࠶ࡿ㸬ᅗ ࡣ㸪኱ᆺᶍᆺᐇ㦂࡟⏝࠸ࡓᶍᆺᮺ࡜ࡦࡎࡳࢤ࣮ࢪࡢ㈞௜఩⨨ࢆ♧ࡋ࡚࠸ࡿ㸬ᶍᆺᮺ࡟ࡣ 40mm20mm ࡢ▴ᙧ᩿㠃㸪ᯈཌ 2mm㸪㛗ࡉ 1350mm ࡢ࢔࣑ࣝ〇ゅࣃ࢖ࣉࢆ౑⏝ࡋࡓ㸬ᶍᆺᮺࡢ⾲⿬୧㠃࡟ 75mm
㛫㝸࡛ 18 ᯛࡎࡘ㸪ᮺ 1 ᮏ࡟௜ࡁ 36 ᯛࡢࡦࡎࡳࢤ࣮ࢪࢆ㈞௜ࡋ࡚㸪18 ῝ᗘࡢࡦࡎࡳࢆィ༢ᮺࡋࡓ㸬ࡦࡎࡳࢤ࣮ࢪ࡟ࢥ

࣮ࢸ࢕ࣥࢢࢆࡋ㸪ࡑࡢᚋ᭤ࡆヨ㦂࡟ࡼࡿᶍᆺᮺࡢ᭤ࡆ๛ᛶ

༢ᩳᮺ䠄ᢲ㎸䜏䠅 ༢ᩳᮺ䠄ᘬᢤ䛝䠅ࡢ᳨ᐃࢆ⾜ࡗࡓ㸬㍕ⲴⅬᶍᆺᆅ┙ࡢస〇࡛ࡣ㸪ᅵᵴෆ࡟ᶍᆺᮺࢆタ⨨ࡋࡓᚋ㸪┠㍕Ⲵ᪉ྥ

ᶆࡢ┦ᑐᐦᗘࢆ 80%࡜ࡋ࡚✵୰ⴠୗἲ࡟ࡼࡾ┦㤿⌛◁ 4ᮺ㛫ᆅ┙ྕ㸦Us=2644kg/m3, emax=0.970, emin=0.634㸧ࢆሁ✚ࡉࡏࡓ㸬ᆅ┙ࡢస〇୰㸪ᆅ┙㧗ࡀᨵⰋయୗ➃ࡢ῝ࡉࡲ࡛㐩ࡋࡓ࡜ࡇ⤌ᮺࢁ࡛ᆅ┙స〇ࢆ୰᩿ࡋ࡚㸪ᨵⰋయࡢస〇సᴗࢆ⾜ࡗࡓ㸬ᨵ⤌ᮺ䠄ᮺ㛫ᨵⰋ䠅Ⰻయࡢస〇࡛ࡣ㸪ᮺ㛫ࡢࢫ࣮࣌ࢫࢆそ࠺ᆺᯟࢆタ⨨ࡋࡓᚋ㸪ᅗ ᮺᙧᘧ࡜㍕Ⲵ᪉ྥᆺᯟෆ࡟ࢭ࣓ࣥࢺ࣮࣌ࢫࢺࢆὶࡋ㎸ࢇࡔ㸬⩣᪥㸪ࢭ࣓ࣥࢺ࣮࣌ࢫࢺࡀ⮬❧ࡍࡿ⛬ᗘ࡟ᅛ໬ࡋ࡚࠸ࡿࡇ࡜ࢆ☜ㄆࡋ࡚㸪ᆺᯟࢆྲྀࡾእࡋࡓ㸬ࡑࡢᚋ㸪ᆅ┙స〇ࢆ෌㛤ࡋ㸪᭱⤊ᆅ┙㧗ࡉࡲ࡛ᆅ┙ࢆస〇ࡋࡓ㸬ᅗ ࡣ㸪ᆺᯟࢆྲྀࡾእࡋࡓ
┤ᚋࡢᵝᏊࢆ♧ࡋ࡚࠸ࡿ㸬- 11 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ᨵⰋయࡣᬑ㏻࣏ࣝࢺࣛࣥࢻࢭ࣓ࣥࢺ㸦C㸧࣭Ỉ㸦W㸧࣭┦㤿⌛◁ 4 ྕ㸦S㸧࣭࢝࢜ࣜࣥ⢓ᅵ㸦K㸧ࢆΰྜࡋ࡚స〇ࡋࡓ㸬ΰྜẚࡣ㸪C㸸W㸸S㸸K㸻1.0㸸2.1㸸4.0㸸1.5 ࡛࠶ࡿ㸬㣴⏕ᮇ㛫ࡣ㸪ࢭ࣓ࣥࢺ࣮࣌ࢫࢺࡢస〇࠿ࡽ㍕Ⲵ᪥ࡲ࡛ࡢᮇ㛫࡟ྜࢃࡏ࡚ 7 ᪥㛫࡜ࡋࡓ㸬㍕Ⲵ᪥࡟࠾ࡅࡿᨵⰋయࡢ୍㍈ᅽ⦰ヨ㦂ࡣ⣙ 1.7MPa ࡛࠶ࡗࡓ㸬୍㍈ᅽ⦰ヨ㦂⏝ࡢ౪ヨయ࡟ࡣ㸪ᨵⰋయ࡜ྠࡌࣟࢵࢺ࡛స〇ࡉࢀ㸪ᐇ㝿ࡢᶍᆺᆅ┙୰࡛
7 ᪥㣴⏕ࡉࢀࡓࢭ࣓ࣥࢺᅛ໬యࢆ⏝࠸ࡓ㸬ᶍᆺᮺ࡜ᨵⰋయ
ࡣ௜╔ࡋ࡚࠾ࡾ㸪㧗ᅽᄇᑕᨩᢾᕤἲ➼࡟ࡼࡿᮺ㛫ᨵⰋࡢ⌧ᆅ฼⏝ἲࢆ᝿ᐃࡍࡿ࡜㸪ࡼࡾ⌧ᐇⓗ࡞ᮺ㸫ᨵⰋయࡢ⏺㠃ࡢᅗ ᶍᆺᆅ┙࡜࿘㎶⿦⨨ࡢᵝᏊ㸦G-04㸧᮲௳ࢆ෌⌧࡛ࡁ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬኱ᆺᶍᆺᐇ㦂࡜㐲ᚰ⾲ X ⥺ CT ᶍᆺᐇ㦂᮲௳ࡢ୍ぴᶍᆺᐇ㦂࡟⏝࠸ࡓࢭ࣓ࣥࢺᅛ໬యࡢᮦᩱ࠾ࡼࡧ୍㍈ᅽ⦰ᙉᗘ࡟㐪࠸ࡀࡳࡽࢀࡿࡀ㸪ᨵⰋయࡢᮦᩱࡸᙉᗘࡢᙳ㡪ࡣ㸪

ࢣ࣮ࢫ␒ྕ

ᮺᙧᘧ

ᨵⰋ

㐲ᚰᶍᆺᐇ㦂࡟ࡼࡿ C-05㹼C-08㸦⾲ ཧ↷㸧ࡢ⤖ᯝࢆ

X-01

༢ᮺ

㸫

ࡶ࡜࡟ᚋ㏙ࡉࢀࡿ㸬X-02༢ᩳᮺ㸦ᢲ㎸ࡳ㸪Push-in㸧 㸫ᅗ ࡣ㸪㍕Ⲵ๓ࡢᶍᆺᆅ┙ࡢᵝᏊࢆ♧ࡋ࡚࠸ࡿ㸬ỈX-03༢ᩳᮺ㸦ᘬᢤࡁ㸪Pull-out㸧 㸫ᖹ㍕Ⲵᐇ㦂ࡣ㸪㍕Ⲵ㏿ᗘ 1mm/min ࡛㸪࣡࢖ࣖࢆ௓ࡋ࡚ᮺ

X-04

⤌ᮺ

㸫

㢌㒊ࢆ㍕Ⲵ⿦⨨㸦ࢫࢡ࣮ࣜࣗࢪࣕࢵ࢟㸧࡛ᘬࡗᙇࡾ㸪ᶍᆺ

X-05

⤌ᮺ

ᮺ㛫ᨵⰋͤ

ᮺࡢࡦࡎࡳࡀ 2500Pm㹼3000Pm ࡟㐩ࡍࡿࡲ࡛⾜ࡗࡓ㸬㍕ͤⲴࢆ೵Ṇࡋ࡚ 15 ศ㛫ኚ఩ࢆಖᣢࡋࡓᚋ㸪㍕Ⲵ㏿ᗘ࡜ྠࡌࡢᮺࡢࡓࢃࡳⓎ⏕῝ࡉ࡟࡯ࡰ➼ࡋ࠸㸬㏿ᗘ࡛㝖Ⲵࡋࡓ㸬㍕Ⲵ᫬ࡢィᨵⰋ῝ࡉࡣ㸪70mm㸬ࡇࢀࡣ↓ᨵⰋࢣ࣮ࢫ㸦X-04㸧࡛㡯┠ࡣ㸪㍕ⲴⅬ࡟࠾ࡅࡿỈᖹⲴ㔜㸪Ỉᖹኚ఩࠾ࡼࡧᶍᆺᮺ࡟Ⓨ⏕ࡍࡿࡦࡎࡳ࡛࠶ࡿ㸬 ;⥺&7ᶍᆺᐇ㦂ᮺᆅ୰㒊䠖1300mm䜂䛪䜏䝀䞊䝆䠖18ᯛ@75mm  ᐇ㦂᮲௳ ⾲ ࡣ㸪X ⥺ CT ᶍᆺᐇ㦂ࡢ᮲௳ࡢ୍ぴࢆ♧ࡋ࡚࠸ࡿ㸬

20mm

኱ᆺᶍᆺᐇ㦂࡜ྠࡌࡃ㸪⤌ᮺࡢᶓ᢬ᢠ≉ᛶ࡜ᮺ㛫ᆅ┙ࡢࢭ

40mmᮺ㢌㒊ရ䛸䛾
᥋ྜ㒊䠄50mm䠅

࣓ࣥࢺᅛ໬ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑຍ࣓࢝ࢽࢬ࣒ࡢゎ᫂ࢆ┠ⓗ࡜ࡋ࡚㸪5 ࢣ࣮ࢫࡢᐇ㦂ࢆᐇ᪋ࡋࡓ㸬࡞࠾㸪ྛᐇ㦂ࢣ࣮䜂䛪䜏䝀䞊䝆

ࢫ࡟࠾ࡅࡿᮺᙧᘧ࡜㍕Ⲵ᪉ྥࡢ㛵ಀࡣ㸪ᅗ ࡟♧ࡉࢀᅗ ኱ᆺᶍᆺᐇ㦂࡟⏝࠸ࡓᶍᆺ⤌ᮺ࡜ࡦࡎࡳࢤ࣮

ࡿ㏻ࡾ࡛࠶ࡿ㸬༢ᩳᮺࡢഴᩳゅࡣ 15 ᗘ㸪⤌ᮺࡢ஺ゅࡣ 30

ࢪࡢ㈞௜఩⨨ᗘ࡛࠶ࡿ㸬  ; ⥺ &7 ⿦⨨
X ⥺ CT ᶍᆺᐇ㦂࡛ࡣ㸪 ‴✵ᢏ⾡◊✲ᡤࡀᡤ᭷ࡍࡿ

X ⥺ CT ⿦⨨㸦ᅗ ཧ↷㸧ࢆ⏝࠸ࡓ㸬⾲ ࡣ㸪X ⥺㍕ⲴⅬ㧗䛥

CT ⿦⨨ࡢ୺࡞௙ᵝࢆ♧ࡋ࡚࠸ࡿ㸬ࢫ࣏ࢵࢺࢧ࢖ࢬࡣ

᭱⤊ᆅ┙㧗䛥

0.004mm ࡛࠶ࡾ㸪࠸ࢃࡺࡿ࣐࢖ࢡࣟࣇ࢛࣮࢝ࢫᆺࡢ X ⥺CT ⿦⨨࡟ศ㢮ࡉࢀ㸪ᚓࡽࢀࡿ X ⥺ CT ⏬ീࡢ᭱ᑠ✵㛫ศゎ⬟ࡣ 10Pm ࢆୗᅇࡿ⛬ᗘ࡛࠶ࡿ㸬ᮏ⿦⨨ࡢヲ⣽࡞ཎ⌮㸪௙ᵝ➼ࡣ㸪ᯇᮧࡽ㸦2015㸧ࢆཧ↷ࡉࢀࡓ࠸㸬ᨵⰋ῝䛥ᅗ ᨵⰋయస〇ࡢᵝᏊ- 12 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ⾲ X ⥺ CT ᧜ᙳ᮲௳୍ぴ㡯┠್⟶㟁ᅽ㸦kV㸧185⟶㟁ὶ㸦mA㸧

0.2ࣆࢡࢭࣝᩘ㸦pixel㸧

15041504

ࣆࢡࢭࣝศゎ⬟㸦mm/pixel㸧

0.130  ᐇ㦂ᡭ㡰 ᅗ ࡣ㸪X ⥺ CT ⿦⨨ෆ࡟タ⨨ࡉࢀࡓᶍᆺᆅ┙ࡢ౛ࢆ♧ࡋ࡚࠸ࡿ㸬ᮏᐇ㦂࡟ࡣ㸪┤ᚄ 155㧗ࡉ 330mm ࡢ෇⟄ᆺᶍᆺᅵᵴࢆ⏝࠸ࡓ㸬ᶍᆺᮺࡣ㸪ᑍἲࡀ 5mm4.8mm
ᅗ X ⥺ CT ⿦⨨ࡢእほࡢ▴ᙧ᩿㠃㸪㛗ࡉ 210mm㸪ᶞ⬡ᮦᩱ࡛ 3D ࣉࣜࣥࢺࡉࢀ
ࡓࡶࡢ࡛࠶ࡿ㸬ᅗ ࡟♧ࡉࢀࡿࡼ࠺࡟㸪ᮺ㛫ᨵⰋࡉࢀ⾲ X ⥺ CT ⿦⨨ࡢ௙ᵝࡓᶍᆺᮺࡣ㸪ᨵⰋయ㒊ศࡀᶞ⬡〇࡛㸪ணࡵᮺ࡜୍య࡜࡞ࡗ㡯┠್᭱኱⟶㟁ᅽ㸦kV㸧

225ᶍᆺᆅ┙ࡢస〇࡛ࡣ㸪ᅵᵴෆ࡟ᶍᆺᮺࢆタ⨨ࡋࡓᚋ㸪┠᭱኱⟶㟁ὶ㸦mA㸧

1

ᶆࡢ┦ᑐᐦᗘࢆ 80%࡜ࡋ࡚✵୰ⴠୗἲ࡟ࡼࡾ┦㤿⌛◁ 4᭱኱ࣆࢡࢭࣝᩘ㸦pixel㸧

30083008

ྕࢆሁ✚ࡉࡏࡓ㸬ᆅ┙స〇ᚋ㸪ᶍᆺᅵᵴࢆ X ⥺ CT ⿦⨨ෆ᳨ฟჾ᭱኱⠊ᅖ㸦mm㸧

418418࡟⛣ືࡋ㸪㍕Ⲵ⿦⨨㸪ྛ✀ィࢫ࣏ࢵࢺࢧ࢖ࢬ㸦mm㸧

0.004

ࡢ X ⥺ CT ࢫ࢟ࣕࣥࢆ⾜ࡗࡓᚋ㸪㍕Ⲵࢆ㛤ጞࡋࡓ㸬㍕Ⲵ㏿ࡓ≧ែ࡛స〇㸦3D ࣉࣜࣥࢺ㸧ࡉࢀࡓࡶࡢ࡛࠶ࡿ㸬ჾࢆタ⨨ࡋࡓ㸬㍕Ⲵ๓ᆅ┙ᗘࡣ 1mm/min ࡛࠶ࡿ㸬㍕Ⲵ୰㸪ᮺ㢌Ỉᖹኚ఩ࡀ 1㸪2㸪4㸪
6㸪8㸪10mm ᫬࡟㍕Ⲵࢆ೵Ṇࡋ㸪X ⥺ CT ࢫ࢟ࣕࣥࢆ⾜ࡗX⥺CT⿦⨨

ࡓ㸬㍕Ⲵ୰ࡢィ㡯┠ࡣ㸪㍕ⲴⅬ࡟࠾ࡅࡿỈᖹⲴ㔜㸪Ỉᖹኚ఩࡛࠶ࡿ㸬⾲ ࡟ X ⥺ CT ᧜ᙳࡢ᮲௳୍ぴࢆ♧ࡍ㸬  ⏬ീゎᯒᡭἲX ⥺ CT ᶍᆺᐇ㦂ࡼࡾᚓࡽࢀࡓ⏬ീࢆゎᯒࡋ࡚㸪⤌ᮺࡢᨵⰋయ࿘㎶ᆅ┙ࡢኚᙧ㡿ᇦࢆᢕᥱࡍࡿࡇ࡜ࢆヨࡳࡓ㸬ᮏ◊✲࡛ࡣ㸪⏬ീゎᯒࢯࣇࢺ࢙࢘࢔ ImageJ
㸦Ferreira, T. and Rasband, W.㸪
2012㸧ࢆ⏝࠸ࡓ㸬X ⥺ CT ⏬ീࡣ㸪1 ࣆࢡࢭࣝ࠶ࡓࡾ 16ࣅࢵࢺࡢⓑ㯮⃰ῐ࡛⾲ࡉࢀࡿ㍤ᗘ್ࢆᣢࡕ㸪15041504
ࣆࢡࢭ࡛ࣝᵓᡂࡉࢀࡿࢹࢪࢱࣝ⏬ീ࡛࠶ࡿ㸬ᅗ ࡣ㸪ᅗ X ⥺ CT ⿦⨨ෆ࡟タ⨨ࡉࢀࡓᶍᆺᆅ┙࡜࿘㎶⿦༢ᮺࡢᐇ㦂ࢣ࣮ࢫ X-01 ࡛ᚓࡽࢀࡓᶍᆺᅵᵴ୰ኸ௜㏆࡟࠾⨨ࡢᴫせᅗ 㸦X-05㸧

ࡅࡿ㖄┤᩿ᒙ⏬ീ࡜ࡑࡢゎᯒ⤖ᯝࡢ౛ࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ୰a㸧ࡣ㍕Ⲵ๓㸪b㸧ࡣỈᖹ㍕Ⲵ࡟ࡼࡗ࡚ᮺ㢌ኚ఩ࡀ 4mm ࡟㐩ࡋࡓ᫬Ⅼ㸪c㸧ࡣࡇࢀࡽ 2 ᯛࡢ⏬ീࢆ⏝࠸࡚ゎᯒࢆ⾜ࡗࡓ⤖ᯝ࡛࠶ࡿ㸬⏬ീゎᯒ࡛ࡣ㸪ࡣࡌࡵ࡟㍕Ⲵ๓ᚋࡢ 2 ᯛࡢ⏬ീࢆ⏝࠸࡚㸪ྛࣆࢡࢭࣝࡢ఩⨨࡟࠾ࡅࡿ㍤ᗘ್ࡢᕪࢆィ⟬ࡋࡓ㸬ᆅ┙ኚᙧࡀ㉳ࡁ࡚࠸࡞࠸㡿ᇦ࡛ࡣ㸪㍕Ⲵ๓ᚋ࡟࠾
࠸࡚࡯ࡰྠ⛬ᗘࡢ㍤ᗘ್ࢆࡶࡘࡓࡵ㸪ᆅ┙ኚᙧࡀ㉳ࡇࡗࡓᨵⰋయ㒊ศ࡜⪃࠼ࡽࢀࡿ㍤ᗘ್ࡢኚ໬ࡀ኱ࡁ࠸㡿ᇦ࡜༊ูࡀྍ⬟࡟࡞ࡿ㸬ࡉࡽ࡟㸪࢚ࢵࢪ᳨ฟᶵ⬟ࡢ୍ࡘ࡛࠶ࡿࢯ࣮࣋ࣝࣇ࢕
ࣝࢱ㸦Ferreira, T. and Rasband, W.㸪2012㸧࡟ࡼࡗ࡚㸪㍤ᗘ

ᅗ ᮺ㛫ᨵⰋࡉࢀࡓᶍᆺ⤌ᮺ㸦X-05㸧್ࡢᕪࢆィ⟬ࡋࡓ⤖ᯝࡢ⏬ീ୰࡛㸪㍤ᗘ್ࡢኚ໬ࡀ኱ࡁ࠸
㡿ᇦ㸪ࡍ࡞ࢃࡕᆅ┙ኚᙧࡀ㉳ࡇࡗࡓ࡜⪃࠼ࡽࢀࡿ㡿ᇦࢆ┠- 13 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿❧ࡓࡏࡿฎ⌮ࢆ⾜ࡗࡓ㸬ᅗc ࡟࠾࠸࡚㸪ࡓࢃࡳⓎ⏕ศࡅ࡚♧ࡉࢀ࡚࠸ࡿ㸬୧ᅗ࡟ࡣ㸪ẚ㍑ࡢࡓࡵ༢ᮺࡢ⤖ᯝ࡟῝ࡉ࡛ᣦ♧ࡉࢀࡿᆅⅬ࠿ࡽᆅ⾲㠃࡟ྥ࠿ࡗ࡚ᗈࡀࡿ㏫୕

ࡘ࠸࡚᭤ࡆ࣮࣓ࣔࣥࢺࡢṇ㈇ࢆኚ᭦ࡋ࡚ేࡏ࡚♧ࡋࡓ㸬ᢲ

ゅᙧᆺࡢⓑⰍ㡿ᇦࡀᆅ┙ኚᙧࡢ㉳ࡇࡗࡓ࡜⪃࠼ࡽࢀࡿ㡿㎸ࡳഃࡢ༢ᩳᮺ㸦G-02㸧㸪༢ᮺ㸦G-01㸧㸪ᘬᢤࡁഃࡢ༢ᩳ

ᇦ࡛࠶ࡿ㸬ᮺࡢ๓㠃㸦ᅗ୰㸪ᮺࡢᕥഃ㸧࡛ཷືᔂቯ㡿ᇦ㸪ᮺ㸦G-03㸧ࡢ㡰࡟᭱኱᭤ࡆ࣮࣓ࣔࣥࢺࡀᑠࡉࡃ㸪᭤ࡆࣔᮺࡢ⫼㠃㸦ᅗ୰㸪ᮺࡢྑഃ㸧࡛୺ാᔂቯ㡿ᇦࡀᙧᡂࡉࢀࡿ࣮࣓ࣥࢺⓎ⏕఩⨨ࡀὸࡃ࡞ࡗ࡚࠸ࡿ㸬୍᪉㸪⤌ᮺ㸦G-04㸧

ᵝᏊࡀࡑࢀࡒࢀྍど໬ࡉࢀ࡚࠸ࡿ㸬࡛ࡣᢲ㎸ࡳᮺ㸪ᘬᢤࡁᮺ࡜ࡶ࡟Ⓨ⏕ࡋࡓ᭱኱᭤ࡆ࣮࣓ࣔࣥ
ࢺࡣ㸪༢ᮺ࡜༢ᩳᮺ࡟ẚ࡭࡚ࡣࡿ࠿࡟ᑠࡉ࠸㸬 ࡇࡇ࡛⤌ᮺࡢᶓ᢬ᢠ࣓࢝ࢽࢬ࣒ゎ᫂ࡢ୍ຓ࡜ࡍࡿࡓࡵ㸪

㍕Ⲵ᪉ྥ
ᆅ⾲㠃
ᮺ㢌㒊

㍈ຊศᢸ⋡࡟╔┠ࡋࡓヨ㦂⤖ᯝࡢᩚ⌮ࢆヨࡳࡓ㸬㍈ຊศᢸ

㍕Ⲵ䝻䝑䝗
වⲴ㔜ィ

⋡࡜ࡣ㸪⤌ᮺࡢᮺ㢌࡟Ỉᖹຊࡀస⏝ࡋࡓ࡜ࡁ㸪⤌ᮺࢆᵓᡂࡍࡿᢲ㎸ࡳᮺ࣭ᘬᢤࡁᮺࡢࡑࢀࡒࢀ࡟స⏝ࡍࡿ㍈᪉ྥຊࡢᮺᆅ୰㒊Ỉᖹᡂศ࡜ᮺ㢌Ⲵ㔜ࡢẚ࡛࠶ࡾ㸪୧ᮺ࡛ࡢ㍈ຊศᢸ⋡ࡢ࿴

ᅵᵴቨ

ᅵᵴቨ

ࡀ 100%ࡢሙྜ࡟ࡣ㸪୧ᮺࡢ㍈᪉ྥ᢬ᢠຊ࡛ᮺ㢌Ⲵ㔜ࢆ඲
X-01

a㸧㍕Ⲵ๓㸦ኚ఩ 0mm㸧X-01

࡚㈇ᢸࡍࡿࡇ࡜ࢆព࿡ࡍࡿ㸬ᅗ ࡣ㸪⤌ᮺࢣ࣮ࢫ㸦G-04㸧
࡟࠾࠸࡚㸪࡯ࡰᆅ⾲㠃௜㏆㸦῝ࡉ 0.075m㸧࡟㈞௜ࡉࢀࡓ

b㸧ኚ఩ 4mm ᫬ࡦࡎࡳࢤ࣮ࢪࡢ್࠿ࡽィ⟬ࡉࢀࡓ㍈ຊศᢸ⋡࡜ᮺ㢌Ⲵ㔜ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ࡟ࡣ㸪ᢲ㎸ࡳᮺ㸦push-in㸧㸪ᘬᢤ㍕Ⲵ᪉ྥࡁᮺ㸦pull-out㸧࠾ࡼࡧ඲య㸦total㸧ࡑࢀࡒࢀࡢ㍈ຊศᢸ⋡ࡢኚ໬ࢆ♧ࡋ࡚࠸ࡿ㸬ᅗࡼࡾ㸪඲యࡢ㍈ຊศᢸ⋡ࡀ࡯ࡰ
䛯䜟䜏Ⓨ⏕
῝䛥

100%㸪ࡍ࡞ࢃࡕᮺ㢌Ⲵ㔜ࢆ୧ᮺࡢ㍈᪉ྥ᢬ᢠຊ࡛඲࡚㈇ᆅ┙ኚᙧ㡿ᇦ

ᢸࡍࡿ≧ែ࠿ࡽ㸪ᮺ㢌Ⲵ㔜ࡢቑຍ࡜࡜ࡶ࡟㍈ຊศᢸ⋡ࡀῶ

X-01

1500N ࡲ࡛࡯ࡰ୍ᐃࡢഴࡁࢆࡶࡗ࡚㍈ຊศᢸ⋡ࡀῶᑡࡍᑡࡋ࡚࠸ࡃᵝᏊࡀࢃ࠿ࡿ㸬ࡇࡢ࡜ࡁᮺ㢌Ⲵ㔜ࡀ 500N ࠿ࡽࡿࡀ㸪1500N ࢆ㉸࠼ࡿ࡜㍈ຊศᢸ⋡ࡢῶᑡࡀⴭࡋࡃ࡞ࡿ㸬c㸧⏬ീゎᯒᚋ

ᅗ ࢆࡳࡿ࡜㸪G-04 ࡛ࡣ 1500N ௜㏆࡟ᮺ㢌Ⲵ㔜ኚ఩᭤ᅗ ᆅ┙ኚᙧ㡿ᇦࡢྍど໬ࡢ౛㸦X-01 ⥺ࡢᢡࢀ᭤ࡀࡾⅬࡀ఩⨨ࡋ㸪᭦࡞ࡿᮺ㢌ኚ఩ࡢቑຍ࡟ᑐࡋ
࡚༢ᮺࢣ࣮ࢫ࡜ྠᵝ࡞ᮺ㢌Ⲵ㔜ࡢቑຍഴྥࢆ♧ࡋ࡚࠸ࡿ㸬 ᐇ㦂⤖ᯝ༢ᮺࢣ࣮ࢫࡣ᭤ࡆ㸪ࡍ࡞ࢃࡕ㍈┤ゅ᪉ྥ᢬ᢠຊ࡟ࡼࡗ࡚ᮺ
㢌Ⲵ㔜࡟᢬ᢠࡍࡿࡇ࡜࠿ࡽ㸪⤌ᮺࡢሙྜ࡛ࡣᮺ㢌Ⲵ㔜ኚ఩ ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ᭤⥺ࡀᢡࢀ᭤ࡀࡾⅬࢆ㏄࠼ࡿ࡜㸪᭤ࡆ࡟ࡼࡿᶓ᢬ᢠ࡟ᛴ⃭ ⤌ᮺࡢᶓ᢬ᢠ≉ᛶࢆᢕᥱࡍࡿࡓࡵ࡟㸪༢ᮺ㸪༢ᩳᮺ࠾ࡼ

࡟⛣⾜ࡋ࡚࠸ࡃ࡜⪃࠼ࡽࢀࡿ㸬୍᪉㸪ᢲ㎸ࡳᮺ㸪ᘬᢤࡁᮺࡧ⤌ᮺࢆ⏝࠸ࡓ኱ᆺᶍᆺᐇ㦂࡟╔┠ࡍࡿ㸬ᅗ ࡣ㸪G-01

ࡢྛᮺ࡟࠾ࡅࡿ㍈ຊศᢸ⋡ࢆẚ࡭ࡿ࡜㸪ᖖ࡟ᘬᢤࡁᮺࡢ㍈

㹼G-04 ࡢᮺ㢌Ⲵ㔜࡜ኚ఩ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬༢ᮺ࠾ࡼຊศᢸ⋡ࡀ㧗࠸ࡀ㸪ᮺ㢌Ⲵ㔜ࡢቑຍ࡜࡜ࡶ࡟ࡑࡢᕪࡣᑠࡉ

ࡧ༢ᩳᮺࡢ⤖ᯝ࠿ࡽ㸪ᢲ㎸ࡳഃࡢ༢ᩳᮺ㸦G-02㸧㸪༢ᮺࡃ࡞ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬

㸦G-01㸧㸪ᘬᢤࡁഃࡢ༢ᩳᮺ㸦G-03㸧ࡢ㡰࡟ᶓ᢬ᢠࡀ኱ࡁ
ࡃ࡞ࡗ࡚࠾ࡾ㸪ᮺࡢഴᩳゅ࡜㍕Ⲵ᪉ྥࡢ㛵ಀ㸦ᅗ ཧ↷㸧ࡀᶓ᢬ᢠ࡟ᙳ㡪ࢆ୚࠼ࡿ࡜࠸࠺᪤ ࡢ⤖ᯝ㸦᪥ᮏ‴༠఍㸪2007a㸧࡟୍⮴ࡋ࡚࠸ࡿ㸬୍᪉㸪⤌ᮺ㸦G-04㸧࡛ࡣ᭱ࡶ኱ࡁ࡞ᶓ᢬ᢠࢆⓎ᥹ࡋ࡚࠾ࡾ㸪≉࡟㍕Ⲵึᮇ࡟࠾࠸࡚
ࡑࡢഴྥࡀ㢧ⴭ࡛࠶ࡿ㸬ᮺ㢌ኚ఩⣙ 10mm㸪ᮺ㢌Ⲵ㔜⣙
1500N ࢆ㉸࠼ࡿ࡜㸪⤌ᮺࡢᮺ㢌Ⲵ㔜ኚ఩᭤⥺ࡣ⦆ࡸ࠿࡞໙
㓄ࢆࡶࡕ㸪༢ᮺ࡜࡯ࡰྠᵝ࡞໙㓄࡜࡞ࡗ࡚࠸ࡿ㸬 ᅗ ࡣ㸪ᮺ㢌Ⲵ㔜 750N ᫬㸦G-02 ࡢ᭱኱ᮺ㢌Ⲵ㔜࡟࡯ࡰ➼ࡋ࠸㸧ࡢྛᮺࡢ᭤ࡆ࣮࣓ࣔࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ୰㸪༢ᩳᮺ࠾ࡼࡧ⤌ᮺࡢ⤖ᯝࡣ㸪ᢲ㎸ࡳᮺ࡜ᘬᢤࡁᮺ࡟

ᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦G-01㹼G-04㸧- 14 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶᢲ㎸䜏ᮺ┙཯ຊಀᩘ ks ࢆồࡵࡓ㸬ks ࡢヲ⣽࡞ồࡵ᪉ࡣ㸪௜㘓 $ᘬᢤ䛝ᮺࢆཧ↷ࡉࢀࡓ࠸㸬‴ᇶ‽㸦᪥ᮏ

‴༠఍㸪2007a㸧࡛ࡣ㸪ᮺࡢഴᩳゅࢆࣃ࣓࣮ࣛࢱ࡜ࡋ࡚⾜ࢃࢀࡓ┤ᮺ࠾ࡼࡧ」ᩘࡢ༢ᩳᮺࢆ⏝࠸ࡓ᪤ ࡢỈᖹ㍕Ⲵᐇ㦂⤖ᯝࢆࡶ࡜࡟㸪ᮺࡢഴᩳゅ࡟ᛂࡌ࡚ᆅ┙཯ຊಀᩘࢆ⿵ṇࡍࡿࡇ࡜ࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ ࡣ㸪᪤ ࡢᐇ㦂⤖ᯝ࡛ᚓࡽࢀࡓᮺࡢഴᩳゅ࡜ᆅ┙཯ຊಀᩘࡢ
㛵ಀࢆ♧ࡍᅗ࡟㸪ᮏ◊✲࡛ồࡵࡽࢀࡓ G-01㹼G-04 ࡢᆅ┙཯ຊಀᩘࢆ㏣ຍࡋࡓࡶࡢ࡛࠶ࡿ㸬ࡓࡔࡋ㸪ᆅ┙཯ຊಀᩘࡣ㸪┤ᮺ㸦ഴᩳゅ 0 ᗘ࡛㸪ᮏ◊✲ࡢሙྜ G-01㸧ࡢᆅ┙཯ຊಀᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦750N㸪G-01㹼G-04㸧ᩘ࡛ᶆ‽໬ࡉࢀ࡚࠸ࡿ㸬ᅗࡼࡾ㸪༢ᩳᮺࢣ࣮ࢫ㸦G-02㸪
G-03㸧࠾ࡼࡧ⤌ᮺࡢᢲ㎸ࡳᮺ㸦G-04㸪push-in㸧࡛ࡣ᪤ ࡢᐇ㦂⤖ᯝ࡟Ⰻࡃ୍⮴ࡍࡿࡶࡢࡢ㸪⤌ᮺࡢᘬᢤࡁᮺ㸦G-04㸪
pull-out㸧࡛ࡣ༢ᩳᮺ㸦ᘬᢤࡁഃ㸧࡟ẚ࡭࡚㠀ᖖ࡟ᑠࡉ࠸
್ࢆ♧ࡋ࡚࠸ࡿ㸬ࡇࢀࡣ㸪⤌ᮺࡢᢲ㎸ࡳᮺ࡛ࡣ๓㠃ᆅ┙ࡀ༢ᩳᮺࡢᢲ㎸ࡳഃࡢ๓㠃ᆅ┙࡜ྠᵝ࡟ᆅ┙཯ຊࢆⓎ᥹ࡍࡿࡢ࡟ᑐࡋ࡚㸪ᘬᢤࡁᮺࡢ๓㠃ᆅ┙㸪ࡍ࡞ࢃࡕᢲ㎸ࡳᮺ࡜ᘬᢤࡁᮺ࡟ᣳࡲࢀࡓᮺ㛫ᆅ┙ࡣ㸪ᘬᢤࡁᮺࡢ᭤ࡆ࡟ᑐࡍࡿ
ᆅ┙཯ຊ࡜ࡋ࡚༑ศ࡞᢬ᢠࢆ᭷ࡋ࡚࠸࡞࠸ࡇ࡜ࢆ♧ࡍࡶࡢ࡛࠶ࡿ㸬ࡇࡢࡼ࠺࡞ᆅ┙཯ຊ≉ᛶࡣ㸪⳥ụࡽ㸦1999㸧࠾ࡼࡧ
Terauchi, K. et al.㸦2000㸧ࡀሗ࿌ࡍࡿ⌧ᆅỈᖹ㍕Ⲵᐇ㦂ࡢᅗ ㍈ຊศᢸ⋡ࡢኚ໬㸦G-04㸧㸪ᶓ㍈㸸ᮺ㢌Ⲵ㔜⤖ᯝ࡟ࡶぢࡽࢀࡿ㸬ᙼࡽࡢᐇ㦂⤖ᯝ࡟ࡼࢀࡤ㸪ᮺ㢌࡛ࡢ㍈┤ゅ᪉ྥኚ఩ࡀ 10mm㸦ᮺᚄ 1000mm ࡟ᑐࡋ࡚ 1%㸧࡟㐩ࡋࡓ᫬ࡢᆅ┙཯ຊಀᩘ ks ࡣ㸪ᢲ㎸ࡳᮺ࡟ᑐࡋ࡚ᘬᢤࡁᮺ

2.5

Laboratory test
Laboratory test
In-situ testͤ᪤ 䛾ᐇ㦂⤖ᯝ

G-032

ࡢᆅ┙཯ຊಀᩘࡣ 25%ᑠࡉ࠸㸬ᙼࡽࡢᐇ㦂࡛ࡣ㸪ྠ୍ᆅ┙࡟࠾࠸࡚┤ᮺࢆ⏝࠸ࡓᐇ㦂ࢆ⾜ࡗ࡚࠸࡞࠸ࡓࡵ㸪ᅗ

G-01࡟࠾࠸࡚௚ࡢ⤖ᯝ࡜ẚ㍑ࡍࡿࡇ࡜ࡣ࡛ࡁ࡞࠸ࡀ㸪ᑡ࡞ࡃ࡜

1.5ࡶ⤌ᮺ࡜༢ᩳᮺࡢሙྜ࡛ࡣᮺࡢഴᩳゅ࡜ᆅ┙཯ຊಀᩘࡢ

1

0.5

㛵ಀࡀ␗࡞ࡾ㸪⤌ᮺࡢᘬᢤࡁᮺࡀᮺ㛫ᆅ┙࠿ࡽཷࡅࡿᆅ┙G-04, Push-in
ᘬᢤ䛝ᮺ

-θ

཯ຊࡣ㸪༢ᩳᮺࡢᘬᢤࡁഃࡢ๓㠃ᆅ┙࠿ࡽཷࡅࡿᆅ┙཯ຊᢲ㎸䜏ᮺࡼࡾᑠࡉ࠸࡜࠸࠺ᐇ㦂஦ᐇࡣ㸪ᐇ≀ࢫࢣ࣮ࣝࡢᮺ㸫ᆅ┙ᣲ
G-04, Pull-out+θ0-35 -30 -25 -20 -15 -10

-5

0

G-02
5

10

15

ື࡟ࡶ࠶࡚ࡣࡲࡿ࡜ゝ࠼ࡿ㸬
20

25

30

 ⤌ᮺࡢ࿘㎶ᆅ┙ࡢᆅ┙཯ຊ≉ᛶࢆ㸪X ⥺ CT ᶍᆺᐇ㦂࡟

35

Tilting angle of pile, degreeᅗ ᮺࡢഴᩳゅ࡜ᆅ┙཯ຊಀᩘࡢ㛵ಀ㸦᪥ᮏࡼࡿᆅ┙ኚᙧ㡿ᇦࡢྍど໬࡟ࡼࡗ࡚ほᐹࡍࡿࡇ࡜ࢆヨࡳ‴༠ࡓ㸬ᅗ ࡣ㸪X-01㹼X-04㸦⾲ ཧ↷㸧ࡢᮺ㢌Ⲵ㔜ኚ఍㸦2007a㸧࡟ຍ➹ಟṇ㸧㸪⦪㍈ࡣ┤ᮺ㸦ഴᩳゅ 0 ᗘ㸧ࡢ఩ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ ࡣ㸪G-02㹼G-04 ࡛ᚓࡽࢀᆅ┙཯ຊಀᩘ࡛ᶆ‽໬

ࡓ㍕Ⲵ๓࠾ࡼࡧᮺ㢌ኚ఩ࡀ༑ศ࡟⏕ࡌ࡚㍈┤ゅ᪉ྥ᢬ᢠ࡟⛣⾜ࡋࡓ࡜ᛮࢃࢀࡿᮺ㢌ኚ఩ 4mm ᫬ࡢ X ⥺ CT ⏬ീࢆ ௨ୖࡢ⤖ᯝ࠿ࡽ㸪⤌ᮺࡢᶓ᢬ᢠࡣ㸪ᮺ㢌Ⲵ㔜ኚ఩ࡢቑຍ

⏝࠸࡚㸪  ࡢ⏬ീゎᯒࢆ⾜ࡗࡓ⤖ᯝࢆ♧ࡋ࡚࠸ࡿ㸬༢

࡜࡜ࡶ࡟㍈᪉ྥ᢬ᢠຊ࡟ࡼࡿ᢬ᢠ࠿ࡽ㍈┤ゅ᪉ྥ᢬ᢠຊ

ᩳᮺ㸦X-02㸪X-03㸧ࡢ⤖ᯝࡼࡾ㸪࠸ࡎࢀࡶᮺ࿘㎶࡟ᆅ┙࡟ࡼࡿ᢬ᢠ࡟⛣⾜ࡋ࡚࠸ࡃࡇ࡜ࡀࢃ࠿ࡗࡓ㸬ࡑࡇ࡛㸪ᮺࡢኚᙧ㡿ᇦࡀᙧᡂࡉࢀࡿࡀ㸪ᢲ㎸ࡳᮺ㸦X-02㸧࡟࠾࠸࡚ࡼ

㍈┤ゅ᪉ྥࡢኚ఩࡟ᑐࡋ࡚㸪ᮺࡢ࿘㎶ᆅ┙ࡀ࡝ࡢࡼ࠺࡟᢬ࡾ῝࠸఩⨨ࡲ࡛ኚᙧࡀཬࢇ࡛࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬୍᪉㸪ᢠࡋ࡚࠸ࡿࡢ࠿ࢆㄪ࡭ࡿࡓࡵ㸪G-01㹼G-04 ࡟ࡘ࠸࡚㸪ᆅ

X-04 ࡢ⤖ᯝࡼࡾ㸪༢ᩳᮺ㸦X-02 ࠾ࡼࡧ X-03㸧ࡢᆅ┙ኚᙧ㡿ᇦࢆ㔜ࡡ࡚ࡳࡿ࡜㸪ᮺ㛫ᆅ┙࡟࠾ࡅࡿኚᙧ㡿ᇦࡀ X-03
- 15 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ࡢኚᙧ㡿ᇦࡼࡾ῝࠸఩⨨ࡲ࡛ཬࢇ࡛࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇࢀ࡚࠸ࡿ㸬ᅗࡼࡾ㸪ᨵⰋయࡀ࠶ࡿࢣ࣮ࢫ C-02㹼C-04 ࡛ࡣࢀࡣ㸪⤌ᮺࡢᘬᢤࡁᮺࡢ㍈┤ゅ᪉ྥຊ࡟ᑐࡍࡿᮺ㛫ᆅ┙ࡢᮺ㢌ኚ఩ࡀ C-01㸦↓ᨵⰋ㸧ࡼࡾࡶᑠࡉࡃ࡞ࡗ࡚࠾ࡾ㸪ᨵ᢬ᢠࡀᑠࡉࡃ㸪ࡼࡾ῝࠸఩⨨࠿ࡽᘬᢤࡁᮺࡀ᭤ࡆࡽࢀ࡚࠸Ⰻయࢆタ⨨ࡍࡿࡇ࡜࡛ᮺ㢌ኚ఩ࢆᢚไࡍࡿຠᯝࡀࡳࡽࢀ

ࡿࡇ࡜ࢆ♧ࡍࡶࡢ࡛࠶ࡾ㸪ᅗ ࡟࠾࠸࡚⤌ᮺ࡛ࡣᘬᢤ

ࡿ㸬ࡲࡓ㸪ᮺ㢌ኚ఩࡟ᑐࡋ࡚ࡣᨵⰋయࡢ㓄⨨࡟㛵ࢃࡽࡎ࡯ࡁᮺࡢ๓㠃ᆅ┙ࡢᆅ┙཯ຊಀᩘࡀᑠࡉ࠸࡜࠸࠺⤖ᯝࢆ⿬ࡰྠ⛬ᗘࡢຠᯝࡀ࠶ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬௜ࡅࡿࡶࡢ࡛࠶ࡿ㸬ᅗ ࡣ㸪ᮺ㢌Ⲵ㔜ࡀ 3000kN ᫬࡟࠾ࡅࡿ༢఩ᖜᙜࡾࡢ
᭤ࡆ࣮࣓ࣔࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬ᅗࡼࡾ㸪ᢲ㎸ࡳᮺࢆࡳࡿ࡜㸪≉࡟ᮺ㛫ᨵⰋࢆྵࡴ C-02 ࠾ࡼࡧ C-03 ࡟࠾࠸࡚᭱኱
᭤ࡆ࣮࣓ࣔࣥࢺࡢపῶࡀⴭࡋ࠸㸬୍᪉㸪ᘬᢤࡁᮺࢆࡳࡿ࡜㸪C-02 ࡸ C-04 ࡟࠾࠸࡚ C-01 ࡼࡾ኱ࡁ࡞᭱኱᭤ࡆ࣮࣓ࣔࣥ

X-ray CTscanningࢺࡀⓎ⏕ࡋ࡚࠾ࡾ㸪ᨵⰋయࢆタ⨨ࡋࡓࢣ࣮ࢫ࡛᭱኱᭤ࡆࣔ
࣮࣓ࣥࢺࡀᚲࡎࡋࡶపῶࡉࢀ࡞࠸ࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇࢀࡣ㸪
C-02㹼C-04 ࡛ࡣᮺ㛫✺ฟ㒊㸦ᅗ ཧ↷㸧࡟ᨵⰋయࡀタ⨨ࡉࢀ࡚࠸࡞࠸ࡓࡵ㸪ᆅ┙୰࡟࠶ࡿᮺ㸫ᨵⰋయࡢ」ྜᵓ㐀࡜ࡋ࡚ࡢ๛ᛶ࡟ẚ࡭࡚ᮺ㛫✺ฟ㒊࡛ࡣᶍᆺᮺ༢⊂ࡢ๛ᛶ࡜࡞ࡿࡢ࡛┦ᑐⓗ࡟๛ᛶࡀపࡃ㸪ὸ࠸఩⨨࡛ᒁᡤⓗ࡟኱ࡁ࡞᭤ࡆࡀⓎ⏕ࡋࡓࡓࡵ࡜᥎ᐹࡉࢀࡿ㸬ᅗ ࡟࠾࠸࡚㸪C-01 ࡟ẚ࡭࡚ C-02㹼C-04 ࡛ࡣ࠸ࡎࢀࡶ᭤ࡆⓎ⏕῝ࡉࡀὸᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦X-01㹼X-04㸧࠸ࡇ࡜ࡶࡇࡢ᥎ᐹࢆ⿬௜ࡅࡿࡶࡢ࡛࠶ࡿ㸬ᮺ㛫✺ฟ㒊ࡢᨵⰋ࡟ࡼࡿᙳ㡪࡟ࡘ࠸࡚ࡣ㸪C-09 ࡢ⤖ᯝࢆࡶ࡜࡟ᚋ㏙ࡍࡿ㸬௨ୖࡼࡾ㸪ᘬᢤࡁᮺࡢ᭤ࡆ࣮࣓ࣔࣥࢺࡢపῶຠᯝ࡟ࡣㄢ

㍕Ⲵ᪉ྥ

㍕Ⲵ᪉ྥ

㢟ࡀṧࡿࡶࡢࡢ㸪ᨵⰋయࡢタ⨨࡟ࡼࡿᮺ㢌ኚ఩ࡢᢚไຠᯝ
ࡣ኱ࡁࡃ㸪ᨵⰋయࡢ㓄⨨ࡢᙳ㡪ࡣᑠࡉ࠸ࡇ࡜ࡀࢃ࠿ࡗࡓ㸬ᆅ┙ኚᙧ㡿ᇦ

ࡑࡢࡓࡵ㸪᭱ࡶᨵⰋయ✚ࡢᑠࡉ࠸ᮺ㛫ᨵⰋࡀ⤌ᮺࡢᶓ᢬ᢠ

ᆅ┙ኚᙧ㡿ᇦ

ቑຍ࡟᭱ࡶຠᯝⓗ࡞᪉ἲ࡛࠶ࡿ࡜ุ᩿ࡉࢀࡓ㸬X-02

a㸧ᢲ㎸ࡳᮺ㸦X-02㸧  ᨵⰋయࡢ῝ࡉࡢᙳ㡪X-03 ᅗ ࠾ࡼࡧᅗ ࡣ㸪ᨵⰋయ῝ࡉࡢ␗࡞ࡿ 4 ࢣ࣮ࢫ
㸦C-01㸪C-02㸪C-05 ࠾ࡼࡧ C-06㸧ࡢᮺ㢌Ⲵ㔜ኚ఩ࡢ㛵ಀb㸧ᘬᢤࡁᮺ㸦X-03㸧

࠾ࡼࡧᮺ㢌Ⲵ㔜 3000kN ᫬࡟࠾ࡅࡿ༢఩ᖜᙜࡓࡾࡢ᭤ࡆࣔ

㍕Ⲵ᪉ྥ

࣮࣓ࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬ࡇࡇ࡛㸪ྛࢣ࣮ࢫࡢᨵⰋయࡢ
X-02䛾ᆅ┙ኚᙧ㡿ᇦ῝ࡉࡣ㸪↓ᨵⰋࢣ࣮ࢫࡢᢲ㎸ࡳᮺࡢ᭱኱᭤ࡆ࣮࣓ࣔࣥࢺⓎ

X-03䛾ᆅ┙ኚᙧ㡿ᇦ

⏕῝ࡉ࡟ᑐࡋ࡚㸪C-02 ࡀ 4 ಸ㸪C-05 ࡀ 2 ಸ㸪C-06 ࡀ 1 ಸࡢ῝ࡉ࡟┦ᙜࡍࡿ㸬ྛᅗࡼࡾ㸪ᨵⰋయ῝ࡉࡢ㐪࠸࡟ࡼࡽࡎ㸪

ᮺ㛫ᆅ┙䛾
ኚᙧ᭱ୗ➃

ᮺ㛫ᨵⰋ࡟ࡼࡿᮺ㢌Ⲵ㔜࠾ࡼࡧ᭤ࡆ࣮࣓ࣔࣥࢺࡢపῶຠ
X-04

ᯝࡣྠ⛬ᗘⓎ᥹ࡉࢀࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡓࡔࡋ㸪ᘬᢤࡁᮺࡢ

c㸧⤌ᮺ㸦X-04㸧

᭤ࡆ࣮࣓ࣔࣥࢺศᕸࢆࡳࡿ࡜㸪๓㏙࡜ྠᵝ࡟ᮺ㛫✺ฟ㒊ࡀᅗ X ⥺ CT ᶍᆺᐇ㦂࡟ࡼࡿᆅ┙ኚᙧ㡿ᇦࡢほᐹᮍᨵⰋ࡛࠶ࡿࡇ࡜ࡢᙳ㡪࡜ᛮࢃࢀࡿ㐣኱࡞᭱኱᭤ࡆ࣮࣓ࣔࣥࢺࡢⓎ⏕ࡀࡳࡽࢀࡿ㸬ࡇࡢࡼ࠺࡟㸪ᨵⰋయࡢ῝ࡉ࡟ࡼ ᮺ㛫ᨵⰋࡉࢀࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶࡿᙳ㡪ࡀࡳࡽࢀ࡞࠸⌮⏤࡜ࡋ࡚㸪ᐇ㦂᳨࡛ウࡋࡓᮺ㢌Ⲵ㔜  ᨵⰋయࡢ㓄⨨࡟ࡼࡿᙳ㡪ኚ఩ࣞ࣋ࣝࡀᑠࡉ࠸ࡇ࡜ࡸ㸪ᮺ㛫ᨵⰋ࡟࠾ࡅࡿᨵⰋయࡀᢸ

ᅗ ࡣ㸪ᨵⰋయࡢ㓄⨨ࡢ␗࡞ࡿ㐲ᚰᶍᆺᐇ㦂ࡢࢣ࣮࠺Ⲵ㔜ఏ㐩ᶵᵓ࡜ࡋ࡚ࡢᙺ๭ࡀ኱ࡁࡃ㛵ಀࡋ࡚࠸ࡿࡶࡢ
࡜⪃࠼ࡽࢀࡿ㸬ヲ⣽ࡣ㸪 ࡛㏙࡭ࡿ㸬ࢫ C-01㹼C-04 ࡛ᚓࡽࢀࡓᮺ㢌ࡢⲴ㔜࡜ኚ఩ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬࡞࠾㸪௨㝆࡟♧ࡉࢀࡿ㐲ᚰᶍᆺᐇ㦂⤖ᯝࡣ㸪⾲ࡢ┦ఝ๎㸦n=50㸧࡟ᚑࡗ࡚㸪඲࡚ᐇ≀ࢫࢣ࣮ࣝ࡟᥮⟬ࡉ- 16 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ  ᨵⰋయࡢᙉᗘ࣭๛ᛶࡢᙳ㡪 ᅗ ࠾ࡼࡧᅗ ࡣ㸪ᨵⰋయࡢᙉᗘ࣭๛ᛶࡢ␗࡞
ࡿ 5 ࢣ࣮ࢫ㸦C-01㸪C-05㹼C-08㸧ࡢᮺ㢌Ⲵ㔜ኚ఩ࡢ㛵ಀ࠾ࡼࡧᮺ㢌Ⲵ㔜 3000kN ᫬࡟࠾ࡅࡿ༢఩ᖜᙜࡓࡾࡢ᭤ࡆ࣮ࣔ
࣓ࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬ᅗࡼࡾ㸪ᨵⰋయࡢᙉᗘ࣭๛ᛶ࠾ࡼࡧࡑࡢ῝ࡉ࡟ࡼࡗ࡚ࡶᮺ㛫ᨵⰋ࡟ࡼࡿᨵⰋຠᯝࡢ᭷ព
࡞㐪࠸ࡣࡳࡽࢀ࡞࠸㸬  ᮺ㛫✺ฟ㒊ࡢᅛ໬࡟ࡼࡿᮺ㛫ᨵⰋࡢຠᯝ ᅗ ࠾ࡼࡧᅗ ࡣ㸪ᮺ㛫✺ฟ㒊ࡢᅛ໬࡟ࡼࡿᮺ
ᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦C-01㸪C-02㸪C-05㸪C-06㸧㛫ᨵⰋຠᯝࡢ㐪࠸ࢆㄪ࡭ࡿࡓࡵ࡟㸪C-01㸪C-08 ࠾ࡼࡧ C-09
࡛ᚓࡽࢀࡓᮺ㢌Ⲵ㔜ኚ఩ࡢ㛵ಀ࠾ࡼࡧᮺ㢌Ⲵ㔜 3000kN ᫬

ᢲ㎸䜏ᮺ

ᘬᢤ䛝ᮺ

࡟࠾ࡅࡿ༢఩ᖜᙜࡓࡾࡢ᭤ࡆ࣮࣓ࣔࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬ᅗ ࡼࡾ㸪ᮺ㛫ᆅ┙ࡔࡅ࡛࡞ࡃᮺ㛫✺ฟ㒊ࡶᨵⰋࡋࡓ C-09 ࡛ࡣ㸪C-08 ࡜ẚ࡭࡚ࡉࡽ࡟኱ࡁ࡞ᮺ㢌ኚ఩ࡢᢚไຠᯝࡀ⌧ࢀ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ᅗ ࢆࡳࡿ࡜㸪
C-09 ࡟࠾࠸࡚㸪ᢲ㎸ࡳᮺ࡜ᘬᢤࡁᮺࡢ୧᪉࡟࠾࠸࡚㸪᭱኱᭤ࡆ࣮࣓ࣔࣥࢺࡢపῶຠᯝࡀ㢧ⴭ࡟⌧ࢃࢀ࡚࠸ࡿࡇ࡜
ࡀࢃ࠿ࡿ㸬௨ୖ࠿ࡽ㸪ᮺ㛫ᨵⰋࢆ⾜࠺ሙྜ࡟ࡣ㸪ᮺ㛫ᆅ┙ࡔࡅ࡛࡞ࡃᮺ㢌௜㏆ࢆᅛ໬ࡍࡿࡇ࡜ࡀຠᯝⓗ࡛࠶ࡿࡇ࡜
ࡀࢃ࠿ࡗࡓ㸬
ᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦C-01㸪C-02㸪C-05㸪C-06㸧ᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦C-01㸪C-05㹼C-08㸧ᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦C-01㹼C-04㸧
ᢲ㎸䜏ᮺ

ᢲ㎸䜏ᮺ

ᘬᢤ䛝ᮺ

ᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦C-01㹼C-04㸧ᘬᢤ䛝ᮺᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦C-01㸪C-05㹼C-08㸧- 17 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ࢪ࠿ࡽィ⟬ࡉࢀࡿ㍈ຊศᢸ⋡ࢆ♧ࡋ࡚࠸ࡿ㸬ᆅ┙῝ࡉ
0.075m ࡛ࡢᮺ㢌Ⲵ㔜࡟ᑐࡍࡿ ㍈ຊศᢸ⋡ࡢኚ໬ 㸦 ᅗa ཧ↷㸧ࢆࡳࡿ࡜㸪ᮺ㢌Ⲵ㔜ࡀ 500N ࢆ㉸࠼ࡿ࡜ G-04
࠾ࡼࡧ G-05 ࡢ㛫࡟ᚎࠎ࡟㐪࠸ࡀ⌧ࢀጞࡵ㸪G-04 ࡛ࡣ㍈ຊศᢸ⋡ࡀᘬࡁ⥆ࡁῶᑡࡋ࡚࠸ࡿࡢ࡟ᑐࡋ࡚㸪G-05 ࡛ࡣᮺ㢌Ⲵ㔜ࡀቑຍࡋ࡚ࡶ 80%⛬ᗘࡢ㧗࠸㍈ຊศᢸ⋡ࢆ⥔ᣢࡋ⥆ࡅࡿ㸬ࡇࡇ࡛㸪ᅗ ࠿ࡽࢃ࠿ࡿ࡜࠾ࡾ㸪ᮺ㢌ኚ఩ࡢᢚไຠᯝࡣᮺ㢌Ⲵ㔜ࡀ 500N ࢆ㉸࠼ࡓ࡜ࡇࢁ࠿ࡽ㢧ᅾ໬ࡋጞࡵࡿࡇ࡜࠿ࡽ㸪ᨵⰋయࡀỈᖹⲴ㔜ࢆྛᮺࡢ㍈᪉ྥຊ࡜ࡋ
࡚ఏ㐩ࡍࡿᙺ๭ࢆᢸ࠺ࡇ࡜࡛ᶓ᢬ᢠࡀቑ኱ࡋࡓ࡜⪃࠼ࡽᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦C-01㸪C-08㸪C-09㸧ࢀࡿ㸬㐲ᚰᶍᆺᐇ㦂ࡢ C-03㹼C-04 ࡛ࡣ㍈ຊࡀィࡉࢀ࡚࠸࡞࠸ࡓࡵ㍈ຊศᢸ⋡ࢆホ౯ࡍࡿࡇ࡜ࡣ࡛ࡁ࡞࠸ࡀ㸪ᨵⰋᢲ㎸䜏ᮺయࡢ㓄⨨ࡀ␗࡞ࡿሙྜ࡛ࡶ㸪ᮺ㢌Ⲵ㔜ࢆྛᮺࡢ㍈ຊ࡜ࡋ࡚ᘬᢤ䛝ᮺຠ⋡Ⰻࡃఏ㐩ࡍࡿࡇ࡜࡟ࡼࡿᶓ᢬ᢠቑຍࡀ༟㉺ࡋࡓ⤖ᯝ㸪ྠ⛬ᗘࡢᨵⰋຠᯝࡀ⌧ࢀࡓࡢ࡛ࡣ࡞࠸࠿࡜᥎ᐹࡉࢀࡿ㸬ᮺ㛫ᨵⰋ࡟࠾࠸࡚ᨵⰋయࡢᙉᗘ࣭๛ᛶࡀ㧗࠸ࢣ࣮ࢫ㸦C-07㸪
C-08㸧࡛ࡶ㸪ప࠸ࢣ࣮ࢫ㸦C-05㸪C-06㸧࡜࡯ࡰྠᵝ࡞ᶓ᢬ᢠቑຍࡀぢࡽࢀࡓࡢࡣ㸪ࡇࡢࡼ࠺࡞⌮⏤࡟ࡼࡿࡶࡢ࡜⪃࠼ࡽࢀࡿ㸬୍᪉㸪ᨵⰋయࡢ῝ࡉࡢ␗࡞ࡿࢣ࣮ࢫ㸦C-02㸪C-05㸪
C-06㸧࡛㸪ᨵⰋຠᯝ࡟㐪࠸ࡀぢࡽࢀ࡞࠿ࡗࡓࡢࡣ㸪㐲ᚰᶍᆺᐇ㦂࡛⾜ࡗࡓ㍕Ⲵࡢኚ఩ࣞ࣋ࣝࡀᑠࡉࡃ㸪᭤ࡆ࣮࣓ࣔࣥ
ࢺࡢపῶຠᯝ࡟࠶ࡲࡾ㐪࠸ࡀぢࡽࢀ࡞࠿ࡗࡓࡓࡵ㸪ᮏ᮶㍈ᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦C-01㸪C-08㸪C-09㸧

┤ゅ᪉ྥ࡟᭤ࡀࢁ࠺࡜ࡍࡿᮺࢆᢚ࠼ࡿࡇ࡜࡛ᨵⰋຠᯝࢆ
Ⓨ᥹ࡍࡿᮺ㛫ᨵⰋ࡟࡜ࡗ࡚㸪ࡑࡢᨵⰋຠᯝ࡟㐪࠸ࡀぢࡽࢀ ᮺ㛫ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑຍࡢ࣓࢝ࢽࢬ࣒

࡞࠿ࡗࡓ࡜᥎ᐹࡉࢀࡿ㸬኱ᆺᶍᆺᐇ㦂࡛ࡣ㸪↓ᨵⰋࢣ࣮ࢫ㸦G-04㸧࡟࠾ࡅࡿ᭱

ᮺ㛫ᨵⰋࢣ࣮ࢫ࡟࠾࠸࡚㸪ᆅ┙῝ࡉ 0.3m ࡛ࡢ㍈ຊศᢸ኱᭤ࡆ࣮࣓ࣔࣥࢺⓎ⏕఩⨨௜㏆ࡲ࡛ࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋ

⋡ࡣ㍕Ⲵ୰࡯ࡰ 60%࡛᥎⛣ࡋ࡚࠾ࡾ㸪ࡑࡢኚ໬ഴྥࡣᆅ

ࡓࢣ࣮ࢫ㸦G-05㸧ࡢᐇ㦂ࢆ⾜࠸㸪ᮺ㛫ᨵⰋ࡟ࡼࡿᶓ᢬ᢠ

┙῝ࡉ 0.075m ࡜࡯ࡰྠᵝ࡛࠶ࡿ㸬ࡘࡲࡾ㸪ᮺ㢌Ⲵ㔜ࡢṧቑຍ࣓࢝ࢽࢬ࣒ࢆㄪ࡭ࡓ㸬ᅗ ࡣ㸪G-04㸪G-05 ࡛ᚓࡾ 40%࡟ᑐࡋ࡚㸪ᨵⰋయୗ➃ࡼࡾୖ㒊ࡢᮺ㸫ᨵⰋయࡢ」ࡽࢀࡓᮺ㢌Ⲵ㔜ኚ఩ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬㐲ᚰᶍᆺᐇ㦂⤖ྜᵓ㐀࡛᢬ᢠࢆࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡇࡢ࡜ࡁ㸪0.075m

ᯝ࡜ྠᵝ࡟㸪ᮺ㛫ᨵⰋ࡟ࡼࡗ࡚ᮺ㢌ኚ఩ࡀᢚไࡉࢀ࡚࠸ࡿ

ࡼࡾὸ࠸఩⨨㸦ᆅୖ㒊㸧࡛ࡣᆅ┙཯ຊࡀ࡯ࡰస⏝ࡋ࡞࠸ࡇࡇ࡜ࡀࢃ࠿ࡿ㸬࡜࠿ࡽ㸪ᮺࡢ㍈┤ゅ᪉ྥ᢬ᢠຊࡀᮺ㢌Ⲵ㔜࡟᢬ᢠࡋ࡚࠸ࡿ

ᅗ ࡣ㸪ᅗ୰࡟♧ࡉࢀࡿ 3 ẁ㝵ࡢᮺ㢌Ⲵ㔜࡟࠾ࡅࡿ࡜⪃࠼ࡽࢀࡿ㸬ࡲࡓ㸪0.075m ࠿ࡽ 0.3m ࡟఩⨨ࡍࡿᨵⰋయ

᭤ࡆ࣮࣓ࣔࣥࢺศᕸࢆ♧ࡋ࡚࠸ࡿ㸬G-05 ࡛ࡣ C-09 ࡜ྠᵝ㒊࡛ࡣ㸪ᮺ㸫ᨵⰋయࡢ࿘㠃࡟స⏝ࡍࡿᦶ᧿ຊ㸪ᨵⰋయ┤ୗ࡟ᮺ㛫✺ฟ㒊ࡶᅛ໬ࡉࢀ࡚࠸ࡿࡓࡵ㸪ᢲ㎸ࡳ࣭ᘬᢤࡁ୧ᮺ

ࡢᗏ㠃ᨭᣢຊ࠾ࡼࡧᗏ㠃ᦶ᧿ຊ㸪ᢲ㎸ࡳᮺࡢ๓㠃ᆅ┙࡟స࡛᭤ࡆ࣮࣓ࣔࣥࢺࡀ G-04 ࡟ẚ࡭࡚኱ࡁࡃపῶࡉࢀ࡚࠸ࡿ

⏝ࡍࡿཷാᅵᅽࡀᮺ㢌Ⲵ㔜࡟ᑐࡋ࡚」ྜⓗ࡟᢬ᢠࡋ࡚࠸

ࡇ࡜ࡀࢃ࠿ࡿ㸬ࡲࡓ㸪ࡑࡢపῶຠᯝࡣ㸪ᮺ㢌Ⲵ㔜ࡀ኱ࡁࡃࡿ࡜⪃࠼ࡽࢀࡿ㸬࡞ࡿ࡯࡝㢧ⴭ࡟࡞ࡗ࡚࠸ࡿ㸬ࡲࡓ㸪ᅗa ࡢ G-05 ࡟࠾࠸࡚㸪ᮺ㢌ỈᖹⲴ㔜ࡀ 2300N

 ௨ୖࡢࡇ࡜࠿ࡽ㸪ᮺ㛫ᨵⰋࡢ᭷↓࡟ࡼࡗ࡚ᮺ࡟స⏝ࡍࡿ௜㏆࡛ᛴ⃭࡟㍈ຊศᢸ⋡ࡀῶᑡࡋ࡚࠸ࡿࡇ࡜ࡀࢃ࠿ࡿ㸬ࡇⲴ㔜㸦㍈᪉ྥຊࡸ㍈┤ゅ᪉ྥຊ㸧ࡢศᢸ๭ྜ࡟㐪࠸ࡀ࠶ࡿࢀࡣ㸪ᅗ ࡢᮺ㢌ỈᖹⲴ㔜ኚ఩᭤⥺࡟࠾ࡅࡿᢡࢀ᭤ࡀ

ࡇ࡜ࡀ᥎ᐹࡉࢀࡿ㸬ࡑࡇ࡛㸪G-04 ࠾ࡼࡧ G-05 ࡟ࡘ࠸࡚㍈

ࡾⅬ௜㏆㸦ᮺ㢌ኚ఩⣙ 15mm㸧ࡢ᫬Ⅼ࡟୍⮴ࡋ࡚࠸ࡿ㸬ࡇຊศᢸ⋡ࢆㄪ࡭ࡓ㸬ᅗ ࡣ㸪ᮺ㢌Ⲵ㔜࠾ࡼࡧᮺ㢌ኚ఩ࡢ࡜ࡁ㸪ᅗ ࡼࡾᢡࢀ᭤ࡀࡾⅬࢆ⤒ࡓᚋࡶ㍕Ⲵ⤊஢ࡲ࡟ᑐࡍࡿ㍈ຊศᢸ⋡ࡢኚ໬ࢆ♧ࡋ࡚࠸ࡿ㸬ࡓࡔࡋ㸪G-04

୍࡛ᐃࡢᮺ㢌Ⲵ㔜ࢆಖᣢࡋ࡚࠸ࡿࡇ࡜࠿ࡽ㸪ᮺ㛫ᨵⰋࡢሙ࡛ࡣᆅ⾲㠃࠿ࡽᆅ┙῝ࡉ 0.075m ࡢ఩⨨㸪G-05 ࡛ࡣࡑࢀ࡟

ྜ࡟ࡣᮺ㢌ኚ఩ࡀ኱ࡁࡃ࡞ࡗ࡚ࡶᛴ⃭࡟ᶓ᢬ᢠࡀῶᑡࡍ

ຍ࠼࡚㸪ᨵⰋయࡢ┤ୗ㸦ᆅ⾲㠃࠿ࡽ 0.3m㸧ࡢࡦࡎࡳࢤ࣮

ࡿࡇ࡜ࡣ࡞࠸㸬ࡇࢀࡣᨵⰋయ࡟࠾࠸࡚ᮺ࡜ࡢ๤㞳ࡸࡦࡧ๭- 18 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶࢀ➼ࡢ◚ቯࡀⓎ⏕ࡋࡓሙྜ࡟࠾࠸࡚ࡶᙜ࡚ࡣࡲࡿࡇ࡜ࢆ
ᐇ㦂ᚋࡢᨵⰋయࡢほᐹ࠿ࡽ☜ㄆࡋ࡚࠸ࡿ㸦௜㘓 $ ཧ↷㸧㸬500N

୍᪉㸪ᮺ㢌ኚ఩࡟ᑐࡍࡿᆅ┙῝ࡉ 0.075m㸦ᆅ⾲㠃௜㏆㸧
࡛ࡢ㍈ຊศᢸ⋡ࡢኚ໬㸦ᅗb ཧ↷㸧ࢆぢࡿ࡜㸪ᮺ㢌ኚ఩ࡀ⣙ 2mm ࡟㐩ࡍࡿࡲ࡛࡟ᛴ⃭࡟㍈ຊศᢸ⋡ࡀῶᑡࡍ

2000N

ࡿࡶࡢࡢ㸪2mm ࢆ㉸࠼ࡿ࡜ᮺ㛫ᨵⰋࡢ᭷↓࡟౫ࡽࡎᮺ㢌1000N

ኚ఩࡜㍈ຊศᢸ⋡ࡣẚ౛㛵ಀࢆ♧ࡍ㸬ࡇࡢ࡜ࡁ㸪↓ᨵⰋࢣ࣮ࢫ࡟࠾࠸࡚㍈ຊศᢸ⋡ࡢῶᑡ⋡ࡀࡸࡸ኱ࡁ࠸㸬ᮺ㛫ᨵⰋ࡟ࡼࡿ⤌ᮺࡢ࿘㎶ᆅ┙ࡢኚᙧᣲືࢆ㸪X ⥺ CTᶍᆺᐇ㦂࡟ࡼࡗ࡚ほᐹࡍࡿࡇ࡜ࢆヨࡳࡓ㸬ᅗ ࡣ㸪↓ᨵⰋࢣ࣮ࢫ㸦X-04㸧࠾ࡼࡧᮺ㛫ᨵⰋࢣ࣮ࢫ㸦X-05㸧ࡢᮺb㸧ᘬᢤࡁᮺ

㢌Ⲵ㔜ኚ఩ࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬ᅗࡼࡾ㸪ᮺ㛫ᨵⰋ࡟ࡼࡾ

ᅗ ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ㸦G-04㸪G-05㸧ᶓ᢬ᢠࡀቑຍࡋ࡚࠸ࡿࡇ࡜ࡀ☜ㄆࡉࢀࡿ㸬ᆅ┙ኚᙧ㡿ᇦࢆྍど໬ࡍࡿࡓࡵ࡟㸪ᮺ㛫ᨵⰋ࡟ࡼࡿຠᯝࡀ⌧ࢀጞࡵࡿᮺ㢌ኚ఩ 4mm ᫬࡜㍕Ⲵ๓ࡢ⏬ീࢆ⏝࠸࡚㸪  ࡢ⏬ീゎᯒࢆ⾜ࡗࡓ㸬ᅗ ࡣ㸪X-04 ࠾ࡼࡧ X-05 ࡢ⏬ീゎᯒ⤖ᯝࢆ♧ࡋ࡚࠸ࡿ㸬ᅗࡼࡾ㸪ᆅ┙ኚᙧ㡿ᇦࡢᗈࡀࡾࢆࡳࡿ࡜㸪↓ᨵⰋ㸦X-04㸧ࡢሙྜ࡟ẚ࡭࡚㸪ᮺ㛫ᨵⰋ㸦X-05㸧࡟ࡼࡗ࡚ᨵⰋయࡢ๓ᚋ࡟኱ࡁ࡞୺࣭ཷാ㡿ᇦࡀᙧᡂࡉࢀࡿࡇ࡜
ࡸ㸪ᨵⰋయ┤ୗ࡟ᗏ㠃ᨭᣢ࡟ࡼࡿᆅ┙ࡢኚᙧ㡿ᇦࡀᙧᡂࡉ
ࢀࡿࡇ࡜ࡀࢃ࠿ࡿ㸬a㸧ᮺ㢌Ⲵ㔜࡜ࡢ㛵ಀᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦G-04㸪G-05㸧

500Nb㸧ᮺ㢌ኚ఩࡜ࡢ㛵ಀᅗ ㍈ຊศᢸ⋡ࡢኚ໬㸦G-04㸪G-05㸧
2000N

1000N

a㸧ᢲ㎸ࡳᮺ
- 19 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ረᛶ໬ࡍࡿࡲ࡛ᮺ㸫ᨵⰋయࡢ」ྜᵓ㐀ࡣ୍ᐃࡢᶓ᢬ᢠࢆ
ಖᣢࡍࡿ㸬↓ᨵⰋࡢሙྜ࡜␗࡞ࡾ㸪Ỉᖹ㍕Ⲵ୰ࡣᮺ㢌Ⲵ㔜ኚ఩᭤⥺ࡀᢡࢀ᭤ࡀࡾⅬ௜㏆࡟㐩ࡍࡿࡲ୍࡛ᐃࡢ㍈ຊศ;UD\&7
VFDQQLQJᢸ⋡ࢆಖᣢࡍࡿ㸬X ⥺ CT ᶍᆺᐇ㦂࡟࠾ࡅࡿ⏬ീゎᯒࡢ⤖ᯝ࠿ࡽ㸪ᨵⰋయୗ➃࠿ࡽᆅ⾲㠃࡟ྥ࠿ࡗ࡚ᙧᡂࡉࢀࡿ୺࣭
ཷാᔂቯ㠃ࡸ㸪ᨵⰋయ┤ୗ࡟ᗈࡀࡿᗏ㠃ᨭᣢ࡟ࡼࡿᆅ┙ኚᙧࡀ☜ㄆࡉࢀࡓ㸬ࡇࢀࡽࡢ▱ぢࢆࡶ࡜࡟㸪タィ࡟࠾࠸࡚ᮺ
㛫ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑຍࢆ࡝ࡢࡼ࠺࡟ホ౯ࡍࡿ࠿᳨ウࡋࡓ㸬࡞࠾㸪L2 ᆅ㟈ື࡟ᑐࡍࡿ⪏㟈タィࢆ⾜࠺ሙྜ࡟ࡣᩘ
್ゎᯒ࡟ࡼࡿ᳨ウࡀู㏵ᚲせ࡛࠶ࡿࡇ࡜࠿ࡽ㸪ࡇࡇ࡛ࡣ㟼ⓗタィࡢሙྜ࡟ࡘ࠸࡚ࡑࡢ᪉ἲࢆ᳨ウࡋࡓ㸬ᅗ ᮺ㢌Ⲵ㔜ኚ఩㛵ಀ㸦X-04㸪X-05㸧 ᅗ ࡣ㸪↓ᨵⰋࡢ⤌ᮺ࡟ࡘ࠸࡚㍈ຊࡢࡳࢆ⪃៖ࡋࡓᶓ᢬ᢠホ౯ࡢᴫせᅗࢆ♧ࡋ࡚࠸ࡿ㸬ࡇࡢ࡜ࡁ㸪ᮺ㢌࡟స⏝ࡍࡿỈᖹຊ࡟ᑐࡋ࡚㸪ᢲ㎸ࡳᮺࡢඛ➃᢬ᢠ࡜ᢲ㎸ࡳ࣭ᘬᢤ㍕Ⲵ᪉ྥࡁ୧ᮺࡢ࿘㠃᢬ᢠࡢ࿴ࡢỈᖹᡂศ࡛᢬ᢠࡋ࡚࠸ࡿ㸬ࡍ࡞ࢃࡕ㸪  ൌ ሺܴ௣ ൅ ܴ௙ ሻ  ߠ

୺ാ㡿ᇦ

(1)

ࡇࡇ࡟㸪

ཷാ㡿ᇦ

 T㸸᪤タᮺタィ᫬ࡢస⏝Ỉᖹຊ
T㸸ᮺࡢഴᩳゅ㸬ࡇࡇ࡛ࡣ㸪ᢲ㎸ࡳᮺ㸪ᘬᢤࡁᮺࡢഴᩳᢲ㎸ᮺ

ゅࡀ➼ࡋ࠸ࡶࡢ࡜ࡋ࡚࠸ࡿ㸬ᘬᢤᮺ Rp㸸ᢲ㎸ࡳᮺࡢඛ➃᢬ᢠ

X-04

 Rf㸸ᢲ㎸ࡳᮺ࠾ࡼࡧᘬᢤࡁᮺࡢ࿘㠃᢬ᢠࡢ࿴㸬㍈᪉ྥ᢬ᢠຊࡢࡳࢆ⪃៖ࡋࡓ⤌ᮺࡢタィ࡛ࡣ㸪ỈᖹⲴ㔜ኚa㸧↓ᨵⰋ㸦X-04㸧

఩ࡀቑ኱ࡍࡿ࡜࡜ࡶ࡟㍈ຊศᢸ⋡ࡀῶᑡࡍࡿࡇ࡜㸦ᅗ

㍕Ⲵ᪉ྥཧ↷㸧ࢆ⪃៖ࡋ࡚࠸࡞࠸㸬ࡇࢀࡣ㍈ຊศᢸ⋡ࡀᖖ࡟ 100%୍ᐃ࡛Ỉᖹຊ࡟᢬ᢠࡍࡿ࡜௬ᐃࡋ࡚࠸ࡿࡇ࡜ࢆព࿡ࡍࡿ㸬ࡑࡢࡓࡵ㸪ᅗa ࡛᫂ࡽ࠿࡞ࡼ࠺࡟ᮺ㛫ᨵⰋ࡟ࡼࡗ࡚
ᨵⰋయ

୺ാ㡿ᇦ

୍ᐃࡢ㧗࠸㍈ຊศᢸ⋡ࡀಖᣢࡉࢀࡿࡇ࡜ࡀᮏᐇ㦂⤖ᯝ࠿ࡽࢃ࠿ࡗ࡚ࡶ㸪ࡑࢀࢆタィ࡟࠾࠸࡚┤᥋ⓗ࡟ᶓ᢬ᢠቑຍ࡟

ཷാ㡿ᇦ⤖ࡧ௜ࡅࡿࡇ࡜ࡣ㞴ࡋ࠸㸬ࡑࡇ࡛㸪㍈᪉ྥ᢬ᢠຊࡢࡳࢆ⪃

ᗏ㠃ᨭᣢ
㡿ᇦ

ᢲ㎸ᮺ

៖ࡋࡓタィ࡟࠾࠸࡚㍈ຊศᢸ⋡ࡀᖖ࡟୍ᐃ࡛࠶ࡿ࡜࠸࠺
ᘬᢤᮺୖグࡢ๓ᥦ᮲௳ࢆ⥔ᣢࡋࡘࡘ㸪ᮺ㛫ᨵⰋ࡟ࡼࡿ⤌ᮺࡢᶓ᢬X-05

ᢠቑຍࢆホ౯ࡍࡿ᪉ἲࢆ⪃࠼ࡓ㸬ලయⓗ࡟ࡣ㸪ᮏ❶ࡢෑ㢌b㸧ᮺ㛫ᨵⰋ㸦X-05㸧

࡛ᣲࡆࡽࢀࡓ▱ぢ࡟ᇶ࡙࠸࡚㸪ᨵⰋయࡢୗ➃ࢆቃ࡟ᨵⰋయ

ᅗ X ⥺ CT ᶍᆺᐇ㦂࡟ࡼࡿᆅ┙ኚᙧ㡿ᇦࡢほᐹ㒊ศ࡜ᨵⰋయ௨῝ࡢᮺ࡛␗࡞ࡿᶓ᢬ᢠホ౯ᡭἲࢆ㐺⏝ࡍࡿ㸬ࡍ࡞ࢃࡕ㸪ᨵⰋయ㒊ศ࡟ࡣ῝࠸ᇶ♏ࡢタィᡭἲ㸦᪥ᮏ ᮺ㛫ᨵⰋࡉࢀࡓ⤌ᮺࡢᶓ᢬ᢠホ౯ᡭἲ‴༠఍㸪2007b㸧ࢆ᥼⏝ࡋ㸪ᨵⰋయ௨῝࡛ࡣᨵⰋయୗ➃࡛ࡢ㍈ຊศᢸ⋡㸦ᅗa ཧ↷㸧࡟┦ᙜࡍࡿ㍈᪉ྥຊࢆ㸪ᮏ◊✲࡛ᐇ᪋ࡋࡓྛ✀ᶍᆺᐇ㦂ࡢ⤖ᯝࡼࡾ㸪ᮺ㛫ᨵⰋࡋᨵⰋయࡢ῝ࡉศࡔࡅ▷ࡃ࡞ࡗࡓᮺࡢ㍈᪉ྥ᢬ᢠຊ࡛ཷࡅ

ࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ࡟ࡘ࠸࡚㸪௨ୗࡢ▱ぢࢆᚓࡓ㸬ᮺ㛫ᨵᣢࡘ࡜࠸࠺⪃࠼࡛࠶ࡿ㸬Ⰻࡍࡿࡇ࡜࡟ࡼࡗ࡚㸪⤌ᮺࡢᶓ᢬ᢠࡀቑຍࡋ㸪ࡇࡢ࡜ࡁᨵ ᅗ ࡣ㸪ᮺ㛫ᨵⰋࡉࢀࡓ⤌ᮺࡢᶓ᢬ᢠホ౯ࡢᴫせᅗⰋయࡣᮺ㢌࡟స⏝ࡍࡿỈᖹຊࢆྛᮺࡢ㍈᪉ྥຊ࡜ࡋ࡚ఏ

ࢆ♧ࡋ࡚࠸ࡿ㸬⪏㟈ᙉ໬ࡸᓊቨቑ㐍➼ࢆ᝿ᐃࡋ࡚ቑ኱ࡋࡓ

㐩ࡍࡿᙺ๭ࢆᯝࡓࡋ࡚࠸ࡿ㸬ኚ఩ࡀቑ኱ࡋ࡚ࡶ⤌ᮺࡢᶓ᢬Ỉᖹຊ࡟ᑐࡋ࡚㸪ᮺ㛫ᨵⰋࡉࢀࡓᮺ㸫ᨵⰋయࡢ」ྜᵓ㐀ࡀᢠࡀᛴ⃭࡟ῶᑡࡍࡿࡇ࡜ࡣ࡞ࡃ㸪ᮺࡀ㍈┤ゅ᪉ྥຊ࡟ࡼࡾ

- 20 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ᢬ᢠࡍࡿࡶࡢ࡜ࡋ࡚ࡑࡢᶓ᢬ᢠホ౯ᡭἲࢆ⪃࠼ࡿ㸬ࡇࡇ࡛㸪ᇶ♏࡜ࡳ࡞ࡋ㸪 U 7'ࡢỈᖹຊ࡟᢬ᢠ࡛ࡁࡿ࠿࡝࠺࠿ࢆ

ቑ኱ࡋࡓỈᖹຊࢆ௨ୗࡢࡼ࠺࡟⾲ࡍ㸬↷ᰝࡍࡿ㸬ࡇࡢ࡜ࡁ㸪ᅗb ࡛♧ࡉࢀࡓࡼ࠺࡟ᮺ㢌ࡢᇱ  ൌήȽỈᖹຊ࡟ࡼࡗ࡚ᅵᅽ㸪ᗏ㠃ᨭᣢຊ࠾ࡼࡧᮺ㸫ᨵⰋయࡢഃ㠃

(2)

ࡇࡇ࡟㸪

ᦶ᧿ຊࡀ୺࡜ࡋ࡚స⏝ࡍࡿ࡜⪃࠼ࡽࢀࡿ㸬 T'㸸ᨵⰋタィ᫬ࡢస⏝Ỉᖹຊ ௨ୖࡢࡼ࠺࡟㸪ᨵⰋయୗ➃ࡢ఩⨨ࢆቃ⏺࡜ࡋ࡚㸪ᨵⰋయ

 D㸸T ࡜ T'ࡢẚ㸬ࡓࡔࡋ㸪D㸼1㸬㒊ศ࡜ࡑࢀ௨῝ࡢᮺ㒊ศ࡛␗࡞ࡿᚑ᮶ࡢタィᡭἲࢆ⏝࠸ᨵⰋయ௨῝ࡢᮺ࡛ࡣ㸪ᨵⰋయୗ➃࡛ࡢ㍈ຊศᢸ⋡࡟┦ᙜࡍࡿࡇ࡜࡟ࡼࡗ࡚㸪ࡇࢀࡲ࡛ࡢ㍈᪉ྥ᢬ᢠຊࡢࡳࢆ⪃៖ࡋࡓࡿ㍈᪉ྥຊࢆ㸪ᨵⰋయࡢ῝ࡉศࡔࡅ▷ࡃ࡞ࡗࡓᮺࡢ㍈᪉ྥタィᡭἲ࡜ࡢᩚྜᛶࢆኻ࠺ࡇ࡜࡞ࡃ㸪ᮺ㛫ᨵⰋ࡟ࡼࡿᶓ᢬

᢬ᢠຊ࡛ཷࡅᣢࡘࡇ࡜࠿ࡽ㸪௨ୗࡢᘧ(3)ࢆ‶ࡓࡍᚲせࡀᢠቑຍࢆホ౯࡛ࡁࡿ࡜⪃࠼ࡽࢀࡿ㸬௬᝿ࡢ᩿㠃ࢆᑐ㇟࡜ࡋ࠶ࡿ㸬࡚㸪ᮏホ౯ᡭἲࢆ㐺⏝ࡋࡓ↷ᰝ౛ࢆ௜㘓 % ࡟♧ࡍ㸬 ሺܴ௣ᇱ ൅ ܴ௙ᇱ ሻ  ߠ ൐ Ԣ ή ɏ

(3)

ࡇࡇ࡟㸪

Ỉᖹຊ䠄T䠅
x=0

 U㸸ᨵⰋయୗ➃࡛ࡢ㍈ຊศᢸ⋡㸬0ӌUӌ1
 Rp'㸸ᨵⰋయ௨῝࡟఩⨨ࡍࡿᢲ㎸ࡳᮺࡢඛ➃᢬ᢠ

T T' ᨵⰋయ௨῝࡟఩⨨ࡍࡿᢲ㎸ࡳᮺ࠾ࡼࡧᘬᢤࡁᮺࡢ࿘
 Rf㸸

㍕ⲴⅬ

㍕Ⲵ᪉ྥ

㠃᢬ᢠࡢ࿴㸬

࿘㠃᢬ᢠ䠄Rf䠅ࡇࡇ࡛㸪ᢲ㎸ࡳᮺࡢඛ➃᢬ᢠࡣᨵⰋ๓ᚋ࡛ኚ໬ࡋ࡞࠸ࡇ࡜㸪ඛ➃᢬ᢠ䠄Rp䠅࿘㠃᢬ᢠࡢ῝ࡉ᪉ྥࡢῶᑡ⋡ࢆJ(x)㸪ᨵⰋయ῝ࡉࢆ xi ࡜ࡍࡿ࡜㸪 ܴ௣ Ԣ ൌ ܴ௣(4) ܴ௙ Ԣ ൌ ܴ௙ ή ߛሺ‫ݔ‬௜ ሻ(5)x࡜࡞ࡿ㸬ᘧ(2)㸪(4)㸪(5)ࢆᘧ(3)࡟௦ධࡋ㸪D࡟ࡘ࠸࡚ᩚ⌮ᅗ ㍈᪉ྥ᢬ᢠຊࡢࡳࢆ⪃៖ࡋࡓᶓ᢬ᢠホ౯ࡢᴫ

ࡍࡿ࡜㸪

せᅗ

 ൛ܴ௣ ൅ ܴ௙ ή ߛሺ‫ݔ‬௜ ሻൟ  ߠ ൒ ܶ ή ߙ ή ߩ Ƚ൑൛ோ೛ ାோ೑ ήఊሺ௫೔ ሻൟ ୱ୧୬ ఏ
்ήఘ

(6)

Ỉᖹຊ䠄T’䠅ᐇ㝿䛻᝿ᐃ䛥 䜜䜛ᨵⰋ⠊ᅖ(7)ᨵⰋయ῝䛥 䠄xi䠅࡜࡞ࡿ㸬ࡇࡢ࡜ࡁ㸪UࡣᨵⰋయࡢ῝ࡉ xi ࡢ㛵ᩘ࡜࡞ࡿࡇ࡜

Ỉᖹ᪉ྥ䛾
ᆅ┙཯ຊ

ࡀ⪃࠼ࡽࢀࡿ㸬㍈ຊศᢸ⋡ࡢỴᐃ࡟ࡣ㸪኱ᆺᶍᆺᐇ㦂⤖ᯝࡼࡾᨵⰋయୗ➃࡛㍈ຊศᢸ⋡ࡣ 62%⛬ᗘ㸦ᅗa ཧ↷㸧㸪ᗏ㠃ᨭᣢຊ

ࡍ࡞ࢃࡕU = 0.62㸪㐲ᚰᶍᆺᐇ㦂⤖ᯝࡼࡾᨵⰋయࡢ῝ࡉࢆ

㍕ⲴⅬ
㍕Ⲵ᪉ྥ
ᮺ㛫ᨵⰋ

࿘㠃᢬ᢠ䠄Rf ’䠅ኚ࠼ࡓᐇ㦂ࢣ࣮ࢫ㸦C-02㸪C-05㸪C-06㸧ࡢ㍈ຊศᢸ⋡ࡀඛ➃᢬ᢠ䠄Rp’䠅

55㹼75%⛬ᗘ㸦U = 0.55㹼0.75㸧࡛࠶ࡗࡓࡇ࡜ࡀཧ⪃࡜࡞ࢁ࠺㸦௜㘓 $ ཧ↷㸧㸬J(x)ࡣ㸪ᆅ┙࡟ᛂࡌ࡚㸪N ್㸦◁ᆅx┙㸧ࡸ୍㍈ᅽ⦰ᙉᗘ㸦⢓ᅵᆅ┙㸧࡜㛵㐃௜ࡅࡽࢀࡿ㸬ࡇࡢࡼ࠺࡟ xi㸪U࠾ࡼࡧJ(x)ࢆỴᐃࡋ㸪Dࡀࡼࡾ኱ࡁ࠸್࡜࡞

ᅗ ᮺ㛫ᨵⰋࡉࢀࡓ⤌ᮺࡢᶓ᢬ᢠホ౯ࡢᴫせᅗࢀࡤ㸪7࡟ᑐࡋ࡚᭱኱DಸࡢỈᖹຊ࡟ᑐࡋ࡚㸪ᨵⰋయ௨῝ ⤖ㄽ

ࡢᮺࡣ᢬ᢠ࡛ࡁࡿ࡜⪃࠼ࡽࢀࡿ㸬 ࡇࡇ࡛㸪㧗ᅽᄇᑕᨩᢾᕤἲ➼ࢆ᝿ᐃࡋ࡚ᮺ㛫ᨵⰋࡢ⌧ሙ㐺⏝ࢆ⪃࠼ࡿ࡜㸪ᮺ㛫ᆅ┙ࢆ⤌ᮺ࡟ἢࡗ࡚୕ゅᙧ≧࡟ᨵⰋ ᮏ◊✲࡛ࡣ㸪⤌ᮺࡢᶓ᢬ᢠ≉ᛶࢆᐇ㦂ⓗ࡟᫂ࡽ࠿࡟ࡍࡿ

ࡍࡿࡇ࡜ࡣᅔ㞴࡛࠶ࡿ࡜⪃࠼ࡽࢀ㸪ᅗ ୰ࡢᮺ㛫ᨵⰋ࡜࡜ࡶ࡟㸪⤌ᮺࡢᶓ᢬ᢠቑຍࢆ┠ⓗ࡜ࡋ࡚㸪ᮺ㛫ᆅ┙ࢆࢭ㒊࿘㎶ࡢⅬ⥺࡛♧ࡉࢀࡿࡼ࠺࡟㸪ᐇ㝿࡟ࡣᡤᐃࡢ῝ࡉࡲ࡛࣓ࣥࢺᅛ໬ᨵⰋࡍࡿ᪉ἲࢆ᳨ウࡋࡓ㸬㐲ᚰᶍᆺᐇ㦂㸪኱ᆺ⤌ᮺࢆそ࠺ࡼ࠺࡟▴ᙧᆺ࡟ᨵⰋࡍࡿࡶࡢ࡜ᛮࢃࢀࡿ㸬ࡇࡢᶍᆺᐇ㦂࠾ࡼࡧ X ⥺ CT ᶍᆺᐇ㦂ࢆᐇ᪋ࡋ㸪௨ୗࡢ⤖ㄽࢆሙྜ㸪ᨵⰋయࡢ῝ࡉࡀᨵⰋయࡢ᭱ᑠᖜࡼࡾᖖ࡟኱ࡁࡃ࡞ࡿ

ᚓࡓ㸬ࡇ࡜࠿ࡽ㸪῝࠸ᇶ♏࡜ࡋ࡚ࡢ᳨ウࡀྍ⬟࡛࠶ࡿ㸦᪥ᮏ

‴1㸧༢ᩳᮺ࠾ࡼࡧ⤌ᮺࡢᆅ┙཯ຊ≉ᛶ࠿ࡽ㸪Ỉᖹຊࢆཷࡅ

༠఍㸪2007b㸧㸬ࡍ࡞ࢃࡕ㸪ᨵⰋయ㒊ศ࡛ࡣ㸪ᨵⰋయࢆ῝࠸ࡿ⤌ᮺࡢᘬᢤࡁᮺ࡟㍈┤ゅ᪉ྥຊࡀⓎ⏕ࡍࡿ࡜ࡁ㸪ᘬᢤࡁ- 21 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿ᮺ࡟ᑐࡋ࡚ᮺ㛫ᆅ┙ࡀⓎ᥹ࡍࡿᆅ┙཯ຊࡣ㸪ᘬᢤࡁഃࡢ༢

⳥ụ႐᫛㸪Ᏻ㒊㈼㸪‫‮‬ὸᴋ຾㸦1999㸧㸸ࢧࣥࢻࢥࣥࣃࢡࢩ

ᩳᮺ࡟ᑐࡍࡿᆅ┙཯ຊࡼࡾᑠࡉ࠸㸬ࣙࣥࣃ࢖ࣝᨵⰋ࡟ࡼࡿᩳᮺࡢ㍈┤ゅ᪉ྥ᢬ᢠ≉ᛶࡢ

2㸧⤌ᮺࡢ๓㠃ᆅ┙㸪ᮺ㛫ᆅ┙ࡲࡓࡣ୧᪉ࢆᨵⰋࡋࡓሙྜ㸪ኚ໬㸪➨ 34 ᅇᆅ┙ᕤᏛ◊✲Ⓨ⾲఍㸪pp.1661-1662㸬

ᮺ㢌ኚ఩ࡢᢚไຠᯝ࡟ཬࡰࡍᨵⰋయࡢ㓄⨨ࡢᙳ㡪ࡣᑠࡉ໭ワᫀᶞ㸦1995㸧㸸᪂㐲ᚰᶍᆺᐇ㦂⿦⨨ࡢ㛤Ⓨ࡜◊✲ࡢ㐺࠸㸬ࡑࡢࡓࡵ㸪ᨵⰋయ✚ࡢ᭱ࡶᑠࡉ࠸ᮺ㛫ᨵⰋࡀ㸪ᮺ㢌ኚ⏝㸪఩ࡢᢚไ࡟ᑐࡋ࡚᭱ࡶ᭷ຠ࡞ᨵⰋ᪉ἲ࡛࠶ࡿ࡜ゝ࠼ࡿ㸬‴ᢏ◊㈨ᩱ㸪No.812㸬

ஂಖᾈ୍㸦1964㸧㸸ᮺࡢᶓ᢬ᢠࡢ᪂ࡋ࠸ィ⟬ἲ㸪‴ᢏ⾡◊✲ᡤሗ࿌㸪➨ 2 ᕳ 3 ྕ㸬

3㸧ᨵⰋయࡢᙉᗘ࣭๛ᛶࡢ㐪࠸ࡀᮺ㛫ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑ
ຍ࡟୚࠼ࡿᙳ㡪ࡣᑠࡉ࠸㸬♫ᅋἲே ᪥ᮏ‴༠఍㸦2007a㸧㸸 ‴ࡢ᪋タࡢᢏ⾡ୖࡢᇶ‽࣭ྠゎㄝ㸦ୗᕳ㸧㸪pp.584-639.

4㸧ᮺ㛫ᨵⰋ࡟ࡼࡿᶓ᢬ᢠቑຍࡣ㸪ᨵⰋయࡀᮺ㢌࡟స⏝ࡍࡿỈᖹⲴ㔜ࢆຠ⋡Ⰻࡃྛᮺࡢ㍈᪉ྥຊ࡜ࡋ࡚ఏ㐩ࡋ࡚࠸♫ᅋἲே ᪥ᮏ㸸 ‴ࡢ᪋タࡢᢏ⾡ୖࡢ‴༠఍㸦2007b㸧ᇶ‽࣭ྠゎㄝ㸦ୗᕳ㸧㸪pp.580-583.

ࡿࡇ࡜㸪ᮺ㸫ᨵⰋయ࿘㎶ࡢࡼࡾᗈ⠊ᅖࡢᆅ┙ࡀᶓ᢬ᢠ࡟ᐤ
୚ࡋ࡚࠸ࡿࡇ࡜࡟㉳ᅉࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿ㸬♫ᅋἲே ᪥ᮏ‴༠఍㸦2007c㸧
㸸 ‴ࡢ᪋タࡢᢏ⾡ୖࡢ ࠾ࢃࡾ࡟

℩ᕝ᐀ு㸪ෆ⏣㇏ᙪ㸪∦ᒣ⊛㞝㸦1970㸧㸸⤌ࡄ࠸ࡢタィἲᇶ‽࣭ྠゎㄝ㸦ୖᕳ㸧㸪pp.371-373.
࡟ࡘ࠸࡚㸦ࡑࡢ 2㸧, ᭤㒊ࢆࣄࣥࢪ⤖ྜࡉࢀࡓ⤌ࡄ࠸ᮏ◊✲࡛ࡣ㸪ྛ✀ᶍᆺᐇ㦂⤖ᯝ࡟ᇶ࡙࠸࡚㸪⤌ᮺࡢᶓ᢬ࡢタィἲ.

ᢠ≉ᛶ࠾ࡼࡧᶓ᢬ᢠቑຍ࡟ᐤ୚ࡍࡿຠᯝⓗ࡞ᆅ┙ᨵⰋ᪉‴ᢏ◊㈨ᩱ, No.110㸬ࢭ࣓ࣥࢺ༠఍㸦2012㸧㸸ࢭ࣓ࣥࢺ⣔ᅛ໬ᮦ࡟ࡼࡿᆅ┙ᨵⰋἲࢆ♧ࡍࡇ࡜ࡀ࡛ࡁࡓ㸬X ⥺ CT ⏬ീࡢゎᯒ࡟ࡼࡿᆅ┙ኚ࣐ࢽࣗ࢔ࣝ➨ 4 ∧㸪2012㸬ᙧ㡿ᇦࡢྍど໬࡛ࡣ㸪ᶍᆺᆅ┙ࡢࢧ࢖ࢬࡀᑠࡉ࠸ࡓࡵ㸪ᛂᯇᮧ⪽㸪Ỉ㇂ᓫு㸪⠛Ọ㱟Ẏ㸦2015㸧㸸࣐࢖ࢡࣟࣇ࢛࣮࢝

ຊ≧ែ࡟㛵ࡋ࡚ᐇᆅ┙࡜ࡢ┦㐪ࡀ࠶ࡿࡶࡢࡢ㸪ᮺ㸫ᨵⰋయࢫ X ⥺ CT ࢫ࢟ࣕࢼࢆ⏝࠸ࡓᆅ┙ᕤᏛ࡬ࡢ᪂ࡓ࡞࢔

࿘㎶࡟࡝ࡢࡼ࠺࡞ᆅ┙᢬ᢠࡀⓎ᥹ࡉࢀᚓࡿ࠿ࢆ᳨ウࡍࡿࣉ࣮ࣟࢳ㸪ୖ࡛㔜せ࡞⿵ຓ㈨ᩱ࡜࡞ࢁ࠺㸬✵◊㈨ᩱ㸪No.1313㸬᳃ᕝ჆அ㸪⳥ụ႐᫛㸪Ỉ㇂ᓫு㸦2011㸧㸸᪤Ꮡ▮ᯈቨ࡟ᑐ ᮏሗ࿌࡛ࡣ㸪ࡇࢀࡲ࡛ᗈࡃ⏝࠸ࡽࢀ࡚ࡁࡓ㍈᪉ྥ᢬ᢠຊ

ࡍࡿ᥍࠼ᕤቑタࡢ⿵ᙉຠᯝ࡜ࡑࡢホ౯ἲࡢ㛤Ⓨ㸪ࡢࡳࢆ⪃៖ࡋࡓ⤌ᮺࡢタィᡭἲ㸪ᴫᛕࢆ⥔ᣢࡋࡘࡘ㸪ᮏ◊✵◊ሗ࿌㸪➨ 50 ᕳ㸪➨ 4 ྕ㸪pp.107-131㸬✲࡛ᚓࡽࢀࡓ▱ぢࢆࡶ࡜࡟㸪タィ࡟࠾࠸࡚ᮺ㛫ᨵⰋ࡟ࡼࡿ

ᶓᒣᖾ‶㸦1963㸧㸸㗰ᮺࡢタィ࡜᪋ᕤ, ᒣᾏᇽ, pp.193-197㸬ᶓ᢬ᢠቑຍࢆホ౯ࡍࡿࡓࡵࡢᇶᮏⓗ࡞⪃࠼᪉ࢆ♧ࡋࡓ㸬ᮺ

Ferreira, T. and Rasband, W. 㸦2012㸧
㸸ImageJ User Guide. U.S.

㛫ᨵⰋࡢᐇᆅ┙࡬ࡢ㐺⏝࡟㝿ࡋ࡚ࡣ㸪ᆅ㟈᫬ᣲືࡢゎ᫂㸪National Institutes of Health, Bethesda, Maryland, USA,᪤タᮺࡢ⪏ຊホ౯㸪᪋ᕤ᪉ἲ➼㸪ࡉࡽ࡟ᐇ㝿ⓗ࡞ḟ࡞ࡿㄢ

http://imagej.nih.gov/ij/.

㢟ࡀ᝿ᐃࡉࢀࡿࡀ㸪ᮏᡭἲ࡟ࡼࡗ࡚ᨵⰋ᫬ࡢึᮇ᩿㠃ࢆྜ

Sawaguchi, M.㸦1970㸧㸸Experimental investigation on the⌮ⓗ࡟Ỵᐃࡍࡿࡇ࡜ࡀ࡛ࡁ㸪᪂ࡓ࡞ㄢ㢟࡬ࡢྲྀࡾ⤌ࡳࡢ➨

horizontal resistance of coupled piles. Report of Port and୍Ṍ࡟࡞ࢀࡤᖾ࠸࡛࠶ࡿ㸬

Harbour Technical Institute, Vol.9, No.1㸬
Terauchi, K., Sato, T., Sawaguchi, M., Kikuchi, Y., Kitazawa, S.
㸦2017 ᖺ 4 ᭶ 25 ᪥ཷ௜㸧and Imai, M.㸦2000㸧㸸Effect of the lateral resistance of
coupled piles on the field loading test, Proceedings ofㅰ㎡Coastal 㛗ᒸ⛉Ꮫᢏ⾡኱Ꮫ࠿ࡽࡢᐇ⩦⏕࡛࠶ࡗࡓᱵἑᆂభẶ㸪⊦

pp.375-380.

GeotechnicalEngineering⊁㈗ᐶẶ࡟ࡣ㸪ྛ✀ᶍᆺᐇ㦂࡟ᑾຊ㡬࠸ࡓ㸬ᮎ➹࡞ࡀࡽググྕ⾲ࡋ࡚ㅰពࢆ⾲ࡋࡲࡍ㸬

Us㸸ᅵ⢏Ꮚᐦᗘ㸦kg/m3㸧
emax㸸᭱኱㛫㝽ẚཧ⪃ᩥ⊩emin㸸᭱ᑠ㛫㝽ẚ㟷ᮌ⩏඾㸦1970㸧㸸Ỉᖹຊࢆཷࡅࡿᩳ⤌ࢢ࢖ࡢタィ࡟ࡘ࠸wL㸸ᾮᛶ㝈⏺㸦%㸧

࡚㸪ᅵ࡜ᇶ♏, Vol.18, No.8, pp.27-32㸬

wp㸸ረᛶ㝈⏺㸦%㸧

ሷࣅᕤᴗ࣭⎔ቃ༠఍㸦 2017㸧㸸ሷࣅᶞ⬡ࡢᇶᮏ≀ᛶ㸪T㸸᪤タᮺタィ᫬ࡢస⏝Ỉᖹຊ㸦N㸧

http://www.vec.gr.jp/enbi/enbi2_2.html㸬

T'㸸ᨵⰋタィ᫬ࡢస⏝Ỉᖹຊ㸦N㸧

- 22 -

inPractice,ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ

T㸸ᮺࡢഴᩳゅ㸦ᗘ㸧ศゎࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠸ࡓࡵ㸪ྛᮺࡢ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ

Rp㸸ᢲ㎸ࡳᮺࡢඛ➃᢬ᢠ㸦N㸧

ࢆ 1 ᅇᚤศࡋ㸪῝ࡉ 0.075m ࡟࠾ࡅࡿࡏࢇ᩿ຊࢆࡑࢀࡒࢀ

Rf㸸ᢲ㎸ࡳᮺ࠾ࡼࡧᘬᢤࡁᮺࡢ࿘㠃᢬ᢠࡢ࿴㸦N㸧ࡢ㍈┤ゅ᪉ྥຊ࡜ࡋ࡚⏝࠸ࡓ㸬ලయⓗ࡟ࡣ㸪ᮺ㢌ኚ఩ࡀ 5㸪

Rp'㸸ᨵⰋయୗ➃௨῝ࡢᢲ㎸ࡳᮺࡢඛ➃᢬ᢠ㸦N㸧

10㸪15㸪20㸪25mm ࡟㐩ࡋࡓ᫬Ⅼ࡛ࡢ᭤ࡆ࣮࣓ࣔࣥࢺศᕸ

Rf㸸' ᨵⰋయୗ➃௨῝ࡢᢲ㎸ࡳᮺ࠾ࡼࡧᘬᢤࡁᮺࡢ࿘㠃᢬ᢠ

ࢆ 3 ḟࢫࣉࣛ࢖ࣥ࡟ࡼࡾከ㡯ᘧ⿵㛫ࢆࡋࡓᚋ㸪ᚤศࢆ⾜࠸㸪ࡢ࿴㸦N㸧ࡏࢇ᩿ຊࢆồࡵࡓ㸬୍᪉㸪G-01 ࠿ࡽ G-04 ࡢ඲ࢣ࣮ࢫ࡟࠾

J(x)㸸ᮺ㛫ᨵⰋ࡟ࡼࡾᮺ㛗ࡀ▷ࡃ࡞ࡿࡇ࡜࡟ࡼࡿ࿘㠃᢬ᢠ࠸࡚㸪᭤ࡆ࣮࣓ࣔࣥࢺศᕸ࡟ᑐࡋ࡚ྎᙧ๎࡟ࡼࡿᩘ್✚ศࡢῶᑡ࡟㛵ࡍࡿ㛵ᩘ

ࢆ 2 ᅇ⾜ࡗ࡚ࡓࢃࡳศᕸࢆồࡵ㸪῝ࡉ 0.075m ࡟࠾ࡅࡿ㍈xi㸸ᨵⰋయ῝ࡉ㸦m㸧┤ゅ᪉ྥኚ఩ࢆồࡵࡓ㸬௨ୖࡢ᪉ἲ࡟ࡼࡾồࡵࡓྛᐇ㦂ࢣ࣮ࢫࡢ῝ࡉ 0.075m ࡟࠾ࡅࡿ㍈┤ゅ᪉ྥຊ࡜㍈┤ゅ᪉ྥኚx㸸ᆅ┙῝ࡉ㸦m㸧
k s㸸

3.5

◊᪉ᘧ㸦S ᆺᆅ┙㸧ࡢᆅ┙཯ຊಀᩘ㸦kN/m 㸧఩ࡢ㛵ಀࡀᅗ $ ࡛࠶ࡿ㸬ᅗࡣ୧ᑐᩘ㍈࡛♧ࡉࢀ࡚࠸ࡿ㸬ᅗ࡟ࡣ㸪ᘧ㸦A.1㸧࠿ࡽồࡵࡽࢀࡿᆅ┙཯ຊಀᩘࡀ୍ᐃ

௜㘓$

ࡢ᫬ࡢ

◊᪉ᘧ㸦S ᆺᆅ┙㸧࡛᥎ᐃࡉࢀࡿᆅ⾲㠃࡟࠾ࡅࡿ㍈┤ゅ᪉ྥⲴ㔜࡜㍈┤ゅ᪉ྥኚ఩ࡢ㛵ಀࢆ♧ࡋࡓ㸦᪥ᮏ$ ኱ᆺᶍᆺᐇ㦂࡟࠾ࡅࡿᆅ┙཯ຊಀᩘ NV ࡢィ⟬‴༠఍㸪2007a㸧㸬ᅗࡼࡾ㸪ᆅ┙཯ຊಀᩘ୍ᐃࡢ⥺⩌࡟ẚ࡭ ኱ᆺᶍᆺᐇ㦂࡛ᐇ᪋ࡋࡓᐇ㦂ࢣ࣮ࢫ G-01 ࠿ࡽ G-04 ࡟࡚㸪ྛᐇ㦂ࢣ࣮ࢫ࡛ࡸࡸ⥺ࡢഴࡁࡀ኱ࡁ࠸ࡓࡵ㸪㍈┤ゅ᪉ࡘ࠸࡚ᆅ┙཯ຊಀᩘ ks ࢆồࡵࡓ㸬኱ᆺᶍᆺᐇ㦂࡛ࡣ㸪ᶍྥኚ఩ࡀ 0.006m ࡟࠾ࡅࡿᆅ┙཯ຊಀᩘࢆぢࡿ࡜㸪༢ᮺᆺᆅ┙ࡢᆒ㉁ᛶࡸᆅ┙ࡢ✀ู㸦◊᪉ᘧ࡟࠾ࡅࡿ S ᆺࡲ

㸦G-01㸧࡛ 11000kN/m3 㸪༢ᩳᮺࡢᢲ㎸ࡳഃ㸦G-02㸧࡛ࡓࡣ C ᆺᆅ┙㸧ࢆㄪ࡭ࡿࡓࡵ࡟㸪ᆅ┙స〇ᚋ࡟⡆᫆ືⓗ

6000kN/m3㸪༢ᩳᮺࡢᘬᢤࡁഃ㸦G-03㸧࡛ 17000kN/m3㸪

ࢥ࣮ࣥ㈏ධヨ㦂ࢆᶍᆺᆅ┙୰ 4 ࠿ᡤ࡛ᐇ᪋ࡋࡓ㸬ᅗ $⤌ᮺࡢᢲ㎸ࡳഃ㸦G-04㸪push-in㸧࡛ 7000kN/m3㸪⤌ᮺࡢᘬࡣ㸪⡆᫆ືⓗࢥ࣮ࣥ㈏ධヨ㦂ࡢ⤖ᯝࢆ♧ࡋ࡚࠸ࡿ㸬⡆᫆ື

ᢤࡁഃ㸦G-04㸪pull--out㸧࡛ 5000kN/m3 ࡜࡞ࡗ࡚࠸ࡿ㸬ྛⓗࢥ࣮ࣥ㈏ධヨ㦂࡛ࡣ㸪㔜㗽 5kg ࢆ㧗ࡉ 0.5m ࠿ࡽⴠୗࡉ

ࢣ࣮ࢫ࡟࠾ࡅࡿࡇࢀࡽࡢᆅ┙཯ຊಀᩘࢆ⏝࠸࡚ᅗ ࡟ࡏࡓ࡜ࡁ㸪ඛ➃ࡢᑠᆺࢥ࣮ࣥࢆ 0.1m ㈏ධࡍࡿࡢ࡟ᚲせ࡞♧ࡉࢀࡿྛ್ࢆồࡵࡓ㸬ⴠୗᅇᩘ Nd ࢆㄪ࡭ࡿ㸬ࡇࡇ࡛ᅗ ࡼࡾ᭤ࡆ࣮࣓ࣔࣥ

ସ

଺

ଵ଴

ࢺ➨୍ࢮࣟⅬࡣ඲ࢣ࣮ࢫ࡛῝ࡃ࡜ࡶ 0.8m ⛬ᗘ࡛࠶ࡿࡇ࡜

‫ݕ‬଴ ൌ ͲǤ͵ͺͻͷͺ െ ଻ ‫ ܫܧ‬െ ଻ ‫݇ܤ‬௦ ൅ ଻ ܶࡀࢃ࠿ࡿ㸬ࡇࡢ࡜ࡁ᭤ࡆ࣮࣓ࣔࣥࢺ➨୍ࢮࣟⅬ࡟ᑐࡋ࡚ࡇࡇ࡟㸪

0.5㹼1.0 ಸࡢ῝ࡉࡢ Nd ࡟╔┠ࡍࡿ࡜㸪῝ࡉ᪉ྥ࡟࡯ࡰ┤y0㸸ᆅ⾲㠃࡟࠾ࡅࡿᮺࡢ㍈┤ゅ᪉ྥኚ఩㸦m㸧⥺ⓗ࡟ኚ໬ࡋ࡚࠸ࡿࡇ࡜࠿ࡽ㸪௒ᅇస〇ࡋࡓᶍᆺᆅ┙ࡀ୍

EI㸸᭤ࡆ๛ᛶ㸦kNm2㸧

ᵝ࡞◁ᆅ┙࡛࠶ࡾ

B㸸ᮺᖜ㸦m㸧◊᪉ᘧࡢ S ᆺᆅ┙࡟ศ㢮ࡉࢀࡿ࡜௬

ks㸸S ᆺᆅ┙ࢆ௬ᐃࡋࡓ࡜ࡁࡢᆅ┙཯ຊಀᩘ㸦kN/m3.5㸧ᐃࡋࡓ㸬T㸸ᆅ⾲㠃࡟࠾ࡅࡿ㍈┤ゅ᪉ྥຊ㸦kN㸧.

ᮏᐇ㦂࡛ࡣ㸪ᅗ $ ࡟♧ࡉࢀࡿᮺ㢌἞ල࡜ᶍᆺᮺࡢ๛ᛶ
ࡀ␗࡞ࡿࡓࡵ㸪௒ᅇ (A.1)ᐃࡋࡓᮺ㢌ࡢⲴ㔜࡜ኚ఩ࡢ㛵ಀࢆࡑ
0ࡢࡲࡲ⏝࠸ࡿ࡜ᆅ┙཯ຊಀᩘࢆồࡵࡿࡇ࡜ࡀ࡛ࡁ࡞࠸㸬ࡑ 
No.1-1 
No.1-2

No.2-1
No.2-2
0.2ࡢࡓࡵ㸪࡯ࡰᆅ⾲㠃࡟఩⨨ࡍࡿᆅ୰ࡢ῝ࡉ 0.075m ࡟࠾ࡅ

0.4

ࡿ㍈┤ゅ᪉ྥຊ࡜㍈┤ゅ᪉ྥኚ఩ࡢ㛵ಀ࠿ࡽᆅ┙཯ຊಀᩘࢆィ⟬ࡋࡓ㸬ࡇࡢ࡜ࡁ㸪G-01 ࠿ࡽ G-04 ࡢ 4 ࢣ࣮ࢫ࡟ࡘ
࠸࡚௨ୗ࡟♧ࡍ᪉ἲ࡛㍈┤ゅ᪉ྥຊ࡜㍈┤ゅ᪉ྥኚ఩ࢆ


0.6

0.8

ồࡵࡓ㸬

1

 ༢ᮺ G-01 ࡛ࡣ㸪ᮺ㢌Ⲵ㔜ࢆࡑࡢࡲࡲ῝ࡉ 0.075m ࡟࠾1.2ࡅࡿ㍈┤ゅ᪉ྥຊ࡜ࡋ࡚⏝࠸ࡓ㸬༢ᩳᮺ G-02 ࠾ࡼࡧ G-03
࡛ࡣ㸪ᮺ㢌Ⲵ㔜ࢆᮺࡢഴᩳゅ㸦15 ᗘ㸧࡟ᛂࡌ࡚㍈┤ゅ᪉

1.4


ྥ࡟ศゎࡋࡓⲴ㔜್ࢆ⏝࠸ࡓ㸬ࡇࡇ࡛ 0.075m ࡢᆅ┙ᒙཌ


0


2


4


6


 12
 14

8 10

Nd

࡟┦ᙜࡍࡿᆅ┙཯ຊ࠾ࡼࡧᮺ㢌ࡢኚ఩࡟ࡼࡿ㍈┤ゅ᪉ྥࡢኚ໬ࡣ↓どࡋࡓ㸬⤌ᮺࢣ࣮ࢫ㸦G-04㸧࡛ࡣ㸪ᮺ㢌Ⲵ㔜ᅗ $ ⡆᫆ືⓗࢥ࣮ࣥ㈏ධヨ㦂ࡢ⤖ᯝ㸪ᶓ㍈㸸100mm

ࢆᢲ㎸ࡳᮺ࠾ࡼࡧᘬᢤࡁᮺࡢࡑࢀࡒࢀࡢ㍈┤ゅ᪉ྥຊ࡟㈏ධࡍࡿࡓࡵ࡟ᚲせ࡞ⴠୗᅇᩘ㸬- 23 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿

㍕Ⲵ᪉ྥ
ᆅୖ䛾
ᮺ㢌἞ල
ᆅୖ䛾
ᮺ㢌἞ල

๤㞳
䠄ᢲ㎸䜏ഃୖ㒊䠅
ᆅ୰䛾
ᶍᆺᮺ

ᆅ୰䛾
ᶍᆺᮺ

๤㞳
䠄ᘬᢤ䛝ഃୗ㒊䠅

a㸧༢ᮺ

b㸧⤌ᮺ

ᨵⰋయ
ୗ➃

ᅗ $ ᶍᆺᮺࡢᮺ㢌἞ල(ks=x103 kN/m3.5)

ks=17

ᅗ $ X ⥺ CT ࢫ࢟ࣕࣥ࡟ࡼࡿỈᖹ㍕Ⲵᚋࡢᮺ㸫ᨵⰋయ

ks=11
1000

ࡢほᐹ㸦G-05㸧

ks=7$ ᨵⰋయࡢ῝ࡉ࡜㍈ຊศᢸ⋡ࡢ㛵ಀ ᅗ $ ࡣ㸪㐲ᚰᶍᆺᐇ㦂࠾ࡼࡧ኱ᆺᶍᆺᐇ㦂࡟ࡼࡗ࡚ᐇ

ks=6
ks=5
100

(0.006m)
0.001

᪋ࡉࢀࡓᨵⰋయࡢ῝ࡉࡢ␗࡞ࡿᐇ㦂ࢣ࣮ࢫ㸦C-02㸪C-05㸪

G-01
G-02
G-03
G-04, push-in
G-04, pull-out

C-06 ࠾ࡼࡧ G-05㸧ࡢᨵⰋయୗ➃௜㏆࡛ࡢ㍈ຊศᢸ⋡࡜ᨵⰋయࡢ῝ࡉࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬ࡓࡔࡋ㸪ᨵⰋయࡢ῝ࡉࡣྛᐇ㦂ࡢ↓ᨵⰋࢣ࣮ࢫ㸦C-01 ࠾ࡼࡧ G-04㸧࡛ࡢᢲ㎸ࡳᮺ

0.01
Displacement vertical to pile at 0.075m, mࡢ᭱኱᭤ࡆ࣮࣓ࣔࣥࢺ῝ࡉ࡛ᶆ‽໬ࡉࢀࡓ್ࢆ⏝࠸࡚࠸ᅗ $ ᆅ┙῝ࡉ 0.075m ࡟࠾ࡅࡿ㍈┤ゅ᪉ྥࡢⲴ㔜࡜ࡿ㸬ࡲࡓ㸪㍈ຊศᢸ⋡࡟ࡣ㸪㍕Ⲵ୰࡟㍈ຊศᢸ⋡ࡀ࡯ࡰ୍ኚ఩ࡢ㛵ಀ㸬

ᐃ࡜࡞ࡗࡓ༊㛫ࡢᖹᆒⓗ࡞್ࢆ⏝࠸ࡓ㸬$ ኱ᆺᶍᆺᐇ㦂ࡢᮺ㛫ᨵⰋࢣ࣮ࢫ㸦*㸧࡟࠾ࡅࡿᨵⰋయࡢ◚ቯ≧ἣࡢほᐹC-06 ኱ᆺᶍᆺᐇ㦂࡛ᐇ᪋ࡋࡓᮺ㛫ᨵⰋࢣ࣮ࢫ㸦G-05㸧ࡢỈ

C-05

ᖹ㍕Ⲵᐇ㦂ᚋ㸪ᆅ┙ෆ࠿ࡽᶍᆺᮺࢆྲྀࡾฟࡋ㸪ᨵⰋయࡢୗ➃ࡢ῝ࡉ࡛ᶍᆺᮺࢆษ᩿ࡋ㸪ᨵⰋయࡢ◚ቯ≧ἣࢆ X ⥺ CT

G-05

C-02

ࢫ࢟ࣕࣥ࡟ࡼࡾほᐹࡋࡓ㸬ᅗ $ ࡣ㸪ᮺ㸫ᨵⰋయࡢ㖄┤᩿㠃ࢆ♧ࡋ࡚࠸ࡿ㸬ᢲ㎸ࡳഃࡢୖ㒊࠾ࡼࡧᘬᢤࡁഃࡢୗ㒊࡛㸪ᨵⰋయࡀᮺ࠿ࡽ๤㞳ࡋ࡚࠸ࡿᵝᏊࡀ☜ㄆࡉࢀࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ᮺ࠿ࡽᨵⰋయࡀ᏶඲࡟๤㞳ࡋ࡚㸪⬺ⴠࡍࡿࡇ࡜ࡣ࡞
࠿ࡗࡓ㸬ࡲࡓ㸪ᨵⰋయࡢୖ㒊࡟ࡣỈᖹ᪉ྥ࡟ࡦࡧ๭ࢀࡀⓎ⏕ࡋ࡚࠸ࡿᵝᏊࡀࢃ࠿ࡿ㸬ᮺ㢌௜㏆࡟㐣኱࡞㍈┤ゅ᪉ྥຊࡀⓎ⏕ࡍࡿࡇ࡜࡟ࡼࡗ࡚㸪ᨵⰋయࡀ᭤ࡆ◚ቯࢆᘬࡁ㉳ࡇࡋᅗ $ ᨵⰋయࡢ῝ࡉ࡜㍈ຊศᢸ⋡ࡢ㛵ಀ㸪ᶓ㍈ࡣ᭱኱ࡓ࡜᥎ᐹࡉࢀࡿ㸬ࡋ࠿ࡋ࡞ࡀࡽ㸪ࡇࡢࡼ࠺࡟ᨵⰋయࡀ◚ቯ᭤ࡆ࣮࣓ࣔࣥࢺ῝ࡉ࡛ᶆ‽໬ࡋ࡚ࡶᶓ᢬ᢠࡣῶᑡࡋ࡞࠸㸦ᅗ ཧ↷㸧㸬- 24 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ௜㘓%ࡼࡧཷືᅵᅽ࡜ࡢẚ㍑࡟ࡼࡗ࡚ㄪ࡭ࡽࢀࡿ㸦᪥ᮏ‴༠఍㸪2007b㸧㸬ලయⓗ࡟ࡣ㸪௨ୗࡢᘧ࡟ࡼࡗ࡚↷ᰝࡉࢀࡿ㸬 㸬ᮺ㛫ᨵⰋࡉࢀࡓ⤌ᮺࡢᶓ᢬ᢠホ౯ᡭἲ࡛♧ࡉࢀࡓᡭ ܲ௣௞ ൒ ݉ ή ‫݌‬ଵ                㸦B.4㸧

ἲ࡟ᇶ࡙࠸࡚㸪௬᝿ࡢ᩿㠃࡟ࡘ࠸࡚↷ᰝࢆ⾜ࡗࡓ㸬ᮏ↷ᰝࡇࡇ࡟㸪౛࡛ࡣ㸪௬᝿ࡢ᩿㠃ࢆ⏝࠸࡚↷ᰝࡢὶࢀࡸタィ᫬ࡢ⪃࠼᪉

 Ppk㸸῝ࡉ hmax ࡟࠾ࡅࡿཷാᅵᅽࡢ≉ᛶ್㸦kN/m2㸧㸬ࡓࡢ౛ࢆ♧ࡍࡇ࡜ࢆ┠ⓗ࡜ࡋ࡚࠾ࡾ㸪⡆༢ࡢࡓࡵ㒊ศಀᩘࢆࡔࡋ㸪hmax ࡣỈᖹᆅ┙཯ຊࡀ᭱኱࡜࡞ࡿ῝ࡉ㸦m㸧඲࡚ 1.0 ࡜ࡋ࡚ィ⟬ࢆ⾜ࡗࡓ㸬ᅗ % ࡣᮏ᩿㠃ࡢᴫ␎ᅗࢆ

 p1㸸ᇶ♏ഃ㠃࡟స⏝ࡍࡿỈᖹᆅ┙཯ຊࡢ᭱኱್㸦kN/m2㸧

♧ࡋ࡚࠸ࡿ㸬⾲ % ࡣ㸪ᮏ᩿㠃ࡢ᮲௳୍ぴ࡛࠶ࡿ㸬ᮏ᩿㠃 m㸸ㄪᩚಀᩘ㸬

࡛ࡣ㸪N ್ 15㸪ᒙཌ 30m ࡢᆒ㉁࡞㣬࿴◁ᆅ┙࡟⤌ᮺࡀタ

ᅗ % ࡣ㸪ᨵⰋయࡢ῝ࡉ࡜ᘧ㸦B.4㸧ࡢ୧㎶ࡢẚ㸦mp1/Ppk㸧⨨ࡉࢀ࡚࠸ࡿ㸬ᮺୗ➃ࡢ῝ࡉ 30m ࡼࡾ௨῝ࡣ N ್ 50 ࡢᨭࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬⾲ % ࡣ㸪ᘧ㸦B.4㸧ࡢྛ್ࢆィ⟬ᣢᆅ┙࡜ࡋࡓ㸬ࡇࡢ࡜ࡁ㸪㍈᪉ྥ᢬ᢠຊࡢࡳࢆ⪃៖ࡋࡓタࡍࡿࡓࡵ࡟⏝࠸ࡓࣃ࣓࣮ࣛࢱࡢ୍ぴ࡛࠶ࡿ㸬Ppk ࠾ࡼࡧ p1

ィᡭἲࡢሙྜ㸪⾲ % ࡟♧ࡉࢀࡿㅖඖࡢᮺ࡛ࡣ⣙ 2000kNࡢィ⟬᪉ἲࡣ㸪᪥ᮏ‴༠఍㸦2007c㸧࠾ࡼࡧ᪥ᮏ

‴༠ࡢỈᖹຊ࡟᢬ᢠࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬ࡇࡇ࡛㸪Ỉᖹຊࡣᢲ㎸఍㸦2007b㸧ࢆࡑࢀࡒࢀཧ↷ࡉࢀࡓ࠸㸬mp1/Ppk ࡀ 1.0 ࢆୗࡳᮺࡢඛ➃᢬ᢠຊ㸦Rp㸧࠾ࡼࡧ୧ᮺࡢ࿘㠃᢬ᢠຊ㸦Rf㸧ࡢᅇࡿ࡜ࡁᘧ㸦B.4㸧ࢆ‶ࡓࡍࡇ࡜࠿ࡽ㸪ᨵⰋయ㒊ศࡢ↷ᰝ࿴ࡢỈᖹᡂศ࡛࠶ࡾ㸪Rp ࠾ࡼࡧ Rf ࡣ௨ୗࡢᘧ࡛ィ⟬ࡉࢀ࡟ࡼࡾᨵⰋయୗ➃఩⨨ࡣ῝ࡉ 10m ௨ୗ࡛࠶ࡿᚲせࡀ࠶ࡿࡿ㸦᪥ᮏࡇ࡜ࡀࢃ࠿ࡿ㸬๓㏙ࡢ㏻ࡾ㸪ᨵⰋయ௨῝ࡢᮺࡢ㍈᪉ྥ᢬ᢠ‴༠఍㸪2007a㸧㸬 ܴ௣ ൌ ͵ͲͲ ή ܰ ή ‫ܣ‬௣

㸦B.1㸧

ຊࡢ↷ᰝ࡛ࡣ㸪ᨵⰋయୗ➃఩⨨ࡀ 12.5m ௨ୖ࡛࠶ࡗࡓࡇ ܴ௙ ൌ ʹ ή ܰଶ ή ‫ܣ‬௦

㸦B.2㸧

࡜࠿ࡽ㸪ᨵⰋయ㒊ศࡢ↷ᰝ࡜ేࡏ࡚㸪ᨵⰋయୗ➃఩⨨ࡣ㸪 ܰൌேభ ାேమ

10㹼12.5m ࡜ࡍࡿᚲせࡀ࠶ࡿ㸬ࡇࡇ࡛㸪ᨵⰋయᒙཌࡀᑠࡉ

㸦B.3㸧

ଶ

࠸࡯࡝㸪ᆅ┙ᨵⰋࡢࢥࢫࢺࢆᢚ࠼ࡽࢀࡿࡇ࡜࠿ࡽ㸪ᨵⰋయࡇࡇ࡟㸪ୗ➃఩⨨ࢆ 10m ࡜Ỵᐃࡍࡿࡇ࡜ࡀ࡛ࡁࡿ㸬 Ap㸸ᮺࡢ᭷ຠ᩿㠃✚㸦m 㸧
2௒ᅇࡢ↷ᰝ౛࡛ࡣ㸪ᮺ㢌࡟Ỉᖹຊࡢࡳࢆస⏝ࡉࡏࡓࡀ㸪 As㸸࿘㠃᢬ᢠࡀാࡃ㒊ศࡢᮺࡢ࿘㠃✚㸦m2㸧Ỉᖹ㟈ᗘࡸࢡ࣮ࣞࣥⲴ㔜࡟ࡼࡿ㖄┤ຊ➼ࢆస⏝ࡉࡏࡿሙ N1㸸ᮺඛ➃఩⨨࡛ࡢ N ್ྜ࡟ࡶྠᵝࡢ↷ᰝࡀྍ⬟࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿ㸬 N2㸸ᮺඛ➃ࡼࡾୖ᪉࡬ᮺ┤ᚄࡢ 4 ಸࡲ࡛ࡢ⠊ᅖࡢ N ್㸬ࡇࡇ࡛㸪⪏㟈ᙉ໬ࡸᓊቨቑ῝➼ࢆ⌮⏤࡟㸪౛࠼ࡤ 1.2 ಸ࡟ቑ኱ࡍࡿỈᖹຊ࡟᢬ᢠࡍࡿࡓࡵ㸪ᮺ㛫ᨵⰋࢆᐇ᪋ࡍࡿ࡜ࡋ

Ỉᖹຊ䠄T’䠅ᆅ⾲㠃0m࡚㸪⤌ᮺ࠾ࡼࡧᨵⰋయ࡟ࡑࢀࡒࢀᚲせ࡞↷ᰝࢆ⾜࠺㸬ቑ኱ࡋࡓỈᖹຊࡣ㸪2400kN㸦=2000kN1.2㸧࡛࠶ࡿ㸬ࡓࡔࡋ㸪
ᅗ % ࡢⅬ⥺࡛♧ࡉࢀࡿࡼ࠺࡟ᮺ㢌ࢆྵࡴ⤌ᮺࡢୖ㒊ࢆ

N = 15
ᆒ㉁◁ᆅ┙

ᨵⰋయ῝䛥
䠄xi䠅

▴ᙧᆺ࡟ᨵⰋࡍࡿࡶࡢ࡜ࡍࡿ㸬 ᅗ % ࡣ㸪ᨵⰋయࡢ῝ࡉ࡜ᨵⰋయ௨῝ࡢᮺࡀⓎ᥹ࡍࡿ㍈᪉ྥ᢬ᢠຊࡢ㛵ಀࢆ♧ࡋ࡚࠸ࡿ㸬ᨵⰋయࡢ῝ࡉࡀቑ኱ࡍࡿ
࡜㸪࿘㠃᢬ᢠຊࢆⓎ᥹࡛ࡁࡿᮺ࿘㠃✚ࡀῶᑡࡍࡿࡓࡵ㸪ᨵ

ᮺୗ➃῝䛥
30m

Ⰻయ௨῝ࡢᮺࡀⓎ᥹࡛ࡁࡿ㍈᪉ྥ᢬ᢠຊࡣῶᑡࡍࡿ㸬ࡇࡇ

N = 50ᨭᣢᆅ┙࡛㸪㍈ຊศᢸ⋡ࢆ 0.55㸪ࡍ࡞ࢃࡕᨵⰋయ௨῝ࡢᮺࡀ㈇ᢸࡍ
ࡿỈᖹຊࡀ඲యࡢỈᖹຊࡢ 55%࡜௬ᐃࡍࡿ࡜㸪1320kNx㸦=2400kN0.55㸧ࡢỈᖹຊ࡟ᑐࡋ࡚ᨵⰋయ௨῝ࡢᮺࡀ᢬ᅗ % ௬᝿᩿㠃ࡢᴫ␎ᅗᢠࡋ࡞ࡅࢀࡤ࡞ࡽ࡞࠸㸬ࡇࡢ࡜ࡁ㸪1320kN ࡢỈᖹຊ࡟ᑐࡋ࡚༑ศ࡞ᮺࡢ㍈᪉ྥ᢬ᢠຊࢆᚓࡿࡓࡵ࡟ࡣ㸪ᅗ % ࡼࡾᨵⰋయୗ➃ࡀ⣙ 12.5m ࡼࡾὸ࠸఩⨨࡜࡞ࡿᚲせࡀ࠶ࡿ㸬 ḟ࡟㸪ᮺ㛫ᨵⰋࢆ῝࠸ᇶ♏࡜௬ᐃࡋ࡚ᛶ⬟↷ᰝࢆ⾜࠺㸬῝࠸ᇶ♏ࡢᛶ⬟↷ᰝࡣ㸪῝࠸ᇶ♏࡟㖄┤ຊࡸỈᖹຊࡀస⏝ࡍࡿࡇ࡜࡟ࡼࡗ࡚⏕ࡌࡿᆅ┙཯ຊ࡜㸪ᆅ┙ࡢ㖄┤ᨭᣢຊ࠾- 25 -

ᯇᮧ ⪽࣭ᯇཎ ᐀ఙ࣭⸨஭ ឡᙪ࣭Ỉ㇂ ᓫு࣭᳃ᕝ ჆அ࣭బ⸨ ┿⾲ % ௬᝿᩿㠃ࡢᮺ㸪ᆅ┙㸪Ⲵ㔜ࡢ᮲௳୍ぴ
ࣃ࣓࣮ࣛࢱ
ᮺ

ᆅ┙

グྕ

༢఩
2

-5

್

0

ᘬᙇᙉࡉ

㸫

N/mm

Ӎ400

5

┤ᚄ

㸫

m

1.1

10

⫗ཌ

㸫

m

0.011

15

㛗ࡉ

㸫

m

31.1

20

ഴᩳゅ

T

ᗘ

15

25

㛢ሰ⋡

㸫

㸫

0.13

30

N ್

N2

㸫

15

35
0

῝ࡉ 30m ௨ὸ
N್

㸫

N1
T

kN

20

࡜Ỉᖹᆅ┙཯ຊࡢẚࢆ♧ࡍ㸬1.0 ࢆୗᅇࡿ࡜ࡁᨵⰋయࡀᏳ

2000

ᐃࡍࡿ㸬

ᨵⰋタィ᫬ࡢస⏝

T'

kN

2400

T'࡜ T ࡢẚ㸦T'/T㸧 D

㸫

1.2

U

㸫

0.55

Ỉᖹຊ
㍈ຊศᢸ⋡

-5
0
5
12.5m

15
20
25
30
35
500

15

50

⏝Ỉᖹຊ

0

10

ᅗ % ᨵⰋయࡢ῝ࡉ࡜ mp1/Ppk ࡢ㛵ಀ㸪ᶓ㍈ࡣཷാᅵᅽ

᪤タᮺタィ᫬ࡢస

10

5

mp1/P pk

῝ࡉ 30m ௨῝
Ⲵ㔜

1.0

1000

1500

2000

2500

Horizontal resistance due to pile, kN

ᅗ % ᨵⰋయࡢ῝ࡉ࡜ᨵⰋయ௨῝ࡢᮺࡀⓎ᥹ࡍࡿ㍈᪉ྥ᢬ᢠຊࡢ㛵ಀ- 26 -

ᮺ㛫ᆅ┙ࢆࢭ࣓ࣥࢺᅛ໬ᨵⰋࡋࡓ⤌ᮺࡢᶓ᢬ᢠ≉ᛶ

⾲ % ᨵⰋయ㒊ศࡢ↷ᰝ࡟⏝࠸ࡿࣃ࣓࣮ࣛࢱࡢ୍ぴࣃ࣓࣮ࣛࢱFor p1グྕ༢఩್ᆅ⾲㠃఩⨨࡟స⏝ࡍࡿ㖄┤ຊ

N0

kN

0

ᆅ⾲㠃࠿ࡽୖࡢᵓ㐀≀ࡢᵓ㐀࡟స⏝ࡍࡿỈᖹຊP0kN

ᨵⰋయ῝ࡉࡢ㛵ᩘ

P0 ࡟ࡼࡿᆅ⾲㠃࡟࠾ࡅࡿ࣮࣓ࣔࣥࢺ

M0

kN࣭m

0

༢఩῝ࡉ࠶ࡓࡾࡢᇶ♏ࡢ⮬㔜

w1

kN/m

ᨵⰋయ῝ࡉࡢ㛵ᩘ

᰿ධࢀ῝ࡉ

l

m

ᨵⰋయ῝ࡉࡢ㛵ᩘ

ᗏ㠃✚

A

2

m

ᨵⰋయ῝ࡉࡢ㛵ᩘᇶ♏ࡢᖜ㸦Ỉᖹຊ࡟ᖹ⾜࡞᪉ྥࡢᖜ㸧2am

ᨵⰋయ῝ࡉࡢ㛵ᩘᇶ♏ࡢᖜ㸦Ỉᖹຊ࡟┤஺ࡍࡿ᪉ྥࡢᖜ㸧

2b

m

2.2

K' = K2/K1

K'

㸫

K1

kN/m

K2 ࡜ྠࡌ

Ỉᖹ᪉ྥࡢᆅ┙཯ຊಀᩘࡢ῝ࡉ᪉ྥࡢቑຍ⋡

K2

4

kN/m

K1 ࡜ྠࡌ

Ỉᖹ㟈ᗘ

k

㸫

0

ᗏ㠃ᙧ≧࡟ࡼࡗ࡚Ỵࡲࡿᐃᩘ

Df

㸫

1

ㄪᩚಀᩘ

m

㸫

ᨵⰋయࡢỈ୰༢఩య✚㔜㔞

Jc

kN/m

5.4

ᇶ♏ࡢ᭱ᑠᖜ

BmᨵⰋయ῝ࡉࡢ㛵ᩘᇶ♏ࡢ᰿ධࢀ㛗Dmᇶ♏ᗏ㠃࠿ࡽୗࡢᆅ┙ࡢỈ୰༢఩య✚㔜㔞ᇶ♏ᗏ㠃࠿ࡽୖࡢᆅ┙ࡢỈ୰༢యయ✚㔜㔞㖄┤᪉ྥࡢᆅ┙཯ຊಀᩘࡢ῝ࡉ᪉ྥࡢቑຍ⋡For Ppk

1
4

1.1
3

ᨵⰋయ῝ࡉࡢ㛵ᩘ

Jl

3

kN/m

7.3

Ju

kN/m3

7.3

ᨭᣢຊಀᩘࡢ≉ᛶ್

Nqk

㸫

33.3

ᨭᣢຊಀᩘࡢ≉ᛶ್

NJk

㸫

37.2

ᆅ┙ࡢࡏࢇ᩿᢬ᢠゅࡢ≉ᛶ್

Ik

ᗘ

35

ᙧ≧ಀᩘ

E

㸫

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港湾空港技術研究所報告第 56 巻第 3 号

２０１７．９

編集兼発行人

国立研究開発法人海上・港湾・航空技術研究所

発

港 湾 空 港 技 術 研 究 所

行

所

横 須 賀 市 長 瀬 ３ 丁 目 １ 番 １ 号
TEL. 046(844)5040 URL. http://www.pari.go.jp/

印

刷

所

株 式 会 社 シ ー ケ ン

C （2017）by MPAT
Copyright ○All rights reserved. No part of this book must be reproduced by any means without the written
permission of the President of MPAT
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