JP5464510B2 - 洋上構造物用水底基礎構造及びその構築方法 - Google Patents
洋上構造物用水底基礎構造及びその構築方法 Download PDFInfo
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- JP5464510B2 JP5464510B2 JP2009079770A JP2009079770A JP5464510B2 JP 5464510 B2 JP5464510 B2 JP 5464510B2 JP 2009079770 A JP2009079770 A JP 2009079770A JP 2009079770 A JP2009079770 A JP 2009079770A JP 5464510 B2 JP5464510 B2 JP 5464510B2
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- pile
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- 238000010276 construction Methods 0.000 title claims description 17
- 238000003780 insertion Methods 0.000 claims description 29
- 230000037431 insertion Effects 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000007796 conventional method Methods 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000011178 precast concrete Substances 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Foundations (AREA)
- Wind Motors (AREA)
Description
β算出例
鋼管杭φ 4300×t45
E=2.0×108(kN/m2)
I=1.36(m4)
ks=15,000(kN/m3)
D=4.3(m)
3/β≒24.5
表層地盤
変形係数E=28,000(kN/m2)
ポアソン比ν=0.33
支持地盤
変形係数E=142,000(kN/m2)
ポアソン比ν=0.25
数値解析
2 支持地盤
10 水底基礎
11 床版
12 杭
13 改良地盤
14 杭挿入孔
15 充填材
16 杭下端挿入孔
21 鋼管ケーシング
22 バケット
Claims (1)
- 水底の表層地盤下にこれより硬質の支持地盤が存在する水底地盤に、複数本の杭を、それぞれの杭の下端を前記支持地盤内に根入れした状態に設置し、該複数本の杭の上端に床版を支持させ、前記杭の下端の支持地盤に対する根入れ長さを該杭の外径以下の深さとし、且つ、該各杭の周囲の前記表層地盤を、地盤改良工法によって支持地盤と同程度の強度に改良された改良地盤とし、該改良地盤を掘削形成した杭挿入孔に前記各杭を挿入し、該杭と杭挿入孔との隙間をグラウト等の充填材が充填されて杭と改良地盤が一体化されている洋上構造物用水底基礎構造の構築に際し、
前記杭設置位置の表層地盤を、前記杭の周囲の一定範囲において前記支持地盤と同程度の強度となるようにセメント系の地盤改良材を使用した深層混合により改良処理し、該改良処理後の改良地盤が所望の最終強度に達する前に、該改良地盤の中央に円筒状の鋼管ケーシングを押し込みつつ内部土砂を排出した後、該ケーシングを通じて前記支持地盤に根入れ長さが該杭の外径以下の杭下端挿入孔を形成し、然る後、前記ケーシングを抜き取ることにより杭挿入孔を形成し、前記杭挿入孔内に杭を挿入しその下端を支持地盤の杭下端挿入孔に挿入して、該杭外周の隙間にグラウト等の充填材を充填することを特徴とする洋上構造物用水底基礎の構築方法。
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JP2009079770A JP5464510B2 (ja) | 2009-03-27 | 2009-03-27 | 洋上構造物用水底基礎構造及びその構築方法 |
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JP2009079770A JP5464510B2 (ja) | 2009-03-27 | 2009-03-27 | 洋上構造物用水底基礎構造及びその構築方法 |
Publications (2)
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JP2010229747A JP2010229747A (ja) | 2010-10-14 |
JP5464510B2 true JP5464510B2 (ja) | 2014-04-09 |
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JP (1) | JP5464510B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101364069B1 (ko) | 2011-12-13 | 2014-02-20 | 재단법인 포항산업과학연구원 | 풍력 발전기용 고정 장치 및 그 설치 방법 |
CN103061353B (zh) * | 2013-01-05 | 2015-01-07 | 台山市宁华电力设计有限公司 | 防风加固的砼杆套筒基础 |
CN104499500B (zh) * | 2014-12-02 | 2016-02-17 | 瑞风能源(武汉)工程技术有限公司 | 一种风电基础后灌浆补强防水系统 |
CN104452795B (zh) * | 2014-12-12 | 2016-08-17 | 北京筑福国际工程技术有限责任公司 | 一种老旧住宅外加电梯基础结构及其施工方法 |
EP3411595B1 (en) * | 2016-02-05 | 2020-10-28 | Vestas Wind Systems A/S | Method of replacing anchor bolts in wind turbine foundations |
KR102323225B1 (ko) * | 2020-04-27 | 2021-11-08 | 한국해양과학기술원 | 풍력터빈 타워 플랜지 앵커링 기초 보수 보강 공법 |
CN114277856B (zh) * | 2022-01-21 | 2023-09-01 | 中国长江三峡集团有限公司 | 基于马赛克水下胶结堆石的单桩基础防冲刷施工方法 |
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JPS6055107A (ja) * | 1983-09-05 | 1985-03-30 | 新日本製鐵株式会社 | 多柱基礎防護装置 |
JPS62202125A (ja) * | 1986-02-26 | 1987-09-05 | Sumitomo Metal Ind Ltd | 鋼板セルを用いた水中基礎工法 |
JP4606086B2 (ja) * | 2004-08-09 | 2011-01-05 | 株式会社竹中土木 | 風力発電施設のモノパイル式基礎構造 |
JP4664636B2 (ja) * | 2004-09-16 | 2011-04-06 | 株式会社竹中土木 | モノパイル式基礎の構築方法 |
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