JP3404997B2 - Deformation prevention method for double closing dike - Google Patents
Deformation prevention method for double closing dikeInfo
- Publication number
- JP3404997B2 JP3404997B2 JP16058195A JP16058195A JP3404997B2 JP 3404997 B2 JP3404997 B2 JP 3404997B2 JP 16058195 A JP16058195 A JP 16058195A JP 16058195 A JP16058195 A JP 16058195A JP 3404997 B2 JP3404997 B2 JP 3404997B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet pile
- steel sheet
- cut
- steel
- steel pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Revetment (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、仮締切、河川堤防、護
岸、導流堤、水門等の既設鋼矢板二重締切堤防の変形防
止工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing deformation of an existing steel sheet pile double cut-off dike such as a temporary cutoff, a river dike, a revetment, a dike, and a sluice.
【０００２】[0002]
【従来の技術】堤防を構成する一重締切あるいは二重締
切が何らかの原因で大きく変形したり、締切部材として
利用している鋼矢板、鋼管矢板等の発生応力が許容応力
度あるいは降伏応力度を越えて全体として安定しなくな
った場合、一般的には以下の方法が用いられる。2. Description of the Related Art A single cutoff or a double cutoff that constitutes a bank is greatly deformed for some reason, or the stress generated in steel sheet piles, steel pipe sheet piles, etc. used as shutoff members exceeds the allowable stress level or yield stress level. If it becomes unstable as a whole, the following method is generally used.
【０００３】その１は、締切の前面側あるいは背面側を
捨石あるいは土砂等で押さえ、全体の安定性を増大させ
るものであり、その２は、締切の前面側あるいは背面側
に新規に締切を構築するものであり、その３は既設構造
物内外に鋼管矢板等を増打ちして、全体としての剛性を
高めて安定性を増大させる。The first is to increase the overall stability by pressing the front side or the back side of the deadline with rubble or earth and sand, and the second is to construct a new deadline on the front side or the back side of the deadline. The third is to increase the rigidity as a whole by increasing the steel pipe sheet pile and the like inside and outside the existing structure to increase the stability.
【０００４】[0004]
【発明が解決しようとする課題】前記その１の押さえ盛
土あるいはその２の新規の締切を構築する場合には、既
設の締切を有効利用することが難しく、無駄が多くな
る。When constructing the above-mentioned 1 embankment embankment or the 2 new deadline, it is difficult to effectively use the existing deadline, resulting in a lot of waste.
【０００５】また、従来の押さえ盛土等の補強方法で
は、施工期間、施工後の原地盤の強度増加のために一定
期間放置する必要があり、締切としての使用に時間がか
かるものである。In addition, in the conventional method of reinforcing the embankment, it is necessary to leave it for a certain period in order to increase the strength of the original ground after the construction, and it takes time to use it as a deadline.
【０００６】さらに、施工に際して重機の搬入が困難な
場合も多く、新規の締切あるいは押さえ盛土等を行うの
に多くの用地もしくはスペースを必要とする。Further, it is often difficult to carry in heavy equipment during construction, and a lot of land or space is required to carry out a new deadline or holding embankment.
【０００７】本発明の目的は前記従来例の不都合を解消
し、既設の構造物自体が持っているあるいは残っている
抵抗能力を可能な限り活用して合理的な施工ができ、ま
た、短時間かつ軽量の機械で施工することも可能であ
り、さらに、新規用地やスペースも不要ですむ二重締切
堤防の変形防止工法を提供することにある。The object of the present invention is to eliminate the inconveniences of the above-mentioned conventional example, to make a rational construction by utilizing the resistance capacity of the existing structure itself or remaining as much as possible, and for a short time. It is also possible to construct with a lightweight machine, and to provide a method for preventing deformation of a double cutoff dike, which does not require new land or space.
【０００８】[0008]
【課題を解決するための手段】本発明は前記目的を達成
するため、二重締切堤防の既設の締切鋼矢板や鋼管矢板
の外側に新規の鋼矢板もしくは鋼管矢板を打設し、既設
締切鋼矢板や鋼管矢板の相互間あるいは既設締切鋼矢板
や鋼管矢板と新規の鋼矢板もしくは鋼管矢板間もしくは
その両方の原地盤の部分を地盤改良すること、および、
さらに、既設の締切鋼矢板や鋼管矢板と新規の鋼矢板も
しくは鋼管矢板のそれぞれの頭部をコーピングで剛結す
ることを要旨とするものである。In order to achieve the above-mentioned object, the present invention punches a new steel sheet pile or a steel pipe sheet pile on the outside of an existing cut-off steel sheet pile or steel pipe sheet pile of a double cut-off levee, and Improving the ground between the sheet piles or the steel pipe sheet piles or between the existing dead steel sheet piles or the steel pipe sheet piles and the new steel sheet piles or between the steel pipe sheet piles or both of them, and,
Further, the gist is to rigidly connect the heads of the existing cut-off steel sheet pile or steel pipe sheet pile and the new steel sheet pile or the steel pipe sheet pile by coping.
【０００９】[0009]
【作用】請求項１記載の本発明によれば、二重締切の鋼
矢板（鋼管矢板）が設計上十分な耐力を有していない場
合であり、二重締切の堤防の既設の締切鋼矢板や鋼管矢
板の外側に新規の鋼矢板もしくは鋼管矢板を打設してこ
れを締切部材として利用し、既設締切鋼矢板等間あるい
は既設締切鋼矢板等と新規の鋼矢板等間もしくはその両
方の原地盤の部分を地盤改良することで原地盤が軟弱な
場合等でも飛躍的な改良効果が期待できる。According to the present invention as set forth in claim 1, the double cut-off steel sheet pile (steel pipe sheet pile) does not have sufficient proof strength in terms of design, and the existing cut-off steel sheet pile for the double cut-off levee. A new steel sheet pile or a steel pipe sheet pile on the outside of the steel pipe sheet pile and use this as a closing member, and between the existing cut-off steel sheet piles, or between the existing cut-off steel sheet piles and the new steel sheet piles, or both. By improving the ground part, a dramatic improvement effect can be expected even when the original ground is soft.
【００１０】請求項２記載の本発明によれば、前記作用
に加えて、既設の締切鋼矢板等と新規の鋼矢板等のそれ
ぞれの頭部をコーピングで剛結することで、既設の締切
鋼矢板等と新規の鋼矢板等を一体とした締切として機能
させることができる。According to the second aspect of the present invention, in addition to the above-mentioned action, the existing cut-off steel sheet piles or the like and the new steel sheet piles or the like are rigidly connected to each other by copings, whereby the existing cut-off steel sheets are The sheet pile and the new steel sheet pile can be made to function as a deadline.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面について詳細に
説明する。図１、図２は本発明の二重締切堤防の変形防
止工法の１実施例を示す縦断側面図で、図中１は鋼矢板
２や鋼管矢板による二重締切の堤防を示す。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 and FIG. 2 are vertical side views showing an embodiment of the deformation preventing construction method for a double cut-off bank according to the present invention. In FIG. 1, reference numeral 1 shows a double cut-off bank with a steel sheet pile 2 or a steel pipe sheet pile.
【００１２】二重締切堤防１の既設の締切鋼矢板２や鋼
管矢板の外側に新規の鋼矢板６もしくは鋼管矢板を打設
し、既設締切鋼矢板２等間すなわち、二重締切堤防１内
あるいは既設締切鋼矢板２等と新規の鋼矢板６等間もし
くはその両方の原地盤４の部分を地盤改良して改良体５
する。（図示の例は既設締切鋼矢板２等と新規の鋼矢板
６等間を地盤改良した場合である。）A new steel sheet pile 6 or a steel pipe sheet pile is placed outside the existing cut-off steel sheet pile 2 or steel pipe sheet pile of the double cut-off levee 1, and the space between the existing cut-off steel sheet piles 2, etc. An improved body 5 by improving the ground at the part of the original ground 4 between the existing cut-off steel sheet pile 2 and the new steel sheet pile 6 or both.
To do. (The illustrated example is a case where the ground between the existing cut-off steel sheet pile 2 and the new steel sheet pile 6 is improved.)
【００１３】地盤改良工法として高圧ジェット噴射混合
処理工法のうち、グラウト・空気噴射方式（ＪＳＧ工
法）を施工場所が陸域より離れている場合で行うには、
図３に示すようにセメントサイロ８、水タンク９、グラ
ウトミキサー10、超高圧ポンプ11などの固化材練混ぜプ
ラントを台船７に積込んで、ＪＳＧマシーン12により施
工を行う。図中13はサンドポンプ、14はＪＳＧマシーン
12を吊支するクレーンである。Among the high-pressure jet injection mixing treatment methods as the ground improvement method, the grout / air injection method (JSG method) is performed when the construction site is far from the land area.
As shown in FIG. 3, a solidifying material mixing plant such as a cement silo 8, a water tank 9, a grout mixer 10, and an ultrahigh pressure pump 11 is loaded on a berth 7, and construction is performed by a JSG machine 12. In the figure, 13 is a sand pump and 14 is a JSG machine.
It is a crane that suspends 12 pieces.
【００１４】そして、既設の締切鋼矢板２等と新規の鋼
矢板６等との一体化を図るため、それぞれの頭部を鉄筋
コンクリートもしくは鋼材によるコーピング15で剛結し
た。このコーピング15には開口15ａ，15ｂを設け、将来
の中詰土３の沈下、地盤改良施工時のスライム処理用と
して使用するが、原地盤改良時に発生するスライム等は
施工済みの区域に原地盤４とコーピング15との隙間部分
に充填し、埋戻す。Then, in order to integrate the existing cut-off steel sheet pile 2 and the like with the new steel sheet pile 6 and the like, the respective heads are rigidly connected by a coping 15 made of reinforced concrete or steel material. This coping 15 has openings 15a and 15b to be used for subsidence of the middle soil 3 in the future and for slime treatment at the time of ground improvement construction. Fill the gap between 4 and coping 15 and backfill.
【００１５】[0015]
【発明の効果】以上述べたように本発明の二重締切堤防
の変形防止工法は、二重締切堤防として既設の構造物自
体が持っているあるいは残っている抵抗能力を可能な限
り活用して合理的な施工ができ、また、短時間かつ軽量
の機械で施工することも可能であり、さらに、新規用地
やスペースも不要ですむものである。As described above, the method for preventing deformation of a double cut-off levee of the present invention utilizes the existing resistance capacity of the existing structure itself as the double cut-off levee as much as possible. Reasonable construction is possible, and construction can be done in a short time and with a lightweight machine, and no new land or space is required.
【図１】本発明の二重締切堤防の変形防止工法の１実施
例を示す縦断側面図である。FIG. 1 is a vertical cross-sectional side view showing an embodiment of a deformation preventing construction method for a double cut-off dike according to the present invention.
【図２】本発明の二重締切堤防の変形防止工法の１実施
例を示す平面図である。FIG. 2 is a plan view showing an embodiment of a deformation preventing construction method for a double cut-off dike according to the present invention.
【図３】本発明の二重締切堤防の変形防止工法の１実施
例での海上施工の場合の縦断側面図である。FIG. 3 is a vertical cross-sectional side view in the case of marine construction in one embodiment of the deformation preventing method for a double cutoff dike of the present invention.
１…二重締切堤防 ２…鋼矢板
３…中詰土 ４…原地盤
５…改良体 ６…鋼矢板
７…台船 ８…セメントサ
イロ
９…水タンク 10…グラウトミ
キサー
11…超高圧ポンプ 12…ＪＳＧマシ
ーン
13…サンドポンプ 14…クレーン
15…コーピング 15ａ，15ｂ…開
口1 ... Double deadline embankment 2 ... Steel sheet pile 3 ... Medium filling soil 4 ... Base soil 5 ... Improved body 6 ... Steel sheet pile 7 ... Barge 8 ... Cement silo 9 ... Water tank 10 ... Grout mixer 11 ... Super high pressure pump 12 ... JSG machine 13 ... Sand pump 14 ... Crane 15 ... Coping 15a, 15b ... Opening
───────────────────────────────────────────────────── フロントページの続き (72)発明者 波多野 徹 福岡県福岡市博多区博多駅前三丁目12番 10号 鹿島建設株式会社 九州支店内 (72)発明者 池嵜 正勝 福岡県福岡市博多区博多駅前三丁目12番 10号 鹿島建設株式会社 九州支店内 (72)発明者 三原 孝彦 東京都港区元赤坂一丁目２番７号 鹿島 建設株式会社内 (56)参考文献 特開 昭62−137315（ＪＰ，Ａ) 特開 昭57−81507（ＪＰ，Ａ) 特開 昭58−11210（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Toru Hatano 3-12, Hakata Station, Hakata-ku, Fukuoka City, Fukuoka Prefecture No. 10 Kashima Construction Co., Ltd. Kyushu Branch (72) Inventor Masakatsu Ikezaki 3-12, Hakata Station, Hakata-ku, Fukuoka City, Fukuoka Prefecture No. 10 Kashima Construction Co., Ltd. Kyushu Branch (72) Inventor Takahiko Mihara Kashima, 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Construction Co., Ltd. (56) References JP-A-62-137315 (JP, A) JP-A-57-81507 (JP, A) Japanese Patent Laid-Open No. 58-11210 (JP, A)
Claims (2)
矢板の外側に新規の鋼矢板もしくは鋼管矢板を打設し、
既設締切鋼矢板や鋼管矢板の相互間あるいは既設締切鋼
矢板や鋼管矢板と新規の鋼矢板もしくは鋼管矢板間もし
くはその両方の原地盤の部分を地盤改良することを特徴
とした二重締切堤防の変形防止工法。1. A new steel sheet pile or a steel pipe sheet pile is placed outside the existing cut-off steel sheet pile or steel pipe sheet pile of the double cut-off levee,
Deformation of double cut-off dykes characterized by ground improvement between existing cut-off steel sheet piles or steel pipe sheet piles, or between existing cut-off steel sheet piles or steel pipe sheet piles and new steel sheet piles or steel pipe sheet piles, or both. Prevention method.
新規の鋼矢板もしくは鋼管矢板のそれぞれの頭部をコー
ピングで剛結する請求項１記載の二重締切堤防の変形防
止工法。2. The method for preventing deformation of a double cut-off levee according to claim 1, wherein the heads of an existing cut-off steel sheet pile or steel pipe sheet pile and a new steel sheet pile or steel pipe sheet pile are rigidly connected by coping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16058195A JP3404997B2 (en) | 1995-06-27 | 1995-06-27 | Deformation prevention method for double closing dike |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16058195A JP3404997B2 (en) | 1995-06-27 | 1995-06-27 | Deformation prevention method for double closing dike |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0913344A JPH0913344A (en) | 1997-01-14 |
| JP3404997B2 true JP3404997B2 (en) | 2003-05-12 |
Family
ID=15718064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16058195A Expired - Fee Related JP3404997B2 (en) | 1995-06-27 | 1995-06-27 | Deformation prevention method for double closing dike |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404997B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5117683B2 (en) * | 2006-04-12 | 2013-01-16 | 株式会社間組 | Reinforcement structure of embankment |
| JP4685809B2 (en) * | 2007-01-26 | 2011-05-18 | 新日本製鐵株式会社 | Wall structure and its construction method |
| JP5407642B2 (en) * | 2009-07-30 | 2014-02-05 | Ｊｆｅスチール株式会社 | Composite dike and its construction method |
-
1995
- 1995-06-27 JP JP16058195A patent/JP3404997B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0913344A (en) | 1997-01-14 |
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