JPH02194213A - Sheet piling method - Google Patents
Sheet piling methodInfo
- Publication number
- JPH02194213A JPH02194213A JP1379389A JP1379389A JPH02194213A JP H02194213 A JPH02194213 A JP H02194213A JP 1379389 A JP1379389 A JP 1379389A JP 1379389 A JP1379389 A JP 1379389A JP H02194213 A JPH02194213 A JP H02194213A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- casing
- sheet piles
- ground
- sand
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 8
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 10
- 239000000440 bentonite Substances 0.000 claims abstract description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 9
- 239000004575 stone Substances 0.000 claims abstract description 9
- 239000008267 milk Substances 0.000 claims abstract description 8
- 210000004080 milk Anatomy 0.000 claims abstract description 8
- 235000013336 milk Nutrition 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 13
- 239000010959 steel Substances 0.000 abstract description 13
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 239000003351 stiffener Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は矢板打設工法に関するもので、特に岩盤等の
打設困難な地層に矢板を打設する矢板打設工法に関する
ものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sheet pile driving method, and particularly relates to a sheet pile driving method for driving sheet piles into strata where driving is difficult, such as bedrock.
［従来技術とその課題］
岩盤や巨石を含む堆積層に矢板を打設するのは困難であ
る。このために地盤に孔を掘削して、砂等に置換して矢
板を打設することが考えられる。[Prior art and its problems] It is difficult to drive sheet piles into sedimentary layers containing bedrock and megaliths. For this purpose, it is conceivable to excavate a hole in the ground, replace it with sand, etc., and then drive the sheet pile.
しかし置換したばかりの孔内に矢板を打設するのは地盤
が軟弱であって、矢板を強固に埋設することができない
。且つ止水性を保持する事が困難である。However, the ground is too soft to drive sheet piles into holes that have just been replaced, making it impossible to firmly bury the sheet piles. Moreover, it is difficult to maintain water-stop properties.
この発明は以上のような問題点を解決するためになされ
たもので、打設困難な地層であっても矢板を容易に打設
することができるとともに、打設した矢板が強固に地盤
中に起立する矢板打設工法に提供することを目的とする
。This invention was made in order to solve the above-mentioned problems.It is possible to easily drive sheet piles even in difficult strata, and the driven sheet piles are firmly embedded in the ground. The purpose is to provide for the upright sheet pile driving method.
〔課題を解決するための手段）
この発明にかかる矢板打設工法は、地盤を置換して矢板
を打設するものである。地盤に連続して複数の孔を掘削
して孔の転石、岩等を排出し、砂や砕石等によって置換
したあと孔内に複数本の矢板を連続して打設し、孔の下
部には硬化材を注入して硬化させるものである。[Means for Solving the Problems] The sheet pile driving method according to the present invention replaces the ground and drives the sheet piles. Multiple holes are continuously drilled into the ground, boulders, rocks, etc. are removed from the holes, and after replacing them with sand, crushed stones, etc., multiple sheet piles are successively driven into the holes. A hardening material is injected and hardened.
前記硬化材としてはベントナイトミルクを使用してもよ
い。Bentonite milk may be used as the hardening agent.
砂や砕石等によって置換した孔であり、矢板の打設が容
易である。The holes were replaced with sand, crushed stone, etc., making it easy to drive sheet piles.
硬化材で孔内下部を補強して矢板の傾斜を防ぐ。また不
透水層化させる。Reinforce the lower part of the hole with hardened material to prevent the sheet pile from tilting. Also, it becomes an impermeable layer.
Ｃ実施例〕
以下、図に示す一実施例に基づきこの発明の詳細な説明
する。Embodiment C] The present invention will be described in detail below based on an embodiment shown in the drawings.
＜１＞ ケーシング圧入機設置
図において１は地盤であって、岩ズリの埋立層、転石を
混在する旧海底層、および岩盤の三層から成っている。<1> In the casing press-in machine installation diagram, 1 is the ground, which consists of three layers: a reclaimed layer of rock waste, an old seabed layer containing boulders, and bedrock.
従って転石及び岩盤が矢板打設の支障とならないよう矢
板の打設深さを完全に掘削する必要がある。Therefore, it is necessary to excavate completely to the driving depth of the sheet pile so that boulders and bedrock do not interfere with sheet pile driving.
ケーシング圧入機の沈下防止のために、地盤１上に反力
基礎２を形成する。（第１図）反力基礎２上にケーシン
グ圧入機３を組立てる。（第２図）ケーシング圧入機３
はケーシング４を回転圧入可能である。A reaction foundation 2 is formed on the ground 1 to prevent the casing press-in machine from sinking. (Fig. 1) Assemble the casing press-fitting machine 3 on the reaction foundation 2. (Fig. 2) Casing press-fitting machine 3
The casing 4 can be rotated and press-fitted.
く２〉 ケーシング圧入
鉄筋で出した杭芯に円形リング定規をセットし、これに
合わせてケーシング４をセットする。2〉 Set a circular ring ruler on the pile core produced by the casing press-fit reinforcing bar, and set the casing 4 accordingly.
精度は±２０ｍｍ以内とする。Accuracy shall be within ±20mm.
又、ケーシング４の鉛直性を十字方向より２台のトラン
シットで規準し、その傾斜量が１／２００×ケ一シング
４長以上となるよう調整する。Also, the verticality of the casing 4 is determined from the cross direction using two transits, and the inclination is adjusted to be 1/200 x the length of the casing 4 or more.
杭芯にセットしたケーシング４にハンマクラブガイドを
取付け、５０を級クローラクレーン５に装着した、ハン
マクラブ６で掘削して、地上へ排出する。ケーシング４
は先端は常に掘削面より先行するよう回転圧入し壁面の
崩れのないよう注意する。又、回転、圧入操作は充分注
意し、掘削機に横スベリが生じないよう留意する。（第
３図）
掘削土は捨て掘りとして一定量を集積したのち、指定処
分地に運搬する。A hammer club guide is attached to a casing 4 set on a pile core, and excavation is carried out using a hammer club 6 attached to a class crawler crane 5, and the excavation is carried out to the ground. Casing 4
Rotate and press-fit so that the tip always precedes the excavated surface, and be careful not to collapse the wall surface. Also, be very careful when rotating and press-fitting, and be careful not to cause the excavator to slip sideways. (Figure 3) A certain amount of excavated soil will be collected as a dump and then transported to a designated disposal site.
以上のようにして地盤１に孔７を形成する。The hole 7 is formed in the ground 1 as described above.
〈３〉 ケーシング継足し
海底面の傾斜により、施工杭長が場所毎に異なるので一
本で足りない場合は、１ｍ、 ２ｍ。〈3〉 Adding casing The length of the construction pile varies depending on the slope of the seabed, so if one pile is not enough, add 1m or 2m.
３ｍ、６ｍのケーシング４を組合わせ使用する。A combination of 3m and 6m casings 4 is used.
ケーシング圧入機３に付帯した作業足場床付近までケー
シング４が下がった時点で５０を級クローラクレーン５
によりケーシング４を建込みジヨイントし、ロックピン
で緊結する。ロックピンは電動インパクトレンチを用い
締めっける。When the casing 4 has been lowered to the vicinity of the work scaffolding floor attached to the casing press-in machine 3, the 50-class crawler crane 5
The casing 4 is built into the joint and tightened with a lock pin. Tighten the lock pin using an electric impact wrench.
（第４図）
く４〉 砕石・砂埋戻し
砕石の根入れ部については後工程でベントナイトミルク
を注入するが注入による浸透性を高める為、根入部２．
０ｍを２０胴単粒砕石ａで埋戻し、残部は砂すで埋戻し
する。（第７図）ケーシング４内への投入はホッパー設
備を使用し、油圧式バックホウ若しくはタイヤ式トラク
ターショベルにより行なう。（第５図）埋戻し材料は５
日分程度を場内にストックする。又、埋戻し時に発生す
るケーシング内の濁水は４吋水中ポンプを用い汚水処理
池に送水する。(Figure 4) 4〉 Bentonite milk will be injected into the embedded part of the crushed stone/sand backfill crushed stone in the later process, but in order to increase the permeability of the injection, the embedded part 2.
0m is backfilled with 20 cylinders of single-grain crushed stone a, and the remaining area is backfilled with sand. (FIG. 7) Throwing into the casing 4 is carried out using a hopper facility and a hydraulic backhoe or a tire-type tractor shovel. (Figure 5) Backfilling material is 5
Stock up on the premises for about a day. Also, the turbid water inside the casing generated during backfilling is sent to the sewage treatment pond using a 4-inch submersible pump.
く５〉 ケーシング引抜
埋戻し完了後、ケーシング４を引抜き、機材を移動させ
る。埋戻個所が軟弱となる場合は鉄板等を用いて養生す
る。（第６図）
く６〉 矢板打設
以上のようにして連続して地盤１に形成した孔７内に鋼
矢板８を連続して打設する。（第８図）鋼矢板打設後ボ
ーリングマシンにて鋼矢板８に隣り合わせて複数本の注
入ロッド９を根入れ部下端まで至らせる。5> After casing removal and backfilling is completed, casing 4 is pulled out and the equipment is moved. If the backfilled area becomes soft, use iron plates, etc. to cure it. (Fig. 6) 6〉 Driving of sheet piles Steel sheet piles 8 are continuously driven into holes 7 that have been continuously formed in the ground 1 as described above. (FIG. 8) After driving the steel sheet piles, a plurality of injection rods 9 are placed adjacent to the steel sheet piles 8 using a boring machine to reach the lower end of the insertion.
く７〉 ベントナイト注入
前記注入ロッド９を通して孔７の根入部にベントナイト
ミルク１０を注入する。ベントナイトミルク１０の配合
は以下の通りである。7> Injection of bentonite Bentonite milk 10 is injected into the root of the hole 7 through the injection rod 9. The composition of bentonite milk 10 is as follows.
水・・・・・・・・・・・・・・・・・・・・・・ ５
１セメント（高炉Ｂ種）・・・・・・・・１６００ ｇ
ベントナイト（筑前５号）・・・・ ３７５ｇＷ／Ｃ・
・・・・・・・・・・・・・・・・・・・ ３１２．５
％ベントナイトミルクＩＯが硬化することによって根入
部の補強と不透水層化がなされる。Water・・・・・・・・・・・・・・・・・・・・・・・・ 5
1 cement (blast furnace type B) 1600 g
Bentonite (Chikuzen No. 5)... 375gW/C・
・・・・・・・・・・・・・・・・・・ 312.5
% bentonite milk IO hardens, reinforcing the root part and making it an impermeable layer.
〈８〉 ビット埋設
以上のようにして鋼矢板８による止水を行なったのち、
この鋼矢板８と平行して一定間隔離して鋼矢板１１を打
設する。（第９図）鋼矢板８と１１の上部間にタイプル
１２を掛は渡して鋼矢板８の復起しを行なう。その扱網
矢板８に沿って地盤１を掘削し、掘削した個所に止水ピ
ット１３を設置する。（第１０図）掘削土砂を埋め戻し
て止水ピット１３を埋設し、鋼矢板８，１１を引抜く。<8> After burying the bit and sealing off the water with the steel sheet pile 8 as described above,
A steel sheet pile 11 is placed in parallel with this steel sheet pile 8 and spaced apart from it for a certain period of time. (FIG. 9) A tie plate 12 is hung between the upper parts of the steel sheet piles 8 and 11, and the steel sheet pile 8 is raised back up. The ground 1 is excavated along the handling net sheet pile 8, and a water stop pit 13 is installed at the excavated location. (Fig. 10) The excavated soil is backfilled to bury the water stop pit 13, and the steel sheet piles 8 and 11 are pulled out.
この発明は以上のような構成を有し、地盤に孔を掘削し
て転石、岩等を排出し、その後砂や砕石によって置換し
た後矢板を打設するため、岩盤や巨石を含む堆積層であ
っても容易に矢板を打設できる。This invention has the above-mentioned configuration, and in order to excavate a hole in the ground, discharge boulders, rocks, etc., replace them with sand or crushed stones, and then drive the sheet piles, so it is possible to drill holes in the sedimentary layer containing bedrock and megaliths. Even if there is, sheet piles can be easily installed.
孔内の下部には硬化材を注入するため、根入部の補強と
なって矢板を強固に起立できるとともに、不透水化とし
て止水効果を損なうようなことがない。Since hardening material is injected into the lower part of the hole, it strengthens the root part and allows the sheet pile to stand up firmly, and does not impermeate water and impair the water-stopping effect.
第１図〜第６図はこの発明の一実施例を示す施工順序断
面図、第７図は孔の断面図、第８図は孔の平面図、第９
図〜第１１図はピット埋設工の施工順序断面図である。
ｌ・・地盤、２・・反力基礎、３・・ケーシング圧入機
、４・・ケーシング、５・・クローラクレーン、６・・
ハンマクラブ、７・・孔、８・・鋼矢板、９・・注入ロ
ッド、１０・・ベントナイトミルク、１１・１鋼矢板、
１２・・タイプル、１３・・止水ピット。
第
図
第３図
’′−７
第４図
第２図1 to 6 are construction sequence sectional views showing an embodiment of the present invention, FIG. 7 is a sectional view of the hole, FIG. 8 is a plan view of the hole, and FIG.
Figures 1 to 11 are sectional views showing the construction sequence of the pit burial work. l...Ground, 2...Reaction foundation, 3...Casing press-in machine, 4...Casing, 5...Crawler crane, 6...
Hammer club, 7...hole, 8...steel sheet pile, 9...injection rod, 10...bentonite milk, 11.1 steel sheet pile,
12... Taipur, 13... Water stop pit. Figure 3''-7 Figure 4 Figure 2
Claims (2)
排出し、砂や砕石等によって置換した後、孔内に複数本
の矢板を連続して打設し、孔内の下部岩盤部には硬化材
を注入して硬化させることを特徴とする矢板打設工法。(1) After drilling multiple holes in the ground in succession, expelling rocks, etc. from the holes, and replacing them with sand, crushed stones, etc., multiple sheet piles are successively driven into the holes. A sheet pile driving method characterized by injecting hardening material into the lower bedrock and hardening it.
を特徴とする請求項（１）記載の矢板打設工法。(2) The sheet pile driving method according to claim (1), characterized in that bentonite milk is used as the hardening material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379389A JPH02194213A (en) | 1989-01-23 | 1989-01-23 | Sheet piling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1379389A JPH02194213A (en) | 1989-01-23 | 1989-01-23 | Sheet piling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02194213A true JPH02194213A (en) | 1990-07-31 |
Family
ID=11843126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1379389A Pending JPH02194213A (en) | 1989-01-23 | 1989-01-23 | Sheet piling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02194213A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030087288A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 세원지오신테크 | Executon method of wall for intercepting contamination zone of using steel sheet pile |
| JP2008248537A (en) * | 2007-03-29 | 2008-10-16 | Ohbayashi Corp | Method of driving rotatingly press-fitted pile, method of constructing foundation structure, and foundation structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123505A (en) * | 1977-04-01 | 1978-10-28 | Kajima Corp | Method of placing sheet pile and similars |
| JPS5640218A (en) * | 1979-09-10 | 1981-04-16 | Toshiba Corp | Ac-dc converting transformer |
| JPS62206119A (en) * | 1986-03-05 | 1987-09-10 | Okumura Constr Co Ltd | Construction of continuous cut-off wall |
-
1989
- 1989-01-23 JP JP1379389A patent/JPH02194213A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53123505A (en) * | 1977-04-01 | 1978-10-28 | Kajima Corp | Method of placing sheet pile and similars |
| JPS5640218A (en) * | 1979-09-10 | 1981-04-16 | Toshiba Corp | Ac-dc converting transformer |
| JPS62206119A (en) * | 1986-03-05 | 1987-09-10 | Okumura Constr Co Ltd | Construction of continuous cut-off wall |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030087288A (en) * | 2002-05-08 | 2003-11-14 | 주식회사 세원지오신테크 | Executon method of wall for intercepting contamination zone of using steel sheet pile |
| JP2008248537A (en) * | 2007-03-29 | 2008-10-16 | Ohbayashi Corp | Method of driving rotatingly press-fitted pile, method of constructing foundation structure, and foundation structure |
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