JP2006291462A5 - - Google Patents
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- JP2006291462A5 JP2006291462A5 JP2005109577A JP2005109577A JP2006291462A5 JP 2006291462 A5 JP2006291462 A5 JP 2006291462A5 JP 2005109577 A JP2005109577 A JP 2005109577A JP 2005109577 A JP2005109577 A JP 2005109577A JP 2006291462 A5 JP2006291462 A5 JP 2006291462A5
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- Prior art keywords
- jack
- operation arm
- tip
- chain
- winding
- Prior art date
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- 238000004804 winding Methods 0.000 claims description 12
- 239000002689 soil Substances 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241000221535 Pucciniales Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Description
本発明は、土留め支持ジャッキの取外方法及び同方法に使用する取外器具に関するものである。 The present invention relates to a method of removing a retaining jack and a removing device used in the method.
土木工事において、掘削箇所の壁面が崩壊して、掘削箇所において所定の作業の実施に支障が生じないように、掘削箇所の壁面に土留用の矢板を設けている。またこの矢板が土圧によって倒壊しないように、矢板に添う横梁部材と対面する横梁部材間に支持梁部材を架設している。そして支持梁部材には、矢板を土壁面側に押圧するようにジャッキを介設している(特許文献1)。 In civil engineering work, a sheet pile for earth retaining is provided on the wall surface of the excavation site so that the wall surface of the excavation site does not collapse and the execution of a predetermined work is not hindered at the excavation site. In addition, a support beam member is installed between the cross beam member facing the cross plate member and the cross beam member facing the sheet pile so that the sheet pile does not collapse due to earth pressure. A jack is interposed in the support beam member so as to press the sheet pile toward the earth wall surface (Patent Document 1).
特に図4に示すように、矢板Aに添わせる横梁部材Bに架設している支持梁部材(H鋼)Cの中間にジャッキ1を介在させている場合、このジャッキ1は通常はネジジャッキが採用されており、回転軸11の外周に操作棒12を設け、操作棒12の回動操作でジャッキ1を伸縮させているものである。 In particular, as shown in FIG. 4, when a jack 1 is interposed in the middle of a supporting beam member (H steel) C installed on a cross beam member B attached to a sheet pile A, this jack 1 is usually a screw jack. The operation rod 12 is provided on the outer periphery of the rotating shaft 11, and the jack 1 is expanded and contracted by rotating the operation rod 12.
ところで、前記の土木工事において工事が終了すると、ジャッキ1を緩めて外し、その後支持梁部材C、横梁部材B、矢板Aと順次取り除いていくものである。 By the way, when the construction is completed in the above-mentioned civil engineering work, the jack 1 is loosened and removed, and then the support beam member C, the cross beam member B, and the sheet pile A are sequentially removed.
しかし前記のジャッキ1の取り外しに際して、ジャッキ1の露出した回転軸11に土砂が付着したり、また工事期間が長いと回転軸部分が錆びてしまい、通常の回動操作ではジャッキ1を緩めることができなくなっていた。 However, when the jack 1 is removed, earth and sand adhere to the exposed rotating shaft 11 of the jack 1 or the rotating shaft portion rusts if the construction period is long, and the jack 1 can be loosened in a normal rotating operation. I couldn't.
このためジャッキ1の取外作業は、ジャッキを緩めることなく、支持梁部材間の押圧力を有している状態のまま、クレーン等で強引に取り外していた。この取外手段ではジャッキの破損が生じてしまう問題がある。 For this reason, the removal work of the jack 1 was forcibly removed by a crane or the like while keeping the pressing force between the supporting beam members without loosening the jack. This detaching means has a problem that the jack is damaged.
そこで本発明は、新規な土留支持ジャッキの取外し方法及び取外し器具を提案したものである。 Accordingly, the present invention proposes a novel method for removing a retaining ring jack and a removing device.
本発明に係る土留支持ジャッキの取外方法は、土留め用の支持梁部材の長手方向に介在したネジジャッキの回転軸の四方に突設した操作棒に、長さの相違する短中長の三本の連結操作腕体をジャッキ緩回転方向へ順に装着し、支持梁部材に固定して先部を操作棒回動面上における長連結操作腕体の装着時外端と同心円となる位置近傍まで張り出させた片持ち梁体の先端と、短連結操作腕体の先端との間を、線部材及び前記線部材の巻取手道具で、線部材を長中の連結操作腕体の先端に摺動自在に当接支持して連結し、巻取手道具の巻取りでジャッキ操作棒を緩回転方向に回転させてジャッキを緩めることを特徴とするものである。 The method of removing the earth retaining support jack according to the present invention comprises a short, medium and long length of operation rods protruding in four directions of the rotation axis of the screw jack interposed in the longitudinal direction of the support beam member for retaining the earth. Three connecting operation arm bodies are mounted in order in the slow rotation direction of the jack, fixed to the support beam member, and near the position where the tip part is concentric with the outer end when the long connecting operation arm body is mounted on the operating rod rotation surface Between the tip of the cantilever beam extended to the tip of the short connection operation arm and the wire member and the wire member take-up tool, the wire member is placed at the tip of the long connection operation arm. It is characterized in that it is slidably abutted and supported and connected, and the jack is loosened by rotating the jack operating rod in the slow rotation direction by winding the winding tool.
また本発明に係る土留支持ジャッキの取外し器具は、土留め用の支持梁部材の長手方向に介在したネジジャッキの回転軸の四方に突設した操作棒を挿着可能とした筒状の長さの相違する三本連結操作腕体と、支持梁部材に取り付けて所定位置まで張り出させる片持ち梁体と、チェーンの巻き取り機構を備えた本体に、本体係止鉤を付設すると共に、チェーン先端にも係止鉤を設けた巻取具とを備え、短連結操作腕体の先端には係止鉤の掛け止め部を設け、中長両連結操作腕体の先端にチェーンの摺動受け部を設けてなることを特徴とし、更に長連結操作腕体の基部側を、適宜角度で折曲してなるものである。 Further, the earth retaining support jack removing device according to the present invention has a cylindrical length that allows an operation rod projecting in four directions of the rotation axis of the screw jack interposed in the longitudinal direction of the supporting beam member for earth retaining to be inserted. A main body locking rod is attached to a main body provided with three different connecting operation arm bodies, a cantilever body which is attached to a support beam member and extends to a predetermined position, and a chain winding mechanism, and a chain. It has a winder with a locking rod at the tip, a hooking hook for the locking rod is provided at the tip of the short link operating arm, and a chain slide receiver at the tip of the middle and long linked control arms. And a base portion side of the long connecting operation arm body is bent at an appropriate angle.
而して片持ち梁体の基部を支持梁部材に固定し、片持ち梁体に近い箇所から順次長連結操作腕体、中連結操作腕体、短連結操作腕体をジャッキの操作棒に装着し、片持ち梁体に本体を係止した巻取具のチェーンを、長連結操作腕体と中連結操作腕体の先端の摺動受け部に当接させ、更に先端係止鉤を短連結操作腕体の掛け止め部に引っ掛け、レバーブロックのチェーンの巻取り操作を行うと、短連結操作腕体は直接緩み方向への回転モーメントが与えられ、中長連結操作腕体は、チェーン当接箇所におけるチェーンの張り方向の相違によって、緩み方向に回転モーメントが与えられることになり、ジャッキ回転軸を強い力で回転させ、ジャッキを緩めることができるものである。 Thus, the base part of the cantilever body is fixed to the support beam member, and the long connection operation arm body, the middle connection operation arm body, and the short connection operation arm body are sequentially attached to the jack of the jack from the position close to the cantilever body. Then, the chain of the winder with the main body locked to the cantilever is brought into contact with the slide receiving portions at the ends of the long connection operation arm body and the middle connection operation arm body, and the front end locking rod is connected shortly. When the lever block chain is retracted by hooking it to the latching part of the operation arm body, the short connection operation arm body is directly given a rotational moment in the loosening direction, and the medium and long connection operation arm body is in contact with the chain. Due to the difference in the tension direction of the chain at the location, a rotational moment is given in the loosening direction, and the jack can be loosened by rotating the jack rotating shaft with a strong force.
また特に長連結操作腕体の基部側に折曲部を設けたことによって、長連結操作腕体が他の支持梁体の存在によってジャッキ回転ができない状況下において、ジャッキ操作棒への挿着方向を変えることで対応できるものである。 In addition, by providing a bent part on the base side of the long connection operation arm body, the insertion direction to the jack operation rod in the situation where the long connection operation arm body cannot rotate the jack due to the presence of other support beam bodies. Can be dealt with by changing
本発明は上記構成であり、通常の手動回転操作では緩めることのできなかった土留支持ジャッキを、巻取具の操作で簡単に緩め回転を行うことができたものである。 The present invention has the above-described configuration, and the earth retaining support jack that could not be loosened by a normal manual rotating operation can be easily loosened and rotated by operating a winder .
次に本発明の実施の形態について説明する。本発明の対象となるジャッキ1は、図4に例示するとおり矢板Aに添わせる横梁部材Bを押圧支持している支持梁部材(H鋼)Cの中間に介在させているもので、このジャッキ1は、両端に押圧板13と螺孔部14を備え回転軸11で連繋されており、回転軸11の外周に操作棒12を突設しているものである。 Next, an embodiment of the present invention will be described. A jack 1 which is an object of the present invention is interposed between support beam members (H steel) C that press and support a cross beam member B attached to a sheet pile A as illustrated in FIG. Reference numeral 1 denotes a pressing plate 13 and screw holes 14 at both ends, which are connected to each other by a rotating shaft 11, and an operating rod 12 projecting from the outer periphery of the rotating shaft 11.
前記の土留支持ジャッキ1の取外し器具は、短中長の長さの相違する三本の連結操作腕体2,3,4と、片持ち梁体5と、巻取具6で構成される。 The removal device for the earth retaining support jack 1 includes three connecting operation arm bodies 2, 3, 4 having different short, medium and long lengths, a cantilever body 5, and a winder 6 .
連結操作腕体2,3,4は、管体(筒状体)で形成され、ジャッキ1の操作棒12に外挿可能にし、装着時に操作棒12を押圧する固定ボルト21,31,41を設けてなる。 The connection operation arm bodies 2, 3, and 4 are formed of tubular bodies (tubular bodies), and are provided with fixing bolts 21, 31, and 41 that can be externally inserted into the operation rod 12 of the jack 1 and press the operation rod 12 when attached. It is provided.
また特に短連結操作腕体2の先端には、後述する巻取具6の先端係止鉤61の掛け止め部22を設け、中長両連結操作腕体3,4の先端には、巻取具6のチェーン62の摺動受け部32,42を設けて、更に長連結操作腕体4の基部側は、10〜20度の角度で折曲してなるものである。 Also especially short coupling operation arms 2 tip, a retaining portion 22 over the tip latching ledges 61 of the winding toggle 6 to be described later is provided, at the tip of the middle-length two joining operation arms 3 and 4, the take-up The slide receiving portions 32 and 42 of the chain 62 of the tool 6 are provided, and the base side of the long connecting operation arm body 4 is bent at an angle of 10 to 20 degrees.
片持ち梁体5は、基部51に支持梁部材Cに固定するナット部52を設け、中間部53は傾斜部とし、先部54には、係止透孔55を設けたもので、ナット部52の形成位置や中間部の傾斜形状、係止透孔55の形成位置は、片持ち梁体5を支持梁部材Cに固定した際に、前記係止透孔55の位置が、ジャッキ1の操作棒12の回動平面上であって、且つ長連結操作腕体4を操作棒12に装着した際の外端と同心円となる近傍となるようにしたものである。 The cantilever body 5 is provided with a nut portion 52 that is fixed to the support beam member C at the base portion 51, the intermediate portion 53 is an inclined portion, and the tip portion 54 is provided with a locking through hole 55. 52, the inclined shape of the intermediate portion, and the formation position of the locking through hole 55 are the positions of the locking through hole 55 when the cantilever 5 is fixed to the support beam member C. The operation bar 12 is on the rotation plane and is in the vicinity of a concentric circle with the outer end when the long connecting operation arm body 4 is mounted on the operation bar 12.
巻取具6は、レバーブロック(登録商標)と称されている周知の巻取器具で、先端に係止鉤61を設けたチェーン62の巻取りを行う本体63に本体係止鉤64を付設したものである。 The winder 6 is a well-known winder called a lever block (registered trademark), and a main body locking rod 64 is attached to a main body 63 that winds a chain 62 provided with a locking rod 61 at the tip. It is a thing.
而して土留支持ジャッキ1を取外すには、片持ち梁体5を支持梁部材Cに固定し、片持ち梁体5の先部を所定の箇所に配置する。次に前記片持ち梁体5の先部54に近い箇所の操作棒12から順次、長連結操作腕体4、中連結操作腕体3、短連結操作腕体2を装着する。 Thus, in order to remove the earth retaining support jack 1, the cantilever 5 is fixed to the support beam member C, and the tip of the cantilever 5 is disposed at a predetermined location. Next, the long connection operation arm body 4, the middle connection operation arm body 3, and the short connection operation arm body 2 are mounted in order from the operation rod 12 at a location near the tip 54 of the cantilever 5.
更に片持ち梁体5の係止透孔55に、巻取具6の本体63に付設した本体係止鉤64を引っ掛け、チェーン62を伸ばし、長連結操作腕体4の先端の摺動受け部42から中連結操作腕体3の先端の摺動受け部32に当接させて巻回し、先端係止鉤61を短連結操作腕体2の掛け止め部22に引っ掛ける。 Further, the main body locking rod 64 attached to the main body 63 of the winder 6 is hooked in the locking through hole 55 of the cantilever body 5, the chain 62 is extended, and the sliding receiving portion at the tip of the long connection operating arm body 4 is extended. From 42, the tip end of the middle connecting operation arm body 3 is brought into contact with the sliding receiving portion 32 and wound, and the tip engaging rod 61 is hooked on the latching portion 22 of the short connecting operation arm body 2.
そして巻取具6の本体63の操作レバーによってチェーン62の巻取り操作を行うと、チェーン62の引っぱり張力で、短連結操作腕体2は直接緩み方向への回転モーメントが与えられる。同時に中連結操作腕体3及び長連結操作腕体4は、チェーン当接箇所におけるチェーンの張り方向が相違し、これによって緩み方向に回転モーメントが与えられることになり、ジャッキ1の回転軸11は強い力で回転させられ、ジャッキ1が緩められるものである。 When the winding operation of the chain 62 is performed by the operation lever of the main body 63 of the winder 6 , the short coupling operation arm body 2 is directly given a rotational moment in the loosening direction by the pulling tension of the chain 62. At the same time, the middle connection operation arm 3 and the long connection operation arm 4 have different chain tension directions at the chain contact points, and thereby a rotational moment is applied in the loosening direction. It is rotated with a strong force and the jack 1 is loosened.
尚前記実施形態は、巻取具6として既存工具であるレバーブロック(登録商標)を採用したが、本発明方法は、特にこの器具に限定しているものではないので、レバーブロック(登録商標)以外の巻取器具を使用するようにしても良い。 In addition, although the said embodiment employ | adopted the lever block (trademark) which is an existing tool as the winding tool 6 , since this invention method is not specifically limited to this instrument, lever block (trademark) is used. Other winding devices may be used.
1 ジャッキ
11 回転軸
12 操作棒
13 押圧板
14 螺孔部
2 短連結操作腕体
21 固定ボルト
22 掛け止め部
3 中連結操作腕体
31 固定ボルト
32 摺動受け部
4 長連結操作腕体
41 固定ボルト
42 摺動受け部
5 片持ち梁体
51 基部
52 ナット部
53 中間部
54 先部
55 係止透孔
6 巻取具
61 先端係止鉤
62 チェーン
63 本体
64 本体係止鉤
DESCRIPTION OF SYMBOLS 1 Jack 11 Rotating shaft 12 Operation rod 13 Pressing plate 14 Screw hole part 2 Short connection operation arm body 21 Fixing bolt 22 Latching part 3 Middle connection operation arm body 31 Fixing bolt 32 Sliding receiving part 4 Long connection operation arm body 41 Fixation Bolt 42 Sliding receiving portion 5 Cantilever 51 Base 52 Nut 53 Intermediate 54 Tip 55 Locking through hole 6 Winding tool 61 Tip locking rod 62 Chain 63 Main body 64 Body locking rod
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005109577A JP4332127B2 (en) | 2005-04-06 | 2005-04-06 | Detaching support jack removal method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005109577A JP4332127B2 (en) | 2005-04-06 | 2005-04-06 | Detaching support jack removal method and device |
Publications (3)
Publication Number | Publication Date |
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JP2006291462A JP2006291462A (en) | 2006-10-26 |
JP2006291462A5 true JP2006291462A5 (en) | 2009-07-02 |
JP4332127B2 JP4332127B2 (en) | 2009-09-16 |
Family
ID=37412313
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JP2005109577A Expired - Fee Related JP4332127B2 (en) | 2005-04-06 | 2005-04-06 | Detaching support jack removal method and device |
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JP (1) | JP4332127B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103452121A (en) * | 2013-08-26 | 2013-12-18 | 中冶集团武汉勘察研究院有限公司 | Long pile and short pile combined single-row pile and horizontal internal support pile supporting structure and construction method thereof |
CN103790165B (en) * | 2014-01-23 | 2015-09-30 | 广厦湖北第六建设工程有限责任公司 | A kind ofly encircle and hunt down construction equipment and construction method thereof for soft soil property ultra-deep foundation pit |
CN108203980B (en) * | 2016-12-19 | 2023-06-09 | 中铁建工集团有限公司 | Method for dismantling pressurized concrete beam in deep foundation pit unsupported enclosure system |
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2005
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