JPH10218580A - Jack controller for construction/engineering work using screw jack together with hydraulic jack - Google Patents
Jack controller for construction/engineering work using screw jack together with hydraulic jackInfo
- Publication number
- JPH10218580A JPH10218580A JP2143097A JP2143097A JPH10218580A JP H10218580 A JPH10218580 A JP H10218580A JP 2143097 A JP2143097 A JP 2143097A JP 2143097 A JP2143097 A JP 2143097A JP H10218580 A JPH10218580 A JP H10218580A
- Authority
- JP
- Japan
- Prior art keywords
- jack
- jacks
- hydraulic
- screw
- construction
- 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.)
- Granted
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は建築及び土木工事に
おいて、構造物の受け換え工事、ジャッキアップあるい
はジャッキダウン工事等、重量物を支持する工事や工法
において、スクリュージャッキと水圧ジャッキとを併用
して、ジャッキに加わる荷重と、ジャッキの変位量とを
同時に制御する建築土木工事におけるジャッキ制御装置
に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method and a construction method in which a screw jack and a hydraulic jack are used in construction and civil engineering work, such as structural replacement work, jack-up or jack-down work, and other works or construction methods for supporting heavy objects. Further, the present invention relates to a jack control device in construction and civil engineering work for simultaneously controlling a load applied to a jack and a displacement amount of the jack.
【0002】[0002]
【従来の技術】建築及び土木工事では、構造物の受け換
え工事、ジャッキアップあるいはジャッキダウン工事等
で各種ジャッキが使用されている。2. Description of the Related Art In construction and civil engineering work, various jacks are used for structural replacement work, jack-up or jack-down work, and the like.
【0003】[0003]
【発明が解決しようとする課題】一般的にはコストの関
係で油圧ジャッキが使用されることが多いが、油圧ジャ
ッキは油漏れを生じる危険性があるため、長時間に亘る
荷重の保持や制御精度の点に問題がある。一方、スクリ
ュージャッキは機構的に荷重の保持力が高く、電動化す
ることで高い操作性と位置決め精度が得られるが、例え
ばジャッキアップ工事等でジャッキの変位を制御する場
合、通常ジャッキを支持する地盤、耐圧盤、杭等の剛性
が大きく、また各ジャッキに同一の荷重が加わるように
ジャッキを配置出来ないケースも多いことから、非常に
高精度でジャッキを同調させないと、各ジャッキ毎の荷
重のばらつきが大きくなり、特定のジャッキに大きな偏
荷重が負荷される危険性がある。In general, hydraulic jacks are often used due to cost considerations. However, hydraulic jacks have a risk of causing oil leakage, so that holding and controlling the load for a long period of time is difficult. There is a problem with accuracy. On the other hand, screw jacks have a high mechanical load holding force, and high operability and positioning accuracy can be obtained by electrification. The rigidity of the ground, pressure plate, pile, etc. is large, and there are many cases where jacks cannot be arranged so that the same load is applied to each jack.Therefore, unless jacks are synchronized with extremely high precision, the load of each jack And there is a risk that a large eccentric load is applied to a specific jack.
【0004】本発明はこのような問題点に鑑みて提案さ
れたもので、その目的とするところは建築土木工事に使
用されるスクリュージャッキと水圧ジャッキを併用した
ことによって建築土木工事の安全性の向上と、ジャッキ
の操作や制御の簡素化を図る点にある。[0004] The present invention has been proposed in view of the above problems, and an object of the present invention is to use a screw jack and a hydraulic jack which are used for construction civil engineering together to improve the safety of construction civil engineering. The point is to improve the operation and simplify the operation and control of the jack.
【0005】[0005]
【課題を解決するための手段】前記の目的を達成するた
め、本発明に係る建築土木工事におけるジャッキ制御装
置は、所要位置毎に配設された電動スクリュージャッキ
の頂面に夫々水圧ジャッキを載架し、水圧ジャッキ同士
をモーメントの釣り合い、荷重のバランス、支持する構
造物の剛性等を考慮してグルーピングし、同各水圧ジャ
ッキを高圧ホース又は管で連結し、前記複数の電動スク
リュージャッキにはジャッキの変位制御装置を設けて構
成されている。In order to achieve the above-mentioned object, a jack control apparatus for construction and civil engineering work according to the present invention mounts hydraulic jacks on tops of electric screw jacks arranged at required positions. The hydraulic jacks are grouped in consideration of the moment balance, the load balance, the rigidity of the supporting structure, etc., and the hydraulic jacks are connected by a high-pressure hose or a pipe. It is provided with a jack displacement control device.
【0006】[0006]
【発明の実施の形態】以下、本発明を本発明の好ましい
実施の形態を示す図面について説明する。図1におい
て、Aは、地盤、耐圧盤等の反力体D上に敷き鉄板、無
収縮グラウト、硬質ゴム等の反力体1、サンドル2を介
して所要位置毎に支持された電動スクリュージャッキ
で、同ジャッキ上部には、鋼板3、鋼製ブロック4を介
して水圧ジャッキB(商品名「フラットジャッキ」等)
が水平に載架され、構造物Cを支持している。図中5
は、構造物の鉛直方向への移動量を計測するための変位
計である。また、水圧ジャッキBと構造物Cの間には、
構造物の不陸を吸収し、水圧ジャッキに均等に荷重が加
わるように無収縮グラウトや硬質ゴム等の反力体1が装
填されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the drawings showing preferred embodiments of the present invention. In FIG. 1, A is an electric screw jack supported at each required position via a reaction member 1 such as an iron plate, non-shrink grout, hard rubber, and a sandle 2 laid on a reaction member D such as a ground or a pressure plate. In the upper part of the jack, a hydraulic jack B (trade name "Flat jack" etc.) is provided via a steel plate 3 and a steel block 4.
Are mounted horizontally, and support the structure C. 5 in the figure
Is a displacement meter for measuring the amount of vertical movement of the structure. Also, between the hydraulic jack B and the structure C,
A reaction body 1 such as non-shrinkable grout or hard rubber is loaded so as to absorb unevenness of the structure and apply a load evenly to the hydraulic jack.
【0007】水圧ジャッキBは、複数の水圧ジャッキを
荷重のバランス、モーメントの釣り合い、構造物の変位
等を考慮してグルーピングし、高圧ホースや鋼管、スト
ップバルブ9、継手11等の配管材7を用いて連結す
る。連結された各水圧ジャッキBは、パスカルの原理に
より互いに均一の圧力を保持するように作用する。水圧
ジャッキBの初期変位や圧力は、水圧ポンプ10を接続
して調整する。また、グループ毎に1台づつ圧力変換器
8を取り付けて、水圧ジャッキに加わる荷重を計測し、
オーバーロードにならないように荷重を監視する(図3
参照)。The hydraulic jack B groups a plurality of hydraulic jacks in consideration of load balance, moment balance, displacement of a structure, and the like, and a piping member 7 such as a high-pressure hose, a steel pipe, a stop valve 9, a joint 11, and the like. To connect. The connected hydraulic jacks B act so as to maintain a uniform pressure on each other according to the principle of Pascal. The initial displacement and pressure of the hydraulic jack B are adjusted by connecting the hydraulic pump 10. In addition, one pressure transducer 8 was installed for each group, and the load applied to the hydraulic jack was measured.
Monitor the load to prevent overload (Fig. 3
reference).
【0008】図4に示すような剛な基礎で支持され、a
−b断面方向に沈下・傾斜にした構造物Cをジャッキア
ップし、水平に戻す場合に、本発明のジャッキシステム
の適用例を説明する。スクリュージャッキAや水圧ジャ
ッキB等を先に説明した要領で組み立てて、図5に示す
ように8組のジャッキを杭間の耐圧版上に設置する。な
お杭頭部にジャッキを設置することも可能である。水圧
ジャッキBを2台づつ4グループにグルーピングして連
結する。ジャッキアップの手順は、いくつか考えられる
が、最初にグループ1、3のスクリュージャッキを同調
させながら上昇させて傾斜を修正し、次いで、全ジャッ
キを同調させながら、構造物を水平に保持した状態で上
昇させ、所定の位置までジャッキアップする。このよう
な操作では一般的に、構造物Cの重量分布の偏りや剛性
(変形性状)、ジャッキの配置(支持条件)によって、
各ジャッキに加わる荷重(ジャッキ反力)が均等になら
ず、スクリュージャッキで変位制御すると、ジャッキ間
で大きな荷重のばらつきが生じる。また、構造物Cの一
方をジャッキアップして傾斜させる場合、傾斜の方向に
合わせてジャッキ毎に変位量や速度を制御しないと、一
部のジャッキに過大な荷重が掛かることになる。図5の
例では、グループ2、4のジャッキを静止させ、グルー
プ1、3のスクリュージャッキを等変位で上昇させる
と、ジャッキ2、4、6、8の荷重が増大する。これに
対して、図5のように水圧ジャッキを連結すると、ジャ
ッキ2、4、6、8の荷重増加に伴い、この部分の水圧
ジャッキが圧縮されて、圧力の低いジャッキ1、3、
5、7が膨らみ、ジャッキ2、4、6、8とそれぞれ圧
力が均等になるように水圧が増す。この水圧ジャッキの
作用により、グループ1、3のスクリュージャッキを同
調させて、所定の変位まで制御すれば、自動的に荷重の
バランスが保持され、容易に構造物の傾斜を修正するこ
とができる。It is supported on a rigid foundation as shown in FIG.
-B An example of application of the jack system of the present invention when jacking up a structure C that has been sunk and inclined in a cross-sectional direction and returning it to a horizontal position will be described. The screw jack A, the hydraulic jack B and the like are assembled in the manner described above, and eight sets of jacks are installed on the pressure-resistant plate between the piles as shown in FIG. It is also possible to install a jack on the pile head. The hydraulic jacks B are grouped into two groups of two and connected. Several jack-up procedures are conceivable. First, the screw jacks of groups 1 and 3 are raised while synchronizing to correct the inclination, and then the structure is held horizontally while all jacks are synchronized. And jack up to the specified position. In general, in such an operation, the weight distribution of the structure C is deviated, the rigidity (deformability), and the arrangement of the jacks (support conditions) are changed.
When the load (jack reaction force) applied to each jack is not equalized and displacement control is performed with a screw jack, a large load variation occurs between jacks. In addition, when one of the structures C is jacked up and inclined, an excessive load is applied to some jacks unless the displacement and speed are controlled for each jack in accordance with the direction of the inclination. In the example of FIG. 5, when the jacks of the groups 2 and 4 are stopped and the screw jacks of the groups 1 and 3 are raised with equal displacement, the loads of the jacks 2, 4, 6, and 8 increase. On the other hand, when the hydraulic jacks are connected as shown in FIG. 5, the hydraulic jacks in this portion are compressed as the loads of the jacks 2, 4, 6, and 8 increase, and the jacks 1, 3, and
The water pressure is increased so that the pressures of 5, 7 expand and the pressures of jacks 2, 4, 6, 8 become equal to each other. By adjusting the screw jacks of the groups 1 and 3 by the action of the hydraulic jack and controlling the screw jacks to a predetermined displacement, the load balance is automatically maintained, and the inclination of the structure can be easily corrected.
【0009】独立基礎と杭で支持された一般的な集合住
宅のジャッキアップに本システムを適用して実施例を図
6乃至図8に示す。この場合、先の事例と同様に各独立
基礎毎に2〜4組のジャッキを配置し、独立基礎毎に水
圧ジャッキをグルーピングして連結する。ジャッキアッ
プ時には、沈下量に合わせて各独立基礎毎に目標変位を
設定し、スクリュージャッキを同調制御する。この場合
も、水圧ジャッキの作用により、荷重のバランスが保持
され、1つの基礎内に設置されたスクリュージャッキは
等変位で制御すれば良い。FIGS. 6 to 8 show an embodiment in which the present system is applied to jack-up of a general apartment house supported by an independent foundation and a pile. In this case, as in the previous case, two to four sets of jacks are arranged for each independent foundation, and hydraulic jacks are grouped and connected for each independent foundation. When jacking up, the target displacement is set for each independent foundation in accordance with the amount of settlement, and the screw jack is tuned. Also in this case, the load balance is maintained by the action of the hydraulic jack, and the screw jack installed in one foundation may be controlled with equal displacement.
【0010】図9は、前記スクリュージャッキの制御シ
ステムの一例を示すものである。パソコン(イ)で動作
させるスクリュージャッキAを指定し、個々のスクリュ
ージャッキAを制御するローカルコントローラ(ロ)に
目標値(変位あるいは荷重)を指示して動作命令を発
し、所定のスクリュージャッキAを一斉に同調制御す
る。同時に変位や荷重をローカルコントローラで(ロ)
計測監視し、目標値に到達した時点でスクリュージャッ
キを停止させる。さらに全スクリュージャッキの変位や
荷重の計測結果は、逐次パソコン(イ)に転送表示さ
れ、スクリュージャッキを変位で制御する場合は、荷重
のオーバーロードを監視し、荷重で制御する場合は、変
位のリミットを監視する。図8中の(ハ)は、各スクリ
ュージャッキAに電力を供給する配電盤で、インバータ
が内蔵され、電源周波数を変えることによってスクリュ
ージャッキAの速度を調整することができる。配電盤
は、1〜2グループ程度に1台配置する。パソコン
(イ)、各ローカルコントローラ(ロ)、配電盤(ハ)
は、LANケーブル(ニ)で接続し、LANコントロー
ラ(ホ)でそれらの機器の間の通信を制御する。FIG. 9 shows an example of the screw jack control system. A screw jack A to be operated by a personal computer (a) is designated, a target value (displacement or load) is instructed to a local controller (b) for controlling each screw jack A, and an operation command is issued, and a predetermined screw jack A is issued. Synchronous control is performed simultaneously. At the same time, the displacement and load are controlled by the local controller
Measure and monitor, and stop the screw jack when the target value is reached. Furthermore, the measurement results of the displacement and load of all screw jacks are sequentially transferred and displayed on the personal computer (a). When controlling the screw jack by displacement, monitor the overload of the load, and when controlling by the load, measure the displacement of the screw jack. Monitor limits. (C) in FIG. 8 is a switchboard for supplying power to each screw jack A, which has a built-in inverter and can adjust the speed of the screw jack A by changing the power supply frequency. One switchboard is arranged for about one or two groups. Personal computer (a), each local controller (b), switchboard (c)
Are connected by a LAN cable (d), and communication between these devices is controlled by a LAN controller (e).
【0011】[0011]
【発明の効果】本発明に係るジャッキ制御装置は前記し
たように所定位置毎に電動スクリュージャッキを配設し
て構造物等を支持することによって、同電動スクリュー
ジャッキはその機構上、高い荷重の保持力と位置決め精
度を有し、電動化することによって自動制御も容易にな
る。As described above, the jack control device according to the present invention arranges the electric screw jack at each predetermined position to support a structure or the like. It has a holding force and a positioning accuracy, and automatic control is facilitated by electrification.
【0012】また前記各電動スクリュージャッキの頂面
には夫々水圧ジャッキが載架され、水圧ジャッキ同士を
モーメントの釣り合い、荷重のバランス、支持する構造
物の剛性等を考慮してグルーピングし、同各水圧ジャッ
キを高圧ホース又は管で連結したので、パスカルの原理
により各水圧ジャッキが均一の圧力を保持するように作
用して、電動スクリュージャッキの設置状況の違い等に
よって荷重のばらつきを生じ、特定のジャッキに偏荷重
が加わると、連結された前記各水圧ジャッキの水圧が均
一に保持されるように常に変形するため、ジャッキに加
わる荷重のバランスが自動的に保持される。A hydraulic jack is mounted on the top surface of each of the electric screw jacks, and the hydraulic jacks are grouped in consideration of moment balance, load balance, rigidity of a supporting structure, and the like. Since the hydraulic jacks were connected by high-pressure hoses or pipes, each hydraulic jack acts to maintain a uniform pressure by the principle of Pascal, causing variations in the load due to differences in the installation status of the electric screw jack, etc. When an unbalanced load is applied to the jack, the jacks are constantly deformed so that the hydraulic pressure of the connected hydraulic jacks is maintained uniformly, so that the balance of the load applied to the jacks is automatically maintained.
【0013】また本発明によれば前記電動スクリュージ
ャッキの作用で特定のジャッキへの荷重の集中を自動的
に回避することができ、この結果、安全性が向上し、ま
た荷重変動は制御あるいは監視せずに電動スクリュージ
ャッキの変位のみを目標の位置まで制御すればよく、ジ
ャッキの制御や監視方法を簡易化しうるものである。Further, according to the present invention, the concentration of a load on a specific jack can be automatically avoided by the action of the electric screw jack, and as a result, safety is improved, and load fluctuation is controlled or monitored. It is sufficient to control only the displacement of the electric screw jack to the target position without doing so, and the control and monitoring method of the jack can be simplified.
【図1】本発明に係る建築土木工事におけるジャッキ制
御装置の一実施例を示す立面図である。FIG. 1 is an elevational view showing an embodiment of a jack control device in civil engineering work according to the present invention.
【図2】水圧ジャッキの平面図である。FIG. 2 is a plan view of a hydraulic jack.
【図3】水圧ジャッキの連結方法を示す平面図である。FIG. 3 is a plan view showing a method of connecting a hydraulic jack.
【図4】本発明を構造物の沈下、傾斜修正工事に適用し
た実施例を示す縦断面図である。FIG. 4 is a longitudinal sectional view showing an embodiment in which the present invention is applied to subsidence and inclination correction work of a structure.
【図5】図4におけるジャッキ配置平面図である。FIG. 5 is a plan view of a jack arrangement in FIG. 4;
【図6】構造物の沈下、傾斜修正工事に適用した他の実
施例を示す縦断面図である。FIG. 6 is a longitudinal sectional view showing another embodiment applied to the settlement and inclination correction work of a structure.
【図7】図6の立面図である。FIG. 7 is an elevation view of FIG. 6;
【図8】図6のジャッキグループにおけるジャッキ配置
図である。FIG. 8 is a jack arrangement diagram in the jack group of FIG. 6;
【図9】電動スクリュージャッキ制御システム及びロー
カルコントローラの説明図である。FIG. 9 is an explanatory diagram of an electric screw jack control system and a local controller.
A 電動スクリュージャッキ B 水圧ジャッキ C 構造物 D 基礎 E 既設杭 F 配電盤 G 分電盤 CPU パソコン LAN コントローラ LC ローカルコントローラ 1 反力体 2 サンドル 3 鋼板 4 鋼製ブロック 5 変位計 6 充填材 7 高圧ゴムホース又は鋼管 8 圧力変換器 9 ストップバルブ 10 手動水圧ポンプ 11 継手 A Electric screw jack B Hydraulic jack C Structure D Foundation E Existing pile F Distribution board G Distribution board CPU PC LAN controller LC Local controller 1 Reaction body 2 Sandle 3 Steel plate 4 Steel block 5 Displacement gauge 6 Filler 7 High pressure rubber hose or Steel pipe 8 Pressure transducer 9 Stop valve 10 Manual hydraulic pump 11 Joint
Claims (1)
ジャッキの頂面に夫々水圧ジャッキを載架し、水圧ジャ
ッキ同士をモーメントの釣り合い、荷重のバランス、支
持する構造物の剛性を考慮してグルーピングし、同各水
圧ジャッキを高圧ホース又は管で連結し、前記複数の電
動スクリュージャッキにはジャッキの変位制御装置を設
けてなることを特徴とするスクリュージャッキと水圧ジ
ャッキを併用した建築土木工事におけるジャッキ制御装
置。1. A hydraulic jack is mounted on a top surface of an electric screw jack disposed at each required position, and the hydraulic jacks are balanced in terms of moment, load balance, and rigidity of a structure supporting the hydraulic jacks. Grouping and connecting each hydraulic jack with a high-pressure hose or pipe, and in the civil engineering work using a combination of a screw jack and a hydraulic jack, wherein the plurality of electric screw jacks are provided with a jack displacement control device. Jack control device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02143097A JP3930088B2 (en) | 1997-02-04 | 1997-02-04 | Jack control device for civil engineering works using screw jack and hydraulic jack |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP02143097A JP3930088B2 (en) | 1997-02-04 | 1997-02-04 | Jack control device for civil engineering works using screw jack and hydraulic jack |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10218580A true JPH10218580A (en) | 1998-08-18 |
JP3930088B2 JP3930088B2 (en) | 2007-06-13 |
Family
ID=12054782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP02143097A Expired - Lifetime JP3930088B2 (en) | 1997-02-04 | 1997-02-04 | Jack control device for civil engineering works using screw jack and hydraulic jack |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3930088B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010089886A (en) * | 2008-10-07 | 2010-04-22 | Jfe Civil Engineering & Construction Corp | Stroke control method of hydraulic jack for demolition of structure |
KR101032686B1 (en) | 2010-05-10 | 2011-05-06 | 임선영 | Automatic control apparatus for lifting jack system |
-
1997
- 1997-02-04 JP JP02143097A patent/JP3930088B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010089886A (en) * | 2008-10-07 | 2010-04-22 | Jfe Civil Engineering & Construction Corp | Stroke control method of hydraulic jack for demolition of structure |
KR101032686B1 (en) | 2010-05-10 | 2011-05-06 | 임선영 | Automatic control apparatus for lifting jack system |
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