JPH0554521B2 - - Google Patents
Info
- Publication number
- JPH0554521B2 JPH0554521B2 JP63150936A JP15093688A JPH0554521B2 JP H0554521 B2 JPH0554521 B2 JP H0554521B2 JP 63150936 A JP63150936 A JP 63150936A JP 15093688 A JP15093688 A JP 15093688A JP H0554521 B2 JPH0554521 B2 JP H0554521B2
- Authority
- JP
- Japan
- Prior art keywords
- lifting
- concrete pavement
- jack
- pavement slab
- curved surface
- 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 - Lifetime
Links
- 239000004567 concrete Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Landscapes
- Road Repair (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、コンクリート舗装された路面等の部
分的な沈下を修復し、路面全体を平らにする沈下
したコンクリート舗装版の高さ修復方法におい
て、その沈下したコンクリート舗装版を扛上する
方法に関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for restoring the height of a sunken concrete pavement slab for restoring partial subsidence of a concrete paved road surface and leveling the entire road surface. , relates to a method for lifting the submerged concrete pavement slab.
（従来の技術）
コンクリート舗装の部分的な沈下の修復方法と
して従来は、舗装表面に盛り上げる、いわゆるオ
ーバーレイや、沈下部分の舗装版全体を取り除き
新たに打ち直すといつた方法が採られていた。(Prior Art) Conventionally, methods for repairing partial subsidence in concrete pavement have included the use of a so-called overlay, which is raised on the pavement surface, or the removal of the entire pavement slab in the subsidence area and recasting.
また予め、沈下を想定し最初の舗装版打設成形
時に舗装面の全域に一定間隔毎にリフトアツプ用
の金具を埋め込んでおくことも提案されている。
（特開昭61−169504号公報）
（発明が解決しようとする課題）
しかし、従来のオーバーレイによる補修はコン
クリート舗装版表面が高くなるため、側溝や縁石
まで施工し直さなければならなくなることが多
く、しかも盛り上げた部分と盛り上げない部分と
の境界の段差をなくすことができないため、段差
が不都合な場所では沈下の生じていない部分まで
広範囲に施工する必要が生じる。更に表面コンク
リートを打設するため、コンクリートの養生が必
要となり、長時間にわたつて交通を遮断しなけれ
ばならない等の問題がある。 It has also been proposed that, in anticipation of subsidence, lift-up metal fittings should be embedded at regular intervals throughout the entire pavement surface during the initial casting and forming of the pavement slab.
(Japanese Unexamined Patent Publication No. 169504/1983) (Problem to be solved by the invention) However, since the conventional overlay repair increases the height of the concrete pavement surface, it is often necessary to re-install the gutter and curb. Moreover, since it is not possible to eliminate the level difference at the boundary between the raised part and the non-raised part, in places where the difference in level is inconvenient, it is necessary to carry out construction over a wide area, including areas where no subsidence has occurred. Furthermore, since surface concrete is placed, curing of the concrete is required, and there are problems such as having to block traffic for a long period of time.
またコンクリート舗装版を新たに打ち直す方法
は、新舗装と同じだけ経費を要し、しかもオーバ
ーレイよりも更に長期間の交通遮断を要し、更に
既設部分との連結が必要となる場合には作業空間
に限りがあるため作業性に問題が生じる等の問題
がある。 In addition, the method of recasting a new concrete pavement requires the same cost as new pavement, requires a longer period of traffic interruption than overlay, and requires additional work space if it is necessary to connect with the existing section. There are problems such as problems with workability due to the limited amount of space available.
更に予めリフトアツプ用の金具を設けておく方
法では、実際には沈下しない部分にも設けられる
可能性が高く不経済であり、最初に形成する舗装
版がコスト高となるという問題がある。 Furthermore, in the method of providing lift-up metal fittings in advance, there is a high possibility that they will be installed in areas that will not actually sink, which is uneconomical, and there is a problem that the paving slab that is initially formed becomes expensive.
そこでこのような従来の問題を解決する方法と
して、コンクリート舗装版の沈下域に作業穴をあ
け、これにジヤツキを装着し、その沈下域を表面
が平らになるまで持ち上げて裏込めをなすように
した高さ修復方法が提案された。 Therefore, as a way to solve this conventional problem, we drilled a working hole in the sinking area of the concrete pavement slab, attached jacks to it, and lifted the sinking area until the surface was flat, creating a backfill. A height restoration method was proposed.
本発明は、このようにジヤツキを使用して持ち
上げることにより高さを修復する方法において、
既存のコンクリート舗装版を損傷することなく、
正確かつ迅速にしかも少い資材にて経済的にコン
クリート舗装版表面を平らにできる沈下したコン
クリート舗装版の扛上方法の提供を目的としたも
のである。 The present invention provides a method for restoring height by lifting using jacks as described above.
without damaging existing concrete pavement slabs.
The object of the present invention is to provide a method for lifting up a sunken concrete pavement slab by which the surface of the concrete pavement slab can be flattened accurately, quickly, and economically using a small amount of materials.
（課題を解決するための手段）
上述の如き目的を達成するための本発明の特徴
は、コンクリート舗装版の沈下域の略全域に格子
状配置に多数の扛上作業穴を該コンクリート舗装
版の表裏に貫通させて開口させ、該扛上作業穴下
の反力盤に扛上ジヤツキを支持させて、前記コン
クリート舗装版を扛上させ、その扛上によつてで
きたコンクリート舗装版下の空間に充填材を充填
する沈下したコンクリート舗装版の扛上方法にお
いて、前記沈下域の前記扛上作業穴に扛上ジヤツ
キを装着し、その扛上ジヤツキ装着域の沈下域曲
面をあらかじめ計測しておき、該沈下域曲面と最
終扛上曲面との間に前記コンクリート舗装版の許
容曲げ量に合せた中間扛上曲面をあらかじめ設定
しておき、各扛上ジヤツキを各中間扛上曲面に対
応する高さに達する毎に停止させ、全扛上ジヤツ
キが所定の中間扛上曲面に達するのを待つて次の
中間扛上曲面、更には最終扛上曲面まで間欠的に
扛上させることに存する。(Means for Solving the Problems) A feature of the present invention for achieving the above-mentioned objects is that a large number of lifting holes are arranged in a grid pattern over substantially the entire subsidence area of the concrete pavement slab. An opening is made through the front and back sides, a lifting jack is supported on the reaction plate under the lifting work hole, and the concrete paving slab is lifted up, and a space under the concrete pavement created by the lifting. In the method for raising a sunken concrete pavement slab in which a filler is filled, a lifting jack is attached to the lifting work hole in the sinking area, and the curved surface of the sinking area in the area where the lifting jack is installed is measured in advance. An intermediate lifting surface corresponding to the allowable bending amount of the concrete pavement slab is set in advance between the settlement area curved surface and the final lifting curved surface, and each lifting jack is set at a height corresponding to each intermediate lifting curved surface. The method consists in stopping the lifting jack every time the jack reaches a predetermined intermediate lifting surface, waiting for all the lifting jacks to reach a predetermined intermediate lifting surface, and then intermittently lifting the jack up to the next intermediate lifting surface and further to the final lifting surface.
（作用）
修復しようとする舗装がコンクリート構造であ
る場合、局部的に一定以上の強い曲げ力が加わる
と損傷される。(Function) If the pavement to be repaired has a concrete structure, it will be damaged if a strong bending force above a certain level is applied locally.
本発明方法では、沈下域の一部に扛上ジヤツキ
を装着し、部分的に持ち上げるものであるため、
既扛上部分と未扛上部分とに高低差が生じること
となるが、数列配置の扛上ジヤツキにより扛上量
を列単位に順次違えることにより、扛上時のコン
クリート舗装版の湾曲度が積極的にコントロール
されることとなる。そして、その湾曲度は複数段
階の扛上予定曲面をあらかじめ設定しておき、多
段階に分けて扛上させることにより、最終高さに
至る以前においても、コンクリート舗装版の湾曲
度がコントロールルされる。即ち、広い沈下域の
一部分に扛上ジヤツキを装着して扛上させる場
合、扛上部分と未扛上部分とが滑らかな曲面にて
連続されなければ、両部分間に亀裂が生じること
となる。従つて、滑らかな曲面となるように各扛
上ジヤツキの扛上高さをそれぞれ違える必要があ
るが、ジヤツキは通常、設定高さまで同じ速度で
動作する。従つて、最終扛上曲面が滑らかであつ
てもその途中において局部的な強い曲げが生じる
ことがある。しかし、各段階の扛上予定曲面に動
作が区切られ、局部的な曲げ力も各段階間の範囲
内におさえられることとなり、亀裂につながる湾
曲を生じさせないようにコントロールしつつ持ち
上げられる。 In the method of the present invention, a lifting jack is attached to a part of the subsidence area to partially lift it.
There will be a height difference between the lifted part and the unlifted part, but by sequentially changing the lifting amount for each row with lifting jacks arranged in several rows, the degree of curvature of the concrete pavement slab at the time of lifting can be reduced. It will be actively controlled. The degree of curvature of the concrete pavement can be controlled even before reaching the final height by setting in advance the curved surface to be lifted in multiple stages and lifting it in multiple stages. Ru. In other words, when a lifting jack is attached to a part of a wide subsidence area to lift it up, if the lifted part and the unlifted part are not continuous on a smooth curved surface, cracks will occur between the two parts. . Therefore, it is necessary to vary the lifting height of each lifting jack so as to obtain a smooth curved surface, but the jacks usually operate at the same speed up to the set height. Therefore, even if the final lifting curved surface is smooth, strong local bending may occur in the middle. However, the movement is divided into curved surfaces to be lifted at each stage, and the local bending force is kept within the range between each stage, so that the lifting is controlled in a way that prevents curvature that could lead to cracks.
（実施例）
次に本発明をプレストレストコンクリート舗装
版（以下PC舗装版と記す）の扛上に実施した一
例を図面について説明する。(Example) Next, an example in which the present invention is applied to the construction of a prestressed concrete pavement slab (hereinafter referred to as a PC pavement slab) will be described with reference to the drawings.
第１図イ〜チは修復工程の概略を順に図示して
いる。まず、PC舗装版Ａの沈下域Ｂ（第２図に示
す）の形状及びその各部分の高さを全域にわたつ
て測定する。この測定は、例えば第１図にイに示
すように通常使用されているレベル１及び目盛尺
２等、従来使用されている各種の方法のいずれか
を選択して行う。 1 to 1 sequentially illustrate the outline of the repair process. First, the shape of the subsidence area B (shown in FIG. 2) of the PC pavement version A and the height of each part thereof are measured over the entire area. This measurement is performed by selecting one of various conventionally used methods, such as the commonly used level 1 and scale scale 2 as shown in FIG. 1A.
次いで第１図ロ及び第２図に示すように沈下域
Ｂ全域にわつて作業穴３を形成する。この作業穴
３は、直径約150〓程度の円形にコア抜きカツタ
ー４により舗装版Ａの表面から裏面に貫通させて
開口させる。また作業穴３は、第２図に示すよう
に４〜5m程度の間隔を隔てて格子状配置に開口
させる。 Next, as shown in FIG. 1B and FIG. 2, a working hole 3 is formed throughout the subsidence area B. This working hole 3 is made in a circular shape with a diameter of about 150 mm by penetrating the paving slab A from the front surface to the back surface using a core cutter 4. Further, the working holes 3 are opened in a grid-like arrangement at intervals of about 4 to 5 m, as shown in FIG.
作業穴３を開口させた後、第１図ハに示すよう
に各作業穴３毎に、その穴下及びその周辺の基礎
路盤５の表面部分を掘削し、舗装版下作業空間６
を形成する。この掘削は、例えば回転することに
より半径方向に拡径する掘削刃を有する電動工具
を使用し、バキユームにより掘削土を吸い出すこ
とによつて行う。次いで、第１図ニに示すように
その掘削穴の底面にコンクリートを打設して表面
が平らな反力盤７を形成する。 After opening the working holes 3, as shown in FIG.
form. This excavation is performed, for example, by using a power tool having a cutting blade that expands in diameter in the radial direction when rotated, and by sucking out the excavated soil with a vacuum chamber. Next, as shown in FIG. 1D, concrete is poured into the bottom of the excavated hole to form a reaction plate 7 with a flat surface.
また基礎路盤５の強度が、後述するジヤツキの
反力を充分に支持し得るものである場合には、コ
ンクリートを打設せずに掘削面８そのものを反力
盤としてもよい。 Further, if the strength of the foundation roadbed 5 is sufficient to support the reaction force of jacking, which will be described later, the excavated surface 8 itself may be used as a reaction force plate without pouring concrete.
反力盤７の成形後、第１図ホ及び第３図に示す
ように作業穴３にジヤツキ装着金具１０を装着す
るとともに、その中央の反力盤７上に固定金具１
１を設置する。ジヤツキ装着金具１０は、第３
図、第４図に示すように作業穴３内に位置させる
円筒部１２と、その円筒部１２の下端外周から
PC舗装版Ａ下に突出させた張出部１３とからな
つている。張出部１３は第４図に示すように円盤
を複数に分割した分割片１３ａを、舗装版下作業
空間６内にて円筒部１２の下端外周の環状凹溝１
２ａ内に挿入し、各分割片１３ａ相互間及び分割
片１３ａと円筒部１２との間を溶接して一体化さ
せる。第４図中１４は溶接点を示している。また
固定金具１１は円盤状に形成され、反力盤７上に
載置した状態で上端がジヤツキ装着金具１０の円
筒部１２内に挿入される高さに複数枚重ねて柱状
となす。 After forming the reaction force plate 7, as shown in FIG. 1E and FIG.
Install 1. The jack mounting bracket 10 is the third
As shown in FIG.
It consists of an overhanging portion 13 that protrudes below the PC pavement version A. As shown in FIG. 4, the overhanging part 13 divides the disc into a plurality of divided pieces 13a into the annular groove 1 on the outer periphery of the lower end of the cylindrical part 12 in the paving slab working space 6.
2a, and weld the divided pieces 13a to each other and the divided pieces 13a and the cylindrical part 12 to integrate them. 14 in FIG. 4 indicates a welding point. Further, the fixing metal fittings 11 are formed in a disk shape, and a plurality of the fixing metal fittings 11 are piled up to form a columnar shape at a height such that the upper end is inserted into the cylindrical portion 12 of the jack mounting metal fitting 10 when placed on the reaction force plate 7.
ジヤツキ装着金具１０は円筒部１２の内面に雌
ねじ１５が刻設され、これに外周に雄ねじが刻設
されたシリンダ状のロツクナツト１６が螺嵌され
ている。このロツクナツト１６は、下端面に前述
した固定金具１１の上端周縁部が当接される大き
さに形成されているものであり、その上端面には
これを旋回して螺進退させるための工具係合穴１
７が開口されている。 The jack mounting fitting 10 has a female thread 15 cut into the inner surface of a cylindrical portion 12, into which a cylindrical lock nut 16 having a male thread cut into the outer periphery is screwed. This lock nut 16 is formed in a size such that the upper end peripheral edge of the above-mentioned fixing metal fitting 11 comes into contact with the lower end surface, and a tool engagement member is provided on the upper end surface for turning the nut and screwing it forward and backward. Matching hole 1
7 is open.
このように構成されるジヤツキ装着金具１０及
び固定金具１１を各作業穴３毎に装着して準備作
業を終え、次いで第１図ヘ，トに示すように扛上
ジヤツキ２０を使用して持ち上げ作業を行う。な
お前述した準備作業中において、昼間の路面使用
時には、第３図に示すように各作業穴３に鋼製の
蓋１８を装着しておく。これによつて車輌の走行
に影響を及ぼさない。 After completing the preparatory work by installing the jack attachment fittings 10 and fixing fittings 11 constructed in this manner in each work hole 3, the lifting work is then carried out using the lifting jack 20 as shown in Fig. 1F and G. I do. During the preparatory work described above, a steel cover 18 is attached to each working hole 3 as shown in FIG. 3 when the machine is used on a road surface during the day. This does not affect the running of the vehicle.
持ち上げ作業に使用する扛上ジヤツキ２０は、
第５図に示すように周囲に窓２１ａを有する円筒
状のラムチエア２１を有し、そのラムチエア２１
の下端を前述したジヤツキ装着金具１０の円筒部
１２の上端部に螺嵌させるようにしている。ラム
チエア２１の上端には油圧シリンダ２２の下端外
周が固定され、その油圧シリンダ２２の下端面中
央にラム２３が油圧により出入されるようにして
いる。ラム２３の先着に円筒状をした鋼製のエク
ステンシヨンロツド２４の上端が当接されてい
る。このエクステンシヨンロツド２４は、その下
端を前述した固定金具１１の上端に当接させてお
り、ラム２３が押し出されることによりエクステ
ンシヨンロツド２４を介して固定金具１１の上面
が押され、その反力によつてラムチエア２１が引
き上げられ、ジヤツキ装着金具１０を介して舗装
版Ａが扛上されるようにしている。一方ラムチエ
ア２１とエクステンシヨンロツド２４の間には、
これらと同心配置に円筒状をしたナツト旋回工具
２５が挿入されている。このナツト旋回工具２５
には、下端にナツト係合突起２６が突設され、こ
れをロツクナツト１６の工具係合穴１７に嵌合さ
せるようにしており、ラムチエア２１の窓２１ａ
から工具２５を旋回させることによつてロツクナ
ツト１６を螺進退させるようにしている。 The lifting jack 20 used for lifting work is
As shown in FIG.
The lower end thereof is screwed into the upper end of the cylindrical portion 12 of the jack mounting fitting 10 described above. The lower end outer periphery of a hydraulic cylinder 22 is fixed to the upper end of the ram tie air 21, and a ram 23 is moved in and out of the center of the lower end surface of the hydraulic cylinder 22 by hydraulic pressure. The upper end of a cylindrical steel extension rod 24 is brought into contact with the first end of the ram 23. This extension rod 24 has its lower end in contact with the upper end of the above-mentioned fixture 11, and when the ram 23 is pushed out, the upper surface of the fixture 11 is pushed through the extension rod 24. The ram chair air 21 is pulled up by the reaction force, and the paving slab A is lifted up via the jack fitting 10. On the other hand, between the ram chair air 21 and the extension rod 24,
A cylindrical nut turning tool 25 is inserted concentrically with these. This nut turning tool 25
A nut engaging protrusion 26 is protruded from the lower end of the lock nut 16 and is fitted into the tool engaging hole 17 of the lock nut 16.
By turning the tool 25 from the top, the lock nut 16 is screwed forward and backward.
また油圧シリンダ２２の上端には、ラム２３と
ともに往復動作する出入ロツド２７が突出され、
その外側に出入ロツド２７の動作量を測定する扛
上量検出センサー２８が備えられている。 Further, an in/out rod 27 that reciprocates together with the ram 23 is protruded from the upper end of the hydraulic cylinder 22.
A lifting amount detection sensor 28 for measuring the amount of movement of the inlet/outlet rod 27 is provided on the outside thereof.
持ち上げに際しては、上述の如く構成される扛
上ジヤツキ２０を、沈下域Ｂの一方側の縁部から
第６図に示すように、平行に４列配置に各作業穴
に装着する。次いで、第７図に示すように先に測
定した沈下域曲面３０及びPC舗装版Ａの許容曲
げ量を考慮して、数段階の扛上予定曲面、３１
ａ，３１ｂ，３１ｃを予め設定しておき、まず第
１段階の扛上予定曲面３１ａに到るまで各ジヤツ
キ列２０1〜２０4のジヤツキを動作させて一旦停
止させる。同様にして第２段階から最終段階の扛
上予定曲面３１ｂ，３１ｃに順に持ち上げる。 When lifting, the lifting jacks 20 constructed as described above are installed in each working hole in four parallel rows starting from one edge of the sinking area B, as shown in FIG. Next, as shown in FIG. 7, taking into account the previously measured subsidence area curved surface 30 and the allowable bending amount of the PC pavement version A, several stages of the planned lifting curved surface 31 are prepared.
a, 31b, and 31c are set in advance, and the jacks in each of the jack rows 20 1 to 20 4 are first operated until reaching the first-stage lifting planned curved surface 31a, and then stopped once. In the same way, it is lifted in order from the second stage to the final stage of lifting planned curved surfaces 31b and 31c.
なお、ここでは３段階のみ示しているが実際に
は最小扛上高さが0.2mm程度になるように各段階
の扛上予定曲面を設定する。 Although only three stages are shown here, the expected lifting surface for each stage is actually set so that the minimum lifting height is about 0.2 mm.
次いで第１列目のジヤツキ列２０1の各ジヤツ
キにおいて、ナツト旋回工具２６を操作してロツ
クナツト１６を下降させ、その下端面を固定金具
１１の上端に当接させる。これによつてジヤツキ
２０を取り外してもPC舗装版Ａは固定金具１１
に支持される。この状態で第１列目の各ジヤツキ
２０を取り外し、第５列目に移動させて各作業穴
３に装着し、前述と同様に数段階の扛上予定曲面
に合わせて扛上させる。 Next, in each jack of the first row of jacks 201 , the nut turning tool 26 is operated to lower the lock nut 16 so that its lower end surface abuts the upper end of the fixing metal fitting 11. As a result, even if the jack 20 is removed, the PC pavement version A remains fixed at the fixing bracket 11.
Supported by In this state, each jack 20 in the first row is removed, moved to the fifth row, installed in each working hole 3, and lifted in accordance with the curved surface to be lifted in several stages in the same manner as described above.
この各扛上作業には第８図に示す自動コントロ
ール装置を使用する。この装置は、油圧ポンプ４
０から各列毎に同じ油圧を供給する油圧制御盤４
１を有している。また各扛上ジヤツキ２０の扛上
量検出センサー２８からの検出信号は変位計４２
に送られるようにしている。変位計４２では、あ
らかじめ記憶させた扛上予定曲面に対応した計画
量とセンサー２８からの検出量と比較し、検出量
が計画量に達するまで操作盤４３に動作信号を発
するようにしている。操作盤４３では、油圧制御
盤に内蔵している各油圧ジヤツキ２０の流路開閉
用の電磁弁をON，OFFコントロールするように
しており、扛上ジヤツキ２０をその各列を単位
に、前記変位計４２からの制御信号に応じて動作
させるように電磁弁をコントロールすると同時
に、各列内の各扛上ジヤツキの扛上速度にばらつ
きが出ないように0.2〜0.8〓を単位に間欠的に扛
上させ、各列毎に全扛上ジヤツキが単位長さづつ
動作されるようにコントロールしている。また全
扛上ジヤツキの油圧供給路に圧力センサー４４が
設けられ、その信号を荷重計４５に送るようにし
ている。荷重計４５では許容最大荷重をあらかじ
め記憶させておき、その許容最大荷重と圧力セン
サー４４によつて検出した荷重と比較して操作盤
に制御信号を送り、圧力センサー４４により検出
された圧力、即ち各扛上ジヤツキにかかる負荷が
一定以上になつた時には電磁弁を閉じ油圧の供給
を停止させるようにしている。 An automatic control device shown in FIG. 8 is used for each lifting operation. This device consists of hydraulic pump 4
Hydraulic control panel 4 that supplies the same hydraulic pressure to each row from 0
1. Further, the detection signal from the lifting amount detection sensor 28 of each lifting jack 20 is transmitted to the displacement meter 42.
I am trying to send it to. The displacement meter 42 compares the detected amount from the sensor 28 with a planned amount corresponding to a planned lifting surface stored in advance, and issues an operation signal to the operation panel 43 until the detected amount reaches the planned amount. The operation panel 43 controls ON/OFF the solenoid valves for opening and closing the flow paths of each hydraulic jack 20 built into the hydraulic control panel, and controls the displacement of the lifting jacks 20 in units of each row. At the same time, the solenoid valve is controlled to operate according to the control signal from the total 42, and at the same time, the lifting jacks in each row are lifted intermittently in increments of 0.2 to 0.8〓 to prevent variations in the lifting speed of each lifting jack. It is controlled so that the entire lifting jack is operated by a unit length for each row. Further, a pressure sensor 44 is provided in the hydraulic pressure supply path of all lifting jacks, and its signal is sent to a load meter 45. The load cell 45 stores the maximum allowable load in advance, compares the maximum allowable load with the load detected by the pressure sensor 44, sends a control signal to the operation panel, and calculates the pressure detected by the pressure sensor 44, i.e. When the load on each lifting jack exceeds a certain level, a solenoid valve is closed to stop the supply of hydraulic pressure.
なお、図中４６は計算機である。 Note that 46 in the figure is a computer.
このようにして順次ジヤツキ２０を、列を単位
にして装着位置を移動させつつ、沈下域Ｂ全体の
扛上を行う。 In this way, the entire submerged area B is lifted up while sequentially moving the mounting position of the jacks 20 row by row.
また沈下が大きい場合には、沈下域全域にわた
つて一定高さ持ち上げた後、同様にして再度施工
して必要な高さまで持ち上げる。 In addition, if the subsidence is large, the entire subsidence area should be raised to a certain height, and then the construction should be carried out again in the same manner to raise it to the required height.
このようにして沈下域全域を所定の高さまで持
ち上げた後、PC舗装版１と基礎路盤５間にでき
た空間に砂や発砲セメントモルタル等の充填材３
２を前記作業穴３とは別に開口させた注入穴３３
よりホース３４を通して注入し、作業穴３内にジ
ヤツキ装着金具１０、固定金具１１を残した状態
でその作業穴３に施蓋し作業を完了する。なおこ
の施蓋はコンクリートによつて埋め込んでもよ
く、また後日の再修復のために使用できるように
取り外し可能な蓋を使用してもよいものである。 After raising the entire subsidence area to a predetermined height in this way, filler material 3 such as sand or foamed cement mortar is filled into the space created between the PC pavement slab 1 and the foundation roadbed 5.
2 is opened separately from the working hole 3.
The liquid is injected through the hose 34, and the work hole 3 is covered with the jack attachment fitting 10 and fixing metal fitting 11 left in the work hole 3, and the work is completed. This cover may be embedded in concrete, or a removable cover may be used so that it can be used for re-restoration at a later date.
（発明の効果）
上述の如く、本発明のコンクリート舗装版の扛
上方法は、沈下域に数列配置に設置した扛上ジヤ
ツキをそれぞれの扛上量を順次違えて予定の扛上
曲面に合わせて扛上させるものであり、しかもそ
の予定扛上曲面が多段階に分けて設定されている
ため、部分的な扛上を順次移行させるコンクリー
ト舗装版の高さ補修においても、あらかじめ想定
された以上の曲げ力が加わらず、扛上作業が安全
にしかも正確かつ迅速に行われるることとなつた
ものである。(Effects of the Invention) As described above, the method for lifting concrete pavement slabs of the present invention involves using lifting jacks installed in several rows in a subsidence area and adjusting the lifting amount of each jack in order to match the planned lifting surface. Since the planned lifting surface is set in multiple stages, even when repairing the height of a concrete pavement slab in which partial lifting is carried out sequentially, it takes more time than expected. No bending force is applied, and lifting work can be carried out safely, accurately and quickly.
第１図イ〜チは本発明方法の工程の概略を順に
示す断面図、第２図は沈下域に形成する作業穴の
配置を示す平面図、第３図はジヤツキ装着金具及
び固定金具の装着状態を示す縦断面図、第４図は
ジヤツキ装着金具の平面図、第５図は扛上ジヤツ
キ装着状態の縦断面図、第６図は扛上ジヤツキ装
着配置の平面図、第７図は扛上工程を示すグラ
フ、第８図は扛上制御装置を示すブロツクダイア
グラムである。
Ａ……PC舗装版、Ｂ……沈下域、３……作業
穴、５……基礎路盤、６……舗装版下作業空間、
７……反力盤、８……掘削面、１０……ジヤツキ
装着金具、１１……固定金具、１２……円筒部、
１２ａ……環状凹溝、１３……張出部、１３ａ…
…分割片、１４……溶接点、１５……雌ねじ、１
６……ロツクナツト、１７……工具係合穴、１８
……蓋、２０……扛上ジヤツキ、２０1〜２０4…
…ジヤツキ列、２１……ラムチエア、２２……油
圧シリンダ、２３……ラム、２４……エクステン
シヨンロツド、、２５……ナツト旋回工具、２６
……ナツト係合突起、２７……出入ロツド、２８
……扛上量検出センサー、３０……沈下域曲面、
３１ａ〜３１ｃ……扛上予定曲面、３２……充填
材、３３……注入穴、４０……油圧ポンプ、４１
……制御盤、４２……変位計、４３……操作盤、
４４……圧力センサー、４５……荷重計。
Figures 1 to 1 are cross-sectional views sequentially showing the outline of the steps of the method of the present invention, Figure 2 is a plan view showing the arrangement of working holes to be formed in the subsidence area, and Figure 3 is the attachment of the jack mounting bracket and fixing bracket. Fig. 4 is a plan view of the jack mounting bracket, Fig. 5 is a longitudinal sectional view of the lifting jack installed, Fig. 6 is a plan view of the lifting jack mounting arrangement, and Fig. 7 is a plan view of the jack mounting bracket. The graph showing the upper process and FIG. 8 are the block diagrams showing the lifting control device. A... PC pavement version, B... Subsidence area, 3... Working hole, 5... Foundation roadbed, 6... Working space under the pavement version,
7... Reaction plate, 8... Excavation surface, 10... Jacket mounting bracket, 11... Fixing bracket, 12... Cylindrical part,
12a... annular groove, 13... overhang, 13a...
...Divided piece, 14...Welding point, 15...Female thread, 1
6... Lock nut, 17... Tool engagement hole, 18
... Lid, 20 ... Lid, 20 1 to 20 4 ...
... Jacket row, 21 ... Ram chair air, 22 ... Hydraulic cylinder, 23 ... Ram, 24 ... Extension rod, 25 ... Nut turning tool, 26
... Nut engaging protrusion, 27 ... Input/exit rod, 28
...Lifting amount detection sensor, 30...Sinking area curved surface,
31a to 31c... Curved surface to be lifted, 32... Filling material, 33... Injection hole, 40... Hydraulic pump, 41
...Control panel, 42...Displacement meter, 43...Operation panel,
44...Pressure sensor, 45...Load meter.
Claims (1)
状配置に多数の扛上作業穴を該コンクリート舗装
版の表裏に貫通させて開口させ、該扛上作業穴下
の反力盤に扛上ジヤツキを支持させて、前記コン
クリート舗装版を扛上させ、その扛上によつてで
きたコンクリート舗装版下の空間に充填材を充填
する沈下したコンクリート舗装版の扛上方法にお
いて、前記沈下域の前記扛上作業穴に扛上ジヤツ
キを装着し、その扛上ジヤツキ装着域の沈下域曲
面をあらかじめ計測しておき、該沈下域曲面と最
終扛上曲面との間に前記コンクリート舗装版の許
容曲げ量に合せた中間扛上曲面をあらかじめ設定
しておき、各扛上ジヤツキを各中間扛上曲面に対
応する高さに達する毎に停止させ、全扛上ジヤツ
キが所定の中間扛上曲面に達するのを待つて次の
中間扛上曲面、更には最終扛上曲面まで間欠的に
扛上させることを特徴としてなる沈下コンクリー
ト舗装版の扛上方法。1. A large number of lifting holes are opened in a grid pattern throughout the subsidence area of the concrete pavement slab, penetrating the front and back sides of the concrete pavement slab, and lifting jacks are installed in the reaction plate below the lifting holes. In the method for raising a sunken concrete pavement slab, the concrete pavement slab is lifted up by supporting the concrete pavement slab, and the space under the concrete pavement slab created by the lifting is filled with a filler. Attach a lifting jack to the upper working hole, measure the sinking area curved surface of the area where the lifting jack is installed in advance, and set the allowable bending amount of the concrete pavement plate between the settling area curved surface and the final lifting curved surface. The combined intermediate lifting surfaces are set in advance, and each lifting jack is stopped every time it reaches the height corresponding to each intermediate lifting surface, so that all lifting jacks reach the predetermined intermediate lifting surface. A method for lifting a submerged concrete pavement slab, which is characterized in that it is intermittently lifted up to the next intermediate lifting curved surface and further to the final lifting curved surface after waiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15093688A JPH01318606A (en) | 1988-06-18 | 1988-06-18 | Lifting method for settled concrete paving slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15093688A JPH01318606A (en) | 1988-06-18 | 1988-06-18 | Lifting method for settled concrete paving slab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01318606A JPH01318606A (en) | 1989-12-25 |
| JPH0554521B2 true JPH0554521B2 (en) | 1993-08-12 |
Family
ID=15507652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15093688A Granted JPH01318606A (en) | 1988-06-18 | 1988-06-18 | Lifting method for settled concrete paving slab |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01318606A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH086284B2 (en) * | 1993-01-25 | 1996-01-24 | 株式会社ピー・エス | How to repair height of sunken concrete pavement |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290803A (en) * | 1988-05-19 | 1989-11-22 | P S Concrete Co Ltd | Device for lifting up concrete pavement slab |
-
1988
- 1988-06-18 JP JP15093688A patent/JPH01318606A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290803A (en) * | 1988-05-19 | 1989-11-22 | P S Concrete Co Ltd | Device for lifting up concrete pavement slab |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01318606A (en) | 1989-12-25 |
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