JP5057310B2 - Manhole cover height adjustment method - Google Patents
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- JP5057310B2 JP5057310B2 JP2009095283A JP2009095283A JP5057310B2 JP 5057310 B2 JP5057310 B2 JP 5057310B2 JP 2009095283 A JP2009095283 A JP 2009095283A JP 2009095283 A JP2009095283 A JP 2009095283A JP 5057310 B2 JP5057310 B2 JP 5057310B2
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Description
本発明は、マンホール蓋の高さと傾斜を調整することに関する。 The present invention relates to adjusting the height and inclination of a manhole cover.
従来、マンホール蓋の高さ調整作業において設置する高さと傾斜の決定は、いろいろな高さと傾斜の調整リングを組み合わせて高さと傾斜を調整するか(特許文献1)、スプリングのような調整部材を蓋の下に蓋を固定するボルトを介して設置し、蓋の高さをナットの締め付けで決定し、蓋と人孔の間にモルタル等を充填し、その充填物が十分硬化させる方法(特許文献2)、筒状の原リングを3ヵ所のボルトの位置にそれぞれの高さ調整高を下がりとして位置を決め、その3点を通る面で切断して調整材とする方法(特許文献3)等が提案されていた。 Conventionally, the determination of the height and inclination to be installed in the manhole cover height adjustment operation is performed by adjusting the height and inclination by combining various height and inclination adjustment rings (Patent Document 1), or by using an adjustment member such as a spring. It is installed under the lid through a bolt that fixes the lid, the height of the lid is determined by tightening the nut, and mortar is filled between the lid and the human hole, and the filling is fully cured (patent Document 2), a method of determining the position of the cylindrical original ring at three bolt positions by lowering the height adjustment height and cutting the surface through the three points to make an adjustment material (Patent Document 3) Etc. were proposed.
しかし、調整リングを組み合わせて高さと傾斜を調整する方法では調整リングの最小厚が0.5cm以上で、最大、調整リングの最小厚の1/2までしか調整ができないため調整誤差が大きく、舗装後、周辺舗装に合わせてマンホール蓋を設置する後付け工法には調整精度が不十分であった。また、厚さの異なる調整リングの組み合わせの選定や在庫管理も煩雑であった。 However, in the method of adjusting the height and inclination by combining the adjustment ring, the minimum thickness of the adjustment ring is 0.5 cm or more, and adjustment is possible only up to the maximum and half of the minimum thickness of the adjustment ring. Later, adjustment accuracy was insufficient for the retrofitting method of installing a manhole cover according to the surrounding pavement. In addition, selection of a combination of adjustment rings having different thicknesses and inventory management are complicated.
さらに、ワッシャーやスプリングのような調整部材を蓋の下に蓋を固定するボルトを介して設置し、蓋の高さをナットの締め付けで決定し、蓋と人孔の間にモルタル等を充填し、その充填物を十分硬化させる方法(特許文献2)では、モルタル等の硬化時間が長いため長い養生時間が必要となり、設置経費や交通規制時間等周辺への影響も増大していた。 In addition, adjusting members such as washers and springs are installed under the lid via bolts that fix the lid, the height of the lid is determined by tightening the nut, and mortar is filled between the lid and the human hole. In the method of sufficiently curing the filler (Patent Document 2), the curing time for mortar and the like is long, so that a long curing time is required, and the influence on the surroundings such as the installation cost and traffic regulation time has increased.
また、筒状の原リングを3ヵ所のボルトの位置にそれぞれの高さ調整高を下がりとして位置を決め、その3点を通る面で切断して調整材とする方法(特許文献3)では、切断する装置が必要で、その動力源や作業スペースを確保しなければならず、これらの設備費が必要であった。 Moreover, in the method (Patent Document 3) where the cylindrical original ring is positioned at three bolt positions by lowering the respective height adjustment heights, and the adjustment material is cut by a plane passing through the three points (Patent Document 3). An apparatus for cutting was necessary, and the power source and work space had to be secured, and these equipment costs were necessary.
本発明は、上記の問題を解決するためのものである。 The present invention is to solve the above problems.
地下構造物のマンホール蓋を舗装後、周辺舗装に合わせて設置する、いわゆる後付け工法によるマンホール蓋の設置において、高さは厚さが一定の水平リング、傾斜は同じ形状の傾斜調整リング2枚の組み合わせで調整するとき、調整すべき厚さの平均をH1、傾斜調整リングの平均厚をH2とし、高さ調整に必要な水平リングの厚さをh4としたとき、h4=H1−(H2×2)となり、薄いシート状の水平リングを剥離可能な状態で筒状に重ねて1個の製品とし、必要な厚さh4となるように分離して高さ調整用水平リングとし、傾斜は調整すべき厚さの最大値をh1、上部傾斜調整リングの最大厚となる位置13、(h1−h4)÷2の厚さとなる位置を14、15、ここの厚さをh7とし、傾斜調整リングの外周円の中心を12としたとき、12と13を結ぶ線と13から右円周方向の14と12を結ぶ線の侠角をθとし、下部傾斜調整リングはその中心12と下部傾斜調整リングの最大厚となる位置18を結ぶ線から左円周方向に角θ移動させた点を19とし、ここの厚さはh7で、14のh7と19のh7を重ね合わせて上記の上下傾斜調整リングを合成すると、その最大調整厚の位置は14+19の位置で、高さはh7×2=h3となり、その合成された傾斜調整リングの傾斜が調整すべき傾斜となり、前記水平リングと組み合わせてマンホール蓋の高さと傾斜を調整することにより解決した。 After paving the manhole cover of the underground structure, it is installed according to the surrounding pavement. When installing the manhole cover by the so-called retrofitting method, the height is a horizontal ring with a constant thickness, and the inclination is two tilt adjustment rings of the same shape. When adjusting in combination, if the average thickness to be adjusted is H1, the average thickness of the tilt adjustment ring is H2, and the thickness of the horizontal ring necessary for height adjustment is h4, then h4 = H1- (H2 × 2), a thin sheet-like horizontal ring is peeled and stacked in a cylindrical shape to form a single product, separated into a required thickness h4 to obtain a horizontal ring for height adjustment, and the inclination is adjusted. The maximum thickness value to be set is h1, the
高さ調整が正確で容易である。
高さ調整作業を作業時間短縮できるので交通規制時間や設置コストの削減ができる。
調整リングの種類を集約して製造や資材管理のコスト削減ができる。
調整リングの切断等の装置が不要で設備費の削減ができる。Height adjustment is accurate and easy.
Since the height adjustment work can be shortened, traffic regulation time and installation cost can be reduced.
The cost of manufacturing and material management can be reduced by integrating the types of adjustment rings.
Equipment such as cutting of the adjustment ring is not required and the equipment cost can be reduced.
いわゆる後付け工法(特許文献4)による下水道のマンホール蓋設置を例に実施例を説明する。 The embodiment will be described by taking the manhole cover installation of the sewer by the so-called retrofitting method (Patent Document 4) as an example.
特許文献4 特開平11−229415号 Patent Document 4 JP-A-11-229415
仮設蓋を舗装する前の路面と同じ高さに、復元可能なクッション材を介在させ、転圧荷重で沈下し、その荷重が開放されると復元するような不安定な状態で設置し、舗装後、仮設蓋の上部に発生した舗装切断線で囲まれた舗装版を撤去、続いて仮設蓋、仮設調整リングを除去し、本設蓋を周辺舗装面と同じ高さに設置固定する。 Install a cushioning material that can be restored at the same height as the road surface before paving the temporary lid, settling in an unstable condition that sinks with a rolling load, and restores when the load is released. Then, the pavement plate surrounded by the pavement cutting line generated on the upper part of the temporary cover is removed, and then the temporary cover and the temporary adjustment ring are removed, and the permanent cover is installed and fixed at the same height as the surrounding pavement surface.
このとき、本設蓋の受け枠の下にボルトを介して、本設蓋の高さと傾斜を調整する調整リングは、高さを調整は厚さが一定の薄いシート状の水平リングを剥離可能な状態で筒状に重ねた水平リングの上に傾斜を調整する同じ形状の傾斜調整リング2枚を組み合わせて挿入し調整する。 At this time, the adjustment ring that adjusts the height and inclination of the permanent lid through bolts under the receiving frame of the permanent lid can adjust the height, and can peel off a thin sheet-like horizontal ring with a constant thickness In such a state, two tilt adjustment rings having the same shape for adjusting the tilt are inserted and adjusted on a horizontal ring stacked in a cylindrical shape.
よって、路面の傾斜は傾斜調整リングの傾斜×2以下の平面で、調整代は傾斜調整リングの平均厚×2以上が必要であり、この条件を満たすように仮設調整リングの厚さ、傾斜調整リングの傾斜を調製する。 Therefore, the slope of the road surface is a plane of inclination adjustment ring inclination x 2 or less, and the adjustment allowance is required to be an average thickness of inclination adjustment ring x 2 or more, and the thickness of the temporary adjustment ring and inclination adjustment to satisfy this condition Adjust the slope of the ring.
水平リングは薄いシート状の水平リングを剥離可能な状態で筒状に積み上げ、1個の部材となるので薄いシート状の水平リングでも資材の管理は非常に容易である。また、その薄いシート状の水平リングの厚さは求められる精度により自由に設定できるがマンホールの高さ調整では1mm程度でよい。この薄いシート状の水平リングを筒状に積み重ねたリングから必要な厚さh4となる所定の位置10で剥離させ、分離して高さ調整の水平リングとする。このため、ほぼ連続的な高さ調整が非常に容易にできる。さらに、薄いシート状の水平リングを筒状に積み重ねたリングの厚さh8は1日当たりの処理可能基数をまかなえる程度でよい。たとえば、1日当たり処理基数10基、1基当たりの平均使用厚さ5cmとすれば10×5=50cmとなる。 Since the horizontal ring is stacked in a cylindrical shape in a state where the thin sheet-like horizontal ring can be peeled off, it becomes a single member, so management of materials is very easy even with a thin sheet-like horizontal ring. Further, the thickness of the thin sheet-like horizontal ring can be freely set according to the required accuracy, but it may be about 1 mm for manhole height adjustment. The thin sheet-like horizontal ring is peeled from the ring stacked in a cylindrical shape at a
傾斜調整リングの組み合わせ方は2個の同一形状の傾斜リングをそれぞれの傾斜面で合わせ、片方の傾斜調整リングを0度から180度まで回転させれば0%からその傾斜調整リングの傾斜角の2倍まで任意の傾斜に調整できる。
傾斜調整リングの傾斜面の組み合わせ方は、図4で示すように上部傾斜リングの最大厚となる位置13から右回転方向に、傾斜調整リングの厚さ(h1−h4)÷2=h7となる位置14と15、リングの円の中心を12としたとき、12と13を結ぶ線と13から右水平回転方向の14と12を結ぶ線の侠角の角度をθとし、図5の下部傾斜リングの中心12と下部傾斜リングの最大厚となる位置17を結ぶ線から左水平方向に角度θ移動させた点を19、この厚さはh7となり、14のh7と19のh7合わせて上下傾斜調整リングを合成すると、最大調整厚の位置は14+19の位置で、高さはh7×2=h3となり、その合成された傾斜調整リングの傾斜が調整すべき傾斜となる。
これは、基準点からの回転方向を逆にしても同様である。
また、調整作業をより簡便にするため、あらかじめ傾斜調整リングの外周上に適当な間隔でその点の厚さを明示しておくこともできる。To adjust the tilt adjustment ring, two tilt rings of the same shape are aligned with each other, and if one of the tilt adjustment rings is rotated from 0 to 180 degrees, the tilt angle of the tilt adjustment ring is changed from 0%. It can be adjusted to any inclination up to 2 times.
As shown in FIG. 4, the inclination adjustment ring has a slope (thickness h1−h4) ÷ 2 = h7 in the clockwise direction from the
This is the same even if the direction of rotation from the reference point is reversed.
In addition, in order to make the adjustment work easier, the thickness of the point can be clearly specified at an appropriate interval on the outer periphery of the tilt adjustment ring.
調整厚等を決定するための測定は仮設蓋、仮設調整リング等の仮設物を除去後、道路の傾斜方向と並行で、調整ブロックの外周円の中心線を通る位置で舗装の上に定規を置き、調整ブロック上部までの下がりを測定し、その値から蓋の厚さを控除したのがh1、h2(h1≧h2)となる。 In order to determine the adjustment thickness, etc., after removing temporary objects such as temporary lids and temporary adjustment rings, a ruler is placed on the pavement at the position passing through the center line of the outer circumference of the adjustment block in parallel with the road inclination direction. Then, the lowering to the upper part of the adjustment block is measured, and h1 and h2 (h1 ≧ h2) are obtained by subtracting the thickness of the lid from the value.
以上のとおり、本発明は水平リングを薄いシート状の集合体とし、そこから必要な厚さとなる位置で剥離させ、分離して所定の水平リングとするもので、1個の集合体の水平リングで任意の高さの調整がすばやく正確に行えるものである。さらに、傾斜調整リングの組み合わせ方を明示した事により、傾斜調整リングが高さ調整に寄与する量を算出し、水平リングの必要厚を正確かつ容易に決定できるようにしたものである。
よって、従来のように、多種の調整リングをそろえて試行錯誤法的手法で調整するものとはまったく異なるものである。As described above, according to the present invention, the horizontal ring is formed into a thin sheet-like assembly, and is peeled off at a position where it has a required thickness and separated into a predetermined horizontal ring. With this, any height can be adjusted quickly and accurately. Furthermore, by clearly indicating how the tilt adjustment rings are combined, the amount that the tilt adjustment ring contributes to height adjustment is calculated so that the required thickness of the horizontal ring can be determined accurately and easily.
Therefore, it is completely different from the conventional method in which various adjustment rings are prepared and adjusted by a trial and error method.
本発明によればマンホール蓋の高さ調整が短時間で正確に行えるため設置経費の削減と工事に伴う通行規制や車両通行に伴う騒音振動等周辺の環境負荷を軽減できる。 According to the present invention, since the height of the manhole cover can be accurately adjusted in a short time, the installation cost can be reduced, and environmental loads such as noise regulation and vibration caused by vehicle traffic can be reduced.
1はマンホール蓋、2は上部傾斜調整リング、3は下部傾斜調整リング、4は水平リング、5はマンホールの調整ブロック、6はマンホールの斜壁、7は蓋の受け枠を固定するナット、8は蓋の受け枠を固定するボルト、9は蓋の受け枠を固定するボルトを通す穴、10は積み重ねた水平リングの剥離する位置、11,17は傾斜調整リングの最小厚部、12は傾斜調整リングの外周円の中心、13,18は傾斜調整リングの最大厚部、14,15,19,20は(h1−h4)/2の厚さとなる位置、16は傾斜調整リングが傾斜に合わせて回転可能にするための円周方向に細長いボルトを通す穴。 1 is a manhole cover, 2 is an upper tilt adjustment ring, 3 is a lower tilt adjustment ring, 4 is a horizontal ring, 5 is a manhole adjustment block, 6 is an inclined wall of the manhole, 7 is a nut for fixing the receiving frame of the lid, 8 Is a bolt for fixing the receiving frame of the lid, 9 is a hole through which the bolt for fixing the receiving frame of the lid is passed, 10 is a position where the stacked horizontal rings are peeled off, 11 and 17 are minimum thickness portions of the inclination adjusting ring, and 12 is inclined The center of the outer circumference of the adjustment ring, 13, 18 are the maximum thickness of the inclination adjustment ring, 14, 15, 19, 20 are positions where the thickness is (h1-h4) / 2, and 16 is the inclination adjustment ring in accordance with the inclination. A hole through which a long and narrow bolt passes in the circumferential direction to make it rotatable.
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JPH0953245A (en) * | 1995-08-10 | 1997-02-25 | Haneda Fume Can Kk | Height adjusting method of manhole |
JPH09250227A (en) * | 1996-03-15 | 1997-09-22 | Nippon Steel Chem Co Ltd | Floor joist with cushioning material and execution method for floor joist built up floor using the floor joist |
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