JP3792344B2 - Compaction vibrator and compaction method using the same - Google Patents

Compaction vibrator and compaction method using the same Download PDF

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Publication number
JP3792344B2
JP3792344B2 JP11570397A JP11570397A JP3792344B2 JP 3792344 B2 JP3792344 B2 JP 3792344B2 JP 11570397 A JP11570397 A JP 11570397A JP 11570397 A JP11570397 A JP 11570397A JP 3792344 B2 JP3792344 B2 JP 3792344B2
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Prior art keywords
compacting
vibrator
housing
outer shell
casing
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JP11570397A
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JPH10306585A (en
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豊 佐藤
栄一 前橋
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Railway Technical Research Institute
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Railway Technical Research Institute
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Description

【発明の属する技術分野】
本発明はコンクリートまたはモルタルを打設する際に躯体を締固めるための起振機および締固め起振機を用いた締固め方法に関するものである。
【従来の技術】
従来より、コンクリート締固め機は大型で棒状の起振部を有するものが用いられていた。また、コンクリートの締固めはコンクリート締固め機を用いて、打設する躯体中にコンクリート締固め機の起振部を入れて締固めを行っていた。
しかし、従来のコンクリート締固め機では、棒状の起振部の長さにも限度があり、締固めできる範囲が限られるというような欠点があった。また、従来のコンクリート締固め方法では、深い基礎の打設やトンネルの覆工コンクリートの打設の際には、締固めのできない箇所が生じるというような欠点があった。
【発明が解決しようとする課題】
従来のコンクリート締固め機では、締固めできる範囲が限られるという問題点があった。また、従来のコンクリート締固め方法では、深い基礎の打設やトンネルの覆工コンクリートの打設などの際には、締固めのできない箇所が生じるという問題点があった。本発明は前記のような問題点を解決するためになされたもので、従来のコンクリート締固め機では、棒状の起振部が届かない箇所でも締固めできる締固め起振機、および、深い基礎の打設やトンネルの覆工コンクリートの打設の際に生じる締固めのできない箇所でも締固めできる締固め起振機を用いた締固め方法を提供する。
【課題を解決するための手段】
本発明の請求項1における締固め起振機は、硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有していて表面に突出物を設けた外殻で覆われ、その外殻の中に動力源とその動力源に接続された起振機構とが内蔵され、躯体中で振動することによりその躯体を締固めるとともに、その躯体中に配置する鉄筋またはその躯体を打設する際に用いる型枠の内側に、その締固め起振機を固定する治具を設けたことを特徴とする。
本発明の請求項における締固め起振機を用いた締固め方法は、コンクリートまたはモルタルを打設する躯体中に、表面に突出物を設けた外殻で覆われて動力源と起振機構とを内蔵してその躯体中で振動することにより、その躯体を締固める締固め起振機を入れて、
その締固め起振機をあらかじめ設定した時間だけ振動させることによりその躯体を締固めて、その躯体を締固めた後にその締固め起振機を存置させたままその躯体を硬化させることを特徴とする。
本発明の請求項1における締固め起振機によれば、外殻が硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有しているので、硬化後の躯体中に存置させたままでも外殻が押し潰されることがなく、硬化後の躯体と一体化して強度が得られる。また、外殻の表面に突出物を設けることにより、躯体中の広い範囲を締固めることができる。さらに本発明の請求項における締固め起振機によれば、躯体中に配置する鉄筋または躯体を打設する際に用いる型枠の内側に締固め起振機を固定できるので、躯体の任意の位置に締固め起振機を配置して躯体全体をまんべんなく締固めることができる。本発明の請求項における締固め起振機を用いた締固め方法によれば、躯体中に締固め起振機を入れて躯体を締固めて、締固め起振機を存置させたままその躯体を硬化させるので、従来のコンクリート締固め方法では締固めのできなかった深い基礎やトンネル覆工コンクリートなどの箇所でも締固めできる。
【発明の実施の形態】
本発明の請求項1における締固め起振機の実施形態について、図1を用いて説明する。本発明の請求項1における締固め起振機1は、硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有していて表面に突出物5を設けた外殻2で覆われ、その外殻2の中に動力源3とその動力源3に接続された起振機構4とが内蔵され、躯体中で振動することによりその躯体7(図3参照)を締固める。
外殻2は球型または卵型をしていて、中心をとおり円となる断面で2つに分割できるような形状になっている。外殻2の中には動力源3と起振機構4とを内蔵するためのスペースを設けてある。外殻2の材質が硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有するためには、金属製の材料や合成樹脂製の材料などを用いる。外殻2の表面に設ける突出物5はコンクリートまたはモルタルとの付着力を増すための凹凸だけでなく、振動を広範囲に伝達するための棒状の突起や翼状の突起などを設ける。動力源3としてはモーターやゼンマイやゴムを用いる。モーターを動力源3とする場合にはモーターと電池とスイッチとを接続して、スイッチを「ON」にすることにより振動を開始させる。ゼンマイやゴムを動力源3とする場合には緩み止めを設けて、中心をとおり円となる断面で2つに分割した外殻2をおのおの逆方向にねじることによりゼンマイやゴムが巻けるようにして、ストッパーを解除することにより振動を開始させる。起振機構4としてはおもりやカムやクランクなどを組み合わせた機構とする。振動を起こす仕組みは次のようなことが考えられる。
(1)動力源3の回転軸に回転軸の中心から偏心させて支持したおもりを取り付けて、このおもりを回転させることによって振動を起こす。
(2)動力源3の回転軸に柔支持したおもりを取り付けて、回転半径内の支障する位置におもりが衝突する障害物を設けるか回転半径の中心をずらして外殻2の内壁におもりを衝突させるかして、このおもりを回転させることによって振動を起こす。
(3)動力源3の回転軸にカムを取り付けてカムを介しておもりを振動させるかクランクを取り付けてクランクを介しておもりを振動させるかして、このカムまたはクランクを回転させることによって振動を起こす。
(4)外殻2が伸縮運動して振動を起こす仕組みについて図4R>4を用いて説明する。中心をとおり円となる断面で2つに分割できるような形状になっている外殻2の一部をはめ合うようにして、一方の外殻2に取り付けられた動力源3の回転軸にカム10やクランク11を介して他方の外殻2と連結して、このカム10またはクランク11を回転させることによってはめ合う箇所で伸縮運動をすることによって振動を起こす。締固め起振機1の比重は打設するコンクリートまたはモルタルと同程度にして、締固め起振機1が躯体中で浮いたり沈んだりしないようにする。
さらに本発明の請求項における締固め起振機の実施形態について、図2を用いて説明する。本発明の請求項における締固め起振機1は、躯体中に配置する鉄筋8またはその躯体7(図3参照)を打設する際に用いる型枠9(図3参照)の内側にその締固め起振機1を固定する治具6を設ける。
躯体中に配置する鉄筋8または躯体7(図3R>3参照)を打設する際に用いる型枠9(図3参照)の内側に締固め起振機1を固定する治具6はベルトを介して鉄筋8に固定するものであったり、棒の先に型枠9(図3R>3参照)に接着する面を有するものであったりする。いずれも、締固め起振機1の振動の障害にならないようになっている。
本発明の請求項における締固め起振機を用いた締固め方法の実施形態について、図3を用いて説明する。本発明の請求項における締固め起振機1を用いた締固め方法は、コンクリートまたはモルタルを打設する躯体中に、表面に突出物5を設けた外殻2(図1参照)で覆われて動力源3(図1参照)と起振機構4(図1R>1参照)とを内蔵してその躯体中で振動することにより、その躯体7を締固める締固め起振機1を入れて、その締固め起振機1をあらかじめ設定した時間だけ振動させることによりその躯体7を締固めて、その躯体7を締固めた後にその締固め起振機1を存置させたままその躯体7を硬化させる。
本発明の締固め起振機1を用いた締固め方法は、コンクリートまたはモルタルを打設する躯体中に、表面に突出物5を設けた外殻2(図1参照)で覆われて動力源3(図1参照)と起振機構4(図1参照)とを内蔵して躯体中で振動することにより、躯体7を締固める締固め起振機1を投入して、あらかじめ設定した時間だけ振動させることにより躯体7を締固めて、躯体7を締固めた後に締固め起振機1を存置させたまま躯体7を硬化させる。また、鉄筋8または型枠9に固定する治具6を設けた締固め起振機1を鉄筋8または型枠9に固定して振動させたままコンクリートまたはモルタルを打設して、あらかじめ設定した時間だけ振動させることにより躯体7を締固めて、躯体7を締固めた後に締固め起振機1を存置させたまま躯体7を硬化させる。
【発明の効果】
本発明の締固め起振機によれば、外殻が硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有しているので、硬化後の躯体中に存置させたままでも外殻が押し潰されることがなく、硬化後の躯体と一体化して強度が得られる。また、外殻の表面に突出物を設けることにより、躯体中の広い範囲を締固めることができる。また、躯体を締固めた後に締固め起振機を存置させたまま躯体を硬化させるので、従来のコンクリート締固め機では棒状の起振部が届かない箇所も締固めできる。さらに、躯体中に配置する鉄筋または躯体を打設する際に用いる型枠の内側に締固め起振機を固定できるので、躯体の任意の位置に締固め起振機を配置して躯体全体をまんべんなく締固めることができる。本発明の締固め起振機を用いた締固め方法によれば、躯体中に締固め起振機を入れたまま躯体を硬化させるので、従来のコンクリート締固め方法では締固めのできなかった深い基礎やトンネルの覆工コンクリートなどの箇所でも締固めできる。
【図面の簡単な説明】
【図1】本発明の請求項1における締固め起振機の実施形態を示した構成図である。
【図2】本発明の請求項における締固め起振機の実施形態を示した構成図である。
【図3】本発明の請求項における締固め起振機を用いた締固め方法の実施形態を示したもので、(a)は締固め起振機を躯体中に投入した場合の説明図であり、(b)は締固め起振機を鉄筋や型枠に固定した場合の説明図である。
【図4】本発明の締固め起振機の起振機構の一例を示したもので、(a)はカムを用いた場合の説明図であり、(b)はクランクを用いた場合の説明図である。
【符号の説明】
1 締固め起振機
2 外殻
3 動力源
4 起振機構
5 突出物
6 治具
7 躯体
8 鉄筋
9 型枠
10 カム
11 クランク
BACKGROUND OF THE INVENTION
The present invention relates to an exciter for compacting a casing when placing concrete or mortar and a compacting method using the compacting exciter.
[Prior art]
Conventionally, a concrete compacting machine has been used which has a large bar-like vibration generating portion. In addition, the concrete compaction is performed by using a concrete compaction machine and placing the vibration portion of the concrete compaction machine in the casing to be placed.
However, the conventional concrete compactor has a limitation in that the length of the rod-like vibration generating portion is limited, and the range in which compaction can be performed is limited. In addition, the conventional concrete compaction method has a drawback that a portion that cannot be compacted is generated when a deep foundation is cast or a tunnel lining concrete is cast.
[Problems to be solved by the invention]
The conventional concrete compacting machine has a problem in that the range that can be compacted is limited. Further, the conventional concrete compaction method has a problem that a portion that cannot be compacted is generated when a deep foundation is cast or a tunnel lining concrete is cast. The present invention has been made to solve the above-described problems, and in a conventional concrete compactor, a compactor and a deep foundation capable of compacting even in a place where a bar-like vibrator does not reach. A compacting method using a compacting vibration exciter that can compact even a portion that cannot be compacted that occurs when casting concrete or tunnel lining concrete is provided.
[Means for Solving the Problems]
The compacting vibrator according to claim 1 of the present invention is covered with an outer shell having a strength equal to or higher than that of hardened concrete or mortar or equal to or higher than that of aggregate and provided with protrusions on the surface. , the power source into the outer shell and the connected excitation mechanism on the power source is incorporated, together with the compacting the precursor by vibration in building frame, the reinforcement or a precursor placed in the skeleton The present invention is characterized in that a jig for fixing the compacting vibration exciter is provided inside the mold used for placing.
According to the second aspect of the present invention, there is provided a compacting method using a compacting vibration exciter, wherein a power source and a vibration generating mechanism are covered with an outer shell provided with protrusions on the surface of a concrete or mortar housing. And put in a compacting vibration exciter to compact the housing,
It is characterized in that the compacting vibrator is vibrated for a preset time to compact the casing, and after the casing is compacted, the casing is cured with the compacting vibrator remaining in place. To do.
According to the compacting vibrator of claim 1 of the present invention, the outer shell has a strength equal to or greater than that of the concrete or mortar after curing or equal to or greater than that of the aggregate. The outer shell is not crushed even if left in place, and it is integrated with the cured casing to obtain strength. Moreover, the wide range in a housing can be compacted by providing a protrusion on the surface of the outer shell. Furthermore , according to the compacting vibrator of claim 1 of the present invention, the compacting vibrator can be fixed to the inside of the mold used for placing a reinforcing bar or a housing to be placed in the housing. A compacting exciter can be placed at the position of, so that the entire housing can be compacted evenly. According to the compacting method using the compacting vibrator in claim 2 of the present invention, the compacting vibrator is placed in the housing, the housing is compacted, and the compacting vibrator is left in place. Since the frame is hardened, it can be compacted even in places such as deep foundations and tunnel lining concrete that could not be compacted by the conventional concrete compaction method.
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a compacting vibrator according to claim 1 of the present invention will be described with reference to FIG. The compacting vibrator 1 according to claim 1 of the present invention has an outer shell 2 that has a strength equal to or greater than that of hardened concrete or mortar or equal to or greater than that of an aggregate and is provided with a protrusion 5 on the surface. A power source 3 and a vibration generating mechanism 4 connected to the power source 3 are built in the outer shell 2, and the housing 7 (see FIG. 3) is compacted by vibrating in the housing. .
The outer shell 2 has a spherical shape or an egg shape, and has a shape that can be divided into two parts in a circular cross section passing through the center. In the outer shell 2, a space for incorporating the power source 3 and the vibration generating mechanism 4 is provided. In order for the material of the outer shell 2 to have a strength equal to or greater than that of the concrete or mortar after curing, or a strength equal to or greater than that of the aggregate, a metal material or a synthetic resin material is used. The protrusion 5 provided on the surface of the outer shell 2 is provided with not only irregularities for increasing adhesion to concrete or mortar but also rod-like protrusions and wing-like protrusions for transmitting vibrations over a wide range. As the power source 3, a motor, a spring, or rubber is used. When the motor is used as the power source 3, the motor, the battery, and the switch are connected, and the vibration is started by turning on the switch. When using a spring or rubber as the power source 3, provide a locking stopper and twist the outer shell 2 divided into two sections with a circle passing through the center so that the spring or rubber can be wound in the opposite direction. , Start the vibration by releasing the stopper. The vibration generating mechanism 4 is a mechanism combining a weight, a cam, a crank, and the like. The mechanism that causes vibration is as follows.
(1) A weight supported eccentrically from the center of the rotating shaft is attached to the rotating shaft of the power source 3, and vibration is caused by rotating the weight.
(2) A weight that is softly supported is attached to the rotating shaft of the power source 3, and an obstacle with which the weight collides is provided at an obstructing position within the rotating radius, or the center of the rotating radius is shifted to place the weight on the inner wall of the outer shell 2. It is caused to vibrate by rotating this weight in the collision.
(3) A cam is attached to the rotating shaft of the power source 3 and the weight is vibrated through the cam, or the crank is attached and the weight is vibrated through the crank, and the cam or the crank is rotated to generate vibration. Wake up.
(4) The mechanism of the outer shell 2 expanding and contracting to cause vibration will be described with reference to FIG. A cam is attached to the rotating shaft of the power source 3 attached to one outer shell 2 so that a part of the outer shell 2 shaped so as to be divided into two in a circular section passing through the center is fitted. 10 and a crank 11 are connected to the other outer shell 2, and the cam 10 or the crank 11 is rotated to cause expansion and contraction at a fitting position, thereby causing vibration. The specific gravity of the compacting vibrator 1 is set to the same level as the concrete or mortar to be placed so that the compacting vibrator 1 does not float or sink in the housing.
Further, an embodiment of a compacting vibrator according to claim 1 of the present invention will be described with reference to FIG. The compacting vibration exciter 1 according to the first aspect of the present invention includes a rebar 8 disposed in a casing or a casing 9 (see FIG. 3) used for placing a reinforcing bar 8 (see FIG. 3). A jig 6 for fixing the compacting vibrator 1 is provided.
The jig 6 for fixing the compacting exciter 1 to the inside of the mold 9 (see FIG. 3) used when placing the reinforcing bar 8 or the housing 7 (see FIG. 3R> 3) placed in the housing is a belt. It may be fixed to the reinforcing bar 8 via, or may have a surface bonded to the mold 9 (see FIG. 3R> 3) at the end of the bar. In either case, the vibration of the compacting vibrator 1 is not obstructed.
An embodiment of a compacting method using a compacting vibrator in claim 2 of the present invention will be described with reference to FIG. According to the second aspect of the present invention, the compacting method using the compacting vibrator 1 is covered with an outer shell 2 (see FIG. 1) having protrusions 5 on the surface in a concrete or mortar housing. The power source 3 (see FIG. 1) and the vibration generating mechanism 4 (see FIG. 1R> 1) are built in and the vibration generator 1 vibrates to insert the compacting vibrator 1 for compacting the housing 7. Then, the compacting vibrator 1 is vibrated for a preset time so that the casing 7 is compacted. After the casing 7 is compacted, the compacting vibrator 1 is left in place. Is cured.
In the compacting method using the compacting vibrator 1 of the present invention, a concrete or mortar casing is covered with an outer shell 2 (see FIG. 1) provided with protrusions 5 on the surface thereof. 3 (refer to FIG. 1) and the vibration generating mechanism 4 (refer to FIG. 1) are incorporated, and the compacting vibrator 1 for compacting the casing 7 is inserted by vibrating in the casing. By vibrating, the housing 7 is compacted. After the housing 7 is compacted, the housing 7 is cured while the compacting vibrator 1 is left. Further, the compacting vibrator 1 provided with the jig 6 for fixing to the reinforcing bar 8 or the formwork 9 is fixed to the reinforcing bar 8 or the formwork 9 and is put in a concrete or mortar while being vibrated and set in advance. The casing 7 is compacted by vibrating for the time, and after the casing 7 is compacted, the casing 7 is cured while the compacting vibrator 1 is left.
【The invention's effect】
According to the compacting vibrator of the present invention, the outer shell has a strength equal to or greater than that of the concrete or mortar after curing or equal to or greater than that of the aggregate. As it is, the outer shell is not crushed, and the strength is obtained by integrating with the cured casing. Moreover, the wide range in a housing can be compacted by providing a protrusion on the surface of the outer shell. In addition, since the casing is hardened with the compacting vibrator remaining in place after the compacting of the casing, it is possible to compact a portion where the rod-like vibrator does not reach with the conventional concrete compactor. Furthermore, since the compacting exciter can be fixed inside the formwork used when placing the reinforcing bar or the structural member to be placed in the casing, the compacting exciter can be arranged at any position of the casing to Can be compacted evenly. According to the compacting method using the compacting vibrator of the present invention, the housing is cured with the compacting vibrator placed in the housing, so that the conventional concrete compacting method cannot be compacted deeply. It can also be compacted in places such as foundation and tunnel lining concrete.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an embodiment of a compacting vibrator according to claim 1 of the present invention.
FIG. 2 is a configuration diagram showing an embodiment of a compacting vibrator according to claim 1 of the present invention.
FIG. 3 shows an embodiment of a compacting method using a compacting vibrator according to claim 2 of the present invention, and FIG. 3 (a) is an explanatory diagram when the compacting vibrator is put into a housing. (B) is explanatory drawing at the time of fixing a compacting vibrator to a reinforcing bar or a formwork.
4A and 4B show an example of a vibration generating mechanism of a compacting vibration exciter according to the present invention, where FIG. 4A is an explanatory view when a cam is used, and FIG. 4B is an explanatory view when a crank is used. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compaction vibrator 2 Outer shell 3 Power source 4 Excitation mechanism 5 Protruding object 6 Jig 7 Housing 8 Reinforcing bar 9 Formwork 10 Cam 11 Crank

Claims (2)

コンクリートまたはモルタルを打設する際に躯体を締固めるための起振機であって、硬化後のコンクリートまたはモルタルと同等以上の強度あるいは骨材と同等以上の強度を有していて表面に突出物を設けた外殻で覆われ、該外殻の中に動力源と該動力源に接続された起振機構とが内蔵され、躯体中で振動することにより該躯体を締固めるとともに、前記躯体中に配置する鉄筋または前記躯体を打設する際に用いる型枠の内側に、前記締固め起振機を固定する治具を設けたことを特徴とする締固め起振機。 A vibrator for compacting the frame when placing concrete or mortar, which has a strength equal to or higher than that of hardened concrete or mortar or a strength equal to or greater than that of aggregates, and projects on the surface covered with an outer shell provided with, and a connected excitation mechanism to a power source and animal power source is incorporated in the outer shell, with compacting the該躯body by vibrating in building frame, the building frame in A compacting vibration exciter, wherein a jig for fixing the compacting vibration exciter is provided inside a formwork used when placing a reinforcing bar to be placed on the casing or the frame. コンクリートまたはモルタルを打設する際に躯体を締固めるための方法であって、コンクリートまたはモルタルを打設する躯体中に、表面に突出物を設けた外殻で覆われて動力源と起振機構とを内蔵して該躯体中で振動することにより、該躯体を締固める締固め起振機を入れて、該締固め起振機をあらかじめ設定した時間だけ振動させることにより該躯体を締固めて、該躯体を締固めた後に該締固め起振機を存置させたまま該躯体を硬化させることを特徴とする締固め起振機を用いた締固め方法。 A method for compacting a casing when placing concrete or mortar, wherein the casing for placing concrete or mortar is covered with an outer shell provided with protrusions on the surface, and a power source and an oscillation mechanism Is contained in the housing, and a compacting vibrator for compacting the housing is put in, and the compacting vibrator is vibrated for a preset time to compact the housing. A compacting method using a compacting vibrator, wherein after the compacted body, the housing is cured while the compacting vibrator is left in place.
JP11570397A 1997-05-06 1997-05-06 Compaction vibrator and compaction method using the same Expired - Fee Related JP3792344B2 (en)

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