JP2655762B2 - How to install concrete blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[Object of the invention]

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a concrete block such as a box culvert for forming a culvert, a common ditch, an underpass, and the like.

[0003]

2. Description of the Related Art Conventionally, for the construction of culverts, common ditches, underpasses, etc., there is a method of continuously installing a plurality of preformed concrete culverts.

In this method, generally, the culvert body is directly installed at a predetermined position by a vehicle-mounted crane or the like.
If there is no space to move the crane truck etc. at the site due to traffic conditions or various conditions such as the surrounding terrain, lower the culvert at a position where the crane truck etc. can move, and move this culvert on the installation surface Then, it is installed at a predetermined position, and a retracting method is adopted in which the later culvert body is sequentially connected to the earlier culvert body.

In the retracting method, conventionally, an L-shaped steel material is installed on both sides of the installation surface of the culvert body, the culvert body is mounted on the steel material, and the culvert body is mounted on the steel material. It has been slid and moved to a predetermined position. However, if the weight of the culvert body is heavy or the moving distance is long, it is difficult to move the culvert body, and it is difficult to secure work safety.

[0006]

As described above, when constructing a block made of concrete such as a box culvert, it is not easy to move the block by the conventional retracting method. So, for example, to move the block
It is described in FIG. 5 of Japanese Utility Model Application Laid-Open No. 62-44999.
Roller device, that is, the front and rear ends of the center plate and
Endless chains on the upper and lower surfaces of the center plate
Uses a roller device in which multiple connected rollers are arranged so that they can roll.
Can move the block body
However, this roller device has a block
To move up to the block
However, there is a problem that it is unstable and easily falls.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to facilitate movement of a block body.

[Configuration of the Invention]

[0009]

The present invention SUMMARY OF] is a mounting method of the preformed multiple concrete block member 1,1a were concrete blocks Ru installed 1b in a continuous installation position, the front and rear edges The front and rear edges of the center plate 24 formed in an arc shape and the center plate 24
A plurality of rollers 26 connected to the upper and lower surfaces by endless chains 25
Is arranged to be able to roll and the above-mentioned through the plurality of rollers 26
Above the center plate 24, the block bodies 1, 1a, 1b
Using the roller device 21 having a top plate 22 for placing it a guide groove 16 which at least the bottom surface was steel 17 on both sides of the installation surface 11 for supporting the block body 1, 1a, and 1b
The roller device 21 is provided on the bottom surfaces of the guide grooves 16 on both sides.
Respectively , and the above-mentioned top of the roller device 21 on both sides
Plate 22 block body 1,1a on, placing the 1b, the blanking
The lower ends of the lock bodies 1, 1a, 1b face the installation surface 11
Horizontal steel 37 with detachable vertical steel 38 attached to both sides
The block body 1, 1a, 1b is moved along the guide grooves 16 on both sides via the roller devices 21 on both sides, and the block bodies 1, 1 moved to a predetermined position are fixed . Remove the above-mentioned fall prevention support 36 from 1a, 1b ,
The block body 1,1a, 1b a jack-up to this part
Pull the roller device 21 from the lower part of the lock bodies 1, 1a, 1b respectively.
After removing, the block body 1, 1a, and placed 1b to the installation surface 11, sequentially starting block body 1, 1a of the block body 1, 1a of generic to 1b, the late when connecting 1b block body
Starter of fall prevention support 36 fixed to 1, 1a, 1b
Remove the vertical steel material 38 located on the block body 1, 1a, 1b side.
To the starting block bodies 1, 1a, 1b .

[0010]

According to the concrete block installation method of the present invention, when the blocks 1, 1a, 1b are moved, the blocks 1, 1a, 1b are moved.
A plurality of rollers 26 of the roller device 21 supporting 1a and 1b roll between the center plate 24 and the steel material 17 of the roller device 21 and circulate around the center plate 24 by the chain 25. That is, the top plate of the roller device 21 on both sides
22. Place the blocks 1, 1a, 1b on
Vertical steel 38 with lower end facing installation surface 11 at 1, 1a, 1b
Overturned with horizontal steel 37 removably attached to both sides
Fix the support 36 for prevention. And this block
Guides on both sides of the body 1, 1a, 1b via roller devices 21 on both sides
Block body that moves along 16 and moves to a predetermined position
Remove the above-mentioned fall prevention support 36 from 1, 1a, 1b,
Jack up the blocks 1, 1a, 1b
Pull the roller device 21 from the lower part of the lock bodies 1, 1a, 1b respectively.
After pulling out, install these blocks 1, 1a, 1b on the installation surface 11.
I do. Then, in order to the starting block body 1, 1a, 1b
It connects the later blocks 1, 1a, 1b,
At this time, the fall prevention fixed to the later block body 1, 1a, 1b
On the starting block body 1, 1a, 1b side of the stop support 36
Remove the vertical steel material 38 to be placed and remove the starting block body 1, 1a,
Connect to 1b.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A concrete block installation method according to the present invention will be described with reference to the drawings.

In FIGS. 1 to 4, reference numeral 1 denotes a culvert body as a block body. Each culvert body 1 embeds necessary metal fittings such as reinforcing bars and anchor bolts (not shown) in concrete, and is embedded in a formwork. As shown in FIG. 3, it is formed in advance into a hollow box shape having a rectangular cross-section with open front and rear end faces composed of a bottom plate 2, a pair of left and right wall plates 3 and a top plate 4, as shown in FIG.

As shown in FIG. 2, each of the culvert bodies 1 has a convex portion 7 formed around an opening at a front end surface thereof and a concave portion 8 formed around an opening portion at a rear end surface thereof. By fitting the convex portion 7 and the concave portion 8, it is possible to connect the front and rear portions and to continuously install the same. An allowance is provided for adjusting the position.

As the culvert body 1, a bottom plate 2, left and right wall plates 3 and a top plate 4 are integrally formed into a rectangular shape in cross section from the beginning, and a horizontal dividing plane P in the middle of the wall plate 3. In some cases, the culvert bodies 1a and 1b as upper and lower block bodies which are separately formed by dividing the upper and lower parts into two parts are later combined and integrated.

Reference numeral 11 denotes an installation surface on which the culvert body 1 is continuously installed. The installation surface 11 is placed on a rubble stone base 12 on which a rubble stone is spread to a predetermined thickness, and is cured by being poured. It is formed by.

When the foundation concrete 13 is cast, a pair of L-shaped steel members 15 are installed on both left and right sides of the installation surface 11 via reinforcing steel bars 14 (shown in FIG. 1). A guide groove 16 is formed, and a steel plate 17 as a steel material is installed at the bottom of the left and right guide grooves 16 and welded to a pair of L-shaped steel materials 15 respectively .

Further, keep the support frame 18, 19 at both ends in the longitudinal direction of the setting surface 11 made of steel (shown in FIG. 4) and <br/> respectively installed.

Reference numeral 21 denotes a roller device such as a chill tank (registered trademark). As shown in FIG. 5, the roller device 21 has a pair of left and right side plates 23 fixed to a lower portion of a top plate 22 in parallel. horizontally secure the center plate 24 forming the front and rear edges in an arc shape between the pair of side plates 23, the front and rear edges and the sensor of the center plate 24
A pair of left and right endless chains on the upper and lower surfaces of the tar plate 24
A plurality of rollers 26 axially connected at 25 are arranged so as to be able to roll.

The roller devices 21 are disposed two on each of the steel plates 17 constituting the bottom surfaces of the left and right guide grooves 16, and a pair of front and rear roller devices 21 disposed in each guide groove 16 are shown in FIG. are connected by a connecting plate 31, the outer portion of the top plate 22 of the respective roller device 21 horizontal steel plate 32 Ru <br/> be placed on the bottom of the culvert body 1 is fixed, the outer end of the horizontal steel plate 32 Is fixed to a vertical steel plate 33 supporting the outer surface of the culvert body 1.

When the roller device 21 moves on the steel plate 17 on the bottom surface of the guide groove 16, the plurality of rollers 26 roll between the center plate 24 and the steel plate 17, and the chain
25 circulates around the center plate 24, so that there is no need to manually change the roller 26 from the rear in the traveling direction to the front as in the case of a normal independent roller.
Since the distance between the rollers 26 is constant, the load applied to the rollers 26 does not greatly fluctuate.

Numeral 36 denotes a support for preventing the vehicle from overturning. The support 36 is provided at the lower part of both ends in the front-rear direction of a horizontal steel material 37 fixed horizontally on the bottom plate 2 of the culvert body 1.
38 in which the removable mounted, the lower end portion of the front and rear vertical steel 38 is controlled so as to face each other at predetermined intervals in the installation surface 11, as provided, one on the left and right of the culvert body 1 It has become.

When the culvert body 1 is installed, immediately before the culvert body 1 is installed on the foundation concrete 13 on the installation surface 11, as shown in FIG. Spread mortar 41 thinly.

In this state, as shown in FIG. 4, the culvert body 1 is lowered to the rear end of the installation surface 11 by a wire 42 such as a vehicle-mounted crane, and the four roller devices 21 are arranged in advance.
Is placed on the top plate 22 with the two left and right vertical steel plates 33 connected to the top plate 22 in alignment.

Next, a pair of left and right supports 36 is fixed to the bottom plate 2 of the culvert body 1.

Thereafter, a pair of left and right wires 43 wound up by, for example, a winch is provided from the pair of right and left pulleys 44 provided on the support frame 19 at the rear end of the installation surface 11 to the support frame 18 at the front end of the installation surface 11. After being wrapped around a pair of left and right pulleys 45, it is connected to the bottom plate 2 of the culvert body 1 on the roller device 21, and
Wind slowly and evenly.

Then, the culvert body 1 on the roller device 21
Is pulled toward the support frame 18 at the front end of the installation surface 11 and moves via the roller device 21 along the pair of left and right guide grooves 16. In addition, it is possible to move along the pair of left and right guide grooves 16 by pushing without using a winch or the like.

Then, with the culvert body 1 moved to a predetermined position, the support 36 is removed.

Thereafter, a pair of front and rear jacks are engaged with the culvert body 1 on the left and right outer surfaces, respectively.
The culvert body 1 is jacked up by uniformly operating the base jack, and the roller device 21 is pulled out from under the culvert body 1.

After the culvert body 1 has been installed, the next culvert body 1 is lowered to the rear end of the installation surface 11 by a wire 42 such as a vehicle-mounted crane in the same manner as described above. The support 36 is fixed to the culvert body 1 and the culvert body 1 is pulled toward the culvert body 1 previously installed by a winch or the like.

The support 36 of the culvert body 1
Is about to hit the culvert body 1 installed earlier,
The vertical steel material 38 on the front side of the support 36 is removed from the horizontal steel material 37, and thereafter, as described above, the culvert body 1 is moved to a predetermined position and connected to the culvert body 1 previously installed, and the support 36 is completely Then, the culvert body 1 is jacked up, the roller device 21 is pulled out, and the installation position is finely adjusted to install the culvert body 1.

In this way, the later culvert 1 is connected to the earlier culvert 1 sequentially.

As described above, the culvert body 1 is lowered at a position where a crane truck or the like can move, and the culvert body 1 is lowered.
In the retracting method in which the culvert body 1 is sequentially connected to the starting culvert body 1 and the box culvert is constructed by sequentially moving the starting culvert body 1 to the position where the crane truck or the like cannot move, the roller device 21 is installed. By using this, the culvert body 1 can be easily moved, and work safety can be easily ensured.

In the above-described embodiment, the culvert body 1 having a rectangular cross section having a bottom plate 2, left and right wall plates 3 and a top plate 4 is shown.
However, at a site where an integral culvert body cannot be installed, the culvert body 1 having a rectangular cross section is vertically divided into two parts by a middle horizontal dividing plane P of the wall panel 3 and separately formed. Culvert bodies 1a and 1b are separately constructed.

In this case, the construction of the lower culvert body 1b is exactly the same as in the above-described embodiment.

When the upper culvert body 1a is constructed, a guide groove is previously formed on the upper end surface of the wall board 3 of the lower culvert body 1b, that is, a horizontal dividing plane P, and the construction is completed and the connection is established. When the steel plate 17 is installed in the guide groove of the dividing plane P on the wall 3 of the large number of lower culvert bodies 1b, the roller device 21 can be used here. Construction can be performed.

In the embodiment described above, the formation of the guide groove 16
Although a pair of L-shaped steel material 15 and steel plate 17 are used, a steel material having a U-shaped cross section may be used from the beginning.

[0037]

As described above, according to the present invention, a roller device is used for moving a plurality of preformed concrete blocks when the blocks are successively installed. While it is easy, at this time, the roller instrumentation
Place the block on the top plate of the
Vertical steel material with the lower end of the rack body facing the installation surface
Removable horizontal support with horizontal steel
Since the port is fixed, block when moving the block
If the body is tilted due to vibration, etc.
The vertical end of the vertical steel material in the direction
Supports the body, so this support
The block body can be prevented from falling over when moving,
It is easier to ensure work safety. Also, starting blocks
When connecting the late block body to the body, the late block body
Starter block side of fall prevention support fixed to the
Remove the vertical steel material located at
So, install the late block body on the first block body
It can be connected and installed continuously without interruption
it can.

[Brief description of the drawings]

FIG. 1 is an enlarged front view sectional view of a concrete block installation method according to an embodiment of the present invention in a construction state.

FIG. 2 is an enlarged sectional view in a side view of a working state of the embodiment.

FIG. 3 is a front sectional view of the working example of the embodiment.

FIG. 4 is a side sectional view of the working state of the embodiment.

FIG. 5 is a perspective view of a roller device used for construction of the embodiment.

[Explanation of symbols]

1, 1a, 1b Culvert body as block body 11 Installation surface 16 Guide groove 17 Steel plate as steel material 21 Roller device 22 Top plate 24 Center plate 25 Chain 26 Roller 36 Roller prevention support 37 Horizontal steel material 38 Vertical steel material

Claims (1)

(57) [Claims] 1. A preformed a plurality of concrete block member has a mounting method of continuously concrete blocks Ru installed to the installation position, said center plate to form a front and rear end edges in a circular arc shape <br / > or a plurality of rollers coupled with endless chain on the upper and lower surfaces of the front and rear edges and the center plate rollably arranged
Above the center plate through the plurality of rollers
The use of a co <br/> b device having a top plate for placing the block body, respectively at least the bottom surface of the steel with a guide groove on both sides of the installation surface disposing the block body, the sides the roller device is arranged on the bottom surface of the guide groove, the two
A block body is placed on the top plate of the roller device on the side, and the lower end of the block body is opposed to the installation surface.
Horizontal steel with detachable vertical steel on both sides
Fix the support to prevent falling
It moves along the guide grooves on both sides through the roller devices on both sides ,
From block body that has moved to a predetermined position for the anti-tip
Support removed, subsequent to the block body after the roller device was withdrawn each <br/> from the lower portion of the block body jacked up, the block body into the block body installed sequentially starting with the installation surface When connecting the block body of
Starter of fall prevention support fixed to the block body
Remove the vertical steel material located on the block body side and
A concrete block installation method characterized by being connected to a block body .