KR20130013884A

KR20130013884A - Concrete construction method

Info

Publication number: KR20130013884A
Application number: KR1020110075791A
Authority: KR
Inventors: 손준오
Original assignee: 손준오
Priority date: 2011-07-29
Filing date: 2011-07-29
Publication date: 2013-02-06

Abstract

PURPOSE: A concrete structure construction method is provided to improve the construction quality highly by the finishing of concrete through hardening with a plastering unit rotating in contact with concrete to prevent concrete crack. CONSTITUTION: A concrete structure construction method comprises the following steps of: the step of preparing a main body(10) having on the upper part an inlet(110) for the input of concrete and a space inside connected with the inlet; the step of putting concrete into the inlet of the main body; and the step of plastering by a plastering unit which is provided on the rear side and rotates in contact with the concrete put into through the inlet into the space.

Description

Concrete structure construction method {CONCRETE CONSTRUCTION METHOD}

The present invention can more easily construct a new concrete structure, including a median divider consisting of a concrete protective wall in the center of the road and a retaining wall made of a concrete protective wall on the roadside, as well as on the outer surface of the concrete protective wall installed on the road. The concrete protection wall installed on the road can be improved by covering the concrete, and the cost can be greatly reduced. Furthermore, the concrete is prevented from cracking through the plastering part rotating in contact with the concrete. The present invention relates to a method for constructing a concrete structure, which can be greatly improved in construction quality.

In general, roads including exclusive roads such as expressways are installed with rails or concrete barriers, that is, central dividers, in order to prevent center line invasion and to prevent visual interference caused by headlights of opposite lanes. In order to ensure higher safety, the central partition is constituted by a concrete barrier.

Concrete protection wall constituting the central separator is installed on the highway has a height of about 860mm from the road surface and the shape of the concrete retaining wall of the floor width structure of about 620mm ~ 670mm, and has a structure of installing a shielding net of about 400mm on the top.

In the case of a large vehicle, the concrete barrier wall easily enters the opposite lane and may cause a large traffic accident, and the anti-glare network also increases the risk and fatigue of night driving because it does not completely block the headlights.

Due to these problems, in accordance with the aging trend of the existing median separator, the existing median separator is dismantled, the width of the floor is increased from 700mm to 720mm, and the anti-glare net is unnecessarily raised to a height of approximately 1270mm.

However, the method of dismantling existing concrete barriers and installing concrete barriers of a new standard has enormous cost and environmental problems.

The present invention has been created to solve the above problems, it is possible to more easily construct a new concrete structure, including a central separator consisting of a concrete protective wall, etc. in the center of the road, and a retaining wall made of a concrete protective wall, etc. on the roadside. In addition, it is possible to improve the construction of concrete protection walls already installed on the road by covering concrete on the outer surface of the concrete protection walls already installed on the road, as well as to reduce costs. It is an object of the present invention to provide a method for constructing a concrete structure that can be compacted so that cracks do not occur in concrete through the plastering part, which can greatly improve the construction quality.

The present invention for achieving the above object comprises the steps of: a) preparing a main body which is formed with an inlet through which concrete is introduced, and a space communicating with the inlet; b) injecting concrete into the inlet of the main body; c) plastering the concrete through a plastering part which is provided at the rear side of the main body and rotates in contact with the concrete introduced into the space through the inlet; and provides a method of constructing a concrete structure.

Here, the plastering step of step c) and the rotary shaft is rotatably vertically provided on one side of the rear side and the other side of the rear side of the main body; Rotating blades are vertically provided at equal intervals on the rotating shaft and rotate along the rotating shaft in contact with concrete; It is preferably made to include; a drive member coupled to the upper side of the rotary shaft to rotate the rotary shaft.

Alternatively, the plastering step of step c) and the rotating shaft is rotatably vertically provided respectively on one side of the rear side and the other side of the rear side of the main body; Rotating blades are vertically provided at equal intervals on the rotating shaft and rotate along the rotating shaft in contact with concrete; A drive member for rotating the rotary shaft; And a rotational force transmitting member provided between the driving member and the rotating shaft to transfer the rotating force of the driving member to the rotating shaft.

And, the drive member of step c) is preferably made of a hydraulic motor.

Furthermore, d) it is preferable that the step of spraying the curing agent to the concrete (5) through the curing agent injection unit 30 provided on the rear side of the main body (10).

In particular, the curing agent injection unit of the step d) is provided on the rear side of the main body, the curing agent inlet pipe in which the curing agent is introduced; A nozzle which is provided at a predetermined interval in the curing agent inlet pipe and sprays the curing agent into concrete; It is preferably made to include; a curing agent supply member for supplying a curing agent into the curing agent inlet pipe.

In addition, it is preferable that an elastic member is provided between the rotary shaft and the rotary blade of step c).

The present invention can more easily construct a new concrete structure, including a median divider consisting of a concrete protective wall in the center of the road and a retaining wall made of a concrete protective wall on the roadside, as well as on the outer surface of the concrete protective wall installed on the road. The concrete protection wall installed on the road can be improved by covering the concrete, and the cost can be greatly reduced. Furthermore, the concrete is prevented from cracking through the plastering part rotating in contact with the concrete. As it can be finished, there is an effect that the construction quality can be greatly improved.

1 is a perspective view schematically showing a main body for a method for constructing a concrete firewall, which is an embodiment of the present invention;
Fig. 2 is a sectional view taken along the line A-A in Fig. 1,
3 and 4 are front views schematically showing the plaster portion of FIG. 1,
5 is a front view schematically showing the curing agent spray unit of FIG. 1,
FIG. 6 is a perspective view schematically illustrating a process in which concrete is covered on an outer surface of an existing concrete protective wall;
7 is a plan view schematically illustrating a process in which concrete is overlaid on an outer surface of a pre-installed concrete protective wall,
FIG. 8 is a cross-sectional view taken along line BB of FIG. 6.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that the scope of the present invention is not limited to the following embodiments, and various modifications may be made by those skilled in the art without departing from the technical scope of the present invention.

Concrete structure construction method of an embodiment of the present invention is largely, the main body preparation step (hereinafter referred to as 'a) step), the concrete input step (hereinafter referred to as' b) step ') and plastering step (hereinafter' c) Step).

1 is a perspective view schematically showing a main body 10 for a concrete construction wall construction method of an embodiment of the present invention, Figure 2 is a cross-sectional view taken along the line AA of FIG.

First, the step a) is a step of preparing a main body 10 in which the inlet 110 into which the concrete 5 is injected is formed, and a space 120 communicating with the inlet 110 is formed therein. .

The main body 10 may be prepared in a prefabricated state in a factory or the like.

As shown in FIGS. 1 and 2, an inlet 110 through which the concrete 5 is introduced is formed at an upper portion of the main body 10.

A space 120 is formed in the main body 10 to communicate with the inlet 110.

In the space 120, the concrete 5 introduced into the inlet 110 and falling by its own weight may be accommodated.

Through the concrete 5 accommodated in the space 120, it is possible to more easily construct a concrete structure, including a central separator consisting of a concrete protective wall in the center of the road, and a retaining wall made of a concrete protective wall in the street.

On the other hand, in the space 120 may be accommodated concrete barrier wall (7 of Figure 8) and the like already installed on the road.

In this state, the concrete 5 injected into the inlet 110 may fall by its own weight into the space 120 and be overlaid on the outer circumferential surface of the concrete protective wall 7 installed on the road accommodated in the space 120. .

Through the concrete 5 overlaid on the outer circumferential surface of the concrete protective wall 7 installed on the road, it is possible to improve and repair the concrete protective wall pre-installed on the road.

Next, step b) is a step of injecting the concrete (5) into the inlet 110 of the main body (10).

The main body 10 may include a hopper 11 and a forming unit 12.

The inlet 110 may be formed in the hopper 11 with the upper side opened.

The inlet 110 receives the concrete (5 of FIG. 8) supplied from a conveyor (410 of FIG. 7) mounted on a known concrete finisher (40 of FIG. 7) to guide the space 120.

The forming part 12 is a moving formwork for forming the concrete protective wall 7 shape, it may be largely composed of a reinforcement frame 121 and screed 122.

The reinforcement frame 121 may be formed in a box shape of a rectangular shape.

The hopper 11 may be integrally formed at the upper center portion of the reinforcement frame 121.

The space 120 may be formed in the reinforcement frame 121, the lower side of which is in communication with the inlet 110 of the hopper 11.

The vibrator 60 may be provided in the space 120 to generate vibrations.

The vibrator 60 is operated by the driving hydraulic pressure of the concrete finisher 40, and is mounted on the vibrator attachment port 610 protruding in a bar structure into the space 120.

Through the vibration generated by the vibrator 60, for example, the concrete (5) is more easily passed through the concrete (5 of FIG. 8) between the wire mesh (70 of FIG. The outer peripheral surface of (7) can be installed without voids.

An attachment hole 123 for mounting the main body 10 on the horizontal boom 420 of the concrete finisher 40 may be vertically integrally formed on one side of the reinforcement frame 121.

The attachment hole 123 may be attached and fixed to the horizontal boom 420 of the concrete finisher 40 in a bolted state.

The screed 122 is formed in the shape of the concrete protection wall 7 may be provided in the front and rear inside the space 120 of the reinforcement frame 121, respectively.

The screed 122 serves to smoothly finish the surface of the concrete 5 overlaid on the outer circumferential surface of the concrete protective wall 7 installed in advance.

Next, the step c) is provided on the rear side of the main body 10 and the concrete through the plastering portion 20 to rotate in contact with the concrete 5 introduced into the space 120 through the inlet 110 The stage of plastering.

The plastering part 20 is rotated forward and backward in contact with the outer circumferential surface of the concrete 5 introduced into the space 120 through the inlet 110.

3 and 4 are front views schematically showing the plaster portion 20 of FIG.

Next, the plastering portion 20 of step c) may be made to include a rotating shaft 210, a rotary blade 220 and a driving member 230, as shown in Figure 3, large.

The rotation shaft 210 may be vertically rotatably mounted on one side of the rear side and the other side of the rear side of the reinforcing frame 121 of the forming unit 12 of the main body 10.

Horizontal bars (121a of FIG. 7 of FIGS. 1 and 7 of FIG. 7 of FIG. 1 and 7) which are horizontally extended with a predetermined length in the rear direction of the reinforcing frame 121 are respectively integrally formed on one side of the rear side and one side of the rear side of the reinforcement frame 121. It can be formed as.

The rear end of the horizontal bar 121a may be provided in a state in which bearings (121b of FIGS. 1 and 7) are welded to each other.

The upper end and the lower end of the rotating shaft 210 may be axially coupled to the bearing 121b, respectively.

The rotary blade 220 may be vertically provided at equal intervals to the rotary shaft (210).

In FIG. 1, two rotary blades 220 are vertically provided on the rotary shaft 210, but two or less or two or more rotary blades 220 are vertically provided at equal intervals on the rotary shaft 210. Of course it can be.

An inclined surface 221 may be formed on one side surface of the rotary blade 220 inclined downward in the direction of the lower end of the rotary shaft 210 toward the lower side from the upper side.

The rotary blades 220 may be formed in a right inverted trapezoidal shape or the like as shown in Figs.

The rotary blade 220 may be rotated forward and backward along the rotating shaft 210 in a state in contact with the outer peripheral surface of the concrete (5).

The driving member 230 is axially coupled to the upper side of the rotating shaft 210 may rotate the rotating shaft 210 forward and backward.

A horizontal plate 121c horizontally extended in a rearward direction of the reinforcement frame 121 at one rear upper side and the other side rear side of the reinforcement frame 121 so as to be positioned in an upper upper direction of the rotation shaft 210. It can be formed in one piece.

The driving members 230 may be mounted vertically in a state where the bolts are fixed to the upper surface of the horizontal plate 121c.

The driving shaft 231 of the driving member 230 may be axially coupled to the upper side of the rotating shaft 210 through the horizontal plate 121c vertically.

Compacting the concrete 5 more easily so that cracks do not occur in the concrete 5 through the plastering part 20 including the rotating shaft 210, the rotary blade 220, and the driving member 230. There is an advantage of being able to close.

As another example, the plastering unit 20 may include the rotation shaft 210, the rotation blade 220, the driving member 230, and the rotation force transmission member 240 as shown in FIG. 4.

Since the rotary shaft 210 and the rotary blade 220 are configured in the same manner as one example, the repeated description thereof will be omitted.

Unlike one example, the driving member 230 is horizontal plate 121c horizontally extended to a predetermined length in the rear direction of the reinforcement frame 121 on the rear side central portion of the reinforcement frame 121 as shown in FIG. It can be seated vertically in a bolted state to the upper surface of the.

The driving shaft 231 of the driving member 230 may vertically penetrate the horizontal plate 121b.

The rotation force transmitting member 240 may be provided between the lower side of the drive member 230 and the upper side of the rotation shaft 210.

The rotational force transmitting member 240 may include a gearbox 241, a rotation shaft 242, and a bevel gear 243.

The gear box 241 may be formed in a rectangular shape or the like.

The gear box 241 may be provided in a bolt fixed state on the lower surface of the horizontal plate 121b of FIG.

The rotation shaft 242 may horizontally penetrate the gear box 241 so that a central portion thereof may be accommodated in the gear box 241.

The bevel gear 243 may include a first bevel gear 243a, a second bevel gear 243b, a third bevel gear 243c and a fourth bevel gear 243d.

The first bevel gears 243a may be horizontally coupled to the upper side of the rotation shaft 210, respectively.

The second bevel gear 243b may be axially coupled to the one end and the other end of the rotation shaft 242 in a vertical state while being engaged with the first bevel gear 243a.

The third bevel gear 243c may be accommodated in the gearbox 241 in a state in which the third bevel gear 243c is vertically coupled to the center of the rotation shaft 242.

The fourth bevel gear 243d is horizontally coupled to the lower end of the drive shaft 231 of the driving member 230 while being engaged with the third bevel gear 243a to be accommodated in the gearbox 241. Can be.

The forward rotational power of the drive shaft 231 of the drive member 230 can be more easily transmitted to the rotation shaft 210 through the rotation force transmission member 240.

A predetermined thickness is also provided on the outer circumferential surface of the concrete protective wall 7 installed on the road through the plastering part 20 including the rotating shaft 210, the rotary blade 220, the driving member 230, and the rotational force transmitting member 240. Not only can the concrete 5 be compacted more easily so that cracks do not occur in the overlaid concrete 5, and in particular, through the rotational force transmitting member 240, the two driving members 230 as an example. By using one of the driving member 230 rather than the) it is an advantage that it is possible to easily forward and reverse rotation of the rotating shaft (210).

Next, the drive member 230 of step c) is preferably made of a hydraulic motor.

In the case of a general motor, there is a high risk of failure due to an overload when continuously used, whereas in the case of a hydraulic motor, it is relatively inexpensive compared to a general motor and because of its characteristics, the overload does not occur even if it is continuously used. There is an advantage to be able to rotate the 210 more easily.

The driving member 230 made of a hydraulic motor may operate by driving hydraulic pressure of the concrete finisher 40.

Alternatively, the driving member 230 made of a hydraulic motor may be operated by receiving oil from an oil unit separately provided in the concrete finisher 40 although not shown in the drawing.

The oil unit is an oil passage in which the oil is stored; A pump for supplying the oil stored in the oil reservoir to the hydraulic motor through a connection pipe connected to the hydraulic motor; consisting of, which is known in the art and will be apparent to those skilled in the art The following detailed description will be omitted since it is possible.

5 is a front view schematically showing the curing agent spray unit 30 of FIG.

Next, the curing agent injection step (hereinafter referred to as 'd step') may be further provided.

Step d) is a step of spraying the curing agent to the concrete (5) through the curing agent injection unit 30 provided on the rear side of the main body (10).

More specifically, as shown in Figure 5 in the central portion of the rear side of the reinforcing frame 121 of the forming unit 12 of the main body 10, a curing agent injection unit for injecting a liquid curing agent known as the concrete (5) 30 may be provided.

By spraying the liquid curing agent to the concrete (5) more easily through the curing agent spraying unit 30 can be more easily protected from harmful effects such as temperature, load, breakage, etc. There is an advantage.

As shown in FIG. 5, the curing agent spray unit 30 may include a curing agent inlet tube 310, a nozzle 320, a curing agent supply member 330, and a connecting tube 340.

The curing agent inlet pipe 310 is formed in the shape of the concrete barrier wall 7 is to be integrally provided in the state welded to the center of the rear side surface of the reinforcement frame 121 of the forming portion 12 of the main body 10 Can be.

A known liquid curing agent may be introduced into the curing agent inflow pipe 310.

The nozzle 320 is provided at a predetermined interval on the inner surface of the curing agent inlet pipe 310 may spray the liquid curing agent to the concrete (5).

The curing agent supply member 330 may supply a curing agent into the curing agent inlet pipe 310.

The curing agent supply member 330 may be composed of a curing agent receiving cylinder 331, the connecting pipe 332 and the pump 333.

The curing agent receiving container 331 may be separately provided in the concrete finisher 40.

A known liquid curing agent may be accommodated in the curing agent container 331.

One end of the connecting pipe 332 may be securely connected to the upper center of the curing agent inlet tube 310 so as to communicate with the inside of the upper side of the curing agent inlet tube (310).

The other end of the connecting pipe 332 may be securely connected to the lower side of one side of the curing agent receiving container 331 to communicate with the lower inside of the curing agent receiving container 331.

The pump 332 is provided on the other side of the connecting pipe 332 is the curing agent of the known liquid contained in the curing agent receiving container 331 through the connecting pipe 332 through the curing agent inlet pipe ( 310).

Liquid curing agent to the concrete (5) more easily through the curing agent injection unit 30 including the curing agent inlet pipe 310, the nozzle 320, the curing agent supply member 330 There is an advantage to spraying.

6 is a perspective view schematically illustrating a process in which the concrete 5 is overlaid on the outer circumferential surface of the pre-installed concrete protective wall 7, and FIG. 7 schematically illustrates a process in which the concrete 5 is overlaid on the outer circumferential surface of the pre-installed concrete firewall. It is a top view shown by.

As shown in FIG. 6 and FIG. 7, the concrete barrier wall improving device is driven back and forth along the concrete finisher 40. In this case, the concrete barrier wall is supplied by supplying concrete 5 into the inlet 110 of the main body 10. (7) new construction, or by covering the outer peripheral surface of the concrete protective wall (7) pre-installed on the road can be improved construction of the concrete protective wall (7) already installed on the road, in particular the plastering (20) Through) can be compacted so that the crack in the concrete (5) does not occur.

Next, as shown in FIG. 7, an elastic member 250 may be provided between the rotation shaft 210 and the rotation blade 220.

One side of the elastic member 250 may be fixedly connected to the other side of the rotary blade 220, the other side of the elastic member 250 may be integrally connected to the outer peripheral surface of the rotary shaft 210 have.

As shown in FIG. 7, the elastic member 250 may be bent at a predetermined angle by an elastic force during the process of closing the outer circumferential surface of the concrete 5 by rotating the rotary blade 220 of the plastering part 20 forward and backward. Can be.

Rotating blade 220 of the plastering portion 20 is rotated forward and backward and the elastic member 250 is bent at a predetermined angle during the process of compacting the outer peripheral surface of the concrete (5) is the rotary shaft 210 and the rotary blade ( Since it is provided between the 220 and the rotary blade 220 can be compacted as if sweeping the outer circumferential surface of the concrete (5), thereby the concrete with a higher efficiency so as not to crack the concrete (5) There is an advantage that it is possible to close (5).

A spring or the like may be used as the elastic member 250, but is not necessarily limited thereto.

FIG. 8 is a cross-sectional view taken along line BB of FIG. 6.

On the other hand, Figure 8 is a cross-sectional view showing a state in which the improved construction of the concrete 5 is covered with a predetermined thickness on the outer circumferential surface of the concrete protective wall (7) already installed on the road,

Anchor bolts 711, 721, and 731 are respectively installed on the base portion 71, the body portion 72, and the upper end portion 73 of the concrete barrier wall 7, and the anchor bolts installed on the body portion 72 ( 721 is connected and fixed by the reinforcing rods 722 arranged in the longitudinal direction, the wire mesh 70 is wrapped in the concrete protection wall 7 is fixed to the anchor bolts (711, 721, 731), respectively. This is a well-known technology and will be apparent to those skilled in the art to which the present invention pertains. Therefore, the following detailed description will be omitted.

The present invention configured as described above can easily newly construct a concrete structure including a central separator consisting of a concrete protective wall 7 or the like in the center of the road and a retaining wall made of a concrete protective wall 7 or the like on the roadside. Not only the concrete protective wall 7 installed on the road can be improved by covering the outer surface of the concrete protective wall (7) pre-installed on the road, as well as the cost can be greatly reduced, further, In particular, through the plastering portion 20 that rotates in contact with the concrete (5) can be compacted so that the crack does not occur in the concrete (5) has the advantage that the construction quality can be greatly improved.

10; Main body, 20; Cog.

Claims

a) preparing a main body 10 in which an inlet 110 into which the concrete 5 is injected is formed, and a space 120 communicating with the inlet 110 is formed therein;
b) injecting concrete (5) into the inlet (110) of the main body (10);
c) plastering concrete through a plastering part 20 provided at the rear side of the main body 10 and rotating in contact with the concrete 5 introduced into the space 120 through the inlet 110; Concrete structure construction method comprising the.

The method of claim 1,
The plastering portion 20 of the step c) is the rotary shaft 210 is rotatably vertically provided on one side of the rear side and the other side of the rear side of the main body 10;
A rotary blade 220 which is vertically provided at equal intervals on the rotary shaft 210 and rotates along the rotary shaft 210 in contact with the concrete 5;
And a driving member 230 coupled to an upper side of the rotating shaft 210 to rotate the rotating shaft 210.

The method of claim 1,
The plastering portion 20 of the step c) is the rotary shaft 210 is rotatably vertically provided on one side of the rear side and the other side of the rear side of the main body 10;
A rotary blade 220 which is vertically provided at equal intervals on the rotary shaft 210 and rotates along the rotary shaft 210 in contact with the concrete 5;
A drive member 230 for rotating the rotary shaft 210;
And a rotation force transmission member 240 provided between the driving member 230 and the rotation shaft 210 to transmit the rotational force of the driving member 230 to the rotation shaft 210. Structure construction method.

4. The method according to claim 2 or 3,
The drive member 230 of step c) is a concrete structure construction method, characterized in that consisting of a hydraulic motor.

The method of claim 1,
d) concrete structure construction method characterized in that the step of spraying the curing agent to the concrete (5) through the curing agent injection unit 30 provided on the rear side of the main body (10).

6. The method of claim 5,
The curing agent injection unit 30 of step d) is provided on the rear side of the main body 10, the curing agent inlet tube 310, the curing agent is introduced therein;
A nozzle 320 provided at a predetermined interval on the curing agent inlet pipe 310 to inject the curing agent into the concrete 5;
And a curing agent supply member (330) for supplying a curing agent into the curing agent inlet pipe (310).

4. The method according to claim 2 or 3,
Concrete structure construction method characterized in that the elastic member 250 is provided between the rotary shaft 210 and the rotary blades 220 of step c).