JP5268814B2 - Machine construction method and apparatus for concrete structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for mechanically constructing a concrete structure, which enable a subsequent structure to be continuously constructed after the construction of a preceding structure. <P>SOLUTION: A mold 2, which comprises a leading mold 3, a hopper 4 and a molding mold 5, is moved along a path where a reinforced concrete structure is constructed; reinforcements 9 arranged almost along the movement path are sequentially introduced into the leading mold 3; and the reinforced concrete structure is automatically and mechanically constructed by supplying freshly mixed concrete from the hopper 4. The outside of the leading mold 4 is formed in such a shape as to come into contact with the outer shape of the reinforcement 9; a lifting device 22, the upper-side end of which is inclined to a lower side, is formed in such a shape as to protrude from an edge of an inside form 8; a leading end of the lifting device is introduced into an opening 15 of an end form fixed to the end of the reinforcement 9, along with the movement of the mold; and the reinforcement 9 is introduced into the inside form 8 by the further movement of the mold 2, so that the reinforced concrete structure can be continuously constructed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a method and apparatus for continuously machined reinforced concrete structures such as side grooves, protective fences, side walls, and central separators provided on a road, and more specifically, referred to as a slipform method. The present invention relates to a continuous machine construction method for a reinforced concrete structure and an apparatus used for the construction method.

  Conventionally, reinforced concrete structures such as road gutters and side walls, guard fences, central separators, etc. are preliminarily placed on the ground, fixed on the base concrete and surrounded by a formwork, Ready-mixed concrete is placed in the formwork. In order to fix the reinforcing bars to the base concrete, the reinforcing bars are fixed to anchor reinforcing bars or insertion bars embedded in the base concrete in advance. Conventionally, all of these operations have been performed manually by workers, and the construction efficiency has been extremely poor. Therefore, in recent years, a mechanical method called a slip form method has been adopted.

  In the slip form method, the machine serves as a formwork, and a continuous concrete structure is constructed by moving the machine. As shown in FIG. The mold A is fixed to the substrate. The mold A is composed of a leading mold B, a hopper portion C, and a molding mold D. Ready-mixed concrete is supplied to the hopper C from a belt conveyor E.

  As a construction method, a roadbed or a roadbed F or the like is adjusted in advance to a normal height on a road, and a reinforcing bar G is arranged on the prepared roadbed or roadbed F or the like as shown in FIG. This arrangement is a rough arrangement that does not cause a problem in the concrete placement of the reinforced concrete structure S to be constructed later.

  The mold A moves together with the vehicle V by automatic control according to a guide. The pre-arranged reinforcing bar G enters the leading mold B as the mold A moves, and is guided to a normal position by the reinforcing bar guide. And the ready concrete is continuously supplied from the belt conveyor E to the hopper part C.

  Reinforcing bars or pre-assembled reinforcing bars G are arranged on the roadbed or roadbed F or the like, but in order to continuously put ready-mixed concrete, the cover thickness of the concrete is also secured on the lower side of the reinforcing bars G. It is also necessary, and by providing a reinforced bar guide plate at the lower end of the leading mold B while holding the reinforcing bar G in a predetermined position, the reinforcing bar G can smoothly enter the leading mold B as the vehicle V advances. I am doing so.

  As the mold A moves, the ready-mixed concrete is compacted in the hopper portion C and the molding mold D, and when the molding mold D exits, the reinforced concrete structure S is finished. In many cases, a vibration device is provided in the hopper portion C in order to promote compaction of the ready-mixed concrete.

  In addition to the case where the reinforced concrete structure is continuously constructed as described above, other structures may be interposed in the middle of the structure. For example, in the case of a waterway, discontinuous reinforced concrete structures will be constructed at the location where the water catchment is installed or where the waterway intersects or branches. Since the end of the structure that becomes the discontinuous part will fix the plate-shaped end formwork to the reinforcing bar to prevent the outflow of ready-mixed concrete, it is necessary to introduce the end formwork again, Continuous concrete could not be placed without human assistance.

  Therefore, the end formwork that is the end of the previous structure and the end formwork that is the leading end of the next structure have a small shape into which the mold A can be removed and can be inserted. If the end mold is formed with an inner mold that forms the inner wall of the lead mold B, for example, an opening that can enter the mold such as a cylindrical mold, the end of the discontinuous portion at a predetermined interval The formwork can be passed in a state where it can be easily removed, and the next structure can be continuously constructed.

  For example, in the case where the non-construction part to be the above-described water collecting basin or other water channel part is left as a space part of a predetermined width, in order to pass the lead mold B without stopping the movement, It is necessary to smoothly enter the inner formwork forming the inner side into the opening formed in the end formwork. However, since the inner formwork is formed to be approximately the same size as the opening, it is not possible to automatically enter the reinforcing bar G arranged on the roadbed or the roadbed F to a predetermined height. It was difficult.

  Therefore, the rebar is lifted or moved to the left and right to guide the inner formwork to the opening, but the rebar is assembled in a bowl shape and has a weight, and several people are involved in the moving work including the lifting. In the case of a large structure including the enlargement of the waterway, it may not be possible by human power alone, and it was a large-scale construction work including the use of heavy machinery. . At the same time, since the work is performed while moving the vehicle, there is a risk of being caught in the vehicle.

Japanese Patent Laid-Open No. 9-203209

  The present invention solves the above-described drawbacks, and after constructing the preceding structure, to form a space with a predetermined portion as a non-placed portion of ready-mixed concrete, and thereafter to construct a similar structure continuously In addition, an automatic lifting device is provided that enables the continuous construction of the following structure by automatically lifting or moving the end formwork of the next structure to a predetermined position using the opening. A machine construction method and apparatus for a concrete structure are provided.

  The present invention moves a mold composed of a leading mold, a hopper, and a molding mold along a path on which the reinforced concrete structure is constructed, and sequentially arranges the reinforcing bars arranged along the movement path in the leading mold. In the method of automatically introducing a reinforced concrete structure with a molding mold by supplying fresh concrete from the hopper, the outer side of the lead mold is in contact with the outer shape of the reinforcing bar. The inner mold forms a lifting device whose upper end is inclined downward from the end edge thereof, and the end mold is fixed to the end of the reinforcing bar as the mold moves. The reinforced concrete structure should not be allowed to continue to move by introducing it into the inner formwork by introducing it into the opening of the mold and further moving the mold. Wherein the mechanical method of constructing et continuously constructed to concrete structures.

  Also, the mold composed of the lead mold, the hopper part and the molding mold is moved along the path where the reinforced concrete structure is constructed, and the reinforcing bars roughly arranged along the movement path are sequentially introduced into the lead mold. In an apparatus for automatically constructing a reinforced concrete structure with a molding mold by supplying fresh concrete from the hopper, the outer side of the leading mold is in contact with the outer shape of the reinforcing bar. The frame is characterized by a concrete construction machine construction device formed by projecting a lifting device whose upper end tip is inclined downward from its edge.

  Furthermore, the lifting device is characterized by a machine construction device for a concrete structure in which the upper side is a linear member that gradually and gradually inclines downward.

  Moreover, the said lifting apparatus is characterized by the machine construction apparatus of the concrete structure made into the curved member in which the upper side inclined in the downward side.

  Furthermore, the linear or curved member is characterized by a machine construction apparatus for a concrete structure in which an appropriate number of rod-shaped inclined members are used.

  Further, the linear or curved member is characterized by a machine construction apparatus for a concrete structure which is a plate-like inclined member.

  Furthermore, the linear or curved member is characterized by a concrete construction machine construction apparatus which is a cylindrical member whose upper side is inclined downward.

  Further, the linear or curved member is characterized by a concrete construction machine construction device which is an inclined member with its tip end bulged.

  According to the concrete construction machine construction method and apparatus of the present invention, there is no need to install anchoring means such as anchor bars for fixing the reinforcing bars to the ground side, and the work for fixing the anchor bars and the reinforcing bars as in the prior art. Is unnecessary, and construction can be performed simply by placing reinforcing bars at rough positions. As a result, the construction period can be shortened and the cost can be reduced. In addition, the reinforced concrete structure can be constructed directly on the ground, and the construction of the base concrete can be omitted if necessary. Therefore, also in this aspect, the construction period can be shortened, and the cost can be reduced.

  In addition, the end mold of the following reinforced concrete structure is passed after the apparatus of the present invention passes through the end formwork which is the terminal part of the preceding reinforced concrete structure and continuously passes through the predetermined space. By introducing a lifting device provided at the tip of the leading mold to the opening of the frame, the entire mold can be operated continuously, and even if it has a predetermined space, it passes through the end formwork and is ready-mixed continuously. It was possible to perform the installation work.

  Since the lifting device has a projecting structure in which the upper side is inclined downward from the leading end of the leading mold, it is smoothly moved to the opening of the end formwork of the reinforced concrete structure to be constructed next by the forward movement. It can be automatically introduced in a state, and it is possible to omit the work of lifting the reinforcing bar by human power and the operation of inserting the leading mold into the opening.

The perspective view of the whole machine construction apparatus of the concrete structure of this invention. The perspective view of the edge part of the machine construction apparatus of the concrete structure of this invention, and the edge part of a concrete structure. Sectional drawing which shows the movement state of a lifting apparatus. Sectional drawing which shows the state which the lifting apparatus moved forward. Sectional drawing which shows the state which the lifting apparatus further moved forward. (A), (b) The perspective view of the other Example of the lifting apparatus. The perspective view of the prior art example of the machine construction apparatus of a concrete structure. The perspective view of the prior art example which shows the arrangement | positioning state of a reinforcing bar.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the examples.

  FIG. 1 is a perspective view of a concrete construction machine construction apparatus 1 and an end of a concrete structure according to the present invention. The machine construction apparatus 1 has a mold 2 fixed to a side portion of a vehicle. The mold 2 includes a leading mold 3, a hopper portion 4, and a molding mold 5, and ready-mixed concrete is supplied to the hopper portion 4 from a belt conveyor 6.

  The leading mold 3 is formed with an outer mold 7 and an inner mold 8, and a rebar or an assembled rebar (hereinafter simply referred to as a rebar) 9 is lifted from the left and right lower ends of the front end of the outer mold 7. A guide plate 10 inclined toward the outside is provided, and when the reinforcing bar 9 is introduced into the leading mold 3, the reinforcing bar 9 is lifted with a certain size, and a roadbed or a roadbed on which the reinforcing bar 9 is placed, etc. A gap is formed between the base surface 11 and the reinforcing bar 9 so that the concrete is spread, and at the same time, it serves as a guide.

  The reinforcing bars 9 are not roughly fixed to the base surface 11 such as the roadbed or the roadbed, but are roughly arranged at predetermined locations on the base surface 11 such as the roadbed or the roadbed. Further, the inner dimension of the outer mold 7 of the lead mold 3 is approximately the same as the size of the reinforcing bar 9 and is in contact with the inner wall surface of the outer mold 7 of the lead mold 3. It will be guided to the hopper part 4 side. Similarly, the inner mold 8 is a mold having a size for constructing an inner wall for forming the inner space of the reinforced concrete structure. In this embodiment, the inner mold 8 is a cylindrical shape for forming a water channel having a circular cross section. The rebar 9 is introduced between the outer mold 7 and the inner mold 8.

  Since the ready concrete is continuously supplied to the hopper part 4 via the belt conveyor 6, the ready concrete is supplied to the reinforcing bars 9 introduced to the lower part of the hopper part 4. Become.

  Since the size of the inner wall surface of the outer mold 12 of the hopper portion 4 and the molding mold 5 is formed larger than the size of the inner wall surface of the leading mold 3, a concrete cover thick layer of a predetermined thickness on the reinforcing bar 9. As a result, the reinforcing bars are not exposed on the surface of the shaped reinforced concrete structure. With the movement of the mold 2, the ready-mixed concrete is compacted in the hopper 4 and the molding mold 5, and at the stage of exiting the molding mold 5, the reinforced concrete structure is finished and molded.

  The said structure WHEREIN: It is good also as a structure which provides a vibration apparatus in the hopper part 4 in order to accelerate | stimulate compaction of fresh concrete.

  In the case of the normal continuously formed reinforcing bars 9, as described above, the reinforcing bars 9 are introduced into the leading mold 3 without being swung up and down and left and right while being scooped up by the guide plate 10, and the reinforced concrete structure is continuously operated. Although a structure can be constructed, as shown in FIG. 1, when there is a predetermined interval W between the reinforced concrete structure and the reinforcing bar 9 without placing the ready-mixed concrete, After passing through the end formwork 13 of the reinforced concrete structure, an end formwork 14 exists at the end of the reinforcing bar 9 of the next reinforced concrete structure to be continuously placed, It was difficult to carry out the continuous construction of the part mold 14 without human assistance.

  For example, assuming a case of a reinforced concrete structure such as a gutter, the construction of the gutter once ends at the location where the water catchment is installed or where it crosses or branches with another gutter, After securing the predetermined interval W to form the space, the next side groove is constructed. Accordingly, the end portion mold made of a material such as an iron plate that can be obtained in a state where the surface side becomes a smooth surface for installation or construction of other members such as a formwork and a water collecting basin on the end portion side of the reinforcing bar 9. A frame 13 is formed.

  In addition, the next side groove is constructed with a predetermined interval W, and the reinforcing bar 9 is also formed on the end portion side of the side groove to prevent the ready-mixed concrete from flowing out as described above. A fixed end form 14 is formed.

  Since the drainage basin or other side groove installed or constructed at the place where the predetermined interval W is formed and the side groove constructed by the apparatus of the present embodiment need to be continuous with the water channel, the both end formwork 13 , 14 need to be provided with openings 15 and 16 for forming a water channel at the center thereof.

  Each of the end molds 13 and 14 is provided with openings 15 and 16 at the center thereof, and notches 17 and 18 serving as water inlets are formed at the upper ends thereof. Flat-shaped peripheral portions 19 and 20 for preventing the concrete from flowing out are formed.

  In order to continuously construct the next reinforced concrete structure as in the construction of the above-mentioned side groove, a predetermined interval W as a space portion is passed in a state without a structural reinforcing bar and becomes an end portion of the next reinforcing bar 9. The end mold 14 needs to pass through at a predetermined height, and for this purpose, the opening 16 of the end mold 14 needs to be fitted into the outer peripheral surface of the inner mold 8 of the leading mold 3.

  In order to enable the above-mentioned continuous transition, the inner mold 8 is fitted into the opening, but the rebar 9 is only placed on a base surface 11 such as a roadbed or a roadbed. It is necessary to raise the heavy reinforcing bar 9.

  As a means for raising the reinforcing bar 9 to enable continuous transfer of the mold 2, a separator 21 is interposed between the end molds 13 and 14 that maintain a predetermined interval W so that the end of the mold does not hinder the transfer of the mold. At the corner of each of the molds 13 and 14, it serves as a guide for the entire mold 2, and at the same time, a lifting device 22 is formed on the upper end of the inner mold 8 so as to protrude outwardly. It is a means for guiding to 16.

  As a result, when the concrete construction machine construction apparatus 1 moves to a position close to the end formwork 14 after passing the predetermined interval W, the lifting device 22 opens the opening 16 of the end formwork 14. It will be inserted from the tip.

  As shown in FIGS. 1 and 2, the lifting device 22 projects outward from the end of the inner mold 8, and the outer shape of the lifting device 22 is such that the upper side is gradually inclined downward. Accordingly, as shown in FIGS. 3A to 3C, the lifting device 22 that has passed through the end formwork 13 further advances and reaches the end of the reinforcing bar 9 that is disposed with a predetermined interval W. The tip 22a enters while touching the upper edge 16a of the opening 16 of the fixed end formwork 14, and as the machine construction device 1 of the reinforced concrete structure further advances, The end formwork 14 is raised along the side inclined portion 22b. Thereby, the reinforcing bar 9 to which the end formwork 14 is fixed is also lifted upward.

  By further advancement of the machined construction device 1 for the reinforced concrete structure, the reinforcing bar 9 is lifted up to the construction position of the reinforced concrete structure formed by the ready-mixed concrete while being adjusted in the left-right direction. The inner mold 8 of the mold 3 enters the opening 16.

  As shown in FIGS. 1 to 3, the lifting device 22 is an arcuate plate-like body projecting so as to gradually descend upward from the end of the inner mold 8 of the leading mold 3. The plate-like body on the base end side of the inner mold 8 is an arc surface having the same shape as the outer peripheral edge of the upper end of the inner mold 8, and is gradually inclined downward toward the tip. Yes.

  Moreover, as shown in FIG. 1, it can be made easy to enter the opening part 16 by squeezing the tip part 22a. The descending width due to the inclination from the base end portion to the tip end portion is formed so as to correspond to the height at which the reinforcing bar 9 is lifted, so that the reinforcing bar 9 is smoothly raised to a predetermined position and the left and right positions are adjusted. It becomes possible to lead to the construction position of the reinforced concrete.

  As described above, the guide plate 10 is for raising the reinforcing bar 9 from the lower side when continuously placing the ready-mixed concrete on the reinforcing bar 9, and when passing through the end formwork 14. The size of the end mold 14 is formed so as not to contact the lower end of the end mold 14.

  FIG. 4 shows another embodiment of the lifting device 22. It consists of an appropriate number of curved rod-like bodies that protrude from the end of the inner mold 8 of the leading mold 3 in a state of gradually descending outward from the upper side. Similarly to the above, the entry into the opening 16 can be made smooth by squeezing the tip. The downward width of the bar-like body is formed so as to correspond to the height at which the reinforcing bar is lifted, as described above.

  The lifting device 22 is formed by a plate-like body or a rod-like body, but may be any device that enters the opening 16 of the end mold 14 and leads to the inner mold 8 of the leading mold 3. Although the shape of the inclination differs depending on the shape of the portion 16, the shape is not limited to the shape of the above embodiment as long as it can contact and lift the upper edge 16 a of the opening 16. For example, the shape of the inclined portion 22b may be an appropriate shape such as a linear inclination or a curved inclination, and if the shape of the upper edge of the opening is a linear shape, the shape of the lifting device 22 is also above that The side will be of a suitable shape.

  Further, the shape of the distal end portion 22a can be selected as appropriate, such as a shape in which the distal end is bulged, a tapered shape, a spherical shape or an oval shape, and may be any shape that smoothly leads to the inner mold 8.

  In addition, the assembled rebars are lifted or the left and right sides are adjusted, but a considerable load is applied to the lifting device 22 serving as the protruding portion, so that the thickness or thickness of the member is sufficient for them. Select one that can withstand. If necessary, it is also considered that a reinforcing member is appropriately attached inside the plate-like body or rod-like body to obtain sufficient strength.

  In the above embodiment, the lifting device protrudes outward from the upper end of the inner mold 8. However, the lifting device 22 may have a cylindrical shape for reinforcement of the lifting device 22 and may have an inclined upper side. .

  Since the upper end edge 16a of the opening 16 and the upper surface of the lifting device 22 are movable in sliding contact with each other, smooth movement can be achieved by applying means for reducing wear or an oily material such as glycerin. It can be an effective means.

  In addition, since the lifting device 22 is accommodated in the size of the openings 15 and 16, there is no hindrance to the continuous construction of a normal reinforced concrete structure having no discontinuous parts, and it is not changed during the continuous construction. Can be used.

DESCRIPTION OF SYMBOLS 1 Machine construction apparatus of concrete structure 2 Mold 3 Leading mold 4 Hopper part 5 Molding mold 6 Belt conveyor 7 Outer formwork 8 Inner formwork 9 Reinforcement 10 Guide board 11 Base surface 12 Outer formwork 13, 14 End formwork 15 , 16 Opening portion 16a Upper edge portions 17, 18 Notch portions 19, 20 Peripheral portion 21 Separator 22 Lifting device 22a Tip portion 22b Inclined portion

Claims (8)

  Move the mold composed of the lead mold, the hopper part and the molding mold along the path where the reinforced concrete structure is constructed, and sequentially introduce the reinforcing bars roughly arranged along the movement path into the lead mold, In the method of automatically constructing a reinforced concrete structure with a molding mold by supplying ready concrete from a hopper, the leading mold has a shape in contact with the outer shape of the reinforcing bar on the outer side, A lifting device whose upper end is inclined downward is projected from the edge, and the tip of the lifting device is moved to the opening of the end mold frame fixed to the end of the reinforcing bar as the mold moves. Introducing the rebar into the inner formwork by further moving the mold and continuously moving the reinforced concrete structure while moving the mold Machine construction method of the concrete structure, characterized in that to build.   Move the mold composed of the lead mold, the hopper part and the molding mold along the path where the reinforced concrete structure is constructed, and sequentially introduce the reinforcing bars roughly arranged along the movement path into the lead mold, In an apparatus for automatically constructing a reinforced concrete structure with a molding mold by supplying raw concrete from a hopper, the outer side of the lead mold is in contact with the outer shape of the reinforcing bar. A concrete construction machine construction device characterized in that a lifting device in which an upper end tip is inclined downward is projected from an end edge portion.   3. The machine construction apparatus for a concrete structure according to claim 2, wherein the lifting device is a linear member whose upper side is gradually inclined downward.   3. The concrete construction machine construction device according to claim 2, wherein the lifting device is a curved member whose upper side is inclined downward.   5. The machine construction apparatus for a concrete structure according to claim 2, wherein the linear or curved member is an appropriate number of rod-shaped inclined members.   The machine construction apparatus for a concrete structure according to any one of claims 2 to 4, wherein the linear or curved member is a plate-like inclined member.   The machine construction apparatus for a concrete structure according to any one of claims 2 to 6, wherein the linear or curved member is a cylindrical member whose upper side is inclined downward.   The machine construction apparatus for a concrete structure according to any one of claims 2 to 7, wherein the linear member or the curved member is an inclined member whose top end is bulged.

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