JP3947459B2 - Method for constructing concrete structure, formwork block used in the method, and method for manufacturing the formwork block - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing a concrete structure capable of labor-saving and quickly constructing a concrete structure such as a sabo dam, a form block used in the method, and a method for manufacturing the form block. .
[0002]
[Prior art]
As is well known, when constructing concrete structures such as sabo dams, first form a scaffold with a scaffold, place concrete into this formwork, and then dismantle the formwork As the labor shortage has become more serious, this formwork has required a lot of labor.
[0003]
Sabo dams are mostly built on steep slopes between mountains, and workers engaged in the construction of sabo dams are always exposed to dangers such as falling rocks and landslides. From the point of view, it was requested to speed up on-site construction.
[0004]
Therefore, the applicant of the present application once invented a form block to be used in the same manner as a method for constructing a concrete structure to be constructed on a sand barrier dam or the like (see, for example, Patent Document 1). In the present invention, L-shaped formwork blocks are arranged side by side horizontally in parallel to form a block row, and concrete is cast using this block row as a formwork.
[0005]
However, the crane operation in the installation work for forming the row of blocks requires skill and skill, and the formwork block used in this method is L-shaped and has directionality, so it becomes a suspended load. Since the formwork block is easy to rotate, it was very difficult to accurately place the formwork blocks adjacent to each other, and there was a complaint that it would take construction time.
[0006]
[Patent Document 1]
JP 2001-131944 A (page 3, FIG. 1)
[0007]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a method for constructing a concrete structure that can be labor-saving and quickly applied. There is.
[0008]
In addition, another technical problem of the present invention is that the concrete structure can perform the function of the formwork by reliably adjoining the formwork block even if the installation accuracy is low, and can produce the necessary number on site. An object of the present invention is to provide a formwork block used in a method for constructing an object.
[0009]
Furthermore, the other technical subject of this invention is providing the manufacturing method of the said mold block which can be produced in large quantities.
[0010]
[Means for Solving the Problems]
Means employed by the present inventor for solving the above-described problems will be described with reference to the accompanying drawings.
[0011]
That is, in the present invention, a vertical hole 11 penetrating up and down is formed in the core portion of the main body, and a suspension handle 12 is formed in the upper portion of the vertical hole 11,
On the diagonal of the outer peripheral surface of the main body, a concrete cylindrical form block made up of a pair of elastic fins 13 and 13 formed in the shape of a long plate and attached in the axial direction is adjacent to the mold. While creating the partition part while overlapping the elastic fins 13 and 13 of the frame blocks 1 and 1 with each other, the block boundary A is formed by horizontally arranging them to define the construction boundary T,
The entire block row A thus formed is used as a mold, and a concrete C is formed in the defined construction boundary T to form a main body concrete layer B. Further, a plurality of other molds are formed on the main body concrete layer B. A technique of constructing a concrete structure by sequentially repeating frame blocks 1 horizontally arranged to form the next block row A and placing concrete C in a construction boundary T defined by the form block 1 The construction method of the concrete structure was completed by adopting special means.
[0012]
Further, in order to solve the above-mentioned problems, the present invention fills concrete C into a vertical hole 11 formed in the center of the core part of the mold block 1 and loads and fixes it in addition to the above means as necessary. The technical means was adopted.
[0013]
Furthermore, in order to solve the above-mentioned problems, the present invention installs a positioning installation guide plate G that demarcates the construction boundary T in addition to the above means as necessary, and molds along the installation guide plate G. The technical means of arranging the frame blocks 1... In parallel so that the next-stage mold block 1 can be placed in an orderly manner was adopted.
[0014]
Furthermore, in order to solve the above-described problems, the present invention provides a leakage prevention plate S on the block row A formed by laying the formwork blocks 1 on the main body concrete layer B in addition to the above means as necessary. The technical means of allowing the mold block 1 to be placed substantially horizontally in the next stage by preventing leakage of the concrete to be placed in the next stage was adopted.
[0015]
Furthermore, in order to solve the above-described problems, the present invention includes a U-shaped block in a part of the block row A that defines the construction boundary T in addition to the above means as necessary. The technical means of filling the groove of the letter block with concrete was adopted.
[0016]
Also, the present invention is a concrete cylindrical block body that is horizontally parallel to each other and is itself a mold,
A vertical hole 11 penetrating vertically is established in the core part of the main body, and a suspension handle 12 is formed in the upper part of the vertical hole 11,
The form block was completed by adopting technical means in which a pair of elastic fins 13 and 13 formed by forming an elastic material into a long plate shape are attached to the diagonal of the outer peripheral surface of the main body in the axial direction.
[0017]
Further, in order to solve the above problems, the present invention employs technical means in which the suspension handle 12 is formed by embedding a reinforcing bar in the vertical hole 11 in addition to the above means as necessary.
[0018]
Furthermore, in order to solve the above-described problems, the present invention employs technical means in which the base end portions of the elastic fins 13 and 13 are embedded and fixed in the main body in addition to the above means as necessary.
[0019]
Furthermore, the present invention sandwiches and matches the elastic fins 13 and 13 made of an elastic material between the half-divided cylindrical outer circular molds 21 and 21, respectively. The block mold 2 is configured by inserting a rod-like member in the vicinity of the end of the core mold 22 and arranging it inside the outer circular mold 21.
The block mold 2 is filled with concrete C to harden the concrete, and then the outer circular mold 21 and the core mold 22 are removed to form a cylindrical shape. The manufacturing method of the form block was completed by adopting the technical means of fixing 12 and elastic fins 13 and 13 together.
[0020]
Further, in order to solve the above problems, the present invention forms the core part mold 22 of the block mold 2 in a vertically divided manner in addition to the above means as necessary, and the divided molds 22a and 22b are respectively formed. The technical means of facilitating demolding by forming a taper from the joint surface to the end was adopted.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
[0022]
(I) Formwork block First, the formwork block of this embodiment is demonstrated, referring FIG.
[0023]
The formwork blocks of the present embodiment are concrete cylindrical block bodies that are horizontally parallel to each other and become the formwork itself, and a vertical hole 11 is formed in the core of the main body so as to penetrate vertically. The vertical hole 11 can be filled with concrete C, and a suspension handle 12 is formed at the top.
[0024]
In addition, a pair of elastic fins 13 and 13 formed by forming an elastic material (in this embodiment, bituminous fibrous material) into a long plate shape are attached to the diagonal of the outer peripheral surface of the main body in the axial direction, and are configured in a fin shape. ing.
[0025]
In the present embodiment, the suspension handle 12 is formed by embedding a reinforcing bar in the vertical hole 11, and the base end portions of the elastic fins 13 and 13 are embedded and fixed in the main body.
[0026]
(Ii) Constructing method of concrete structure Next, a constructing method of a concrete structure (sabo dam) using the above-described formwork block of the present embodiment will be described with reference to FIGS.
[0027]
First, a crane is used to suspend and convey the ground on a substantially leveled ground, and a partition portion is created while the elastic fins 13 and 13 of adjacent formwork blocks 1 and 1 are overlapped with each other. However, the block boundary A is formed by paralleling horizontally to define the construction boundary T (see FIG. 2). At this time, by installing a positioning installation guide plate G, the formwork blocks 1, 1... Are arranged side by side along the installation guide plate G so that the next formwork block 1 can be placed in an orderly manner. (See FIG. 3).
[0028]
Next, a concrete body layer B is formed by placing concrete C in the defined construction boundary T using the entire block row A thus formed as a mold (see FIG. 4). At this time, if necessary, in order to stabilize the block row A of the mold block 1, the vertical hole 11 formed in the center of the core portion of the mold block 1 can be filled with concrete and loaded and fixed. . Further, on the main body concrete layer B, a leakage prevention plate S is installed on the block row A formed by laying the formwork block 1 to prevent leakage of concrete to be placed in the next stage. The formwork block 1 can be placed substantially horizontally on the stage.
[0029]
Further, a plurality of other formwork blocks 1 are horizontally arranged on the main body concrete layer B to form the next block row A (see FIG. 5), and the concrete is put into the vertical holes 11 of each formwork block 1. A concrete structure (a sabo dam) can be constructed by sequentially repeating filling and fixing C, and placing concrete C in the construction boundary T defined by the mold block 1 (see FIG. 6). .
[0030]
Further, a part of the block row A that defines the construction boundary T includes a U-shaped block, and the groove portion of the U-shaped block can be filled with concrete. The concrete surrounded by the formwork block 1 It is effective as a temporary partition when the amount of concrete placed exceeds the volume that can be constructed in one day within the placement range.
[0031]
Thus, in this embodiment, since the formwork block 1 integrated with the concrete structure is used, the formwork panel is set up with the scaffolding as in the past, and the formwork disassembly work is performed after the concrete is hardened. There is no need to do this, and a concrete structure such as a sabo dam can be constructed very labor-saving.
[0032]
In addition, the placed concrete is compacted according to the usual method, but if a high-frequency vibrator that can be suspended and transported is used, the equipment can be suspended by a crane without actually entering the construction site. The concrete can be compacted remotely. Furthermore, it is also possible to suspend the water-containing sheet and arrange the water-dispersing machine to remove the latency generated on the surface of the placed concrete, or for the curing work to give moisture to protect the surface. Therefore, even in places where it is difficult to secure evacuation time when falling rocks or landslides, it can be safely and unattended.
[0033]
(Iii) Manufacturing Method of Formwork Block Next, a manufacturing method of the formwork block of the present embodiment will be described with reference to FIGS.
[0034]
First, as shown in FIG. 7 and FIG. 8, elastic fins 13 and 13 made of an elastic material are sandwiched between the half-divided cylindrical outer circular molds 21 and 21, respectively, and the core portion is matched. The block form 2 is configured by placing the form 22 inside the external circular form 21 and inserting a rod-like member near the end of the core form 22.
[0035]
The block mold 2 is filled with concrete C, and after the concrete is hardened, the outer circular mold 21 and the core mold 22 are removed to form a cylinder, and The suspension handle 12 and the elastic fins 13 and 13 are fixed together (see FIG. 9).
[0036]
In the present embodiment, the core mold 22 of the block mold 2 is formed into a vertically divided type, and the divided molds 22a and 22b are each formed in a tapered shape from the joint surface to the end so that demolding can be easily performed. In addition, the formed formwork block is not easily damaged. Further, these divided molds 22a and 22b can be fastened by fastening tools 23.
[0037]
A block can be produced in a large amount only by using the mold thus simply configured, and moreover, it can be produced in the field, so that the transportation cost can be suppressed.
[0038]
The present invention is generally configured as described above. However, the present invention is not limited to the illustrated embodiment, and various modifications can be made within the description of “Claims”. The material used for the suspension handle 12 of the mold block 1 is inexpensive, but can be changed to a hard material such as FRP or engineering plastic.
[0039]
In addition, the material used for the elastic fin 13 is not limited to a bituminous fibrous material as long as it is an elastic material, and a foam such as a synthetic rubber or a soft resin rich in weather resistance can be used. Are also within the technical scope of the present invention.
[0040]
【The invention's effect】
As described above with the embodiment, in the present invention, in constructing the concrete structure, the form block integrated with the concrete structure is used, and the form block is configured in a circular shape, and Since the elastic fin is attached to the outer periphery, the partition portion is reliably formed even if the installation accuracy is low, and the mold function is achieved. Therefore, the burden of the installation work can be reduced.
[0041]
In addition, since it is not necessary to install a formwork panel with a scaffold as in the prior art and perform a formwork dismantling work after concrete is hardened, a concrete structure such as a sabo dam can be constructed labor-saving and quickly.
[0042]
Furthermore, if necessary, a sabo dam at a dangerous place where sufficient evacuation time cannot be secured by performing compaction work with a high-frequency vibrator that can be suspended and transported, removal of latency, and curing work with water-containing sheets. In addition, since it is possible to perform unmanned construction by remote control using a crane or the like, it is extremely safe and production efficiency can be improved, so the utility value in the industry is very high.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a formwork block according to an embodiment of the present invention.
FIG. 2 is a top view showing a block row by a formwork block according to the embodiment of the present invention.
FIG. 3 is a process diagram illustrating a method for constructing a concrete structure according to an embodiment of the present invention.
FIG. 4 is a process diagram illustrating a method for constructing a concrete structure according to an embodiment of the present invention.
FIG. 5 is a process diagram illustrating a method for constructing a concrete structure according to an embodiment of the present invention.
FIG. 6 is a process diagram illustrating a method for constructing a concrete structure according to an embodiment of the present invention.
FIG. 7 is an exploded perspective view showing a block mold for producing a mold block according to an embodiment of the present invention.
FIG. 8 is an exploded top view showing a block mold for producing a mold block according to an embodiment of the present invention.
FIG. 9 is an explanatory side view showing a block mold for producing a mold block according to an embodiment of the present invention.
[Explanation of symbols]
1 Formwork block
11 Vertical hole
12 Hanging handle
12a rebar
13 Elastic fin 2 Block formwork
21 External circular formwork
22 Core formwork
22a, 22b Split formwork
23 Fastener A Block row T Construction boundary C Concrete B Main body concrete layer G Installation guide plate S Leakage prevention plate

Claims (10)

A vertical hole 11 penetrating vertically is established in the core part of the main body, and a suspension handle 12 is formed in the upper part of the vertical hole 11,
On the diagonal of the outer peripheral surface of the main body, a single cylindrical concrete form block made of concrete, which is composed of a pair of elastic fins 13 and 13 formed in the shape of a long plate in the axial direction, is adjacent to the mold. While creating the partition part while overlapping the elastic fins 13 and 13 of the frame block 1 and 1 with each other, the block boundary A is formed by horizontally arranging them to define the construction boundary T,
The entire block row A thus formed is used as a mold, and a concrete C layer is formed by placing concrete C in the defined construction boundary T. Further, a plurality of other molds are formed on the concrete concrete layer B. Forming a concrete structure by sequentially repeating the formation of the next block row A by horizontally framing the frame blocks 1 and placing concrete C in the construction boundary T defined by the form block 1 A method for constructing a concrete structure. 2. The method for constructing a concrete structure according to claim 1, wherein concrete C is filled into a vertical hole 11 formed in the center of the core portion of the mold block 1 and is fixed by weighting. A positioning installation guide plate G that demarcates the construction boundary T is installed, and the formwork blocks 1, 1... The method for constructing a concrete structure according to claim 1 or 2, wherein On the main body concrete layer B, a leakage prevention plate S is installed on the block row A formed by laying the formwork block 1, and the next stage is prevented by preventing leakage of concrete to be placed in the next stage. The method for constructing a concrete structure according to any one of claims 1 to 3, wherein the formwork block 1 can be placed substantially horizontally. A part of the block row A that defines the construction boundary T includes a U-shaped block, and the groove portion of the U-shaped block is filled with concrete. The construction method of the concrete structure as described in one. It is a cylindrical block made of concrete that is parallel to each other and is itself a formwork,
A vertical hole 11 penetrating vertically is established in the core part of the main body, and a suspension handle 12 is formed in the upper part of the vertical hole 11,
A mold block characterized in that a pair of elastic fins 13 and 13 formed by forming an elastic material into a long plate shape are attached to the diagonal of the outer peripheral surface of the main body in the axial direction. The formwork block according to claim 6, wherein the suspension handle (12) is formed by embedding a reinforcing bar in the vertical hole (11). The formwork block according to claim 6 or 7, wherein base ends of the elastic fins 13 and 13 are embedded and fixed in the main body. The elastic fins 13 and 13 made of an elastic material are sandwiched and matched between the half-divided cylindrical outer circular molds 21 and 21, respectively, and the core mold 22 is attached to the outer circular mold 21. It is arranged inside, and a block member 2 is constructed by inserting a rod-like member in the vicinity of the end of the core mold 22,
The block mold 2 is filled with concrete C to harden the concrete, and then the outer circular mold 21 and the core mold 22 are removed to form a cylindrical shape. 12. A method for manufacturing a mold block, wherein 12 and elastic fins 13 and 13 are fixed together. The core mold 22 of the block mold 2 is formed in a vertically divided manner, and the divided molds 22a and 22b are each formed in a tapered shape from the joint surface to the end to facilitate demolding. A method for manufacturing a formwork block according to claim 9.

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