KR101860512B1 - Method for reinforcing cross section installation of ground and underwater structure using integral mold module - Google Patents

Abstract

The present invention relates to a method for reinforcing a cross section installation of structure. In particular, an integral mold module manufactured by fixedly installing a vertical steel bar and a mold plate in a linear member fixed by pre-stressing the outer side of a ground and underground structure in a transverse direction is manufactured. By using the linear member at the outer side of an upper portion of the ground and underground structure, the integral mold module is lowered to the cross section installation part while the mold plate is temporarily assembled, the linear member is pre-stressed to be fixed to the structure, and then concrete for reinforcing a cross section at the inside of the mold plate is placed, thereby reducing operation time (especially underwater operation).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for reinforcing a section of a ground and underwater structure using an integrated mold module,

More particularly, the present invention relates to an integral molding module manufactured by fixing a vertical reinforcing bar and a formwork to a linear member fixed while being horizontally prestressed on the outside of the underground and underwater structures. The integrally molded form module is lowered to the section reinforced reinforced portion in a state where the formwork is assembled by using a linear member at the upper side of the underground and underwater structure, then the preformed portion is fixed to the structure by prestressing the linear member, The present invention relates to a method for reinforcing a section of a ground and underwater structure by using an integrated die module that reduces the working time (especially underwater operation) by placing concrete for reinforcing a section.

Generally, bridge and underwater structures such as piers, breakwaters, and dams under the bridge are mainly installed with reinforced concrete. Specifically, ground and underwater structures have various types of structural members such as rectangular, circular, elliptical pillars, slabs, and walls. Particularly, the column plays an important role in maintaining the safety of various marine structures such as bridges and pier bridges, because it plays a most important role in structural members of underwater structures.

Concrete is composed of cement, coarse aggregate, fine aggregate, and admixture. Unlike other construction materials (rebar), the composition of the material is diverse, and different physical properties are combined. The quality of such concrete is closely related to the quality of the constituent materials and depends on the mixing ratio, casting method and curing method. For this reason, good quality concrete has been used for construction and civil engineering for a long time because it is economical and semi-permanent.

However, underwater structures such as bridge piers, breakwaters and dams under the bridge made of reinforced concrete are frequently damaged by the scouring phenomenon due to the impact of suspension, the freezing phenomenon at the area where the water is contacted, and corrosion due to water pollution In addition, when low-quality concrete is used, there is a disadvantage that the structure is rapidly broken when the structure is exposed to the external environment. Therefore, maintenance and reinforcement work should be periodically performed to ensure the stability of the structure.

In recent years, as the shape and shape of concrete structures have diversified and become more complicated, there are cases where a load greater than the original design load is applied, and thus the strength of the concrete structure often needs to be improved. In the case of structures, as the size of the vehicle becomes larger, a structure capable of withstanding the heavy vehicle is required, so that there is a need to improve the performance.

In order to solve the above-mentioned problems, there are methods using steel plate form or FRP panel, which are widely used for sectional enlargement and reinforcement.

These methods can be installed in various shapes according to the shape of the structure, such as installing the formwork in the damaged area or the whole area, and injecting the grout to repair and reinforce it. Slabs and walls are usually repaired by installing molds in the damaged area and repairing them in the form of pouring underwater grout materials to the damaged areas. There are various types of formwork materials available. Recently, typical formwork is made of iron plate or FRP panel.

In the case of using the steel plate or FRP formwork, anchor bolts or stud bolts are buried in order to fix it to the structure, and then the formwork is fixed, so that it takes a lot of time to individually install the structure on the structure.

Also, it is difficult to satisfy the seismic performance because it is reinforced by simply using concrete and steel bars.

Korean Patent No. 10-0480867 Korean Patent Publication No. 10-2002-0024233 Korean Patent No. 10-0350721 Korean Patent No. 10-0384942 Korean Patent No. 10-1408679

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a monolithic mold module manufactured by fixing a vertical reinforcing bar and a formwork plate to a linear member fixed while being horizontally prestressed, In the state where the formwork is assembled by using the linear member at the upper part of the underground and underwater structure, the integral formwork module is lowered to the section extension reinforcement portion, then the linear member is prestressed and fixed to the structure, And an object of the present invention is to provide a method of reinforcing a section of a ground and an underwater structure by using an all-in-one form module for shortening a working time (in particular, underwater operation).

It is another object of the present invention to provide a method of reinforcing a section of a ground and an underwater structure by using an integrated die module for enhancing the seismic performance by allowing the linear member to perform prestressing on the ground and underwater structures.

According to an aspect of the present invention,

A plurality of linear members coupled horizontally to an outer surface of the structure and prestressing the inner surface of the formwork plate formed in a shape corresponding to a half section of the structure, A mold module manufacturing step of assembling an integral type mold module by connecting at least one step with the vertical reinforcing bars and connecting the vertical reinforcing bars to each of the linear members using bundling wires; A mold assembling step of lifting a pair of the integrally molded mold modules using the lifting equipment and then assembling the linear members outside the structure to assemble the integrated mold modules; A die fixing step of lowering the integrally molded die module assembled into an end face extension reinforcing portion of the structure, and then applying prestressing while fixing the linear member to fix the linear die member to the structure; And a section extension reinforcing step of curing concrete by pouring concrete for extension reinforcement into the inside of the formwork plate.

Here, the method for reinforcing a section of a ground and underwater structure using the integral mold module further includes a floor clean-up process for arranging a lower outer side of the structure before the sectional reinforcement of the structure is reinforced.

Here, the linear member may include a plurality of brackets radially installed at the center of the structure to closely contact the outer surface of the structure, and having locking protrusions formed on both sides thereof; A linear linking member having a locking protrusion formed at both ends in a shape selected from a steel pipe, a steel bar, and a reinforcing bar to horizontally connect the bracket and the bracket; And a coupler which splits the arbitrary linear linking member to form threaded threads in different directions at both ends and is coupled between them.

Here, the bracket of any one of the plurality of brackets is provided on the same line as the coupler.

Here, the form plate is formed to be smaller than the half-sectional length of the structure so that part of the bracket and the coupler are exposed when the linear member is assembled and assembled, and guide rails are formed at both ends in the longitudinal direction, Is completed, the auxiliary formwork plate is inserted and fixed to the guide rail before the concrete is poured.

Here, the form plate may be any one selected from the group consisting of a fiberboard, an FRP plate, a Euroform, and a plate.

Here, the fiber board and the FRP plate are integrally formed by pouring the concrete so as to reinforce the structure and then curing even if the curing is completed.

Here, the above-mentioned method for reinforcing a section of ground and underwater structures using the integral molding module further includes a lifting equipment installation step of installing lifting equipment such as a chain block on the structure in the case where the structure is an underwater structure.

According to the present invention, the vertical reinforcement and the formwork are fixed to the linear member fixed while being horizontally prestressed on the outer side of the underground and underwater structures, The integrally formed form module is manufactured by assembling the formwork by using a linear member at the upper part of the underground and underwater structure and then lowering the integrally formed form module to the end face reinforced part and prestressing the linear part, And the concrete for reinforcing the cross section is laid in the inside of the formwork to shorten the working time (especially the underwater operation).

Further, according to the present invention, the linear member applies prestressing to the ground and underwater structures, thereby enhancing the seismic performance.

1 is a perspective view illustrating the configuration of an integrated die module applied to a method of extending and reinforcing a section of a ground and a underwater structure using the integrated die module according to the present invention.
2 is a plan view of Fig.
Fig. 3 is a perspective view showing the configuration of the linear member in Fig. 1;
4 is an exploded perspective view of FIG.
5 is a perspective view illustrating the configuration of a linear member according to another embodiment of FIG.
6 is a perspective view illustrating the construction of an integrated die module applied to a method of reinforcing an end face of a ground and a underwater structure using an integrated die module according to another embodiment of the present invention.
Fig. 7 is a plan view of Fig. 6. Fig.
8 is a process diagram for explaining a method of reinforcing a section of a ground and underwater structure using an integrated die module according to the present invention.
FIGS. 9A to 9D are explanatory diagrams for explaining each step of the method for reinforcing the cross-sectional area of underground and underwater structures using the integrated die module according to the present invention.

Hereinafter, the structure of the integrated die module applied to the method of reinforcing the cross-section of the ground and underwater structure using the integrated die module according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

FIG. 1 is a perspective view showing the construction of an integrated die module applied to a method of reinforcing a section of a ground and underwater using an integrated die module according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a perspective view illustrating the configuration of a linear member according to another embodiment of FIG. 1.

1 to 5, an integrated die module 1 applied to a method of reinforcing an area and underwater structure using an integrated die module according to the present invention comprises a form plate 10, a vertical reinforcing bar 20, A connecting pin 30 and a linear member 40.

First, the formwork members 10 are formed in a shape corresponding to the half cross-section of the structure so that a pair of the plate members 10 are mutually coupled to surround the outside of the structure A. At this time, the form plate 10 may be divided into two or more divided portions according to designing, transportation, and construction conditions.

When the linear member 40 is assembled and assembled, a part of the bracket 41 and the coupler 45 are exposed and the guide rails 11 are provided at both ends in the longitudinal direction so that the worker can perform the work When the assembly of the linear member 40 is completed, the auxiliary formwork 10 'is inserted and fixed in the guide rail 11 before the concrete is poured.

The form plate 10 may be any one selected from the group consisting of a fiberboard, an FRP plate, a Euroform, and a plate (general formwork) so as to reinforce the structure A by integrating the concrete after the concrete is cured. It is also possible to manufacture a single plate by connecting several plates in a normal structure.

Subsequently, the vertical reinforcing bars 20 are bound to the linear connecting members 43 of the respective linear members 40, which will be described later, using bundling wires 21.

Next, the connecting pin 30 is a foam tie, and is a typical structure used for molding.

3 and 4, the linear member 40 is composed of a bracket 41, a linear coupling member 43 and a coupler 45. [

The bracket 41 is formed in a shape corresponding to the curvature of the structure A and made of a metal material so as to be radially arranged with respect to the center point of the structure A so as to be in close contact with the outer surface of the structure A, (41a) is formed.

One of the brackets 41 of the plurality of brackets 41 has a pair of linear link members and a bracket positioned on the left side in the drawing symmetrically about the center thereof and a pair of linear link members and a bracket positioned on the right side of the drawing It is preferable that they are provided on the same line as the coupler 45 so as to be separated from each other.

The locking protrusion groove 41a of the bracket 41 is preferably formed in a hemispherical shape so that the angle of the linear coupling member 43 can be adjusted. (Not shown) may be installed.

5, the brackets 41 may be arranged in at least two rows or more of the linear connecting members 43 so that the vertical reinforcing bars 20 can be extended, (Not shown) may be separated from the back surface or may be integrally formed.

The linear linking member 43 is formed in a shape selected from among a steel pipe, a steel bar and a reinforcing bar and is provided at its both ends with a latching protrusion 43a to be inserted into the latching protrusion groove 41a of the bracket 41, To form the structure (A) by prestressing. At this time, it is formed in a hemispherical shape so as to be able to adjust the angle in the engaging projection groove 41a of the linear coupling member 43, and also acts as a horizontal reinforcing bar together with the vertical reinforcing bars 40.

The coupler 45 divides any of the linear coupling members 43 to form threads at different ends in different directions and is coupled between them to apply prestressing to the structure A with the linear coupling member 43, To the structure (A), thereby improving the seismic performance of the structure (A).

The construction of the integrated die module applied to the method of reinforcing the cross section of the ground and underwater structures using the integrated die module according to another embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 6 is a perspective view showing the construction of an integrated die module applied to a method of reinforcing an end face of a ground and a underwater structure using an integrated die module according to another embodiment of the present invention, and FIG. 7 is a plan view of FIG.

That is, the monolithic formwork module 1 according to another embodiment of the present invention is manufactured and applied in a rectangular shape in which the ground and underwater structures A are formed in a square shape, And is formed in a shape corresponding to the cross section.

It is preferable that the bracket 41 of the linear member 40 is formed in a shape corresponding to the edge of the structure A and is bent and formed in close contact with the outer surface of the bracket 41, 41 are formed in the shape of a rectangle and are symmetrically symmetrical with respect to the center line. The three linear linking members and the pair of brackets located on the left side in the drawing and the pair of brackets and the three linear linking members located on the right side in the drawing are separated from each other by a coupler 45, respectively.

Hereinafter, a method of extending and reinforcing a section of a ground and underwater structure using the integrated form module according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 8 is a process diagram for explaining a method of reinforcing a section of a ground and a underwater structure using the integrated form module according to the present invention. FIGS. 9A to 9D are views for explaining a method for reinforcing a cross section of a ground and underwater structure using an integrated die module according to the present invention. Fig. 5 is an explanatory view for explaining each step of the reinforcement method. Fig.

First, an extension and reinforcement method of a surface and a underwater structure using an integrated die module according to the present invention includes a die module manufacturing step (S10), a horizontal foundation floor installing step (S20), a die attaching step (S30) A step (S40) and an extension reinforcing step (S50).

"Formwork Module Manufacturing Process-S10"

First, an integrated die module 1 as shown in Fig. 1 is manufactured in advance in the factory in accordance with the sizes of the ground and underwater structures A to be subjected to the extension reinforcement method.

"Floor Cleaning Process-S20"

As shown in FIG. 9A, the bottom outside of the ground and underwater structure A to be subjected to the cross-sectional expansion and reinforcement method, that is, the bottom is arranged.

&Quot; Form die-bonding process-S30 "

9B, after the pair of integrally molded form modules 1 are lifted using the lifting equipment C, the linear members 40 are assembled on the outside of the structure A The integrally molded form module 1 is assembled.

At this time, when the structure is an underwater structure such as a pier of a bridge installed in a river, a river, a sea or a valley, or a ground structure installed on a rough terrain, it is impossible to enter a lifting device such as a crane. It is preferable to install the lifting equipment C to lift the integral formwork module 1. [

That is, the integrated mold module 1 is brought close to the structure A using a lifting device such as a crane installed on the upper part of the bridge or a lifting device such as a crane installed on the barge, and then the lifting device C installed in the structure A, (1) can be lifted and glued together.

Meanwhile, in the assembling process of the integrated form module 1, the linear coupling member 43 is inserted into the bracket 41 in a state in which the pair of integrally molded form modules are close to each other, To the linear coupling member 43 divided into the linear coupling members 43. [ At this time, the coupler 45 is fastened only to the extent of fixing the linear coupling member 43 so that it can move downward from the outer side of the structure A of the integrated die module 1. [

"Die fixing process-S40"

9C, the assembled monolithic formwork module 1 is lowered to the section extension reinforcing portion of the structure A and then the coupler 45 is rotated to form a prestressing structure A on the structure A with the linear connecting material 43. Then, And the bracket 41 is pressed against the structure A to fix the integrated form module 1 to the structure A.

"Extension of section extension process-S50"

Finally, as shown in FIG. 9D, the concrete for the extension reinforcement of the section is placed in the formwork 10 to be cured. Thereafter, even if the curing is completed, the formwork 10 is removed to reinforce the structure A.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

10: Form plate 10 ': Second form plate
20: vertical reinforcement 30: connecting pin
40: linear member 41: bracket
43: Linear connector 45: Coupler
A: Structure C: Lifting equipment

Claims (9)

In the section extension reinforcement method of ground and underwater structures,
A plurality of linear members horizontally coupled to the outer surface of the structure to form a prismatic shape on the inner surface of the formwork plate formed in a shape corresponding to a half section of the structure, A molding module manufacturing process for assembling the integral mold module by binding the vertical reinforcing bars to the linear member using bundling wires;
A mold assembling step of lifting a pair of the integrally molded mold modules using the lifting equipment and then assembling the linear members outside the structure to assemble the integrated mold modules;
A die fixing step of lowering the integrally molded die module assembled into an end face extension reinforcing portion of the structure, and then applying prestressing while fixing the linear member to fix the linear die member to the structure; And
And an extension reinforcing step of curing the concrete by pouring concrete for extension reinforcement inside the formwork plate. The method of reinforcing a section of ground and underwater structures by using the integrally molded form module. The method according to claim 1,
In the method for reinforcing a section of a ground and a underwater structure using the integrated die module,
Further comprising the step of arranging a lower part of the lower part of the structure before the extension reinforcement of the structure is performed. The method according to claim 1,
Wherein the linear member comprises:
A plurality of brackets provided radially with respect to a center point of the structure so as to be in close contact with the outer surface of the structure and having locking protrusion grooves formed on both sides thereof;
A linear linking member having a locking protrusion formed at both ends in a shape selected from a steel pipe, a steel bar, and a reinforcing bar to horizontally connect the bracket and the bracket; And
And a coupler which splits any of the linear connecting members and forms threads on the opposite ends in different directions, and which is coupled between the connecting members, wherein the method for reinforcing a section of the ground and underwater structures using the unitary form module. The method of claim 3,
Wherein one of the plurality of brackets is a bracket,
And the extension and reinforcement method of the ground and underwater structure using the integrated die module is provided on the same line as the coupler. The method of claim 3,
Wherein the linear member comprises:
And at least one or more rows of the linear connecting members are arranged on the brackets. The method for reinforcing the cross section of the ground and underwater structures using the integrated die module. The method of claim 3,
Wherein the die plate includes:
Sectional length of the structure so that part of the bracket and the coupler are exposed when the linear member is assembled and assembled, and guide rails are formed at both ends in the longitudinal direction so that when the linear member is assembled, Wherein the form plate is inserted and fixed to the guide rail, and the extension and reinforcement method of the section of the ground and underwater structure is performed by using the integral form module. The method according to claim 1,
Wherein the die plate includes:
Fiberboard, FRP plate, Euroform, and plate material is applied to the surface of the building. 8. The method of claim 7,
The fibrous sheet,
A method of reinforcing a section of a ground or underwater structure using an integrated die module, characterized in that the concrete is poured to reinforce the structure and then unified and integrated when the curing is completed. The method according to claim 1,
In the method for reinforcing a section of a ground and a underwater structure using the integrated die module,
Further comprising a lifting equipment installation step of installing lifting equipment such as a chain block on the upper part of the structure when the structure is an underwater structure.

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