KR101439702B1 - Contrete Form for testing And Method of Structural Evaluation of the same - Google Patents

Abstract

A test formwork structure for use in a simulated test for measuring a strain (displacement) and / or a stress of a test formwork structure by filling a test mold structure with a liquid, and a method for evaluating the structural performance thereof are disclosed.
The test mold structure disclosed includes: a first wall panel portion and a second wall panel portion each having a central mold and side molds connected to both sides thereof; A side connection panel connecting both ends of the first and second wall panel parts to form a wall space part; A connecting member for supporting and connecting the central formwork and the side molds of the first and second wall panel portions; A measuring member for measuring at least one of a strain and a stress of the first and second wall panel portions; And a partitioning plate part for dividing a wall space part between the central formwork and the side molds provided in the first and second wall panel parts. In each of the wall space parts separated by the partitioning plate part, A leakage preventing member may be provided to prevent the liquid filled in the wall space portion from leaking to the outside from the respective wall space portions.
According to this test formwork structure, it is possible to confirm the structural safety of the formwork without pouring the concrete into the formwork, and it is possible not only to eliminate the inconvenience of using the concrete casting equipment but also to avoid the concrete waste, Can be achieved.

Description

Technical Field [0001] The present invention relates to a test structure,

The present invention relates to a test mold structure for evaluating the structural performance of a mold used for forming a wall and a method for evaluating the structural performance of the mold. More particularly, the present invention relates to a test mold structure, Or stress test, and a method of evaluating the structural performance thereof.

Formwork is used as concrete supporting plate when concrete is constructed using concrete or reinforced concrete. In the past, wood is mainly used and recently steel is being applied.

These molds must be capable of supporting the loads of concrete acting when the concrete is filled up to a certain height and should be repeatable.

FIGS. 1 and 2 show examples of commonly used formwork. FIG. 1 is a general structure of a form applied to a column, and FIG. 2 is a general structure of a form applied to a wall.

As shown in FIGS. 1 and 2, a general formwork structure 10 'is formed by combining a unit form 10, and each unit form 10 includes a plate material 11, And a plurality of stiffeners (12, 13) coupled to the plate (11) for reinforcement. The reinforcing members 12 and 13 include longitudinal stiffeners 12 mounted in the longitudinal direction on the periphery of the plate members and transverse stiffeners 12 mounted to the plate members in the transverse direction to resist loads applied from the plate members 11 13). The reinforcing members 12 and 13 are configured to be coupled to the plate member 11 by welding or the like and a joining operation by welding or the like is also performed on a portion where the longitudinal stiffener 12 and the transverse stiffener 13 are in contact with each other.

The fastening holes 16 are formed in the reinforcing members 12 and 13 so as to be connected to the neighboring molds 10 when the respective molds 10 are arranged to correspond to the shape of a column or a wall. A connecting member 21 made of a rectangular member or the like may be provided at the corner of the column or the wall to connect the adjacent molds 10 to the connecting hole 16 of the form 10 The hole 21 is formed.

In order to manufacture such a formwork structure 10 ', the plate material 11 and the reinforcing materials 12 and 13 must have appropriate strength and structure so as to resist the load of the concrete C.

On the other hand, in the field work, the weight of the formwork 10 is a very important factor because the worker must carry the form 10 and move.

Taking this into consideration, a case has been introduced in which aluminum is used as a material for lightening the form 10, and a lightweight material is recently emerging for shortening the construction air. For example, attempts have been made to use various materials such as plastics and magnesium, which is the lightest metal on the earth, for the production of molds.

As described above, in order to use various lightweight materials in the mold 10, it is necessary to secure the safety for the field application. For this, it is necessary to secure the structural safety for the material.

In addition, in the case of changing the dimension of the form 10, it is necessary to confirm the safety of the formwork as well as the case of using the light-weighted material in the form 10.

Therefore, when the shape and dimensions of the column, the thickness of the wall surface, or the material constituting the form 10 are changed, the design of the new form 10 becomes necessary.

When the form 10 is designed as described above, a plurality of reinforcing materials 12 and 13 must be installed on the form 10 so as to resist the load of the concrete.

However, in the case where the reinforcing members 12 and 14 are installed more than necessary, the weight of the formwork 10 increases, which is against the weight reduction. In particular, the reinforcing members 12 and 13 are installed excessively at the portion where the load is small The workability of the reinforcing members 12 and 13 due to the increase in weight is not only deteriorated, but also waste of the material is brought about.

On the other hand, when the reinforcing members 12 and 13 are provided in a small amount, the plate members 11 are not deformed in a buckling manner because the reinforcing members 12 and 13 can not withstand the loads applied from the plate members 11, The welded portion of the plate 11 and the welded portion of the vertical reinforcement 12 and the transverse reinforcement 13 are separated from each other and the form 10 is broken. In this case, the operation is interrupted, leading to an increase in time and cost, and a delay in air.

Therefore, it is essential to secure structural safety for the newly designed formwork.

Conventionally, in order to confirm the structural safety of the newly designed form 10, the concrete is directly used in the formwork 10, but in this case, it is necessary to use the equipment every time to place the concrete C There is an inconvenience. Especially, after the evaluation of concrete performance for the formwork (10), it takes a lot of cost and time to process the concrete waste, and it is difficult to recycle the formwork having the performance evaluation, so that the waste of time and cost Is large.

SUMMARY OF THE INVENTION The present invention has been made to solve at least some of the problems of the prior art as described above, and it is an object of the present invention to provide a mold structure for testing and a structure performance evaluation, which can confirm the structural safety of a mold constituting a mold structure without pouring concrete into the mold structure And a method thereof.

Another object of the present invention is to provide a test mold structure and a structural performance evaluation method thereof that can minimize the number of the reinforcing members and enable the weight of the mold to be reduced.

It is another object of the present invention to provide a test formwork structure capable of evaluating structural performance of a plurality of molds having different materials or different reinforcement structures through one test mold structure and a method for evaluating the structural performance thereof do.

According to an aspect of the present invention, there is provided a floor panel including a first wall panel part and a second wall panel part, the first wall panel part having a central formwork and a side mold connected to both sides of the central formwork; A side connection panel connecting both ends of the first wall panel part and the second wall panel part to form a wall space part between the first wall panel part and the second wall panel part; A connecting member for supporting and connecting the central mold and side mold of the first wall panel part and the central mold and side mold of the second wall panel part; A measuring member for measuring at least one of strain and stress of the first wall panel part and the second wall panel part; And a partitioning plate portion that divides the wall space portion between the central mold and side molds provided in the first wall panel portion and the second wall panel portion across the wall space portion, And a leakage preventing member for preventing the liquid filled in the respective wall space parts from leaking to the outside from the respective wall space parts.

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At this time, the water leakage preventing member may include a vinyl member installed in each wall space portion.

Preferably, the central formwork and the side molds each comprise a plate material and a stiffener coupled to the plate material to reinforce the plate material, wherein the measurement member is adapted to measure at least one of a strain and a stress of the plate material or the stiffener, It can be installed in the stiffener.

More preferably, the measuring member may be installed in the stiffener of the central mold.

Also, preferably, the measuring member may measure at least one of strain and stress of the connecting member.

More preferably, at least some of the central formwork and side formwork provided in the first and second wall panel portions may be made of different materials or have different reinforcement structures.

Also, preferably, the material constituting the central mold and side molds provided in the first and second wall panel portions may include a magnesium alloy or an aluminum alloy.

According to another aspect of the present invention, there is provided a method of manufacturing a mold for a test mold for forming a wall space part between a first wall panel part and a second wall panel part each having a central formwork and side molds connected to both sides of the central mold, ; And a mold simulation testing step of measuring at least one of a strain and a stress of the test mold structure by filling the wall space portion of the test mold structure with a liquid to evaluate the performance of the test mold structure,
The molding simulation test step may include a step of filling the wall space portion of the test mold structure with liquid, a measurement process of measuring at least one of strain and stress acting on the test mold structure filled with the liquid, And a structural performance checking step of checking whether the converted value is within a design permissible strain or stress range,
The test formwork structure has a partitioning plate portion that is divided across the wall space portion between the central formwork and the side molds provided in the first wall panel portion and the second wall panel portion,
The step of filling the test mold structure with liquid may include a step of installing a water leakage preventing member to prevent the liquid filled in each of the wall space portions divided by the partitioning plate portion from leaking to the outside from the wall space portion And a method for evaluating the structural performance of the test formwork structure.

At this time, the measuring step may measure at least one of the strain and the stress acting on the central mold of the test mold structure.

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Preferably, the test mold structure includes a connecting member for supporting and supporting the central mold and side mold of the first wall panel part and the central mold and side mold of the second wall panel part, And may be configured to measure at least one of the acting strain and the stress.

Also, preferably, the value converted in the conversion step can be obtained by multiplying the measured value obtained in the measuring step by a value obtained by dividing the specific gravity of the concrete by the specific gravity of the liquid.

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Meanwhile, in the method for evaluating structural performance of a test formwork structure according to an embodiment of the present invention, when the value converted in the structural performance checking step is out of allowable design strain or stress allowed in the central formwork or the side formwork, And a reinforcing structure changing step of changing a reinforcing structure for the central mold or the side mold.

According to an embodiment of the present invention having such a configuration, at least one of the strain (displacement) and the stress acting on the test mold structure by filling the wall space portion formed in the test mold structure with liquid is evaluated, and the performance evaluation of the test mold structure It is possible to confirm the structural safety of the formwork without pouring the concrete into the formwork. Therefore, according to one embodiment of the present invention, it is possible to eliminate the inconvenience of using the equipment every time the structural evaluation of the formwork is performed for pouring concrete, and it is possible to obtain an excellent effect that concrete waste is not generated. In particular, since the wall space portion of the test formwork structure is filled with the liquid, the strain and / or the stress can be measured, so that the structural performance evaluation can be performed quickly.

In addition, according to the embodiment of the present invention, since the mold can be separated by draining the water filled in the test formwork structure, disassembly and reuse of the test formwork structure can be easily performed, . Furthermore, since the concrete waste does not remain on the surface of the formwork, when the reinforcement structure of the test formwork is required to be changed, it is possible to easily change the position and number of the reinforcement structure without any work on the disassembled formwork.

According to an embodiment of the present invention, the center formwork and / or the side formwork of one test formwork structure may be made of different materials or have different reinforcement structures, so that structural performance evaluation for several formworks at one time The effect can be obtained.

According to an embodiment of the present invention, since the form simulation test through the hydrostatic pressure can be performed a plurality of times within a short time, the number of the stiffeners can be minimized by appropriately selecting the position and the number of the stiffeners through the form simulation test So that it is possible to reduce the weight of the mold.

1 is a schematic view showing a general structure of a mold applied to a column;
2 is a schematic view showing a general structure of a mold applied to a wall surface;
3 is a perspective view of a test mold structure according to an embodiment of the present invention.
4 is a perspective view showing a state in which a central die is separated from the test die structure shown in FIG.
5 is a perspective view showing a state in which a central die is separated from the test die structure shown in FIG.
FIG. 6A is a front view of the test mold structure shown in FIG. 2; FIG.
FIG. 6B is a rear view of the test mold structure shown in FIG. 2; FIG.
7 is a flowchart illustrating a method for evaluating a performance of a formwork structure according to an embodiment of the present invention.
FIG. 8 is a structural analysis diagram for a mold, in which (a) is a structural analysis diagram for a displacement (strain), (b) is a structural analysis diagram for a stress Lt; / RTI >
FIG. 9 is a graph showing the strains at points A1 to A7 in FIG. 6B. FIG.
10 is a graph showing the strains at points T1 and T3 of the connecting member shown in Fig.
11 is a perspective view of a die formwork for use in a die simulation test using a liquid according to an embodiment of the present invention.
FIG. 12 is a graph showing the strain of the test formwork structure shown in FIG. 11 by the mold simulation test.
13 is a graph showing the deformation rate of the test formwork structure shown in Fig. 11 by the concrete pouring test.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Furthermore, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise.

In this specification, terms such as " comprise "," comprise ", and " have "mean that there exist features, numbers, steps, operations, elements, parts, And should not be construed to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

3 to 5, 6A and 6B, a description will be made of a test formwork 100 according to an embodiment of the present invention.

The test mold structure 100 according to an embodiment of the present invention is a mold structure for forming a wall (wall), and includes a first wall panel part 210 and a second wall panel part 220, A panel 150, a connecting member T, and a measuring member, and may further include a dividing plate portion 140.

The first wall panel part 210 and the second wall panel part 220 each have a center mold 120 and 120 'located at the center and a side mold 800 located at both sides of the central mold 120 and 120' 110, 110 ', 130, and 130'.

At this time, each of the unit molds 110, 110 ', 120, 120', 130, and 130 'includes plate materials 111, 111', 121, 121 ', 131 and 131' And a reinforcing member for reinforcing the plate materials 111, 111 ', 121, 121', 131, and 131 '.

The stiffener includes longitudinal stiffeners 112, 112 ', 122, 122', 132 and 132 'for longitudinally reinforcing the plate members 111, 111', 121, 121 ', 131 and 131' 113 ', 123, 123', 133, 133 'for reinforcing the transverse reinforcement members 111, 121', 121 ', 131, 131' in the transverse direction.

The longitudinal stiffeners 112, 112 ', 122, 122', 132 and 132 'may be formed with fasteners H for fastening fastening means such as bolts / nuts for connection with adjacent molds.

3 to 5, 6A and 6B, the side molds 110, 110 ', 130, and 130' are disposed on both sides of the central molds 120 and 120 ' It is also possible to provide a plurality of side molds 110, 110 ', 130, 130' on one side of each of the molds 120, 120 '.

The side connection panel 150 includes a first wall panel portion 210 and a second wall panel portion 220 to form wall space portions S1, S2, and S3 between the first wall panel portion 210 and the second wall panel portion 220, And both ends of the second wall panel part 220 are connected.

The side connection panel 150 may have a strength enough to withstand the loads of the liquid or concrete contained in the wall space portions S1, S2 and S3, and the shape and the reinforcing structure thereof are not particularly limited.

 5, the connecting member T may be formed at a central portion of the first wall panel portion 210 and a central portion of the second wall panel portion 220, While supporting and supporting the form 120 'and the side molds 110', 130 '.

The connecting member T may include dies 110, 120 and 130 provided on the first wall panel part 210 and dies 110 ', 120' and 130 'provided on the second wall panel part 220. [ The first wall panel part 210 and the second wall panel part 220 are not connected to each other when the liquid or the concrete is placed inside the test mold structure 100 .

When the first wall panel part 210 and the second wall panel part 220 are connected by the side connection panel 150 as described above, the wall space parts S1, S2 and S3 are formed in the test mold structure 100, .

In order to confirm the structural safety of the dies 110, 110 ', 120, 120', 130, 130 'provided in the test mold structure 100 without pouring concrete into the wall space portions S1, S2, Liquid can be filled and the structural performance evaluation of the test formwork structure 100 can be performed.

At this time, a leakage preventing member (not shown) may be installed in the wall space S1, S2, S3 so that liquid is not discharged to the outside of the wall space S1, S2, S3 when the liquid is filled. The leakage preventing member may be a sealing member (not shown) provided in a gap between the dies 110, 110 ', 120, 120', 130, 130 ', for example. However, It is preferable to use a vinyl member having a size corresponding to the volume of the wall space portions S1, S2, S3. Particularly, when a plastic member is used as a waterproofing member, it is advantageous in that it can be removed not only for convenience of mounting but also for dismantling the formwork without any extra work.

On the other hand, when one leakage preventing member is provided in the wall space S1, S2, S3, a large-sized vinyl member corresponding to the wall space S1, S2, S3 is required. However, It is not easy.

3 and 4, the test fixture structure 100 according to one embodiment of the present invention includes a partition plate member 140 dividing the wall space S1, S2, S3 into a plurality of . That is, the leakage preventing member such as a vinyl member may be provided in each of the wall space portions S1, S2, S3 divided by the partitioning plate portion 140, and then the liquid may be filled.

The measuring member may have a strain rate of the central dies 120 and 120 'and the side dies 110, 110', 130 and 130 'constituting the first wall panel part 210 and the second wall panel part 220 The first wall panel part 210 and the second wall panel part 220 for measuring at least one of the stress and the stress.

Specifically, the measuring member is equipped with a measuring member for measuring at least one of a strain and a stress of a plate or a stiffener constituting the central dies 120, 120 'and the side dies 110, 110', 130, 130 ' .

 For example, as shown in FIG. 6B, measurement members for measuring at least one of strain and stress may be provided at points A1 to A7, respectively.

At this time, it is preferable that the measuring member is installed on the reinforcing member in order to evaluate whether the reinforcing member reinforces the structural performance of each of the formworks. However, the present invention is not limited thereto and the measuring member may be installed on the plate member.

The measuring member is installed in the central molds 120 and 120 'to measure the strain or stress of the central molds 120 and 120' due to the liquid filled in the wall space S1, S2 and S3 desirable.

Specifically, in the case of the test mold structure 100 constituting the wall, the strain and the stress acting on the central molds 120 and 120 'are determined by the stress and stress acting on the central molds 120 and 120' Liquid or concrete as well as liquid or concrete charged in the wall space S1, S3 corresponding to the side molds 110, 110 ', 130, 130'. Therefore, it is necessary to measure the strain or stress of the central formwork 120, 120 'for accurate structural performance evaluation of the wall formwork structure 100.

A measuring member for measuring at least one of a strain and a stress is also mounted on each connecting member T in order to evaluate whether the structural formability of the test mold structure 100 through the connecting member T is appropriate .

For example, a measuring member may be installed on each connecting member T as shown in the example in Fig.

As shown in FIGS. 6A and 6B, the central molds 120 and 120 'and the side molds 110 and 110' provided in the first and second wall panel sections 210 and 220 ' , 130, 130 'may have different reinforcing structures. Therefore, when one test mold structure 100 is manufactured, the central molds 120 and 120 'of the first wall panel part 210 and the central molds 120 and 120' of the second wall panel part 220 It is possible to evaluate the structural performance of the structure, which can shorten the time required for the performance evaluation of the formwork structure.

6A shows that a part of the formwork 130 of the formwork 110, 120 and 130 constituting the first wall panel part 210 has a reinforcement structure different from that of the other formwork 110 and 120, 6B shows that a part of the formwork 130 'of the formwork 110', 120 'or 130' constituting the second wall panel part 220 has a reinforcement structure different from that of the other formwork 110 'or 120' The central mold 120 and the side molds 110 and 130 constituting the first wall panel section 210 have the same reinforcing structure and the central mold 120 constituting the second wall panel section 220 120 'and the side molds 110', 130 'have the same reinforcing structure. The molds 110 ', 120', and 130 'provided in the second wall panel unit 220 have the same reinforcing structure as the molds 110, 120, and 130 provided in the first wall panel unit 210, It is also possible to have a reinforcement structure different from that of the first embodiment.

In another embodiment, the central panel 120 and the central panel 120 'provided on the first and second wall panel sections 210 and 220 and the side panels 110, 110', 130 and 130 ' It is also possible to make different materials. The central mold 120 and the side molds 110 and 130 constituting the first wall panel part 210 may be made of a magnesium alloy plate material and the central moldings 120 and 130 forming the second wall panel part 220 may be made of magnesium alloy, And the side molds 120 'and the side molds 110' and 130 'may be made of an aluminum alloy sheet material. Of course, it is also possible to apply different materials to the central dies 120, 120 'and the side dies 110, 110', 130, 130 'which form the respective wall panel portions.

Meanwhile, the material used for the test formwork structure 100 according to an embodiment of the present invention is preferably an aluminum alloy or a magnesium alloy for light weight, but is not limited thereto and may be a material that can be used as a mold such as a non- Is not particularly limited.

In particular, the magnesium alloy has a weight of about 2/3 of that of the aluminum alloy. In particular, since the magnesium alloy has excellent weldability, the ease of fabrication can be secured when the plate and the reinforcing material are both made of magnesium alloy.

Next, with reference to FIG. 7, a description will be made of a method (S100) for evaluating the performance of the formwork structure according to another aspect of the present invention.

 The method for evaluating the performance of a mold structure according to an exemplary embodiment of the present invention includes a step S130 of performing a mold test by filling a test mold with a liquid to evaluate the structural performance of the mold .

More specifically, the method for evaluating the performance of a formwork structure according to an embodiment of the present invention includes the steps of forming a mold S120 for forming a test mold structure 100 and a step S120 for forming a wall space portion of the test mold structure 100 (S130) in which the performance of the test formwork structure 100 is evaluated by measuring at least one of the strain (displacement) and the stress acting on the test formwork structure 100 by filling the test mold structure S1, S2, And may further include a form design step S110 for designing and modifying the form model before the form production step S120.

Referring to FIG. 3, in step S110 of designing the formwork, a step S111 of designing a form model is first performed considering the thickness, shape, height, and the material to be applied to the form of the column or wall to which the form is applied . That is, when the concrete pouring operation for forming the wall surface is performed, each of the molds provided in the test mold structure 100 may have the central molds 120 and 120 'or the side molds 110 and 110' 130, and 130 ', considering the thickness of the plate, the shape and spacing of the stiffener, the thickness, and the fixing position of the fastening hole H for connecting the formwork.

 The size and structure of the unit form applied to the construction site varies, but the size of the general unit form is used, for example, in the range of 450 to 600 mm in width and 1200 to 2400 mm in length. The fastening holes H are arranged at regular intervals of 150 mm on the longitudinal stiffeners 112, 112 ', 122, 122', 132, and 132 ', respectively. A plurality of transverse stiffeners 113, 113 ', 123, 123', 133 and 133 'are installed on the plates 111, 111', 121, 121 ', 131 and 131' The interval between the transverse stiffeners 113, 113 ', 123, 123', 133, 133 'provided at the lower part is narrower than that at the upper side.

The unit molds 110, 110 ', 120, 120', 130 and 130 'designed in this way can be used directly in the mold simulation test step S130 described below. However, in order to minimize the mold simulation test, ).

The structural analysis step (S112) analyzes the designed form model to analyze at least one of the strain (displacement) and the stress acting on the form model. Although numerical analysis can be used in this structural analysis step S112, the present invention is not limited thereto and a known structural analysis method can be used.

In this structural analysis step (S112), the physical property values of the formwork material, that is, the Young's modulus and the prism ratio, are considered. For example, when a magnesium alloy is used as a lightweight material, structural analysis is performed on strain (displacement) and stress in consideration of the magnesium alloy's Young's modulus 45 GPa and Prussian ratio 0.35.

Then, it is judged whether the strain (displacement) and the stress obtained in the structural analysis step (S112) are acceptable for the material constituting the formwork (S113).

That is, in the determination step S113, the strain (displacement) and the stress obtained in the structure analysis step S112 are evaluated and compared with respect to the mold material.

8 (a)) and the stress (FIG. 8 (b)) as shown in FIG. 8, the strain (displacement) and the stress When the stress is considered in the formwork, it is judged whether it is suitable for the thickness of the applied plate, the thickness of the stiffener, the shape and the position, and whether it does not exceed the maximum allowable stress or maximum allowable strain (displacement) of the formwork in some areas.

The thickness of the plate materials 111, 111 ', 121, 121', 131 and 131 'and the thickness of the transverse stiffeners 113, 113', 123 and 123 ', when not in the allowable strain (stress) , The thickness, and the installation position of the longitudinal stiffeners 112, 112 ', 122, 122', 132, 132 ', 133, 133' and the longitudinal stiffeners 112, 112 ', 122, 122', 132, 132 '.

When the formwork designing step S110 is completed and the structure of the formwork expected to have appropriate structural performance is determined, a formworking step S120 is performed to form the test formwork body 100 according to the designed specifications.

Thereafter, a form simulation test step (S130) for evaluating the performance of the test formwork structure 100 is performed.

In the mold simulation test step S130, the test mold structure 100 is filled with a liquid to measure at least one of the strain (displacement) and the stress acting on the test mold structure 100. FIG.

That is, in the form simulation test step S130, the liquid that does not affect the form shown in FIG. 3 is filled in the wall space portions S1, S2, and S3.

Specifically, the mold simulation test step S130 includes a step S131 of filling the wall space portions S1, S2, S3 of the test mold structure 100 with liquid, a test mold form 100), a conversion step (S133) of converting the measured value into a case where concrete is used, and a conversion step of converting the converted value into a design permissible strain (Displacement) and a structural performance confirmation step (S134) for confirming whether or not it is in the stress range.

First, the liquid used in the liquid filling step (S131) is not particularly limited as long as it is safe, but it is preferable to use water that is inexpensive, readily available, and can be discarded.

The liquid filling step S131 is performed so that liquid is not discharged to the exterior of the test mold structure 100, that is, the wall space portions S1, S2, and S3 at the time of liquid filling. (S1, S2, S3) is provided with a leakage preventing member (not shown) for preventing the leakage of the liquid. For example, a sealing member provided in a gap of a mold may be used as the leakage preventing member, but it is preferable that a vinyl member having a size corresponding to the molding volume is used as long as the liquid contained in the molding can be confined. Particularly, when a plastic member is used as a waterproofing member, it is advantageous in that it can be removed not only for convenience of mounting but also for dismantling the formwork without any extra work.

On the other hand, when one leakage preventing member is provided in the wall space S1, S2, S3, a large-sized vinyl member corresponding to the wall space S1, S2, S3 is required. However, It is not easy.

3 and 4, the liquid filling process S131 is performed by providing a partitioning plate portion 140 for dividing the wall space S1, S2, S3 into a plurality of portions, S1, S2, and S3 divided by the partition walls 140, 140, respectively, and then fill the liquid.

In order to perform the measurement step S132, a measurement member (for example, a strain gauge) capable of measuring a strain (displacement) and / or a stress as shown in FIG. 6 (b) ). At this time, a load is applied to the lower part of the dies 110, 110 ', 120, 120', 130, 130 'so that the width of the dies located at the upper part of the dies 110, 110', 120, 120 ' The measurement members are installed more densely on the transverse stiffeners 113, 113 ', 123, 123', 133 and 133 'located on the lower side than the stiffeners 113, 113', 123, 123 ', 133 and 133' It is advantageous. 6B, the measurement is performed only on the seven points A1 to A7 of the central formwork 120 'for the sake of simplicity of explanation. However, the longitudinal stiffeners 122' and the plate materials 121 ' (Displacement) and / or stress can be measured, and the strain (displacement) and / or stress can be measured at a plurality of points with respect to one of the stiffeners 122 'and 123'.

The measuring member is installed in the central molds 120 and 120 'to measure the strain or stress of the central molds 120 and 120' due to the liquid filled in the wall space S1, S2 and S3 desirable.

Specifically, in the case of the test mold structure 100 constituting the wall, the strain and the stress acting on the central molds 120 and 120 'are determined by the stress and stress acting on the central molds 120 and 120' Liquid or concrete as well as liquid or concrete charged in the wall space S1, S3 corresponding to the side molds 110, 110 ', 130, 130'. Therefore, it is necessary to measure the strain or stress of the central formwork 120, 120 'for accurate structural performance evaluation of the wall formwork structure 100.

The measuring step S132 measures at least one of the strain and the stress of each connecting member T in order to evaluate whether the structural performance of the test formwork structure 100 through the connecting member T is proper, . For example, a measuring member may be installed on each connecting member T as shown in the example in Fig.

9 shows the strain measurement results at measurement points A1 to A7 which are intermediate positions of the seven transverse stiffeners 123 'provided in the central formwork 120' of the second wall panel portion 220 of FIG. 6b .

Referring to the strain measurement graph shown in FIG. 9, the maximum strain is the largest at the measurement point A1 for the transverse stiffener 123 'located at the lowermost position in FIG. 6B, A7 shows that the maximum strain is the smallest.

9, filling of the wall space portions S1, S2, S3 of the test formwork structure 100 with water is started (0 second) until the time indicated by L1 in Fig. 9 S1, S2, and S3). When the water level of the filled water is stabilized, the water is completely filled in the wall space portions S1, S2, and S3 (L3 ), And then drained.

Referring to FIG. 9, it can be seen that as the water is filled in the wall space portions S1, S2, and S3, the strain increases gradually. At the time when the water is completely filled (L3 in FIG. 9) , And then the water is discharged from the wall space portions S1, S2, and S3, the strain gradually decreases.

9, the maximum strain when water (liquid) is filled in the wall space portions S1, S2, and S3 occurs at point A1, which is the lowermost transverse stiffener 123 ' 10 ^-6 (450 micro-strain). 9, the maximum strain is generated in the lowermost transverse stiffener 123 '. However, when the transverse stiffener 123' is not sufficiently installed, the transverse stiffener 123 'or the plate member 121' The maximum strain may occur at the part.

On the other hand, although Fig. 9 has been explained from the viewpoint of the strain, it is also possible to perform the measurement on the stress.

Strain and / or stress can be measured also for the connecting member T similarly to the strain measurement on the central mold 120 'of the second wall panel part 220 described above.

FIG. 10 shows the results of measuring strain at T1 and T3 of the connecting member T shown in FIG. 5 when measuring the strain on the central mold 120 'of FIG.

In the case of FIG. 10, the maximum strain occurred at the point T3, and the size was approximately 500 * 10 ^-6 (500 micro-strain).

Next, the measured value is subjected to a conversion process (S133) in which concrete is used.

Since the specific gravity of water and the specific gravity of concrete are about three times, the difference between the hydrostatic pressure when the water is filled in the wall space S1, S2, S3 and the hydrostatic pressure when the concrete is filled is about three times.

Accordingly, in the conversion step (S133), the measured value obtained in the measuring step (S132) is multiplied by a value obtained by dividing the specific gravity of the concrete by the specific gravity of the liquid, so that the strain (displacement) and / (Displacement) and / or stress value acting on the form when the concrete is filled in the concrete through the through-hole.

This can be confirmed from the relationship between FIG. 12 showing the strain by the formworking test and FIG. 13 showing the strain by the concrete pouring test for the column formwork structure 10 'shown in FIG.

The column formwork structure 10 'shown in FIG. 11 has the same configuration as the formwork structure 10' shown in FIG. 1 except that it is filled with the liquid 30 instead of the concrete C A detailed description thereof will be omitted.

12 shows the strain measurement results at measurement points A to F, which are intermediate positions of the six transverse stiffeners 13 shown in Fig. 11

Referring to the strain measurement graph shown in FIG. 12, the maximum strain at the measurement point A for the stiffener 13 at the lowermost position in FIG. 11 is the largest, and the maximum strain at the measurement point F at the uppermost stiffener 13 Is the smallest.

12, the filling of the mold 10 with water is started (0 second), and the strain gradually increases until the time when the mold 10 is completely filled with water (indicated by X1 in FIG. 12) It can be seen that as the water is discharged from the mold, the strain gradually decreases. On the other hand, the maximum strain when the mold is filled with water through the graph of FIG. 12 occurs in the lowermost transverse stiffener 13, and the size is approximately 580 * 10 ^-6 (580 microstrain).

12 and 13, when the space of the formwork structure 10 'is filled with water as shown in FIG. 12, the deformation of the formwork 10 acts on the formwork 10' as shown in FIG. Of the strain acting on the form 10 when the concrete is filled.

This shows that the maximum strain at point A indicated by X2 in FIG. 13 is 1750 * 10 ^-6 (1750 microstrain) which is approximately three times the maximum strain at 580 * 10 ^-6 at point A measured by filling with water, It can be confirmed from FIG. 12 that the difference between FIG. 12 and FIG. 13 is approximately three times larger. Therefore, it can be confirmed that when hydrostatic pressure test through liquid (water) passes through the conversion process, it is almost the same as the test result using actual concrete.

In FIG. 13, the decrease in the strain after X2 is due to the fact that the pressure applied to the die is reduced due to the hardening of the concrete. Also, as can be seen from the X-axis in FIG. 13, it can be confirmed that it takes a lot of time for concrete hardening to evaluate the formability of the concrete by directly filling the concrete.

The results shown in FIGS. 11 to 13 are performed on the mold test mold structure 10 ', but the same results can be applied to the mold test mold assembly 100 according to an embodiment of the present invention.

As described above, after the process of filling the mold with liquid (for example, water) and converting the strain (displacement) and stress acting on the form into concrete when it is filled, the converted value becomes the allowable design strain Displacement) and a stress range (Step S134).

The structural performance checking step S134 is similar to the above-described determination step S113 in that when the converted strain and stress are considered in the formwork material, the structural performance checking step S134 is performed in accordance with the thickness of the applied plate material, , And that it does not exceed the maximum allowable stress or maximum allowable strain (displacement) even in some areas.

If the calculated value in the structural performance checking step S134 is smaller than the design permissible strain (displacement) and stress (allowable) in the material of the central mold 120 or 120 'or the side mold 110, 110', 130 or 130 ' It is possible to further perform the reinforcing structure changing step S140 for changing the reinforcing structure of the central mold 120, 120 'or the side molds 110, 110', 130, 130 '.

The reinforcing structure changing step S140 is a step of changing the reinforcing structure such that the thickness of the plates 111, 111 ', 121, 121', 131 and 131 'and the thickness of the transverse stiffeners 113, 113' 123, 123 ', 133, 133', at least one of the number, shape, thickness, However, since the reinforcement design for the formwork has already been performed in the reinforcement designing step (S114), the range of change will not be large.

On the other hand, in contrast to the above, when the strain (displacement) and the stress which are significantly lower than the design allowable strain (displacement) and the stress are generated, the thickness of the transverse stiffeners 113, 113 ', 123, 123', 133 and 133 ' Or to change or reduce the installation location is also possible.

In this way, after confirming whether the maximum permissible stress or maximum allowable strain (displacement) acting on the form works through the form simulation test step (S130), it can be immediately applied to the field. However, It is possible to check once again whether there is no problem when the concrete is applied by performing a concrete casting test step (S150) in which a strain (displacement) and a stress actually acting on the test casting are directly evaluated. As a result, it is possible to confirm the strain (displacement) or the stress acting on the form when the concrete is poured, so that it is possible to have higher reliability.

As described above, the method for evaluating the structural performance of a mold according to an embodiment of the present invention is characterized in that the wall space portions S1, S2, and S3 of the test mold structure 100 are filled with liquid to form the test mold structure 100, The test mold structure 100 is subjected to a mold simulation test step of evaluating the performance of the test mold by measuring at least one of the strain (displacement) and stress acting on the central molds 120 and 120 'and the connecting member T, The structural safety of the form can be confirmed without pouring the concrete into the mold.

Therefore, not only when various materials are applied to formwork for lighter weight, but also when new formwork is required, such as when the shape or size of a column or the thickness of a wall is changed even if an existing material is used, And it is advantageous in that reliability similar to the case of using the concrete directly can be secured.

On the other hand, an aluminum alloy, a magnesium alloy, or the like is suitable as a material for lightening.

In particular, the magnesium alloy has a weight of about 2/3 of that of the aluminum alloy. In particular, since the magnesium alloy has excellent weldability, the ease of fabrication can be secured when the plate and the reinforcing material are both made of magnesium alloy.

Thus, after securing the structural performance through the performance evaluation method of the formwork structure, it is possible to manufacture a large number of dies suitable for the wall of a specific dimension.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims I would like to make it clear.

100 ... test formwork structure
110, 110 ', 130, 130' ... side mold
111, 111 ', 121, 121', 131, 131 '
112, 112 ', 122, 122', 132, 132 '... longitudinal stiffeners
113, 113 ', 123, 123', 133, 133 '... transverse stiffeners
120, 120 '... central mold
140 ... partition plate member
150 ... side connection panel
210 ... first wall panel section
220 ... second wall panel section
H ... Fasteners
S1, S2, S3 ... wall space
T ... connecting member

Claims (16)

A first wall panel part and a second wall panel part respectively having a central formwork and side molds connected to both sides of the central formwork;
A side connection panel connecting both ends of the first wall panel part and the second wall panel part to form a wall space part between the first wall panel part and the second wall panel part;
A connecting member for supporting and connecting the central mold and side mold of the first wall panel part and the central mold and side mold of the second wall panel part;
A measuring member for measuring at least one of strain and stress of the first wall panel part and the second wall panel part; And
And a partitioning plate portion which is provided to the first wall panel portion and the second wall panel portion and which divides the wall space portion between the central mold and the side molds,
Wherein each of the wall space portions separated by the partitioning plate portion is provided with a water leakage preventing member for preventing the liquid filled in each of the wall space portions from leaking to the outside from the respective wall space portions. delete The method according to claim 1,
Wherein the water leakage preventing member includes a vinyl member installed in each of the wall space portions. The method according to claim 1,
Wherein the central mold and the side mold each have a plate material and a reinforcing material joined to the plate material to reinforce the plate material,
Wherein the measuring member is installed on a plate or a stiffener to measure at least one of strain and stress of the plate or the stiffener. 5. The method of claim 4,
Wherein the measuring member is installed on a stiffener of the central formwork. The method according to claim 1,
Wherein the measuring member measures at least one of strain and stress of the connecting member. 7. The method according to any one of claims 1 to 6,
Wherein at least some of the central formwork and the side formwork of the first and second wall panel portions are made of different materials or have different reinforcement structures. 7. The method according to any one of claims 1 to 6,
Wherein a material constituting the central mold and side molds provided in the first and second wall panel sections includes a magnesium alloy or an aluminum alloy. A mold making step of forming a test mold structure forming a wall space portion between the first wall panel portion and the second wall panel portion having the central mold and the side molds connected to both sides of the central mold; And
A mold simulation test step of measuring a strain and a stress of the test mold structure by filling the wall space portion of the test mold structure with liquid to evaluate the performance of the test mold structure;
/ RTI >
In the mold simulation test step,
A step of filling liquid in the wall space of the test mold structure, a measurement process of measuring at least one of strain and stress acting on the test mold structure filled with the liquid, And a structural performance confirmation step of confirming whether the converted value is within a design permissible strain or stress range,
The test formwork structure has a partitioning plate portion that is divided across the wall space portion between the central formwork and the side molds provided in the first wall panel portion and the second wall panel portion,
The step of filling the test mold structure with liquid may include a step of installing a water leakage preventing member to prevent the liquid filled in each of the wall space portions divided by the partitioning plate portion from leaking to the outside from the wall space portion A method for evaluating structural performance of a test formwork structure. delete 10. The method of claim 9,
Wherein the measuring step measures at least one of strain and stress acting on a central die of the test die structure. 10. The method of claim 9,
Wherein the test mold structure includes a connecting member for supporting and supporting the central mold and side mold of the first wall panel part and the central mold and side mold of the second wall panel part,
Wherein the measuring step measures at least one of strain and stress acting on the connecting member. 10. The method of claim 9,
Wherein the value converted in the conversion step is obtained by multiplying the measured value obtained in the measuring step by a value obtained by dividing the specific gravity of the concrete by the specific gravity of the liquid. 10. The method of claim 9,
Wherein the water leakage preventing member includes a vinyl member installed in each of the wall space portions. delete 10. The method of claim 9,
And a reinforcing structure changing step of changing the reinforcing structure for the central formwork or the side formwork when the value converted in the structural performance checking step is out of allowable design allowable strain or stress in the central formwork or side formwork, Wherein the structural performance of the test formwork structure is evaluated.

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