KR101561043B1 - Composite pressing ahchoraging apparatus and structure reinforcing method using the same - Google Patents

Composite pressing ahchoraging apparatus and structure reinforcing method using the same Download PDF

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Publication number
KR101561043B1
KR101561043B1 KR1020150065790A KR20150065790A KR101561043B1 KR 101561043 B1 KR101561043 B1 KR 101561043B1 KR 1020150065790 A KR1020150065790 A KR 1020150065790A KR 20150065790 A KR20150065790 A KR 20150065790A KR 101561043 B1 KR101561043 B1 KR 101561043B1
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KR
South Korea
Prior art keywords
plate
fixing
compression
girder
compressed
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KR1020150065790A
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Korean (ko)
Inventor
김찬녕
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(주)비티엠이엔씨
김찬녕
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

Abstract

The present invention relates to a composite pressing anchorage apparatus and a structure reinforcing method using the same, introducing a tensile stress to a compressed part (the upper part of a neutral axis) of a girder (prestressed concrete (PSC) girder) for a structure or the like and a tension part (a lower part of the neutral axis) of the girder for the structure, thereby reinforcing the girder for the structure. The composite pressing anchorage apparatus comprises: a girder fixing pate; a compression jack support plate; an anchorage plate center support device; composite concrete; an anchor bolt; a compression jack; a compression prestressed concrete (PC) steel, and a compression buckling prevention device. According to the present invention, buckling and distortion caused as an extended length of the compression PC steel becomes longer can be effectively prevented.

Description

Technical Field [0001] The present invention relates to a composite pressure-fixing apparatus and a structural member reinforcing method using the same,

The present invention relates to a composite pressure-fixing apparatus and a structural member reinforcing method using the same. More specifically, the present invention relates to a composite pressure-fixing apparatus for introducing a tensile stress to a compression portion (upper portion of a neutral shaft) of a structural girder (such as a PSC girder) to reinforce a structural girder by introducing a compressive stress to a tension portion The present invention relates to a method for reinforcing a structural member.

1A is a view showing the construction of a structural girder by a kind of bass treing method. In other words, it can be seen that the structural girder 10 is a PSC girder, and the tension member of the structural girder is fixed to the tension portion (under the neutral axis) by the pretension method or the like after the tension. Restrictions (strain limitations) Compressive stresses are accumulated in the construction girder compressive section (above the neutral axis) during construction and construction.

If the compressive stress exceeds the permissible compressive stress of the structural girder (the allowable compressive stress of the concrete in the case of the PSC girder), there arises a problem due to compression cracks and the like.

In order to offset the accumulated compressive stress, a compressed PC steel material 20 capable of introducing a tensile stress into the compressive structural girder is embedded in the upper portion of the structural girder by using a sheath 21, The grooves 30 and the hydraulic jack receiving grooves 40 are formed so that the ends of the compressed PC steel 20 are arranged to pass through the fixing nut receiving grooves 30 and the hydraulic jack receiving grooves 40.

The compressed PC steel material 20 is compressed using the hydraulic jack not shown in the hydraulic jack receiving groove 40 and the compressed PC steel material 20 subjected to the compressive stress is fixed to the fixing plate 50 in the fixing nut receiving groove 30, And fixing nuts 60 are used.

As the compressive stress applied to the compressive PC steel 20 is restrained, a tensile stress is generated on the upper side of the structural girder 10 by the reaction force, thereby canceling the accumulated compressive stress. Thus, It becomes possible to construct and construct a structural girder.

Although the fixing nut receiving groove 30 and the hydraulic jack receiving groove 40 cause a sectional damage of the structural girder, they are formed because the compressed PC steel 20 can be embedded in the structural girder, So that buckling and twisting do not occur, thereby making it possible to more reliably introduce a tensile stress.

However, in order to use the compressed PC steel 20 to reinforce the existing structural girder, the fixing nut receiving groove 30 and the hydraulic jack receiving groove 40 may be formed on the structural girder or the compressed PC steel 20 may be formed on the existing structural girder 20. [ It is very inefficient and practically impossible.

A structural girder (Patent No. 1356675) using a pressurized fixing system is introduced.

1B, the fixing plate 11 is welded and fixed to the upper surface of the upper flange of the steel plate girder (structural girder) 10, and a compressive stress is introduced into the compressed PC steel 20 by using a hydraulic jack The fixing nuts 30 are fixed to the fixing plate 11.

That is, depending on the structural girder, it can be seen that the compression PC steel material 20 can not be buried in the inside of the structure girder, which means that the compressed PC steel material 20 is installed outside the structure girder have.

However, such a method has a problem that it is very difficult to introduce accurate compressive stress because compressive stress acts on the compressed PC steel 20, so that buckling and twisting act.

Therefore, in case of using compression PC steels to reinforce existing structural girders, it is necessary to use any pressure fixing device to apply necessary compressive stress and how to prevent buckling distortion in compression PC steel Is a very important issue.

The present invention provides a method of reinforcing a structural girder using a pressurizing fixation apparatus, wherein a tensile stress is introduced into a structural girder compression unit so that a compressive stress can be naturally introduced into a structural girder tension unit, Which can be easily fixed integrally at both ends of the structural girder compression section and can effectively prevent buckling and warping as the extension length of the compressed PC steel is increased, and a composite pressure- And to provide a structural member reinforcement method.

The present invention

First, adopting the method of introducing compressive prestress by using a tension material under the neutral axis of the structural member (structural girder, structural column) introduces compressive stress to the tension member above the neutral axis of the structural member instead of accumulating compressive prestress in the structural member. So that tensile stress is generated, and compressive stress is introduced into the lower portion of the neutral shaft.

This is to prevent the accumulation of compressive stress in the structural member while reinforcing the insufficient compressive stress of the lower portion of the neutral axis of the existing structural member.

Second, when installing the compression PC steel on the neutral axis of the structural member, if the extension length becomes large, buckling and twisting become a problem when introducing compressive stress. Therefore, a compression buckling prevention device by clamping action And the compressed PC steel can be restrained in the middle by using a cross beam installed on the existing structural member.

Thirdly, according to the present invention, the compression fixing device is basically fixed to the structural member by using the anchor bolts, but the compression fixing device effectively disperses the reaction force when the compression stress is introduced by the hydraulic jack, thereby reducing the shear force imposed on the anchor bolt, Compression means) is effectively transferred to the compressed PC steel.

In order to achieve this, the compression fixing apparatus is configured such that the middle plate of the fixing plate is installed between the two fixing plates, and the middle plate of the fixing plate is restrained by synthetic concrete (synthetic pressure fixing device) so as to optimize the structural function of the compression fixing device.

In the compression fixing device according to the present invention, the compressive stress by the compression means such as the hydraulic jack is effectively transmitted to the compressed PC steel, and the number of the anchor bolts for fixing the compression fixing device to the structural member (structural girder, structural column) It is possible to reinforce the structural member (structural girder, structural column) while minimizing damage to the structural member.

In addition, the compressed PC steel uses a structural high-strength steel rod. As the extension length becomes longer, it is necessary to use a material having a large cross-sectional area due to buckling and twisting due to compressive stress. However, the present invention uses a compression buckling prevention device by a clamping action, So that efficient and economical utilization of the steel becomes possible.

In addition, the compression-fixing apparatus is capable of effectively introducing compressive stress into the compression PC steel, and is constructed so as not to require more anchor bolts in the structural member (structural girder, structural column), thereby reinforcing the structural girder more effectively .

Fig. 1A is a view showing the construction of a structural girder by a conventional bass-treing method,
Fig. 1B is a structural diagram of a reinforcement device provided on a structural girder which is a conventional steel plate girder;
FIG. 2A is a structural perspective view of a composite pressure-
FIG. 2B is an installation perspective view of the composite pressure-
FIG. 3A is an exemplary view of a fixing plate intermediate support of the present invention,
FIG. 3B is an installation view of the compression buckling prevention device of the present invention,
Figs. 4A, 4B and 4C are views showing an example of the installation of the composite pressure-fixing apparatus of the present invention,
5A and 5B are a flow chart for reinforcing the structural member using the composite pressure-fixing apparatus of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Synthetic pressure fixing device (100) of the present invention]

FIG. 2A is a perspective view of the composite pressure-fixing apparatus 100 of the present invention, and FIG. 2B is an installation perspective view of the composite pressure-fixing apparatus 100. FIG.

The synthetic pressure fixing apparatus 100 includes a girder fixing plate 110, a compression jack supporting plate 120, a fixing plate 130, a fixing plate intermediate support 140, a synthetic concrete 150, an anchor bolts 160, a compression jack 170, a compression PC steel 180, and a compression buckling prevention device 190.

The composite pressure-fixing apparatus 100 includes a compression jack (hydraulic jack) 170 housed inside thereof, and is installed so as to penetrate the compressed PC steel material 180, and is fixed to the structural girder using an anchor bolt, The fixing girder fixing plate 110, the compression jack supporting plate 120, the fixing plate 130 and the fixing plate middle supporting plate 140 are integrated with each other to disperse the stress concentration due to the fixing on the compressed PC steel member 180 do.

First, the girder fixing plate 110 is a member for fixing the composite pressure fixing device 100 to the structural girder 200a. The compression jack support plate 120, the fixing plate 130 and the fixing plate intermediate support plate 140 are integrally formed on the girder fixing plate 110 and the girder fixing plate 110 is fixed to the structural girder 200a by anchor bolts Fixing device 100 is fixed to the structural girder 200a by fixing the composite pressure-fixing device 100 to the structural girder 200a. Accordingly, a plurality of anchor holes 111 are formed in the girder fixing plate 110.

In this case, the diameter and the number of the anchor bolts 160 are determined according to the size and installation position of the apparatus 100. When the number of the anchor bolts is increased, An anchor bolt is installed on the assumption that the synthetic pressure fixing device 100 can be stably fixed to the structural girder 200a since the perforation hole forming work for installing the girder 200a is increased and the structural girder is damaged. It is possible to maximize the workability and the reinforcing effect of the structural girder in the installation of the synthetic pressure-fixing apparatus 100. [

The composite pressure fixing device 100 is installed in the form of being supported by the beams 210 and 211 of the structural girder 200a and the stress acting on the composite pressure fixing device 100 is applied to the composite pressure- 100).

The compression jack support plate 120 is installed on the girder fixing plate 110 and is formed on the end of the girder fixing plate in the form of a vertical plate so as to be in contact with the ribs 211 of the structural girder 200a, And a pair of intermediate compression book supporting plates 122 spaced apart from each other and horizontally extending from one side of the end compressing jack supporting plate 121 so as to receive the compression jacks 170 therein.

In order to ensure a sufficient contact area with the cross beams 210, the end compressing jack supporting plate 121 is formed on one side of the compression jack supporting plate 120 in the form of a vertical plate having the same width as the width of the girder fixing plate 110, And an anchor bolt 160 is used to fix the cross bar 211 to the cross bar 211.

The end of the compression jack 170 is supported on the inner side surface of the end compressing jack support plate 121 so that the reaction force R due to the operation of the compression jack 170 is obtained by using the cross beam 211 of the structural girder 200a. Is generated by the compression jack support plate 120.

The intermediate compression jack support plate 122 further comprises a pair of vertical plates extending horizontally from one side of the end compression jack support plate 121 to compress between the end compression jack support plate 121 and the intermediate compression jack support plate 122 So that it is possible to secure the space S1 in which the jack 170 is accommodated.

The space in which the compression jacks 170 are received is formed to be spaced apart from both the intermediate compression jack support plates 122 to accommodate the compression jacks and the intermediate compression jack support plates 122 are formed on the end compression jack support plates 121 And it is located at the central portion of one side surface.

As described later, when the tensile stress due to the fixation of the compressed PC steel member 180 is transmitted through the fusing plate 130, the tensile stress is transmitted to the beam 211 via the girder fixing plate 110.

The thickness of the second fusing plate 132 to which the compressed PC steel 180 is directly fixed is preferably larger than the thickness of the first fusing plate 131.

The fixing plate 130 is installed on the girder fixing plate 110 and includes a first fixing plate 131 installed to contact the end face of both intermediate compression jack supporting plates 122 and a second fixing plate 131 horizontally And a second fixing plate 132 formed at a spaced apart position.

The first fixing plate 131 and the second fixing plate 132 are formed with through holes 133 at the center so that the compressed PC steel 180 can be penetrated.

At this time, the fixing plate 130 is formed in the shape of a vertical plate having a width larger than the separation distance between the intermediate compression jack supporting plates 122, and a fixing plate 130 is formed between the first fixing plate 131 and the second fixing plate 132, A middle support portion 140 is installed.

At this time, the compressed PC steel member 180 is fixed to the second fusing plate 132. The tensile stress generated at this time is transmitted to the second fusing plate 132, And is transmitted to the fixing plate 131 so that the tensile stress is dispersed.

The cross section of the girder fixing plate 110, the compression jack supporting plate 120 and the fixing plate 130 can be minimized, thereby making it possible to manufacture an economical synthetic pressure fixing apparatus 100 and to minimize the number of the anchor bolts to be installed It is possible to minimize the damage of the structural girder and to reinforce the structural girder by introducing a larger tensile stress.

The intermediate plate 140 of the fixing plate is installed on the girder fixing plate 110 so that the end face of the fixing plate 130 contacts between the fixing plates 130 to transfer the intermediate fixing plate 140 from the second fixing plate to the first fixing plate, As shown in FIG. 3, the circular pipe 141 having the same diameter over an extended length, the tapered circular pipe 142 having the diameter varying according to the extended length, and the compressed PC steel 180 are connected to each other Shaped channel member 143 or the enlarged flange member 145 integrally formed at both ends of the circular pipe 141 and the circular pipe 141 can be used.

The circular tubes 141 and 142 are formed so as to extend outwardly from the inside between the fixing plates 13 in the case of the C-shaped channel member 143 while being located inside the fusing plates 130, It can be seen that application of the member 143 according to the size of the member 143 and support of tensile stress are more advantageous.

Further, the extension flange member 145 integrally formed at both ends of the circular tube 141 can have a larger cross-sectional area than the fusing plate, especially when the tensile stress is large, so that it can be effectively supported.

2B, the synthetic concrete 150 has a space S1 in which the compression jacks 170 are positioned between the intermediate compression jack support plates 122 on the girder fixing plate 110, The compression jack support plate 120 and the fusing plate 130 except for the space S2 in which the compressed PC steel member 180 is accommodated by the first fixing plate 132 and the outer space S3 of the second fixing plate 132, , And a concrete having a predetermined thickness (T) in contact with the fixing plate intermediate support plate (140).

The tension force transmitted to the girder fixing plate 110, the compression jack supporting plate 120, the fixing plate 130 and the fixing plate intermediate support 140 is burdened together to produce a more optimized composite pressure fixing apparatus 100 .

In addition, the synthetic concrete 150 is formed on the girder fixing plate 110 and is extended to be combined with the structural girder 200a according to FIG. 2b, thereby making it possible to more firmly fix the composite pressure fixing device 100, The number of the anchor bolts 160 for fixing the pressure fixing device 100 to the structural girder 200a can be minimized.

The anchor bolt 160 serves to fix the composite pressure-fixing device 100 to the structural girder 200a.

In order to effectively introduce compressive stress into the compressed PC steel, the compression and fixing device must be firmly fixed to the structural girder, and a steel material So that the compression-fixing device can sufficiently support the compressive stress caused by the hydraulic jack.

However, in the conventional method of fixing the compression fixing device to the structural girder surface by using the anchor bolt, it is difficult to assume that the compression fixing device is completely integrated into the structural girder. Increasing the number of the anchor bolt Which is undesirable.

The anchor bolts 160 are fixed to the end compressing jack supporting plate 121 and the girder fixing plate 110 in the case of FIG. 2A in order to resist the shear stress acting on the anchor bolts due to the tensile stress. And a bolt hole is formed in the structural girder 200a for installing the anchor bolt.

As described above, according to the present invention, the shear stress to be borne by the anchor bolt can be reduced by the synthetic concrete 150, the fixing plate 130, and the fixing plate intermediate support 140, The diameter can be minimized, and a relatively larger tensile stress can be introduced, which is advantageous in reinforcing the structural girder.

The compression jack 170 is a jack that is accommodated in the space S1 between the fixing plates 130 via the through holes of the fixing plate 130. The compression jack 170 is a synthetic jacket One end of the fixing device 100 is fixedly fixed to one side of the fixing device 100, and the other end of the fixing device 100 is extended to the other side of the fixing device 100 so that compression stress is introduced by the operation of the compression jack 170.

Accordingly, when the compression PC steel member 180 has an elastic restoring force at an allowable stress or less, when the fixing PCM steel member 180 is fixed by the fixing nut 171 in the second fixing plate 132, a tensile stress is applied to the synthetic pressure fixing apparatus 100 Compressive stress is transmitted to the lower portion of the neutral axis of the structural girder 200a (bending moment M acts), so that the structural girder can be reinforced.

At this time, depending on the magnitude of the compressive stress, the compressed PC steel member 180 should be prevented from buckling and twisting so that accurate tensile stress can be introduced. Particularly, in the case where the distance between both end portions of the girder for the yard use is large (the structural girder having a large extension length, etc.), the extension length of the compressed PC steel member 180 must be increased, and the compressed PC steel member 180 is buckled and twisted There is no choice but to grow.

In order to prevent this, the compressed PC steel member 180 should have a cross sectional area of more than a certain degree according to the compressive stress to be introduced. However, since the high strength steel bar must be used, economical efficiency is lowered.

Accordingly, the present invention provides a compression buckling prevention device 190 by a clamping action to the structural girder 200a.

That is, the compression buckling prevention apparatus 190 is configured such that the body portion 191 surrounds the compressed PC steel 180 as shown in FIG. 3B, and both ends are fixed to the structural girder 200a by the fixing bolts 194 And the flange portion 192 is included.

The compression buckling prevention device 190 has a function of primarily stably mounting the compressed PC steel member 180 on the structural girder 200a and a buckling and warping prevention function by positional restraint.

A bearing 193 is provided between the body 191 and the compressed PC steel 180 so that the compressed PC steel 180 is not completely restrained by the compression buckling preventing device 190, The compression stress acting on the compression-buckling prevention device 190 while being prevented from being completely restrained is transmitted to the compression-buckling prevention device 190 so as not to be lost.

[Installed Structural Member of Synthetic Pressure-Fixing Apparatus 100 of the Present Invention]

FIGS. 4A, 4B and 4C show a state in which the composite pressure-fixing apparatus 100 of the present invention is installed on the structural girder 200a and the structural column 200b. Herein, the structural girder 200a and the structural column 200b will be referred to as a structural member 200. [

4A shows a state in which the composite pressure-fixing apparatus 100 of the present invention is installed on a structural girder 200a as an I-type PSC girder, FIG. 4B shows a state in which a structural pressure- FIG. 4C shows a state in which the apparatus 100 is installed, and FIG. 4C shows a state in which the composite pressure-fixing apparatus 100 of the present invention is installed on the structural column 200b, which is the base of the bridge.

Referring to FIG. 4A, it can be seen that the structural girder 200a, which is an I-type PSC girder, is integrally formed with the slab 300.

It is to be noted that the structural girder 200a has the ribs 210 formed between both ends and both ends thereof.

In order to reinforce the structural girder 200a, it can be seen that the synthetic pressure fixing device 100 previously shown on the neutral axis is fixed using the anchor bolt 160 and the synthetic concrete 150. [

That is, the anchor bolt 160 is used to fasten the girder fixing plate 110 of the composite pressure fixing device 100 and the end compression jack support plate 121 constituting the compression jack support plate 120 to the abdomen of the structural girder 200a The composite pressure fixing device 100 is fixed to the structural girder 200a using the synthetic concrete 150 by fixing the end side beam 211 with the anchor bolts 160. [

The compressed PC steel member 180 is installed on the structural girder 200a by using the compression buckling prevention device 190 as described above and one end of the synthetic PC steel member 180 is fixed to both ends of the structural girder 200a And the other end of the synthetic pressure fixing device is installed so as to extend through the fixing plate and to extend into the space S1 formed by the pair of intermediate compression book supporting plates 122. [

Also, it can be seen that the compressed PC steel member 180 is installed to penetrate the intermediate beam 212 formed on the structural girder 200a.

A compression jack 170 is installed to be inserted into the space S1 so that the compressed PC steel 180 is compressed and fixed to the second fixing plate 132 by a fixing nut 171 to form a compressed PC steel 180 Is generated on the neutral axis of the structural girder 200a so that compressive stress is introduced into the lower portion of the neutral axis of the structural girder so that the structural girder 200a is reinforced.

Referring to FIG. 4B, it can be seen that the composite pressure-fixing apparatus 100 of the present invention is installed inside the structural girder 200a, which is a U-shaped PSC box girder.

In this case, tensile stress due to the compressed PC steel material 180 is applied to the structural girder 200a by using the compressed PC steel material 180 in the same manner, except that the intermediate partition wall of the U-shaped PSC box girder is used in contrast to the I- So that the structural girder 200a is reinforced by introducing compressive stress to the lower portion of the neutral axis of the structural girder.

4C, it can be seen that the composite pressure-fixing apparatus 100 of the present invention is installed on the structural column 200b, which is a pillar of a bridge pier.

That is, the synthetic pressure fixing apparatus 100 is provided with the synthetic pressure fixing apparatus 100 on the surface of the column portion at the connection portion between the coping portion and the base portion of the structural column 200b, So that the stress is strengthened to resist the axial force acting on the structural column 200b.

At this time, it can be seen that reinforcement of the structural column 200b further forms the coated concrete 210b so that the composite pressure-fixing device 100 is buried. At this time, the coated concrete 210b is exposed so that the composite pressure- It is preferable to form the opening. Furthermore, after the synthetic pressure fixing device 100 excluding the synthetic concrete 150 is installed, the synthetic concrete may be formed together with the covered concrete 210b.

As a result, it can be seen that the composite pressure-fixing apparatus 100 according to the present invention can be installed both on the structural girder 200a as a flexible member and on the structural column 200b as a shaft member.

[Method of Reinforcing Structural Member (200) Using Synthetic Pressure-Fixing Apparatus (100) of the Present Invention)

Figs. 5A and 5B show a structural member 200 reinforcing method using the composite pressure-fixing apparatus 100 according to the present invention, in the order of the structural girder 200a.

This structural member 200 reinforcement method is characterized by the optimization of the installation number of the anchor bolts 160 and the integration of the compression device and the structural member by the formation of the synthetic concrete 150.

First, as shown in FIG. 5A, only the synthetic pressure fixing apparatus 100 excluding the synthetic concrete is fixed by using the end rope 211 and the anchor bolt 160 on the abdomen upper end of the structural girder 200a, .

Next, as shown in FIG. 5B, the synthetic concrete 150 is integrated with the structural girder 200a to be synthesized.

A compression PC steel member 180 is installed between the two compression pressure fixing devices 100 while one end is connected to the end compression jack support plate 121 of the synthetic pressure fixing device 100, Is extended in the space S1 formed by the pair of intermediate compaction supporting plates 122, and the other end is fixedly fixed with a fixing nut.

At this time, the compressed PC steel member 180 is installed to penetrate the intermediate beam 212.

5B, the compressed PC steel 180 is compressed by the compression jack 170 and then fixed to the second fixing plate 132 of the synthetic pressure fixing device 100 using a fixing nut 171, Thereby reinforcing the girder 200a.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Synthetic pressure fixing device
110: girder fixing plate 111: anchor hole
120: compression jack support plate 121: end compression jack support plate
122: intermediate compression book supporting plate 123: anchor hole
130: fixing plate 131: first fixing plate
132: second fixing plate 133: through hole
140: Fixing plate intermediate zone 141: Circular tube
142: tapered circular tube 143: U-shaped channel member
150: Synthetic concrete 160: Anchor bolt
170: compression jack 171: fixing nut
180: Compressed PC steel 190: Compression buckling prevention device
191: body portion 192: flange portion
193: Bearing 194: Fixing bolt
200: structural member
200a: Structural girder 200b: Structural column

Claims (7)

An end compression jack support plate 121 installed on the girder fixing plate 110 fixed to the structural member by the anchor bolts 160 and formed in the form of a vertical plate at the end of the girder fixing plate to be in contact with the ribs 211 of the structural member ); A compression jack support plate 120 comprising a pair of intermediate compression book support plates 122 spaced apart from one another so as to receive compression jacks 170 in the inner space S1 and extending horizontally from one side of the end compression jack support plate 121, );
The first and second intermediate compression jack supporting plates 122 and 124 are installed on the girder fixing plate 110 and are disposed so as to be perpendicular to the end surfaces of the intermediate compression jack supporting plates 122, A fixing plate 131; And a second fusing plate 132 formed at a position horizontally spaced from the first fusing plate 131 and having a through hole 133 formed through the compressed PC steel member 180, );
A fusing plate intermediate support 140 installed on the girder fixing plate 110 and disposed between the fusing plates 130 so as to be in contact with the end faces so as to transmit tensile stress from the second fusing plate to the first fusing plate; And
A space S1 in which the compression jack 170 is located and a space S2 in which the compressed PC steel material 180 is accommodated by the fixing plate intermediate support 140 between the both intermediate compression jack support plates 122, The fixing plate 130 and the fixing plate intermediate stopper 140 except for the outer space S3 of the fixing plate 132 to be in contact with the fixing plate 110, And a synthetic concrete (150) that fixes the synthetic pressurizing device to the structural member together with the anchor bolt as the formed concrete. The method according to claim 1,
The compressed PC steel member 180 is fixed by the fixing nut 171 in the second fixing plate 132 so that tensile stress is applied to the lower portion of the neutral axis of the structural member 200 through the synthetic pressure fixing device 100, To thereby transfer the composite pressure-fixing device. 3. The method of claim 2,
A compression buckling prevention device 190 (190) including a flange portion (192) whose body portion (191) surrounds the compressed PC steel (180) and whose both ends are fixed to the structural girder ) So as to prevent buckling and distortion of the compressed PC steel (180) to the structural member (200). The method of claim 3,
A bearing 193 is further provided between the body 191 and the compressed PC steel 180 so that the compressed PC steel 180 is not completely restrained by the compression buckling prevention device 190, Is prevented from being completely restrained by the compression buckling prevention device (190) and transmitted to the compression buckling prevention device (190) so as not to be lost. The method according to claim 1,
The fusing plate intermediate support (140)
Shaped channel member 143 spaced apart from each other so that the circular pipe 141, the tapered circular pipe 142 or the compressed PC steel member 180 can pass through the fusing plate 130, The member (143) is formed to extend outwardly from the inside between the fixing plates (130) so that application of the C-shaped channel member (143) and support of tensile stress are further advantageous. (a) fixing the synthetic pressure fixing device 100 to an existing structural member 200 using an anchor bolt 160;
(b) integrating the synthetic pressure-fixing device 100 with the structural member 200 by using the synthetic concrete 150;
(c) A compressed PC steel member 180 is installed between the two positive pressure fixing apparatuses 100 of the step (b), and one end of the compressed PC steel member 180 is pressed against the end compression jack support plate 121 of the composite pressure- Extending in the space S1 by the book supporting plate 122 and fixing and fixing the other end with a fixing nut;
(d) The compression jack 170 accommodated in the space S1 is operated to compress the compressed PC steel material 180, and a fixing nut 171 is attached to the second fusing plate 132 of the composite pressure-fixing device 100 To reinforce the structural member (200)
The synthetic pressure fixing device 100 of the step (a) is installed on a girder fixing plate 110 fixed to the structural member 200 by an anchor bolt 160, and is formed in the shape of a vertical plate at the end of the girder fixing plate An end compression jack support plate 121 installed to abut the structural member 200 including the end rope 111; A compression jack support plate 120 comprising a pair of intermediate compression book support plates 122 spaced apart from one another so as to receive compression jacks 170 in the inner space S1 and extending horizontally from one side of the end compression jack support plate 121, ); The first and second intermediate compression jack supporting plates 122 and 124 are installed on the girder fixing plate 110 and are disposed so as to be perpendicular to the end surfaces of the intermediate compression jack supporting plates 122, A fixing plate 131; And a second fusing plate 132 formed at a position horizontally spaced from the first fusing plate 131 and having a through hole 133 formed through the compressed PC steel member 180, ); A fusing plate intermediate support 140 installed on the girder fixing plate 110 to contact the end faces of the fusing plates 130 and to transmit tensile stress from the second fusing plate to the first fusing plate; And
A space S1 in which the compression jack 170 is located and a space S2 in which the compressed PC steel material 180 is accommodated by the fixing plate intermediate support 140 between the both intermediate compression jack support plates 122, The fixing plate 130 and the fixing plate intermediate stopper 140 except for the outer space S3 of the fixing plate 132 to be in contact with the fixing plate 110, And a synthetic concrete (150) that fixes the synthetic pressurizing device to the structural member (200) together with the anchor bolt as the formed concrete. delete
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101660888B1 (en) * 2016-02-16 2016-09-29 (주)비티엠이엔씨 Girder with pressing embed ahchorage apparatus and the girder construction method therewith

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100719959B1 (en) * 2006-10-26 2007-05-18 한국건설기술연구원 Structure reinforcing apparatus and method using stressing apparatus for structure reinforcement
KR101356675B1 (en) * 2011-06-30 2014-01-28 김찬녕 Structural girder using a loading anchor system for girder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100719959B1 (en) * 2006-10-26 2007-05-18 한국건설기술연구원 Structure reinforcing apparatus and method using stressing apparatus for structure reinforcement
KR101356675B1 (en) * 2011-06-30 2014-01-28 김찬녕 Structural girder using a loading anchor system for girder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101660888B1 (en) * 2016-02-16 2016-09-29 (주)비티엠이엔씨 Girder with pressing embed ahchorage apparatus and the girder construction method therewith

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