KR101787440B1 - Rigidity reinforcement device for beam with web openings - Google Patents
Rigidity reinforcement device for beam with web openings Download PDFInfo
- Publication number
- KR101787440B1 KR101787440B1 KR1020150169121A KR20150169121A KR101787440B1 KR 101787440 B1 KR101787440 B1 KR 101787440B1 KR 1020150169121 A KR1020150169121 A KR 1020150169121A KR 20150169121 A KR20150169121 A KR 20150169121A KR 101787440 B1 KR101787440 B1 KR 101787440B1
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- South Korea
- Prior art keywords
- sleeve
- shear
- spiral
- helical
- ring
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The present invention relates to a rigid reinforcing device for informing. The present invention relates to a pneumatic tire which is installed in a concrete beam penetrating through a hole in a width direction and is continuously installed along the longitudinal direction of the pore so as to prevent exposure to the outside of the beam, And a shear reinforcement made of a rigid material that continuously provides shear resistance along the direction of the shear reinforcement. In the present invention, the shear stiffener continuously provides shear resistance along the axial direction of the hole.
Description
BACKGROUND OF THE
It is a horizontal structure member which is connected to a column of a vertical member and supports a load. It receives a force perpendicular to the axis and mainly supports a load by bending and shearing. According to such a supporting method, a simple beam at both ends, a continuous beam with a fulcrum in the middle, a germabar with a pin connected at the middle of the continuous beam, a cantilever beam with both ends fixed and high- .
The above-mentioned view is usually installed at the lower part of the slab as shown in Fig. As shown in FIG. 1 (b), the beam CB is provided with various pipes (for example, air conditioning duct, electricity, and water supply and drainage pipes). As shown in the drawing, the pipe P is installed in a bent state due to the beam CB, and protrudes to a lower portion of the beam CB. Therefore, the building can not reduce the weight of the bedding and the structure due to the projection thickness T of the pipe P projecting to the lower portion of the beam CB as shown in the figure.
In order to solve this problem, as shown in FIG. 2, a beam CB having a hole H formed thereon has been proposed. As shown in FIG. 2, the pipe P is inserted through the hole H through the beam CB. However, the beam CB having such a hole H causes a structural problem such as a reduction in strength and stiffness and deflection due to a loss cross-sectional area corresponding to the size of the hole H. Therefore, the beam CB having the hole H can form almost only one or two holes H as shown in the drawing due to the structural limitations.
However, since the pipe P is composed of a plurality of pipes as shown in Figs. 1 and 2, only a part of the pipe P is installed in the hole H as shown in Fig. 2 (b). Accordingly, the remaining pipe P should be installed in a bent state at the lower part of the beam CB as shown in the figure. Therefore, the beam CB having the above-mentioned hole H can not reduce the weight of the stratified structure and the structure due to the projection thickness T of the pipe P because the pipe P protrudes further downward.
On the other hand, when the hole (H) is formed in the beam (CB), the beam is structurally weak to the shear force acting on the beam (CB) It is a losing situation.
On the other hand, as shown in Fig. 2, the beam CB is usually provided with a circular hollow pipe HP in the hole H. In the case where only the hollow pipe HP is provided and a rigid reinforcing member for reinforcing the sectional area of the loss due to the hole H is not provided, when the shearing force is applied, the beam CB is inclined as shown in FIG. 3 A shearing crack is generated across the approximate center of the hole H. Particularly, since there is no rigid reinforcing member as described above, such a beam CB has a problem that the concrete covering gradually spreads as shown by shear cracking, and thus the rigidity is further weakened.
In order to solve this problem, a patent registered in the Korean Intellectual Property Office (Registered No. 10-999410, Korea Institute of Construction Technology) has a structure in which a
On the other hand, in Japan, a technique of reinforcing the hole H of the beam CB by using the ring-
When the shear force is transferred to the beam CB, the above-mentioned reinforcing
However, as shown in FIG. 6, since the
On the other hand, a technique for coping with the above-described reinforcing
SUMMARY OF THE INVENTION It is an object of the present invention to provide a rigid reinforcing device for reinforcing a pierced portion of a beam formed with a hole.
In particular, it is an object of the present invention to provide a rigid reinforcing device for a pneumatic bolt capable of reinforcing a piercing portion against a shearing force by providing a shear resistance force along a longitudinal direction of a pipe body provided in a beam or a beam, to be.
It is another object of the present invention to provide a rigid reinforcing device for a legible bullet which can be fixed in a state of fitting a tube for providing a hole and can stand up by itself due to its structural characteristics.
According to an aspect of the present invention, there is provided a method of manufacturing a steel pipe, comprising the steps of: inserting the steel pipe into a concrete beam, the steel pipe being embedded in a concrete beam having through- And a shear reinforcement made of a rigid material continuously provided along the longitudinal direction of the holes to provide shear resistance.
For example, the shear stiffener is formed in a helical coil shape corresponding to the length of the holes and is provided along the axial direction of the holes. The shear stiffener provides a shear resistance against the shear force acting on the pierced portion of the beam, And a spiral sleeve for suppressing shear cracking of the perforated portion.
The spiral sleeve may be formed of, for example, a spiral reinforcing bar formed in a helical coil shape or a FRP helical groove or a plastic helical groove made of FRP or plastic formed in a helical coil shape.
The shear stiffener may further include a support for supporting a lower portion of the spiral sleeve to stand the spiral sleeve.
For example, the support may include a prismatic bend extending in a staggered fashion from the spiral sleeve and formed into a spiral shape with the spiral sleeve, and may be formed by bending a triangular or octagonal bending root.
Alternatively, the support may be, for example, horizontal roots horizontally provided on at least one of both ends of the spiral sleeve.
Alternatively, the support may be formed of, for example, a square ring connected to at least one of both sides of the spiral sleeve and formed of any one of triangular to octagonal.
The prismatic ring may extend from at least one of both ends of the spiral sleeve and be permanently connected to the spiral sleeve.
Alternatively, the prismatic ring may be detachably connected to at least one of the two sides of the spiral sleeve by a connector separated from the spiral sleeve.
The connector may include a connection block formed on both sides of the outer circumferential surface of the helical sleeve and an outer circumferential surface of the prismatic ring so that the helical sleeve and the prismatic sleeve are wound on the outer circumferential surface of the helical sleeve, And at least one of a band clamp or a wire for connecting the ring.
When the spiral sleeve has a circular shape and is formed in a spiral shape, the support member may be extended from at least one of both ends of the spiral sleeve to be permanently connected to the spiral sleeve, or separated from the spiral sleeve, And a rectangular ring detachably connected to at least one of both sides of the helical sleeve and having a triangular to octagonal shape.
At this time, the spiral sleeve may be configured to have a diameter corresponding to the width of the prismatic ring.
The spiral sleeve is formed to have a diameter corresponding to the width of the rectangular ring when the spiral sleeve is formed to have a diameter smaller than the width of the rectangular ring and is provided on at least one of both ends, And a diameter ring detachably connected to the square ring.
In this case, for example, the connector may include a connection block formed on both sides of the outer circumferential surface of the diameter ring and an outer circumferential surface of the prism ring, And at least one of a band clamp and a wire connecting the rectangular ring.
The present invention is further characterized in that it is necessary to further include a pillar inserted into the spiral sleeve to form a module together with the shear stiffener and installed in a penetrating manner in the beam and providing a hollow capable of being tubed in the hollow have.
The spiral sleeve is preferably formed in a spiral shape having a diameter corresponding to the outer circumferential surface of the pipe tube so that the pipe tube is constrained.
The spiral sleeve may be formed in a spiral shape having at least any one of a circular shape, a rhombus shape, or a polygonal shape of triangular to octagonal.
In the present invention as described above, since the shear reinforcement made of a rigid material continuously provides a shear resistance force along the axial direction of the holes or holes, shear resistance can be generated from the surface side of the beam to the inner center portion of the beam, Shear cracks can be suppressed to the maximum by the shear force, and cracks can be prevented from occurring even if shear cracks occur, and since the shear force transferred to the holes or holes is substantially imposed by the shear reinforcement, So that it can be prevented from proceeding through the center. Therefore, it is possible not only to prevent the strength and the stiffness from being deteriorated even if a large number of holes are formed, but also to prevent a structural problem such as deflection and the like, and as a result, the pipe can be penetrated through the hole, Can be reduced.
In particular, since the shear stiffener is formed of a helical sleeve having a helical coil shape, the helical sleeve can be easily inserted and fixed in the pipe, and the helical sleeve is formed into a spiral shape, so that the shear resistance can be continuously So that it is possible to protect the periphery of the pipe from the shear force along the axial direction of the hole or the pipe. That is, the pierced portion of the beam can be stably protected through the spiral sleeve of the shear reinforcement.
In addition, since the diameter of the helical sleeve corresponds to the outer circumferential surface of the tube, the tube can be stably and firmly fixed to the helical sleeve by interference fit, and in addition, the helical sleeve can be formed in a round shape, a rhombic shape, The degree of freedom and convenience of the image can be improved.
In addition, when the spiral sleeve is provided with a support and the spiral sleeve is supported by the support, not only the spiral sleeve can be easily raised, but also the spiral sleeve and the support can be constituted by one module. If the support is composed of a prismatic bend extending alternately with the spiral sleeve, the support can be molded together when the spiral sleeve is formed. Alternatively, the support can be formed of horizontal roots horizontally provided at the end of the spiral sleeve The support can be easily and easily implemented.
In addition, when the supporting rods are constituted by rectangular rings connected to the end sides of the spiral sleeves, the rectangular rods are constructed in a simple structure, so that the supporting rods can be easily manufactured, and further, the rectangular rings are formed on the ends of the spiral sleeves, It is possible to reduce the manufacturing cost since the prismatic ring can be molded together when the spiral sleeve is formed. Alternatively, when the prismatic ring is detachably coupled to the end side of the spiral sleeve by the connector, It can be applied to spiral sleeves.
In addition, when the connector is formed as a connection block, the spiral sleeve and the square ring can be fixed to the both sides of the connection block so that the spiral sleeve and the rectangular ring can be easily connected. Alternatively, The connector can be easily provided.
On the other hand, when a circular spiral sleeve having a diameter smaller than the diameter of the square ring is constituted, the spiral sleeve is connected to the square ring through the diameter ring and the connector corresponding to the diameter of the square ring, The diameter ring can be easily connected to the square ring, and in addition, the diameter ring can be easily manufactured when the diameter ring ring is molded together when the spiral sleeve is molded. Alternatively, when the diameter ring is formed separately from the spiral sleeve, Can be connected to the square ring.
On the other hand, if shear stiffener alone is used in the absence of a pipe, it is possible to provide shear resistance along the longitudinal direction of the hole through the shear stiffener, thereby preventing cracks in the pierced portion of the beam, In addition, when the shear stiffener is formed of a spiral sleeve having a helical coil shape, it is possible to easily manufacture the shear stiffener with a structure corresponding to the length of the hole. Further, when the spiral sleeve is provided with the above- It is possible to easily stand up the inside of the formwork.
1 shows a part of a general beam;
FIG. 2 is a view showing a general information publication; FIG.
3 is a perspective view showing shear cracks in the guide shown in Fig. 2; Fig.
FIG. 4 is a perspective view showing members applied to a conventional art; FIG.
Fig. 5 is a cross-sectional view of the publication by the member of Fig. 4;
6 is a front view of a conventional reinforcing steel bar;
7 is a cross-sectional view of a conventional steel reinforcing bar shown in FIG. 6;
8 is a cross-sectional view of another general publication;
FIG. 9 is a perspective view showing a configuration of a rigid reinforcing device for a known information according to an embodiment of the present invention; FIG.
10 is a perspective view of the tube shown in FIG. 9;
FIG. 11 is a view showing a shear stiffener according to the first embodiment shown in FIG. 9; FIG.
FIG. 12 is a perspective view of the pipe tube and shear stiffener shown in FIG. 9; FIG.
13 is a view showing a second embodiment of the shear stiffener shown in Fig. 9;
FIG. 14 is a view showing a third embodiment of the shear stiffener shown in FIG. 9; FIG.
FIG. 15 is a view showing a fourth embodiment of the shear stiffener shown in FIG. 9; FIG.
FIG. 16 is a view showing a fifth embodiment of the shear stiffener shown in FIG. 9; FIG.
FIG. 17 is a view showing a sixth embodiment of the shear stiffener shown in FIG. 9; FIG.
Fig. 18 is a front view showing the action of the shear stiffener shown in Fig. 9; Fig.
FIG. 19 is a front view showing a shear crack of the pipe tube shown in FIG. 9; FIG. And
Fig. 20 is a sectional view of a known publication showing the application state of the reinforcing module shown in Fig. 9; Fig.
Hereinafter, a rigid reinforcing device for a known information according to an embodiment of the present invention will be described with reference to the accompanying drawings.
9 and 20, the rigid reinforcing device for a public information according to the embodiment of the present invention may be constituted by the
As shown in FIG. 10, the
The
The
As shown in FIG. 12, the
The
The
When the large diameter portion and the small diameter portion are provided on one side and the other side of the
It is preferable that the
On the other hand, the
On the other hand, the
The supporting base can be constituted by, for example, a prismatic
The
Unlike the above, the support rods may be configured as
Alternatively, the support may comprise a
The
However, the
The connector may comprise, for example, a
The connector may be constituted by a conventional band clamp or a wire not shown, unlike the above. The band clamp and the wire are wound on the outer circumferential surface of the
Here, the
14, when the
On the other hand, when the separable
The diameter ring R is formed to have the same diameter as the diameter D corresponding to the width of the
The bulging ring R may be manufactured separately from the
As shown in FIG. 12, the rigid reinforcing
When the
The
The
The
To explain this operation easily, the shearing force F is transferred and dispersed along the shape of the
In addition, the rigid reinforcing
As shown in Fig. 19, when the shear cracks are generated finely at the periphery (side) of the hole H, only the surface cracking of the concrete coating is generated. This is because the
As a result, in the case of the beam CB having the hole H, the crack due to the shearing force passes through the center of the hole H and proceeds to the opposite side of the hole H when the rigid reinforcing
16, when the
When the diameter of the
On the other hand, the
The
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to be illustrative of the present invention and are not intended to limit the scope of the present invention. Change, partial omission, or supplement). In addition, the above-described embodiments may combine some or many of the features with each other. Therefore, the structure and configuration of each component shown in the embodiments of the present invention can be implemented by modifications or combinations, and it goes without saying that modifications and combinations of these structures and configurations fall within the scope of the appended claims of the present invention.
50: rigidity reinforcing device 51:
52:
52c:
52e: square ring 60: connecting block
61: fitting groove
Claims (11)
Wherein the shear reinforcement comprises:
A shear resistance force is applied to a shear force acting on the pierced portion of the beam and a shear force is applied to the pierced portion of the beam, And a spiral sleeve,
Wherein the shear reinforcement comprises:
And a support table for supporting the lower portion of the spiral sleeve to stand the spiral sleeve,
[0028]
And a rectangular ring connected to at least one of both sides of the helical sleeve and formed of any one of triangular to octagonal shapes,
Wherein the prismatic ring comprises:
Wherein the spiral sleeve is separated from the spiral sleeve and is detachably connected to at least one of the sides of the spiral sleeve by a connector,
Wherein the connector comprises:
A connecting block formed on both sides of the outer circumferential surface of the helical sleeve and the fitting groove fitted in the outer circumferential surface of the prismatic ring,
Wherein the prismatic ring comprises:
And has a diameter corresponding to the diameter of the spiral sleeve or larger than a diameter of the spiral sleeve,
The connecting block includes:
And the outer circumferential surface of the helical sleeve and the outer circumferential surface of the prismatic ring are inevitably interference fit on both sides of the fitting groove.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150169121A KR101787440B1 (en) | 2015-11-30 | 2015-11-30 | Rigidity reinforcement device for beam with web openings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150169121A KR101787440B1 (en) | 2015-11-30 | 2015-11-30 | Rigidity reinforcement device for beam with web openings |
Publications (2)
Publication Number | Publication Date |
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KR20170064114A KR20170064114A (en) | 2017-06-09 |
KR101787440B1 true KR101787440B1 (en) | 2017-10-24 |
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KR1020150169121A KR101787440B1 (en) | 2015-11-30 | 2015-11-30 | Rigidity reinforcement device for beam with web openings |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004068303A (en) * | 2002-08-02 | 2004-03-04 | Meiji Univ | Constituent and horizontal member of architectual civil engineering structure equipped with opening reinforcement structure |
JP2007277852A (en) * | 2006-04-04 | 2007-10-25 | Odakyu Construction Co Ltd | Opening part reinforcing bar installing method in reinforced concrete building |
JP2008050816A (en) * | 2006-08-23 | 2008-03-06 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Through hole reinforcing member and through hole reinforcing structure of reinforced concrete building using it |
-
2015
- 2015-11-30 KR KR1020150169121A patent/KR101787440B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004068303A (en) * | 2002-08-02 | 2004-03-04 | Meiji Univ | Constituent and horizontal member of architectual civil engineering structure equipped with opening reinforcement structure |
JP2007277852A (en) * | 2006-04-04 | 2007-10-25 | Odakyu Construction Co Ltd | Opening part reinforcing bar installing method in reinforced concrete building |
JP2008050816A (en) * | 2006-08-23 | 2008-03-06 | Kitakyushu Foundation For The Advancement Of Industry Science & Technology | Through hole reinforcing member and through hole reinforcing structure of reinforced concrete building using it |
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KR20170064114A (en) | 2017-06-09 |
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