KR20180014651A - Dowel bar assembly - Google Patents

Abstract

The present invention relates to a dowel bar assembly which is provided to correspond to differential settlement of a steel bar concrete structure, and is coupled to a cap member coupled to both sides of a bar member in particular, wherein the bar member is configured to be coupled to an insertion hole of the cap member while penetrating through the insertion hole such that problems related to widening of the cap member due to load during cement construction can be completely prevented. The dowel bar assembly comprises: the bar member; the cap member including a first cap coupled to one side of the bar member and a second cap coupled to the other side of the bar member; and a support member coupled to a lower portion of the cap member, wherein the first and second caps are provided with the insertion holes through which the bar member is inserted, and the bar member penetrates through the insertion hole to be coupled to the insertion hole.

Description

DOWEL BAR ASSEMBLY < RTI ID = 0.0 >

The present invention relates to a multi-well bar assembly for coping with uneven settlement of a reinforced concrete structure,

More particularly, the present invention relates to a bar member that is coupled to a cap member that is coupled to both sides of the bar member, and that the bar member is coupled while passing through the insertion hole of the cap member to completely prevent the cap members from being opened by a load It is about a multi-well assembly.

Generally, the Dowel Bar increases the normal stress during the uneven settlement of reinforced concrete structure, and it can be restored after uniformly changing in a certain direction at the time of contraction expansion displacement (horizontal displacement) , The carbon content is high, and therefore, it is excellent in strength. In recent construction, a round bar type dowel bar (bar member) is used in which more than 90% of the tear is treated.

These dowel bars are installed to remove the harmful elements on the pavement surface during the contraction of the cement concrete pavement and the cracking induction and expansion / contraction of the expansion joints.

[0004] Conventional technology 1 has a structure in which a cut surface of a transverse joint crossing a package body is orthogonal to a lateral A plurality of dowels embedded in both sides of the joint, parallel bars perpendicularly connected to each other through a dowel bar and a cross connector on a cut surface of a horizontal joint, vertical bars vertically connected through parallel bars and T natural couplers, And a lower bar assembly connected to the dowel bar in a parallel direction through the barrel.

In the conventional art 2, a plurality of metal bars (not shown) are formed along the lengthwise direction of the gap. In this case, And a dowel bar support which horizontally fixes the dowel bar at a height of 10 to 30 cm away from the ground in an upward direction.

The conventional dowel bar including the prior arts 1 and 2 has a problem that when the dowel bar is fastened, the dowel bar is released from the fixing of the dowel bar due to cementing, external impact or the like, and the construction position is changed.

In addition, the conventional dowel bar has a problem in that the cap member is clamped by the bar member, or the bar member is not sufficiently inserted into the cap member, so that the cap member is opened by the load when the cement is poured.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

A bar member is coupled to a cap member coupled to both sides of the bar member so that the bar member is coupled while passing through the insertion hole of the cap member to completely prevent the cap member from being opened by a load at the time of cement construction, And to provide the above-mentioned objects.

It is also an object of the present invention to provide a reinforced support effect by appropriately distributing a load acting vertically, as well as a stable load support through a support member having a unique triple support structure.

It is another object of the present invention to provide a fixing of a bar member utilizing an extended support portion of a support member without introducing a separate cap member, thereby reducing costs and shortening the process due to the omission of the cap member.

The present invention having the above object

A cap member including a bar member, a first cap to which one side of the bar member is coupled, and a second cap to which the other side is coupled, and a support member coupled to a lower portion of the cap member, And the first and second caps have insertion holes into which the bar members are inserted, and the bar members are coupled through the insertion holes.

The support member may include a first support portion that is orthogonal to the bar member and that supports the bottom surface of the bar member, a second support portion that is disposed in parallel with the first support portion and that is in contact with the bottom surface, And a third support portion connected to the second support portion, wherein the first support portion is disposed inside the second support portion. And the third support portion is inclined outward toward the lower side.

The first cap, the second cap, or both may be formed by an extended support portion extending upward from the second support portion, wherein the extended support portion includes a coupling portion to be engaged with the first support portion, And a fixing portion surrounding the fixing portion.

Further, the first cap, the second cap, or both may include an opening provided in the lower portion of the insertion hole, and first and second fastening portions protruding downward to constitute an opening portion, And a bolt member penetratingly inserted into the coupling hole provided in both the first and second portions.

According to the present invention,

It is possible to completely prevent the problem of the cap member from being opened due to the load at the time of cement construction through the insertion hole passing bar member and the cap member structure. Further, the support member having the unique triple support structure can stably support the load, Particularly a vertically acting load is appropriately dispersed so as to have a reinforced support effect and to provide a fixing of the bar member utilizing the extended support portion of the support member without introducing a separate cap member, It is possible to reduce costs and shorten the process.

1 is a perspective view showing the overall configuration of the present invention.
2 is a perspective view for explaining an embodiment of a support member according to the present invention;
3 is a partially enlarged view for explaining an embodiment of the cap member of the present invention.
4 is a second embodiment of the present invention.

While the present invention has been described in connection with certain embodiments, it is obvious that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the drawings, the same reference numerals are used for the same reference numerals, and in particular, the numerals of the tens and the digits of the digits, the digits of the tens, the digits of the digits and the alphabets are the same, Members referred to by reference numerals can be identified as members corresponding to these standards.

In the drawings, the components are expressed by exaggeratingly larger (or thicker) or smaller (or thinner) in size or thickness in consideration of the convenience of understanding, etc. However, It should not be.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term " comprising " or " consisting of ", or the like, refers to the presence of a feature, a number, a step, an operation, an element, a component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

It is to be understood that the first to second aspects described in the present specification are merely referred to in order to distinguish between different components and are not limited to the order in which they are manufactured, It may not match.

The present invention relates to a bar cushion which is formed by connecting a bar member to a cap member which is coupled to both sides of the bar member and which is adapted to be coupled while passing through the insertion hole of the cap member to completely prevent the cap member from being opened by a load at the time of cement construction Lt; RTI ID = 0.0 > assembly. ≪ / RTI >

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a multi-well bar assembly according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a basic perspective view of the present invention.

As shown in FIG. 1, this assembly D comprises a bar member 1, a cap member 2 and a support member 3.

Generally, the Dowel Bar increases the normal stress during the uneven settlement of reinforced concrete structure, and it can be restored after uniformly changing in a certain direction at the time of contraction expansion displacement (horizontal displacement) , The carbon content is high, and therefore, it is excellent in strength. In recent construction, a round bar type dowel bar (bar member) is used in which more than 90% of the tear is treated.

These dowel bars are installed to remove the harmful elements on the pavement surface during the contraction of the cement concrete pavement and the cracking induction and expansion / contraction of the expansion joints.

For each configuration, a plurality of bar members 1 are spaced apart from each other by a predetermined distance and are provided in parallel with each other.

Such a bar member 1 can be made of FRP material, has no corrosion, is inexpensive, easy to manufacture, and does not adhere to cement. In addition, the FRP material is excellent in resistance and tensile strength, and thus has the advantage that the occurrence of marks on the surface of the cement due to vibration can be suppressed.

The cap member 2 is configured to be coupled to both sides of the bar member 1 to fixedly arrange the bar member 1 and includes a first cap 2A to which one side of the bar member 1 is coupled, And a second cap 2B.

The following support member 3 is configured to be coupled to the lower portion of the cap member 2 and includes a bar member 1 and a cap member 2 adjacent to each other, Are connected to each other.

Particularly, the assembly D includes the insertion hole 20 into which the first and second caps 2A and 2B are inserted and the bar member 1 is inserted into the insertion hole 20, And is coupled through the first through third through holes.

Here, the bar member 1 is inserted through the insertion hole 20 so that the bar member 1 is inserted into the insertion hole 20 and passes through at least half of the insertion hole 20, 1 is positioned in the insertion hole 20 or protrudes outside the cap member 2 through the insertion hole 20.

The present invention having the above-described features and advantages has an advantage that a structure can be stably maintained in comparison with a conventional dowel bar having a one-side open cap.

The conventional double-well bar having a one-side open-type cap has a problem in that the cap can not properly fix the bar member 1 because the cap is opened when the cement is applied, (1) 'structure through which the bar member (1) passes.

2 is a perspective view for explaining the support member 3 of the present invention.

2, the assembly D includes the support member 3 including a first support portion 31, a second support portion 32, and a third support portion 33. As shown in Fig.

It is preferable that the first support part 31 is orthogonal to the bar member 1 and supports the lower side surface of the bar member 1 and is coupled to the cap member 2, .

Next, the second support portion 32 is arranged in parallel with the first support portion 31 and is in contact with the bottom surface.

The third supporting portion 33 is connected to the first supporting portion 31 at one end and the second supporting portion 32 at the other end to provide a connection between the first supporting portion 31 and the second supporting portion 32, 3 support portion 33 is preferably orthogonally coupled to the first and second support portions 31 and 32.

According to the present invention having the above-described features and features, it is possible to stably support a load through the first to third supporting portions 31, 32, and 33.

In particular, as can be seen in FIG. 2, the present assembly D is such that the first support portion 31 is disposed inside the second support portion 32. And the third support portion 33 may be inclined outward toward the lower side.

The load acting vertically through the inclined third support portion 33 is uniformly dispersed in the first support portion 31 and the second support portion 32 to provide a more enhanced support effect on the load at the time of cement construction.

3 is a partially enlarged view for explaining the cap member 2 of the present invention.

Fig. 3 (A) shows the small ring cap 2a, Fig. 3 (B) shows the large ring cap 2b, and Fig. 3 [C] shows the hook type cap 2c. And Figures 3 [D] and [E] illustrate the implementation of a composite cap with a hook-type and ring-cap coupled.

3 (A), the first cap 2A or the second cap 2B, or both of them, is made up of a small ring cap 2a .

In addition, the present invention according to one embodiment comprises the first cap 2A or the second cap 2B, or both, as shown in Fig. 3 [B], of a large ring cap 2b.

The difference between the two embodiments is that in the case of the small ring cap 2a the first support portion 31 is coupled to the side of the small ring cap 2a and in the case of the large ring cap 2b the first support portion 31 And is coupled to the lower portion of the large ring cap 2b.

The small ring cap 2a has the advantage that the load support of the bar member 1 can be further strengthened in that a part of the first support portion 31 directly contacts the bar member 1, The advantage of being able to prevent the bar member 1 from being pressed by the first support portion 31 and being damaged by the fact that there is no contact portion between the first support portion 31 and the bar member 1 .

According to another embodiment of the present invention, as shown in Fig. 3C, the first cap 2A or the second cap 2B or both are formed of a hook-shaped cap 2c.

The hook-shaped cap 2c is formed by an extended support portion 34 extending upward from the second support portion 32. The extended support portion 34 includes a coupling portion 341 coupled with the first support portion 31, And a fixing portion 342 that surrounds the outer surface of the bar member 1.

3, the coupling portion 341 is provided on both sides of the fixing portion 342 so that the coupling between the first supporting portion 31 and the extending supporting portion 34 is made more rigid so that the hook type cap 2c It is preferable to be provided so as to fix the bar member 1 more effectively.

The small ring cap 2a, the large ring cap 2b and the hook-shaped cap 2c may be introduced into the first cap 2A and the second cap 2B, respectively, It is possible.

Referring to FIGS. 3 [D] and [E] (the two drawings are the same embodiment, [D] is a perspective view and [E] is a plan view), and the combined shape of the hooked cap 2c and the ring cap 2b Caps are also available. In this case, both the advantages of the hook-shaped cap 2c and the advantages of the ring cap 2b can be provided. The ring caps 2b coupled with the hook-shaped cap 2c are preferably staggered in the diagonal direction as shown in the figure. By staggering in the diagonal direction as described above, the bar member 1 can be firmly fixed while dispersing the load acting on the bar member 1. [

Fig. 4 further includes a bar fixing hook 24 which is bent in the shape of a letter A to contact the end of the bar member 1 in the embodiment using the hook-shaped cap 2c. The bar fixing hooks 24 are exposed at both side ends of the bar member 1 in the case of the hook type cap 2c to prevent the problem that the bar member 1 can move when the hook type cap 2c is deformed So that the end portion of the bar member 1 is fixed.

Fig. 5 relates to a second embodiment of the present invention (the above-mentioned basic implementations are referred to as a first embodiment).

5, the assembly D includes an opening 23 provided below the insertion hole 20, a first cap 2A or a second cap 2B, or both, 23 and the first and second fastening portions 21 and 22 protruding downward and are formed to penetrate through the fastening portions h100 provided in both the first and second fastening portions 21 and 22 And a bolt member 100 to be inserted.

The present invention is characterized in that the cap member 2 changes its inner diameter according to the outer diameter of the bar member 1 through the openings 23 and the first and second fastening portions 21 and 22 The bar member 1 can be more firmly fixed.

However, when a conventional bolt is used for the connection between the first and second fastening portions 21 and 22, the fastening of the bolt may be loosened by continuous use.

In order to solve this problem, a nut may be used. However, when the length of the male screw of the bolt is short, it is impossible to use the nut. In addition, in the process of releasing or resetting the first and second fastening portions 22, .

Accordingly, the present invention intends to solve such a problem by introducing a specific bolt member (100).

The bolt member 100 of the present invention is constituted by the screw portion 101 and the head portion 102 so that the screw portion 101 penetrates the fitting hole h100 of the first and second fastening portions 21 and 22 Threaded.

The bolt member 100 has a hollow portion 103 formed to penetrate along the longitudinal direction and has a core member 110 penetratingly inserted into the hollow portion 103 and a coil spring (104).

Here, the core member 110 has a pressing portion 111 formed at one end portion and a plurality of wing portions 112 hinged at the other end portion and elastically supported to be folded in one direction.

In addition, the coil spring 104 presses the core member 110 in one direction to force the wing portion 112 to be hooked.

Particularly, the wing portion 112 is a type of latch-type member that can rotate only in one direction. A wing portion 112 is formed on the hinge portion 112a connecting the other side end portion of the wing portion 112 and the core member 110 An elastic body (not shown) for applying pressure to be in contact with one side direction, that is, the outer peripheral surface of the core member 110, is provided.

The wing portion 112 is forced to be folded in the direction of the core member 110 by the elastic body so that the core member 110 is pressed against the other side of the hollow portion 103 using the pressing portion 111 by using the pressing portion 111. [ The bolt member 100 is screwed to the engaging hole h100 and the wing portion 112 is opened after the wing portion 112 is folded so as to be pulled out to release the pressing of the pressing portion 111 The expanded wing portion 112 comes into contact with the coupling surface at the adjacent position of the coupling hole h100 while the core member 110 is pulled in the one direction of the hollow portion 103 by the coil spring 104, (In the embodiment of FIG. 5, it is shown that it is in contact with the surface of the second fastening part 22. When the bolt member 100 is inserted in the opposite direction, it is in contact with the surface of the first fastening part 21).

In this state, since the outflow of the core portion 110 is limited by the wing portion 112, even if the bolt member 100 is subjected to the rotational pressure in the release direction by vibration or the like, (100) is prevented from loosening. That is, the wing portion 112 functions like a nut.

When the first and second fastening portions 21 and 22 are required to be separated from each other, the pushing portion 111 is pressed to pull out the core member 110 in one direction of the hollow portion 103, The folded wing portion 112 is brought into contact with the other end portion of the screw portion 101 to fix the core member 110. In this state, When the member 100 is loosened, the bolt member 100 can be detached from the coupling hole h100.

At this time, between the hollow portion 103 and the outer circumferential surface of the core member 110, a latching structure using a step, an engagement groove, or a polygonal shape is provided so that the bolt member 100 and the core member 110 do not rotate together , So that the core member (110) is linearly moved back and forth without rotating at the hollow portion (103).

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

D: This assembly
1: bar member
2: cap member
2A: first cap 2B: second cap
20: insertion hole 21: first fastening part
22: second fastening part 23:
3: Support member
31: first support part 32: second support part
33: third support part 34:
341: binding site 342:
100: Bolt member

Claims (4)

A bar member;
A cap member including a first cap to which one side of the bar member is coupled and a second cap to which the other side is coupled; And
A support member coupled to a lower portion of the cap member;
, ≪ / RTI >
Wherein the first and second caps have insertion holes into which the bar members are inserted,
And the bar member is coupled through the insertion hole.
The method according to claim 1,
The support member
A first support portion that is perpendicular to the bar member and that supports a lower surface of the bar member, a second support portion that is disposed in parallel with the first support portion and that is in contact with the bottom surface, and a second support portion that has one end connected to the first support portion and the other end connected to the second support portion 3 support,
The first support portion is disposed inside the second support portion. And the third support portion is inclined outward toward the lower side.
The method of claim 2,
The first cap or the second cap, or both,
And an extended support portion extending upward from the second support portion,
Wherein the extended support portion includes a coupling portion coupled with the first support portion and a fixing portion surrounding the outer surface of the bar member.
The method according to claim 1,
The first cap or the second cap, or both,
An opening portion provided at the lower portion of the insertion hole, and first and second fastening portions protruding downward to constitute an opening portion,
Further comprising a bolt member inserted through a coupling hole provided in both the first and second coupling portions,
The bolt member
A hollow portion penetrating along the longitudinal direction,
A core member having a pressing portion formed at one end portion thereof and a plurality of wing portions hinged at the other end portion and elastically supported to be folded in one direction,
And a coil spring provided on the hollow portion to urge the shim member in one direction so as to force the opened wings to be hooked and supported.

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