KR101447722B1 - Composite rahmen bridge and construction method thereof - Google Patents

Abstract

The present invention discloses a low-profile composite type raymen bridge and a method of constructing the same, in which the generation of the moment and the moment are similar to each other. According to the disclosed low-rise composite raymen bridge and the construction method thereof, a foundation portion formed on the ground through the placement of concrete to form a seating space portion; A wall having a lower end inserted into the seating space and coupled to the base by a hinge connection, and a coupling member protruding from the upper end; A girder which is mounted on an upper end of the wall so that both ends of the girder are stronger than the joining member by the steel bracket and the concrete pouring space is formed to cover the steel through the pouring of the concrete; And an upper slab formed on the upper portion of the girder through pouring of concrete, thereby minimizing the difference between the moment and the moment generated at the center of the girder and the upper end of the wall, and to prevent the bending moment from being transmitted to the base .

Description

{Composite rahmen bridge and construction method thereof}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a low-profile composite type rayman bridge and a method of constructing the same. More particularly, the present invention relates to a low- The present invention relates to a low-profile composite type raymen bridge capable of minimizing a difference between a positive moment and a negative moment generated at the top of a wall (right corner), and preventing a bending moment from being transmitted to the base.

In recent years, floods frequently occur due to heavy rainfall or localized heavy rain due to severe climate change. Therefore, the planned flood volume and flood level of rivers have been increased, and bridge type with long span and low height with span is required.

However, since the present bridge type can not satisfy these requirements, it is necessary to use multi-span bridges to lower the bridge height,

Among conventional bridge types, raymen bridge is rarely used for long-span bridges because of its large weight. It is mainly applied to short-span bridges such as roads and small river which are less than 15m in span length. Especially, when the span of the ramen bridge becomes longer, the momentum at the upper part of the foundation and the moment at the upper part of the foundation increase sharply and the cross section of the slab and foundation becomes large.

In addition, in the conventional reinforced concrete raymond bridge, when the section of the slab is subjected to a uniform distribution load due to a constant upper and lower portions over the cells, at the fulcrums on both sides where the wall and the upper slab are engaged, A large bending moment is applied.

In particular, when the span becomes longer, the bending moment acting on the fulcrum portion and the magnitude of the momentum of the base portion become larger. Therefore, the fulcrum portion and the base portion must have a cross section having a greater bending moment rigidity, and the stability of the structure can be secured only by increasing the base width.

Therefore, it is necessary to develop a ramen bridge to solve the problem of the root and the top end of the foundation.

Fig. 1 is a view showing the moment and the moment of the moment generated in a conventional synthetic ramen bridge and a low-rise composite ramen bridge. It occurs in various forms.

Korean Patent Publication No. 10-2010-0093875 Korean Patent Publication No. 10-2012-0070120

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a hinge structure in which a foundation and a wall are combined in a hinge form, The present invention is to provide a low-profile composite raymen bridge capable of minimizing a difference between a moment and a moment generated in each part and preventing the bending moment from being transmitted to the base.

In order to accomplish the above object, the present invention provides a method of manufacturing a bearing structure, comprising: a base portion formed on a ground through a concrete installation to form a seating space; A wall having a lower end inserted into the seating space and coupled to the base by a hinge connection, and a coupling member protruding from the upper end; A girder which is mounted on an upper end of the wall so that both ends of the girder are stronger than the joining member by the steel bracket and the concrete pouring space is formed to cover the steel through the pouring of the concrete; And an upper slab formed on the upper portion of the girder through the pouring of concrete.

In addition, the present invention provides a low-rise composite raymen bridge that further includes a base reinforcement portion provided between the seating space and the wall so as to allow the wall to flow while preventing damage to the seating space and the wall.

The present invention also relates to a wall plate formed at a lower end of a wall; And a base reinforcement portion made of an elastic rubber formed on the inner surface of the seating space portion to be in contact with the lower end portion of the wall and the wall plate.

Further, the present invention provides a low-profile composite raymond bridge which further comprises a base plate provided between the elastic rubber and the inner surface of the seating space.

The present invention also provides a dowel bar which is coupled to another one to be inserted into either the base or the wall; And a hinge connection part composed of a dowel cap formed on one of the base part and the wall part so as to guide the dowel bar inserted into any one of them.

The present invention also relates to a claw portion protruding from a wall; And a hinge connection portion formed by an insertion groove portion formed on an inner surface of the seating space portion to insert a claw portion.

In addition, the present invention provides a steel bar comprising: a steel bar having an upper end exposed to an upper end of a wall and coupled to a steel bracket portion, a lower end exposed to the lower end of the wall and inserted into the base; A fixed weight coupled to a lower end of the steel bar so as to prevent the steel bar from coming off; And a hinge connection part provided on the wall so as to insert a steel bar for insertion and fixing of the steel bar, the hinge connection part comprising a sheath pipe grooved inside the steel bar while the steel bar is inserted.

In addition, the present invention provides a bracket comprising: a first bracket coupled to a girder so that one end thereof is exposed to the outside of the girder; And a second bracket to which the coupling member is inserted and coupled and which is connected to the first bracket through the fixing plate.

According to another aspect of the present invention, there is provided a method of constructing a low-profile composite type raymond bridge, comprising: a foundation forming step of forming a foundation on a ground through the placement of concrete to form a seating space; A wall forming step of integrally forming a hinge connection part and a coupling member on the wall and seating the wall in the seating space part so that the hinge connection part is coupled to the seating space part; A girder forming step of placing a girder on a wall, connecting a girder and a wall by using a steel bracket part, sealing the steel bracket part through concrete pouring, and tightly connecting the wall and the girder; And a slab forming step of forming an upper slab by placing concrete on the upper portion of the girder and forming a barrier wall and a package on the upper slab.

According to the low-rise composite raymen bridge and the construction method of the present invention as described above, since the foundation and the wall are coupled in a hinged manner, the wall and the girder are assembled and assembled, It is possible to minimize the difference between the positive moment and the negative moment generated at the upper end (right corner) and to prevent the bending moment from being transmitted to the base.

Fig. 1 is a view showing the moment and moment generated in the conventional synthetic rammen bridge.
2 is a schematic diagram showing a low-rise composite type ramen bridge according to an embodiment of the present invention.
3 is a view illustrating a hinge connection portion according to a first embodiment of the present invention.
4 is a view illustrating a hinge connection portion according to a second embodiment of the present invention.
5 is a view illustrating a hinge connection portion according to a third embodiment of the present invention.
6 is a perspective view showing a steel bracket part according to the first embodiment of the present invention.
Fig. 7 is a side view of Fig. 6. Fig.
8 is a perspective view showing a steel bracket part according to a second embodiment of the present invention.
Fig. 9 is a side view of Fig. 8. Fig.
10 is a perspective view showing a steel bracket part according to a third embodiment of the present invention.
11 is a view showing a construction of a low-rise composite type ramen bridge according to an embodiment of the present invention.
12 is a view for explaining a method of constructing a low-rise composite raymond bridge according to an embodiment of the present invention.
FIG. 13 is a diagram showing a moment and a moment generated in a low-profile composite raymond bridge according to an embodiment of the present invention.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

2 to 11, a description will be made of a low-profile composite raymond bridge according to an embodiment of the present invention.

2 to 11, the low-rise composite raymond bridge according to the present embodiment includes a base portion 110 formed on the ground through the pouring of concrete, a base portion 110 formed on the base portion 110 through a hinge connection portion 120, A girder 150 which is hingedly coupled to the wall 130 by a steel bracket 140 and an upper slab 160 which is formed on the upper portion of the girder 150 through the concrete .

In addition, the low-rise composite type ramen bridge according to the present embodiment has a base 130 provided between the base 110 and the wall 130 to prevent breakage of a contact portion between the base 110 and the wall 130, And further includes a reinforcing portion 170.

The low rigidity composite raymond bridge according to this embodiment is hinged so that the wall body 130 can be movably supported at the base portion 110 by using the hinge connection portion 120, Since the wall 130 and the girder 150 are rigidly joined to each other, the momentum generated at the center of the girder 150 and the upper end of the wall 130 are similar to those of the parent moments, and the bending moment is transmitted to the base 110 The height of the girder 150 is reduced, and the size of the base 110 is reduced.

The base 110 has a seating space 111 for hinging the wall 130 and a lower end of the wall 130 is inserted into the seating space 111. The base part 110 is formed by installing a mold on the ground and pouring and curing the concrete.

The lower end of the wall 130 is inserted into the seating space portion 111 and is movably coupled to the base portion 110 by the hinge connection portion 120. The wall 130 may be formed by placing a mold on the upper side of the base 110 and then pouring and curing the concrete. Alternatively, the wall 130 may be moved to the base 110 after being formed elsewhere.

The hinge connection part 120 for hinging the base part 110 and the wall 130 can be constructed in various forms as shown in FIGS.

Specifically, the hinge connection part 120 according to the first embodiment has a dowel bar 121 (one end part) coupled to the inner surface of the seating space part 111 of the base part 110 and the other end part inserted into the wall body 130 And a dowel cap 123 coupled to the wall 130 so that the dowel bar 121 is inserted and guided.

The hinge connection part 120 according to the first embodiment has a structure in which the wall 130 is formed to insert the dowel cap 123 into the wall 130 and then the dowel bar 121 is inserted into the wall 130, The wall 130 is placed on the foundation 110 and the concrete is placed on the foundation 110 so that the concrete is placed on the lower end of the wall 130 so as to fix the darwell bar 121. [ And the wall 130. As shown in Fig.

4, the hinge connection part 120 according to the second embodiment includes a claw part 125 protruding from one side of the lower end of the wall body 130, and a seating space part 111 for inserting the claw part 125, And an insertion groove 127 formed on the inner surface of the housing.

In the hinge connection part 120 according to the second embodiment, a mold is installed in a state in which the wall body 130 is seated in the base part 110, concrete is placed in the mold, Thereby forming a portion 111 and an insertion groove 127.

5, the upper end of the hinge connection part 120 according to the third embodiment is exposed to the upper end of the wall body 130 and coupled to the steel bracket part 140. The lower end of the hinge connection part 120 is exposed to the lower end of the wall body 130 And a fixing weight 129 coupled to the lower end of the steel rod 128 to prevent separation of the steel rod 128. [ At this time, the wall 130 is provided with a sheath pipe 133 for firmly fixing the steel rod 128 and facilitating its installation, and a steel rod 128 is inserted into the sheath pipe 133 The steel rod 128 is fixed to the inside of the sheath pipe 133 through a grouting process.

In addition, the low-rise composite raymond bridge according to the present embodiment can prevent the contact portion between the base portion 110 and the wall 130 from being damaged, A base reinforcing portion 170 is further provided between the wall 111 and the wall 130. [

The basic reinforcing portion 170 is formed by a wall plate 171 formed at the lower end of the wall body 130 and a resiliently deformable portion 172 formed on the inner surface of the seating space portion 111 to be in contact with the lower end of the wall body 130 and the wall plate 171 And a rubber 173.

The base reinforcement portion 170 may be formed of a base plate provided between the elastic rubber 173 and the inner surface of the seating space portion 111 in accordance with the shape of the hinge connection portion 120 connecting the base portion 110 and the wall body 130, (175) may be further formed.

In the meantime, the wall 130 according to the present embodiment is formed with a coupling member 131 protruding from the upper end thereof so that the coupling bracket 140 can be engaged. The coupling member 131 may be formed by an anchor bolt or by an H beam. When the coupling member 131 is formed by the H beam, the coupling member 131 is provided with an angle 131a for coupling with the coupling bracket 140.

The girder 150 is mounted on the upper end of the wall body 130 so that the both ends of the girder 150 are tightened with the coupling member 131 by the steel bracket part 140 and inserted into the concrete pouring space part 151 are formed.

The steel bracket part 140 for joining the wall 130 and the girder 150 can be constructed in various forms as shown in FIGS.

6 and 7, the steel bracket part 140 according to the first embodiment of the present invention includes a first bracket 141 (not shown) coupled to the girder 150 so that one end thereof is exposed to the outside of the girder 150, And a second bracket 143 coupled to the coupling member 131 of the wall 130 and coupled to the first bracket 141 through the fixing plate 145. Here, the first bracket 141 and the second bracket 143 are formed in a "U" shape.

In addition, the first bracket 141 and the second bracket 143 are coupled to each other by the fixing plate 145 in the steel bracket part 140 according to the first embodiment. The fixing plate 145 is coupled to the first bracket 141 and the second bracket 143 by bolts and nuts.

The second bracket 143 is formed with a coupling hole 143a through which the coupling member 131 penetrates and is formed with a pin member 143a on the outer surface thereof so as to be more firmly coupled with the concrete inserted into the space 151 of the girder 150. [ (143b).

In addition, the reinforcing plate 143c is joined to the inner surface of the second bracket 143 so as to prevent deformation or breakage and improve durability.

The steel bracket part 140 according to the first embodiment is used when the engaging member 131 is formed by an anchor bolt and the supporting bracket 143 provided between the second bracket 143 and the wall body 130 147).

8 and 9, the steel bracket part 140 according to the second embodiment is used when the coupling member 131 is formed by the H beam, and the second bracket 143 is used when the coupling member 131 And is engaged with the engaging member 131 so as to be supported by the angle 131a.

The second bracket 143 is engaged with the angle 131a through bolts and nuts and the reinforcing plate 143c is engaged with the engaging member 131 through the bolts and the nuts.

The steel bracket part 140 according to the first and second embodiments is preferably used when the girder 150 is used with a PSC beam.

10, the steel bracket part 140 according to the third embodiment has a hollow space 151 formed in the first bracket 141 and the first bracket 141 is connected to the H beam coupling member 131, Lt; / RTI > To this end, the steel bracket part 140 according to the third embodiment is formed with a through hole 141a through which the engaging member 131 is inserted into the first bracket 141, and the engaging member 131 inserted into the through hole 141a 131 are fixed to the inner surface through a welding or bolt fixing method. The fastening plate 141b is engaged with the engaging member 131 through bolts and nuts.

In addition, the fastening bracket portion 140 according to the third embodiment has the fixing pin 141c bonded to the inner surface and the outer surface thereof.

As shown in FIGS. 11 (a) and 11 (b), the low-rise composite raymond bridge according to the present invention having the above-described structure may be formed into a short span shape or a continuous span shape as shown in FIG. And a PSC beam or a steel material may be used for the girder 150 as shown in Figs. 11 (a) and 11 (b).

A method of constructing a low-rise composite type ramen bridge according to the present invention constructed as above will be described with reference to Figs. 2 to 12. Fig.

As shown in FIGS. 2 to 12, the method of manufacturing a low profile composite raymond bridge according to the present embodiment includes a foundation forming step of forming a foundation 110 on a ground, a foundation forming step of forming a wall 130 on the foundation 110, And a slab forming step of forming an upper slab 160 on the girder 150. The slab forming step includes the steps of:

In the foundation forming step, after the formwork is installed, the concrete is laid to construct the foundation part 110.

In the wall forming step, the hinge connection part 120 is formed in a state where the wall body 130 is seated on the upper surface of the base part 110 to stably fix the wall body 130 and the base part 110. At this time, the base reinforcement portion 170 is formed between the wall body 130 and the base portion 110.

In the girder forming step, the girder 150 is mounted on the upper end of the wall 130 so that the coupling member 131 of the wall 130 is inserted into the coupling bracket 140, The concrete member 140 and the coupling member 131 are coupled to each other and the concrete is poured into the hollow space 151 of the girder 150 to tightly and stably seal the coupling bracket part 150.

In the slab forming step, concrete is placed on the upper part of the girder 150 to form the upper slab 160, and the barrier wall and the asbestos packing are performed on the upper slab 160.

It will be apparent to those skilled in the art that the present invention is not limited to the embodiment described above, but may be embodied in various other forms without departing from the spirit of the invention, It will be understood by those of ordinary skill in the art that various changes and modifications may be made without departing from the scope of the present invention.

110: base portion 111: seating space portion
120: hinge connection part 121:
123: dowel cap 125: claw portion
127: insertion groove 128: steel bar
129: fixed weight 130: wall
131: engaging member 140: engaging bracket part
141: first bracket 143: second bracket
150: girder 151:
160: upper slab 170:
171: wall plate 173: elastic rubber
175: base plate

Claims (10)

A foundation 110 formed on the ground through the placement of concrete to form a seating space 111; A wall (130) having a lower end inserted into the seating space part, coupled to the base part by a hinge connection part (120), and a coupling member (131) protruding from the upper end part; And a girder 150 (see FIG. 1) in which a concrete installation space 151 is formed to cover the above-mentioned steel connection part through the installation of concrete, so that both end portions are fastened to the coupling member by the coupling bracket part 140 ); And an upper slab (160) formed on the upper portion of the girder through the pouring of concrete,
Wherein the fastening bracket portion includes a first bracket protruding from the girder and having a through hole formed therethrough so as to penetrate through the fastening plate and coupled with the engaging member through a fastening plate. . The method according to claim 1,
Further comprising a base reinforcement part (170) provided between the seating space part and the wall so as to allow the wall to flow while preventing damage to the seating space part and the wall body, . [3] The apparatus of claim 2,
A wall plate (171) formed at a lower end of the wall; And
An elastic rubber (173) formed on the inner surface of the seating space to contact the lower end of the wall and the wall plate;
And a low-profile synthetic ramen bridge. The method of claim 3,
Wherein the base reinforcing part further comprises a base plate (175) provided between the elastic rubber and the inner surface of the seating space part. The hinge connector according to claim 1,
A dowel bar 121 coupled to the other to be inserted into any one of the base and the wall; And
A dowel cap 123 formed on any one of the base and the wall to guide the dowel bar inserted into any one of the dowel bars;
And a low-profile synthetic ramen bridge. The hinge connector according to claim 1,
A claw 125 protruding from the wall; And
An insertion groove 127 formed on an inner surface of the seating space to insert the claw portion;
And a low-profile synthetic ramen bridge.
The hinge connector according to claim 1,
A rigid steel rod 128 having an upper end exposed to the upper end of the wall to be coupled to the steel bracket and a lower end exposed to the lower end of the wall to be inserted into the base; And
A fixed weight 129 coupled to the lower end of the steel rod to prevent the steel rod from being separated from the fixed rod;
And a low-profile synthetic ramen bridge. A foundation 110 formed on the ground through the placement of concrete to form a seating space 111; A wall (130) having a lower end inserted into the seating space part, coupled to the base part by a hinge connection part (120), and a coupling member (131) protruding from the upper end part; And a girder 150 (see FIG. 1) in which a concrete installation space 151 is formed to cover the above-mentioned steel connection part through the installation of concrete, so that both end portions are fastened to the coupling member by the coupling bracket part 140 ); And an upper slab (160) formed on the upper portion of the girder through the pouring of concrete,
The steel bracket portion
A first bracket 141 coupled to the girder so that one end thereof is exposed to the outside of the girder;
A second bracket 143 to which the engaging member is inserted and coupled and is connected to the first bracket through the fixing plate;
And a low-profile synthetic ramen bridge. delete A method of constructing a low-rise synthetic ramen bridge as set forth in any one of claims 1 to 7, comprising the steps of: forming a foundation part (110) on a ground through the placement of concrete to form a seating space part (111) ; The hinge connection part 120 and the coupling member 131 are integrally formed on the wall and the wall is seated in the seating space part so that the hinge connection part is coupled to the seating space part, Forming step; A girder forming step of placing a girder on the wall, connecting the wall with the girder by using a steel bracket part, and sealing the steel bracket part through concrete pouring, thereby tightly coupling the wall and the girder; And a slab forming step of forming an upper slab by placing concrete on the upper portion of the girder and forming a barrier and a package on the upper end of the upper slab,
The girder forming step may include using a steel bracket part protruding from the girder, having a through hole formed therethrough to penetrate the joining member, and a first bracket coupled to the joining member through a joining plate. A method of constructing a low - form synthetic ramen bridge.

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