KR101404477B1 - Longitudinal Segmental Girder - Google Patents

Abstract

The present invention relates to a longitudinally segmented girder having a flange connecting flanges which connect the oblique abdomen and the oblique abdomen, wherein the girder has a flange that is bisected longitudinally to form a first segment and a second segment, And the coupling surface on which the first segment and the second segment are combined are respectively formed with shear keys and are bonded to each other and coated with epoxy to integrate them so that the PS-type U-shaped girder is divided and assembled in the longitudinal direction The weight of the girder can be minimized and the structural advantage of the cross section of the box and the economical efficiency of the cross section of the slope can be secured at the same time.

Description

[0001] The present invention relates to a longitudinal segmented girder,

More particularly, the present invention relates to a longitudinal segment type girder, and more particularly, it is possible to minimize the weight of the girder by assembling and assembling the PS-type U- The present invention relates to a longitudinal segmented girder which can be applied to the interstices between longitudes because both the structural advantage of the cross section of the box and the economical efficiency of the oblique section can be secured at the same time.

Generally, one girder is divided into several segments, which are manufactured at the factory or manufacturing site. Then, each segment is joined at the site of use of the girder. In the segment joining method of the girder, And a contact type joining method in which an adhesive such as epoxy or the like is applied by thinly applying an adhesive such as an epoxy or the like to the joint surface of the segment or joining the segments by tightly applying the tensile force without using an adhesive, have.

However, since concrete concrete, mortar, grout, and the like are installed at the joint portion between the conventional girder segments, there is a problem that the operation of placing reinforcing bars between the jointed segments and the concrete pouring and curing are required, , And the reinforcing bars in the longitudinal direction are discontinuous, and stress concentration may occur in the joint due to manufacturing errors, improper compounding and application of adhesives, and the like.

As a background of the present invention, Patent Document No. 2009-0105503 entitled " Box girder for a segmented bridge using a steel wire which is tensioned in the longitudinal direction and the transverse direction, and a construction method thereof "

8, the box girder 100 for a bridge is constructed so as to be connected to the lower facilities of the bridge so as to be in contact with each other in the longitudinal direction and the transverse direction, A side wall 113 having a plurality of first connection holes 114 formed on both sides of the hollow portion 111 and forming a downward parabolic curve toward the middle of the span, Upper and lower flange portions 115 and 116 are formed on the upper and lower sides of the hollow portion 111. A downward parabolic curve is formed on the inner side of the upper flange portion 115 toward the both end portions and an upward parabolic curve is formed on the middle portion. A plurality of girder bodies 110 having second connecting holes 117 formed therein; A sheath pipe 120 inserted into the first connection hole 114 and the second connection hole 117; The first PC steel wire 130 and the first PC steel wire 130 inserted into the sheath pipe 120 inserted and connected to the first connection hole 114 so as to integrate the plurality of the girder bodies 110 longitudinally, Is inserted into the sheath tube (120) inserted in the second connection hole (117) so that the girder bodies (110) integrated with the PC steel wire (130) and the girder bodies (110) And a second PC steel wire (140) fixed thereon. The present invention proposes a box girder for a segmented bridge using a longitudinally and laterally strained steel wire.

However, in the case of a girder having a pair of oblique abdomen, the girder is very heavy, so that it is difficult to use the girder as a whole and it is also difficult to apply the girder to the girders.

Patent Publication No. 2009-0105503 "Box girder for segmented bridges using a steel wire which is strained in the longitudinal direction and the transverse direction and method of construction thereof"

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a psi-shaped U-shaped girder or a closed box girder having a flange connecting an oblique abdomen portion and an oblique abdomen portion, And a second segment, and a joining surface on which the first segment and the second segment are combined are respectively formed with shear keys, and they are bonded to each other and applied with epoxy to integrate the longitudinal segmented girder. have.

The present invention relates to a psi-type U-shaped girder or a closed-box girder having a flange connecting an oblique abdomen portion and an oblique abdomen portion, wherein the girder is composed of a first segment and a second segment in which the flange is bisected in the longitudinal direction, And a joining surface on which the segment and the second segment are combined are each formed with a shear key, and are bonded to each other and coated with epoxy to integrate the longitudinal segmented girder.

In addition, the shear key may be formed to have a stepped portion to be engaged with each other, a protruding key of a protruding shape may be formed and be engaged with each other, or a sheath pipe may be formed through a flange of the first segment and the second segment, And a reinforcing steel bar may be formed in the protruding key to reinforce the engaging surface.

The first segment and the second segment may be formed to have a predetermined interval in the inside of the first segment and the second segment, and to insert the steel wire so as to pass through the barrier rib and the oblique portion.

In addition, end portions of the first segment and the second segment may be closed so that the end portion of the girder is configured to protrude to the outside of the oblique abdomen, thereby preventing conduction of the girder.

According to a second aspect of the present invention, there is provided a U-shaped girder having a flange connecting an inclined wavy portion and an inclined wavy portion, wherein the girder is composed of a first segment and a second segment, The flange of the first segment and the flange of the second segment is formed with a protruding protrusion protruding upward, and a fitting hole penetrating the protruding protrusion is formed at regular intervals. In order to provide a longitudinal segmented girder.

In addition, end portions of the first segment and the second segment may be closed so that the end portion of the girder is configured to protrude to the outside of the oblique abdomen, thereby preventing conduction of the girder.

In addition, in the case of a PS-U type girder or a closed box girder having a flange connecting the oblique abdomen portion and the oblique abdomen portion, the girder is composed of a first segment and a second segment, the flange being bisected longitudinally, And the flange of the second segment are coupled to the lower end of the flange so as to protrude over the entire length of the flange, and the protruding piece is coupled to the joint steel plate, Wherein the end portions of the segments and the second segments are formed integrally with the end portions of the girders so that the end portions of the segments are projected to the outside of the oblique abdomen.

In addition, in the case of a PS-U type girder or a closed box girder having a flange connecting the oblique abdomen portion and the oblique abdomen portion, the girder is composed of a first segment and a second segment, the flange being bisected longitudinally, And flanges of the first and second segments to form a coupling hole, through which the coupling hole is inserted into the end of the coupling hole that is in contact with the flanges, And the end segments of the two segments are formed so as to be integrally formed with the end rods in such a shape that the end portions are closed and protruded to the outside of the obliquely abdomen portion.

In addition, in the case of a PS-U type girder or a closed box girder having a flange connecting the oblique abdomen portion and the oblique abdomen portion, the girder is composed of a first segment and a second segment, the flange being bisected longitudinally, And the upper part of the end of the flange of the second segment is blocked out to form a step, and the reinforcing bars are embedded in the step so that the reinforcing bars are overlapped with each other. End girder is characterized in that both end portions are integrally formed in such a manner that the end portion is closed and the end portion of the girder protrudes outside the oblique abdomen portion.

The longitudinal segmented girder of the present invention can be constructed so that the psi-shaped U-shaped girder is divided and assembled in the longitudinal direction so as to minimize the weight of the girder and minimize the weight of the girder at the time of construction, The economical efficiency of the abdominal section can be secured at the same time.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view and a sectional view showing a first embodiment of a longitudinal segmented girder of the present invention,
FIG. 2 is a view showing various embodiments of the first embodiment of FIG. 1,
3 is a perspective view and a cross-sectional view showing a second embodiment of the longitudinal segmented girder of the present invention,
Fig. 4 is a sectional view showing a third embodiment of the longitudinal segmented girder of the present invention, Fig.
Fig. 5 is a sectional view showing a fourth embodiment of the longitudinal segmented girder of the present invention, Fig.
6 is a sectional view showing a fifth embodiment of the longitudinal segmented girder of the present invention,
Fig. 7 is a sectional view showing an embodiment of a longitudinal segmented girder comprising two box girders, Fig.
Fig. 8 is an exploded perspective view showing a box girder for a segmented bridge using a conventional longitudinally and laterally tensed steel wire. Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

 Hereinafter, the technical structure of the present invention will be described in detail with reference to the preferred embodiments.

1 is a perspective view and a cross-sectional view showing a first embodiment of a longitudinal segmented girder of the present invention.

The longitudinal segmented girder 1 of the present invention is a PS-type U girder or a closed box girder having a flange 30 connecting an oblique abdomen 11 (21) and an oblique abdomen, The girder 1 itself is divided into a first segment 10 and a second segment 20 and is formed by a combination of the first segment 10 and the second segment 20. In this case,

The first segment 10 and the second segment 20 are formed symmetrically with respect to each other and the coupling surfaces on which the first segment 10 and the second segment 20 are coupled are each formed with a shear key, 10 and the second segment 20 and the first and second segments 10 and 20 are coated with epoxy to form a first segment 10 and a second segment 20, .

The shear keys facilitate the engagement by forming the stepped portions 131 and 231, which are engaged with the first segment 10 and the second segment 20, respectively.

The step 131 of the first segment 10 and the step 231 of the second segment 20 are formed on the upper or lower surface of the coupling surface where the first segment 10 and the second segment 20 are coupled, So that the coupling steps 131 and 231 are overlapped with each other.

Fig. 2 is a view showing various embodiments of the first embodiment of Fig. 1. Fig.

As shown in FIG. 2A, the protruding keys 132 and 232 protruding from the keypad may be formed and engaged with each other.

The protruding keys 132 and 232 are formed in the shape of a letter A. The first and second segments 10 and 20 are formed in such a manner that the ends of the letter segments are oriented in either one of the longitudinal directions. At this time, the protrusion key 131 of the first segment 10 and the protrusion key 232 of the second segment 20 are configured to be opposite to each other so that the protrusion key 131 of the first segment 10, And the protruding keys 232 of the second segment 20 are engaged with each other.

Since the protruding keys 132 and 232 are in a lobed configuration, the rigidity of the bent portion and the end portion may be weakened. Therefore, the reinforcing steel bar 132a (232a) ) Can be additionally constructed and reinforced. The reinforcing steel bars 132a and 232a may be configured to have the same shape as the protruding keys 132 and 232 and may be reinforced to match the shapes of the protruding keys 132 and 232. [

The combination of the first segment 10 and the second segment 20 may be formed by forming a sheath tube through the flanges 30a and 30b of the first segment 10 and the second segment 20, And the tension member 40 is inserted into the sheath tube and can be tightly coupled.

The sheath tube is constructed so as to pass through the first segment 10 and the second segment 20 in the width direction and the sheath tube of the first segment 10 and the sheath tube of the second segment 20 are connected to each other And a tension member 40 is inserted to penetrate the sheath tube after the first segment 10 and the second segment 20 are joined and the tension member 40 is tightly coupled.

2B, the first segment 10 and the second segment 20 may have partition walls 51 and 52 formed therein at regular intervals, and the partition walls 51 and 52 may be inclined It is also possible to insert the steel wire 50 so as to penetrate through the abdomen portion 11 (21) and tie them together.

Partitions 51 and 52 are formed at regular intervals in the space between the central inclined portions 11 and 21 when the first segment 10 and the second segment 20 are coupled. The two partition walls 51 and 52 are configured such that ends of the partition walls 51 and 52 contact with each other when the first and second segments 10 and 20 are coupled to each other. And the steel wire 50 is inserted and tightly coupled.

2C, both end portions of the first segment 10 and the second segment 20 are formed in such a shape that the ends thereof are closed and protruded to the outside of the oblique abdomen portions 11 and 21, The first segment 10 and the second segment 20 are arranged at both ends of the first segment 10 and the second segment 20 because the width of the lower portion of the oblique wraps 11 and 21 is narrow, The additional ropes 31 and 32 can be formed to prevent the girder 1 from being conducted. The end ropes 31 and 32 are formed in such a manner that the oblique rib portions 11 and 21 are extended and the end ropes 31 and 32 are in contact with each other on the inner side of the obliquely- do. The end ropes 31 and 32 can overcome the problem of conduction in the girder longitudinal direction split production with the inclined wavy part by integral molding of the end robe in the girder.

3 is a perspective view and a cross-sectional view showing a second embodiment of the longitudinal segmented girder of the present invention.

As shown in FIGS. 1 and 2, the first segment 10 and the second segment 20 may be coupled using a shear key as described above. As shown in FIG. 3, the first segment 10 The protruding protrusions 15 and 25 protruding upward are formed on the surfaces of the first segment 20 and the second segment 20 which are connected to each other and the protrusions 15 and 25 penetrate through the protrusions 15 and 25 ) 26, so that the rigid bar 70 can be inserted through the engaging holes 16, 26 to be engaged.

That is, the first segment 10 is protruded upward from the end of the flanges 30a and 30b where the first segment 10 and the second segment 20 are coupled to form protruding protrusions 15 and 25, By increasing the contact area of the first segment 10 and the second segment 20 when the first segment 10 and the second segment 20 are engaged with each other and by joining the first segment 10 and the protrusions 15 and 25 of the second segment 20 with the steel rod 70 So that the first segment 10 and the second segment 20 are more firmly coupled. At this time, epoxy can be applied to the mutual coupling surfaces of the protruding jaws 15 and 25 to be integrated.

As in the first embodiment, both end portions of the first segment 10 and the second segment 20 are formed in such a shape that the ends thereof are closed and protruded to the outside of the oblique abdomen portions 11 and 21, The first segment 10 and the second segment 20 are arranged at both ends of the first segment 10 and the second segment 20 because the width of the lower portion of the oblique wraps 11 and 21 is narrow, The additional ropes 31 and 32 can be formed to prevent the girder 1 from being conducted. The end ropes 31 and 32 are formed in such a manner that the oblique rib portions 11 and 21 are extended and the end ropes 31 and 32 are in contact with each other on the inner side of the obliquely- . The end ropes 31 and 32 can overcome the problem of conduction in the girder longitudinal direction split production with the inclined wavy part by integral molding of the end robe in the girder.

The longitudinal segmented girder 1 of the present invention can reduce the number of upper girders by using a U-shaped girder or a closed box girder having a pair of oblique abdomen portions, and the number of upper girders is reduced, Since the weight of the structure can be minimized, it is possible to reduce the load to be transmitted to the lower part, which is advantageous for economical efficiency and lower design. In addition, by dividing the girder in the longitudinal direction and reducing the weight of the girder, It is applicable.

The construction of the longitudinal segmented formwork of the present invention and the method of installing the bridge using the same will be briefly described as follows.

First, a workbench and a formwork for the girder 1 are installed.

The first segment 10 and the second segment 20 may be divided or manufactured by providing a partition plate divided in the longitudinal direction of the girder 1 when the formwork is installed or the first segment 10 of each divided girder 1, And a separate die for the fabrication of the second segment 20.

After the concrete is laid and cured in the mold, the mold is disassembled and the prestress is introduced into the first segment 10 and the second segment 20, which are sufficiently cured.

Thereafter, the first segment 10 and the second segment 20 divided in the lengthwise direction of the girder 1 are installed on the temporary support and the first segment 10 and the second segment 20 are arranged in various forms And the protruding jaws 15,

After the first segment 10 and the second segment 20 are coupled to each other, a mold for installing the bottom plate is installed on the upper portion, and a reinforcing bar is installed. Then, the bottom plate concrete is poured.

4 is a cross-sectional view showing a third embodiment of the longitudinal segmented girder of the present invention.

4, the girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected in the longitudinal direction, and the first segment 10 and the second segment 20, The projecting pieces 60a and 60b are previously joined to the flanges 30a and 30b to which the two segments 20 contact and the projecting pieces 60a and 60b are joined to each other Thereby joining the first segment 10 and the second segment 20 together. At this time, concrete is poured on the upper portions of the projecting pieces 60a and 60b to complete the connection.

The flanges 30a and 30b contacting the first segment 10 and the second segment 20 are provided with projecting pieces 60a and 60b projecting from the lower end of the first segment 10 and the second segment 20b, The shear connection member may be provided on the upper portion of the projecting pieces 60a and 60b coupled to the lower ends of the flanges 30a and 30b so that the first segment 10 and the second segment 20 ) To be formed integrally.

The projecting pieces 60a and 60b are formed in the form of a steel plate and may be formed at the entire length of the flanges 30a and 30b or may be formed at regular intervals. Since the projecting pieces 60a and 60b are formed by projecting from the flanges 30a and 30b and the projecting pieces 60a and 60b are joined by the joint steel plate 61 and concrete is laid on the upper part, The width of the flange 30 of the flange 30 is equal to the total width of the flanges 30a and 30b and the projecting pieces 60a and 60b.

The joining steel plates 61 are respectively formed on the upper and lower portions of the projecting pieces 60a and 60b facing each other so that the projecting pieces 60a and 60b are coupled with each other by using coupling means such as bolts.

5 is a cross-sectional view showing a fourth embodiment of the longitudinal segmented girder of the present invention.

5, the girder 1 includes a first segment 10 and a second segment 20 in which the flange 30 is bisected in the longitudinal direction, and the first segment 10 and the second segment 20, The flanges 30a and 30b of the two segments 20 are brought into contact with each other and the first segment 10 and the second segment 20 are coupled to each other to form the girder 1. The flange 30a The upper portions of the first and second segments 30a and 30b are respectively blocked out to form coupling holes 80a and 80b and the first segment 10 and the second segment 20 are coupled using the coupling holes 80a and 80b .

The flanges 30a and 30b in the coupling holes 80a and 80b are engaged with the coupling holes 80a and 80b in the end direction in which the flanges 30a and 30b are in contact with each other in order to facilitate coupling when engaged with the first segment 10 and the second segment 20. [ 81a and 81b and the steel rods 82 are inserted and coupled such that the engaging holes 81a and 81b pass through each other. That is, the coupling holes 80a and 80b are configured such that the both ends of the steel rod 82 are respectively positioned and the operator can easily perform the fixing operation.

6 is a sectional view showing a fifth embodiment of the longitudinal segmented girder of the present invention.

6, the girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected in the longitudinal direction, and the first segment 10 and the second segment 20, The flanges 30a and 30b of the two segments 20 are brought into contact with each other and the first segment 10 and the second segment 20 are coupled to each other to form the girder 1. The first segment 10 And the upper ends of the ends of the flanges 30a and 30b of the second segment 20 are blocked out to form the steps 90a and 90b and the reinforcing bars 91a and 91b are formed on the steps 90a and 90b, The reinforcing bars 91a and 91b are bonded to each other so that the first segment 10 and the second segment 20 are joined to each other.

The reinforcing bars 91a and 91b may be formed in various shapes such as a straight line, a C-letter shape, and a letter shape, and a C shape is used in the present embodiment. One end of the reinforcing bars 91a and 91b is formed to be embedded in the flanges 30a and 30b so as to be exposed to the steps 90a and 90b, The end portions of the reinforcing bars 91a and 91b are further projected so that the reinforcing bars 91a and 91b are engaged when the flanges 30a and 30b contact each other. This is to increase the joining force and smoothly perform the role of the shear connection member at the time of pouring concrete into the stepped portions 90a and 90b.

In addition, the longitudinal roots 92, in which the reinforcing bars are disposed in the longitudinal direction of the flanges 30a and 30b, are arranged in the space in which the step portions 90a and 90b are formed, thereby facilitating the joining. After that, the concrete is poured into the step.

Fig. 7 is a cross-sectional view showing an embodiment of a longitudinal segmented girder made up of two box girders.

All of the above embodiments can be applied to a case of a girder formed by combining two box girders.

As shown in FIG. 7, the fifth embodiment will be mainly described as follows.

The flange 33 connecting the lower portions of the two box girders is bisected longitudinally so that each box girder is divided into a first segment 10a and a second segment 20a and the first segment 10a and the second segment 20a, The flanges 33a and 33b of the segment 20a are brought into contact with each other and the first segment 10a and the second segment 20a are coupled to each other to form the girder 1. The first segment 10a, And the upper ends of the ends of the flanges 33a and 33b of the second segment 20a are blocked out to form the steps 90a and 90b and the reinforcing bars 91a and 91b are formed on the steps 90a and 90b The reinforcing bars 91a and 91b are overlapped with each other so that the reinforcing bars 91a and 91b are coupled to each other to join the first segment 10a and the second segment 20a.

As described above, after the bottom plate is completed, the vertical segmented girder of the present invention is installed with a package and a railing to complete the movement of the vehicle.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

1: girder
10: 1st segment
20: Second segment
11, 21: oblique abdomen
15, 25: protruding jaw
16, 26: coupling ball
30, 30a, 30b: flange
31, 32:
40: Tension material
50: Steel wire
51, 52:
60a, 60b:
61: bonded steel plate
70: steel rods
80a, 80b:
81a and 81b:
82: Steel rods
90a, 90b:
91a and 91b:
92:
111, 211: Sheath tube
131, 231:
132, 232: Extrude key
132a, 232a: Steel bar

Claims (12)

In a PS-U-shaped girder or a closed box girder having a flange (30) connecting an oblique abdomen (11) (21) and an oblique abdomen,
The girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected longitudinally,
The joining faces of the flanges 30a and 30b to which the first segment 10 and the second segment 20 are coupled are respectively formed with shear keys and are bonded to each other,
The end portions of the first segment 10 and the second segment 20 are formed integrally with the end portions of the oblique wraps 11 and 21 so as to protrude outward from the end portions of the first segment 10 and the second segment 20 Longitudinal segmented girder characterized by. The method according to claim 1,
Characterized in that said shear keys are formed with interlocking stepped portions (131) (231). The method according to claim 1,
Wherein the shear key comprises protruding keys (132) (232) protruding in a lobed configuration and engaged with each other. The method of claim 3,
Wherein reinforcing steel bars (132a) (232a) are formed in the protruding keys (132) and (232). 5. The method according to any one of claims 1 to 4,
Characterized in that the sheath tube is formed through the flanges (30a, 30b) of the first segment (10) and the second segment (20) and the tension member (40) Type girder. 5. The method according to any one of claims 1 to 4,
The first segment 10 and the second segment 20 have partition walls 51 and 52 formed at regular intervals in the interior thereof and are formed so as to penetrate the partition walls 51 and 52 and the oblique abdomen portions 11 and 21. [ (50) is inserted and tightly coupled. delete In a PS-U-shaped girder or a closed box girder having a flange (30) connecting an oblique abdomen (11) (21) and an oblique abdomen,
The girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected longitudinally,
The surfaces of the first segment 10 and the flanges 30a and 30b of the second segment 20 are formed with protruding protrusions 15 and 25 that protrude upward and protrude at predetermined intervals 26 which penetrate through the engaging holes 16 and 26 and are engaged by inserting the steel rods 70 through the engaging holes 16 and 26,
The end portions of the first segment 10 and the second segment 20 are formed integrally with the end portions of the oblique wraps 11 and 21 so as to protrude outward from the end portions of the first segment 10 and the second segment 20 Longitudinal segmented girder characterized by. delete In a PS-U-shaped girder or a closed box girder having a flange (30) connecting an oblique abdomen (11) (21) and an oblique abdomen,
The girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected longitudinally,
The protruding pieces 60a and 60b are formed by being coupled to the lower end of the first segment 10 and the flange 30a of the second segment 20 so as to protrude over the entire length, After the projecting pieces 60a and 60b are coupled to each other by the joint steel plate 61, the concrete is inserted into the upper part of the projecting pieces 60a and 60b,
The end portions of the first segment 10 and the second segment 20 are formed integrally with the end portions of the oblique wraps 11 and 21 so as to protrude outward from the end portions of the first segment 10 and the second segment 20 Longitudinal segmented girder characterized by. In a PS-U-shaped girder or a closed box girder having a flange (30) connecting an oblique abdomen (11) (21) and an oblique abdomen,
The girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected longitudinally,
The upper portions of the flanges 30a and 30b of the first segment 10 and the second segment 20 are blocked out to form coupling holes 80a and 80b. In the coupling holes 80a and 80b, The steel rods 82 are inserted and coupled so as to pass through the engagement holes 81a and 81b after passing through the engagement holes 81a and 81b at the end portions that contact each other,
The end portions of the first segment 10 and the second segment 20 are formed integrally with the end portions of the oblique wraps 11 and 21 so as to protrude outward from the end portions of the first segment 10 and the second segment 20 Longitudinal segmented girder characterized by. In a PS-U-shaped girder or a closed box girder having a flange (30) connecting an oblique abdomen (11) (21) and an oblique abdomen,
The girder 1 comprises a first segment 10 and a second segment 20 in which the flange 30 is bisected longitudinally,
The upper ends of the ends of the flanges 30a and 30b of the first segment 10 and the second segment 20 are blocked out to form the steps 90a and 90b, 91a (91b) are embedded so that the reinforcing bars (91a, 91b) are overlapped with each other,
The end portions of the first segment 10 and the second segment 20 are formed integrally with the end portions of the oblique wraps 11 and 21 so as to protrude outward from the end portions of the first segment 10 and the second segment 20 Longitudinal segmented girder characterized by.

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