KR20170069680A - Corrugated Steel Plate Web-PSC Composite Girder And Construction Method Thereof - Google Patents

Abstract

The present invention relates to an U-shaped U-shaped corrugated steel plate PSC girder for fabricating a PSC girder by synthesizing a corrugated corrugated steel plate and a lower flange concrete plate, and for tensioning and fixing the PSC girder stepwise in correspondence with the load for each construction step, The present invention relates to an upper structure and an opening of a bridge using a U-shaped abdominal corrugated steel sheet PSC girder, and a method of constructing a bridge using U-shaped abdominal corrugated steel sheet PSC girder.
A preferred embodiment of the open U-shaped U-shaped corrugated steel plate PSC girder comprises a lower flange concrete plate composed of plate-shaped concrete having a predetermined width and a certain length in the longitudinal direction and having a certain thickness; A corrugated corrugated steel plate formed of a steel material having a regular corrugated wave shape in the longitudinal direction and composed of two or more rows so that the lower portion is embedded in the lower flange concrete plate; And an upper flange composed of a longitudinal restraining member and / or concrete formed of a steel material for restraining an upper end portion in the longitudinal direction on the upper end portion of the corrugated corrugated steel sheet.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a bridge using a PSC girder and a U-shaped PSC girder, Thereof}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a bridge using an upper U-shaped U-shaped corrugated steel plate PSC girder, an U-shaped U-shaped corrugated steel plate PSC girder, U-shaped abdominal corrugated steel plate PSC girder for fabricating PSC girder by synthesizing corrugated steel plate and lower flange concrete plate and for pulling and fixing the PSC girder stepwise in accordance with the load at construction stage during construction of bridge, The present invention relates to an upper structure of a bridge using a corrugated steel plate PSC girder and a construction method of a bridge using the U-shaped corrugated corrugated steel plate PSC girder.

Prestressed precast concrete (PSC) beam is a replacement of lightweight corrugated steel sheet which occupies 20 to 30% of the weight of the mold. The bending moment is resisted by the upper and lower concrete flanges and the shear force is resisted by the corrugated steel sheet will be. Due to the reduction of the dead load, it is possible to introduce the prestressing efficiently by adopting the corrugated steel plate which can reduce the size of the upper mold design and the bottom and foundation structure and does not resist the axial force. By adopting the corrugated steel plate, There is an advantage that it can be secured. In addition, it is possible to shorten the air and reduce the construction cost by improving the field workability by omitting the abdominal reinforcing bar and concrete work which require the most foam.

Generally, a bridge using a composite beam using a corrugated steel plate is completed by placing a composite beam alternately or alternately in a pier and placing a bottom plate concrete. However, this method has the problem that it is difficult to carry the composite beam to the site and the construction is cumbersome because the large-sized heavy equipment is required when the bridge is placed at the alternate or pier. In particular, there was.

As a technique to be a background of the present invention, Patent Registration No. 0625304 entitled " Method of constructing a prestressed U-shaped steel girder bridge using a prefabricated U-shaped tiller provided with a corrugated steel plate on the abdomen "(Patent Document 1). In the background art, a pair of corrugated steel sheets provided at regular intervals are formed as corrugated sheets, steel plates of a predetermined size are attached to the upper portions of the corrugated sheets at an upper flange, Shaped U-shaped steel girder provided with a lower flange attached thereto so as to be integrally connected to each other by a steel plate of a predetermined size, and a connecting portion is formed between the girder and the girder while installing the manufactured U-shaped steel girder at the fulcrum portion The bottom concrete is laid in a space between the inner side of the corrugated webbing and the upper side of the lower flange and the top portion of the concrete including the upper flange is laid thereon while a load is applied to the bridge, , That is, at the point where the moment is generated, on the lower part of the bridge upper concrete, A sheath for interconnecting the fixing ports of the fixing device is installed in the bottom portion of the bottom concrete or the upper portion of the bridge, while a pair of fixing devices are provided at the upper portion of the bottom concrete, A method of installing a prestressed U-shaped steel girder by inserting a PS steel wire and fixing it to a fixing apparatus by introducing a prestress "is proposed.

However, the background art has a problem in that it can not effectively resist an acting load that varies depending on a construction step.

Patent Registration No. 0625304 "Method of constructing a prestressed U-shaped steel girder bridge using a prefabricated U-shaped tie girder provided with a corrugated steel plate"

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a composite concrete slab, comprising the steps of combining a corrugated steel plate and a lower flange concrete plate, , U-shaped abdominal corrugated steel plate PSC girder, U-shaped girder corrugated corrugated steel plate Top structure and opening of bridge using PSC girder The present invention provides a method of constructing a bridge using a corrugated steel plate PSC girder.

The present invention relates to a lower flange concrete plate comprising a plate-like concrete having a predetermined thickness and a predetermined length in a transverse direction and a predetermined length in a longitudinal direction; A corrugated corrugated steel plate formed of a steel material having a regular corrugated wave shape in the longitudinal direction and composed of two or more rows so that the lower portion is embedded in the lower flange concrete plate; And an upper flange composed of a longitudinal restraining member and / or concrete formed of a steel material for restraining the upper end portion in the longitudinal direction on the upper end portion of the corrugated corrugated steel sheet.

In addition, a middle PC stranded wire fixing block is formed by protruding upward from an upper surface of a point spaced apart from the longitudinally opposite ends of the lower flange concrete plate by a predetermined distance, and a plurality of middle PC stranded wire fixing blocks Is provided with an intermediate sheath tube of a U-shaped bodyshell corrugated steel plate PSC girder.

In addition, at least one bottom plate sheath pipe passing through the entire longitudinal direction of the lower flange concrete plate is embedded, and a bottom plate PC stranded wire is inserted into the bottom plate sheath pipe to connect the longitudinally opposite ends of the lower flange concrete plate And the tensile fixing is carried out at the U-shaped U-shaped corrugated steel plate PSC girder.

Also, it is intended to provide a U-shaped U-shaped corrugated steel plate PSC girder characterized in that a PC strand is inserted into the middle portion sheath tube and tensile is fixed in each pair of intermediate strands of the PC stranded wire fixture.

In addition, two or more abdominal corrugated steel plates are mutually coupled by a transverse bracing made of a steel having one cross section of H, c, and a cross section at an appropriate interval in the longitudinal direction between the corrugated corrugated steel sheets having two or more rows An U-shaped U-shaped corrugated steel plate PSC girder is to be provided.

In addition, an alternating diaphragm was installed inside the alternating upper and lower ends of the open U-shaped abdominal corrugated steel plate PSC girder installed on the alternation, and the mid-portion PC strand was inserted through the inside of the intermediate sheath tube, To provide an upper structure of a bridge using an open U-shaped U-shaped corrugated steel plate PSC girder, which extends to the upper outer side of the diaphragm and is tensile-fixed.

In addition, in each of the spans, the U-shaped boulevard corrugated steel plate PSC girder installed on each alternating and piering angle independently from each other on each of the upper portions of each pier of the bridge girder, A continuous stiffener for connecting the U-shaped stiffened corrugated steel plate PSC girder to each other is installed, and the middle stiffener is inserted through the inside of the stiffener disposed in the lower flange concrete plate for each stiffener Wherein the intermediate U-shaped PC stranded wire is arranged so as to extend through the upper portion of each of the two continuous-portion secondary diaphragms so that the whole of the intermediate U-shaped PC stranded wire is continuous as a whole over a plurality of multi- And the upper structure of the bridge using the steel plate PSC girder.

In addition, in the moment section which is a predetermined length of both the left and right spans with respect to the continuous focal point at each successive fulcrum portion on each pier, an upper flange or a longitudinal restraint member of the opening U-shaped abdominal corrugated steel plate PSC girder, The upper slab of the upper section of the moment section is installed first and the upper slab of the upper section of the upper section of the section of the upper section is tensioned and the upper slab of the lower section of the section of the upper section of the upper section, The present invention provides an upper structure of a bridge using an open U-shaped U-shaped corrugated steel plate PSC girder, which is continuously connected to an upper slab of each continuous point and a parent station section on an upper flange or a longitudinal restraining member of a steel plate PSC girder .

(A) a plurality of bottom plate sheath pipes penetrate in the longitudinal direction and protrude upward from an upper surface of a point spaced apart from the both ends in the longitudinal direction at a predetermined distance to form a middle PC strand fixing block, A lower flange concrete plate formed by embedding a plurality of intermediate sheath pipes connecting the middle PC shear line fixing blocks of the lower flange concrete plate; Shaped U-shaped corrugated steel plate composed of a steel material and having a curved shape in a regular shape in the longitudinal direction and having two or three lower portions spaced apart from each other in the width direction of the lower flange concrete plate, A step of preliminarily preparing a steel sheet PSC girder and inserting a PC stranded wire into a bottom plate sheath pipe or a part of an intermediate sheath pipe of an opening type U-shaped corrugated corrugated steel sheet PSC girder and performing tensile fixing; (b) constructing an alternation; (c) laying a U-shaped abdominal corrugated steel plate PSC girder on both alternations; (d) simultaneously pouring the upper slab concrete on the alternating diaphragm at both longitudinal ends of the U-shaped U-shaped corrugated steel plate PSC girder and the upper portion thereof; (e) inserting and stretching the PC stranded wire into a part of the remaining bottom plate sheath pipe and the intermediate sheath pipe in which the PC stranded wire of the U type U-shaped PSC steel girder is not inserted; (f) inserting an intermediate PC strand through the entire length of the intermediate sheath tube where the PC strand is not inserted and extending to the diaphragm at both ends, and performing tensile fixation from the outside of both diaphragms; and (g) placing concrete on top of the upper rear wall by alternately pouring the concrete into the concrete, thereby providing a method of constructing the bridge using the open U-shaped bare corrugated steel plate PSC girder.

In addition, in step (a), an upper flange is formed on the upper portion of the U-shaped corrugated corrugated steel plate PSC girder, and the upper U-shaped corrugated corrugated steel plate PSC girder is provided with an upper flange. do.

Also, in the step (a), it is desired to provide a method of constructing a bridge using an open U-shaped bare corrugated steel plate PSC girder characterized in that the girder bracing is configured to connect the girder corrugated steel plate and the corrugated corrugated steel plate.

(A) A plurality of bottom plate sheath pipes penetrate in the longitudinal direction and protrude upward from an upper surface of a point spaced apart from the both ends in the longitudinal direction at a predetermined distance, A lower flange concrete plate formed by embedding a plurality of intermediate sheath pipes which form strand fixing blocks and connecting the middle PC strand fixing blocks on both sides; Shaped U-shaped corrugated steel plate composed of a steel material and having a curved shape in a regular shape in the longitudinal direction and having two or three lower portions spaced at regular intervals in the width direction of the lower flange concrete plate, A step of preliminarily preparing a steel sheet PSC girder and inserting a PC stranded wire into a bottom plate sheath pipe or a part of an intermediate sheath pipe of an opening type U-shaped corrugated corrugated steel sheet PSC girder and performing tensile fixing; (B) alternating and piercing; (C) laying alternating U-shaped U-shaped corrugated steel plate PSC girders on each span or on a pier; (D) simultaneously constructing the upper slab and the continuous portion diaphragm of the consecutive point portion of the parent moments section at the consecutive point parent moments section of each pier; (E) Placing the alternating diaphragm at the end of the PSC girder at the end of the upper slab concrete and the alternating-open U-shaped corrugated corrugated steel plate at the portion excluding the upper slab of the consecutive fulcrum section of the consecutive fulcrum by pouring concrete; (F) inserting and stretching a PC stranded wire into a part of a bottom plate sheath pipe and a middle sheath pipe that are not inserted with the PC stranded wire of the U-shaped abdominal corrugated steel sheet PSC girder; (G) Insert the mid-PC strand through the entire length of the mid-sheath tube where no PC strand is inserted and extend both ends to the alternating diaphragm or continuous diaphragm, respectively. Causing tensile fixation outside the diaphragm; And (H) placing concrete on the rear upper wall of the alternating upper part. The present invention is to provide a method of constructing a bridge using the U-shaped abdominal corrugated steel plate PSC girder.

In the step (D), a PC strand is disposed in the interior of the upper slab of the consecutive-portion-parent-moments section, and tensile-fixing is performed after curing. A bridge using a PSC girder To provide a method of construction.

In addition, in the step (A), it is possible to provide a method of constructing a bridge using an open U-shaped boulevard corrugated steel plate PSC girder characterized in that an upper flange is formed on the upper portion of the corrugated corrugated steel plate of the open U- do.

In addition, in the step (A), it is desired to provide a method of constructing a bridge using an open U-shaped girder PSC girder, wherein a girder bracing is formed to connect the girder corrugated steel plate and the corrugated corrugated steel plate.

The U-shaped abdominal corrugated steel plate PSC girder of the present invention, the U-shaped abdomen corrugated steel plate upper structure and the open U-shaped corrugated corrugated steel sheet using the PSC girder The method of constructing the bridge using the PSC girder comprises the abdomen corrugated steel plate and the lower flange concrete plate And the upper concrete slab is installed after the composite beam is installed separately to reduce its own weight, thereby improving the handling and handling. By tensioning and fixing the strand in a stepwise manner corresponding to the load at each construction step, Can be very useful effect.

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 showing an embodiment of an open U type bimorph corrugated steel plate PSC girder of the present invention.
2 is a cross-sectional view taken along line AA of FIG.
3 is a cross-sectional view taken along line BB in Fig.
4 is a cross-sectional view showing various embodiments of an open U type bimorph corrugated steel plate PSC girder.
FIG. 5 is a view showing a first embodiment of a method of constructing a bridge using an open U-shaped girder PSC girder of the present invention in order of construction.
Fig. 6 is a view showing a second embodiment of a method of constructing a bridge using an open U-shaped abdominal corrugated steel plate PSC girder in the order of construction.
FIG. 7 is another embodiment of 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.

Fig. 1 is a perspective view showing an embodiment of an open U type abdominal corrugated steel sheet PSC girder, Fig. 2 is a sectional view taken along line AA in Fig. 1, and Fig. 3 is a cross- to be.

The open U-shaped abdominal corrugated steel plate PSC girder 1 is composed of a lower flange concrete plate 11 composed of plate-like concrete having a predetermined width and a certain length in the longitudinal direction and having a predetermined thickness in the transverse direction; Shaped steel plate 12 formed of a steel material having a regular corrugated wave shape in the longitudinal direction and composed of two or more rows so that the lower portion is embedded in the lower flange concrete plate 11, A longitudinal restraining member 121 formed of a steel material for restraining the upper end in the longitudinal direction or an upper flange 13 made of concrete may be formed on the upper end of the steel plate 12. The longitudinal restraint member 121 and the upper flange 13, (13) may be formed.

In addition, the PC flange concrete plate 11 is provided with at least one pair of intermediate portions (not shown) on both sides of the lower flange concrete plate 11, One or more intermediate sheath pipes 113 may be disposed so as to protrude from the PC strand fixing block 115 and pass through the middle PC strand fixing block 112 of each pair in a lump, The PC stranded wire 115 may be inserted into the sheath pipe 113 and tensioned and fixed at each pair of the middle PC stranded wire fixing blocks 112. [

Particularly, at least one bottom plate sheath pipe 111 passing through the entire longitudinal direction of the lower flange concrete plate 11 is embedded and a bottom plate PC stranded wire 115 is inserted into the bottom plate sheath pipe 111 And may be tensile fixed at the longitudinally opposite ends of the lower flange concrete plate 11.

In addition, two or more lines of the corrugated corrugated steel plates 12 may be sandwiched between the corrugated corrugated steel plates 12 of two or more lines by means of the cross girder bracing 14 formed of a steel having one cross section of H, May be mutually coupled.

In the upper structure of the bridge using the open U-shaped boulevard corrugated steel plate PSC girder of the present invention, in the single span bridge between the simple beams having only two alternations, the open U-shaped boulevard corrugated steel plate PSC girder 1, The alternate diaphragm 4a is provided inside the alternating upper ends of the intermediate portion sheath pipe 113 and the both ends of the intermediate portion PC strand 116 inserted through the inside of the intermediate sheath pipe 113 are connected to both alternate diaphragms 4a To the outer side of the upper portion of the frame.

In addition, in bridges of multispaced continuous structure system in which two spans or more are continuous, the openings which are independently installed on each alternate bridge and bridge piers at each span, the U-shaped boulevard corrugated steel plate PSC girder 1, And continuous span diaphragms (4c) for connecting the span-shaped openings of the U-shaped corrugated corrugated steel plate PSC girder (1) to each other in the space between the sparse corrugated corrugated steel plate PSC girders (1) The middle PC strand 116 inserted through the inside of the intermediate portion sheath tube 113 disposed in the lower flange concrete plate 11 of the lower portion of the lower portion flange concrete plate 11 is extended to penetrate the upper portion of each of the two continuous continuous portion diaphragms 4c The intermediate stiffener 116 can be made to have an effect of continuing as a whole over a plurality of multiple spans longer than two spans or an entire section of the bridge, Shaped PSC girder 1 on the upper flange 13 or the longitudinal restraint member 121 of the opening U-shaped bare corrugated steel plate PSC girder 1 in a moment of the predetermined length of both left and right spans, A plurality of upper PC strands 118 are disposed in advance in the upper slab 4b of the upper section of the upper section of the upper section of the upper section of the section of the upper section slab 4b, The upper slab may be connected to the upper flange 13 or the longitudinal restraint member 121 of the opening U-shaped bodyshell steel plate PSC girder 1 so as to be continuous with the respective continuous point uppermost slabs 4b.

The upper structure of the bridge using the U-shaped U-type abdominal corrugated steel plate PSC girder (1) and the U-shaped U-shaped corrugated corrugated steel sheet PSC girder will be described in detail with reference to the drawings. I will explain it to you.

The first embodiment of the method of constructing a bridge using an open U type bimorph steel plate PSC girder is an example of a case of a short span bridge.

In the first embodiment of a method of constructing a bridge using an open U-shaped U-shaped corrugated steel plate PSC girder, first, as shown in FIG. 1, an open U-shaped girder PSC girder 1 is manufactured.

2, a lower flange concrete plate 11 is formed on the lower portion of the U-shaped bodyshell corrugated steel plate PSC girder 1 and spaced apart from the upper portion of the lower flange concrete plate 11 by a predetermined distance, 12) are formed so as to have a U-shaped cross section with an open upper part, thereby reducing the weight of the U-shaped cross section, thereby improving the handling and handling.

As shown in FIG. 3, the lower flange concrete plate 11 is constructed so that a plurality of bottom plate sheath pipes 111 are embedded so as to penetrate the entire U-shaped U-shaped corrugated steel plate PSC girder 1 in the longitudinal direction. That is, the bottom plate sheath pipe 111 is formed so as to penetrate in the longitudinal direction of the lower flange concrete plate 11 so that both ends thereof are exposed at both end portions of the lower flange concrete plate 11.

In addition, an intermediate PC stranded wire fixing block 112 is formed by protruding upward from an upper surface of a point spaced apart from the both ends in the longitudinal direction of the lower flange concrete plate 11 by a predetermined distance.

The middle portion sheath pipe 113 has a central portion passing through a central portion of the lower flange concrete plate 11 and connecting the middle portion PC strand fixing blocks 112 on both sides to the outside of the middle middle PC strand fixing block 112 And the end portion is embedded so as to be exposed.

The intermediate PC sheath line fixing block 112 may be formed in various shapes and the outer side surface may have a shape perpendicular to the intermediate sheath tube 113 depending on the embedding shape of the intermediate sheath tube 113. [ As shown in Fig.

The bottom plate sheath pipe 111 and the intermediate portion sheath pipe 113 are each formed of a plurality of fixing holes, and a separate fixing hole is formed at each end of the bottom sheet sheath pipe 111 and the middle portion sheath pipe 113, .

When the open U-shaped bodyshell corrugated steel plate PSC girder 1 is manufactured, a bottom plate PC strand 115 is inserted into a plurality of bottom plate sheath pipes 111 or a part of the intermediate portion sheath pipe 113, Settle in.

4 is a cross-sectional view showing various embodiments of an open U type bimorph corrugated steel plate PSC girder.

The corrugated corrugated steel plate 12 is made of a steel material having a curved shape in a longitudinally regular shape and two or three of the corrugated corrugated steel plates 12 are spaced at a predetermined interval in the width direction of the lower flange concrete plate 11, (11).

As shown in FIG. 4D, two of the bare corrugated steel plates 12 may be formed in parallel to form a serial box girder, and three parallel girders may be formed as shown in FIG. 4E. .

At this time, in order to restrain the lower end portion in the longitudinal direction and to enhance the effect of the synthesis with the lower flange concrete plate 11, a lower end portion of the abdominal corrugated steel plate 12 is made of a variety of members such as angles, 4A and FIG. 4B and FIG. 4B as in FIG. 4A in order to constrain the upper end portion in the longitudinal direction and to facilitate the synthesis with the concrete, as well as the upper end portion of the bare corrugated steel plate 12, 4c, a U-shaped channel or the like can be used as the longitudinal restraining member 12, and the connection with the abdominal corrugated steel plate 12 can be combined by various known methods such as welding, bolting or the like.

The longitudinal restraint members 121 having various shapes as described above can be constituted.

As described above, the open U type bimorph corrugated steel sheet PSC girder 1 is composed of only the lower flange concrete plate 11 and the bare corrugated steel plate 12, and the upper slab concrete 4 is laid on the corrugated corrugated steel plate 12, The upper flange 13 may be formed on the upper portion of the bare corrugated steel plate 12 of the U-shaped U-shaped corrugated steel plate PSC girder 1 and the upper flange 13 may be formed on the upper flange 13, A plurality of shear connectors 131 having various shapes may be formed on the upper portion of the upper slab concrete to serve as shear connectors when the upper slab concrete is formed.

It is also possible to support and reinforce the corrugated corrugated steel plate 12 by configuring the crossbar bracing 14 to connect the corrugated corrugated steel plate 12 and the corrugated corrugated steel plate 12. It is preferable that the cross beam bracing 14 is coupled in an x-shape so as to connect the corrugated corrugated steel plate 12 and the corrugated corrugated steel plate 12 using various members such as angles.

Thereafter, as shown in Fig. 5A, the alternation (2) is constructed (b).

At the time of construction of the alternation (2), work is done except the rear wall at the upper end of the alternation (2), and the back wall is constructed after the strand is fixed stepwise.

Thereafter, as shown in Fig. 5B, an opening U-shaped bare corrugated steel plate PSC girder 1 is installed on the upper portion of the alternation 2 (c).

In this step, in step (a), a bottom plate PC strand 115 is inserted into a plurality of bottom plate sheath pipes 111 or a part of the intermediate sheath pipe 113, and the opening U- Wave PSC girder 1 is to be installed.

Thereafter, as shown in FIG. 5C, the upper slab concrete 4 is installed (d).

When the upper slab concrete (4) is poured, the alternating diaphragms (4a) at the longitudinally opposite ends of the U-shaped U-shaped corrugated steel plate PSC girder (1) are simultaneously laid.

Then, the two-step tension and settlement of the strand is performed (e).

In step (a), a bottom plate PC strand 115 is inserted into a plurality of bottom plate sheath pipes 111 or a part of the intermediate sheath pipe 113 to be tensioned and fixed, The bottom plate PC strand 115 of the opening U-shaped abdominal corrugated steel sheet PSC girder 1 is inserted into the remaining bottom plate sheath pipe 111 and the intermediate sheath pipe 113 in which the bottom plate PC strand 115 115) is inserted and tensioned and fixed.

Thereafter, as shown in FIG. 5D, the three-step stretching and fixing of the strand is performed (f).

In the above step, the middle PC strand 116 is inserted so as to extend to the diaphragm 4a at both ends through the entire portion of the intermediate portion sheath pipe 113 in which the bottom plate PC strand 115 is not inserted, So that tensile fixation is performed outside the diaphragm 4a.

That is, in the present invention, for example, if a total of eleven intermediate sheath pipes 113 are formed, three of them are inserted into the bottom floor sheath pipe 111 at the step (a) And then the upper slab concrete 4 is placed thereon, followed by tensile fixation in the step (e), and the remaining four are subjected to tensile fixation in advance by inserting the plate PC strand 115 in the intermediate sheath tube 113 The double diaphragm 4a is installed together with the upper slab concrete 4 and then passes through the entire portion of the intermediate sheath pipe 113 and extends to the alternate diaphragm 4a at both ends So that the tensile fixing is performed at the rear portion of the alternate diaphragm 4a of the two alternate diaphragms 4a, so that the strand is tensioned and fixed in three steps in total, corresponding to the working load.

Finally, as shown in FIG. 5E, the rear wall 21 of the upper part of the alternation 2 is installed by installing the concrete.

Fig. 6 is a view showing a second embodiment of a method of constructing a bridge using an open U-shaped abdominal corrugated steel plate PSC girder in the order of construction.

A second embodiment of a method of constructing a bridge using an open U-shaped abdominal corrugated steel plate PSC girder is an embodiment in the case of a two span bridge.

In the second embodiment of the present invention, first, an open U-shaped bodyshell corrugated steel plate PSC girder 1 is produced as in the first embodiment.

First, the U-shaped abdominal corrugated steel plate PSC girder 1 is manufactured for each span. In the first embodiment, the bottom U-shaped corrugated steel plate PSC girder 1 is manufactured to have the same shape and various embodiments as the first embodiment. However, in the first embodiment, both ends of the bottom plate sheath pipe 111 and the intermediate portion sheath pipe 113 However, in the second embodiment, the fixing port is not formed at the end portion of the continuous U-shaped bodyshell corrugated steel plate PSC girder 1 on the side of the continuous point portion.

When the open U-shaped bodyshell corrugated steel plate PSC girder 1 is manufactured, a bottom plate PC strand 115 is inserted into a plurality of bottom plate sheath pipes 111 or a part of the intermediate portion sheath pipe 113, Settle in.

Thereafter, as shown in FIG. 6A, the alternation 2 and the bridge 3 are constructed (B).

At the time of construction of the alternation (2), work is done except the rear wall at the upper end of the alternation (2), and the back wall is constructed after the strand is fixed stepwise.

The bridge pier 3 is provided with a temporary temporary support 31 at the upper end thereof to facilitate the installation of the U-shaped bare corrugated steel plate PSC girder 1 and to be supported by the permanent support 32 at a later stage.

Thereafter, as shown in Fig. 6B, an open U-shaped bodyshell corrugated steel plate PSC girder 1 is placed on alternating 2 or bridge pier 3 at each span C (C).

The PSC girder 1 is supported on the temporary support 31 when the PSC girder 1 is installed on the bridge pier 3.

Subsequently, as shown in FIG. 6C, the upper portion slab 4b and the continuous portion diaphragm 4c of the consecutive point portion and the upper portion of the consecutive point portion of the consecutive point portion 3 are simultaneously constructed (D).

Concrete is placed in the upper part of the consecutive point part of the pier ment 3 above the bridge pier 3 to form the upper slab 4b of the consecutive point part of the upper section. At this time, the U-shaped abdomen corrugated steel plate PSC girder The concrete is simultaneously poured into the end portion of the diaphragm 1 to form the continuous portion diaphragm 4c.

Particularly, when the upper slab 4b is formed in the consecutive point portion parent moments section, the PC stranded wire 118 is disposed in advance in the longitudinal direction of the opening U-shaped abdominal corrugated steel plate PSC girder 1, The PC stranded wire 118 may be subjected to tensile fixation after the curing of the slab 4b.

Thereafter, as shown in FIG. 6D, the concrete is poured to form the upper slab concrete 4 (E).

At this time, the upper slab concrete 4 is formed at a portion excluding the upper slab 4b of the consecutive point portion parent moments section. At this time, concrete is inserted into the end portion of the U-shaped abdominal corrugated steel plate PSC girder 1 having the alternate (2) So that the alternate diaphragm 4a is formed at the same time.

Thereafter, the strand of the opening U-shaped bare corrugated steel plate PSC girder 1 is tensioned and fixed at two stages (F).

In step (A), a bottom plate PC strand 115 is inserted into a plurality of bottom plate sheath pipes 111 or a part of the intermediate sheath pipe 113 to be tensioned and fixed. In step (A) The bottom plate PC strand 115 of the opening U-shaped abdominal corrugated steel sheet PSC girder 1 is inserted into the remaining bottom plate sheath pipe 111 and the intermediate sheath pipe 113 in which the bottom plate PC strand 115 115) is inserted and tensioned and fixed.

Thereafter, as shown in FIG. 6E, tensile and fixation of the strand of the open U-shaped girder PSC girder 1 is performed (G).

In the above step, both ends of the intermediate sheath pipe 113 are inserted into the alternate diaphragm 4a or the continuous diaphragm 4c, respectively, The middle PC strand 116 is inserted so as to perform tensile fixing at the outside of the alternate diaphragm 4a or continuous diaphragm 4c.

Finally, as shown in FIG. 6F, concrete is installed to complete the rear wall 21 of the upper part of the alternation 2 (H).

FIG. 7 is another embodiment of FIG.

As shown in Fig. 7, even when the bridge is two or more spans, the order is the same as the order of the two span bridges.

A method of constructing a bridge using an open U-shaped boulevard corrugated steel plate PSC girder, an open U-shaped corrugated corrugated steel sheet PSC girder, and a U-shaped corrugated corrugated corrugated steel sheet PSC girder, Flange concrete plate is synthesized and the upper concrete slab is installed separately after construction of the composite beam to reduce its own weight to improve the handling and handling. By stretching and stiffening the strand in a stepwise manner corresponding to the load at each construction step, There is a very useful effect that can resist effectively.

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: Open U-shaped abdominal corrugated steel plate PSC girder
11: Lower flange concrete plate
111: Floor plate sheath tube
112: middle PC strand settling block
113: intermediate part sheath tube
115: bottom plate PC wire
116: Intermediate PC Strand
118: Top PC Strand
12: abdominal corrugated steel plate
13: Upper flange
14: crossbar bracing
2: Shift
21: back wall
3: Pier
31: Temporary Stand
32: Permanent support
4: Upper slab concrete
4a: Alternating diaphragm
4b: Upper slab of consecutive point part
4c: continuous fascia diaphragm

Claims (15)

A lower flange concrete plate 11 composed of a plate-like concrete having a predetermined width and a predetermined length in the longitudinal direction in a transverse direction;
A corrugated steel plate (12) formed of a steel material having a regular corrugated wave shape in the longitudinal direction and composed of two or more rows so that the lower portion is embedded in the lower flange concrete plate (11);
And an upper flange (13) made of concrete and / or a longitudinal restraining member (121) formed of a steel material for restraining an upper end in the longitudinal direction on the upper end portion of the abdominal corrugated steel plate (12) Steel plate PSC girder. The method according to claim 1,
An intermediate PC stranded wire fixing block 112 protruding upward from an upper surface of a point spaced apart from the longitudinally opposite ends of the lower flange concrete plate 11 by a predetermined distance,
And a plurality of intermediate portion sheath pipes (113) collectively passing through the middle portion PC strand fixing block (112) on both sides are disposed. The method according to claim 1,
One or more bottom plate sheath pipes (111) passing through the entire longitudinal direction of the lower flange concrete plate (11) are embedded,
Wherein a bottom plate PC stranded wire (115) is inserted into the bottom plate sheath pipe (111) to tensile fix both longitudinal ends of the lower flange concrete plate (11). The method of claim 2,
Wherein the PC stranded wire (115) is inserted into the middle portion sheath pipe (113) and tensioned at each pair of intermediate PC stranded wire fixing blocks (112). The method according to claim 1,
Two or more abdominal corrugated steel plates 12 are formed by a cross girder bracing 14 composed of a section steel having one cross section of H, Wherein the U-shaped U-shaped corrugated steel sheet PSC girder is joined to the U-shaped U-shaped corrugated steel sheet PSC girder. In an upper structure of a bridge in a short-span bridge between simple beams existing in two alternations using the U-shaped bare-form corrugated steel plate PSC girder 1 of claims 2 to 5,
An alternate diaphragm (4a) is installed inside the upper end of the alternating (2) on both sides of the U-shaped U-shaped corrugated steel plate PSC girder (1)
And an intermediate portion PC stranded wire (116) is inserted through the inside of the intermediate sheath pipe (113), and both ends thereof are extended to the upper outer side of both alternate diaphragms (4a) Upper Structure of Bridges using PSC Girder of Abutment Wave Steel Plate. An upper structure of a bridge in a bridge of a multi-span continuous structure system in which two or more spans are continuous by using the U-shaped U-shaped corrugated steel plate PSC girder (1) of any one of claims 2 to 5,
Shaped U-shaped bodyshell PSC girder 1 installed on each alternation 2 and bridge pier 3 independently for each span at each point on each bridge pier 3 of the U-shaped bifurcated corrugated steel PSC girder 1, The continuous fulcrum diaphragms 4c for connecting the U-shaped corrugated corrugated steel plate PSC girder 1 to each other in the space between the steel plate PSC girders 1 are respectively installed and the lower flange concrete plates The intermediate stiffener 116 extending through the inside of the intermediate portion sheath pipe 113 disposed in the intermediate portion sheath pipe 11 is extended from the upper portion of each successive fulcrum portion diaphragm 4c of both the staple fulcrums 4c, The upper structure of a bridge using an open U-shaped bare-core corrugated steel plate PSC girder characterized in that the PC stranded wire (116) is continuous in total over a plurality of multiple spans of two or more spans or an entire section of the bridge. The method of claim 7,
The upper flange 13 of the U-shaped bare-form steel plate PSC girder 1 is bent in a predetermined length of a predetermined length of both left and right spans around the continuous focal point at each successive fulcrum portion on each pier 3, A plurality of upper PC strands 118 are arranged in advance in the upper slab 4b of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part slab 4b, The remaining upper slabs of the midpoint sections of the span of each span are placed on the upper flange 13 or the longitudinal restraint member 121 of the open U-shaped bodyside corrugated steel sheet PSC girder 1 at the respective continuous point parent section section upper slabs 4b. The upper structure of the bridge using the U-shaped bare corrugated steel plate PSC girder. (a) a plurality of bottom plate sheath pipes (111) penetrate in the longitudinal direction and protrude upward from an upper surface of a point spaced apart from the both ends in the longitudinal direction at a predetermined distance, and the middle PC strand fixing block A lower flange concrete plate 11 formed by embedding a plurality of intermediate portion sheath pipes 113 connecting the middle portion PC strand fixing blocks 112 on both sides; A corrugated steel plate 12 made of a steel material and having a curved shape in a regular shape in the longitudinal direction and spaced apart at regular intervals in the width direction of the lower flange concrete plate 11 to form two or three lower end portions; And the bottom plate sheath pipe 111 of the U-shaped bumper corrugated steel plate PSC girder 1 or a part of the intermediate sheath pipe 113 is attached to the bottom plate PC A step of inserting a tensile cord 115 into the strand 115;
(b) constructing an alternation (2);
(c) laying the U-shaped abdominal corrugated steel plate PSC girder 1 on both alternations 2;
(d) simultaneously pouring the upper slab concrete (4) on the alternate diaphragm (4a) at both longitudinal end portions of the U-shaped U-shaped corrugated steel plate PSC girder (1);
(e) U-shaped U-shaped corrugated corrugated steel sheet PSC girder 1 is attached to the bottom plate PC sheath pipe 111 and the middle portion sheath pipe 113 in which no PC stranded wire 115 is inserted, 115) and tensile fixation;
(f) The middle PC strand 116 is inserted so as to extend through the entire portion of the intermediate portion sheath pipe 113 into which the bottom plate PC strand 115 is not inserted and extend to both alternate diaphragms 4a, Causing a tensile fixation outside the diaphragm (4a);
(g) placing the rear wall (21) at the upper end of the alternation (2) by pouring concrete into the U-shaped girder. The method of claim 9,
In step (a)
Wherein the upper flange (13) is formed on the upper portion of the bare corrugated steel plate (12) of the U-shaped U-shaped PSC girder (1). The method of claim 9,
In step (a)
A method for constructing a bridge using an open U-shaped bare corrugated steel plate PSC girder characterized in that a cross bracing (14) is formed to connect the corrugated steel plate (12) and the corrugated corrugated steel plate (12). A plurality of bottom plate sheath pipes 111 are inserted in the longitudinal direction and are protruded upward from an upper surface of a point spaced apart from the both ends in the longitudinal direction at a predetermined distance, and the middle PC strand fixing block 112 A lower flange concrete plate 11 formed by embedding a plurality of intermediate portion sheath pipes 113 connecting the middle portion PC strand fixing blocks 112 on both sides; A corrugated steel plate 12 made of a steel material and having a curved shape in a regular shape in the longitudinal direction and spaced apart at regular intervals in the width direction of the lower flange concrete plate 11 to form two or three lower end portions; The U-shaped abdominal corrugated steel plate PSC girder 1 having the U-shaped corrugated corrugated corrugated steel sheet PSC girder 1 is preliminarily manufactured and the bottom plate sheath pipe 111 or the intermediate portion sheath pipe 113 of the U- (115) and performing tensile fixing;
(B) alternating (2) and pier (3);
(C) laying an open U-shaped abdominal corrugated steel plate PSC girder 1 over alternating 2 or pier 3 at each span;
(D) simultaneously constructing the upper slab (4b) and the continuous fulcrum diaphragm (4c) of the consecutive fulcrum section of the consecutive fulcrum section at the consecutive fulcrum section of each pier (3);
(E) Concrete is laid on the continuous section. Permanent section of the section. Excluding the upper slab (4b), the upper slab concrete (4) and the alternating (2) Simultaneously pouring the flame (4a);
(F) Bottom plate of the open U-shaped bell-shaped corrugated steel plate PSC girder 1 A bottom plate PC strand (not shown) is welded to the remaining bottom plate sheath pipe 111 and the intermediate sheath pipe 113, 115) and tensile fixation;
(G) so that both end portions pass through the entire portion of the intermediate portion sheath pipe 113 in which the bottom plate PC strand 115 is not inserted and extend to the alternate diaphragm 4a or the continuous diaphragm 4c, Inserting the secondary PC strand 116 and causing tension fixation outside the alternating diaphragm 4a or the continuous fulcrum diaphragm 4c;
(H) concrete to construct a rear wall (21) at an upper end of the alternation (2). The method for constructing a bridge using the U-shaped abdominal corrugated steel plate PSC girder. The method of claim 12,
In step (D)
The PC stranded wire (118) is arranged in advance inside the upper slab (4b) of the consecutive-portion-part-parent-section section and is subjected to tensile fixation after curing. Construction of a bridge using a PSC girder Way. The method of claim 12,
In step (A)
Wherein the upper flange (13) is formed on the upper portion of the bare corrugated steel plate (12) of the U-shaped U-shaped PSC girder (1). The method of claim 12,
In step (A)
A method for constructing a bridge using an open U-shaped bare corrugated steel plate PSC girder characterized in that a cross bracing (14) is formed to connect the corrugated steel plate (12) and the corrugated corrugated steel plate (12).

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