KR20070062746A - Temporary construction system using a steel pipe structure - Google Patents

Abstract

A temporary construction system using a round steel pipe is provided to install a long-span temporary structure stably and economically by installing round steel pipes or horizontal connection members on the upper part of a lower structure containing temporary bents in the longitudinal direction and installing a deck plate containing perforated plates on the upper part of the round steel pipes. The temporary construction system using a round steel pipe is completed by installing an upper structure(300) between a lower structure(100) containing temporary bents installed on the ground at regular intervals in the longitudinal direction and a deck structure(200) containing perforated plates on the lower structure, wherein the upper structure contains round steel pipes(320) installed in a row on the upper part of the lower structure by fixtures composed of bolts and nuts and extended in the longitudinal direction, and horizontal connection members provided with steel bars coupled in the round steel pipes by connectors composed of nuts between the sides of the inner round steel pipes to restrain the round steel bars in the transverse direction.

Description

Temporary Construction System Using a Steel Pipe Structure}

1 shows a temporary system using a conventional circular steel pipe.

2A and 2B show a perspective view and a cross-sectional view of Embodiment 1 of the hypothesis system of the present invention.

Figure 3 shows the transverse rib installation of the present invention.

4A, 4B and 4C show a perspective view, a point cross section and a center cross section of a second embodiment of the hypothesis system of the present invention.

5A and 5B show a perspective view and a cross-sectional view of Embodiment 3 which is a hypothesis system of the present invention.

6A and 6B show a perspective view and a cross-sectional view of Example 4 which is a hypothesis system of the present invention.

7A and 7B are cross-sectional views of the point portion and the center portion of the fifth embodiment of the hypothesis system of the present invention.

8 shows a front view of Embodiment 6 which is a hypothesis system of the present invention.

<Description of the symbols for the main parts of the drawings>

100: lower structure 200: top structure

300: upper structure 320: circular steel pipe (Example 1)

340: lateral connecting member 350: lateral rib

360: inner rib 370: concrete for tension fixing box

400: tension means 410: transverse through member (Example 2)

420: tension reset box 430: tension

500: arch type reinforcing means 510: transverse through member (Example 3)

520: arch type reinforcing member 530: vertical load transfer member

540: center position binding member 610: round steel pipe (Example 4)

620: transverse support 630: longitudinal support

710: sheath tube 720: tension member (Example 5)

810: transverse through member (Example 6) 820: arch type reinforcing member (Example 6)

830: connecting support member

The present invention relates to a temporary system using a circular steel pipe. More specifically, the present invention relates to a temporary construction system that is to be dismantled after installing temporary structures such as temporary bridges and temporary bridges using I-beams and installing the present structures including bridges.

An example of using a conventional round steel pipe in a temporary system is shown in FIG. 1. That is, in order to construct a building, a temporary member including a stripe (Wale, 10) and a brace (Strut, stud, 20) is installed on the inner wall of the trench so that the inner side wall does not collapse after breaking the ground. The strip is installed horizontally or vertically along the inner wall surface, and the brace is installed to cross the inner space of the strip girder so as to support the earth pressure transmitted from the inner wall surface. At this time, the general strip and the brace is to use the I, H-beam beam, but the ready-made product (roll beam) is used as it is.

At this time, the H-beams have their own advantages by purchasing ready-made products with excellent quality control as they are, but there is a possibility of lateral buckling based on the weak axis (usually the Z axis). Without distinction, an example using a circular steel pipe which can omit intermediate vertical struts and bracing to improve workability and economy is shown in FIG. 1.

However, the example using the conventional circular steel pipe is used for the shaft member which is transmitted from both ends of the circular steel pipe, and in the case of using it for the bending member in the temporary system, there is no example of using the circular steel pipe member, so there is no technical development for this. The need has arisen.

Accordingly, the present invention provides a transverse restraining means of the circular steel pipe in order to apply the circular steel pipe as a bending member to the temporary system, to compensate for the bending stiffness generated in the point portion, the central portion, and to support and connect the upper and lower structures A new hypothesis system was developed that included means and new means for the distribution of loads.

As a result, the present invention provides a flexural stiffness at the point and the center of the circular steel pipe and its installation property, and can be efficiently and economically installed in the load distribution so that the circular steel pipe can be used as a bending member in a temporary system more efficiently. The purpose is to provide a temporary system using steel pipes.

In order to achieve the above technical problem, the present invention

First, a circular steel pipe 320 was used as a bending member as a temporary system. That is, since the circular steel pipe is a circular section, the resistance to bending against weak axes and steel shafts is not only very large, but also has an advantage of being structurally safe due to its small influence on torsion.

Second, since the maximum bending parent moment and the maximum bending constant moment are generated at the point and the center of the circular steel pipe for the bending member, the efficient bending rigidity is very important in the temporary system for the bending member.

In the present invention, in order to secure the bending rigidity in the point and the center portion, the present invention includes a steel pipe core located inside the circular steel pipe inside the steel pipe and a wing plate protruding along the outer circumferential surface of the steel pipe core to be in contact with the inner surface of the circular steel pipe. The rib 360 or the concrete 370 can be filled to compensate for the bending rigidity of the round steel pipe.

Third, in the installation of the circular steel pipe, the lower structure and the circular steel pipe 320 corresponding to the inner and outer lower surfaces of the circular steel pipe in the temporary structure, so that the disassembly as easy to dismantle as a temporary facility on the temporary construction pipe is a lower structure corresponding to each It was formed as a bent plate formed in a shape to be fastened to each other by a bolt and a nut using a bottom bonded plate formed with a bolt hole.

Fourth, the circular steel pipe is to be installed in parallel with each other in the longitudinal direction, so that the transverse connection member 340 including the steel rod between the circular steel pipe for the transverse restraint accordingly.

Fifth, the perforated plate and the upper plate structure 200 is easily installed in the circular steel pipe 320, and the horizontal steel pipe including a steel plate to efficiently transfer external loads such as self-load and traffic load of the upper plate structure to the circular steel pipe Directional ribs 350 are installed between the circular steel pipes, and upper plate supporting members such as L-shaped steel are installed thereon so that the upper plate structures can be more efficiently supported and installed.

Sixth, while being able to effectively resist the external load transmitted from the upper plate structure 200, such as the perforated plate, in consideration of the construction properties in particular protrudes to the side of the outer circular steel pipe and transversely installed through the inner circular steel pipe in the transverse direction Directional through member is installed, and is connected to the end of the transverse through member is installed on the outer side of the outer circular steel pipe so that the external load can be transferred, the arch-shaped arch-shaped reinforcing members (520, 820) installed in the longitudinal direction up Or installed soaring down, these arch-shaped reinforcing members were to be connected to each other by a vertical load transfer member or a connecting support member 830 in the circular steel pipe.

Seventh, in order to introduce the prestress in the longitudinal direction using the tension member 430 as a role of the arcuate reinforcing member, the tension reset box 420 is installed on the outer side of the outer circular steel pipe, the tension member 430 is While not located in the lower side of the outer side of the circular steel pipe is arranged in the longitudinal direction to be settled after the tension, or after the tension material is installed inside the round steel pipe to be settled after tension.

Eighth, an arch-shaped transverse support 620 in which both ends are fixed to the support installed in the inner lower portion of the outer circular steel pipe and a longitudinal support 621 for supporting the transverse support may be installed. Together with the steel pipes, it is possible to effectively support the external loads transmitted from the top structure.

BRIEF DESCRIPTION OF DRAWINGS To describe the present invention more clearly and easily, the following describes the best embodiments of the present invention in detail with reference to the accompanying drawings, and embodiments according to the present invention may be modified in various other forms, and thus the scope of the present invention. Is not limited to the embodiment described below.

Example 1

The hypothesis system of Example 1

In the hypothesis system is provided with a lower structure 100 including a temporary vent installed longitudinally spaced on the ground and the upper structure 200 including a perforated plate on top of the lower structure, the lower structure 100 and the upper structure ( Between 200)

It is installed by a fastener 310 including bolts and nuts on the upper surface of the lower structure, at least one or more in parallel in the transverse direction and is installed in the longitudinal direction extending the longitudinal steel pipe 320 and the circular steel pipe in the transverse direction Between the inner side of the circular steel pipe in order to constrained by the cross-section connecting member 340 including a steel rod that is fastened in the circular steel pipe both ends thereof through the circular steel pipe side surface by a connector 330 including a nut The upper structure 300 is configured to be further installed, it will be described with reference to Figures 2a and 2b is a cross-sectional view and perspective view of the upper structure of the first embodiment is installed on the lower structure.

The lower structure 100 is installed vertical beam 110 on the ground using the c-beam, fastening the horizontal beam 120 bolts and nuts using the c-beam in multiple stages on top of the vertical beam (110). After the installation, the fabricated and installed by reinforcing the vertical beam 110 and the horizontal beam 120 in a diagonal shape by using the inclined beam 130, the L-shaped steel 130, and the temporary structure is installed spaced apart in the longitudinal direction So that many can be installed.

The lower structure 100 can be later dismantled, and serves to transfer the load transmitted from the upper structure 300 to be described later to the ground, also manufactured in the form of a vertical beam, a horizontal beam and a sloped beam, Can be installed.

When two such substructures 100 are installed, and the upper structure 300 is installed therebetween, a short span hypothesis system and a case where two or more are installed are referred to as a multi span hypothesis system. Accordingly, the present invention can be manufactured and installed in a short span and multi span temporary system according to the number of installation of the substructure.

The circular steel pipe 320 is installed to extend in the longitudinal direction on the upper surface between the lower structure 100, as shown in Figure 2a and 2b, a plurality in parallel in the transverse direction (five in Figure 2a, Figure 2b) is installed. . The circular steel pipe 320 is installed using a steel pipe of a circular cross section having a predetermined diameter.

At this time, according to the spaced distance of the lower structure 100, it is possible to extend and install the circular steel pipes having various lengths to each other in the longitudinal direction, and can be connected to each other by a welding method, but such a method of welding It is shown in the body diagram of 2a.

That is, in the ends (connections) of the circular steel pipe 320 to be connected to each other, the double joint pipe 321 is installed by welding with the circular steel pipe 320, the longitudinal direction is installed so as to surround the inner and outer surfaces of the end, the longitudinal direction It is possible to extend the circular steel pipe.

The circular steel pipe 320 is to be dismantled after fixing the circular steel pipe on the upper surface of the lower structure by using a fastener 310 including a bolt and a nut for connection with the lower structure (100).

Excerpt of Figure 2b shows a connection between the circular steel pipe 320 and the substructure 100.

That is, the lower surface bonded plate 311, which is a curved plate formed in a shape corresponding to each of the inner and outer lower surfaces of the circular steel pipe, is installed on the inner and outer lower surfaces of the circular steel pipe, and the lower surface of the bolt hole formed on the lower bonded plate 311 After installing the bolt 312 to penetrate the upper surface of the lower structure 100 in contact with the bonding plate, and then tightened with a nut, the circular steel tube 320 can be installed to be detachable to the upper surface of the lower structure 100. Make sure

The circular steel pipe 320 is installed in a plurality in parallel in the horizontal direction as shown in Figure 2b, the horizontal connection member 340 is further installed for restraining the position in the horizontal direction.

The lateral connecting member 340 is to be installed between the inner circular steel pipe 320 side, it can use a steel bar 341.

That is, after forming the outer circumferential surfaces of both ends of the steel bar (341) with a screw thread, the two ends are installed so as to pass through each side of the circular steel pipe, and both ends of the steel bar on the inner surface of the circular steel pipe including a nut (331) The lateral connecting member 340 is installed in such a manner as to be fastened to 330.

At this time, when using the side joint plate 342, which is a curved plate formed in a shape (semi-circular) corresponding to the inner circumferential surface of the circular steel pipe, both ends of the steel bar (341) by the nut 331 to the inner surface of the circular steel pipe 320 It can be fastened more efficiently.

The lateral connecting member 340 may be installed a plurality of spaced apart between the circular steel pipe 320, as shown in Figure 2a and 2b, this may be determined in consideration of the longitudinal length, diameter and the like of the circular steel pipe.

When the circular steel pipe 320 is installed as above, the upper plate structure 200 is installed on the circular steel pipe 320.

In the case of a bridge system for the temporary bridge, the top plate structure 200 may be a double-hole plate 210, and in the case of the temporary system for the top plate of the bridge, the top plate structure 200 may support the formwork of the top plate. It can be installed in various forms such as a support, in the case of the present invention will be described on the basis of the case of a perforated plate.

In the case of the perforated plate 210 is manufactured in the form of a rectangular box is installed on the upper surface of the circular steel pipe 320, the upper surface of the circular steel pipe 320 is to support the transverse plate 210, the transverse ribs 350 Install as shown in FIG.

The lateral ribs 350 are eventually installed for the inconvenience of installing the perforated plate because the upper surface of the circular steel pipe is bent, but by extending the portion in contact with the perforated plate to more effectively transfer the load transmitted from the perforated plate It also needs to be able to have a distributed role.

Accordingly, in the present invention, in the case of the transverse rib 350, the steel sheet is formed in the transverse direction between the side surfaces of the circular steel pipe 320 as illustrated in FIG. 3, and has a side portion that is cut in a shape corresponding to the side shape of the circular steel pipe. It was to be installed as the phosphorus transverse support member 351.

Since the transverse support member 351 is installed between the side of the circular steel pipe 320 vertically, the steel plate, it is installed between the upper portion of the transverse support member in the planar state to support the perforated plate 210, the upper plate structure in the longitudinal direction An upper plate supporting member 352 including an L-shaped steel is installed.

At this time, the L-shaped steel is to be installed so that the lower surface is located in the circular steel pipe 320, the upper surface is preferably such that a flat surface is positioned to support the perforated plate.

As a result, the perforated plate 210 can be supported by a plurality of L-shaped steel installed in the longitudinal direction, while the perforated plate is effectively supported by the L-shaped steel horizontally, the external load including its own weight can be effectively distributed and transmitted to the circular steel pipe. It becomes possible.

As a result, the circular steel pipe 320 is installed to support the upper plate structure 200. Since the circular steel pipe 320 is used for the bending member, the portion in contact with the lower structure 100 is caused to have a bending parent moment. In order to effectively resist, in the present invention, the inner rib including a wing plate 362 installed in the point portion, the steel pipe core 361 located inside the circular steel pipe protrudes along the outer circumferential surface of the steel pipe core to contact the inner surface of the circular steel pipe ( 360) to be installed.

That is, the steel pipe core (361) uses a steel pipe of a smaller size than the diameter of the circular steel pipe 320, and protrudes radially from the outer circumferential surface of the steel pipe core (361) for its position restraint and point reinforcement, the end of the circular steel pipe A wing plate 362 formed to be in contact with the inner side is further formed.

As a result, the point portion of the hollow circular steel pipe may be effectively resisted by the bending ribs by the inner rib 360.

The inner rib 360 may be installed at the center portion in addition to the point portion of the circular steel pipe. The inner ribs of the center portion are for resisting the bending static moment, unlike the point portion.

The inner ribs 360 may be provided, but the inner spaces of the circular steel pipes of the respective branch portions and the central portion may be spaced apart from each other, and the rigidity of each of the branch portions and the central portion may be filled by filling the concrete 370 therein. Can be reinforced.

Example 2

The hypothesis system of Example 2 is

In the state in which the upper structure 300 including the circular steel pipe 320 and the transverse connecting member 340 is installed between the lower structure 100 and the upper plate structure 200 described in Example 1,

Circular transverse member 410, including a steel bar installed to protrude to the outer side of the outer both circular steel pipe while integrally penetrating the circular steel pipe in the transverse direction at a portion corresponding to the central portion and the branch portion;

The box body is installed on both outer side of the outer circular steel pipe, the end of the transverse through member is penetrated in the transverse direction and fastened to the box body, the tension reset box 420 is filled with a filler containing mortar therein ; And

Tension member 430 including a PC steel wire which is installed at both ends after being tensioned in a fixing device installed in the tension reset box, and is installed in the longitudinal direction as a whole as a parabola, and is not located below the lower surface of both outer circular steel pipes. If the tension means made of 400 is further installed.

Example 2 has a tension member 430 including the PC steel wire settled after tension in the outer circular steel pipe as compared to Example 1, as shown in Figure 4a, 4b and 4c, the perspective view, the point cross section and the center cross-sectional view thereof, It is a primary technical feature to reinforce the bending resistance of the circular steel pipe for bending members by introducing a kind of compression prestress to the circular steel pipe.

At this time, in the present invention, when the tension member 430 is installed for each of the circular steel pipes, the tension member is installed in the outermost circular steel pipe because of its workability and economic feasibility, and the lower structure when the tension member is installed to be stretched further downward than the circular steel pipe. The second technical feature is that the installation position of the tension member is located on the side of the outer circular steel pipe in consideration of the fact that its installation and work are not easy due to interference with the light.

The transverse transmissive member 410 is different from the transverse connecting member 340 for restraining the transverse position of the circular steel tube in that it is integrally installed through the point portion and / or the central portion of the circular steel tube 320. There is.

Steel rods may be used as the transverse through-member 410, and both ends of the circular steel pipes may protrude toward the side of the outer circular steel pipe. At this time, the steel bar is to be able to use the rigidity of the steel bar itself by using the one made integrally.

At this time, both ends of the transverse through-member 410 protruding from the point portion is provided with a tension reset box 420, the tension member 430 is fixed after the tension.

Since the tension reset box 420 is installed to be attached to the outer side of the circular steel pipe, the transverse through member 410 penetrates therein so that the tension reset box 420 may be fastened by a nut at the outer side of the tension reset box.

As a result, the tension reset box 420 is fixed to the outer circular steel pipe by the transverse through member 410, and the fixing device 430 is fixed to the top of the tension reset box 420 located at the point. 421 may be located.

At this time, the tension reset box 420 has a height which protrudes upward more than the installation height of the circular steel pipe, so that even if the deflection (segment) of the tension material is considered, the tension member is not located below the side of the circular steel pipe. This is because when the tension material is located under the circular steel pipe, the tension material and the fixing work are performed in the lower space of the circular steel pipe.

Furthermore, since the tension reset box 420 is an empty box body, the filler 422 including concrete may be filled to serve as a fixing support when the tension member 430 is fixed after tension.

As a result, the tension reset box 420 is fixed to the side of the outer circular steel pipe by the transverse through member 410, and also serves to support the tension member 430 when the compression prestress is introduced by the tension member.

The tension member 430 is settled after tension between the fixing device 421 of the tension reset box 420 installed at both ends belonging to the branch portion of the circular steel pipe, is installed in a parabolic form in the longitudinal direction as a whole, as shown in Figure 2a An end extending toward the tension reset box 420 may be fixed to both ends of the transverse through member installed to penetrate the circular steel pipe 320 again. In this case, the tension member 430 is installed to pass through the tension reset box 420 supported by the additional transverse through member 410 installed to penetrate the central portion of the circular steel tube in the transverse direction, so that the tension member 430 stretches in the longitudinal direction. Even if installed, it should not be drooped under the round steel pipe.

In addition, the transverse rib 350, the inner rib 360 and the concrete 370 described in the first embodiment may be installed in the same, the circular steel pipe 320.

Example 3

The hypothesis system of Example 3

The perspective view of the third embodiment in a state in which the upper structure 300 including the circular steel pipe 320 and the transverse connecting member 340 is installed between the lower structure 100 and the upper plate structure 200 described in the first embodiment And as shown in FIGS. 5A and 5B, which are front views.

The transverse through-member 510 and the branch portion which include steel bars which protrude to the outer side surfaces of both outer circular steel pipes while integrally penetrating the circular steel pipes in the transverse direction and corresponding to the circular steel pipe center and the branch portion. When the both ends are connected to the end of the protruding transverse through member is further provided with an arcuate reinforcing means 500 including an arcuate reinforcing member 520 including a circular steel pipe installed in the longitudinal direction with the center portion raised upwards. to be.

Embodiment 3 is characterized in that the arch-shaped reinforcing member 520 is installed in place of the tension reset box 420, the tension member 430 is installed compared to the second embodiment.

As described in Example 2, the transverse through-member 510 may be installed at both the point and the center portion of both ends of the circular steel pipe,

The arcuate reinforcement member 520 is the center portion is raised upwards, so that the maximum upper surface portion is positioned higher than the height of the circular steel pipe 320 is installed to contact the upper plate structure 200 which is a perforated plate from the upper plate structure 200 The external load being transmitted is directly transmitted to the arcuate reinforcement member 520, and the external load is distributed by the arching effect of the arcuate reinforcement member 520, and finally is transmitted to the transverse through member and the circular steel pipe.

At this time, the arcuate reinforcement member 520 is installed so that both ends thereof are supported by the transverse through member 510, for example, the hinge of the arch reinforcement member to be connected to the transverse through member and the corners of the corners to rotate the corner You can do it.

Furthermore, in order to enhance the dispersion effect of the external load, in the present invention, the vertical load transfer member 530 is spaced apart a plurality of steel rods at predetermined intervals between the arcuate reinforcement member 520 and the outer circular steel pipe 320 Can be installed more,

At this time, in order to constrain the position of the arcuate reinforcement member 520, the both ends together with the vertical load transfer member 530, both ends of the arcuate reinforcement member and the outer side of the central portion of the outer circular steel pipe using a bolt or the like The center portion restraint member 540 including the steel rods installed up and down may be further installed.

The arcuate reinforcement member 520 is easier to install than the tension member 430 according to the second embodiment, there is an advantage that does not have to use expensive PC steel wire.

In the case of the vertical load transfer member 530, it may be installed by welding, in the case of the central position restraint member 540 may be installed in a hinge form.

In addition, the horizontal ribs 350, the inner ribs 360, and the concrete 370 described in Embodiments 1 and 2 may be installed in the same way as the circular steel pipe 320.

Example 4

The hypothesis system of Example 4

6A and 6B as a perspective view and a longitudinal sectional view between the lower structure 100 and the upper plate structure 200 described in the first embodiment

Circular steel pipe 610 is installed by a fixture including a bolt and nut on the upper surface of the lower structure, at least one or more in parallel in the transverse direction and installed in the longitudinal direction;

A transverse support 620 including a circular steel pipe having both ends supported by a support 621 installed on an inner lower surface of the outer circular steel pipe 610 and arched in a transverse direction;

It was to include a longitudinal support 630 including a circular steel tube installed in the longitudinal direction to support the transverse support from the bottom in contact with the lower surface of the central portion and the lower structure of the transverse support.

The hypothesis system according to the fourth embodiment does not have a transverse connecting member 340 between the inner circular steel pipes for restraining the circular steel pipes installed in parallel in comparison with the first, second and third embodiments, instead of the arch shape. There is a technical feature of installing the horizontal support 620 of the circular steel pipe.

The transverse support 620 is an arch provided so that both ends thereof are supported by a support 621 formed by bending a steel plate on the inner lower surface of a circular steel pipe so that its center portion is raised upward to contact the lower surface of the upper plate structure 200. Use a form of tube.

As a result, the transverse support 620 serves to directly support the upper plate structure 200 in addition to merely restraining the circular steel pipe in the transverse direction.

At this time, since the lower space of the central portion of the transverse support is formed as spaced spaces spaced apart, the longitudinal support 621 including a circular steel tube to contact the lower structure 100 in the lower portion in order to support the transverse support 620 at the bottom thereof. Install).

Since the upper surface of the lateral support 620 is bent, there may be a problem in that a portion of the upper surface structure 200 is in contact with the lower surface, so that the upper surface of the lateral support 620 is lower between the upper surface of the upper structure. By installing the upper plate support member 630 including the steel pipe in contact with the top plate structure 200 to be more stably supported on the transverse support 620.

The upper plate support is preferably such that the lower surface is formed in a form corresponding to the upper surface of the transverse support.

In addition, the inner rib 360 and the concrete 370 described in the above embodiments may be installed in the same, the circular steel pipe 610.

Example 5

The hypothesis system of the fifth embodiment can be regarded as a modification of the second embodiment.

That is, the tension member 430 is used as in the second embodiment, but the tension member is not installed in the longitudinal direction on the outer side of the outer circular steel tube 320, but disposed to penetrate the inner side of each circular steel tube 320 in the longitudinal direction. There is a technical characteristic to it.

Embodiment 5 is a state in which the upper structure 300 including a circular steel pipe 320 and the transverse connecting member 340 is installed between the lower structure 100 and the upper plate structure 200,

Sheath pipe 710 installed in the longitudinal direction inside the circular steel pipe;

The tension member 720 including a PC steel wire disposed inside the sheath tube 710; is further installed.

In the second embodiment, as shown in Figs. 7A and 7B, which are the pointed cross section and the center cross section, the tension member 720 including the PC steel wire is installed inside the circular steel pipe and settled after tension as compared with the second embodiment, so that each circular steel pipe is fixed to each other. Compression prestress is introduced.

The sheath pipe 710 may be a steel pipe or the like as a tube for receiving the tension material. The sheath tube is installed in a parabolic form in the longitudinal direction, in the case of the point portions of both ends of the circular steel pipe to be installed on the upper side of the circular steel pipe, in the case of the central portion to be installed below the circular steel pipe.

The tension member 430 is inserted through the sheath tube so that both ends of the fixing apparatus installed at both end faces of the sheath tube 710 (for example, a circular cap-type closing cap installed at the end of the circular steel tube is provided with a conventional fixing apparatus) Can be installed.)

Furthermore, a filler such as mortar may be filled (grouting) in the sheath tube 710.

In addition, the transverse rib 350, the inner rib 360 and the concrete 370 described in the first embodiment may be installed in the same, the circular steel pipe 320.

Example 6

The hypothesis system of the sixth embodiment can be regarded as a modification of the third embodiment.

That is, the arched reinforcing member is used as in the third embodiment, but the arched reinforcing member is not installed to rise above the circular steel pipe, but is installed to rise downward and the bottom surface of the circular steel pipe 320 and the arched reinforcement. The technical features of the connection member 830 between the upper surface of the member 820 is provided.

Front view of the third embodiment in a state in which the upper structure 300 including the circular steel pipe 320 and the transverse connecting member 340 is installed between the lower structure 100 and the upper plate structure 200 described in Example 1 As shown in Figure 8

On the portion corresponding to the circular steel pipe point portion, the transverse through-member 810 including a steel bar installed to protrude to the outer side of both outer circular steel pipe while integrally penetrating the circular steel pipe in the transverse direction and protruded from the point portion An arch-shaped reinforcing member 820 including a circular steel pipe installed in a longitudinal direction by connecting both ends thereof to the ends of the transverse through-members so that the center portion thereof rises downward;

The arcuate reinforcement means 800 is further installed between the lower surface of the circular steel pipe including the central portion and the upper surface of the arcuate reinforcement member 820 comprising a connection support member 830. .

As described in Example 3, the transverse through-member 810 may be installed at the point portions of both ends of the circular steel pipe,

The arcuate reinforcing member 820 is the center portion is raised to the bottom, the maximum lower surface portion is installed so as to be located at a lower level than the lower portion of the circular steel pipe (320).

The external load transmitted from the upper plate structure 200 is installed to the member of the circular steel pipe 320 and the arcuate reinforcing member 820 to transfer the load so as to be transmitted to the arch-shaped reinforcing member located below the circular steel pipe, such a The member is the connection supporting member 830.

As the connection support member 830, but using the H-shaped steel installed in the transverse direction, it can be installed in contact with the up and down, may be installed in a plurality of parts.

That is, the external load acting is distributed by the arching effect of the arcuate reinforcing member 820 via the connecting support member 830 from the upper plate structure 200, and finally to be transmitted to the transverse through member and the circular steel pipe. .

At this time, the arcuate reinforcement member 820 is installed so that both ends thereof are supported by the transverse through member 810, for example, the hinge of the arch reinforcement member is connected to the transverse through member and the corners of the corners to rotate the corner Not to be the same as in Example 3.

In Example 6, the same load and load transfer member or center position restraint member as in Example 3 may be provided, but not shown in FIGS. 8A and 8B.

In addition, the transverse rib 350, the inner rib 360 and the concrete 370 described in the third embodiment may be installed in the same, the circular steel pipe 320.

Such an arcuate reinforcement member 820 may be installed one by one on both outer surfaces of the circular steel pipe in Figure 8, may be installed in a transverse direction along the transverse through member 810, which is a circular steel pipe and a circular steel pipe It may be installed at the exposed part of the transverse through-member located between the.

As a modification of the sixth embodiment, the installation of the transverse through member 810 and the connecting support member 830 in the same state, the arc-shaped reinforcing member 820 is not shown, but as shown in the fifth embodiment It can be replaced by a sheath tube with a tension member.

The hypothesis system using the circular steel pipe

Although it can be used in the form of bridges for temporary bridges, it can be sufficiently used as a copper bar system for installing various types of bridge decks.

In addition, since the circular steel pipe is used, it is possible to overcome the limitation of the application of the conventional straight-type temporary system in the case of the curved type temporary facility system. Can be made.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

Claims (15)

In the hypothesis system is provided with a lower structure including a temporary vent installed longitudinally spaced on the ground and the upper structure including a perforated plate on top of the lower structure, between the lower structure and the upper structure, It is installed by a fixture including a bolt and a nut on the upper surface of the lower structure, at least one or more are installed in parallel in the transverse direction and installed in the longitudinal direction to restrain the circular steel pipe and the circular steel pipe in the transverse direction Between the side of the circular steel pipe, the upper structure comprising a transverse connecting member including a steel rod that is fastened inside the circular steel pipe, both ends thereof through the circular steel pipe side by a connector including a nut is further installed. Temporary system using round steel pipe. According to claim 1, Transverse through-member comprising a steel bar protruding to the outer side surface of both the outer circular steel pipe while integrally penetrating the circular steel pipe in the transverse direction at the portion corresponding to the central portion and the circular steel pipe; A box body provided on both outer side outer circular steel pipes, wherein an end portion of the lateral through member penetrates in a horizontal direction and is fastened to the box body, and a tension resealing box filled with a filler including mortar therein; And a tension member including a PC steel wire both ends of which are fixed after being fixed to a fixing device installed in the tension reset box, and which are installed in a longitudinal direction as a whole as a parabola, and are not positioned below the lower surface of both outer circular steel pipes. Tension means; Temporary system using a circular steel pipe, characterized in that further installed. According to claim 1, Sheath pipe installed in the longitudinal direction inside the circular steel pipe; And a tension member including a PC steel wire disposed inside the sheath pipe. According to claim 1, Transverse through-member comprising a steel bar protruding to the outer side surface of both the outer circular steel pipe while integrally penetrating the circular steel pipe in the transverse direction at the portion corresponding to the central portion and the circular steel pipe; And an arcuate reinforcement member including an arcuate reinforcement member including a circular steel tube installed at both ends of the transverse through member protruding from the point portion and having a central portion so as to rise upward. Temporary system using a circular steel pipe, characterized in that. According to claim 4, Between the arcuate reinforcing member and the outer circular steel pipe is installed between the upper and lower load transfer member including a steel rod, or both ends together with the vertical load transfer member in the center and the outer portion of the arcuate reinforcement member Temporary system using a circular steel pipe, characterized in that the central portion of the circular steel pipe is connected to the central portion of the circular steel pipe is installed further comprising a central position restraining member. According to claim 1, Transverse through-member comprising a steel bar protruding to the outer side of the outer both circular steel pipe while integrally penetrating the circular steel pipe in the transverse direction at a portion corresponding to the circular steel pipe point; And an arch-shaped reinforcing member including a sheath pipe in which both ends are connected to an end portion of the transverse through member projecting from the point portion, and a central steel is raised downward and a longitudinally installed circular steel pipe or tension member is disposed therein. And an arch-shaped reinforcing means further comprising a connection supporting member including an H-shaped steel between the lower surface of the circular steel pipe including the central portion and the upper surface of the arch-shaped reinforcing member. system. In the hypothesis system is provided with a lower structure including a temporary vent installed longitudinally spaced on the ground and the upper structure including a perforated plate on top of the lower structure, between the lower structure and the upper structure, It is installed by a fixture including a bolt and a nut on the upper surface of the lower structure, at least one or more in parallel in the transverse direction is installed in both sides of the circular steel pipe outside the circular steel pipe extending in the longitudinal direction both ends are supported A transverse support including a circular steel pipe supported and installed in a transverse arch shape; And a longitudinal support including a circular steel pipe installed in a longitudinal direction to support the transverse support from the bottom in contact with the lower surface of the central portion of the transverse support and the upper surface of the lower structure. According to claim 7, To support and secure the upper plate structure on the upper surface of the circular steel pipe, A top plate support comprising a steel pipe on which a bottom surface is formed in a shape corresponding to the top surface of the transverse support, the top structure being supported on the upper surface; a circular steel pipe further installed between the transverse support and the top structure Hypothesis system. The method according to any one of claims 1 to 6, in order to support and fix the upper plate structure on the upper surface of the circular steel pipe, It is installed in the transverse direction between the side of the circular steel pipe, the upper plate in the longitudinal direction between the transverse support member and the transverse support member including a steel plate formed to have a side portion cut in a shape corresponding to the side shape of the circular steel pipe Temporary system using a circular steel pipe, characterized in that the transverse ribs further comprising a top plate support member including an L-shaped steel installed to support the structure in a planar state. The method according to any one of claims 1 to 8, wherein the upper portion of the lower structure and the central portion of the circular steel pipe and the point of contact with the steel pipe core located inside the circular steel pipe and protrudes along the outer circumferential surface of the steel pipe core Temporary system using a circular steel pipe, characterized in that the inner rib further comprises a wing plate installed to contact the inner surface of the circular steel pipe. The method according to any one of claims 1 to 8, wherein the upper part of the lower structure and the point portion where the circular steel pipe is in contact with each other, the interior of the circular steel pipe is blocked with a filling plate to further fill the concrete therein. Temporary system using round steel pipe. According to any one of claims 1 to 8, wherein the extension installation of the round steel pipe Temporary system using a circular steel pipe, characterized in that the double-junction pipe is installed to surround the inner and outer surfaces of the connection portion of the circular steel pipe by welding with the circular steel pipe. The method of any one of claims 1 to 6, wherein the installation of the lateral connecting member After inserting the both ends of the steel rod formed on the outer peripheral surface of both ends into the through hole formed on the side of the circular steel pipe, the insertion hole corresponding to the through hole is formed inside the circular steel pipe and has a shape corresponding to the inner circumferential surface of the circular steel pipe. Temporary system using a circular steel pipe, characterized in that the side joint plate formed by the formed bending plate is fastened using a nut. According to any one of claims 1 to 8, wherein the upper structure of the lower structure of the circular steel pipe It is formed by a bent plate formed in a shape corresponding to each of the inner and outer lower surface of the circular steel pipe, and is made by fastening with a nut after installing the bolt so as to pass through the upper surface of the lower structure and the lower structure in contact with the lower surface bonded plate Temporary system using circular steel pipe. The method according to any one of claims 1 to 8, The upper structure is a hypothetical system using a circular steel pipe, characterized in that installed in the short or multi-span between the upper surface of the two lower structure is installed on the ground or between the upper surface of the lower structure is installed at least three.

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