KR200189326Y1 - Incremental launching method type pc box girder bridge making mold system - Google Patents

Abstract

The present invention particularly relates to a PC box girder bridge fabrication formwork for an incremental launching method (ILM) in bridge construction. The present invention is to simultaneously support the lower formwork unit for forming the bottom slab of the structure, the outer formwork unit for forming the outside of the left and right wall of the structure, and the lower formwork unit and the outer formwork unit at the bottom thereof An inner formwork unit for forming a wall of the structure by a horizontal support and a jack, a tie bolt fixed from the outer formwork unit, an inner upper formwork unit forming an upper slab, and an inner upper formwork unit It is composed of a support to support the. Therefore, it is possible to manufacture the wall of the floor slab integrally when manufacturing the segment, and to easily operate by the up / down method during installation and demolding work, thereby reducing labor costs and time, and the wall of the floor slab manufacturing integrally. It is possible to manufacture a PC box girder bridge with a smooth appearance.

Description

PC Box Girder Bridge Forming System for ILM {INCREMENTAL LAUNCHING METHOD TYPE PC BOX GIRDER BRIDGE MAKING MOLD SYSTEM}

The present invention relates to a PC box girder bridge formwork system for ILM, and in particular, it is possible to manufacture the wall of the floor slab integrally when manufacturing the segment, and to easily operate the up and down method during installation and demolding work. The present invention relates to a formwork system that can reduce the time and time, and can manufacture the wall of the floor slab as an integrated body to produce a smooth PC box girder bridge.

1 is a view showing an example of a conventional ILM PC box girder bridge manufacturing formwork system, as shown, the lower formwork unit 20 for supporting the bottom slab 11 of the structure 10, and the lower formwork A jack 21 supporting the unit 20, an external formwork unit 30 for supporting the outside of the left and right walls 12 of the structure 10, and the external formwork unit 30 are supported via a supporter. Jack 31, an inner formwork unit 40 for supporting the inner wall of the structure 10 and the bottom of the upper slab 13, and a support 41 for supporting the inner formwork unit 40, respectively. Consists of.

2 to 9 are diagrams showing a method of manufacturing a segment using the conventional box-forming formwork for the ILM PC box girder bridge.

In detail, first, the inclined supporter 31 ′ and the jack 31 are supported to support the external formwork unit 30 and the supporter 21 ′ and the jack 21 to form the outer wall 12. The lower formwork unit 20 is installed to form the floor slab 11 (FIG. 2); Reinforcing the reinforcing bar on the wall 12 and the bottom slab 11 and assembling the sheath pipe (FIG. 3); Placing concrete on the lower formwork unit 20 to form the floor slab 11 (FIG. 4); An internal formwork unit 40 installation step (FIG. 5) supported by the supporter 41 and the jack 41 'to form the wall 12 and the upper slab 13; Assembling the reinforcing bars and the sheath pipe to the upper slab 13 (FIG. 6); Placing concrete to form a wall 12 and an upper slab 13 (FIG. 7); Demolding the formwork units 20 and 30 of the wall 12 and the bottom slab 11 in succession in three steps from the formwork (Fig. 8); Reassembling the formwork to produce the segment (Fig. 9).

10 is a front view of the structure completed by the prior art as described above, the bottom slab 11, the left and right walls 12 and the upper slab 13 is formed as shown, in the conventional casting process as described above The slab 11 of the structure 10 is formed during the primary pouring, and the wall 12 and the upper slab 13 are formed during the secondary pouring.

However, according to the prior art as described above, since the external wall formwork unit is installed in the inclined shape and demoulded, when installing in parallel side by side to install the production site is staggered occupy a lot of workshop space, and also concrete pouring floor Since the slab is poured first, and the wall and the upper slab are cast, there is a problem in that the outer wall is not formed smoothly so that the appearance of the PC box girder bridge is poor (see part A of FIG. 10).

In addition, since the external formwork unit and the floor slab must be separated and installed, the installation time is long, the operation is not easy, the weight is excessive, and the production site must be crossed, so that it is difficult to install the tower crane, etc. There is a problem that it is difficult to obtain a certain quality due to the construction dependent on manpower, the air is increased, and the construction cost increases.

In addition, in the conventional layout of the production site, when the construction of the up and down lines at the same time, the production site must be alternately arranged, thus increasing the construction cost due to the large production site and increasing the construction cost. In addition, since the formwork unit is divided into two external walls and one floor formwork unit, there is a problem that the construction of the foundation structure is complicated and not easy.

In addition, since the rail is welded and installed with reinforcing bars and anchors of the wall as shown in FIG. 11, there is a risk that the rail may move when concrete is placed, and thus it is difficult to accurately maintain the level of the rail surface.

The present invention has been made to solve the problems of the prior art as described above, its purpose is to facilitate the fabrication and demoulding of the structure by the up / down method, shorten the installation time, and reduce the weight of the formwork At the same time, it is to provide a PC box girder bridge fabrication formwork for ILM that reduces construction costs and simplifies work.

1 is a front view showing a conventional formwork and PC box girder bridge.

2 to 9 is a view showing a segment manufacturing method using a conventional formwork.

10 is a front view of a structure completed by the prior art.

Figure 11 is a front view showing a conventional shop rail.

Figure 12 is a front view showing the PC box girder bridge fabrication formwork for the ILM of the present invention.

13 to 20 is a view showing a segment manufacturing method using the formwork system of the present invention.

Figure 21 is a front view of the structure completed by the present invention.

Figure 22 is a front view showing a manufacturing site rail of the present invention.

<Explanation of symbols for main parts of the drawings>

100: structure 110: floor slab

120: wall 130: upper slab

200: lower formwork unit 300: external formwork unit

400: horizontal support 410: jack

500: internal formwork unit 600: internal upper formwork unit

610: rail

ILM PC box girder bridge fabrication form according to the present invention for achieving the above object, the lower formwork unit for forming the floor slab of the structure, and the external formwork unit for forming the outside of the left and right walls of the structure and A horizontal support and a jack for simultaneously supporting the lower formwork unit and the outer formwork unit at a lower portion thereof, and an inner formwork unit for forming a wall of the structure by tie bolts fixed from the outer formwork unit; And an inner upper formwork unit forming the upper slab, and a support for supporting the inner upper formwork unit.

The lower formwork unit and the external formwork unit are demolded in an up-down manner at the same time by using the jack under the horizontal support.

By placing concrete on the floor slab and the wall at the same time, the external wall shape can be maintained in a straight line.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the subject innovation will be described in detail.

12 is a front view showing a PC box girder bridge fabrication formwork system for the ILM of the present invention, the lower formwork unit 200 supporting the bottom slab 110 of the structure 100, and the structure of the structure 100 An external formwork unit 300 for supporting the outside of the left and right walls 120 is provided.

In addition, the lower formwork unit 200 and the external formwork unit 300 at the bottom of the horizontal support 400 and the support jack 410 to support simultaneously through the supporter 300 'and the external formwork unit 300 An internal formwork unit 500 is provided that supports the walls of the structure 100 by anchors fixed therefrom.

In addition, it is composed of an inner upper formwork unit 600 for supporting the bottom of the upper slab 130, and a support 610 for supporting the inner upper formwork unit 600.

Between the lower formwork unit 200, the left and right outer formwork unit 300 and the horizontal support member 400 is configured such that the horizontal support member 400 is simultaneously supported by the support means 400 '.

In addition, the bottom plate 700 mounted on the lower formwork unit 200 and the support means for supporting it is configured, the support means 1000 is a cement grouting layer 900 on the post 905 The bottom plate 902, the support means 903 are sequentially placed on it, and the plate 904 is installed on the top again.

13 to 20 show the steps of manufacturing the structure using the formwork, Figure 13 is to install the lower formwork unit 200 and the external formwork unit 300 on the horizontal support 400 and the support jack 410 In step 14, assembling reinforcing bars and sheath pipes to the wall 120 and the floor slab 110, and fixing the tie bolts from the external formwork unit 300 inside the wall 120, the internal formwork unit ( And FIG. 15 is a step of pouring concrete to form the wall 120 and the floor slab 110, and FIG. 16 is an inner top formwork for forming the upper slab 130. FIG. Unit 600 is a step of installing, Figure 17 is a step of assembling the reinforcing bar and the sheath pipe in the upper slab 130, Figure 18 shows the step of pouring concrete to form the upper slab (130).

In addition, Figure 19 shows a step of demolding the lower formwork unit 200 and the external formwork unit 300 at the same time by using the jack 410 of the lower side of the horizontal support 400, Figure 20 is completely demolded and re-made It is a figure which shows the formwork system of the state before entering.

Figure 21 is a front view of the PC box girder bridge completed by the present invention, as shown in the bottom slab 110 and the left and right walls 120 and the upper slab 130 is formed at the same time, in particular during the pouring process of the present invention The bottom slab 110 and the wall 120 are formed during the first pouring, and the upper slab 130 is formed during the second pouring.

Therefore, since the external formwork unit 300 and the lower formwork unit 200 can be installed and demoulded only by the vertical movement, they can be manufactured by installing the workshop in parallel, and the concrete pouring places the floor slab 110 and the wall 120. Since it is poured at the same time, the external wall shape can be kept smooth in a straight line, resulting in a beautiful appearance (see part B of FIG. 21).

In addition, since the concrete joint surface is formed between the inner wall 120 and the upper slab 130, the joint surface is not exposed to the outside, thereby improving appearance, and the external formwork unit 300 and the floor slab formwork unit 200 are integrally formed. It can be installed at the same time, so installation time is short and formwork weight can be reduced.

In addition, since the production site can be installed in parallel, the mechanized construction is possible due to the installation of the tower crane, and the construction cost can be reduced by improving the quality and shortening the air.

Figure 22 is a front view showing in detail the rail of the bottom surface of the ILM PC box girder bridge fabrication system of the present invention, the cement grouting layer 900 is formed on the support (1000) and the bottom plate 902, support means thereon 903 are put in order, and the plate 904 is provided in the upper part again. Here, the leveling bolt is inserted into the grouting layer 900 and the plate 902, which is used as a means for maintaining the level of the rail surface. In this way, the rail can be separated from the wall and the level can be adjusted using a leveling bolt, so that the level of the rail surface can be maintained accurately (± 1 mm).

As described above, according to the ILM PC box girder bridge manufacturing formwork and the structure according to the present invention, since the external formwork unit and the lower formwork unit can be installed and removed only by vertical movement, the production site is installed in parallel. Since the concrete pours the floor slab and the wall at the same time, the exterior wall shape can be kept smooth, and the aesthetic appearance is beautiful. In addition, the external formwork unit and the floor slab formwork unit can be installed at the same time so that the installation time can be shortened and the weight of the formwork can be shortened. Quality improvement and air It can reduce the construction cost, install the up and down line in parallel, reduce the size of the production site, reduce the construction cost by easy on-site work management, and manufacture the external wall of the formwork and the floor slab integrally. Therefore, the shape of the foundation structure is simple and easy to construct. In addition, since the rail can be separated from the wall and the level can be adjusted using a leveling bolt, there are a wide variety of effects such as keeping the level of the rail accurate.

Claims (3)

A lower formwork unit 200 for forming the bottom slab 110 of the structure 100; An external formwork unit 300 supported by the support means 300 'for forming the exterior of the left and right walls 120 of the structure 100; A horizontal support unit 400 which simultaneously supports the lower formwork unit 200 and the external formwork unit 300 at a lower portion thereof through an intermediate support means 400 '; An inner formwork unit 500 fixed by the outer formwork unit 300 and a connecting means 500 'to form a wall of the structure 100; An inner upper formwork unit 600 forming an upper slab 130; The support means 610 for supporting the inner upper formwork unit 600 and the bottom plate 700 mounted on the lower formwork unit 200 and the support means 1000 for supporting the ILM, characterized in that PC box girder bridge fabrication system. The method of claim 1, wherein the lower formwork unit 200 and the external formwork unit 300 are simultaneously up-down and demolded by using the jack 410 below the horizontal support 400. PC box girder bridge fabrication system for ILM. The cement grouting layer 900 is formed on the supporting means 1000, and the bottom plate 902 and the supporting means 903 are sequentially placed on the supporting means 1000, and the top is again placed on the top. PC box girder bridge manufacturing formwork system for ILM, characterized in that the plate 904 is configured to be installed.