KR101654742B1 - Movable scaffolding system mounted upper-structure of bridge and bridge construction method therewith - Google Patents

Abstract

The present invention relates to a bridge construction method using a movable formwork system installed to be supported on a bridge substructure for supporting a movable formwork system on an upper surface of a foundation of a bridge substructure such as a bridge, bridge, A movable formwork system including a movable bogie installed on a transverse beam, a longitudinally movable beam installed on an upper surface of the moving bogie, a hypothetical vent installed on an upper surface of the longitudinally movable beam, and a movable formwork, .

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bridge construction method using a movable formwork system installed to be supported on a bridge substructure,

The present invention relates to a bridge construction method using a movable formwork system adapted to be supported on a bridge substructure. More particularly, the present invention relates to a bridge construction method using a movable formwork system installed to be supported on a bridge substructure for supporting a movable formwork system on a top surface of a bridge substructure such as a pier or an alternate bridge.

1A is a construction sectional view of a conventional full staging method (F.S.M.) method.

Specifically, in the conventional F.S.M. method,

A step (s1) of providing an alternating and piercing angle (20) at each span and separately installing a base plate (30:31) supported by the pile between the span;

(40, 41, 42, 43) serving as a temporary support structure provided with a lifting support means (44) and a moving means (45) provided on a lower surface thereof, The moving means 2 (54) provided on the lower surface of the main girder (50), which is extruded to the upper surface of another temporary vent provided at the front pier while sliding the upper surface of the temporary vent in the longitudinal direction by means of the extrusion means (90) And two segmented steel beams 61 and 62 which are connected to each other by a pin 63 and which have a transverse beam 60 transversely crossing the main girder 50 In the installation of the temporary vent 40, the elevation support means 44 provided on the lower surface of the hypothetical vent is supported on the upper surface of the foundation plate so that the height of the elevation support means 44 is supported and fixed to the foundation plate 30 (S2);

A step (s3) of fabricating a bridge overhead structure B using a bridge 70 for a bridge over structure provided on the upper surface of the transverse beam 60;

The elevating support means 44 of the hypothetical vent 40 is lowered so that the moving means 1 45 is brought into contact with the base plate 30 The step (s4) of disengaging the pin to move each of the segmented transverse beams 60 in the lateral direction;

And a step (s5) of extruding and moving the main girder of the hypothetical vent and each segmented transverse beam 60 to the upper surface of the other hypothetical vent provided at the front bridge bridge by using the extrusion means 90 installed in the hypothetical vent ,

Thus, the bridge is completed by repeating the work for manufacturing the bridge superstructure (B) at each span.

Such conventional F.S.M. method is mainly used at a relatively low pier height (30M or less) in a terrain having excellent ground conditions.

Therefore, it is advantageous that the material necessary for construction can be easily secured, and the skilled artisan is abundant, so that it is easy to construct a curved bridge as a widely used method.

However, if the ground condition including the soft ground is inadequate, there is a problem that the additional construction cost must be applied for the ground treatment, and the installation and demolition must be repeated when the steel pillar is installed.

Therefore, when the ground condition including the soft ground is insufficient, the construction workability and economical efficiency of the bridge construction are inevitably reduced, and there is a problem that the bridge construction method using the F.S.M method is inevitably limited.

FIG. 1B shows a construction view and a cross-sectional view (a-a) of a Movable Scaffolding System (movable scaffolding system).

That is, in the MSS method, as shown in FIG. 1B, a main girder 11, an upper outer form 12, a cross beam 13, It can be seen that it includes a moving pier bracket (14), a moving and elevating unit (MOVING amp) and a lifting unit.

That is, in the construction of a bridge, the Movable Scaffolding System (MSS) is a mobile scaffolding system, which is a bridge between a bridge and a pier or a pier bridge. When a bridge overhead structure (B) The bridge structure is continuously installed by moving one span forward. The most important feature is that the movable scaffold system can be moved as it is without being supported on the ground.

Therefore, the mobile scaffold system of MSS method can move freely in each span by using mechanical device, and it is a mechanization system which is made considering the topographical condition and the bridge structure type, so it is advantageous for quality control and shortening of air, Or sea, but it is possible to work regardless of the ground condition. However,

Conventionally, the movable scaffold system is very expensive, so there is no economical efficiency in small and medium sized bridges.

Accordingly, the present invention has advantages of the FSM method (full staging method) and the MSS method (movable scaffolding system), but it is possible to construct the bridge superstructure more quickly and economically The present invention provides a bridge construction method using a movable formwork system installed to be supported on a bridge substructure.

According to an aspect of the present invention,

First, a movable formwork system is used to construct the bridge superstructure (girders and slabs), and the bridge superstructure is continuously installed while moving the movable formwork system in the longitudinal direction. Unlike the conventional movable form scaffolding system (MSS), the movable formwork system is installed not to be suspended at a pier or alternation, but to be supported directly on the upper surface of the foundation of the bridge underground structure .

Therefore, it is possible to move the movable scaffold system forward without being affected by the state of the ground around the bridge.

Second, the movable formwork system is installed over two spans so that the upper bridge structure including the upper slab is installed at the rear span, the bridge upper structure excluding the upper slab is installed at the front span, It is possible to construct the bridge superstructure quickly and continuously by integrating the bridge superstructure where the upper slab is not installed and the bridge superstructure where the upper slab is constructed while continuously moving the bridge superstructure in succession .

Since the movable formwork system installed to be supported by the bridge substructure according to the present invention uses a movable movable beam installed and moved so that the movable formwork system is supported on the foundation of the bridge substructure, the conventional movable formwork system (Movable Scaffolding System, It is possible to provide a movable formwork system installed to support a more rapid and economical bridge substructure by omitting the construction, installation and transfer of load supporting structures such as bridge brackets to move the movable scaffold system do.

In addition, the present invention is a method of integrating a bridge overhead structure for two spans without installing a foundation plate having a file for installing a temporary vent such as a full staging method (a full staging method) It is possible to provide a mobile formwork system installed to be supported on a bridge substructure capable of constructing a bridge overhead structure without being affected by the surrounding ground of the bridge.

FIG. 1A is a construction sectional view of a conventional full staging method (FSM method)
FIG. 1B is a construction diagram and cross-sectional view (aa) of a Movable Scaffolding System (MSS)
FIGS. 2A and 2B are a perspective view and an excerpted sectional view of a mobile formwork system installed to be supported on a bridge substructure of the present invention,
FIGS. 2c and 2d are a perspective view and an exploded cross-sectional view of a movable formwork system installed to be supported on a bridge substructure of the present invention,
Figure 2e is a sectional view of a lower portion of a movable formwork system adapted to be supported on a bridge substructure of the present invention;
3A, 3B and 3C are flowcharts of a bridge construction method using a movable formwork system installed to be supported on a bridge substructure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Movable formwork system 100 installed to be supported on bridge substructure 200]

FIGS. 2a, 2b, 2c and 2d illustrate a perspective view and an excerpt of an installation and movement of a mobile formwork system 100 installed to be supported on a bridge substructure 200 of the present invention.

First, the bridge substructure 200 refers to an alternate bridge bridge for supporting the bridge superstructure 300.

2B, the bridge substructure 200 is formed by first installing the pile 210 on the ground and constructing the foundation 220 on the pile 210 of the pile 210. Also, the columnar part 230 is integrally formed on the upper surface of the base part 220.

Thus, it can be seen that the base 220 has a larger planar area than the column 230 exposed to the outside.

The present invention is such that the foundation 220 is stably installed by the pile 210 so that the movable formwork system 100 is supported and installed on the upper surface of the foundation 220 so that the ground conditions around the foundation 220 So that the mobile formwork system 100 can be installed regardless.

As shown in FIGS. 2A and 2C, the movable formwork system 100 is installed to be able to install the bridge structure 300 over two spans, and the bridge structure 300 is constructed by moving the bridge structure 300 by one span in the longitudinal direction It is a mechanized formwork system.

Unlike the conventional MSS method (Movable Scaffolding System), the movable formwork system 100 is installed so as to be directly supported on the base 220 described above, and then the construction of the bridge structure 300 over two spans is completed first It is moved in the longitudinal direction.

The movable formwork system 100 may include a base station 110, a transverse beam 120, a moving bogie 130, a longitudinal movable beam 140, a hypothetical vent 150, And includes a movable die 160.

First, as shown in FIGS. 2A and 2B, the foundation ground 110 is formed such that a concrete block is vertically installed on the upper surface of the foundation 220 so that the upper surface is exposed on the ground surface.

The concrete block can use a beam-shaped block having a size enough to be set on the upper surface of the foundation, and has a function of directly transmitting the load transmitted from the laterally-facing beam 120 to the foundation 220 I have.

2A and 2B, it can be seen that the upper part of the base part 220 is buried in the ground and the upper part of the base part 220 is exposed on the ground surface, 220).

The installation and working loads of the lateral beam 120, the moving bogie 130, the longitudinally movable beam 140, the temporary vent 150 and the movable mold 160 are transmitted to the base portion 110 via the base portion 110, So that the mobile formwork system 100 can be operated regardless of the ground around the bridge substructure.

2A and 2B, the horizontal beam 120 is a kind of guide rail installed to be supported on the upper surface of the foundation foundation 110, and is formed by using a shape beam assembly having an extension length larger than the lateral width of the foundation. .

The rail 121 is formed on the upper surface thereof so that the moving carriage can be moved in the lateral direction by the moving rollers and the lateral support rods 122 are installed at both ends so that the moving carriage 130 can be safely So that the horizontal beam 120 can be separated from the foundation zone and reused.

The lateral beam 120 serves as a guide beam that allows the moving bogie 130 to move in the lateral direction on the upper surface thereof and is capable of stably moving the bogie 130 with respect to the upper surface of the base landing zone 110 It is desirable to provide an additional ground support 123 on the bottom surface of the transverse beam 120 and on the top surface of the ground surface.

The moving bogie 130 is a bogie assembled by using a steel beam or the like moving along the upper surface of the horizontal beam 120. The moving bogie 130 is formed at a lower portion of the bogie 130, As shown in FIG. At this time, the movement can utilize an extrusion device (not shown), which is preferably positioned below the transverse beam.

2d, a girder fixing block 132 for restricting the position of the vertically movable beam 140 is formed on the upper surface of the movable base so as to be positioned on both sides of the longitudinally movable beam 140, A sliding groove 133 in the form of a groove is formed so that the movable beam 140 is easily slidable in the longitudinal direction so that the longitudinally movable beam 140 can be easily moved.

That is, it is possible to easily longitudinally extrude the bottom surface of the longitudinally movable beam 140 using a roller or the like so as to be able to slide along the sliding groove, thereby adjusting the height of the vertically movable beam 140 A hydraulic jack (not shown) is used.

2A and 2B, the longitudinally movable beam 140 may be a hollow box having a predetermined height, a truss assembly, an I-beam, or the like. The beam may be supported by the moving truck 130, Are moved laterally together as they move along the beam and are also moved longitudinally using an extruder after temporally securing the moving bogie to the transverse beam 120 as shown in Figures 2c and 2d.

Such an extrusion apparatus may include a hydraulic jack or a motor capable of extruding a vertically movable beam, and an extrusion apparatus used in an MSS method (Movable Scaffolding System) may be used. Preferably, .

The extended length of the longitudinal moving beam 140 is formed to have an extension length so as to be positioned over the span of the bridge substructure 200 like three bridge piers so that the bridge overhead structure 300 So that the construction can be done all at once.

Next, the hypothetical vent 150 is installed between the upper and lower supports 151 and 152 located above the lower support 151 and the upper and lower supports 151 and 152 installed on the upper surface of the vertically movable beam 140, And has a function of controlling the height of the intermediate support to adjust the height of the intermediate support to adjust the height of the intermediate support to move in the longitudinal and lateral directions together with the vertically movable beam 140, A movable mold 160 is installed.

The upper and lower supports 151 and 152 may be formed using, for example, a beam of shape steel, the intermediate support 153 may be formed of a truss structure and the height of the upper support may be adjusted using a clamp or the like. .

Next, the movable mold 160 is formed as a mold for the bridge overhead structure formed on the upper surface of the hypothetical vent 150, according to the shape of the bridge overhead structure 300.

For example, the bridge overhead structure 300 may include an outer and inner die, including a bottom plate, both sidewalls, and an upper flange form for the upper slab, if the box girder is a box girder, and such outer and inner dies as shown in FIGS. 2c and 2d It is designed to be removable. Such a formwork system can also use an extrusion apparatus used in the M.S.S method (Movable Scaffolding System).

At this time, the movable formwork 160 is a mechanical formwork system installed by longitudinally movable beams and a hypothetical vent, in particular including both exterior and interior moldings including the bottom plate, both sidewalls and the upper slab form at the rear span, By including the outer and inner dies including the bottom plate and both sidewall dies in the span, it is possible to effectively control the amount of steel for forming the formwork for the upper slab in comparison with the Movable Scaffolding System (MSS) .

At this time, an inclined reinforcing material is preferably provided between the lower support 152 and the upper surface of the moving carriage 130 so as to stably support the temporary vent and the movable mold.

2C and 2D, the movable formwork system 100 according to the present invention is set on the base portion 220, the lateral beam 120, and the moving bogie 130, It will be appreciated that the longitudinally movable beam 140, the hypothetical vent 150 and the movable mold 160 are installed over two spans together and are moved longitudinally in accordance with completion of the bridge overhead structure 300 one span.

In the rear span, when the longitudinal movable beam 140, the temporary bent 150 and the movable mold 160 are moved for one span in a state in which the upper slab of the bridge upper structure is not formed, So that the upper slab of the backward span and the upper slab of the forward span are formed together so that the bridge overhead structure integrated in the longitudinal direction can be constructed.

[Bridge construction method using mobile formwork system installed to be supported on bridge substructure]

Figures 3a, 3b and 3c show a flow diagram of a bridge construction method using a movable formwork system adapted to be supported on a bridge substructure.

That is, the bridge overhead structure 300 may be continuously installed over a plurality of bridges using the movable formwork system 100 installed to be supported on the bridge underground structure.

2A and 3A, the bridge substructure is alternately spaced apart from each other in the longitudinal direction. At least three bridges are installed to bridge the bridge structure 300 ).

The present invention contemplates a bridge substructure 200 based on a bridge pier and the bridge substructure 200 includes a pile 210 and a base portion 220 and a pillar portion 230 on a base portion 220 It will be constructed.

Thus, the bridge structure 200 is installed on the upper surface of the column 230 using the movable formwork system 100 every span.

Specifically, a foundation foundation 110 is installed on an upper surface of a foundation 220 of a pier which is a bridge overhead structure 300, and a horizontal beam 120 is supported on an upper surface of the foundation foundation 110 by a ground surface support 123 .

It can be seen that this transverse beam 120 is installed at the base of the bridge pier, the bridge substructure.

A moving carriage 130 is then installed on the transverse beam 120 so that the moving carriage 130 moves along the transverse beam 120 to a self-propelled or non-viscous stock (e.g., And so on).

Next, a longitudinal movable beam 140 is installed on the moving truck 130 over two spans. In this case, the movable formwork system 100 of the present invention is divided into a rear span P1 between the bridge bridges 1 and 2 and a bridge span 2 between the bridge bridges 2 and 3, (Two spans), and the bridge overhead structure 300 can be constructed while moving in the longitudinal direction (right side) by one span.

It will be appreciated that the longitudinally movable beams 140 are set to be supported over the transverse beams 120 installed on the upper surface of the bridge bridges 200 that are three bridging substructures 200, The movable beams 140 can be moved together by the moving carriage 130. [

Next, a temporary vent 150 and a movable mold 160 are installed on the upper surface of the vertically movable beam 140.

At this time, the hypothetical vent and the movable mold installed at the rear span are constituted by the movable mold including the mold for the upper slab in the bridge upper structure 300,

The temporary vent and the movable mold installed at the front span are configured as a movable mold that does not include the mold for the upper slab in the bridge upper structure 300,

Since both the rear span and the forward span do not include a movable formwork and a provisional vent for installing the formwork for the upper slab, it is possible to secure the efficiency and economy of the movable formwork production.

Next, a bridge overhead structure 300 including an upper slab, both side walls and an upper slab is firstly installed by disposing reinforcing bars and tension members necessary for the movable formwork 160 and casting concrete.

In the rear span (A1-A1 sectional view, see Fig. 2b), a bridge superstructure 300 including an upper slab, both sidewalls and an upper slab is formed and a forward span (B1-B1 sectional view, , The bridge overhead structure 300 including only both side walls is formed.

Thus, it is possible to integrally install the bridge overhead structure 300 over two spans, thereby making it possible to construct the bridge overhead structure quickly.

Next, as shown in FIGS. 2C and 3B, the vertically movable beams 140 are moved in the longitudinal direction by using the moving bogie 130 and the transverse beams 120. To this end, the movable molds 160 And the temporary vent 150 are laterally separated from the installed bridge superstructure 300. This is accomplished simply by moving the transverse beam 130 in the lateral direction along the transverse beam 120.

This can be confirmed in the sectional views A2-A2 and B2-B2 of FIG. 3B (see FIG. 2D). That is, in the A2-A2 cross-sectional view, when the moving bogie 130 is self-propelled along the transverse beam 120, or visa stock moves (e.g., an extrusion device installed on top of the transverse beam), the hypothetical vent 150 and the movable mold 160 , It can be seen that the longitudinally movable beams 140 are moved together in the lateral direction.

The vertically movable beam 140 is extruded from the bridge overhead structure 300 of the rear span after the temporary vent 150, the movable mold 160 and the longitudinally movable beam 140 are moved in the lateral direction (E.g., using an extrusion device installed on the upper portion of the transverse beam) with the movable mold 160 in the longitudinal direction.

Accordingly, since the vertical movable beam 140 moves near the ground surface, the center of gravity of the movable vertical beam 140 can be lowered during the movement, so that the temporary vent and the movable formwork can be more stably moved.

Next, as shown in FIG. 3C, a longitudinally movable beam 140 is moved in the longitudinal direction (longitudinal direction) so that the movable mold 160 including the mold for the upper slab is positioned in the bridge overhead structure 300 installed in the forward span P2. When the movement is completed, the forward span P1 initially becomes the rear span and the new forward span P3 is set.

Therefore, in the rear span (originally P2) and new forward span (P3), necessary reinforcing bars and tensions are also arranged by using mobile formwork and concrete is laid so that the bridge overhead structure 300, which was originally a forward span, So that the bridge superstructures of the rear span are integrated with each other. That is, the upper slabs are integrated with each other.

Further, the new forward span is constructed by installing the bridge overhead structure 300 excluding the upper slab, thereby completing the construction of the bridge outline structure according to one span movement.

The bridge overhead structure can be continuously installed on the span while the longitudinally movable beams 140 are moved in the longitudinal direction by one span successively.

Accordingly, in the method of constructing the bridge of the present invention, the setting position can be adjusted by using the hydraulic jack when the bridge superstructure is completed and the temporary vent and the movable formwork are separated and installed.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Mobile formwork system
110: Foundation land zone
120: transverse beam
121: rail 122: side support
123: ground surface support 130: moving lane
131: moving roller 132: girder fixing block
133: Sliding groove 140: Vertically movable beam
150: hypothetical vent 151: lower support
152: upper support 153: intermediate support
200: bridge substructure 300: bridge superstructure
P1: forward span P2: rear span
P3: New front span

Claims (4)

A method of constructing a bridge using a movable formwork system comprising a moving bogie installed on a transverse beam, a longitudinally movable beam installed on an upper surface of the moving bogie, a temporary bent installed on an upper surface of the longitudinally movable beam,
(a) After installing the transverse beam of the mobile formwork system directly on the foundation of the bridge substructure including the alternating, pier, the backspan (P1) over the two spans using the movable formwork system, And the front span P2 is used to construct the bridge superstructure without installing the upper slab,
(b) moving the moving truck in a lateral direction so that the mobile formwork system is first detached from the constructed bridge overhead structure,
(c) moving the vertically movable beam of the movable formwork system moved in the transverse direction by one span in the longitudinal direction together with the hypothetical vent and the movable formwork so that the upper slab of the forward span (P2) The new forward span (P3), together with the construction of the structure, includes the step of installing the bridge superstructure without installing the upper slab, so that the workload of the mobile formwork system is transferred directly to the foundation through the longitudinally movable beam And,
The movable formwork includes both a bottom plate, both sidewalls and an upper slab form at the rear span, a bottom plate and both sidewall formers at the forward span,
The method of claim 1, wherein, in the step (b), when the moving truck is moved along the transverse beam, the movable venting mold installed to be supported by the bridge substructure is moved in the lateral direction together with the temporary vent, the movable mold, A method of bridge construction using system. The method according to claim 1,
In the step (a), a foundation site is installed on the upper surface of a foundation part of the bridge substructure, so that a lateral beam is directly supported on the foundation site exposed on the ground surface, so that a lateral beam of the movable formwork system is directly Wherein the transverse beam is supported on a bridge substructure for stably setting the transverse beam on the ground surface by an additional ground support mounted on the ground surface. 3. The method according to claim 1 or 2,
In the step (b), a sliding groove is formed on the upper surface so that the vertically movable beam can be extruded in the longitudinal direction. The sliding groove is formed on the bottom surface of the longitudinally movable beam 140, To support a longitudinally movable extrusion of the longitudinally movable beam (140). ≪ RTI ID = 0.0 > [0002] < / RTI > 3. The method according to claim 1 or 2,
The longitudinally movable beam in the step (c) uses a hollow box, a truss assembly, or an I-beam, which is installed on the upper surface of the moving carriage. The moving box moves transversely as the moving carriage moves along the lateral beam. The bridge beam is fixed to the direction beam 120 and then supported by the bridge substructure to be moved in the longitudinal direction using an extrusion apparatus.

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