KR20040100083A - Bridge construction method is by means of Incremental launching method using lateral launching apparatus - Google Patents

Abstract

PURPOSE: A construction method for a bridge by ILM(Incremental Launching Method) using a horizontal shift unit is provided to apply for the horizontal alignment of a bridge having various curved shapes by receiving the horizontal force of an upper structure of a bridge and making horizontal movement possible. CONSTITUTION: The construction method for a bridge by ILM(Incremental Launching Method) using a horizontal shift unit comprises the steps of: completing the extrusion of an upper structure(300a) in a lower structure by manufacturing and extruding segments for an upper structure of a bridge continuously in a mold manufactory; installing a first bridge on a lower structure of parallel bridges installed next to the extruded upper structure(300a) by moving the extruded upper structure(300a) horizontally using a horizontal shift unit(400) installed between lower structures; and completing parallel bridges by manufacturing and extruding segments for an upper structure of a bridge in the same mold manufactory again.

Description

Bridge construction method is by means of Incremental launching method using lateral launching apparatus

The present invention relates to a bridge construction method by a continuous extrusion method using a transverse movement means. More specifically, a plurality of bridges hypothesized in parallel with the up and down lines and the planar shape of the bridges are not straight lines or single curves with a constant radius of curvature. In the case of the up and down parallel bridges, the bridge superstructures are manufactured by step forming in one mold shop and completed by extrusion, and the bridge superstructures are used on the substructures of the parallel bridges installed next to the extruded bridges. To complete the first bridge of parallel bridges, and to make and complete the parallel bridges by making and extruding the second bridges of the parallel bridges step by step again at the same mold fabrication site, and producing at least two bridges one mold. Hypothesis is generated by using cabinets, so it occurs when the mold manufacturing site is installed for each up and down line. Solves the problems such as difficulty in securing the working site, excessive cost of installation of mold workshop, increase of cost by installing one-time temporary equipment and temporary materials, and the construction of bridges by conventional continuous extrusion method (ILM) The extrusion trajectory generated at the time was applicable only to a bridge with a constant straight line or a single curve. In order to accommodate the lateral horizontal forces of the bridge superstructures and to move them horizontally, the continuous extrusion method (ILM) can be applied to the planar linear of bridges with various curves. It relates to a bridge construction method.

The continuous extrusion method (ILM) extrudes the bridge superstructure segments manufactured at the mold fabrication station installed at the rear of the bridge on the bridge undercarriage such as the bridges and bridges already installed by using an extrusion apparatus to finally complete the bridge. It is a construction method.

The bridge construction by the continuous extrusion method is required to be required to install the mold workshop, and there are some differences depending on the bridge type, but in the case of a general prestressed concrete bridge, the mold production site 100 is a material loading, segment In order to perform a series of tasks such as formwork installation, steel assembly, concrete pouring and curing, prestressing,

1A and 1B, the running section 10 including the cross-linking angle 11, the foundation concrete 12, and the extrusion shift 13, the installation section of the segment fabrication table 20 provided with the segment mold, It requires the formation of a work site including a rear clearance 40 for securing the installation section and transportation path of the steel assembly table 30 for assembling and fabricating the steel installed in the segment, and unloading as shown in FIG. 1C in the width direction. Side clearance 60 is required to install the roof structure 50 and the like for the installation of equipment and segments.

This working site can be secured by breaking or filling the ground to have a predetermined area as shown in FIG. 1D.

At this time, if the mold production site is located in the soft soil, the foundation pile should be installed to secure the required bearing capacity.If the mold production site is located in the cut area where the rock layer and the soil slope exist, rock excavation and dumping should be carried out. In addition, the installation work of the mold shop, such as the increase in the length of cut slope, is an essential part of the ILM bridge, and the economic feasibility of installing the mold shop is a factor that can determine the application of the ILM bridge construction. do.

Figure 1e is a plan view and side view of the completion of the extrusion of one of the upper bridge structure 70, the extrusion of the down line bridge structure 80 is almost completed in the case of constructing the up and down parallel bridge using the ILM method It is shown that, in order to construct the up and down line at the same time, two mold manufacturing workshops (100, up, down line) are installed. As a result, the work area for the mold fabrication workshop will be larger, and if it is impossible to secure a work site, other additional facilities will be required to replace it. Therefore, the application of the ILM method will be limited (economical efficiency in the extension of the bridge of about 500M). Can be secured), the use of temporary equipment such as segment extrusion equipment, cross-linking angle, foundation concrete, extrusion shift, guide beam installed on the piers, propulsion nose, etc. As a result, the increase in construction cost is inevitably increased, and in general, when the upper and lower bridges must be constructed in close proximity to each other, the workability of the molding shop and the segment production are very poor due to the narrowing of the formwork and the work space. Was,

1F and 1G show a planar linear shape of a bridge that can be bridged by a conventional ILM method. That is, FIG. 1F illustrates a case in which the upper bridge structure 300a is extruded by using the ILM method when the planar linear shape of the bridge is straight. FIG. 1G illustrates the use of the ILM method when the planar linear shape of the bridge is a single curve. By the extruded bridge upper structure (300a) is shown. That is, the bridge construction by the conventional ILM method can be applied only when the extrusion trajectory of the bridge is a single curve or a straight shape when the upper structure of the bridge is extruded, and the position of the extrusion bridge device installed on the bridge undercarriage such as the bridge is This is because it is fixed at a specific position and cannot be changed in response to the trajectory change during the extrusion of the bridge upper structure. Therefore, there is a problem that the planar linearity of the bridge to which the ILM method can be applied is very limited in bridge construction and design.

An object of the present invention is to produce a bridge by extruding a plurality of bridge upper structure by the ILM method, such as parallel bridges up and down, in the state of extruded after producing the step of the bridge superstructure in one mold workshop By moving the extruded bridge upper structure laterally to the lower structure of the parallel bridge installed next to the extruded bridge, the first bridge of the parallel bridge is completed, and again in the same mold manufacturing site By extruding the bridge superstructure and finally completing the parallel bridge, the bridge can be completed by the ILM method even for the bridge extension (about 200M), which is difficult to apply the ILM method due to the economic problems caused by the installation of the mold manufacturing plant.

It is still another object of the present invention that the conventional ILM method is applicable only to a straight or single-curve bridge with a constant extrusion trajectory generated during the extrusion of the bridge, but in the case of a compound curve in which the extrusion trajectory changes during the extrusion of the bridge By using the transmission means and the transverse movement means to accommodate the lateral horizontal force of the bridge superstructure generated when the extrusion trajectory is changed, and to allow the transverse movement, it is possible to move the bridge in a variety of curved forms. It is to allow the construction by the ILM method.

Another object of the present invention in the construction of the bridge by the ILM method, after completing the extrusion of one bridge upper structure, and installed by moving the bridge upper structure extruded to the parallel bridge substructure installed next to the extrusion bridge in the lateral direction In the case of early opening, when the two upper bridge structures are completed and then opened, the early opening of the bridge can be made faster in case of heavy traffic.

Still another object of the present invention is to move the extruded bridge upper structure in the transverse direction, the transverse moving means installed to be able to repeat the use of the ILM method more economically to complete the bridge.

1A and 1B are a plan view and a side view of a conventional mold making shop,

Figure 1c is a cross-sectional view showing the side clearance of a conventional mold production site,

Figure 1d is a cross-sectional view of the trench for the mold shop,

Figure 1e is a plan view and a side view showing one step of the construction by the conventional continuous extrusion method (ILM),

1F and 1G show a bridge planar line of straight and single curve type to which a conventional continuous extrusion method (ILM) can be applied.

Figure 2a, Figure 2b, Figure 2c, Figure 2d, Figure 2e and Figure 2f is a plan view and side view of the bridge in the order of the bridge construction method using the continuous extrusion method of the present invention.

3A and 3B are front and side views of the transverse movement means of the present invention.

Figure 4a shows a lateral force transmission means and a partial detail thereof of the present invention,

Figure 4b shows the operating state of the lateral force transmission means of Figure 4a.

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

100: mold shop 200a, 200b: bridge undercarriage

300a, 300b: bridge upper structure 400: transverse movement means

500: mobile device 600: transverse force transmission means

The present invention in the construction of a plurality of parallel bridges, such as the up and down parallel bridges by the ILM method, instead of completing the bridge by extruding the upper structure of the bridge by installing each mold workshop for each up and down bridges as in the prior art After exposing the bridge upper structure segment stepwise to the bridge substructure by installing one mold manufacturing site, the upper part of the bridge extruded to the substructure of the parallel bridge installed next to the extrusion bridge is completed. Move the structure laterally to complete the first bridge of the parallel bridge, and then build and extrude the bridge superstructure segments of the new parallel bridge step by step at the same mold production site to finally complete the parallel bridge, In the case of a bridge having a lateral force control means to which the ILM method can be applied, The technical feature is that by equipping the cart, the economical efficiency of the bridge construction by the ILM method can be improved and the scope of application can be extended.

Best Mode for Carrying Out the Invention The best embodiment of the present invention will now be described with reference to Figs.

The present invention comprises the step of completing the extrusion of the bridge upper structure (300a) by continuously extruding the segments in one mold production shop 100 to the newly installed bridge lower structure (200a); The extruded bridge upper structure is moved in parallel to the lower structure 200b of the parallel bridge installed next to the extruded bridge by using the horizontal moving means 400 provided between the bridge lower structures 200a and 200b. Completing the first bridge of the bridge; And continuously extruding the segments of the parallel bridges again in the same mold fabrication workshop to complete the extrusion of the new bridge upper structure 300b to finally complete the parallel bridges.

2A to 2F are bridge construction flow charts according to the ILM method according to the present invention. In particular, when the two up and down parallel bridges are to be constructed by the ILM method, a bridge construction flow chart is shown.

FIG. 2A includes a segment 1 310 and a propulsion nose 320 (NOSE) only in the downworking mold manufacturing site 100 when a bridge is constructed by the ILM method on each of the uphill line A and the downline B. FIG. The top and side views of the state before the bridge upper structure 300a is shown.

From the mold fabrication site (100, Fig. 2a is shown schematically only the bridge angle, the foundation shift and the mold production stage), the bridge substructure 200a, such as the bridge 210a, is provided in the direction in which the bridge is installed, The installation timing of the piers may be determined in consideration of the extrusion speed.

In the present invention, in order to construct an uphill bridge, there is no separate upholstery mold shop, but it is well known that the installation cost of such a mold shop occupies a considerable proportion in the bridge construction by the ILM method. In the case of a short extension, it is difficult to apply the ILM method due to economic problems.

In addition to the installation cost of the mold production site itself (the excavation work of the molding work site, the installation cost of the mold production stand, the propelling nose production and installation cost, the crosslinking angle, the production and installation cost of the extrusion device, the installation cost of the foundation piers) When extruded the bridge superstructures on each bridge undercarriage, temporary materials such as extrusion bridges and guide beams are installed. All of these equipments and facilities are one-time facilities that cannot be reused after construction is completed. It is true.

The present invention can reduce the installation cost of the mold manufacturing shop that can only be manufactured and installed like the conventional ILM method, because the whole bridge can be constructed even if only one mold manufacturing shop manufactures the upper structure as described below. There is an advantage that it is possible to construct bridge by economical ILM method.

Figure 2b is a plan view and side view showing a state of constructing the bridge upper structure (300a) by making and extruding the segment step by step in the mold making, while further completing the bridge (210a) of the up and down line in succession .

Figure 2c is a plan view and a side view showing the completion of the extrusion of the first bridge upper structure 300a to the bridge and the bridge substructure of the down line. At this time, the propulsion nose constituting the upper structure of the bridge is to be used for extruding the upper structure of the bridge again after dismantling, it is possible to reuse in the final extrusion of the parallel upper structure without dismantling the guide beam installed in each bridge.

Figure 2d is a state in which the upper structure of the bridge to the downward line is completed, the propulsion nose 320 is dismantled, and by using the lateral movement means 400 installed between the two bridges to the lower structure of the parallel bridge installed next to the extrusion bridge The moving state is shown in a plan view and a side view.

The number and position of the transverse movement means 400 may be determined depending on the size of the upper structure of the bridge, the working air, and the form of the bridge installation (straight bridge, single curve bridge, composite curve bridge, etc.).

3A and 3B show the transverse moving means 400 installed in the piers 210a and 210b in front and side views.

The transverse movement means 400 of the present invention is installed and moved to the movement balance support means 410 including the movement balance guide means 412 and the movement balance guide means 412, and the bridge lifting means 422 at the upper portion. Includes; a mobile cart 420 is installed.

The moving cart support means 410 is installed between the pier 210a installed on the down line and the pier 210b provided on the up line, and the bridge upper structure 300a extruded on the down line is transverse to the bridge lower structure on the up line. It has a function of supporting the moving trolley 420 installed to move in the direction, the guide rail which is the moving trolley guide means 412 for the movement of the mobile trolley is formed in the upper portion as shown in Figs. 3a and 3b.

That is, the moving device 421 formed on the lower surface of the moving cart 420 directly supporting the extruded bridge upper structure 300a by the bridge elevating device 422 along the guide rail which is the moving cart guide means 412. As the roller rolls), the upper structure of the bridge eventually moves.

The moving cart support means 410 is a support beam formed in the axial direction as shown in Figures 3a and 3b; (411, two each installed in the upper and lower pier, but the number is changeable, manufactured and installed in the form of a bracket It is a beam-shaped structure formed so as to slightly project between the two piers (210a, 210b) in the transverse direction across the support beam 411, the upper portion of the guide trolley guide means (412, guide rail) Is installed, both ends are lateral guide beams 414, the side reaction zones (413a, 413b) is formed vertically.

The support beam 411 serves as a support band in which the lateral guide beam 414 can be installed in the transverse direction between the piers 210a and 210b, and is supported by the piers in the shape of beams in FIGS. 3A and 3B. However, any structural member (bracket) installed in the axial direction irrespective of its shape and structure belongs to the support beam.

The lateral guide beam 414 is a member which is supported by the support beam 411 and installed in the pier in the lateral direction, as shown in Figure 3b may be formed on each side before and after the bridge, one may be installed only on either side. have. A mobile trolley guide means 412 including a guide rail, such as an I-type rail, is formed on the upper side of the transverse guide beam, and the mobile trolley guide means 412 is a mobile trolley for directly supporting the extruded bridge upper structure 300a. 420 serves as an induction furnace to move in the transverse direction, by forming one or more, to ensure the stability when moving the moving cart.

The side reaction zones 413a and 413b are plate-shaped members formed perpendicular to both ends of the lateral guide beams 414 as shown in FIG. 3A, and are provided on the side of the moving cart 420 supporting the extruded bridge upper structure. One end of the moving cart speed control means 450 may serve as a support band of the transverse extrusion means 440 installed in contact with the side reaction zone 413b formed on the opposite side thereof.

The moving cart 420 has a moving device 421 such as a guide roller corresponding to the moving cart guide means formed on the transverse guide beam 414 while directly supporting the extruded bridge upper structure 300a by the bridge elevating means. It is formed in the lower portion, the upper portion is provided with a bridge lifting means 422 that can move the bridge upper structure up and down.

When the extruded bridge upper structure 300a is moved in the lateral direction, first, the bridge elevating means 422 is operated to raise the bridge upper structure 300a from the extruded bridge device installed in the bridge lower structure once, thereby moving the trolley ( In a state where the upper structure of the bridge is to be carried on the 420, by operating the lateral extrusion means 440 formed on the side of the moving trolley, a moving device 421 such as a guide roller installed in the lower portion of the moving trolley supports the horizontal support beam. Moving along the moving guide means 412, such as the guide rail of 414, and thus the bridge upper structure 300a can be moved together in the transverse direction.

At this time, the lateral extrusion means 440 and the bridge elevating means 422 may be used as a latex jack, the moving trolley material, size, structure and the number of installation can be designed according to the size of the extruded bridge upper structure, etc. have.

The bridge upper structure 300a moved laterally is operated on the bridge device of the bridge lower structure 210b, such as the bridge and the alternating bridge installed for the upward line A, and operates the bridge elevating device installed on the moving trolley. You just have to descend down.

When extruding the bridge upper structure 300a in the axial direction, each bridge piers are provided with a bridge device, and the roller device 500 may be installed as shown in FIG. 3B for the extrusion. It is fixed to the moving trolley, the upper portion of the roller portion is formed so that the bridge upper structure is easily extruded in the axial direction by the roller portion.

FIG. 1F illustrates a case in which the upper bridge structure 300a is extruded by using the ILM method when the planar linear shape of the bridge is linear, and FIG. 1G illustrates the use of the ILM method when the planar linear shape of the bridge is a single curve. The case of extruding the bridge upper structure 300a is shown. That is, the bridge construction by the conventional ILM method can be applied only when the extrusion trajectory of the bridge is a single curve or a straight shape when the upper structure of the bridge is extruded, and the position of the extrusion bridge device installed on the bridge undercarriage such as the bridge is This is because it is fixed at a specific position and cannot be changed in response to the trajectory change during the extrusion of the bridge upper structure.

However, in the case of a compound curve, if the cross-sectional structure can be accommodated in the extrusion process of the bridge upper structure so that the upper structure can move in the lateral direction at the site where the extrusion trajectory is changed, the linear or single curve shape is more suitable. Furthermore, the ILM method can be applied to bridge flat linear lines having various curved shapes.

Accordingly, the present invention is provided with a transverse force transmission means 600 in the mobile trolley and the bridge upper structure to accommodate the horizontal load in the horizontal direction in accordance with the change of the extrusion trajectory during extrusion of the bridge upper structure, the extrusion trajectory To allow the transverse movement of the bridge superstructure according to the change of.

The lateral force control means 600 is installed in place of the bridge device on the piers of the position where the extrusion trajectory is changed, as shown in Figure 4a, so that the mobile cart receives the lateral force transmitted by the upper bridge structure 300a Lateral force receiving means 610 having a function to do; And a transverse force transmitting means 620 installed on the lower surface of the bridge upper structure so as to be engaged with the transverse force receiving means. The bridge upper structure 300a is transversely moved and then dismantled so as to be repeatedly used. do.

Lateral force receiving means 610 is the roller unit 511 in contact with the upper surface of the lower structure of the bridge, while the body 512 is fixed to the upper surface of the moving trolley, like the roller device 500 of Figure 3b The mobile truck can accommodate the lateral horizontal force of the bridge upper structure without restraining the extrusion in the axial direction of the bridge upper structure, and FIG. 4A shows a case where the roller device 500 is used as the lateral force receiving means. will be.

The transverse force transmitting means 620 is a media member for transmitting the transverse horizontal force of the bridge upper structure 300a to the transverse force receiving means 610, and the portion shown in the upper left of FIG. 4A as the transverse force receiving means. It may be installed on the lower surface of the bridge upper structure such that the side is engaged with the roller device 500 as shown in detail 1, the roller portion of the pre-roller device 500 as shown in the partial detail 2 shown in the lower left of Figure 4a The transverse force transmission means 420 may be provided as a channel shape in which a groove is received.

By the roller apparatus 500 which is the lateral force receiving means 610 engaged with the side surface of the lateral force transmission means 620 provided in the lower surface of the bridge upper structure so that the side surface may engage with the roller apparatus 500 as shown in FIG. Since the horizontal force due to the extrusion of the bridge upper structure 300a is transmitted to the moving trolley 420, and the moving trolley can be moved by the guide rail which is the moving trolley guide means, so the bridge upper structure is free to move horizontally. It is possible to accommodate the change in the extrusion trajectory of the bridge upper structure 300a.

3A, the moving cart speed control means 450 is installed on the right side of the moving cart 420, and the moving cart is moved by the movement of the transverse extrusion means installed in the left side reaction zone 413a. When moving over the guide means 412, the method of controlling the speed may control the operation of the transverse extrusion means 440, but it may not be easy to control the movement of the moving truck, which is heavy, and other special control. In the present invention, it is possible to control the moving speed of the mobile truck while dismantling the combined block according to the movement of the mobile truck by continuously combining the blocks in the transverse direction in the present invention.

Figure 2e is to move the extruded bridge upper structure 300a laterally installed in the bridge lower structure (210b, up line), and again extruded the segment in the same mold workshop extruded a new bridge upper structure (300b) The state is shown in top and side views.

At this time, if the finishing treatment, such as forming a pavement on the bridge upper structure moved in the lateral direction, there is an advantage that can be opened in advance when the connection road is completed.

FIG. 2F illustrates a top view and a side view of a state in which the bridge upper structures 300a and 300b are extruded to complete the bridge in both the uplink and the downline.

In constructing a number of up and down parallel bridges by the continuous extrusion method, the upper part of the bridge structure manufactured in one mold shop is completed, and the transverse movement means is provided on the lower structure of the parallel bridge installed next to the extruded bridge. Can be used to complete the first of the parallel bridges, and again, the same structure can be extruded from the upper part of the parallel bridges to finally complete the parallel bridges. Since only the floor is installed, it is possible to remarkably reduce the installation cost of the mold manufacturing plant which occupies a large part of the provisional equipment of the bridge. As a result, it is possible to increase the utilization of the ILM method, and the transverse direction means is designed to be used repeatedly. Since it can be reused later, it is economical and has the advantage of being able to be applied effectively in places with high traffic volume because of the quick opening of the bridge structure. In addition, the conventional ILM method can be applied only to a bridge of a straight line or a single curve of the extrusion trajectory generated during the extrusion of the bridge, the present invention, even in the case of a compound curve in which the extrusion trajectory changes during the extrusion of the bridge transverse force And the transverse movement means accommodates the lateral horizontal force of the bridge superstructure caused by the change of extrusion trajectory and enables the transverse movement. Construction will be possible.

Claims (6)

In the bridge construction by the continuous extrusion method, a number of bridges constructed in parallel with the up and down lines, Step-by-step fabricating and extruding the bridge superstructure segments in the mold fabrication plant in the bridge substructure to complete extrusion of the bridge superstructure; Installing the first bridge of the parallel bridge by horizontally moving the extruded bridge upper structure to a bridge lower structure of the parallel bridge installed next to the extruded bridge upper structure; And Finally manufacturing the bridge superstructure segment again and step by step in the same mold production plant to finally complete the parallel bridge; Bridge construction method by the continuous extrusion method using a lateral moving means comprising a. According to claim 1, wherein the installation of the lateral movement means, Installing a transverse support means between the bridge undercarriage, the transverse support means comprising a moving cart guide means; And Installing a moving trolley installed on the moving trolley guide means of the transverse supporting means and having a bridge lifting means installed thereon; Bridge construction method by the continuous extrusion method using a lateral moving means comprising a. The method of claim 2, wherein the transverse force receiving means is further provided on the upper surface of the moving trolley and the transverse force transmitting means on the lower surface of the bridge upper structure corresponding to the transverse force receiving means. The upper portion of the means is formed with a roller portion, the upper structure of the bridge is extruded in the axial direction, the lower body is formed is fixed to the moving trolley, the lateral force transmission means is a member of the shape that is engaged with the lateral force receiving means Bridge construction method by the continuous extrusion method using a transverse movement means characterized in that it can accommodate the extrusion trajectory of the compound curve. 3. The transverse movement of the extruded bridge superstructures as recited in claim 2, wherein Installing the trolley in contact with the transverse extrusion means installed in the side reaction zone of the transverse support means and raising the extruded bridge upper structure using the bridge elevating means of the mobile trolley; And Operating the transverse extrusion means to move the moving trolley in the lateral direction and then lowering the moved bridge upper structure using the bridge elevating means of the moving trolley; Bridge construction method by the continuous extrusion method using a lateral moving means comprising a. The method of claim 4, wherein before lowering the bridge upper structure, And continuously controlling the transverse movement speed of the mobile truck by using the mobile truck speed control means installed between the mobile truck and the other side reaction zone of the transverse support means. Bridge construction method by construction method. The speed control of the mobile truck using the mobile truck speed control means Installing a plurality of connecting blocks between the moving cart and the other side reaction zone of the transverse support means; And In accordance with the transverse extrusion of the moving cart, the step of disassembling the connecting block in turn to prevent the rapid movement by being supported by the connection block is not disassembled; Bridge construction method by the continuous extrusion method using a lateral moving means comprising a.