KR100571525B1 - Extension method of bridge using concrete structure - Google Patents

Abstract

The present invention extends the lower space of bridges installed in rivers, minimizes damages such as damage and loss of bridges due to increased river flow, typhoon and heavy rains, etc. The present invention relates to a method for expanding a bridge using a concrete structure that can be expanded without interrupting the passage of pedestrians, vehicles and trains, especially trains, even during the extension of the bridge.

According to the expansion method of the bridge using the disclosed concrete structure, the step of installing the concrete structure at a predetermined position to be extended from the second shift on one side; Installing a temporary passage means at an upper end of the concrete structure and the second shift; Digging step of digging soil between the second shift and the concrete structure; Installing a new shift in the concrete structure side direction; It is characterized by consisting of the step of placing the concrete, tosa filling and backing up the temporary shift means and restoration of the means of transportation by the backfill between the new shift and the concrete structure.

As a result, it is possible to expedite the construction without any construction restrictions when the bridge is extended, and it is effective to shorten the construction period and reduce the construction cost, and reinforce the bridge connection section at the same time, and it does not interfere with the operation of pedestrians, vehicles and trains, especially trains. There is an effect that can proceed without construction.

Bridge, extension, concrete, train, structure, construction

Description

Expansion method of bridge using concrete structure

1 is a view schematically showing a conventional bridge extension construction method,

2 is a perspective view of a first embodiment of the present invention;

2A and 2B are views sequentially listing the construction method of the first embodiment;

3 is a perspective view of another embodiment of the first embodiment,

3A and 3B are views sequentially showing the construction method of FIG. 3;

4 and 4a show a second embodiment,

5 and 5a show a third embodiment,

6 to 6b are views showing in sequence the construction method of the fourth embodiment of the present invention;

7 to 7b are views showing in sequence the construction method of the fifth embodiment of the present invention;

Explanation of symbols on the main parts of the drawings

1: guardrail 2: handrail

3: press

100: rail 200: sleeper

300: teaching device 300a: new teaching device

10: concrete structure 21: pedestal means

20: Girder 20a: Temporary means of transportation

22: Cast in place

30: first shift 30a: second shift

30b: new shift 50: extension bridge

60: first support structure 61: foundation concrete

62: second support structure 63: mobile bogie rail

70: new slab 80: prefabricated bracket

The present invention extends the lower space of bridges installed in rivers, minimizes damages such as damage and loss of bridges due to increased river flow, typhoon and heavy rains, etc. The present invention relates to a method for expanding a bridge using a concrete structure that can be expanded without interrupting the passage of pedestrians, vehicles and trains, especially trains, even during the extension of the bridge.

Bridges are generally recognized as civil structures, such as overpasses on railroads and roads, or bridges across rivers, and these bridges are composed of girders and decks that are installed across bridges, bridges, and their tops. Consists of an upper structure, the upper structure is to be supported as a bridge device installed on the pier and the alternating upper side, it is to be installed and installed to enable the expansion or contraction action according to the stretching stress applied to the upper structure after construction.

As part of the expansion of such bridges, the conventional railway underground crossing method is largely divided into two types, one is an open-ended method and the other is a non-opening method.

Each method is subdivided into several methods, and only one is extracted. First, the open construction method includes a special ship laying method for expanding the bridge by laying roads and special ships so as to bypass a vehicle, a pedestrian or a train as shown in FIG. 1. In other words, before carrying out the extension work of the bridge, by installing a bypass road and a special line in advance of the bridge and adjacent to it, the vehicle, a pedestrian or a train can be detoured in advance, so that the traffic jam on the surrounding road during the extension work of the bridge. The bridge was extended and / or the trains were running smoothly.

However, this is a practical problem that can not install the bypass road in the extension work of the bridge in the urban center of poor environment due to frequent traffic jams or in the area where the buildings or houses are concentrated around the bridge, and the separate road for installing the bypass road There was a problem that the construction period was additionally required along with the enormous construction cost due to the mobilization of personnel and equipment, and there were problems such as frequent complaints caused by the inconvenience of bypass.

In addition, there is a front jacking method among the non-opening method, although not shown in the drawing is a method of towing the structure to a predetermined position under the track using a hydraulic front jack after the structure is manufactured outside the train line.

The front jacking method is classified into one-sided, mutual, and split-tensioning methods according to the towing method. None of the construction costs are expensive, and oscillation equipment and towing equipments due to box towing are provided. Necessity, there is a problem that requires a lot of work space because the box (Box) is manufactured outside the track.

On the other hand, bridges that need to pass through rivers due to heavy rains, local torrential rains, and typhoons that occur every year are constructed 10 to 30 years ago, and the span lengths are often less than 30m. Trees and garbage were caught in the bridges, blocking the passageway of the bridges, and the bridges acted as dams, causing the floodwaters to cross the banks and cause damage to life and property in villages around the rivers. In response to this, the Ministry of Health and Welfare prepared the 'Facilities for Strengthening Facility Design Standards (262.9.26)' with the main goal of increasing the free space of existing and new bridges by changing the margin of facilities placed in rivers as a countermeasure. In line with this standard, the design standards such as slope of slope and design frequency and free space for railroad bridges were revised and implemented.

In view of the revised main contents in accordance with the present invention, the design frequency at the time of estimating the capacity of the drainage system is 50 → 50 to 200 years for small bridges, 100 to 200 years for long bridges, and the cross-section of urban and group houses. The culvert was strengthened from 25 to 50 years, the rail side was 5 to 10 years, and the roadside slope drainage system was also from 5 to 10 years.

In particular, in the case of railroad bridges, the standard for determining the space under the bridge is determined based on the planned flood volume. Proceeding with this problem will result in a huge amount of money and time.

Accordingly, the construction method of the present invention can be shorter in construction time and lower in construction cost than the conventional bridge expansion method, and can be constructed without affecting the passage of pedestrians, vehicles and trains, especially trains. The need is more urgently needed.

The present invention has been invented to solve the above problems, minimize the damage of bridges, loss, such as the river flow increase and typhoon and heavy rain due to urban development and can be applied to the construction of riverbed roads It is an object of the present invention to provide a method of extending a bridge using a concrete structure that can be expanded without interrupting the passage of pedestrians, vehicles and trains, especially trains, even during the extension construction.

In addition, there is another purpose to provide a method for reducing and shortening the excessive construction cost and construction period.

The present invention for achieving the above objects, in the conventional bridge extension construction method for establishing and expanding the lower space of the bridge and the opening of the lower road, to install a concrete structure at a predetermined position to extend from the second shift on one side step; Installing a temporary passage means at an upper end of the concrete structure and the second shift; Digging step of digging soil between the second shift and the concrete structure; Installing a new shift in the concrete structure side direction; Concrete filling and backfilling between the new shift and the concrete structure consists of a step of removing the temporary means of transportation and recovery of the means of transportation.

In addition, in the lateral direction of the concrete structure may be made of a ramen bridge in contact with the side of the second shift instead of a new shift and connected by a plurality of rebars.

In addition, in the lateral direction of the concrete structure may be made of a box (BOX) in contact with the side of the second shift instead of the new shift and connected by a plurality of rebars.

In addition, the concrete structure is constructed by using a gap without changing or removing the rails and sleepers.

In addition, the temporary passage means is made by further installing a pedestal means on the upper end of the concrete structure.

On the other hand, there may be a plurality of embodiments of the present invention, hereinafter will be described in detail with respect to the most preferred embodiment.

Through this preferred embodiment the objects, other objects, features and advantages of the present invention will become more apparent from the following description with an embodiment according to the present invention in connection with the accompanying drawings shown for the purpose of illustration.

In addition, in each figure used for description, the same component may be attached | subjected, and may show the same number, and the overlapping description may be abbreviate | omitted.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the method of expanding the bridge using a concrete structure according to the present invention.

<First Embodiment>

2 and 2a, 2b is a view showing a first embodiment of the present invention, the extension method of the bridge using the concrete structure of the first embodiment of the present invention is as follows.

Bridge expansion method according to the first embodiment of the present invention, the step of installing the concrete structure 10 in a predetermined position to be extended from the second shift (30a) of one side; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10); Between the new shift (30b) and the concrete structure (10), the backfill 40 is made of concrete, tosa filling and the temporary passage means (20a) demolition and recovery means.

3 to 3B are views of still another embodiment of the first embodiment, in which Fig. 2 is a bridge expansion embodiment in a road bridge and Fig. 3 is a bridge expansion embodiment in a railway bridge.

Here, the embodiment of the railway bridge and the embodiment of the road bridge are the same.

However, since the meaning of the temporary traffic means 20a and the traffic means is changed only according to the embodiments of the road bridge and the railroad bridge, the railroad bridge drawings, which is another embodiment of the first embodiment, are referred to for reference. From the beginning, no railway bridge drawings were attached.

The temporary traffic means 20a and the traffic means refer to asphalt pavement and temporary bridges in road bridges, and in railroad bridges, it means attachments necessary for moving trains such as rails and sleepers and temporary girder.

Therefore, hereinafter, another embodiment of the railway bridge according to the first embodiment of the road bridge will be described, and descriptions of other embodiments of the railway bridge according to the second embodiment of the road bridge will be omitted.

3 and 3a of the concrete structure 10 is a gravity-type concrete pile between the rail 100 and the rail 100 or between the sleepers 200 and sleepers 200 or between the rails 100 and sleepers 200. At least one hole is made, and at this time, the rail 100 and the sleeper 200 should be changed or removed, and in particular, in order not to interfere with the operation of the train, it is necessary to check the train intervals in advance. It is important to work safely.

3 and 3a, the gap between the rail 100 and the rail 100 or between the sleeper 200 and the sleeper 200 or between the rail 100 and the sleeper 200 may be used for the above operation. When the train is moving in a narrow place, the drilling work should be done several times with the excavator. At first, when the drill is narrowly drilled, the construction is carried out in a wide digging pattern, and the concrete structure 10 has a certain diameter. When it is hardened and hardened to have a shear stress and a compressive stress which can simultaneously serve as a support for the temporary passage means 20a and a role as a retainer, construction of the next stage can be performed. In addition, since the construction is made without deformation and removal of the rails 100 and sleepers 200, if the work is accurately identified and the trains are spaced apart, there is no risk of an accident and it does not interfere with the operation of the trains. Of course, there is no need to provide a construction that has the effect of shortening the air and thereby reducing the construction cost.

In addition, the temporary passage means (20a) of Figure 3a balances the concrete structure 10 and at least any one or both of the more if the height of the upper end of the second shift (30a) opposite to each other by installing a pedestal means (21) Keep it.

The pedestal means 21 uses a hydraulic jack using a hydraulic lamp and several types of beams.

In addition, the temporary passage means 20a is to be installed by removing the upper end portion (A) of the second shift (30a) or to be installed without removal.

In addition, it will also have the effect of reducing the construction cost by utilizing the second shift (30a) that is the existing shift as a pier.

Second Embodiment

4 and 4A are diagrams illustrating a second embodiment, and as shown in FIG. 4, it is the same as the process up to the trench of the first embodiment.

In the second embodiment, the extension bridge 50 is installed in the open space. Referring to FIG. 4A, the extension bridge 50 is connected to the second shift 30a positioned on the side and connected by a plurality of reinforcement 31. It can be seen that. The extension bridge 50 is a ramen bridge in the form of a box.

Therefore, the extension bridge 50 and the second shift 30a are connected to each side by a plurality of reinforcing bars 31 and are constructed with a stable box from the ground, so as to withstand the dynamic loads from a train that is gradually enlarged. It has the effect of long lasting function of reinforcement and bridge.

Third Embodiment

5 and 5a are the same as the second embodiment except that the extension bridge 50 is provided with a lower ramen bridge without a lower surface instead of a box-shaped ramen bridge in the process of the second embodiment.

This shows that the contractor can install any type of ramen bridge as needed, taking into account the topography and ground conditions of the bridge.

In addition, if the ground is poor, the foundation concrete 61 may be poured first and installed thereon.

On the other hand, when installing the temporary bridge (temporary bridge means 20a), the movement of the vehicle is slow and the span of less than 30 ~ 50m in the place of the bridge is carried directly to the pre-mounted bridge to the trailer, the vehicle bridge for a while to control the existing bridge It can be installed in a short time by the overpass type.

However, even if the vehicle is frequently moved, it can be installed in a short time in an overpass format in a short time, but if it is in the absence of a detour, it can cause serious traffic jams. The construction method in the road bridge of the present invention can also proceed without installing a bypass road while the vehicle is moving or under construction, by installing a bridge and inducing traffic through a temporary bridge where a vehicle is installed. It is.

Therefore, the construction method does not require a bypass road and can maintain the road linearity, and can significantly reduce the traffic jam compared to the conventional construction method, thereby minimizing the occurrence of civil complaints, and shortening the air and reducing the construction cost. have.

Fourth Embodiment

6 to 6b is a view showing a fourth embodiment of the present invention, the extension method of the bridge using the concrete structure of the fourth embodiment of the present invention is as follows.

Bridge expansion method according to a fourth embodiment of the present invention, the step of installing the concrete structure 10 in a predetermined position to be extended from the second shift (30a) of one side; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10) and reinforcing the second shift (30a); Placing concrete and tosa filling with backfill 40 between the new shift 30b and the concrete structure 10; Placing and curing the foundation concrete 61 on the bottom between the second shift (30a) and the new shift (30b) and installs the first support structure 60 thereon, the top of the first support structure 60 is a formwork for manufacturing the top plate Curing the top plate consisting of and poured concrete therein; Clearing up and restoring means of transportation.

In the fourth embodiment, when the second shift 20a is suitable for supporting the loads of the girder 20 and the temporary passage means 20a together with the new shift 30b and it is necessary to reinforce the road at the top of the extension part It is the construction method to use.

It is the same as the process up to the excavation of the above-described embodiments, the foundation concrete 61 is poured between the second shift 30a and the new shift 30b, and the first support structure 60 is installed thereon to install the upper end thereof. The formwork for making the top plate is made on the floor and concrete is poured into it to manufacture the top plate. Until the top plate is cured, the vehicle passes through the temporary passage means 20a, and when the top plate is completed, restores the passage means and removes the temporary passage means 20a.

The new slab 70 uses what is disclosed in Patent Registration No. 214387 registered and filed by the same applicant.

Fifth Embodiment

7 to 7b is a view showing a fifth embodiment of the present invention, the extension method of the bridge using the concrete structure of the fifth embodiment of the present invention, concrete at a predetermined position to be extended from the second shift 30a on one side Installing the structure 10; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10); Placing concrete and tosa filling with backfill 40 between the new shift 30b and the concrete structure 10; The concrete foundation 61 is erected on each floor spaced at a predetermined interval in both directions of the second shift 30a, and the first support structure 60 for supporting the girder 20 and the temporary traffic means 20a is installed thereon. To demolish the second shift (30a); The prefabricated bracket 80 is installed on the opposite side of the first shift 30 corresponding to the new shift 30b and between the prefabricated bracket 80 and the girder 20 and the temporary passage means 20a. Installing the new teaching device 300a through; Placing and curing the foundation concrete (61) at a predetermined position parallel to the new shift (30b) and the first shift (30) and installing a second support structure (62) thereon; The new slab device 300a is removed from the girder 20, the bridge device 300, and the temporary passage means 20a and the new slab 70 mounted on the upper portion of the second support structure 62 through the moving trolley rail 63. Mounting to); Clearing up and restoring means of transportation.

The fifth embodiment is a construction method to be used when the bridge is extended, and the old age of the second shift 30a is severe and may collapse in a few months as long as several months.

As shown in FIG. 7A, the first supporting structure serves as a base of the girder 20 and the temporary traffic means 20a, standing on the concrete foundation 61 on each floor spaced at regular intervals in both directions of the second shift 30a. A 60 is installed to dismantle the second shift 30a supporting the girder 20 and the temporary passage means 20a.

Here, the first support structure 60 is made of a temporary vent supporting the base concrete 61 at the bottom and the support (girder, temporary girder, etc.) of the upper end, in addition to the temporary vent, support for copper bar, straw support Can also be replaced with

When the second shift 30a is dismantled, the area as much as the second shift 30a occupies is enlarged. That is, the passage surface is widened to smoothly flow the flow of immense flow resulting from the heavy rain and typhoon. While there is an advantage of increasing the effect of not crossing the dike, the long span distance is required to require the reinforcement of the top plate.

Therefore, the prefabricated bracket 80 is installed at a predetermined position of the first shift and the new shift 30b of FIG. 7B, and the new chair apparatus 300a is provided between the girder 20 and the temporary passage means 20a. Is installed there is a step of lowering the new slab 70 mounted on the top of the second support structure (62) to the new teaching device (300a).

At this time, the prefabricated bracket (Bracket) (80) is used in the patent application No. 214386, No. 214387 registered and registered in advance by the same applicant, the new slab 70, although not shown in the upper portion The new girder is constructed in advance, the second support structure 62 is made of a temporary vent with a base concrete 61 is supported on the lower end and the moving trolley rail (63).

This preliminary work and the method of mounting the new slab 70 using the second support structure 62 not only has an effect of shortening the air, but also when it is difficult to mount the crane of the new slab 70 when the tramline is installed around. There is an advantage that the top plate can be easily installed without space-time interference.

On the other hand, in the above-described embodiments, the concrete structure 10 is injected into a concrete pile by injecting concrete at a predetermined position of the expansion portion and injected and sprayed concrete at irregular and / or regular intervals on the lower soil surface of the expansion portion It is formed of a structure that is integrated with the soil.

The technology of the present invention as described above is not limited to railway bridges and road bridges in the accompanying drawings, and may be used in various types, for example, road bridges, footbridges, aqueduct bridges, and the like. It is advantageous for the extension work of the bypass road and the special ship to be used for the extension work of the bridge or the bridge located in the area where the buildings or houses are concentrated around the bridge.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the present invention may be variously modified and practiced by those skilled in the art, and such modified embodiments may be modified from the technical spirit or outlook of the present invention. It should not be understood individually, but such modified embodiments should fall within the appended claims of the present invention.

Therefore, according to the present invention, it is possible to extend the lower space of the bridge installed in the river to minimize the damage of bridges, loss of the bridge, etc. due to the increase of river flow due to urban development and typhoons and torrential torrential rain, etc. It can be extended without interrupting the passage of pedestrians, vehicles and trains, especially trains, even during the expansion of bridges, and bypassing vehicles, pedestrians or trains to expand the bridges. By not installing the bypass road and special ship, it is effective to greatly reduce and shorten the enormous construction cost and long-term construction period, and the rough reduction level of the previous construction cost is about 50m bridge than the conventional expansion method. Savings of 70% to 80%

In addition, in the case of the extension of bridges located near the bridges or tunnels in buildings or houses around the bridges in poor environments due to frequent traffic jams, there was a practical problem that the bypass method could not be installed. It can be achieved by modifying the technology of the invention, can be constructed without affecting the operation of vehicles and pedestrians, especially trains can reduce the occurrence of civil complaints and minimize the traffic jam during construction.

Claims (13)

In the conventional bridge extension construction method for additional securement of the lower space of the bridge and opening and expanding the roadway, Installing the concrete structure 10 at a predetermined position to extend from the second shift 30a of one side; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10); Between the new shift (30b) and the concrete structure (10) with a backfill 40, the concrete pour, tosa filling and the temporary means of transportation (20a) using the concrete structure, characterized in that consisting of the step of restoring and recovering the means of passage Bridge expansion method. The method of claim 1, Extension of the bridge using the concrete structure, characterized in that the side of the concrete structure 10 made of a ramen bridge in contact with the side of the second shift (30a) instead of the new shift (30b) connected by a plurality of reinforcement (31) Method. The method of claim 1, The expansion method of the bridge using the concrete structure, characterized in that the side of the concrete structure 10 made of a box connected to the side of the second shift (30a) instead of the new shift (30b) and connected by a plurality of reinforcement (31) . In the conventional bridge extension construction method for additional securement of the lower space of the bridge and opening and expanding the roadway, Installing the concrete structure 10 at a predetermined position to be extended from the second shift 30a of one side; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10) and reinforcing the second shift (30a); Placing concrete and tosa filling with backfill 40 between the new shift 30b and the concrete structure 10; Placing and curing the foundation concrete 61 on the bottom between the second shift (30a) and the new shift (30b) and installs the first support structure 60 thereon, the top of the first support structure 60 is a formwork for manufacturing the top plate Curing the top plate consisting of and poured concrete therein; Extension method of the bridge using a concrete structure, characterized in that consisting of steps to clean up and restore the means of transportation. In the conventional bridge extension construction method for additional securement of the lower space of the bridge and opening and expanding the roadway, Installing the concrete structure 10 at a predetermined position to be extended from the second shift 30a of one side; Installing a temporary passage means (20a) on an upper end of the concrete structure (10) and the second shift (30a); Digging step of digging soil between the second shift (30a) and the concrete structure (10); Installing a new shift (30b) in the side of the concrete structure (10); Placing concrete and tosa filling with backfill 40 between the new shift 30b and the concrete structure 10; The concrete foundation 61 is erected on each floor spaced at a predetermined interval in both directions of the second shift 30a, and the first support structure 60 for supporting the girder 20 and the temporary traffic means 20a is installed thereon. To demolish the second shift (30a); The prefabricated brackets 80 are installed at the upper ends of the first shifts 30 corresponding to the new shifts 30b, respectively, and the prefabricated brackets 80 and the girder 20 and the temporary passage means 20a. Interposing the new teaching device 300a therebetween; Placing and curing the foundation concrete (61) at a predetermined position parallel to the new shift (30b) and the first shift (30) and installing a second support structure (62) thereon; The new slab device 300a is removed from the girder 20, the bridge device 300, and the temporary passage means 20a and the new slab 70 mounted on the upper portion of the second support structure 62 through the moving trolley rail 63. Mounting to); Extension method of the bridge using a concrete structure, characterized in that consisting of steps to clean up and restore the means of transportation. The method of claim 5, The lower portion of the second support structure (62) is supported by the foundation concrete (61) and the upper end of the bridge extension method using a concrete structure, characterized in that made of a temporary vent provided with a moving trolley rail (63). The method according to any one of claims 1, 4 and 5, Installation of the concrete structure 10 is an extension method of the bridge using the concrete structure, characterized in that the construction using the gap without changing or removing the rails 100 and sleepers 200. The method according to any one of claims 1, 4 and 5, Installation of the temporary passage means (20a) is an extension method of the bridge using a concrete structure, characterized in that made by further installing a pedestal means 21 on the upper end of the concrete structure (10). The method of claim 8, The pedestal means 21 is an extension method of a bridge using a concrete structure, characterized in that consisting of a hydraulic jack for supporting the girder 20 and the temporary passage means (20a). The method of claim 8, The pedestal means 21 is a method for expanding a bridge using a concrete structure, characterized in that consisting of a beam (Beam) for supporting the girder 20 and the temporary passage means (20a). The method according to claim 4, 5, The lower portion of the first support structure (60) is an extension method of the bridge using a concrete structure, characterized in that the base concrete (61) is supported by a temporary vent supporting the support of the top. The method according to any one of claims 1, 4 and 5, The concrete structure 10 is an extension of a bridge using a concrete structure, characterized in that the concrete is injected into a vertical pile by a predetermined depth at a position of a predetermined length and width from the second shift (30a) of one side Method. The method according to any one of claims 1, 4 and 5, The concrete structure 10 is characterized in that formed into a structure that is integrated with the soil by injecting and spraying concrete at irregular and / or regular intervals on the lower soil surface of the expansion to extend from the second shift (30a) of one side Extension method of bridge using concrete structure.

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