KR20100036765A - A arch bridge structure according to dividing the thermal fixed point of structure - Google Patents

Abstract

PURPOSE: A deck arch bridge structure of a long span which divides a thermal fixed point is provided to improve the construction performance and quality of the structure by resisting temperature expansion. CONSTITUTION: A deck arch bridge structure of a long span which divides a thermal fixed point comprises arch ribs(20), long columns(31), expansion joint columns(50), short columns(61), fixed point bridge decks(30), and expansion joint bridge decks(60). The arch ribs are formed between multiple piers(10). The long columns are vertically installed in both ends of each arch rib. The expansion joint columns are vertically installed in both ends of each arch rib. The short columns are vertically installed in the center of each arch rib. The fixed point bridge decks are horizontally installed in the top end of the long columns. The expansion joint columns are horizontally installed in the top end of the short columns.

Description

Arch bridge structure according to dividing the thermal fixed point of structure

The present invention relates to a long span cross arch bridge structure in which a temperature fixed point is divided, and more particularly, to provide a bridge type for excluding a rail expansion joint (REJ) from a long span bridge. It provides a composite structure type with continuous ramen structure that divides the temperature fixed point on the arch structure with long span, so that the temperature of the bridge deck temperature can be kept below a certain value. The arched bulkheads that connect the piers, the decks and the piers are installed to resist temperature stretching, which greatly improves the construction and quality of the products so that consumers can plant a good image.

As it is well known, long rail safety due to the interaction between the long rail and the bridge has a very significant influence on the bridge type and span configuration. Therefore, it is important to plan and design the optimal bridge through the long rail safety review.

As described above, the bridge and the rail are caused to interact with each other by the load because they are connected to the superstructure through the railroad pole of the railway bridge. In particular, when the temperature load is applied, compression or elongation occurs on the bridge and rail. The rail is supported by the track components such as fasteners, sleepers, and drawing. Of course, the load of the bridge top plate is transferred to the rail through the rail to generate the axial force on the long rail, especially at the bridge joints that allow the bridge to expand and contract due to temperature, very large long rail axial force is generated. On the bridge, the axial force is generated by the starting or braking load of the train, and the change of the end angle and the axial force is also caused by the change of the top plate bending caused by the vertical load.

When the axial force of the long rail is excessively accumulated by the above load, buckling of the track, breaking of the rail, excessive stress on the bridge may occur, and serious damage to the railway structure may occur. Gravel is loosened and bad tracks occur, which increases the cost of maintenance of long rail tracks in tracks and bridge structures and risks for train driving due to structural safety.

Unless the long rail suitability is confirmed by a suitable detailed analysis on railway bridges, the following limits are set for the maximum distance between fixed points.

First, limit the distance between fixed points of long rail tracks to 80m in concrete and steel composite bridges without rail expansion joints (R.E.J).

Second, for steel bridges without R.E.J, the distance between fixed points of the long rail track is limited to 60m.

Third, the distance between fixed points of discontinuous tracks with one R.E.J on the bridge is limited to 400m.

When installed on the long rail bridge, the additional stress and displacement are prescribed.

On the other hand, the technology that does not apply the rail expansion joint device as described above has been applied to the prior art.

That is, there is a patent application No. 2001-0018046 (Publication No. 2002-0078543) (name: Arch Ramen Bridge), which will be described in more detail as follows.

The conventional technical configuration described above is constructed as shown in Figs. 1 and 2, wherein vertical walls 2 are respectively erected on the bases of both sides, and reinforced concrete floor plates 1 are intersected between the vertical walls 2. It is integral with the vertical wall (2) and connected in a steel form to form a bridge of the ramen type, and in the lower part of the bottom plate (1) between the base to form an arch shape bent toward the bottom of the bottom plate (1) Reinforced concrete arch ribs 3 having a predetermined thickness are provided, and the arch ribs 3 are connected by the connecting portion 4 so that the arch ribs 3 support the bottom plate 1 at a predetermined length portion of the center of the bridge. And the bottom surface of the bottom plate 1 are integrally combined to form a structure in which the arch bridge and the ramen bridge are combined such that the arch rib 3 supports the bottom plate 1.

The conventional technology configured as described above is composed of a combination of arch bridges and ramen bridges to provide a new type of arch ramen bridge that can exhibit all the advantages of the arch bridge and the ramen bridge.

However, the above-described prior art has exposed many problems as follows.

That is, the conventional technique simply does not divide the temperature fixed point because the bridge is formed in the shape of an arch, and in the case of a long rail having a span of more than a limited distance (60-80 m) between the fixed points of the structure, as a result, the axial stability cannot be secured. It was pointed out as a big problem.

In addition, the prior art has a problem that the constant maintenance is required because it does not divide the temperature fixed point.

In addition, the prior art has a large problem that there is no arch-shaped partition wall having a fixed end distance to ensure long rail stability on the long span arch bridge.

The present invention has been made in order to solve the problems of the prior art as described above, the first object is provided with arch ribs and long column, expansion joint column and short column, fixed point bridge deck and expansion joint bridge deck The second objective is to provide a bridge type that excludes the Rail Expansion Joint (REJ) from the long span bridge by the above technical configuration. Therefore, the third purpose is to provide a site condition requiring long span bridge planning. In order to secure the long rail axial stability, the fourth objective is to provide a composite structure type with continuous ramen structure that divides the temperature fixed point on the arch structure with the long span. The fifth objective is also to apply piers, piers and piers in the form of a continuous ramen. The arc-shaped partition wall connecting arcs is installed to resist temperature stretching. The sixth objective is the long-span furnace that divides the temperature fixed point, which greatly improves the construction and quality of the product, so that consumers can plant a good image. Provide an arch bridge structure.

In order to achieve the above object, the present invention is a ramen (rahmen) bridge made of a rigid connection between the column and the beam (stiffness), arch ribs are respectively installed between the plurality of bridges and piers; A long pole installed vertically on an upper portion of each of the arch ribs on which the piers are installed; Stretch joint pillars installed vertically on both upper and left ends of each of the arch ribs; A short column installed vertically in the center of the upper end of each arch rib; A fixed point bridge top plate installed horizontally on the upper end of the organ; And an expansion joint bridge plate installed horizontally on the upper end of the short-term column. The long bridge spans the bridge with the temperature fixed point.

As described in detail above, the present invention provides an arch rib and a long pillar, a expansion joint and a short column, a fixed point bridge deck, and a expansion joint bridge deck to provide an arch bridge structure with a long span divided by a temperature fixed point. It is.

In addition, the present invention provides a bridge type that excludes the rail expansion joint (R.E.J) in the long span bridge by the above technical configuration.

In addition, the present invention is to ensure the long-term rail axial stability in the field conditions requiring long span bridge planning.

In addition, the present invention is to provide a composite structure type that is applied to the continuous ramen structure that divides the temperature fixed point, especially on the arch structure having a long span to maintain the temperature of the bridge deck temperature stretch below a certain value.

In addition, the present invention is to apply the upper plate in a continuous ramen type, and to install the arch partition wall interconnecting the piers, the top plate and the piers to resist temperature stretching.

The present invention is a very useful invention that can significantly improve the workability and quality of the product due to the above-described effect so that consumers can plant a good image.

Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention for achieving this effect are as follows.

The long span bridge arch structure having the temperature fixed point applied to the present invention is configured as shown in FIGS. 3 to 7.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, and may be changed according to the intention or custom of the producer, and the definitions thereof should be made based on the contents throughout the present specification.

First, the present invention, in the ramen (rahmen) bridge is formed by continuously joining the pillar and the beam rigidly, as shown in Figure 4 between the plurality of bridges 10 and 10, respectively, arch ribs 20 Is provided with a connection.

At this time, the arch rib 20 is formed to protrude upward curved between the pier 10 and the pier (10).

In addition, the present invention is a vertical pole 31 is installed vertically on the upper portion of the arch rib 20 is installed each of the piers 10.

And in the present invention, the vertical expansion column 50 is installed at both ends of the upper left and right sides of each of the arch ribs 20.

In addition, in the center of the upper end of each of the arch ribs 20 applied to the present invention, a short column 61 is installed vertically.

In addition, the present invention is a fixed point bridge top plate 30 is installed horizontally on the upper end of the long-term pole 31.

Finally, the present invention is provided with a horizontal joint bridge plate 60 is installed horizontally on the upper end of the short column 61 to provide a long span bridge arch structure divided by a temperature fixed point.

Among the techniques configured as described above, the present invention is characterized in that the plurality of fixed point bridge deck 30 and the expansion joint bridge deck 60 are separated from each other by the bridge expansion joint 70 without being connected to each other. .

And the bridge expansion joint 70 applied to the present invention is characterized in that it is located in the middle of the temperature fixing point (A) between the fixed point bridge top plate 30 and the expansion joint bridge top plate (60).

In addition, between the long column 31 and fixed point bridge top plate 30 and the long column 31 applied to the present invention as shown in Figs. Connection is provided.

In addition, the present invention can be configured as another embodiment as shown in Figure 5, the resistance between the stretch and horizontal load even between the short column 61 and the expansion joint bridge plate 60 and the short column 61 The partition 40a is provided to be connected.

In addition, the partition walls 40 and 40a applied to the present invention are preferably formed in an arc shape.

On the other hand, the present invention may be variously modified and may take various forms in applying the above configuration.

And it is to be understood that the invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood that.

Referring to the operation and effect of the arch bridge structure in the long span divided the temperature fixing point of the present invention configured as described above are as follows.

First, the present invention satisfies the condition that the expansion joint of the structure should be eliminated in the installation section of the branch on the bridge where the long rail is applied to the railway and high-speed railway bridge, and secures the necessary separation distance between the branch and the bridge expansion joint on both sides. A bridge type is provided to control the future rail force below an allowable value while satisfying the requirement to do so.

In the present invention, a bridge of a sufficient length having a span beyond the fixed point distance limit due to the long rail axial force limit, but without the long rail expansion joint (REJ) to install the long rail on the bridge to maintain a safe track It will provide a bridge structure to allow the pole rail to keep the axial force below the allowable value.

First, the present invention connects and installs the arch ribs 20 between the plurality of piers 10 and the piers 10, respectively.

Thereafter, the long column 31 is installed vertically on the upper part of the arch rib 20 in which the respective piers 10 are installed.

Subsequently, the expansion joint 50 is installed vertically at both ends of the upper left and right sides of the respective arch ribs 20.

In addition, a short column 61 is installed vertically at the center of the upper end of each of the arch ribs 20.

In addition, the fixed point bridge top plate 30 is installed horizontally on the upper end of the long pole 31.

Finally, the present invention is installed on the upper end of the short column 61 horizontal expansion bridge bridge plate 60 to install the arch bridge structure over the long span partitioning the temperature fixed point.

Obviously, the above steps may be changed in order by on-site assessment.

In the above state, when the atmospheric temperature rises, conventionally, compressive stress occurs over the entire rail extension, and in the expansion joint of the bridge, the compressive stress becomes higher as the gap between the bridge top plates becomes narrower, but the present invention provides an arch having a long span. The bridge expansion joint 70 dividing the temperature fixing point A on the structure keeps the temperature of the bridge top plate stretched below a certain value to ensure the stability of the rail, and also eliminates the maintenance target. It will provide a significant reduction in management costs.

In more detail, when the air temperature rises, the arch rib 20 moves up and down by compression and contraction as shown in FIG. 4. At this time, the longitudinal ribs installed on the left and right sides of the expansion joint 50 31) and the short run (61) is stretched according to the temperature change by the length.

That is, when the air temperature rises, the short-runner 61 and the arch ribs 20 are about to increase, and compressive stress is generated. When the air temperature decreases, the short-runners 61 and the arch ribs 20 are reduced to reduce the tensile stress. This will occur.

In the above state, when the air temperature rises, the long-term pole 31 and the arch rib 20 try to increase, and a compressive stress is generated, and when the air temperature decreases, the long-term pole 31 and the arch rib 20 are reduced. Tensile stress is generated, wherein the short run (61), long run (31) and expansion joint column 50 is the tension and the length corresponding to the length of the arch rib (20) during the rise and fall, respectively, Compression is performed, and in this process, the temperature stretching amount of the bridge deck is kept below a certain value so that the rail does not affect the vertical direction.

As a result, the present invention provides an easy effect to secure the main sea stability because the rail stretch of the railway bridge is excluded by maintaining the above-mentioned temperature stretching amount below a certain value.

In addition, in the present invention, the partition wall 40 is connected between the long pole 31 and the fixed point bridge deck 30 and the long pole 31, and the short pole 61 and the expansion joint bridge deck 60 And between the short column 61 is to configure the partition wall (40a) in an arcuate configuration, which is to install the arcuate partition wall interconnecting the piers and the top plate and the piers to resist temperature stretching.

Therefore, the present invention is to resist the axial load in the axial direction by applying the composite arch bridge type applying the continuous ramen having the arch-shaped bulkheads 40, 40a having a fixed end-to-end distance to ensure the long rail stability on the long span arch It will provide an effect that can be.

The technical idea of the long span vertical arch bridge structure in which the temperature fixed point of the present invention is divided is actually capable of repeating the same result. There is enough.

1 is a block diagram of a conventional arch ramen bridge.

2 is a perspective view of a conventional arch ramen bridge.

Figure 3 is a long span arch arch bridge divided by a temperature fixed point applied to the present invention

        Joe's top view.

Figure 4 is a long span arch arch bridge divided by a temperature fixed point applied to the present invention

        Joe's front view.

5 is a long span arch arch bridge divided by a temperature fixed point applied to the present invention

        Front view of another embodiment of a bath.

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a cross-sectional view taken along the line B-B of FIG.

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

10: pier 20: arch rib

30: fixed point bridge deck 40: bulkhead

50: expansion joint pillar 60: expansion joint bridge top

70: bridge expansion joint A: temperature fixing point

Claims (7)

In the rahmen bridge, in which the columns and beams are joined together rigidly, An arch rib 20 connected between a plurality of piers and piers, respectively; An organ pole 31 installed vertically on an upper portion of the arch rib on which each pier is installed; Stretch joint pillars 50 which are vertically installed at the upper left and right sides of each of the arch ribs; A short column 61 installed vertically at the center of the upper end of each arch rib; A fixed point bridge top plate 30 installed horizontally on an upper end of the long term column; And Longitudinal span arch bridge structure divided into a temperature fixed point characterized in that it comprises ;; expansion joint bridge top plate (60) horizontally installed on the upper end of the short column. The method according to claim 1, The arch rib 20 is a long bridge span arch bridge structure divided by a temperature fixed point, characterized in that formed to protrude upward curved between the bridge piers and the piers. The method according to claim 1, The plurality of fixed point bridge decks and expansion joints bridge decks are not connected to each other, the bridge between the long span span arched structure, characterized in that configured to be separated by the bridge expansion joint (70). The method according to claim 3, The bridge expansion joint 70 is a long span arch bridge structure divided by the temperature fixed point, characterized in that located in the middle of the temperature fixed point (A) between the fixed point bridge top plate and the expansion joint bridge top plate. The method according to claim 1, The long bridge between the long pole and the fixed point bridge plate and the long pole and the temperature barrier and the horizontal load to partition the temperature fixed point characterized in that the connection is provided. The method according to claim 1, Between the short column and the expansion joint bridge plate and the short column, the partition wall (40a) to resist temperature stretching and horizontal load; is connected to the long span span arch bridge structure characterized in that the temperature is fixed. The method according to claim 5 or 6, The partition wall (40, 40a) is an arch bridge structure over the long span partitioning the temperature fixed point, characterized in that made of an arch.

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