KR101886345B1 - CONSTRUCTION METHOD OF HYBRID RAILWAY BRIDGE USING PRESTRESSED CONCRETE FILLED TUBE and TRANSVERSE PRESTRESSED CONCRETE BLOCK - Google Patents

Abstract

The present invention relates to a hybrid steel truss railway bridges, and more particularly, to a steel truss bridge girder bridging concrete truss bridge girder brass truss bridge girder brass truss bridge girder brass truss bridge girder brass girder brass girder bridge bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges In order to secure the durability of the integrated bottom plate joint at the upper part of the branch block, and to prevent the occurrence of cracks, It is connected to the loop joint, and it is resistant to the momentum occurring at the continuous point part. It introduces the tension force in the longitudinal direction through the filled steel pipe intrusion tension material to mitigate the concentration of the concrete stress when the tension force is introduced and connects with the unit filled steel pipe truss girder The integrated steel pipe intrusion tension material It relates to a construction method of sequencing filled steel tube hybrid cheoldogyo with cast concrete block.

Description

TECHNICAL FIELD [0001] The present invention relates to a method of continuously constructing a hybrid steel railway bridge using a steel pipe filled steel pipe and a precast concrete block,

The present invention relates to a hybrid steel truss railway bridges, and more particularly, to a steel truss bridge girder bridging concrete truss bridge girder brass truss bridge girder brass truss bridge girder brass truss bridge girder brass girder brass girder bridge bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges bridges In order to secure the durability of the integrated bottom plate joint at the upper part of the branch block, and to prevent the occurrence of cracks, It is connected to the loop joint, and it is resistant to the momentum occurring at the continuous point part. It introduces the tension force in the longitudinal direction through the filled steel pipe intrusion tension material to mitigate the concentration of the concrete stress when the tension force is introduced and connects with the unit filled steel pipe truss girder The integrated steel pipe intrusion tension material It relates to a construction method of sequencing filled steel tube hybrid cheoldogyo with cast concrete block.

Generally, a railroad bridge is composed of a pier, a girder installed on the upper part of the pier, a bridge support installed between the bridge and the girder to support the girder, a railroad tie installed on the upper part of the girder, .

Currently, most of the domestic railway bridges are designed to be suitable for the 25 ~ 45m span of Chongqing, and most of them are limited to improve the PSC or steel composite girder. It is necessary to develop a bridge type with structural efficiency and economical suitability. It is expected that there will be an increase in the replacement market of old railway bridges in the future where the durability life will come. It is necessary to secure technology in consideration of

For the long-span bridges with a length of 50 m or more at the time of construction of a new route, there is no special alternative to the current composite girder type. Therefore, there is a demand for new type bridges having structural / economic efficiency. For example, Japanese Patent Publication No. 10-1184654 A method for constructing an integral type of concrete block-integrated focal point is disclosed.

In the method of constructing a concrete pipe-embedded concrete block integral type branch portion, a concrete apparatus is installed on the upper surface of a pier or an alternate, and a concrete block is placed on the upper surface of the concrete apparatus or a pre- A concrete block installing step of integrally forming the connecting members at the upper and lower ends of the block by embedding the connecting members in the throttling direction; A truss girder is installed in the concrete block in the direction of the throttle axis and the upper and lower currents of the unit filled steel pipe truss girder are fixed to the connecting member fair; And a bottom plate forming step of forming a bottom plate on the upper surface of the unit-filled steel pipe truss girder and on the upper surface of the concrete block, wherein upper and lower ends of the girder are embedded in a concrete block, It is possible to control the compressive force and the tensile force efficiently and to integrate and fuse the fulcrums, and to control the behaviors such as bending, twisting, shrinkage and expansion which correspond to the tensile force and compressive force generated at the fulcrum portion.

However, such a conventional method of installing a steel pipe-embedded concrete block integral-type fulcrum has a problem that the construction period is increased because the concrete block is installed on-site and integrated with the unit-packed steel pipe truss girder and the bottom plate is laid again.

In addition, in the conventional method of installing a steel pipe-embedded concrete block integral type branch point, when a concrete bridge block is applied to a double-track railway bridge, the volume of the concrete block becomes larger and the size of the bridge is increased.

Korean Patent Registration No. 10-1184654

In order to solve the above-mentioned problems, the present invention provides a method of manufacturing a truss girder, comprising the steps of: dividing a concrete branch block of a truss continuous point portion connected to a unit-filled steel pipe truss girder into longitudinal segments, A plurality of reinforced concrete pipe blocks are formed on the bridge pier in a state where they are moved to a place where they are manufactured and then installed in a concrete pier block to introduce a tension force in the longitudinal direction and the transverse direction, The present invention aims to provide a method for continuous construction of a filled steel pipe hybrid railway bridge using intrusion tensions and precast concrete blocks.

According to an aspect of the present invention,

The first connecting members are integrally embedded in the upper end portions of the longitudinally opposite side surfaces in an alternating axial direction so that both ends of the first connecting members are exposed, And a plurality of transverse through holes are formed at the lower and lower ends of the side surface so as not to interfere with the first and second connecting members and the shear keys. A first precast segment formed integrally on an upper surface of the bottom plate to block out one side of the bottom plate to expose the loop reinforcement, and a second precast segment formed to have the same size as the first precast segment, A precast segment for fabricating a second precast segment having a shear-key groove at a location where the shear- A manufacturing process; A concrete branch block manufacturing step of raising the first precast segment and the second precast segment to the upper part of the pier and installing the concrete point block at the truss consecutive point by mutual interview using the shear key and the shear key groove; A transverse tensile force is introduced into each of the transverse through holes to introduce a transverse tensile force and a longitudinal tension force is introduced into the first connecting member through a filled steel pipe intrusion tension member, A tensional force introduction process for filling the shrinkage mortar or concrete; The unit filled steel pipe truss girder made up of the vertical stiffener and the stiffener is disposed symmetrically with respect to each other in the longitudinal direction about the first and second precast segments, And connecting the upper and lower currents to the connecting members of the first and second precast segments, respectively; And a pouring step of pouring non-shrinkage mortar or concrete into the inside and the block-out portion of the first and second connecting members and the block-out portion of the first and second precast segments.

The continuous casting method of the filled steel pipe hybrid railway bridge using the filled steel pipe intrusion prestressing material and the precast concrete block has the same length as the first precast segment and the same width or different width, , A key precast segment having a shear key on one side and a shear key groove on the other side is manufactured to form a key precast segment in which the loop reinforcement is provided between the first and second precast segments And further installs one or more of the key precast segments.

Also here, the loop reinforcement is installed at an intersecting position so that overlapping is achieved.

Here, the first connection member may include a first steel pipe formed in a hollow shape so as to fill the non-shrinkage mortar or concrete therein; A plurality of first charging holes formed at both ends of the steel pipe to smoothly fill the shrinkage mortar or concrete in the first steel pipe; A plurality of first anchors coupled to an outer surface of the first steel pipe so as to be integrated with the first and second precast segments or the key precast segment; A first flange formed at the other end of the first steel pipe so that an upper portion of the unit-filled steel pipe truss girder is bolted; A fixing plate that is fixed to the fixing flange for fixing the filled steel pipe intrusion tension member to the first flange; And a first reinforcing plate provided between the outer surface of the other end of the first steel pipe and the back surface of the first flange.

Here, the second connecting member may include a second steel pipe formed in a hollow shape so as to fill the non-shrinkage mortar or concrete therein; A plurality of second charging holes formed in the steel pipe to smoothly fill the shrinkage mortar or concrete in the second steel pipe; A plurality of second anchors coupled to an outer surface of the second steel pipe so as to be integrated with the first and second precast segments or the key precast segment; A second flange formed at the other end of the second steel pipe so as to be bolted to the lower end of the unit-filled steel pipe truss girder; And a second reinforcing plate provided between the outer surface of the other end of the second steel pipe and the back surface of the second flange.

Here, at least one or more of the first and second linking members are formed on the same line.

Here, the unit-filled steel pipe truss girder is integrally formed with the bottom plate on the upper surface thereof.

According to the continuous construction method of the filled steel pipe hybrid railway bridge using the filled steel pipe intrusion tough material and the precast concrete block of the present invention constructed as described above, when the concrete point block and the filled steel pipe intrusion / It is possible to design more reasonable and efficient bridges by reducing the deflection of the railway bridge, and it is possible to exclude the complicated shape of the continuous point part by the existing truss structure by applying the concrete block, And it is possible to shorten the entire construction period by omitting the separate floor plate construction for the branch portion after the factory is manufactured, the field is transported and assembled, and the construction time of the concrete caused by the introduction of the prestress through the filled steel pipe- Stress concentration is distributed to steel pipe It is possible to introduce efficient and safe tension force on slim section than concrete section.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial side cross-sectional view showing a charged steel pipe truss railway bridge constructed in a method for continuous construction of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention.
2 is a perspective view showing the configuration of first and second precast segments according to the present invention.
3 is a perspective view showing the configuration of first and second precast segments and key precast segments according to the present invention.
4 is a perspective view showing a configuration of a first connecting member according to the present invention.
5 is a perspective view showing a configuration of a second connecting member according to the present invention.
FIG. 6 is a process diagram for explaining a sequential construction method of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention.
FIGS. 7A through 7E are explanatory diagrams for explaining a method of successive construction of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention.

Hereinafter, the construction of a filled steel pipe truss railway bridge constructed in the method of successive construction of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and these may be changed according to the intention of the user, the operator, or the like. Therefore, the definition should be based on the contents throughout this specification.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial side cross-sectional view showing a state of a filled steel pipe truss railway bridge constructed in a method for successive construction of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention. 3 is a perspective view showing the configuration of first and second precast segments and key precast segments according to the present invention. FIG. 4 is a perspective view showing the configuration of a first connection member according to the present invention. And FIG. 5 is a perspective view illustrating a configuration of a second connecting member according to the present invention.

1 to 5, a packed steel pipe truss railroad bridge 100 according to the present invention includes a bridge 110, a coaxial apparatus 120, a concrete branch block 130, a first connecting member 140, A second connecting member 150, a filled steel pipe intrusion tension member 160, a transverse tensional member 170 and a unit filled steel pipe truss girder 180.

First, the piers 110 are fabricated in situ or pre-cast as is conventional. Here, the piers 110 can be alternated and alternately pivoted or pre-cast in a conventional manner, such as piers.

The coordinate system 120 is a conventional coordinate system and corresponds to a point reaction force generated at a fulcrum portion of the girder 140 to be described later and controls the behavior of bending, twisting, contraction, 110) (alternately).

The concrete point block 130 also comprises a first precast segment 131 and a second precaster segment 132.

As shown in FIGS. 2A and 3, the first precast segment 131 is formed into a hollow box shape by reinforcing bars and concrete, and the first connecting member 140 is contracted And a second connecting member 150 is buried in the throttling direction at one end of the first connecting member 140 such that both ends of the first connecting member 140 are exposed and the second connecting member 150 is projected and fixed at the lower end of both longitudinal side surfaces, The bottom plate 135 is integrally formed on the upper surface of the connecting member 140 and the shear key 133 so as to interfere with the connecting member 140 and the shear key 133, One side of the bottom plate 135 is blocked out in the longitudinal direction to expose the loop reinforcement 136 to secure the durability of the part.

The second precast segment 131 is formed to have the same size as the first precast segment 131 as shown in FIG. 2B and FIG. 3, and has the same size as the first precast segment 131, And a shear key groove 137 is provided.

The concrete point block 130 according to the present invention may be divided into a first and a second precast segment 131 and 132 as shown in FIG. 3, depending on the width of the railway bridge (the number of rails, The key precast segment 138 is identical in length to the first precast segment 131 and has the same or different widths and the opposite sides of the bottom plate 135 are joined to the longitudinal The loop reinforcement 136 is exposed in both directions and the shear key 133 is provided on one side and the shear key groove 137 is provided on the other side of the loop reinforcement 136 at the same position as the shear key 133.

4, the first connection member 140 includes a hollow first steel pipe 141 and a non-shrinkage mortar or a non-shrinkage mortar in the interior of the first steel pipe 141 so that the non-shrinkage mortar or concrete is filled therein. A plurality of first charging holes 142 formed at both ends of the first steel pipe 141 so as to smoothly fill the concrete and a plurality of second anchors 142 coupled to the outer surface of the first steel pipe 141 to be integrated with the segments, A first flange 144 formed at both ends of the steel pipe 141 so as to be bolted to the upper end 183 of the unit filled steel pipe truss girder 180, And a reinforcing plate 146 provided between the outer surface of the other end of the steel pipe 141 and the back surface of the first flange 144. The fixing plate 145 has a fixing plate 145 for fixing the intrusion tension member 160.

5, the second connecting member 150 may include a hollow second steel pipe 151 to fill the non-shrinkage mortar or concrete therein, and a non-shrinkage mortar A plurality of second charging holes 152 formed on the outer surface of the forced two-pipe pipe 151 to smoothly fill the concrete, a plurality of second anchors 152 coupled to the outer surface of the second steel pipe 151 to be integrated with the segments, And a second flange 154 formed at both ends of the second steel pipe 151 so that the lower end 181 of the unit-filled steel pipe truss girder 180 is bolted to the other end of the second steel pipe 151, And a second reinforcing plate 155 provided between the back surface of the second flange 154 and the second reinforcing plate 155. At this time, as shown in FIG. 2 and FIG. 3, at least one or more second connection members 150 are formed in the same line as the first connection members 140.

In addition, at least one of the filled steel pipe intrusion tensions 160 penetrates the inside of the first connecting member 140 and is fixed at both ends in a state of being tense in order to resist the resistance of the continuous point portion.

At least one of the transverse tensors 170 is fixed at both ends in a state in which the transverse straps 170 penetrate through the transverse through holes 134.

The unit-filled steel pipe truss girder 180 is composed of a lower end 181 formed in a straight line shape, a phase current 183 provided parallel to the lower end 181, a lower end 181 and an upper end 183 (See FIG. 5). Here, it is preferable that the unit-packed steel pipe truss girder 180 is formed as a pair of two sets, and the two sets may be connected to one another through a horizontal stiffener (not shown). Here, the bottom plate 135 is integrally formed on the upper surface 183 of the unit-filled steel tube truss girder 180.

Hereinafter, a sequential construction method of a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 6 is a process diagram for explaining a method for continuously applying a filled steel pipe hybrid railway bridge using a filled steel pipe intrusion tough material and a precast concrete block according to the present invention, and FIGS. 7a to 7e are cross- FIG. 6 is an explanatory view for explaining a method of continuous construction of a filled steel pipe hybrid railway bridge using a concrete block. FIG.

The present invention will be described on the basis of using the first and second precast segments 131 and 132 and the key precast segment 138. Optionally, the key precast segment 138 may be uninstalled, The key precast segments 138 may be continuously provided.

First, the first and second precast segments 131 and 132 and the key precast segment 138 are preliminarily manufactured at a factory (S10).

7A, a bridge 110 (or an alternate bridge) is installed according to a design, and a quasi-apparatus 120 is installed on an upper surface of each bridge 110, The key precast segment 138 is brought into close contact with the side surface of the first precast segment 131 and the key precast segment 138 is brought into close contact with the side surface of the first precast segment 131, The second precast segment 133 is brought into close contact with the side surface of the concrete precinct block 130 to assemble the concrete precinct block 130 (S20). At this time, the loop reinforcement 136 is jointed.

Subsequently, transverse straining material 170 is passed through each transverse through hole 134 as shown in FIG. 7B to introduce a transverse straining force, and each first connecting member 140 The concrete pipe block 130 is integrated by introducing the longitudinal tensional force into the fixed plate 145 provided in the concrete pipe penetration trench 160 at step S30.

7D, the unit-filled steel pipe truss girder 180 is lifted and installed in the throttle direction block, that is, in the longitudinal direction in the concrete branch block 130, and then the unit-filled steel pipe truss girder 180 180 to the connecting member 140 at step S40.

Once the fixation of the unit-filled steel tube truss girder 180 is completed, a non-shrinkage mortar or a non-shrink mortar is applied to the blockout portions of the first and second precast segments 131 and 132 and the key precast segment 138 as shown in FIG. Concrete is poured (S50). Between the bottom plate 135 formed in the first and second precast segments 131 and 132 and the key precast segment 138 and the bottom plate 135 of the unit packed steel pipe truss girder 180, City) may be installed.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood, however, that the invention is not to be limited to the specific forms thereof, which are to be considered as being limited to the specific embodiments, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. .

110: bridge bridge 120:
130: Concrete point block 131, 132: First and second precast segments
139: key precast segment 140, 150: first and second connecting members
160: filled steel pipe intrusion tension member 170: transverse tension member
180: Unit filled steel tube truss girder

Claims (7)

The first connecting members are integrally embedded in the upper end portions of the longitudinally opposite side surfaces in an alternating axial direction so that both ends of the first connecting members are exposed, And a plurality of transverse through holes are formed at the lower and lower ends of the side surface so as not to interfere with the first and second connecting members and the shear keys. A first precast segment formed integrally on an upper surface of the bottom plate to block out one side of the bottom plate to expose the loop reinforcement, and a second precast segment formed to have the same size as the first precast segment, A second precast segment having a shear-key groove at a location where the shear key is located, and a second pre- The loop reinforcements provided at the intersecting positions are exposed in both directions so that the bottom plates are block-outed in the longitudinal direction so as to overlap each other, and a shear key is provided on one side, A precast segment fabricating step of fabricating key precast segments each having a front end key groove on a side thereof;
The first precast segment and the second precast segment are lifted up to the upper part of the pier and the concrete branch block is assembled at the truss consecutive point portion by mutual interview installation using the shear key and the shear key groove, A concrete point block assembly process for installing one or more of the key precast segments between one or two precast segments;
A transverse tensile force is introduced into each of the transverse through holes to introduce a transverse tensile force and a longitudinal tension force is introduced into the first connecting member through a filled steel pipe intrusion tension member, A tensional force introduction process for filling the shrinkage mortar or concrete;
A unit-filled steel pipe truss girder made up of a vertical stiffener and a stiffener and having a bottom plate integrally formed on the upper surface thereof is installed so as to be symmetrical with respect to the longitudinal direction about the first and second precast segments A post portion joining step of securing an upper current and a lower current of each of the unit-packed steel pipe truss girders to connecting members of the first and second precast segments, respectively; And
And a pouring step of pouring non-shrinkage mortar or concrete into the inside of the first and second connecting members and the block-out part and the block-out part of the first and second precast segments,
Wherein the first connecting member comprises:
A first steel pipe formed in a hollow shape so as to fill the non-shrinkage mortar or concrete therein;
A plurality of first filling holes formed at both ends of the first steel pipe so that the non-shrinkage mortar or concrete is smoothly filled in the first steel pipe;
A plurality of first anchors coupled to an outer surface of the first steel pipe so as to be integrated with the first and second precast segments or the key precast segment;
A first flange formed at the other end of the first steel pipe so that an upper portion of the unit-filled steel pipe truss girder is bolted;
A fixing plate that is fixed to the fixing flange for fixing the filled steel pipe intrusion tension member to the first flange; And
And a first reinforcing plate provided between the outer surface of the other end of the first steel pipe and the back surface of the first flange,
And the second connecting member
A second steel pipe formed in a hollow shape so as to fill the non-shrinkage mortar or concrete therein;
A plurality of second charging holes formed in the second steel pipe to smoothly fill the shrinkage mortar or concrete in the second steel pipe;
A plurality of second anchors coupled to an outer surface of the second steel pipe so as to be integrated with the first and second precast segments or the key precast segment;
A second flange formed at the other end of the second steel pipe so as to be bolted to the lower end of the unit-filled steel pipe truss girder; And
And a second reinforcing plate provided between the outer surface of the other end of the second steel pipe and the back surface of the second flange, and a pre-cast concrete block and a continuous steel pipe bridge construction method using the pre-cast concrete block. delete delete delete delete The method according to claim 1,
Wherein the first and second connecting members
Wherein at least one of the reinforced steel pipe bridges is formed in the same line as the pre-cast concrete block. delete

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