KR20150068785A - Slab gap adjustment apparatus with longitudinal moving and bridge construction method therewith - Google Patents

Abstract

The present invention relates to a precast slab step control apparatus capable of horizontally moving and a bridge construction method using the same simply controlling a step by an amount of camber of a precast slab segment connected in a horizontal direction and capable of horizontally moving the precast slab segment. The precast slab step control apparatus has a horizontal main beam and a horizontal moving vehicle and horizontally moves along a lower flange of the horizontal main beam to come in contact with each other after the step of the precast slab segment hung by an expansion connection rod to be installed in the horizontal moving vehicle is corrected.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a pre-cast slab leveling device capable of moving in a lateral direction, and a bridging method using the same.

The present invention relates to a precast slab leveling device capable of moving in the lateral direction, a bridge construction method using the same, and a bridge construction method using the same. When introducing the prestress by connecting the precast slab segments laterally to each other, the transverse direction, which allows the precast slab segment to be moved laterally, while also simply adjusting the step of the connected precast slab segment The present invention relates to a precast slab leveling device capable of moving, and a bridge construction method using the precast slab leveling device and a bridge construction method using the same.

Typically, slabs of bridges are constructed by installing bridges on the bridges under the bridges, alternating upper part, and slabs on the upper part of the girders that can pass through the car by putting concrete into place.

However, on-site pouring concrete method requires construction work such as formwork installation, concrete pouring, etc., so that the workability is lowered and rapid slab construction becomes difficult.

Recently, slabs are manufactured by precast method and they are connected to each other in a lateral direction.

For example, a precast slab segment 10 is preliminarily manufactured in a factory by using concrete, and then the precast slab segments 10 are connected to each other in the transverse direction by one span on the upper surface of the previously installed girder, thereby completing the slab can do.

1a and 1b, it can be seen that the precast slab segments 10 are installed in the bridge substructure 20 at regular intervals in the transverse and longitudinal directions.

In this case, the precast slab segments 10 are used to press them together in a lateral direction as shown in FIG. 1B. In order to use the precast slab segments 10, a seath 21, which is installed in the lateral direction in advance, I work on the connection.

At this time, the precast slab segment 10 has a difference in height (camber) due to the creep, shrinkage of the concrete, introduction of the prestress, and the like depending on the construction time.

If the difference in the amount of protrusion is small, it can be compensated for by the installation of the concrete in the lateral connection part and the pavement pavement. However, if the difference in the protrusion amount is large, correction of the difference in the protrusion amount, that is, the step difference, should be performed.

Figure 1C shows the means for leveling the precast slab segment 10 of the prior art.

That is, the slab step of the precast slab segment 10 can be corrected by the vertical tensional force by using the bridges, the bridge 52, the support 51 and the step-controlling tension member 60, which are bridge substructures.

However, this method is capable of correcting only the volume of the precast slab segment 10 only, and since the precast slab segment 10 can not be moved laterally after the amount of bulge has been corrected, There is a limit that can not be applied to the bridge construction using the precast slab segment 10 in which the sheath is to be connected and moved.

Accordingly, the present invention can provide a bridge structure capable of adjusting a stepped height of a precast slab segment in a bridge construction using a precast slab segment, and also capable of easily moving in a lateral direction, A cast slab step height adjustment device, and a bridge construction method using the same.

In order to achieve the above object,

First, a precast slab leveling device capable of moving in the lateral direction is provided.

In other words, the precast slab segments are different in the amount of rise in the manufacturing process and the introduction of the prestress at the factory. As a result, the top surface of the precast slab segment is not formed at the same height due to such a protrusion amount, resulting in a step difference.

These steps are not problematic within the manufacturing and construction error range, but if the level difference needs to be corrected, the pre-cast slab segment, which is heavy, should use the step correction jack. That is, the precast slab segments should be integrated by connecting the slabs of the adjacent precast slab segments in a state in which the pre-cast slab segments are corrected by the step-difference correction jack located above.

However, it is necessary to move the precast slab segment laterally while performing the sheath connection. That is, in the precast slab step-adjusting device of the present invention, which can move in the lateral direction, both of the two functions of lateral movement and bulging correction must be provided. To this end,

A transverse main beam is provided,

A pre-cast slab step including a self-propelled drive means capable of moving along a lower flange of the transverse bending main beam extending in the transverse direction and a bogie frame mounted on the upper surface of the precast slab segment, Thereby providing a regulating device.

Second, at this time, the pre-cast slab step adjustment device is provided with a step difference correction jack mounted on a bogie frame so that the tension connecting rod fixed on the precast slab segment can be fixed after upward tension to adjust the vertical slope of the precast slab segment .

That is, a tensile connecting rod having a lower portion fixed to the upper portion of the precast slab segment is fixed to the step difference correcting jack by upward tension using a hydraulic jack, thereby correcting the step according to the difference in height of the precast slab segment.

When the transverse laying of the precast slab segment and the sheath connection are completed, the precast slab segments transversely connected to each other are introduced into the transverse torsion prestress to each other, and railings are installed and the bridge construction is completed.

To this end,

A transverse main beam installed to extend transversely to a top of a precast slab segment mounted to be interconnected in a transverse direction;

A self-supporting bearing mounted on the transverse main beam and slidably moving along the transverse main beam; And a bogie frame having the self-contained bearing part mounted thereto; And

And a tensile connecting rod fixed to the upper surface of the slab of the precast slab segment and extending upward to be connected to a step correction jack provided on the bogie frame

The tension connecting rod is pulled upward by the step correcting jack so that the precast slab segment is pressed downwardly by the reaction force so that the step difference is corrected so that the pre- The present invention provides a precast slab leveling device capable of moving in the lateral direction so that the slabs are connected to each other while moving in the lateral direction.

Also preferably,

The bridge substructure is installed and mounted on a precast slab segment (200) which is mounted to be interconnected laterally to a girder installed in the bridge substructure,

A transverse main beam extending transversely over the precast slab segment,

A self-supporting bearing mounted on the transverse main beam and slidably moving along the transverse main beam; And a transverse bogie including a bogie frame equipped with the self-contained bearing part is installed in the transverse main beam,

And a tensile connecting rod extending upwardly from the upper surface of the slab of the precast slab segment,

The tension connecting rod is pulled upward by the step difference correcting jack so that the precast slab segment is pressed downward by the reaction force so that the step difference is corrected,

Wherein the transverse bogie causes the precast slab segments to transversely move along the transverse main beam so that the slabs are connected to each other, providing a bridge construction method using the precast slab leveling apparatus capable of lateral movement do.

According to the present invention, it is possible to stably correct the step difference in which the amount of rise of the precast slab segments is different from each other, and to perform the lateral directional operation easily because of the lateral movement. Thus, the construction and operation of the precast slab segment It is possible to construct a bridge by using it.

In addition, the time for precast slab segment location setting can be shortened and the constant filling interval can be maintained and a certain filling material can be placed in the interval, which is very advantageous in construction and quality control. Thus, a more efficient and economical precast slab spacing adjustment and sheath connection method and It is possible to provide a method of constructing a bridge to be used.

FIG. 1A is a perspective view of a conventional slab construction method using precast slab segments, FIG.
1B is a perspective view of a conventional precast slab segment,
FIG. 1C is a step-corrected perspective view of a conventional precast slab segment,
FIG. 2A is a perspective view and a side view of a precast slab leveling device capable of moving in the lateral direction of the present invention,
Figure 2b is a perspective view of the lateral bogie of the present invention,
FIGS. 3A, 3B and 3C are operational flowcharts of a perspective view of a pre-cast slab leveling apparatus capable of lateral movement of the present invention,
4A and 4B are flowcharts of a bridge construction method using a precast slab leveling apparatus capable of moving in the lateral direction according to the present invention.

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

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

[Precast Slab Level Adjustment Apparatus (100) of the Present Invention in Which the Side Direction Can Be Moved)

The precast slab step adjustment device (100) capable of moving in the lateral direction of the present invention corrects the rising amount of the precast slab segments having mutually different amounts of upward displacement, In order to enable lateral movement.

The lateral main beam 110 and the lateral bogie 120 so as to have a technical configuration to have a step difference correcting function and a lateral movement function.

FIG. 2A shows a perspective view and a side view of the precast slab leveling apparatus 100 in which the lateral direction is movable.

First, the transverse main beam 110 is formed as a beam member including an upper flange, an abdomen, and a lower flange 113 as an I-shaped steel beam extending in the transverse direction, which means a direction perpendicular to the throttling direction of the bridge.

The transverse main beam 110 serves as a guide member for moving the transverse bogie 120 in a lateral direction while being suspended.

To this end, the present invention allows the lateral bogie 120 to move along the extending direction (transverse direction) of the lower flange 110 of the transverse main beam 110, wherein a chain block (not shown, And the operator uses the lateral bogie 120 to a desired position by using a jig and a coupler.

That is, the transverse bogie 120 can be moved to a desired position by a simple operation without using a driving device such as a separate motor.

To this end, the lateral carriage 120 includes a carriage frame 121 and a self-supporting bearing portion 122.

First, the bogie frame 121 has a function of causing the tensile connecting rod 130 extending from the lower precast slab segment 200 to be fixed and to move in the lateral direction along the transverse main beam 110, It can be understood that it is formed as a rectangular tube member and a rectangular hollow member extending in the longitudinal direction.

The precast slab segment 200 suspended from the bogie frame 121 by the tension connecting rod 130 is required to be corrected when a step with another precast slab segment 200 connected in the transverse direction occurs. The tension connecting rod 130 and the step difference correction jack 140 are used.

That is, the lower end of the tension connecting rod 130 is formed as a bolt portion to be fastened to a nut buried in the upper surface of the slab of the precast slab segment 200, and the upper end of the tension connecting rod 130 passes through the bogie frame 121, And passes through the step difference correction jack 140 provided on the upper surface.

At this time, it can be seen that a bogie frame 121 is installed using the pedestal 150 to secure a clearance space between the pedestrian frame 121 and the precast slab segment 200.

The tensile connecting rod 130 is fixed to the precast slab segment 200 so that the reaction force R is applied to the precast slab 200. [ Is applied to the segment (200) and used to correct the step of the precast slab segment (200).

That is, it is possible to correct the step of the precast slab segment 200 connected based on one precast slab segment 200 and to adjust the precast slab segment 200 to be movable in the transverse direction connected to the plurality of precast slab segments 200 The step difference adjusting devices 100 may be used to apply the reaction force to each other to eliminate the step difference between them.

2A, it can be seen that six of the bogie frames 121 are extended in the lateral direction on the upper surface of one precast slab segment 200.

Thus, two pre-cast slab segments 200 are suspended by two bogie frames 121 so that the pre-cast slab segment 200, which is a heavy material, is stably suspended.

It can be seen that the self-supporting bearing portion 122 is formed on the upper surface of each of the bogie frames 121.

The self-supporting bearing portion 122 has a function of sliding the bogie frame 121 along the lower flange of the transverse main beam 110 by the bearing.

That is, as shown in FIG. 2B, it is understood that a plurality of bearings 122a are installed at a position where the bearing 122a covers the lower flange, and the bearing support includes the bearing housing 122c.

As shown in FIG. 2, it can be seen that the bearing housing 122c is formed as a U-shaped frame with the top center open, and the bearing support 122a is formed on the upper surface of the lower flange 113 of the transverse main beam 110, And is fixed to the inner surface of the bearing housing 122c.

When the truck frame 121 is slid laterally using a chain block (not shown), the precast slab segment 200 installed on the truck frame 121 by the tension connecting rod 130 is also moved in the lateral direction .

At this time, when two transverse bobbins 120 are provided on the upper surface of the precast slab segment 200, they are moved together using the bogie frame connecting member 160. Of course, when one precast slab segment 200 is used, the bogie frame connecting member 160 is not required, and two or more bogie frame connecting members 160 may be used.

[Operation of Precast Slab Level Adjustment Apparatus with Transverse Moving of the Present Invention]

3A, 3B, and 3C illustrate a sequential operation of the step difference correction and the lateral movement of the precast slab segment 200 by the pre-cast slab step adjustment device 100 in which the lateral direction is movable according to the present invention. It is.

3A, it can be seen that the slabs 210 of the precast slab segments 200 are adjacent to each other in the transverse direction. Each slab 210 of the precast slab segment 200 is provided with a bogie frame connecting member A pair of transversely movable pre-cast slab step adjustment devices 100 connected to each other by the tension connection rods 130 and 160 are installed to be suspended by the tension connection rods 130 and the step correction jacks 140.

At this time, it can be seen that the slabs 210 are different in the amount of rising in the lateral direction and have a step difference.

As shown in FIG. 3B, the step difference correcting jack 140 is operated so that the three slabs 210 are horizontally positioned horizontally to cancel the step.

Next, as shown in FIG. 3B, the pre-cast slab leveling apparatus 100, which can move in the lateral direction of the present invention, is moved laterally by a chain block or the like (not shown) so that the side surfaces of the slab 210 are brought into contact with each other .

That is, it can be seen that the pre-cast slab step adjustment device 100, which can move in the lateral direction along the lower flange of the transverse main beam 110 by the bearing part even with a relatively small force, can be moved laterally by the bearing part .

[Method of constructing a bridge using the pre-cast slab step adjustment device capable of moving in the lateral direction of the present invention]

4A and 4B show a bridge construction method using the pre-cast slab leveling apparatus capable of moving in the lateral direction according to the present invention.

First, the bridge substructure 400 is disposed so as to be spaced apart from each other in the longitudinal direction as shown in FIG. 4A. When the girder is mounted, the slab should be constructed on the girder.

Such slabs are constructed in such a way that the precast slab segments 200 are mounted on top of the girders and the slabs 210 of the precast slab segments 200 are laterally connected to one another.

The pre-cast slab segments 200 are preliminarily mounted on the girders. First, the transverse main beams 110 are fixed to both ends of the precast slab segment 200 by, for example, a fixed frame .

That is, the transverse main beam 110 is fixedly installed so as to extend laterally above the horizontally mounted precast slab segment 200.

It can be seen that the lateral flange of this transverse main beam 110 is pre-fitted with the lateral bogie 120.

Next, as shown in FIG. 4B, in a state where the lower end of the tension connecting rod 130 is fixed to the upper surface of the slab of the precast slab segment 200 using a nut buried in the upper surface of the slab of the precast slab segment 200, So that the upper end portion of the jacket 140 can be fixed to the upper surface of the step difference correcting jack 140 by passing through the step difference correcting jack 140 provided on the upper surface of the transverse track 120. [

As shown in FIGS. 3A and 3B, the slabs of the pre-cast slab segments 200 are corrected, and the slabs are positioned at a predetermined distance from each other. Then, the slabs are connected to each other using an unshown slab formwork.

At this time, the precast slab segments 200 are connected to each other in the horizontal direction.

As a result, as shown in FIG. 4B, a transverse tensile material is inserted into the sheath and the both ends are fixed on the precast slab segment 200 after tensing, thereby completing the bridge by introducing a prestress into the precast slab segments 200 in the transverse direction .

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

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

100: Precast slab step adjustment device with lateral movement
110: transverse main beam 110a: lower flange
120: transverse bogie
121: Bogie frame 122: Self-aligning bearing part
122a: Bearing support 122c: Bearing housing
130: Tension connection rod 140: Step correction jack
150: pedestal 160: bogie frame connecting member
200: Precast slab segment
210: Slab 400: Bridge infrastructure

Claims (6)

A transverse main beam 110 installed to extend transversely on top of precast slab segments 200 mounted to be interconnected in a transverse direction;
A self-supporting bearing portion 122 mounted on the transverse main beam 110 and slidably moving along the transverse main beam 110; And a transverse bogie (120) including a bogie frame (121) with the self-contained bearing part mounted thereon; And
And a tension connecting rod 130 which is fixed to the upper surface of the slab of the precast slab segment 200 and connected to the level difference jack 140 provided on the moving frame 122,
The tension connecting rod 130 is pulled upward by the step correcting jack 140 so that the precast slab segment 200 is pressed downward by the reaction force so that the step difference is corrected, Wherein the pre-cast slab segments move transversely along the transverse main beam (110) so that the slabs (210) are connected to each other. The method according to claim 1,
The transverse main beam 110 is an I-beam containing an upper flange, a belly and a lower flange 110a so that the self-supporting bearing portion 122 of the lateral bogie 120 moves along the lower flange 110a However,
The self-contained bearing portion 122
A bearing support 122b provided with a bearing 122a installed to be in contact with the lower flange; And a bearing housing 122c that receives the bearing support 122b and is fixed to the support frame 121,
The bearing support 122b is disposed on the upper surface, the side surface and the bottom surface of the lower flange 110a of the transverse main beam 110 so as to be fixed to the inner surface of the bearing housing 122c. This is possible precast slab leveler. The method according to claim 1,
A pedestal 150 is further provided on the upper surface of the slabs of the transverse bogie 120 and the precast slab segment 200 to provide a distance between the bottom surface of the transverse bogie 120 and the upper surface of the slab of the precast slab segment 200 And a space is formed between the pre-cast slab and the pre-cast slab. The method according to claim 1,
The transverse bogie 120 is provided with at least one transverse main beam 110 so that it is connected to the upper surface of the slab segment of the precast slab segment 200 by the tension connecting rod 130, Characterized in that the transverse bogie (120) is connected to each other by the bogie frame connecting member (160) when the plurality of transverse bogies are connected to each other by the tension connecting rods in the slab segment (200) Possible precast slab leveler. The bridge substructure 400 is installed and mounted on the precast slab segment 200 which is mounted so as to be interconnected laterally to the girders installed in the bridge substructure,
A transverse main beam (110) is installed on the precast slab segment (200) to extend laterally,
A self-supporting bearing portion 122 mounted on the transverse main beam 110 and slidably moving along the transverse main beam 110; And a transverse bogie (120) including a bogie frame (121) equipped with the self-contained bearing part are installed in the transverse main beam (110)
And a tensile connecting rod 130 is installed to penetrate the step difference correction jack 140 provided on the bogie frame 122 by being fixed to the upper surface of the slab of the precast slab segment 200,
The tension connecting rod 130 is pulled upward by the step correction jack 140 so that the precast slab segment 200 is pressed downward by the reaction force to correct the step difference,
Characterized in that said transverse bogie (120) causes said slabs (210) to be connected to one another while the precast slab segments are transversely moving along the transverse main beam (110). Bridge construction method using precast slab leveler. 6. The method of claim 5,
Wherein the transverse bogie (120) is slid along a transverse main beam using a chain block to move. The method of claim 1, wherein the transverse bogie (120)

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