KR100905317B1 - Precast segment for structure and construction method therewith - Google Patents

Abstract

A precast segment for structure and a construction method using the same are provided to construct a column structure like pier having a large diameter more easily by using the precast segment. A precast segment for structure comprises a precast segment(100) consisting of unit precast segments(110~160) which are installed in the traverse direction and embedded with a horizontal sheath(210) whose both ends are exposed outside and which are joined to be connected; and a tension member(200) which is inserted and fixed to the horizontal sheath to press and join the unit precast segments.

Description

Precast Segment for Structures and Structure Construction Method Using the Same {PRECAST SEGMENT FOR STRUCTURE AND CONSTRUCTION METHOD THEREWITH}

The present invention relates to a precast segment for a structure and a structure construction method using the same. More specifically, the present invention relates to a method for constructing a structure in which a structure (such as a pillar structure) can be easily constructed by using a segment manufactured in a precast manner so as to extend up and down, such as a pier, shifts, a chimney, an interpass, and the like. .

FIG. 1 illustrates a construction assembly diagram in which a bridge, which is a kind of columnar structure for a conventional bridge construction, is laminated in a precast manner.

That is, the base portion 10, the first pier segment 50, the first to fourth pier segments 50 to 80, the fourth pier segment 80, and the coping unit 90 are coupled to each other up and down, respectively. The first to fourth steel pipe (20a ~ 20d) passing through the hole (H) of the structure is coupled to each other by the first to fourth steel bar (30a ~ 30d) passing through the steel pipe (20a ~ 20d) Has

The bridge construction method using the precast method is important for the integrity of each pier segment and the pier segment and the foundation portion and the coping portion. For this purpose, the steel pipe or steel rod as shown in FIG. It can be seen that it is possible to ensure the integrity of the segment and the like by using.

However, in the case of a pier segment, it was common to manufacture a segment member in the form of a hollow tube or a stuffed pillar having a constant height.

Therefore, in order to manufacture the hollow tube or columnar segment member, a factory and a facility for manufacturing the same are required, and since the necessary form must be prepared for each segment, some recycling is possible, but it is useful only for the same construction, and in other bridges, etc. In fact, since there is no choice but to manufacture segment members having different diameters, there is a problem in that it is not particularly efficient in terms of formability recycling.

In addition, it does not matter if the diameter of the pier segment is about 1-2M, but the construction of the larger pier segment is not easy to carry even if it is possible to manufacture. There was a problem that only.

In this regard, the present invention is particularly easy in the precast method for a structure that is extended up and down, such as a column structure, such as a pier having a large diameter, easy to carry and easy to construct precast segment for the structure and the structure using the same The technical problem to solve the provision of the construction method.

The present invention to achieve the above technical problem

First, in stacking the precast segments having a height of about 1-2 m up and down, the precast segments are assembled into a single shape and a plurality of unit precast segments, rather than a conventional one. It was made to be.

These unit precast segments can be fabricated in a variety of shapes and sizes, making them easy to apply to structures with multiple cross-sectional shapes.

Second, the unit precast segments were compressed by tension means so that they could be integrated with each other. Such tension means (tension material, sheath, etc.) may be arranged in a variety of tension means for the integration behavior of the unit precast segments such as to overlap each other.

According to the present invention, a unit precast segment can be fabricated in a desired shape by assembling a plurality of units manufactured in various shapes, and the unit precast segment is more efficient and economical because it is easy to carry and assemble. The bridge substructure construction method using the precast segment for the structure becomes possible.

An embodiment of the present invention described above and illustrated in the drawings should not be construed as limiting the technical spirit of the present invention. The protection scope of the present invention is limited only by the matters described in the claims, and those skilled in the art can change and change the technical idea of the present invention in various forms. Therefore, such improvements and modifications fall within the protection scope of the present invention as long as it will be apparent to those skilled in the art.

BRIEF DESCRIPTION OF DRAWINGS To describe the present invention more clearly and easily, the following describes the best embodiments of the present invention in detail with reference to the accompanying drawings, and embodiments according to the present invention may be modified in various other forms, and thus the scope of the present invention. Is not limited to the embodiment described below.

The precast segment and the precast segment, which are manufactured by integrating the unit precast segments of the present invention by using a tensioning means, are constructed by stacking up and down precast segments, for example, a column structure such as a pier. In between, structures such as chimneys can also be constructed by the present invention.

In the present invention, a look at the column structure such as a pier in particular.

Figure 2a shows the unit precast segment (110 ~ 160) and the precast segment 100 is integrated by pressing it by the tension means 200 according to the present invention.

First, the precast segment 100 may be in the form of a hollow tube having a predetermined height in the final cross-sectional shape formed by integrating the unit precast segments 110 to 160, or may be filled in a solid form.

That is, as shown in FIG. 2A, the precast segment 100 may be manufactured in a hollow cross section or in a solid cross section in which an internal hollow is not formed as shown in FIG. 3.

In consideration of the fact that the overall diameter of the precast segment 100 is not easy to manufacture and transport, the precast segment 100 is divided into a plurality of unit precast segments 110 to 160. However, the number of divisions may be at least two or three or more, but not otherwise specified.

That is, in the case of FIG. 2A, the integrated cross-sectional shape of the unit precast segments 110 to 160 is formed as the precast segment of the final circular cross section.

As described above, in the precast segment 100 having a circular hollow tube shape, each unit precast segment 110 to 160 may be divided into a trapezoidal cross-sectional shape.

As shown in FIG. 4, in the precast segment 500 having an elliptical (track) hollow tube shape, each unit precast segment 510 to 560 has a combination of a trapezoidal cross-sectional shape and a rectangular cross-sectional shape (cuboid). It can be seen.

The unit precast segments 110 to 160 and 510 to 560 of this type may be manufactured by using formwork suitable for the shape thereof, and thus, may be manufactured in the form of trapezoidal blocks or cuboid blocks.

These unit precast segments (110 ~ 160, 510 ~ 560) may be made of reinforced concrete, the inside of the two ends of the block penetrating through the inside so that the tension means 200 to be described later can be inserted therein Sheath 210, 220 (SHEATH, in the form of a circular tube) is installed to be embedded so as to be exposed.

One sheath may be installed, two or more may be installed, and a plurality may be installed up and down.

These sheaths, when the respective unit precast segments (110 to 160, 510 to 560) are assembled such that both end sides are in contact with each other, the tension means 200 is each unit precast segment (110 to 160, 510 to 560) ) To communicate with each other.

In addition, the unit precast segments 110 to 160 and 510 to 560 may be manufactured in the form of a composite block made of steel and concrete.

That is, it can be manufactured as a composite block filled with concrete 112 inside the closed steel shell 111.

The steel shell 111 is manufactured by welding a steel sheet, for example, in the form of a trapezoidal block, and filling the concrete 112 therein using a through hole not shown, so that the final concrete 112 is made of FRP or steel shell ( 111) It is possible to manufacture a composite block synthesized with each other by the stud not shown further formed on the inner surface.

When the unit precast segments 110 to 160 and 510 to 560 are manufactured using the composite block, the self weight and the cross-sectional size of the block can be significantly reduced, which is advantageous in transportation, assembly and construction.

At this time, the sheath (210, 220) is the same when each unit precast segment (110 ~ 160, 510 ~ 560) is assembled so that both end side contact with each other, the tension means 200 is each unit precast segment (110) ~ 160, 510 ~ 560) to be set to communicate so as to pass through.

As such, when the unit precast segments 110 to 160 and 510 to 560 of the final block form are manufactured in the form of blocks or synthetic blocks, both sides of the unit precast segments 110 to 160 and 510 to 560 are in contact with each other. While setting the respective sheaths to communicate with each other, they are compressed and integrated with each other by the tension means 200.

To this end, for example, as shown in FIG. 2B, first, the three unit precast segments 110 to 130 are installed to be in contact with each other, and then the PC strand as the tension unit 200 is connected to the upper part of the unit precast segments 110 to 130. Inserted into the sheath 210, the both ends of the tension means 200 exposed to the outside is first fixed at the side of the unit precast segment (110, 130),

The remaining three unit precast segments 140 to 160 are also compressed and integrated with each other using tension means in the same manner.

In the case of the lower sheath 220, the upper sheath 210 and the arrangement are staggered from each other, so that the unit precast segments 110 to 160 are compressed and integrated.

Of course, the arrangement and tension of the tension means 200, the fixing method can be set in a variety of different forms, which is the end of the unit precast segments 110 ~ 160, 510 ~ 560 is surely integrated to the purpose To achieve this, a variety of methods could be adopted.

For example, the sheath 210 may be exposed to the side surfaces of the unit precast segments 110 to 160, but in this case, since the formation position of the tension means may also be the side of the unit precast segments 110 to 160. The exposed position of the sheath may be exposed to the inner side or the outer side of the unit precast segments 110 to 160 to enhance aesthetics, and may be formed in consideration of workability in forming positions of the tension means.

Further, according to Figure 5a, both ends of the sheath is installed so as to overlap each other over a certain length so that the tension means 200 are installed so as to overlap each other to ensure the efficiency in the integration of the unit precast segment (510 ~ 560) To make it possible,

According to Figure 5b, it can be seen that the tension means 200 can be installed in various ways, such as two sheaths are arranged in parallel to each other overlapping each other in different positions.

As such, when the unit precast segments 110 to 160 are compressed and integrated, the final precast segment 100 may be manufactured. Such fabrication will be described later, but the assembly work is performed in the field.

In other words, in the factory, a plurality of unit precast segments 110 to 160 are prepared in advance, and transported to the site, and then the unit precast segments 110 to 160 are compressed and integrated in the field.

Next, a method of constructing a pier, which is a bridge substructure, using the unit precast segments 110 to 160 described above will be described with reference to FIGS. 2A to 2E. However, the unit precast segments 110 to 160 according to the present invention will be described. 160 may be applicable to a precast segment 100 structure in which a structure (such as a pillar structure form) is precasted so as to extend up and down, such as, for example, a bridge, a chimney, an interpass, and the like.

First, when the unit precast segment (110 ~ 160) is manufactured at the factory or the production site near the site, it is carried to the site and brought in, using the tension means 200 as shown in Figure 2a of the first floor of the first floor Allows a large number of cast segments 100 to be prepared.

In the case of the production site near the site, the factory is too far from the site, and a large number of unit precast segments 110 to 160 may be used when it is to be manufactured, but it is economical to make the factory to be manufactured and transported. Would be preferred.

First, the transverse sheaths 210 and 220 are embedded therein, and the unit precast segments 110 to 160 installed so that both ends of the sheath are exposed to the outside from the side are manufactured at a factory or a site near the site.

After the unit precast segments 110 to 160 are brought into the field, a plurality of unit precast segments are arranged such that the transverse sheaths 210 and 220 communicate with each other.

The tension means 200 is inserted into the transverse sheaths of the unit precast segments 110 to 160 as shown in FIG. 2B, and then tensioned and fixed, thereby compressing the plurality of unit precast segments to each other, as shown in FIG. 2C. A plurality of integrated precast segments 100a, 100b, 100c, and 100d will be manufactured.

This manufacturing method is the same as the above.

When a plurality of precast segments (100a, 100b, 100c, 100d) is prepared as described above, the base portion 300 serving as a base plate on which the precast segments can be stacked is set as shown in FIG. 2B.

The foundation 300 may be installed in a conventional manner by the formwork and the site casting method.

At this time, the upper surface of the base 300 may be a steel rod, which is a vertical connecting member 310 that can integrate a plurality (100a, 100b, 100c, 100d) of the precast segment in the vertical direction can be protruded first.

To this end, in the unit precast segments 110 to 160 described above, a plurality of precast segments 100a, 100b, 100c, and 100d may be communicated up and down in correspondence with the number of installation of the steel rods, which are the vertical connecting members 310. The upper and lower through-holes 330 are manufactured to be formed in a further state.

The upper and lower through holes 330 may be formed by penetrating the upper and lower surfaces of the unit precast segments 110 to 160.

When the base 300 is set, the precast segments are installed in a manner of stacking a plurality of precast segments 100a, 100b, 100c, and 100d up and down as shown in FIG. 2B.

2b, it can be seen that four precast segments (100a, 100b, 100c, and 100d) are stacked and installed by steel rods, which are vertical connecting members 310, but may be four or less or more. .

Next, as shown in FIG. 2C, the coping part 400 is installed in the uppermost precast segment 100d. In this case, in the case of the steel rod, which is the vertical connecting member 310, the coping part 400 protrudes upward from the upper surface of the uppermost precast segment 100d. The length is set to extend to the top of the coping 400.

Such a setting may be desirable to be set by connecting the steel rods which are vertical connecting members 310 to each other.

Accordingly, when the coping part 400 is set to the uppermost precast segment 100d, the upper end of the steel bar, which is the vertical connecting member 310, is positioned inside the exposed blockout part 410 of the upper surface thereof. The final precast segment (100a, 100b, 100c, 100d) is pressed up and down with the coping part 400 by using the fixing nut 320 to the upper end of the steel bar to be integrated.

As a result, it can be seen that the bridge substructure pier can be more effectively manufactured as shown in Figure 2d and 2e.

At this time, the coping portion 400 is set in the case of the pier, in the case of the shift may be a different type of structure.

Accordingly, the plurality of precast segments 100a, 100b, 100c, and 100d according to the present invention are stacked in a vertical direction while being stacked up and down, thereby forming at least a bridge pier or alternating trunk portion,

It can be seen that the base portion 300, the coping portion 400, or other types of structures may be set at the bottom and bottom of the precast segments 100a, 100b, 100c, and 100d integrated with each other.

In addition, the plurality of precast segments (100a, 100b, 100c, 100d) will be able to be integrated with each other by pressing other than the steel rods of the vertical connecting member 310 up and down.

1 illustrates a construction assembly diagram of a conventional precast pier.

Figures 2a, 2b, 2c, 2d and 2e shows the structure construction method using the precast segment for the structure according to the present invention in order.

3 and 4 illustrate embodiments of a precast segment for a structure in which multiple unit precast segments of the present invention are compressed together.

Figures 5a and 5b show examples of the installation of the tension means of the precast segment for the structure of the present invention.

<Major drawing>

100,500: precast segment for structures

110,120,130,140,150,160,510,520,530,540,550,560: Unit precast segment

200: tension means

210: Sheath

Claims (7)

The transverse sheath 210 is embedded therein so that a plurality of unit precast segments 110 to 160, 510 to 560 installed so that both ends of the sheath are exposed to the outside are arranged to be in contact with each other in the transverse direction, and the transverse sheaths are formed. Precast segments 100 and 500 assembled to communicate with each other; And And tension means (200) inserted into the transverse sheaths of the unit precast segments (100,500) and then tensioned and settled to squeeze and integrate a plurality of unit precast segments with each other. The precast segment for a structure according to claim 1, wherein each of the unit precast segments is formed in the form of a concrete-filled composite block inside the shell including a block made of concrete or a closed hollow steel block. The precast segment for a structure according to claim 1 or 2, wherein the precast segment integrated by the tensioning means is formed in a hollow cross section or a solid cross section. The precast segment for a structure according to claim 1 or 2, wherein the precast segments integrated by the tensioning means are stacked so as to be stacked up and down and integrated with each other in the vertical direction. A transverse sheath is embedded therein so that both ends of the sheath are exposed to the outside, and a unit precast segment having a through hole penetrating the upper and lower surfaces is manufactured at a factory or near the production site. After bringing the unit precast segment into the field, a plurality of unit precast segments are arranged such that the transverse sheaths communicate with each other, A tension means is inserted into the transverse sheaths of the unit precast segments, followed by tension and fixation to squeeze the plurality of unit precast segments together to produce an integrated precast segment, A method for constructing a structure using a precast segment for a structure comprising forming a body part of the structure by integrating the structure precast segment up and down by using a vertical connecting member inserted into the through holes of the unit precast segments. . The method of claim 5, wherein each of the unit precast segments is manufactured in the form of a concrete block or a synthetic block filled with concrete in an outer shell including a closed hollow steel block. . The structure construction method according to claim 5 or 6, wherein the precast segment integrated by the tensioning means is formed to have a hollow cross section or a solid cross section. .

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