KR20160044709A - Precast piers and precast construction method using the same piers - Google Patents
Precast piers and precast construction method using the same piers Download PDFInfo
- Publication number
- KR20160044709A KR20160044709A KR1020140139362A KR20140139362A KR20160044709A KR 20160044709 A KR20160044709 A KR 20160044709A KR 1020140139362 A KR1020140139362 A KR 1020140139362A KR 20140139362 A KR20140139362 A KR 20140139362A KR 20160044709 A KR20160044709 A KR 20160044709A
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- Prior art keywords
- segment
- precast
- hollow
- lowermost
- coping
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to a precast bridge pier and a precast bridge pier construction method using the precast pier bridge. More particularly, the present invention relates to a precast pier bridge construction method of forming a hollow on a lower surface of a lowermost segment to increase a prestress generated in a joint between a pierce segment and a foundation plate, And a precast bridge pier construction method using the same. According to one aspect of the present invention, A pillar portion including a plurality of pierce segments stacked on the base portion; And a capping portion disposed on the upper portion of the pillar portion, wherein a lowermost segment of the plurality of piercing segments has an area in contact with the base portion at the lower surface thereof smaller than a front end surface thereof in order to increase a prestress acting on the lowermost segment A precast bridge pier provided with a hollow segment having a partial hollow that is recessed by a predetermined length from the central portion thereof may be provided.
Description
The present invention relates to a precast bridge pier and a precast bridge pier construction method using the precast pier bridge. More particularly, the present invention relates to a precast pier bridge that improves a prestress acting on a joint of a bridge pier segment, and a precast bridge pier construction method using the precast pier bridge.
Generally, a pier supporting a bridge is constructed mainly as a concrete structure as a compression member. In recent years, bridges have been constructed more and more in urban areas. As the roads become more complicated, more and more bridges are being built in urban bridges.
In constructing such a bridge in a downtown area, the bridges supporting the bridges have a long structure. In the method of constructing the bridges, a die made of a slip form of steel is installed, The slip foam is moved upward while the concrete is being poured at a predetermined height from the ground surface to increase the height of the pier.
However, this type of concrete can be installed after concrete cured at a predetermined height is cured. Therefore, it takes a lot of time to construct a bridge, which is an important factor for increasing the construction time of the entire bridge. Therefore, there is a great demand in the industry for improvement of the construction method for the construction of the bridge pier.
One aspect of the present invention is to provide a precast bridge bridge that temporarily forms a partial hollow on a lower surface of a bridge segment to increase an introduction compressive stress caused by a prestress generated at a bridge portion between a bridge segment and a foundation portion and a precast bridge construction method .
Another object of the present invention is to provide a precast bridge pier which increases the prestress acting on the lowermost segment by intermediate-fixing a part of the tension member to the lowermost segment of the pierce segment, and a precast bridge pier construction method using the same.
It is to be understood that the present invention is not limited to the above-described embodiments and that various changes and modifications may be made without departing from the spirit and scope of the present invention as defined by the following claims .
According to one aspect of the present invention, A pillar portion including a plurality of pierce segments stacked on the base portion; And a capping portion disposed on the upper portion of the pillar portion, wherein a lowermost segment of the plurality of piercing segments has an area in contact with the base portion at the lower surface thereof smaller than a front end surface thereof in order to increase a prestress acting on the lowermost segment Wherein the hollow segment is provided with a hollow portion having a hollow portion that is recessed from the center portion by a predetermined length.
According to another aspect of the present invention, Placing a bottom segment on the base; Intermediate tensioning the first tensioning material from the base to the lowermost segment so that a prestress is applied to the lowermost segment, in a tensioned state on top of the lowermost segment; Stacking a plurality of pierce segments on top of the lowermost segment; Installing a coping portion on top of the plurality of pierce segments; Fastening a plurality of fasteners continuously extending through a coupler at an upper end of the first tensional material to an upper portion of the coping portion in an untensioned state on the upper portion of the coping portion; And fixing the second tensional material extending from the base portion to the coping portion in a tensioned state on the upper surface of the coping portion.
It is to be understood that the solution of the problem of the present invention is not limited to the above-mentioned solutions, and the solutions which are not mentioned can be clearly understood by those skilled in the art to which the present invention belongs It will be possible.
According to the present invention, it is possible to form a partial hollow at the center of the lower surface of the pierced segment, thereby increasing the compressive stress caused by the prestress generated at the joint between the pierced segment and the base.
In addition, the precast bridge segments manufactured at the factory are laminated in multi-stages at the base, and the steel rods are fixed to the lowermost segment, thereby enhancing the prestress acting on the first segment joint, which is the main point of the design.
The effects of the present invention are not limited to the above-mentioned effects, and the effects not mentioned can be clearly understood by those skilled in the art from the present specification and the accompanying drawings.
1 is a perspective view of a precast bridge pier in accordance with an embodiment of the present invention.
2 is a cross-sectional view of a precast bridge pier according to an embodiment of the present invention.
3 is a cross-sectional view of a base according to an embodiment of the invention.
4 is a cross-sectional view of a hollow segment according to an embodiment of the present invention.
5 is a cross-sectional view of a non-beaded segment according to an embodiment of the present invention.
2 and 5 are cross-sectional views taken along the line A-A '.
6 is a flowchart of a precast pier construction method according to an embodiment of the present invention.
7-11 are assembly views of a precast bridge pier according to an embodiment of the present invention.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to be illustrative of the present invention and not to limit the scope of the invention. Should be interpreted to include modifications or variations that do not depart from the spirit of the invention.
Although the terms used in the present invention have been selected in consideration of the functions of the present invention, they are generally used in general terms. However, the present invention is not limited to the intention of the person skilled in the art to which the present invention belongs . However, if a specific term is defined as an arbitrary meaning, the meaning of the term will be described separately. Accordingly, the terms used herein should be interpreted based on the actual meaning of the term rather than on the name of the term, and on the content throughout the description.
The drawings attached hereto are intended to illustrate the present invention easily, and the shapes shown in the drawings may be exaggerated and displayed as necessary in order to facilitate understanding of the present invention, and thus the present invention is not limited to the drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of known configurations or functions related to the present invention will be omitted when it is determined that the gist of the present invention may be obscured.
According to one aspect of the present invention, A pillar portion including a plurality of pierce segments stacked on the base portion; And a capping portion disposed on the upper portion of the pillar portion, wherein a lowermost segment of the plurality of piercing segments has an area in contact with the base portion at the lower surface thereof smaller than a front end surface thereof in order to increase a prestress acting on the lowermost segment Wherein the hollow segment is provided with a hollow portion having a hollow that is recessed from the center portion by a predetermined length.
And wherein the hollow segment is provided from the bridge segment closest to the lowermost segment to the bridge segment adjacent to the n-th bridge segment (n is a natural number greater than 1) adjacent to the lowest segment among the plurality of bridge segment segments.
The partial hollow may be formed in a shape having the same diameter and height.
The partial hollow can also be filled with a grouting agent after prestressing the lowermost segment by a tensile material.
A first tensile member fixed to the base portion and extending to protrude from an upper portion of the lowermost segment; And an intermediate fixing port for fixing the first tension member in a tensioned state on the upper surface of the lowermost segment.
The intermediate fixture may further include an anchor plate contacting the upper surface of the lowermost segment to transmit a prestress according to a tension condition of the first torsion spring to the lowermost segment and a lock nut disposed on the anchor plate to tension the first tension member, . ≪ / RTI >
The first tensional material may be a steel rod.
And a plurality of fixing members continuously connected in a non-stretched state from the upper end of the first tensional element to the upper surface of the coping portion.
The lowermost fixture and the first tensional element among the plurality of fixtures may be fastened by a coupler.
A second tensile member fixed to the base portion and extending to an upper surface of the coping portion; And a tension fixture for fixing the second tension member in a tensioned state on the upper surface of the coping unit.
And the second tensional element is a stranded wire.
According to another aspect of the present invention, Placing a bottom segment on the base; Intermediate tensioning the first tensioning material from the base to the lowermost segment so that a prestress is applied to the lowermost segment, in a tensioned state on top of the lowermost segment; Stacking a plurality of pierce segments on top of the lowermost segment; Installing a coping portion on top of the plurality of pierce segments; Fastening a plurality of fasteners continuously extending through a coupler at an upper end of the first tensional material to an upper portion of the coping portion in an untensioned state on the upper portion of the coping portion; And fixing the second tensional material extending from the base portion to the coping portion in a tensioned state on the upper surface of the coping portion.
And wherein the lowermost segment is provided as a hollow segment having a partial hollow; And filling the partial hollow with the grouting agent after the straining step is completed.
Hereinafter, a
Precast is a concrete member that is put into place or assembled after the concrete has hardened. In other words, it is a concrete member manufactured in advance in a factory or the like and used as a concrete member to be transported to the site. This pre-cast can significantly reduce air and reduce management costs.
FIG. 1 is a perspective view of a
1, a
First, the
The
The
Each of these components of the
In the present invention, the
The fastening material and the tensioning material can be fixed or fixed by the
Meanwhile, in the present invention, the piercing segment constituting the
The
The
For example, as shown in FIG. 2, a
The
If the
Similarly, as the
In the above description, the
That is, in the present invention, the
Hereinafter, each component of the
FIG. 3 is a cross-sectional view of a base 1100 according to an embodiment of the present invention, FIG. 4 is a cross-sectional view of a
Referring to FIG. 3, the
A
On the upper surface of the
Also, a
4 and 5, a piercing segment constituting the
A protrusion may be formed around the upper surface of the bridge segment so that the bridge segment seated on the bridge segment stably stays on the upper surface of the bridge segment, and a depression having a shape corresponding to the protrusion of the lower bridge segment may be formed around the lower surface of the bridge segment.
Referring to FIG. 4, the
The shape in which the partial hollow 1240 is recessed may be similar to the shape of the circular column and may be, for example, in the form of a circular column, an elliptical column or a polygonal column. Here, in the case of the partial hollow 1240 which is recessed in the form of a circular column, the diameter and the height may substantially match each other. When the diameter and height of the partial hollow 1240 are equal to each other, the stress acting on the upper surface and the side surface of the partial hollow 1240 is equalized.
These
A
An
Referring to FIG. 5, a
Hereinafter, a method of constructing the
6, a precast bridge pier construction method includes a step S110 of installing a
Hereinafter, each of the above-described steps will be described in more detail.
7-11 are assembly views of a
Referring to FIG. 7, in the pre-cast pier construction method, the
Referring to FIG. 8, a
The
When the
The
Next, referring to FIG. 9, a reinforcing
The reinforcing
The reinforcing
After the
The
The stranded
The inserted
Finally, mortar and concrete (grouting agent) can be placed in the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments of the present invention described above can be implemented separately or in combination.
Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as falling within the scope of the present invention.
1000: precast bridge 1100: foundation
1120, 1220, 1260, 1320: Sheath tube 1200:
1200a:
1240: partial hollow 1200b: non-centered ball segment
1300: Coping part 1420: Steel bar
1440: Rebar 1460: Strand
1480: coupler 1520: fixed anchorage
1540:
1544, 1564: Locknat 1560: Tension anchorage
1580: Fixture
Claims (13)
A pillar portion including a plurality of pierce segments stacked on the base portion; And
And a coping portion disposed on the upper portion of the column portion,
The lower most of the plurality of piercing segments is formed with a partial hollow that is recessed from a central portion of the lower surface in a predetermined length so that an area in contact with the base portion on the lower surface thereof is smaller than a front end surface in order to increase a prestress acting on the lowermost segment Characterized in that it is provided as a hollow segment
Precast piers.
Wherein the hollow segment is provided with an n-th (where n is a natural number greater than 1) adjacent bridge segment from the bridge segment closest to the lowermost segment of the plurality of bridge segments.
Precast piers.
Characterized in that the partial hollow is formed in a shape having the same diameter and height
Precast piers.
The partial hollow is filled with a grouting agent after prestressing the lowermost segment by a tensile material
Precast piers.
A first tension member fixed to the base portion and extending to protrude from an upper portion of the lowermost segment; And
And an intermediate fixing port for fixing the first tension member in a tensioned state on an upper surface of the lowermost segment
Precast piers.
Wherein the intermediate fixation port comprises an anchor plate contacting the top surface of the bottom segment to transmit a prestress according to the tension condition of the first tensions to the bottom segment and a lock nut disposed on the anchor plate to tension the first tensions Included
Precast piers.
Characterized in that the first tensional element is a steel rod
Precast piers.
And a plurality of fixing members continuously connected in a non-stretched state from the upper end of the first tensional element to the upper surface of the coping portion
Precast piers.
The lowermost fixture and the first tension member among the plurality of fixtures are fastened by a coupler
Precast piers.
A second tensile member fixed to the base portion and extending to an upper surface of the coping portion; And
And a tension fixture for fixing the second tension member in a tensioned state on the upper surface of the coping unit
Precast piers.
Characterized in that the second tensional element is a stranded wire
Precast piers.
Placing a bottom segment on the base;
Intermediate tensioning the first tensioning material from the base to the lowermost segment so that a prestress is applied to the lowermost segment, in a tensioned state on top of the lowermost segment;
Stacking a plurality of pierce segments on top of the lowermost segment;
Installing a coping portion on top of the plurality of pierce segments;
Fastening a plurality of fasteners continuously extending through a coupler at an upper end of the first tensional material to an upper portion of the coping portion in an untensioned state on the upper portion of the coping portion; And
And fusing a second tensional material extending from the base portion to the coping portion in a tensioned state on the upper surface of the coping portion
Precast pier construction method.
Providing a lowermost segment as a hollow segment having a partial hollow; And
Further comprising the step of filling the partial cavity with a grouting agent after the straining step is completed
Precast pier construction method.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020140139362A KR101687072B1 (en) | 2014-10-15 | 2014-10-15 | Precast piers and precast construction method using the same piers |
PCT/KR2014/013096 WO2016060334A1 (en) | 2014-10-15 | 2014-12-31 | Precast pier and precast pier construction method using same |
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KR1020140139362A KR101687072B1 (en) | 2014-10-15 | 2014-10-15 | Precast piers and precast construction method using the same piers |
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KR20160044709A true KR20160044709A (en) | 2016-04-26 |
KR101687072B1 KR101687072B1 (en) | 2016-12-16 |
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WO (1) | WO2016060334A1 (en) |
Cited By (4)
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CN108660910A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Precast pier, track support component and its manufacture installation method |
CN111455834A (en) * | 2020-04-14 | 2020-07-28 | 北京工业大学 | Self-resetting prefabricated assembled pier and construction method thereof |
CN111455833A (en) * | 2020-04-14 | 2020-07-28 | 北京工业大学 | Self-resetting prefabricated assembled pier and construction method thereof |
CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
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2014
- 2014-10-15 KR KR1020140139362A patent/KR101687072B1/en active IP Right Grant
- 2014-12-31 WO PCT/KR2014/013096 patent/WO2016060334A1/en active Application Filing
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JPH06264413A (en) * | 1992-10-08 | 1994-09-20 | Keihan Concrete Kogyo Kk | Prefabrication method of bridge pier and bridge pier concrete block |
KR20070020826A (en) * | 2005-08-17 | 2007-02-22 | 고려대학교 산학협력단 | A prestresed connection set bridge post using unit filled concrete with internally confined hollow and a method for construction |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108660910A (en) * | 2017-03-31 | 2018-10-16 | 比亚迪股份有限公司 | Precast pier, track support component and its manufacture installation method |
CN111455834A (en) * | 2020-04-14 | 2020-07-28 | 北京工业大学 | Self-resetting prefabricated assembled pier and construction method thereof |
CN111455833A (en) * | 2020-04-14 | 2020-07-28 | 北京工业大学 | Self-resetting prefabricated assembled pier and construction method thereof |
CN113481870A (en) * | 2021-08-11 | 2021-10-08 | 柳州欧维姆机械股份有限公司 | Prestressed anchoring structure system for assembling multi-segment bridge pier and assembling construction method of multi-segment bridge pier |
Also Published As
Publication number | Publication date |
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KR101687072B1 (en) | 2016-12-16 |
WO2016060334A1 (en) | 2016-04-21 |
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