KR101954403B1 - Construction method of precast concrete column - Google Patents
Construction method of precast concrete column Download PDFInfo
- Publication number
- KR101954403B1 KR101954403B1 KR1020170108937A KR20170108937A KR101954403B1 KR 101954403 B1 KR101954403 B1 KR 101954403B1 KR 1020170108937 A KR1020170108937 A KR 1020170108937A KR 20170108937 A KR20170108937 A KR 20170108937A KR 101954403 B1 KR101954403 B1 KR 101954403B1
- Authority
- KR
- South Korea
- Prior art keywords
- bottom pad
- column
- concrete
- column segment
- pad
- Prior art date
Links
- 238000010276 construction Methods 0.000 title claims abstract description 66
- 239000011178 precast concrete Substances 0.000 title claims abstract description 43
- 239000004567 concrete Substances 0.000 claims abstract description 104
- 238000005266 casting Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000009415 formwork Methods 0.000 claims description 14
- 230000000149 penetrating Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000000875 corresponding Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 230000003014 reinforcing Effects 0.000 description 12
- 230000004048 modification Effects 0.000 description 6
- 238000006011 modification reaction Methods 0.000 description 6
- 210000001503 Joints Anatomy 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 210000002356 Skeleton Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003111 delayed Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
Abstract
A precast concrete column construction method is disclosed. According to an aspect of the present invention, there is provided a method of constructing a precast concrete column, comprising: preparing a bottom pad for a match pad by laying a concrete for a bottom pad; Forming a mold for a column segment with the top surface of the bottom pad as a bottom surface so as to match cast the upper surface of the bottom pad at a factory, and pouring and curing the concrete to form a column segment; Separating the column segment from the bottom pad and transporting the bottom pad to a construction site; A support structure for supporting the bottom pad at a construction site; installing a concrete foundation die to surround the support structure; Lifting the bottom pad carried to the construction site over the support structure; Casting the concrete into the concrete foundation mold and curing the concrete to form a concrete foundation, a method of constructing a precast concrete column is provided.
Description
The present invention relates to a precast concrete column construction method. More particularly, the present invention relates to a precast concrete column construction method capable of shortening the construction period of precast concrete columns while applying the joint casting between the column segments.
In recent years, higher stiffness and larger size of structures have resulted in higher rigidity and improved workability. The reinforced concrete structure, steel structure and steel reinforced concrete structure, which have been widely used so far, are constructed by directly assembling formwork, reinforcing steel or steel frame on the site and constructing the concrete structure, Can fall.
As an alternative to this, precast concrete structures have been attracting attention as precast concrete structures are manufactured in accordance with strict manufacturing standards at the factory, conveyed and assembled in the field, and concrete is placed on the joints to join the structures.
On the other hand, the column is one of the basic skeletons for the space formation of civil engineering structures such as architecture and bridges, and serves to transmit the upper loads of the roof and the bottom plate to the ground. The columns are very important for constructing the three-dimensional shape of the building or civil structure. When the concrete column is manufactured by the precast method, the joints of the upper and lower columns between the column segments must be precisely matched due to introduction of the prestress, Casting method is used.
The cast casting method of precast concrete columns is such that the upper surface of the first column segment and the lower surface of the second column segment are matched with each other, a mold is formed with the upper surface of the first column segment as the bottom surface, It refers to a method of producing a column segment.
When a precast concrete column is not matched in a joint, when a prestress is introduced, stress concentration occurs locally and cracks or coating concrete may fall off at this part.
In the conventional case, when the concrete column is formed by match casting, the first column segment is delayed until the end of curing after the concrete foundation casting at the construction site. Thereafter, since the first column segment is formed as a match cast on the concrete foundation, and the remaining segments are formed by match casting, there is a problem that the precision of the precast method is poor.
The present invention provides a precast concrete column construction method which can apply the joint casting between the column segments and shorten the precast concrete column construction period.
According to an aspect of the present invention, there is provided a method of constructing a precast concrete column, comprising: preparing a bottom pad for a match pad by laying a concrete for a bottom pad; Forming a mold for a column segment with the top surface of the bottom pad as a bottom surface so as to match cast the upper surface of the bottom pad at a factory, and pouring and curing the concrete to form a column segment; Separating the column segment from the bottom pad and transporting the bottom pad to a construction site; A support structure for supporting the bottom pad at a construction site; installing a concrete foundation die to surround the support structure; Lifting the bottom pad carried to the construction site over the support structure; Casting the concrete into the concrete foundation mold and curing the concrete to form a concrete foundation, a method of constructing a precast concrete column is provided.
The step of fabricating the column segment may include forming an upper surface of the column segment previously fabricated to be mass-cast with the upper surface of the column segment fabricated in the factory as a bottom surface of the column segment mold And pouring and curing the concrete to produce another column segment.
The through hole may be formed at the central portion of the bottom pad. In the case of forming the base of the concrete, the concrete may be installed in the through portion of the bottom pad.
The step of forming the concrete foundation then includes the steps of transporting the column segment to a construction site; The method may further include depositing the column segment on the upper surface of the bottom pad so that the top surface of the bottom pad and the bottom surface of the column segment are matched.
The support structure in the step of installing the concrete foundation formwork further comprises a steel pipe duct which is bent in an arcuate shape so that one end thereof is directed to the upper end of the support structure and the other end is exposed through the side surface of the concrete foundation formwork .
The bottom pad may be formed with a first tensile duct communicating with one end of the steel pipe duct and passing through the top and bottom of the bottom portion pad. The column segment is communicated with the first prestressing duct of the bottom pad, A tension duct may be formed, in which case the forming of the concrete foundation then comprises the steps of conveying the column segment to a construction site; Depositing the column segment on the top surface of the bottom pad such that the top surface of the bottom pad and the bottom surface of the column segment are matched; Disposing a tension member in the steel tube duct, the first tensile duct and the second tensile duct; Applying a prestress to the prestressing material, and fixing both ends of the prestressing material.
The support structure of the step of installing the concrete foundation mold includes at least three support pillars standing upright on the ground in the construction site and being stretchable in the vertical direction and a lateral support bar laterally joined to the support pillars In this case, the step of lifting the upper portion of the support structure may include lifting the lower pad on the upper portion of the support column, and leveling the lower pad by stretching the support column.
The bottom pad may include a height adjusting bolt threaded through an upper surface and a lower surface of the bottom pad, and a height adjusting nut coupled to an end of the height adjusting bolt; And a pad fixing unit including a fixing bolt threaded through an upper surface and a lower surface of the bottom pad, a pressure plate through which the fixing bolt penetrates, and a fixing nut screwed to the fixing bolt.
Wherein the support structure in the step of installing the concrete foundation form includes a support column corresponding to the height adjustment portion and the pad fixture portion and disposed in a standing position on the ground in a construction site, And a transverse support bar.
According to the embodiment of the present invention, it is possible to apply the joint casting between the column segments and shorten the construction period of the precast concrete column.
1 is a flow diagram of a precast concrete column construction method according to an embodiment of the present invention;
FIGS. 2 to 8 are flowcharts of a precast concrete column construction method according to an embodiment of the present invention. FIG.
Figure 9 illustrates a support structure used in a precast concrete column construction method in accordance with an embodiment of the present invention.
FIG. 10 is a view illustrating a height adjusting unit of a bottom pad used in a precast concrete column construction method according to an embodiment of the present invention; FIG.
11 is a view showing a pad fixing portion of a bottom pad used in a precast concrete column construction method according to an embodiment of the present invention.
12 is a modification of a bottom pad used in a precast concrete column construction method according to an embodiment of the present invention.
13 is a modification of the support structure used in the precast concrete column construction method according to an embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: A duplicate description will be omitted.
FIG. 1 is a flowchart of a precast concrete column construction method according to an embodiment of the present invention, and FIGS. 2 to 8 are flowcharts of a precast concrete column construction method according to an embodiment of the present invention. 9 is a view showing a support structure used in a precast concrete column construction method according to an embodiment of the present invention. 10 is a view illustrating a height adjusting unit of a bottom pad used in a precast concrete column construction method according to an embodiment of the present invention. FIG. 11 is a cross- FIG. 2 is a view showing a pad fixing portion of a bottom pad.
1 to 11, the
The method of constructing a precast concrete column according to the present embodiment includes the steps of preparing a bottom pad for a match casting of an upper surface by laying a concrete for a bottom pad, Wow; A mold for a
In the present invention, a precast concrete column means a concrete column that supports an upper structure of a building structure, a bridge supporting a bottom plate of the bridge, and the like.
In this embodiment, a method of constructing a bridge pier by a precast method will be mainly described.
Hereinafter, a precast concrete column construction method will be described with reference to FIGS. 2 to 8. FIG.
First, as shown in FIG. 2, a mold for a bottom pad is installed in a factory, a
The
The upper surface of the
2, the method of forming the
The
3, the top surface of the
Next, as shown in Fig. 4, the
On the other hand, the
Conventionally, after the
6, a
The
At the construction site, piles and the like may be embedded in the ground, and the concrete 38 may be formed thereon. A
In the description of this embodiment, the state of the reinforcing bars is not shown, but it is obvious to those skilled in the art that the reinforcing bars are arranged in the concrete structure.
Referring to FIG. 9, a
The
The
On the other hand, when the position of the
The support posts 52 are disposed at the lower ends of the
The
By using iron steel pipe, it is made into arc shape, so that it can withstand the impact of concrete in the casting process of concrete and maintain arc shape. The
9, one end of the
Once the
Next, the concrete 32 is laid and cured in the
7, the
7, the
The seam side of the
On the other hand, the
Next, prestressing is applied to the
As described above, stress concentration is minimized at the joint surface even if a tension force is introduced by matching at the joint surfaces of the
FIG. 12 is a modification of the
12 shows a modified example of the
13 shows a modified example of the
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
12: bottom pad 14: height adjusting portion
16:
18, 57: height adjusting bolt 19: height adjusting nut
20: Fixing bolt 21: Fixing nut
22:
26: Reinforced Duct 27: Penetration
28: Formwork for column segment 32: Concrete
34: First Column Segment 36: Concrete Foundation Formwork
38: abandoned concrete 40: support structure
42: Steel pipe duct 44: Concrete foundation
46: second column segment 48:
52: support column 54: transverse support bar
56: Circular frame
Claims (9)
Forming a bottom pad for a match casting of the upper surface by laying and curing the concrete;
Forming a mold for a column segment with the top surface of the bottom pad as a bottom surface so as to match cast the upper surface of the bottom pad at a factory, and pouring and curing the concrete to form a column segment;
Separating the column segment from the bottom pad and transporting the bottom pad to a construction site;
A support structure for supporting the bottom pad at a construction site; installing a concrete foundation die to surround the support structure;
Lifting the bottom pad carried to the construction site over the support structure;
Casting and curing the concrete in the concrete foundation mold to form a concrete foundation.
The column segments are manufactured in a plurality of
The step of fabricating the column segment comprises:
Forming a mold for a column segment on the top surface of the column segment previously fabricated so as to be mass-cast with the upper surface of the column segment manufactured in the factory, and pouring and curing the concrete to manufacture another column segment Wherein the pre-cast concrete column construction method comprises the steps of:
A penetrating portion penetrating through the upper and lower surfaces is formed at a central portion of the bottom pad,
Wherein forming the concrete foundation comprises:
Wherein the concrete is poured into the through-hole of the bottom pad.
The step of forming the concrete foundation,
Transporting the column segment to a construction site;
Further comprising the step of mounting the column segment on the top surface of the bottom pad such that the top surface of the bottom pad and the bottom surface of the column segment are matched.
Wherein the support structure in the step of installing the concrete foundation mold comprises:
Further comprising a steel pipe duct which is bent in an arcuate shape so that one end thereof is directed to the upper end of the support structure and the other end is exposed through the side surface of the concrete foundation formwork.
The bottom pad is provided with a first tensile duct communicating with one end of the steel pipe duct and passing through the top and bottom,
Wherein the column segment is formed with a second tensional duct communicating with the first tensional duct of the bottom pad and penetrating the top and bottom,
The step of forming the concrete foundation,
Transporting the column segment to a construction site;
Depositing the column segment on the top surface of the bottom pad such that the top surface of the bottom pad and the bottom surface of the column segment are matched;
Disposing a tension member in the steel tube duct, the first tensile duct and the second tensile duct;
Further comprising the step of applying a prestress to said prestressing material and fixing both ends of said prestressing material.
Wherein the support structure in the step of installing the concrete foundation mold comprises:
At least three supporting pillars standing upright on the ground in the construction site and extending and contracted in the vertical direction and a transverse supporting bar transversely coupled to the supporting pillars,
Wherein the step of lifting the support structure comprises:
And lifting the bottom pad to the top of the support column and leveling the bottom pad by stretching the support column to level the bottom pad.
Wherein the bottom pad comprises:
A height adjusting unit including a height adjusting bolt threaded through the bottom surface of the bottom pad and a height adjusting nut coupled to an end of the height adjusting bolt;
And a pad fixing unit including a fixing bolt threaded through an upper surface and a lower surface of the bottom pad, an acupressure plate through which the fixing bolt penetrates, and a fixing nut screwed into the fixing bolt. Precast Concrete Column Construction Method.
Wherein the support structure in the step of installing the concrete foundation mold comprises:
A support column corresponding to the height adjusting section and the pad fixing section and disposed in a standing position on the ground in a construction site and a transverse support bar transversely coupled with the support column, Column construction method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170108937A KR101980656B1 (en) | 2017-08-28 | 2017-08-28 | Construction method of precast concrete column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170108937A KR101980656B1 (en) | 2017-08-28 | 2017-08-28 | Construction method of precast concrete column |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| KR101954403B1 true KR101954403B1 (en) | 2019-03-05 |
| KR20190023352A KR20190023352A (en) | 2019-03-08 |
| KR101980656B1 KR101980656B1 (en) | 2019-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020170108937A KR101980656B1 (en) | 2017-08-28 | 2017-08-28 | Construction method of precast concrete column |
Country Status (1)
| Country | Link |
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| KR (1) | KR101980656B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102418610B1 (en) * | 2020-10-23 | 2022-07-06 | 현대건설주식회사 | Pillar construction method based on segment plug-in and pillar structure constructed by the same |
| KR102640952B1 (en) * | 2021-09-29 | 2024-02-27 | 현대건설주식회사 | Pillar construction method based on segment plug-in and pillar structure constructed by the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000352108A (en) | 1999-06-10 | 2000-12-19 | Kajima Corp | Precast block construction |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100952207B1 (en) | 2008-05-14 | 2010-04-09 | 중앙대학교 산학협력단 | Connection Structure and Connecting Method between Precast Pier and Foundation |
| KR100971003B1 (en) * | 2009-04-09 | 2010-07-20 | (주)대우건설 | Match-casting concrete form and construction method for constructing assembling-type precast pier using thereof |
| KR100971001B1 (en) * | 2009-05-28 | 2010-07-20 | (주)대우건설 | Prefabricated precast bridge pier for having shear connection fixing plate |
| KR101250385B1 (en) * | 2011-01-24 | 2013-04-05 | 우혁근 | Pier with Vertical Split type Precast Concrete Units and Constructing Method thereof |
-
2017
- 2017-08-28 KR KR1020170108937A patent/KR101980656B1/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000352108A (en) | 1999-06-10 | 2000-12-19 | Kajima Corp | Precast block construction |
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