CN112538932A - Construction method of vertical steel bar of reverse construction structural column and fixed template - Google Patents
Construction method of vertical steel bar of reverse construction structural column and fixed template Download PDFInfo
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- CN112538932A CN112538932A CN202011324645.2A CN202011324645A CN112538932A CN 112538932 A CN112538932 A CN 112538932A CN 202011324645 A CN202011324645 A CN 202011324645A CN 112538932 A CN112538932 A CN 112538932A
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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
- E04C5/208—Spacers especially adapted for cylindrical reinforcing cages
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0071—Wood
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a construction method and a fixed template for a vertical steel bar of a reverse construction column, wherein the construction method comprises the following steps: aligning and distributing the lower ends of the lower vertical steel bars of the upper layer, connecting the lower ends of the lower vertical steel bars of the upper layer with the upper node sleeve connector in a threaded manner, extending the lower ends of the lower vertical steel bars to a first preset elevation, and arranging a first fixed template on the upper node sleeve connector; continuing downward excavation, aligning and distributing the upper ends of the upper vertical steel bars of the current layer, connecting the upper vertical steel bars to the upper node sleeve connector in a threaded manner, and non-aligning and distributing the lower ends of the upper vertical steel bars of the current layer; excavating to a lower floor slab, continuously excavating downwards to a third preset elevation, aligning and distributing the lower ends of the lower vertical steel bars of the current floor, connecting the lower vertical steel bars with the lower node sleeve connector in a threaded manner, and extending to the third preset elevation; and arranging a second fixed template on the lower node sleeve connector. The invention can accurately position the vertical steel bar passing through the floor slab, and eliminates potential safety hazards caused by excessive transitional excavation.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method and a fixed template for a vertical steel bar of a reverse construction structural column.
Background
In the technical field of building engineering, in the construction of a reverse construction structural column, a steel pipe concrete column is firstly constructed, then vertical reinforcing steel bars are arranged on the periphery of the steel pipe concrete column, and finally concrete is poured from a basement bottom plate to a basement top plate to form the structural column. The construction method of the vertical steel bar of the reverse construction structural column in the prior art comprises the following steps: when the excavation is carried out downwards to the beam bottom elevation of the upper floor in the foundation pit, the upper vertical steel bars located on the layer where the upper floor is located and arranged around the concrete-filled steel tube column need to penetrate through the upper floor and reserve towards the lower layer, and the upper vertical steel bars reserved downwards need to be fixed so as to prevent vertical deviation and cannot be connected with the lower vertical steel bars arranged on the lower layer. In the prior art, the reserved upper vertical steel bars are inserted into the sand body for fixing through backfilled sand after a certain depth is overexcited below the floor of the upper floor. And then continuing to excavate the beam bottom elevation to the lower floor slab, and arranging the lower vertical steel bars and the reserved upper vertical steel bars on the layer of the lower floor slab around the concrete-filled steel tubular column to be connected through a threaded sleeve so as to complete the arrangement of the vertical steel bars on the layer of the lower floor slab. Because the reserved length of the upper vertical steel bar reserved on the lower floor is uncertain, the lower floor needs to be overetched to a certain depth, and considering that the excavation depth of the earth constructed by the reverse construction method is limited, the transitional overetching can bring hidden troubles to the safety of the reverse construction operation.
Disclosure of Invention
The invention aims to solve the technical problem of providing a construction method of a vertical steel bar of a reverse construction column and a fixed template so as to position the vertical steel bar reserved through a floor slab.
In order to solve the technical problem, the invention provides a technical scheme that: a construction method of a vertical steel bar of a reverse construction column comprises the following steps:
the method comprises the steps that the steel pipe concrete column is excavated downwards to an upper floor slab, the steel pipe concrete column is excavated downwards continuously to a first preset elevation along the beam bottom elevation of the upper floor slab, the lower ends of the lower vertical steel bars of the upper floor slab are distributed in an aligned mode, are connected with a node sleeve connector in a threaded mode and then penetrate through the beam bottom elevation of the upper floor slab to extend to the first preset elevation, and a first fixed template is arranged on the node sleeve connector to be used for positioning the verticality of the lower vertical steel bars of the upper floor slab;
continuously excavating downwards along the steel pipe concrete column to a second preset elevation, configuring upper vertical steel bars of the current layer around the steel pipe concrete column, aligning and distributing the upper ends of the upper vertical steel bars of the current layer, connecting the upper vertical steel bars to the upper node sleeve connector in a threaded manner, and aligning and distributing the lower ends of the upper vertical steel bars of the current layer;
continuously excavating downwards to a lower floor slab along the steel pipe concrete column, continuously excavating downwards to a third preset elevation along the beam bottom elevation of the lower floor slab, configuring the lower vertical steel bars of the current layer around the steel pipe concrete column, distributing the upper ends of the lower vertical steel bars of the current layer in a non-aligned mode, and connecting the upper ends of the upper vertical steel bars of the current layer with the upper ends of the lower vertical steel bars in a positive and negative direction threaded mode through a middle node sleeve connector; the lower ends of the lower vertical steel bars of the current floor are distributed in an aligned mode, and penetrate through the beam bottom elevation of the lower floor slab to extend to a third preset elevation after being connected with the lower node sleeve connector in a threaded mode; and arranging a second fixed template on the lower node sleeve connector so as to be used for positioning the verticality of the lower vertical steel bar of the current layer.
Further, according to the construction method of the vertical steel bar of the reverse construction structural column, the first fixed template and the second fixed template respectively comprise annular templates distributed around the steel pipe concrete column, and through holes matched with the vertical distribution positions of the corresponding sleeve connectors are formed in the annular templates.
Further, according to the construction method of the vertical steel bar of the reverse construction structural column, the middle node sleeve connector is in threaded connection with the lower end of the upper vertical steel bar of the current layer, the upper end of the lower vertical steel bar of the current layer is aligned with the lower end of the upper vertical steel bar of the current layer, and the middle node sleeve connector is unscrewed in the opposite direction to enable the upper end of the lower vertical steel bar of the current layer to be in threaded connection with the lower end of the upper vertical steel bar in the positive and negative directions.
Further, according to the construction method of the vertical steel bar of the reverse construction structural column, the middle node sleeve connector is in threaded connection below the upper end of the lower vertical steel bar of the current layer, the lower end of the upper vertical steel bar of the current layer is aligned with the upper end of the lower vertical steel bar of the current layer, and the middle node sleeve connector is unscrewed in the opposite direction to enable the lower end of the upper vertical steel bar of the current layer to be in threaded connection with the upper end of the lower vertical steel bar in the positive and negative directions.
Further, the construction method of the vertical steel bar of the reverse construction structural column provided by the invention is used for constructing the beam template, the column cap template and the partial structural column template of the floor slab through the formwork during the construction of the lower vertical steel bar.
Further, the construction method of the vertical steel bar of the reverse construction column provided by the invention supports the formwork on the cushion layer, and the cushion layer is arranged at a preset elevation below the beam node of the floor slab.
Compared with the prior art, the construction method of the vertical steel bar of the reverse construction structural column has the following beneficial effects: the lower extreme of lower part vertical reinforcement aligns the distribution and threaded connection sleeve connector, rather than non-alignment distribution, then plugs into the ware through the solid fixed die plate setting at the sleeve to the straightness that hangs down to lower part vertical reinforcement carries out accurate location, then lower part vertical reinforcement is fixed by the solid fixed die plate, thereby prevents that the straightness that hangs down of lower part vertical reinforcement from appearing the deviation and can't with the defect of the upper portion bar connection of below. The lower ends of the lower vertical steel bars are not distributed in an aligned mode, the lower ends of the lower vertical steel bars are positioned inaccurately in a sand backfill mode, and potential safety hazards caused by transition over excavation when the lower vertical steel bars are vertically arranged are overcome.
In order to solve the above technical problems, another technical solution provided by the present invention is: the utility model provides a fixed die plate of vertical reinforcing bar of contrary structure post of doing, is including the annular template that encircles the distribution of steel core concrete column, be provided with on the annular template with lower part vertical reinforcing bar vertical distribution position assorted through-hole.
Further, according to the fixed formwork of the vertical steel bar of the reverse construction column, the annular formwork is a steel formwork or a wood formwork.
Compared with the prior art, the fixing template for the vertical steel bars of the reverse construction column has the following beneficial effects: insert among the through-hole of fixed die plate with lower part vertical reinforcement to with the fixed die plate setting on lower part vertical reinforcement, thereby carry out accurate location to lower part vertical reinforcement, prevent that it from hanging down straightness and in the deviation appearing, improved the connection precision of lower part vertical reinforcement rather than connecting at upper portion vertical reinforcement, overcome among the prior art lower part vertical reinforcement adopt fill back sand mode location inaccurate and overcome the potential safety hazard that the transition that produces when hanging down straightness of lower part vertical reinforcement overexcasts and leads to.
Drawings
FIG. 1 is a schematic structural view of a connection state of vertical reinforcing bars excavated to a first predetermined elevation;
FIG. 2 is a schematic top view of the connection of vertical reinforcing bars excavated to a first predetermined elevation;
FIG. 3 is a schematic view showing the connection state of vertical reinforcing bars excavated to a second predetermined elevation;
FIG. 4 is a schematic view showing the connection state of vertical reinforcing bars excavated to a third predetermined elevation;
fig. 5 to 6 are schematic structural diagrams illustrating a connection process of the upper vertical steel bar, the lower vertical steel bar and the middle node sleeve connector;
FIG. 7 is a schematic view of the construction of a formwork over the lower vertical rebars through the formwork;
FIG. 8 is a schematic top view of the first stationary platen;
shown in the figure:
110. a steel pipe concrete column, 121, upper vertical steel bars, 122, lower vertical steel bars, 131, an upper node sleeve connector, 132, a middle node sleeve connector, 133, a lower node sleeve connector, 141, a first fixed template, 1411, an annular template, 1412, a through hole, 142 and a second fixed template;
200. floor slab, 201, floor slab beam top elevation, 202, floor slab beam bottom elevation, 210, upper floor slab, 211 and upper floor slab beam top elevation; 212. the beam bottom elevation of the upper floor slab is 220, the beam top elevation of the lower floor slab is 221, and the beam bottom elevation of the lower floor slab is 222;
310. a first predetermined elevation; 320. a second predetermined altitude, 330, a third predetermined altitude;
400. a cushion layer;
500. a mold frame;
610. floor beam bottom formwork 620, column cap formwork 630 and structural column formwork.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 1 to 6, an embodiment of the present invention provides a method for constructing a vertical steel bar of a reverse structural column, which includes the following steps:
step 701, referring to fig. 1 to 2, the steel pipe concrete column 110 is excavated downwards to the upper floor 210, the steel pipe concrete column is excavated downwards to a first predetermined elevation 310 along a beam bottom elevation 212 of the upper floor 210, the lower ends of the lower vertical steel bars 122 of the upper floor are aligned and distributed, screwed with the upper node sleeve connector 131, and then pass through the beam bottom elevation 212 of the upper floor 210 to extend to the first predetermined elevation 310, and the first fixed formwork 141 is disposed on the upper node sleeve connector 131 to position the perpendicularity of the lower vertical steel bars 122 of the upper floor. Wherein the beam top elevation 211 of the upper floor 210 can be located simultaneously.
Step 702, referring to fig. 3 to 6, the steel pipe concrete column 110 is excavated downwards to a second predetermined elevation 320, the upper vertical steel bars 121 of the current layer are arranged around the steel pipe concrete column 110, the upper ends of the upper vertical steel bars 121 of the current layer are distributed in an aligned manner and are connected to the upper node sleeve connector 131 in a threaded manner, and the lower ends of the upper vertical steel bars 121 of the current layer are distributed in an unaligned manner.
Step 703, referring to fig. 4, continuing to excavate downwards to the lower floor slab 220 along the steel pipe concrete column 110, continuing to excavate downwards to the third predetermined elevation 330 along the beam bottom elevation 212 of the lower floor slab 220, configuring the lower vertical steel bars 122 of the current layer around the steel pipe concrete column 110, distributing the upper ends of the lower vertical steel bars 122 of the current layer in a non-aligned manner, and connecting the upper ends of the upper vertical steel bars 121 of the current layer with the upper ends of the lower vertical steel bars 122 in a threaded manner in the forward and reverse directions through the middle joint sleeve connector 132; after the lower ends of the lower vertical steel bars 122 of the current floor are distributed in an aligned manner and are in threaded connection with the lower node sleeve connectors 133, the lower vertical steel bars extend to a third preset elevation 330 through the beam bottom elevation 212 of the lower floor slab 220; a second fixed template 142 is placed on the lower node sleeve connector 133 for locating the perpendicularity of the lower vertical rebars 122 of the current level.
Referring to fig. 2 and 8, in the method for constructing vertical steel bars of a reverse-acting structural column according to the embodiment of the present invention, the first fixed form 141 includes annular forms 1411 distributed around the steel pipe concrete column 110, and the annular forms 1411 are provided with through holes 1412 matched with the vertical distribution positions of the corresponding sleeve connectors. The second fixed die plate 142 has the same structure as the second fixed die plate 141. The lower end of the lower vertical rebar 122 is connected to a sleeve connector that is inserted into the through hole 1412 to accurately locate the perpendicularity of the lower vertical rebar 122.
Referring to fig. 5 to 6, in the method for constructing vertical steel bars of a reverse structural column according to the embodiment of the present invention, the intermediate node sleeve connector 132 is screwed to the lower end of the upper vertical steel bar 121 on the current layer, the upper end of the lower vertical steel bar 122 on the current layer is aligned with the lower end of the upper vertical steel bar 121 on the current layer, and the intermediate node sleeve connector 132 is unscrewed in the opposite direction to screw-connect the upper end of the lower vertical steel bar 122 on the current layer with the lower end of the upper vertical steel bar 121 in the forward and reverse directions. In this manner, the intermediate node sleeve connector 131 is first disposed at the lower end of the upper vertical reinforcement bar 121 with the convenience of connection from top to bottom.
In the method for constructing the vertical steel bars of the reverse-acting structural column according to the embodiment of the present invention, the intermediate-node sleeve connector 132 is screwed below the upper end of the lower vertical steel bar 122 of the current layer, the lower end of the upper vertical steel bar 121 of the current layer is aligned with the upper end of the lower vertical steel bar 122 of the current layer, and the intermediate-node sleeve connector 132 is unscrewed in the opposite direction to screw-connect the lower end of the upper vertical steel bar 121 of the current layer with the upper end of the lower vertical steel bar 122 in the forward and reverse directions. In this manner, the middle joint sleeve connector 131 is first disposed at the upper end of the lower vertical reinforcement 122 and may be connected to the upper vertical reinforcement 121 from the bottom up.
Referring to fig. 7, in order to improve convenience of the construction of the complete structural column, in the method for constructing the vertical reinforcing bars of the reverse structural column according to the embodiment of the present invention, when the lower vertical reinforcing bars 122 are constructed, the beam formwork 610, the cap formwork 620, and the partial structural column formwork 630 of the floor slab are constructed through the formwork 500.
Referring to fig. 7, in the method for constructing a vertical reinforcing bar of a reverse structural column according to the embodiment of the present invention, a formwork 500 is supported on a bedding layer 400, and the bedding layer 400 is disposed at a predetermined elevation below a beam node of a floor slab 200. At this time, the cushion layer 400 may also be used for a positioning fitting setting for positioning the lower vertical reinforcing bars 120.
According to the construction method of the vertical steel bars of the reverse construction structural column, the lower ends of the lower vertical steel bars 122 are distributed in an aligned mode and are connected with the sleeve connectors in a threaded mode instead of in a non-aligned mode, then the lower vertical steel bars 122 are fixed by the fixed templates which are arranged on the sleeve connectors to accurately position the verticality of the lower vertical steel bars 122, and therefore the defect that the verticality of the lower vertical steel bars 122 cannot be connected with the lower upper steel bars due to deviation is overcome. The lower ends of the lower vertical steel bars 122 are not distributed in an aligned mode, the lower ends of the lower vertical steel bars 122 are positioned inaccurately in a sand backfill mode, and potential safety hazards caused by transition over excavation when the lower vertical steel bars 122 are verticality are overcome.
Referring to fig. 2 and 8, an embodiment of the present invention further provides a fixing form 141 for vertical reinforcements of a reverse structural column, including an annular form 1411 distributed around a steel core concrete column 110, where the annular form 1411 is provided with through holes 1412 matched with the vertical distribution positions of the lower vertical reinforcements 122. Wherein the annular template can be a steel template or a wood template.
According to the fixing template 141 of the vertical steel bar of the reverse-acting structural column, provided by the embodiment of the invention, the lower vertical steel bar 122 is inserted into the through hole 1412 of the fixing template 141, and the fixing template 141 is arranged on the lower vertical steel bar 122, so that the lower vertical steel bar 122 is accurately positioned, the deviation of the verticality is prevented, the connection precision of the lower vertical steel bar 122 and the upper vertical steel bar 121 connected with the lower vertical steel bar is improved, the inaccurate positioning of the lower vertical steel bar 122 in a sand backfilling mode in the prior art is overcome, and the potential safety hazard caused by excessive excavation transition generated when the lower vertical steel bar 122 is vertically vertical is overcome.
The present invention is not limited to the above-described embodiments, and various changes and modifications made within the scope of the present invention are within the scope of the present invention.
Claims (8)
1. A construction method of a vertical steel bar of a reverse construction structural column is characterized by comprising the following steps:
the method comprises the steps that the steel pipe concrete column is excavated downwards to an upper floor slab, the steel pipe concrete column is excavated downwards continuously to a first preset elevation along the beam bottom elevation of the upper floor slab, the lower ends of the lower vertical steel bars of the upper floor slab are distributed in an aligned mode, are connected with a node sleeve connector in a threaded mode and then penetrate through the beam bottom elevation of the upper floor slab to extend to the first preset elevation, and a first fixed template is arranged on the node sleeve connector to be used for positioning the verticality of the lower vertical steel bars of the upper floor slab;
continuously excavating downwards along the steel pipe concrete column to a second preset elevation, configuring upper vertical steel bars of the current layer around the steel pipe concrete column, aligning and distributing the upper ends of the upper vertical steel bars of the current layer, connecting the upper vertical steel bars to the upper node sleeve connector in a threaded manner, and aligning and distributing the lower ends of the upper vertical steel bars of the current layer;
continuously excavating downwards to a lower floor slab along the steel pipe concrete column, continuously excavating downwards to a third preset elevation along the beam bottom elevation of the lower floor slab, configuring the lower vertical steel bars of the current layer around the steel pipe concrete column, distributing the upper ends of the lower vertical steel bars of the current layer in a non-aligned mode, and connecting the upper ends of the upper vertical steel bars of the current layer with the upper ends of the lower vertical steel bars in a positive and negative direction threaded mode through a middle node sleeve connector; the lower ends of the lower vertical steel bars of the current floor are distributed in an aligned mode, and penetrate through the beam bottom elevation of the lower floor slab to extend to a third preset elevation after being connected with the lower node sleeve connector in a threaded mode; and arranging a second fixed template on the lower node sleeve connector so as to be used for positioning the verticality of the lower vertical steel bar of the current layer.
2. The construction method of the vertical steel bar of the reverse construction column according to claim 1, wherein the first fixed formwork and the second fixed formwork each comprise an annular formwork distributed around the steel pipe concrete column, and the annular formwork is provided with through holes matched with the vertical distribution positions of the corresponding sleeve connectors.
3. The method of claim 1, wherein the intermediate joint sleeve connector is screwed to a position above a lower end of the upper vertical reinforcement of the current storey, an upper end of the lower vertical reinforcement of the current storey is aligned with a lower end of the upper vertical reinforcement of the current storey, and the intermediate joint sleeve connector is unscrewed in the opposite direction to screw-connect the upper end of the lower vertical reinforcement of the current storey with the lower end of the upper vertical reinforcement in the opposite direction.
4. The method of claim 1, wherein the intermediate joint sleeve connector is screwed below the upper end of the lower vertical reinforcement of the current layer, the lower end of the upper vertical reinforcement of the current layer is aligned with the upper end of the lower vertical reinforcement of the current layer, and the intermediate joint sleeve connector is unscrewed in the opposite direction to screw-connect the lower end of the upper vertical reinforcement of the current layer with the upper end of the lower vertical reinforcement in the opposite direction.
5. The method of constructing vertical reinforcing bars of a reverse construction column according to claim 1, wherein the construction of the beam formwork, the cap formwork and the partial structure column formwork of the floor slab is performed through a formwork at the time of the construction of the lower vertical reinforcing bars.
6. The method of constructing a vertical reinforcing bar of a reverse construction column according to claim 5, wherein the formwork is supported on a bedding layer, and the bedding layer is disposed at a predetermined elevation below a beam node of the floor slab.
7. The utility model provides a fixed die plate of vertical reinforcing bar of contrary structure post of doing, its characterized in that, is including the annular template that encircles the distribution of steel core concrete column, be provided with on the annular template with lower part vertical reinforcing bar vertical distribution position assorted through-hole.
8. The fixed form of vertical rebar of a reverse construction column according to claim 7, wherein the annular form is a steel form or a wooden form.
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| CN202011324645.2A CN112538932B (en) | 2020-11-24 | 2020-11-24 | Construction method of vertical steel bar of reverse construction structural column and fixed template |
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| CN202011324645.2A CN112538932B (en) | 2020-11-24 | 2020-11-24 | Construction method of vertical steel bar of reverse construction structural column and fixed template |
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| CN112538932B CN112538932B (en) | 2022-07-01 |
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| KR100775767B1 (en) * | 2006-08-14 | 2007-11-12 | 깨뱉시스템주식회사 | Top-down method using the vertical steel bar for the src column |
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| CN210315663U (en) * | 2019-04-30 | 2020-04-14 | 中建八局第三建设有限公司 | A reinforcing bar location aluminum plate that is arranged in reverse construction method beam column to hang node down |
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| CN112538932B (en) | 2022-07-01 |
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