CN112459354A - Composite column, auxiliary structure for pouring composite column and construction method - Google Patents
Composite column, auxiliary structure for pouring composite column and construction method Download PDFInfo
- Publication number
- CN112459354A CN112459354A CN202011370860.6A CN202011370860A CN112459354A CN 112459354 A CN112459354 A CN 112459354A CN 202011370860 A CN202011370860 A CN 202011370860A CN 112459354 A CN112459354 A CN 112459354A
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- concrete
- shuttle groove
- concrete layer
- steel pipe
- steel
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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
-
- 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
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- 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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G21/0481—Concrete chutes
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses a superposed column, an auxiliary structure for pouring the superposed column and a construction method, and aims to solve the technical problems that the construction quality of the superposed column is poor and the construction is difficult to control in the prior art. The laminated column has: the steel pipe is provided with a pouring opening at a position 0.4-0.8 m away from the floor; the steel plate is welded with the pouring opening; the first concrete layer is filled in the steel pipe; the second concrete layer is filled outside the steel pipe; the intercepting structure is transversely arranged on the beam, and the distance between the center of the intercepting structure and the outer part of the steel pipe is 0.4-0.8 m; and the third concrete layer is filled between the interception structure and the steel pipe.
Description
Technical Field
The invention relates to the technical field of superposed columns, in particular to the technical field of ultrahigh superposed columns, and specifically relates to a superposed column, an auxiliary structure for pouring the superposed column and a construction method.
Background
The steel tube concrete superposed column is a combination form of steel tube concrete and section steel concrete, has the advantages of a steel tube concrete structure and a section steel concrete structure, has high bearing capacity and good earthquake resistance, simultaneously has better fire resistance and corrosion resistance, and is commonly used in high-rise and super high-rise buildings.
The joint of the superposed column and the beam is generally provided with dense reinforcing bars, the construction operation space is limited, when the concrete is poured by adopting a common method, the concrete is inconvenient to vibrate or cannot be vibrated in place, and concrete quality common defects such as honeycombs, pitted surfaces and the like are easy to occur. Especially when the beam column concrete strength grade is different, there is the problem of difficult control in node processing.
Disclosure of Invention
The invention mainly aims to provide a composite column, an auxiliary structure for pouring the composite column and a construction method, and aims to solve the technical problems that the construction quality of the composite column is poor and the composite column is difficult to control in the prior art.
In order to achieve the above object, the present invention first provides a composite post. The laminated column has:
the steel pipe is provided with a pouring opening at a position 0.4-0.8 m away from the floor;
the steel plate is welded with the pouring opening;
the first concrete layer is filled in the steel pipe;
the second concrete layer is filled outside the steel pipe;
the intercepting structure is transversely arranged on the beam, and the distance between the center of the intercepting structure and the outer part of the steel pipe is 0.4-0.8 m;
and the third concrete layer is filled between the interception structure and the steel pipe.
Furthermore, the pouring opening is circular, and the diameter is preferably 200-250 mm.
Further, at least the first concrete layer and the third concrete layer of the first concrete layer, the second concrete layer and the third concrete layer comprise self-compacting concrete; when first concrete layer, second concrete layer and third concrete layer all included self-compaction concrete, the superimposed column intensity was high, and can reduce technology complexity.
Furthermore, the water-to-gel ratio of the self-compacting concrete is preferably less than or equal to 0.45, and the using amount of the cementing material is preferably 400-550 kg/m3The slump expansion degree is preferably 550-755 mm.
Further, a cement mortar layer is filled between the upper and lower first concrete layers; the thickness of the cement mortar layer is preferably 5-10 mm. This can reduce segregation of the free-falling self-compacting concrete. It is preferable that the cement mortar and the first concrete layer have the same strength grade, and the segregation phenomenon can be effectively prevented.
Further, the intercepting structure comprises a fast and easy closing net and/or a steel wire net; the side length of meshes of the steel wire mesh is preferably 1-3 mm; the wire mesh is preferably a galvanized wire mesh. When the intercepting structure simultaneously has the fast and easy closing net and the steel wire net, the intercepting effect is best. Wherein, the fast and easy closing net generally refers to a non-dismantling template net, which comprises two parts of a continuously raised V-shaped net frame and a steel net surface.
Further, the intercepting structure is obliquely arranged; preferably, the upper end of the intercepting structure inclines towards the steel pipe and forms an included angle of 30-60 degrees with the horizontal plane.
In order to achieve the above object, the present invention secondly provides an auxiliary structure for casting the above-mentioned composite post. This auxiliary structure includes:
one end of the shuttle groove extends into the pouring opening, and the other end of the shuttle groove is connected with the concrete conveying pipe;
and the bracket is used for supporting the shuttle groove and enabling the shuttle groove to be placed obliquely downwards.
Further, the upper surface of the shuttle groove has openings distributed along the axial direction thereof; therefore, the flowing condition of the self-compacting concrete can be conveniently observed by constructors.
Further, the diameter of the cross section of the shuttle groove is gradually reduced from top to bottom; therefore, the shuttle groove can be effectively prevented from falling into the steel pipe while the concrete conveying pipe can be effectively connected.
Further, the diameter of the upper end of the shuttle groove is preferably 18-22 cm; the diameter of the lower end of the shuttle groove is preferably 8-12 cm; the length of the shuttle groove is preferably 1.2-1.8 m.
Further, the support is provided with a first supporting beam for supporting the upper end of the shuttle groove, the height of the first supporting beam is 1-1.4 m, and the width of the first supporting beam is 40-60 cm;
further, the support is provided with a second supporting beam for supporting the lower end of the shuttle groove, the height of the second supporting beam is 0.6-1 m, and the width of the second supporting beam is 20-40 cm;
further, the lower surface of the shuttle groove is provided with a bulge matched with the first supporting beam and/or the second supporting beam. Therefore, the shuttle groove can keep a higher inclination angle and can not slide off.
In order to achieve the purpose, the invention further provides a construction method of the composite column. The construction method comprises the following steps:
pouring concrete into the steel pipe by adopting the auxiliary equipment to obtain a first concrete layer;
welding the steel plate with a pouring opening;
installing an interception structure and pouring a third concrete layer;
and pouring a second concrete layer.
The composite column, the auxiliary structure for pouring the composite column and the construction method have the following advantages:
(1) when adopting auxiliary structure and pouring mouthful matched with mode to pour inside the steel pipe, have easy operation, efficient advantage such as high.
(2) When adopting the interception structure to carry out the interception to the concrete of different intensity grades, not only simple to operate has excellent separation effect moreover.
(3) The self-compacting concrete is very suitable for the concrete pouring requirement of the ultrahigh laminated column, and the obtained laminated column is obviously superior to the laminated column obtained by common concrete.
Additional aspects and advantages of embodiments of the inventions provided herein will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of the inventions provided herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the embodiments of the invention and are not intended to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a laminated column according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a shuttle groove in an auxiliary structure for casting a superposed column according to embodiment 1 of the present invention.
Fig. 3 is a perspective view of a bracket in an auxiliary structure for casting a composite column according to embodiment 1 of the present invention.
Fig. 4 is a top view of a support in an auxiliary structure for casting a composite post according to embodiment 1 of the present invention.
The relevant references in the above figures are:
100: a steel pipe;
200: a steel plate;
310: a first concrete layer;
320: a second concrete layer;
330: a third concrete layer;
410: a fast and easy closing net;
420: steel wire mesh;
500: a cement mortar layer;
600: a shuttle groove;
610: an opening;
620: a protrusion;
700: a support;
710: a first support beam;
720: a second support beam.
Detailed Description
The embodiments of the invention provided in the present specification will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art will be able to implement the embodiments of the invention provided in this specification based on these descriptions. Before the embodiments of the invention provided in this specification are explained with reference to the drawings, it is to be noted that:
the technical solutions and the technical features provided in the embodiments of the invention provided in the present specification in each part including the following description may be combined with each other without conflict.
Furthermore, the embodiments of the invention provided in this specification and referred to in the following description are generally only a subset of the embodiments of the invention provided in this specification and not all of them, so that all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the invention provided in this specification and referred to in the claims of the invention provided in this specification shall fall within the scope of the protection of the embodiments of the invention provided in this specification.
With respect to the terms and units in the examples of the invention provided in this specification: the terms "comprising," "including," "having," and any variations thereof in the description and claims and associated parts of the embodiments of the invention provided in this specification are intended to cover non-exclusive inclusions. In addition, other related terms and units in the embodiments of the invention provided by the specification can be reasonably interpreted based on the related contents of the embodiments of the invention provided by the specification.
Example 1
Fig. 1 is a schematic structural view of the composite column of the present embodiment. Fig. 2 is a schematic structural diagram of a shuttle groove in the auxiliary structure for casting the superposed column according to the embodiment. Fig. 3 is a perspective view of a bracket in the auxiliary structure for casting the composite column according to the embodiment. Fig. 4 is a top view of a bracket in the auxiliary structure for casting the composite post according to the embodiment.
As shown in fig. 1, the laminated column has a steel pipe 100, a steel plate 200, a first concrete layer 310, a second concrete layer 320, a intercepting structure, and a third concrete layer 330; wherein the first concrete layer 310 is filled in the steel pipe 100; the second concrete layer 320 is filled outside the steel pipe 100; the intercepting structure is horizontally disposed on the beam, and the third concrete layer 330 is filled between the intercepting structure and the steel pipe 100.
A pouring opening is formed in the position, 0.6m away from the floor, of the steel pipe 100; the pouring opening is circular, and the diameter of the pouring opening is 220 mm.
The steel pipe 100 has anchor rods uniformly distributed outside and extending into the second concrete layer 320.
The steel plate 200 is welded to the pouring opening.
The first concrete layer 310, the second concrete layer 320 and the third concrete layer 330 are all made of self-compacting concrete.
The water-cement ratio of the self-compacting concrete is less than or equal to 0.45, the using amount of the cementing material is 400-550 kg/m3, and the slump expansion degree is 550-755 mm.
The self-compacting concrete is prepared by using portland cement or ordinary portland cement as a main body and using minerals such as fly ash, granulated blast furnace slag powder, silicon powder and the like as admixtures. The coarse aggregate is continuously graded or matched and matched with 2 or more single particle sizes, the maximum nominal particle size is not more than 10mm, and the round aggregate containing no needles or less needle-shaped particles is selected as far as possible.
The distance between the center of the intercepting structure and the outside of the steel pipe 100 is 0.5 m.
The intercepting structure includes a fast and easy closing net 410 and a steel wire net 420, wherein the fast and easy closing net 410 is located at one side adjacent to the steel pipe 100.
The side length of the meshes of the steel wire mesh 420 is 2 mm; the steel wire mesh 420 is a galvanized steel wire mesh 420.
The interception structure is obliquely placed, and the upper end of the interception structure inclines towards the steel pipe 100 and forms an included angle of 45 degrees with the horizontal plane.
A cement mortar layer 500 is filled between the upper and lower sections of the first concrete layers 310; the thickness of the cement mortar layer 500 is 5-10 mm.
As shown in fig. 1 to 4, the auxiliary structure for casting the superposed column includes a shuttle groove 600 and a bracket 700; one end of the shuttle groove 600 extends into the pouring opening, and the other end of the shuttle groove is connected with a concrete conveying pipe; the bracket 700 serves to support the shuttle groove 600 and to place the shuttle groove 600 obliquely downward.
The upper surface of the shuttle groove 600 has openings 610 distributed along the axial direction thereof.
The diameter of the cross section of the shuttle groove 600 is gradually reduced from top to bottom, the diameter of the upper end of the shuttle groove 600 is 20cm, and the diameter of the lower end of the shuttle groove 600 is 10 cm.
The shuttle groove 600 has a length of 1.5 m.
The bracket 700 has a first support beam 710 supporting the upper end of the shuttle groove 600, and the first support beam 710 has a height of 1.2m and a width of 50 cm.
The bracket 700 has a second support beam 720 supporting the lower end of the shuttle groove 600, and the second support beam 720 has a height of 0.8m and a width of 30 cm.
The lower surface of the shuttle groove 600 is provided with a protrusion 620 engaged with the first support beam 710 and the second support beam 720.
The construction method of the composite column shown in fig. 1 comprises the following steps:
adopting the auxiliary equipment shown in fig. 2-4, firstly pouring cement mortar into the steel pipe 100 to obtain a cement mortar layer 500, and then pouring self-compacting concrete into the steel pipe 100 to obtain a first concrete layer 310;
welding the steel plate 200 with a pouring opening;
installing an interception structure and pouring a third concrete layer 330;
and erecting a formwork and pouring a second concrete layer 320.
The contents of the embodiments of the invention provided in the present specification are explained above. Those skilled in the art will be able to implement the embodiments of the invention provided in this specification based on these descriptions. Based on the above description of the embodiments of the invention provided in this specification, all other preferred embodiments and examples obtained by those skilled in the art without any inventive work should fall within the scope of the protection of the embodiments of the invention provided in this specification.
Claims (10)
1. A laminated column, comprising: has the advantages of
The steel pipe (100), a pouring opening is formed in the position, 0.4-0.8 m away from the floor, of the steel pipe (100);
the steel plate (200), the steel plate (200) is welded with the pouring opening;
a first concrete layer (310), wherein the first concrete layer (310) is filled in the steel pipe (100);
a second concrete layer (320), wherein the second concrete layer (320) is filled outside the steel pipe (100);
the intercepting structure is transversely arranged on the beam, and the distance between the center of the intercepting structure and the outside of the steel pipe (100) is 0.4-0.8 m;
and a third concrete layer (330), wherein the third concrete layer (330) is filled between the intercepting structure and the steel pipe (100).
2. The composite post of claim 1, wherein: the pouring opening is circular, and the diameter is preferably 200-250 mm.
3. The composite post of claim 1, wherein: at least the first (310) and third (330) concrete layers of the first (310), second (320) and third (330) concrete layers comprise self-compacting concrete; the water-cement ratio of the self-compacting concrete is preferably less than or equal to 0.45, the using amount of a cementing material is preferably 400-550 kg/m3, and the slump expansion degree is preferably 550-755 mm.
4. The composite post of claim 1, wherein: a cement mortar layer (500) is filled between the upper and lower sections of the first concrete layers (310); the thickness of the cement mortar layer (500) is preferably 5-10 mm.
5. The composite post of claim 1, wherein: the intercepting structure comprises a quick and easy closing net (410) and/or a steel wire net (420); the side length of meshes of the steel wire mesh (420) is preferably 1-3 mm; the steel mesh (420) is preferably a galvanized steel mesh (420).
6. The composite post of claim 1, wherein: the intercepting structure is obliquely arranged; preferably, the upper end of the intercepting structure inclines towards the steel pipe (100) and forms an included angle of 30-60 degrees with the horizontal plane.
7. Auxiliary structure for casting of a composite post according to any of claims 1-6, characterized in that: comprises that
One end of the shuttle groove (600) extends into the pouring opening, and the other end of the shuttle groove (600) is connected with the concrete conveying pipe;
and a bracket (700) for supporting the shuttle groove (600) and placing the shuttle groove (600) obliquely downward.
8. The auxiliary structure of claim 7, wherein: the upper surface of the shuttle groove (600) is provided with openings (610) distributed along the axial direction thereof; the diameter of the cross section of the shuttle groove (600) is gradually reduced from top to bottom; the diameter of the upper end of the shuttle groove (600) is preferably 18-22 cm; the diameter of the lower end of the shuttle groove (600) is preferably 8-12 cm; the length of the shuttle groove (600) is preferably 1.2-1.8 m.
9. The auxiliary structure of claim 7, wherein: the support (700) is provided with a first support beam (710) for supporting the upper end of the shuttle groove (600), and the height of the first support beam (710) is 1-1.4 m, and the width is 40-60 cm; the bracket (700) is provided with a second supporting beam (720) for supporting the lower end of the shuttle groove (600), the height of the second supporting beam (720) is 0.6-1 m, and the width is 20-40 cm; the lower surface of the shuttle groove (600) is provided with a bulge (620) matched with the first supporting beam (710) and/or the second supporting beam (720).
10. The construction method of a composite post according to any one of claims 1 to 6, comprising the steps of:
-casting concrete into said steel duct (100) using the auxiliary device according to any one of claims 7 to 9, obtaining a first concrete layer (310);
welding the steel plate (200) with a pouring opening;
installing an interception structure and pouring a third concrete layer (330);
and pouring a second concrete layer (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011370860.6A CN112459354A (en) | 2020-11-30 | 2020-11-30 | Composite column, auxiliary structure for pouring composite column and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011370860.6A CN112459354A (en) | 2020-11-30 | 2020-11-30 | Composite column, auxiliary structure for pouring composite column and construction method |
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| CN112459354A true CN112459354A (en) | 2021-03-09 |
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| CN202011370860.6A Pending CN112459354A (en) | 2020-11-30 | 2020-11-30 | Composite column, auxiliary structure for pouring composite column and construction method |
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2020
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