CN112681612A - High-strength steel concrete cross-shaped column partially prefabricated and assembled - Google Patents

High-strength steel concrete cross-shaped column partially prefabricated and assembled Download PDF

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Publication number
CN112681612A
CN112681612A CN202011587905.5A CN202011587905A CN112681612A CN 112681612 A CN112681612 A CN 112681612A CN 202011587905 A CN202011587905 A CN 202011587905A CN 112681612 A CN112681612 A CN 112681612A
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China
Prior art keywords
steel
cross
concrete
shaped
strength
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Pending
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CN202011587905.5A
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Chinese (zh)
Inventor
刘祖强
王肖男
薛建阳
岳仍伟
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Xian University of Architecture and Technology
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Xian University of Architecture and Technology
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Priority to CN202011587905.5A priority Critical patent/CN112681612A/en
Publication of CN112681612A publication Critical patent/CN112681612A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a high-strength steel concrete cross-shaped column which is partially prefabricated and assembled, comprising a high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled and cast-in-place concrete inside the high-strength steel concrete cross-shaped column shell; the shell comprises precast concrete and a cross-shaped steel-steel reinforcement framework; the cross-shaped steel-steel reinforcement framework comprises stirrups and cross-shaped steel surrounded by longitudinal bars, the side wing steel plates are connected to the end portion of a cross-shaped steel web plate, the two sides of each side wing steel plate are connected through the patterned steel plates and welded at the intersection nodes, and the inner cast-in-place concrete is poured into a cavity inside the high-strength steel concrete cross-shaped column shell of the partial prefabricated assembly. The invention solves the problems of difficult hoisting and transportation and environmental pollution; the crack that cast-in-place and precast concrete poor production of intensity reduces, and the bonding structure intensity and the durability of post-cast concrete and prefabricated part are strengthened, and anti-seismic performance is better, and the bearing capacity and the ductility of post obtain showing and improve.

Description

High-strength steel concrete cross-shaped column partially prefabricated and assembled
Technical Field
The invention relates to a prefabricated assembly type steel concrete special-shaped column, in particular to a high-strength type steel concrete cross-shaped column which is partially prefabricated and assembled.
Background
The development of steel and concrete composite structures has been achieved to date. The steel reinforced concrete has the advantages of both concrete and steel, can make up the respective defects, and is one of the development trends of the building industry at present due to the good stress performance and characteristics of the steel reinforced concrete.
The traditional construction method in China is field construction, but with the increasing call of 'green buildings', the construction method can not meet the requirements of society on low consumption and environmental protection. And the section steel concrete structure is different from a common reinforced concrete structure, so that the construction is more difficult, the working procedures are complicated, the technical requirements on constructors are high, the time and the economic cost of the construction are high, the economic benefit is reduced, and the popularization of the section steel concrete structure is limited. With the development of prefabricated structures, the fully prefabricated steel reinforced concrete structure is produced, and all components of the steel reinforced concrete structure are produced in a factory and then transported to a construction site for splicing and assembling. The construction method ensures the quality of each component, can control the processing progress, and is green and environment-friendly. However, the method has the defects of poor integrity, large self weight of the member and high transportation and hoisting cost.
Disclosure of Invention
The invention aims to provide a high-strength steel concrete cross-shaped column which is partially prefabricated and assembled, and the structure solves the problems of difficult hoisting and transportation and environmental pollution; cracks generated by the strength difference between cast-in-place concrete and precast concrete are reduced, and the adhesion between post-cast concrete and a precast part is enhanced; the strength, durability and earthquake resistance of the structure are improved, and the bearing capacity and ductility of the column are obviously improved.
The purpose of the invention is realized by the following technical scheme:
the invention provides a high-strength steel concrete cross-shaped column which is partially prefabricated and assembled, comprising a high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled and cast-in-place concrete inside the high-strength steel concrete cross-shaped column shell; the high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled comprises precast concrete and a cross-shaped steel-steel reinforcement framework;
the cross shaped steel-steel reinforcement framework comprises stirrups and cross shaped steel surrounded by longitudinal bars, the cross shaped steel comprises a cross shaped steel web and a side wing steel plate, the side wing steel plate is connected at the end part of the cross shaped steel web, the two sides of the side wing steel plate are connected through a pattern steel plate, and the inner cast-in-place concrete is poured in the inner cavity of the high-strength steel concrete cross column shell of the partial prefabricated assembly at the welding joint.
Preferably, the side wing steel plate is fixed with a stud; the pegs are arranged on two sides of the cross-shaped steel web connecting side wing steel plate.
Preferably, the rows of pegs welded to the wing plates are arranged one above the other or staggered.
Preferably, the cross-shaped steel web plate comprises a first steel web plate and a second steel web plate, and the two second steel web plates are welded on two sides of the center of the first steel web plate.
Preferably, longitudinal bars are arranged around the side wing steel plates of the cross-shaped steel section, the stirrups are bound on the longitudinal bars, and the stirrups penetrate through the pattern steel plates and are welded on two sides of the first profile steel web plate and the second profile steel web plate without penetrating.
Preferably, the cross-shaped steel-steel reinforcement framework is fixed and supported, precast concrete is poured on the periphery of the cross-shaped steel-steel reinforcement framework, and maintenance is carried out to finish shell prefabrication.
Preferably, the cross-shaped steel is a high-strength steel plate, the precast concrete is precast ultrahigh-performance concrete, and the cast-in-place concrete inside is ordinary concrete.
The partially prefabricated and assembled high-strength steel reinforced concrete cross-shaped column is based on the advantages and the disadvantages of a cast-in-place steel reinforced concrete column and a fully prefabricated and assembled steel reinforced concrete column, and the advantages and the disadvantages of the cast-in-place steel reinforced concrete column and the fully prefabricated and assembled steel reinforced concrete column are combined, so that the advantages of the column and the column are fully utilized and mutually compensated. The high-strength steel reinforced concrete column which is partially prefabricated and assembled refers to that a shell constructed by steel reinforced concrete is prefabricated in a factory and transported to the site for pouring internal concrete after maintenance is finished. On the premise of ensuring the construction quality, the method reduces the working difficulty of site construction, reduces the construction time, reduces the transportation and hoisting cost, and meets the requirement of green buildings.
Compared with the prior art, the invention is characterized in that:
1) the partially prefabricated and assembled high-strength steel concrete column is based on the fully prefabricated and assembled concrete column and the cast-in-place concrete column, so that the industrial prefabricated production is realized, the environmental pollution of a construction site is reduced, the transportation and hoisting cost of the traditional prefabricated and assembled steel concrete column is reduced, and the social benefit is good.
2) Adopt decorative pattern steel sheet formwork between inside cast in situ concrete and the precast segment concrete, need not on the one hand to tear open the mould, construction convenience, on the other hand reduces between cast in situ concrete and the precast concrete because the crack that the intensity difference produced, and the reinforcement post-cast concrete is cohered with the precast segment.
3) The steel plate used by the cross-shaped steel adopts a high-strength steel plate, the concrete of the prefabricated part adopts ultra-high performance concrete, the strength and the durability of the structure are further improved, and the common concrete used by the cast-in-place concrete part can also reduce the cost of raw materials, so that the cross-shaped steel has good economic benefit.
4) The steel reinforced concrete column has better anti-seismic performance, the bearing capacity and the ductility of the column are obviously improved, and the excellent characteristics of concrete and steel are fully utilized to make up the defects of independent use of the concrete and the steel.
5) The column section form is reasonably utilized, the special-shaped column can be integrated with a wall to form a hidden column, the column corner is prevented from protruding in a room, the actual use area of the room is increased, and the flexibility and the convenience of a building are improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a partially prefabricated high-strength steel concrete cross-shaped column shell;
FIG. 2 is a schematic cross-sectional view of a partially prefabricated high-strength steel reinforced concrete cross-shaped column;
FIG. 3 is a schematic view of a high strength cruciform shape steel;
in the figure: 1. longitudinal ribs; 2. hooping; 3. a side wing steel plate; 4. a stud; 5. a first steel web; 6. a second type steel web; 7. an interior cavity; 8. a patterned steel plate; 9. prefabricating concrete; 10. the concrete is cast in situ inside.
Detailed Description
The invention will be further explained with reference to the drawings.
Referring to fig. 1 and 2, the partially prefabricated and assembled high-strength steel reinforced concrete cross-shaped column comprises a partially prefabricated and assembled high-strength steel reinforced concrete cross-shaped column shell (fig. 1), and the inner cast-in-place concrete 10, the high-strength steel concrete cross column shell (figure 1) of the partial prefabricated assembly comprises prefabricated concrete 9 and a cross-shaped steel-steel reinforcement framework, the cross-shaped steel-steel reinforcement framework comprises cross-shaped steel surrounded by longitudinal reinforcements 1 and stirrups 2, the cross-shaped steel comprises a cross-shaped steel web plate and side wing steel plates 3, the cross-shaped steel web plate comprises a first steel web plate 5 and a second steel web plate 6, the second steel web plate 6 is vertically welded on two sides of the first steel web plate 5, the side wing steel plates 1 are vertically welded on two ends of the first steel web plate 5 and the second steel web plate 6, and simultaneously, the studs 4 are fixed on two sides of the first section steel web 5 and the second section steel web 6 to tie the concrete. The two sides of the side wing steel plates 3 are connected through the pattern steel plates 8 and welded at the intersection nodes, and the internal cast-in-place concrete 10 is poured in the internal cavity 7 of the high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled. The side wing steel plates are connected with the section steel web plates and the section steel web plates in a fillet weld welding mode.
The cross-shaped steel is formed by welding high-strength steel plates with different thicknesses, and the patterned steel plates are used as templates to be welded around the cross-shaped steel, so that the bonding performance between concrete is improved, and the templates are not required to be removed.
As shown in figure 3, two rows of studs are respectively welded on the flange of the cross-shaped section steel, the studs 4 are arranged on two sides of the web connecting side wing steel plate 3 of the cross-shaped section steel, and the precast concrete and the cast-in-place concrete are pulled and bonded without interfering with the welding position of the stirrup. And the upper and lower rows of the studs welded on the side wing steel plates 3 are arranged in the same row or in a staggered manner.
Longitudinal bars 1 are arranged around the cross-shaped steel, stirrups 2 are bound on the longitudinal bars 1, the stirrups 2 penetrate through the patterned steel plates 8 and are welded on two sides of the steel web without being communicated, and the stirrups, the longitudinal bars and the cross-shaped steel form a cross-shaped steel-steel reinforcement framework.
The high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled is manufactured in a factory in advance, a cross-shaped steel-steel reinforcement framework is hoisted and fixed and then is supported, a pattern steel plate 8 with reserved bolt holes is used as a template for cast-in-place concrete and precast concrete, and after the precast concrete 9 is poured, careful maintenance is carried out to form the high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled. After the maintenance is finished, the concrete can be transported to a construction site, and the core part is poured in the inner cavity; the good maintenance condition of the factory provides favorable conditions for the ultra-high performance concrete, the quality of the prefabricated shell is guaranteed, and the time of site construction is greatly reduced.
And after the prefabricated assembly type steel concrete cross-shaped column shell is cured, transporting the prefabricated assembly type steel concrete cross-shaped column shell to a construction site for pouring the internal concrete 10.
The cross-shaped column is commonly used for the center pillar and bears a large vertical load, in order to guarantee that the high-strength steel concrete column of the partial prefabricated assembly has enough bearing capacity, and according to the stress characteristic of the column, the steel plate used by the cross-shaped steel adopts a high-strength steel plate, the bearing capacity of the column can be greatly improved, the prefabricated part concrete adopts ultra-high performance concrete, and the cast-in-place concrete part uses common concrete.
According to the technical scheme, based on the fully prefabricated assembled steel concrete column and the cast-in-place steel concrete column, the ductility and the anti-seismic performance of components are improved, the transportation and hoisting cost of the fully prefabricated assembled steel concrete column is reduced, the field construction time of the cast-in-place steel concrete column is shortened, the pollution degree to the environment is reduced, meanwhile, the section steel and the prefabricated ultrahigh-performance concrete which are made of the high-strength steel plate can greatly improve the bearing capacity of the column, and the partially prefabricated high-strength steel concrete cross column has good engineering, social and economic benefits.
While certain exemplary embodiments of the invention have been described above by way of illustration, it will be apparent to those skilled in the art that the invention may be practiced in other various ways without departing from the spirit and scope of the invention. Other embodiments are within the scope of the invention.

Claims (7)

1. The high-strength steel concrete cross column is characterized by comprising a high-strength steel concrete cross column shell and internal cast-in-place concrete (10), wherein the high-strength steel concrete cross column shell is partially prefabricated and assembled; the high-strength steel concrete cross-shaped column shell which is partially prefabricated and assembled comprises precast concrete (9) and a cross-shaped steel-steel reinforcement framework;
the cross shaped steel-steel reinforcement framework comprises stirrups (2) and cross shaped steel surrounded by longitudinal bars (1), the cross shaped steel comprises a cross shaped steel web and side wing steel plates (3), the side wing steel plates (3) are connected at the end part of the cross shaped steel web, the two sides of the side wing steel plates (3) are connected through pattern steel plates (8), and the cross shaped steel web and the side wing steel plates are welded at the node of intersection, and internal cast-in-place concrete (10) is poured in a cavity (7) inside a high-strength steel concrete cross column shell of the partial prefabricated assembly.
2. The partially prefabricated high-strength steel reinforced concrete cross-shaped column according to claim 1, wherein a stud (4) is fixed on the side wing steel plate (3); the pegs (4) are arranged on two sides of the cross-shaped steel web connecting side wing steel plates (3).
3. The partially prefabricated high-strength steel reinforced concrete cross-shaped column according to claim 2, wherein the rows of the studs welded to the side-wing steel plates (3) are arranged in the same row or staggered in the vertical direction.
4. A partially prefabricated high strength section steel concrete cross-shaped column according to claim 1, wherein said cross-shaped section steel web comprises a first section steel web (5) and a second section steel web (6), and two second section steel webs (6) are welded on both sides of the center of the first section steel web (5).
5. The partially prefabricated high-strength section steel concrete cross-shaped column is characterized in that longitudinal ribs (1) are arranged around side wing steel plates (3) of the cross-shaped section steel, stirrups (2) are bound on the longitudinal ribs (1), and the stirrups (2) pass through pattern steel plates (8) and are welded on two sides of a first section steel web plate (5) and a second section steel web plate (6) without penetrating.
6. The partially prefabricated and assembled high-strength steel concrete cross-shaped column as claimed in claim 1, wherein the cross-shaped steel-reinforced skeleton is fixed and supported, and precast concrete (9) is poured around the cross-shaped steel-reinforced skeleton and maintained to complete the prefabrication of the outer shell.
7. The partially prefabricated high-strength steel concrete cross-shaped column as claimed in any one of claims 1 to 6, wherein the cross-shaped steel is a high-strength steel plate, the precast concrete (9) is precast ultra-high performance concrete, and the internal cast-in-place concrete (10) is ordinary concrete.
CN202011587905.5A 2020-12-28 2020-12-28 High-strength steel concrete cross-shaped column partially prefabricated and assembled Pending CN112681612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011587905.5A CN112681612A (en) 2020-12-28 2020-12-28 High-strength steel concrete cross-shaped column partially prefabricated and assembled

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011587905.5A CN112681612A (en) 2020-12-28 2020-12-28 High-strength steel concrete cross-shaped column partially prefabricated and assembled

Publications (1)

Publication Number Publication Date
CN112681612A true CN112681612A (en) 2021-04-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818334A (en) * 2021-09-22 2021-12-21 湖南大学 Prefabricated UHPC formwork core-filling concrete pier with framework and construction method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113818334A (en) * 2021-09-22 2021-12-21 湖南大学 Prefabricated UHPC formwork core-filling concrete pier with framework and construction method thereof

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