CN105133793A - Space constraint multi-cavity pipe-in-pipe steel bar concrete huge column and construction method - Google Patents

Space constraint multi-cavity pipe-in-pipe steel bar concrete huge column and construction method Download PDF

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CN105133793A
CN105133793A CN201510561889.5A CN201510561889A CN105133793A CN 105133793 A CN105133793 A CN 105133793A CN 201510561889 A CN201510561889 A CN 201510561889A CN 105133793 A CN105133793 A CN 105133793A
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steel pipe
concrete
steel
tube
cavity
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CN105133793B (en
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姚攀峰
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姚攀峰
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Abstract

The invention relates to a space constraint multi-cavity pipe-in-pipe steel bar concrete huge column and a construction method. A huge column comprises a core steel pipe concrete part and a steel-encased pipe concrete part. A core steel pipe forms an inner cavity. The inner cavity is filled with inner cavity concrete, and a steel bar frame is arranged through the middle part of the inner cavity. The core steel pipe and the steel-encased pipe form an outer cavity. The outer cavity is filled with outer cavity concrete, and at least a steel bar frame is arranged through the outer cavity. The core steel pipe and the steel-encased pipe are connected through a vertical connection plate and form a space steel pipe structure. The outer steel pipe of the huge column is connected with the inner steel pipe through the vertical connection plate, the space steel pipe structure is formed, and the force bearing performance of traditional steel pipe concrete can be raised effectively. The huge column has a strong anti-pressure capability, steel and concrete combined action performances are good under action of long-term load. The huge column has good earthquake resistant behavior, fireproof performance and construction convenience.

Description

The huge post of multi-cavity tube-in-tube steel concrete of space constraint and construction method
Technical field
The present invention relates to the huge post of a kind of concrete filled steel tube and construction method, particularly relate to a kind of huge post of multi-cavity tube-in-tube steel concrete and construction method of space constraint.
Background technology
Along with City Building scale constantly increases the requirement with anti-seismic technology, encased structures application is more, conventional concrete filled steel tube is a steel pipe, the mode of interior concreting, but also there are some problems, because concrete exists the problem of shrinkage and creep, especially to the huge post of large-sized concrete filled steel tube, steel pipe is limited to concrete constraint, after there is concrete shrinkage, there is microcrack with steel pipe, may cause concrete and steel pipe cannot be simultaneously stressed like this, reach predetermined stressed effect.How to find one to play and give full play to the concrete mechanical property of long-size steel tube, the adverse effect that concrete shrinkage and creep brings can be reduced again, avoid the structure of concrete microcrack and construction method to be a difficult problem.
For solving the problem, application number is the steel core concrete column disclosing the semicontinuous reinforcing cage of a kind of built-in preprocessing in the Chinese patent of 201520082003.4, and described steel pipe column comprises steel cylinder and the continuity reinforcement(bar) cage that inside is prefabricated with interrupted reinforcing cage; The entirety that the steel cylinder that described inside is prefabricated with interrupted reinforcing cage is made up of interrupted reinforcing cage, huge steel cylinder and tension member; Described huge steel cylinder inside is become several cavitys by longitudinal vertical clapboard with Horizontal vertical baffle for separating, transverse partition panel is arranged at intervals with along short transverse in each cavity, described interrupted reinforcing cage is between adjacent transverse demarcation strip, and it connects into entirety by tension member and huge steel cylinder inwall; Described continuity reinforcement(bar) cage, along the elongated setting of cavity length, has in the middle part of described transverse partition panel for continuity reinforcement(bar) cage through hole.Said structure to some extent solves the technical problem that overlong jumbo concrete filled steel tube rod structure compressive strength is low and fireproof performance is poor.
Especially when the cross section of post is larger, still there are the following problems for said structure: anti-pressure ability is not enough, ductility is not enough, structural integrity is poor, the ability resisting larger earthquake load is poor, in addition, due to the main outer steel pipe of periphery constraint, the load that its peripheral structure is shared is relatively less, therefore, limit huge column cross-section size, and due to huge column cross-section size can not be excessive, the cavity cross-section size that outer steel pipe is formed can not be excessive, therefore, consider easily for construction, the reinforcing cage of its inside arranges point two parts, a part is the continuity reinforcement(bar) cage along the elongated setting of cavity length, another part is the reinforcing cage (cage of reinforcement) between adjacent transverse demarcation strip can only be interrupted.
Summary of the invention
In view of the foregoing, the object of this invention is to provide a kind of huge post of multi-cavity tube-in-tube steel concrete and construction method of space constraint, the technical problem solved is when column section is larger, provides that a kind of anti-pressure ability is strong, good integrity and construction huge rod structure form easily.
For achieving the above object, the present invention adopts following technical scheme:
The huge post of multi-cavity tube-in-tube steel concrete of space constraint, is characterized in that: comprise
Core concrete filled steel tube part, wherein, core steel pipe forms inner cavity chamber, is filled with inner chamber concrete and in the middle part of inner cavity chamber, has through cage of reinforcement in described inner cavity chamber;
And outside steel pipe concrete parts, wherein, between described core steel pipe and described outside steel pipe, form outer chamber, in described outer chamber, be filled with exocoel concrete and at least one through cage of reinforcement;
Steel Space tubular structure is connected to form by vertical junction plate between described core steel pipe and described outside steel pipe.
Particularly, described vertical junction plate is more than 2 pieces, and the vertical junction plate of every block has a hole at least.
Further, described outer chamber has one piece of lateral partitions at least, and described lateral partitions is connected with outside steel pipe or vertical junction plate.
Further, described lateral partitions has a hole at least.
Preferably, interior steel pipe diaphragm is had between described core steel pipe.
Preferably, described core steel pipe, outside steel pipe, vertical junction plate, lateral partitions and interior steel pipe diaphragm has more than one peg at least.
Particularly, described inner chamber concrete and the concrete label of exocoel are all not less than C30, and inner chamber concrete grade is higher than exocoel concrete grade.
Further, described cage of reinforcement is made up of through vertical muscle and through stirrup.
The construction method of the huge post of multi-cavity tube-in-tube steel concrete of above-mentioned space constraint, its step is as follows:
Step one, factory's piecemeal are cut into steel plate, the steel plate of outside steel pipe, vertically junction plate, lateral partitions of core steel pipe;
Step 2, the steel plate of the steel plate of core steel pipe and outside steel pipe is worked into predetermined shape, and punches on vertical junction plate and lateral partitions;
Step 3, the steel plate of the steel plate of above-mentioned core steel pipe, outside steel pipe, vertical junction plate, lateral partitions is welded together, make outer steel pipe module, interior steel pipe module;
The external surface Construction corrosion prevention priming paint of step 4, outside steel pipe module;
Step 5, outer steel pipe module and interior steel pipe module are transported to job site;
Step 6, outer steel pipe module and interior steel pipe mould Site Welding integrally;
Step 7, toward concreting in chamber, inject concrete with slip casing by pressure pipe, concrete Down-Up jacking is built, or concreting from top to bottom, and vibrate;
Step 8, curing concrete are to predetermined strength;
Step 9, external surface Construction corrosion prevention finish paint to outside steel pipe,
Step 10, to the external surface of outside steel pipe construction fire proofing material.
Compared with prior art the present invention has following characteristics and beneficial effect:
The outer steel pipe of this huge post is connected together by vertical junction steel plate with interior steel pipe, Special composition steel tubular structure, effectively can improve the stress performance of conventional steel steel concrete, it is relative to existing steel core concrete column, the size range of the huge column section that first can be formed increases greatly, peripheral structure is owing to being Steel Space tubular structure in addition, it can share larger external load relative to its peripheral structure of existing steel core concrete column, therefore the space of internal cavity can realize large space, cage of reinforcement for inner cavity chamber is set to through cage of reinforcement and provides possibility, discrete reinforcing cage is decreased compared with existing structure, constructability more, further reduction cost.
Inner chamber steel concrete is in core, is subject to the extremely strong effect of contraction of the space steel pipe of interior steel pipe and outer steel tube place composition, can improves the Compressive Bearing Capacity of inner core steel concrete by a relatively large margin.
Exocoel steel concrete is subject to the polygon constraint of outside steel pipe and vertical junction steel plate, core steel pipe, plays strong constraint effect, can effectively improve steel concrete Compressive Bearing Capacity to the steel concrete in chamber; Vertical junction plate decreases the bearing length of steel pipe, effectively can improve the stress performance of steel pipe.Under action of long-term load, steel and steel concrete acting in conjunction performance good.
In fire prevention, ability is strong, and have multiple defence line, even if outer layer pipe loses effect, inner layer steel pipe and steel concrete still have stronger bearing capacity.
Huge post distortion is little, and should diminish, bearing capacity is high.Multiple cavity is conducive to concreting, is conducive to reducing concrete shrinkage and creep.
This huge rod structure can realize modular construction, and speed of application is fast.
The present invention can be widely used in the situation that in Super High longspan structure, huge column section is larger.
There is the tube-in-tube of space constraint effect, with reinforcing bar, concrete formed one complicated totally stressed,
Under gravity load effect, steel pipe, reinforcing bar, concrete bear corresponding gravity load according to respective rigidity, and tube-in-tube forms space constraint effect to concrete, effectively improve concrete intensity and vertical bearing capacity.
The reinforcing bar body formed by longitudinal reinforcement and transverse reinforcement, reduce the shrinkage and creep after hardening of concrete, prevent from forming space between concrete and steel pipe, and then cause the inefficacy of tube-in-tube space constraint effect, effectively can improve concrete three-dimensional compressive strength and bearing capacity.
Under the reciprocal extreme load effects such as earthquake, the entirety that reinforcing bar and concrete are formed, antidetonation common with steel pipe, avoids the shortcoming of pure concrete ductility difference and early stage Local Cracking and fragmentation, thus improves bearing capacity and the energy dissipation capacity of the huge post of multi-cavity steel tube steel concrete.
Under fire and gravity load effect, this structure has the effect in two defence lines, road.Peripheral steel pipe first lost efficacy, and the longitudinal reinforcement in outside, stirrup and concrete form the steel concrete with effect of restraint, with interior steel tubing portions shared fire and gravity load, form two defence lines, road.Overcome the shortcoming that multi-cavity steel tube+plain concrete construction depression of bearing force is too much, under fire and gravity load effect, peripheral steel pipe first lost efficacy, pure concrete increases at fire and gravity load effect lower volume, rapid destruction also loses bearing capacity, outside steel pipe and concrete parts bearing capacity significantly decline, and only have inner pipe portion effectively to bear gravity and fire.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is the huge column section figure of multi-cavity tube-in-tube steel concrete;
Fig. 2 is multi-cavity tube-in-tube steel concrete huge post reinforcing bar distribution situation;
Fig. 3 is multi-cavity tube-in-tube pipe steel concrete huge post steel pipe distribution situation.
Reference numeral: steel pipe diaphragm in the through vertical muscle of 1-outside steel pipe, 2-, the through stirrup of 3-, 4-lateral partitions, 5-exocoel concrete, 6-inner chamber concrete, the vertical junction plate of 7-, 8-core steel pipe, 9-.
Detailed description of the invention
For describing technical scheme of the present invention in detail, provide specific embodiment below in conjunction with accompanying drawing.
See Fig. 1 to Fig. 3, wherein, Fig. 1 is the huge column section figure of multi-cavity tube-in-tube steel concrete; Fig. 2 is multi-cavity tube-in-tube steel concrete huge post reinforcing bar distribution situation; Fig. 3 is multi-cavity tube-in-tube pipe steel concrete huge post steel pipe distribution situation.The huge post of multi-cavity tube-in-tube steel concrete of a kind of space constraint shown in figure, comprise core concrete filled steel tube part and outside steel pipe concrete parts, wherein, core steel pipe 8 forms inner cavity chamber, inner chamber concrete 6 is filled with in described inner cavity chamber, wherein, core steel pipe 8 can be single steel pipe or many steel pipes; Wherein, form outer chamber between described core steel pipe 8 and described outside steel pipe 1, in described outer chamber, be filled with exocoel concrete 5; And in order to effectively improve the concrete stress performance of conventional steel, Steel Space tubular structure is connected to form by vertical junction plate 7 between core steel pipe 8 and described outside steel pipe 1, in the present embodiment, described outer chamber has one piece at least for connecting the lateral partitions 4 of core steel pipe 8 and outside steel pipe 1, and described lateral partitions 4 is connected with outside steel pipe 1 or vertical junction plate 7.In the present embodiment, a cage of reinforcement is had in the middle part of described inner chamber.Described cage of reinforcement is made up of through vertical muscle 2 and through stirrup 3.
In the specific implementation, described vertical junction plate is more than 2 pieces, and the vertical junction plate of every block has a hole at least.
In the specific implementation, described lateral partitions 4 has a hole at least.
In the specific implementation, interior steel pipe diaphragm 9 is had between described core steel pipe 8.
In the specific implementation, described core steel pipe 8, outside steel pipe 1, vertical junction plate 7, lateral partitions 4 and interior steel pipe diaphragm 9 has more than one peg at least.
In the specific implementation, described inner chamber concrete and the concrete label of exocoel are all not less than C30, and inner chamber concrete grade is higher than exocoel concrete grade.
In the specific implementation, described inner cavity chamber also can no-reinforcing-bar skeleton.
In the specific implementation, a cage of reinforcement is had in described outer chamber at least.Its cage of reinforcement is made up of through vertical muscle and through stirrup.
In the specific implementation, stirrup is circular or square, or above-mentioned combination, longitudinal reinforcement and stirrup and concrete composition steel concrete.
In the specific implementation, steel plate connects and connects with welding, bolt or rivet, and column section area is more than 1 square metre.
In the specific implementation, outside steel pipe, core steel pipe can be circle, rectangle, polygon, ellipse, or the combination of above-mentioned shape, can local excavation.
In the specific implementation, between vertical junction plate, available reinforcing bar or steel plate connect.
In the specific implementation, described outside steel pipe surface can be brushed with fire proofing material.
The construction method of the huge post of multi-cavity tube-in-tube steel concrete of above-mentioned space constraint, its step is as follows:
Step one, factory's piecemeal are cut into steel plate, the steel plate of outside steel pipe, vertically junction plate, lateral partitions of core steel pipe;
Step 2, the steel plate of the steel plate of core steel pipe and outside steel pipe is worked into predetermined shape, and punches on vertical junction plate and lateral partitions;
Step 3, the steel plate of the steel plate of above-mentioned core steel pipe, outside steel pipe, vertical junction plate, lateral partitions is welded together, make outer steel pipe module, interior steel pipe module;
The external surface Construction corrosion prevention priming paint of step 4, outside steel pipe module;
Step 5, outer steel pipe module and interior steel pipe module are transported to job site;
Step 6, outer steel pipe module and interior steel pipe mould Site Welding integrally;
Step 7, toward concreting in chamber, inject concrete with slip casing by pressure pipe, concrete Down-Up jacking is built, or concreting from top to bottom, and vibrate;
Step 8, curing concrete are to predetermined strength;
Step 9, external surface Construction corrosion prevention finish paint to outside steel pipe,
Step 10, to the external surface of outside steel pipe construction fire proofing material.
When the step 7 ~ step 8 of above-mentioned basic skills can be replaced with following operation by employing superposed type construction method:
7a. is toward concreting in inner chamber;
7b. maintenance inner chamber concrete is to some strength;
The leading exocoel concrete of 7c. inner chamber concrete continues construction, after bearing certain load, and concreting in exocoel;
7b. maintenance exocoel concrete is to some strength.
When there being cage of reinforcement in huge rod structure, following operation can be increased between the step 6 ~ step 7 of above-mentioned basic skills:
6a blocks the longitudinal reinforcement be communicated with and stirrup according to design length, and welding or sleeve connection reinforcing cage (reinforcing cage);
6b enters reinforcing bar cage hoisting in cavity and connects with sleeve or welding or overlap joint is overall.
The embodiment that above-described embodiment content just adopts for the ease of understanding technical scheme of the present invention, is not intended to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from disclosed core technology scheme; any amendment and change can be made in the form implemented and details; but the protection domain that the present invention limits, the scope that still must limit with appending claims is as the criterion.

Claims (9)

1. the huge post of multi-cavity tube-in-tube steel concrete of space constraint, is characterized in that: comprise
Core concrete filled steel tube part, wherein, core steel pipe forms inner cavity chamber, is filled with inner chamber concrete and in the middle part of inner cavity chamber, has through cage of reinforcement in described inner cavity chamber;
And outside steel pipe concrete parts, wherein, between described core steel pipe and described outside steel pipe, form outer chamber, in described outer chamber, be filled with exocoel concrete and at least one through cage of reinforcement;
Steel Space tubular structure is connected to form by vertical junction plate between described core steel pipe and described outside steel pipe.
2. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 1, it is characterized in that: described vertical junction plate is more than 2 pieces, the vertical junction plate of every block has a hole at least.
3. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 2, is characterized in that: described outer chamber has one piece of lateral partitions at least, and described lateral partitions is connected with outside steel pipe or vertical junction plate.
4. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 3, is characterized in that: described lateral partitions has a hole at least.
5. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 1, is characterized in that: have interior steel pipe diaphragm between described core steel pipe.
6. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 5, is characterized in that: described core steel pipe, outside steel pipe, vertical junction plate, lateral partitions and interior steel pipe diaphragm have more than one peg at least.
7. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 1, is characterized in that: described inner chamber concrete and the concrete label of exocoel are all not less than C30, and inner chamber concrete grade is higher than exocoel concrete grade.
8. the huge post of multi-cavity tube-in-tube steel concrete of space constraint according to claim 1, is characterized in that: described cage of reinforcement is made up of through vertical muscle and through stirrup.
9. the construction method of the huge post of multi-cavity tube-in-tube steel concrete of the space constraint according to claim 1 to 8 any one, it is characterized in that, step is as follows:
Step one, factory's piecemeal are cut into steel plate, the steel plate of outside steel pipe, vertically junction plate, lateral partitions of core steel pipe;
Step 2, the steel plate of the steel plate of core steel pipe and outside steel pipe is worked into predetermined shape, and punches on vertical junction plate and lateral partitions;
Step 3, the steel plate of the steel plate of above-mentioned core steel pipe, outside steel pipe, vertical junction plate, lateral partitions is welded together, make outer steel pipe module, interior steel pipe module;
The external surface Construction corrosion prevention priming paint of step 4, outside steel pipe module;
Step 5, outer steel pipe module and interior steel pipe module are transported to job site;
Step 6, outer steel pipe module and interior steel pipe mould Site Welding integrally;
Step 7, toward concreting in chamber, inject concrete with slip casing by pressure pipe, concrete Down-Up jacking is built, or concreting from top to bottom, and vibrate;
Step 8, curing concrete are to predetermined strength;
Step 9, external surface Construction corrosion prevention finish paint to outside steel pipe,
Step 10, to the external surface of outside steel pipe construction fire proofing material.
CN201510561889.5A 2015-09-07 2015-09-07 The huge post of multi-cavity tube-in-tube armored concrete and construction method of space constraint Active CN105133793B (en)

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Publication number Priority date Publication date Assignee Title
CN106499120A (en) * 2016-10-14 2017-03-15 北京工业大学 A kind of underground structure N-shaped that is used for connects Prefabricated spilt post
JP2018104964A (en) * 2016-12-26 2018-07-05 大和ハウス工業株式会社 Column structure and construction method
CN113309292A (en) * 2021-06-07 2021-08-27 哈尔滨工业大学 Variable-section multi-steel-pipe high-strength waste concrete combined column and construction method thereof

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CN104674986A (en) * 2015-02-05 2015-06-03 姚攀峰 Multi-cavity concrete-filled steel tubular wall with internal pre-machined semi-continuous reinforcement cage and construction method
CN205000555U (en) * 2015-09-07 2016-01-27 姚攀峰 Huge post of multicavity guan zhongguan reinforced concrete of space restraint

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JPH1113139A (en) * 1997-06-26 1999-01-19 Nippon Steel Corp Corner angle joint between reinforced bar or steel framed reinforced concrete structure and various columnar structure, and joining method therefor
JP2002129653A (en) * 2000-10-20 2002-05-09 Taisei Corp Reinforced concrete column and joint part structure of the column and steel beam
JP2005220698A (en) * 2004-02-09 2005-08-18 Shimizu Corp Square type steel pipe reinforced concrete column
CN2801934Y (en) * 2005-06-22 2006-08-02 上海市城市建设设计研究院 Steel pipe concrete stiffened structure
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN113309292A (en) * 2021-06-07 2021-08-27 哈尔滨工业大学 Variable-section multi-steel-pipe high-strength waste concrete combined column and construction method thereof

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