CN105133793B - The huge post of multi-cavity tube-in-tube armored concrete and construction method of space constraint - Google Patents
The huge post of multi-cavity tube-in-tube armored concrete and construction method of space constraint Download PDFInfo
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Abstract
The present invention relates to the huge post of multi-cavity tube-in-tube armored concrete and construction method of a kind of space constraint, wherein, huge post includes core concrete filled steel tube part and outside steel pipe concrete parts, wherein, core steel pipe forms inner cavity chamber, is filled with inner chamber concrete in the inner cavity chamber and has the framework of steel reinforcement of insertion in the middle part of inner cavity chamber；Wherein, exocoel is formed between the core steel pipe and the outside steel pipe, exocoel concrete and the framework of steel reinforcement of at least one insertion are filled with the exocoel；Connect to form space steel-tube construction by vertical connecting plate between the core steel pipe and the outside steel pipe.The outer steel pipe of the huge post is connected together with interior steel pipe by vertical connecting plate, Special composition steel-tube construction, can effectively improve the stress performance of conventional steel concrete.With stronger anti-pressure ability and under action of long-term load, steel and concrete collective effect performance are good.With good anti-seismic performance, fire protecting performance and the convenience of construction.
Description
Technical field
The present invention relates to a kind of huge post of concrete filled steel tube and construction method, more particularly to a kind of multi-lumen tube of space constraint
The huge post of middle pipe armored concrete and construction method.
Background technology
With constantly increase and the requirement of anti-seismic technology of City Building scale, concrete filled steel tube application is more,
Conventional concrete filled steel tube is a steel pipe, the mode of interior casting concrete, but there is also some problems, because concrete is deposited
Shrink and creep the problem of, especially to the huge post of large-sized concrete filled steel tube, steel pipe constrains concrete limited, coagulation be present
After soil shrinks, microcrack be present with steel pipe, may so cause concrete and steel pipe can not stress simultaneously, reach it is predetermined by
Power effect.How a kind of mechanical property that can play give full play to heavy-gauge steel pipe concrete is found, and and can reduces concrete
The adverse effect brought is shunk and creeps, it is a problem to avoid the structure of concrete microcrack and construction method.
To solve the above problems, a kind of built-in preprocessing is disclosed in the Chinese patent of Application No. 201520082003.4
The steel core concrete column of semicontinuous steel reinforcement cage, the steel pipe column include the steel cylinder and continuity reinforcement(bar) that inside is prefabricated with interrupted steel reinforcement cage
Cage；The inside is prefabricated with the entirety that the steel cylinder of interrupted steel reinforcement cage is made up of interrupted steel reinforcement cage, huge steel cylinder and tension member；It is described
Several cavitys, each cavity interior edge short transverse interval are separated into by longitudinal vertical clapboard and horizontal vertical clapboard inside huge steel cylinder
Transverse partition panel is provided with, for the discontinuously steel reinforcement cage between adjacent transverse demarcation strip, it passes through tension member and huge steel cylinder
Inwall connection is integral；The continuity reinforcement(bar) cage has for continuous steel along the elongated setting of cavity length, the transverse partition panel middle part
Muscle cage passes through hole.Said structure solve to a certain extent overlong jumbo concrete filled steel tube rod structure compression strength it is low and
The technical problem of fire protecting performance difference.
Especially when the section of post is bigger, said structure still suffers from following problem：Anti-pressure ability deficiency, ductility deficiency, knot
Structure globality is poor, and it is poor to resist the ability of larger earthquake load, further, since periphery constraint is mainly by outer steel pipe, its periphery
The load that structure is shared is relatively fewer, therefore, limits huge column cross-section size, and because huge column cross-section size can not be excessive, outside
The cavity cross-section size that steel pipe is formed can not be excessive, therefore, easily considers for construction, and its internal steel reinforcement cage, which is set, to be divided
Two parts, a part be along the elongated setting of cavity length continuity reinforcement(bar) cage, another part be positioned at adjacent transverse demarcation strip it
Between steel reinforcement cage（Framework of steel reinforcement）Can only be interrupted.
The content of the invention
In view of the foregoing, it is an object of the invention to provide a kind of huge post of multi-cavity tube-in-tube armored concrete of space constraint
And construction method, technical problems to be solved are when column section is larger, there is provided a kind of anti-pressure ability is strong, good integrity and construction
Easily huge rod structure form.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of multi-cavity tube-in-tube armored concrete huge post of space constraint, it is characterised in that：Including
Core concrete filled steel tube part, wherein, core steel pipe forms inner cavity chamber, and inner chamber coagulation is filled with the inner cavity chamber
Soil and the framework of steel reinforcement for having insertion in the middle part of inner cavity chamber；
And outside steel pipe concrete parts, wherein, exocoel is formed between the core steel pipe and the outside steel pipe, institute
State the framework of steel reinforcement filled with exocoel concrete and at least one insertion in exocoel；
Connect to form space steel-tube construction by vertical connecting plate between the core steel pipe and the outside steel pipe.
Specifically, the vertical connecting plate is more than 2 pieces, every piece of vertical connecting plate at least one hole.
Further, the exocoel at least one piece of lateral partitions, the lateral partitions connect with outside steel pipe or vertically
Fishplate bar connects.
Further, at least one hole in the lateral partitions.
Preferably, there is interior steel pipe diaphragm plate between the core steel pipe.
Preferably, on the core steel pipe, outside steel pipe, vertical connecting plate, lateral partitions and interior steel pipe diaphragm plate at least
There is more than one peg.
Specifically, the label of the inner chamber concrete and exocoel concrete is not less than C30, and inner chamber concrete grade is high
In exocoel concrete grade.
Further, the framework of steel reinforcement is formed by penetrating vertical muscle and insertion stirrup.
The construction method of the huge post of multi-cavity tube-in-tube armored concrete of above-mentioned space constraint, its step are as follows：
Step 1: factory's piecemeal be cut into the steel plate of core steel pipe, the steel plate of outside steel pipe, vertical connecting plate, laterally every
Plate；
Step 2: the steel plate of core steel pipe and the steel plate of outside steel pipe are worked into predetermined shape, and in vertical connecting plate
And punched in lateral partitions；
Step 3: the steel plate of steel plate, outside steel pipe above-mentioned core steel pipe, vertical connecting plate, lateral partitions are welded to
Together, outer steel pipe module, interior steel pipe module is made；
Step 4: in the outer surface Construction corrosion prevention priming paint of outer steel pipe module；
Step 5: outer steel pipe module and interior steel pipe module are transported to job site；
It is Step 6: outer steel pipe module and interior steel pipe mould Site Welding is integral；
Step 7: toward casting concrete in chamber, concrete is injected with slip casing by pressure pipe, concrete is Down-Up jacked and poured
Build, or casting concrete from top to bottom, and vibrate；
Step 8: curing concrete is to predetermined strength；
Step 9: to the outer surface Construction corrosion prevention finish paint of outside steel pipe,
Step 10: the appearance surface construction fire proofing material to outside steel pipe.
Compared with prior art the invention has the characteristics that and beneficial effect：
The outer steel pipe of the huge post is connected together with interior steel pipe by vertical junction steel plate, and Special composition steel-tube construction can
The stress performance of conventional steel armored concrete is effectively improved, it can be formed first relative to existing steel core concrete column
The size range of huge column section substantially increase, peripheral structure is due to being space steel-tube construction in addition, and it is relative to existing steel
Its peripheral structure of pipe concrete column can share bigger external load, therefore the space of internal cavity can realize large space, be interior
The framework of steel reinforcement offer that the framework of steel reinforcement of chamber is disposed through is possible, reduces discrete steel reinforcement cage compared with existing structure,
Construction is easily facilitated, further reduces cost.
Inner chamber armored concrete is in core, and the extremely strong constraint of the space steel pipe formed by interior steel pipe and outer steel pipe is made
With the Compressive Bearing Capacity of inner cylinder armored concrete can be improved by a relatively large margin.
Exocoel armored concrete is by outside steel pipe and vertical junction steel plate, the polygon constraint of core steel pipe, to intracavitary
Armored concrete plays strong constraint effect, can effectively improve armored concrete Compressive Bearing Capacity；Vertical connecting plate reduces
The bearing length of steel pipe, the stress performance of steel pipe can be effectively improved.Under action of long-term load, steel is common with armored concrete
Effect propety is good.
Ability is strong in fire prevention, there is multiple defence line, even if outer layer pipe loses effect, inner layer steel pipe and armored concrete are still
There is stronger bearing capacity.
Huge post deformation is small, should diminish, high capacity.Multiple cavities are advantageous to concreting, advantageously reduce concrete
Contraction and creep.
This huge rod structure can realize modular construction, and speed of application is fast.
It the composite can be widely applied to the situation that huge column section is larger in Super High longspan structure.
Tube-in-tube with space constraint effect, a complicated stress totality is formed with reinforcing bar, concrete,
Under gravity laod effect, steel pipe, reinforcing bar, concrete undertake corresponding gravity laod according to respective rigidity, pipe
Middle pipe forms space constraint effect to concrete, effectively improves the intensity and vertical bearing capacity of concrete.
The reinforcing bar body formed by longitudinal reinforcement and transverse steel, reduce the contraction after concrete hardening and creep, prevent from mixing
Space is formed between solidifying soil and steel pipe, and then causes the failure of tube-in-tube space constraint effect, concrete can be effectively improved
Three-dimensional compressive strength and bearing capacity.
Under the reciprocal extreme load effect such as earthquake, the entirety of reinforcing bar and concrete formation, with the common antidetonation of steel pipe, avoid
The Local Cracking of the shortcomings that pure concrete ductility difference and early stage and broken, so as to improve holding for the huge post of multi-cavity steel tube armored concrete
Carry power and energy dissipation capacity.
Under fire and gravity laod effect, this structure has the function that two defence lines.Peripheral steel pipe first fails, outside
Longitudinal reinforcement, stirrup and concrete form the armored concrete with effect of restraint, with interior steel tubing portions shared fire and
Gravity laod, form two defence lines.The shortcomings that overcoming multi-cavity steel tube+plain concrete construction depression of bearing force excessive, fire with
Under gravity laod effect, peripheral steel pipe first fails, and pure concrete is in fire and gravity laod effect lower volume increase, rapid destruction
And lose bearing capacity, outside steel pipe and concrete parts bearing capacity significantly decline, only inner pipe portion effectively undertake gravity and
Fire.
Brief description of the drawings
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the huge column section figure of multi-cavity tube-in-tube armored concrete；
Fig. 2 is the huge post reinforcing bar distribution situation of multi-cavity tube-in-tube armored concrete；
Fig. 3 is the huge post steel pipe distribution situation of multi-cavity tube-in-tube pipe armored concrete.
Reference：1- outside steel pipes, the vertical muscle of 2- insertions, 3- insertions stirrup, 4- lateral partitions, 5- exocoel coagulations
Steel pipe diaphragm plate in soil, 6- inner chambers concrete, the vertical connecting plates of 7-, 8- cores steel pipe, 9-.
Embodiment
To describe technical scheme in detail, specific embodiment is provided below in conjunction with the accompanying drawings.
Referring to Fig. 1 to Fig. 3, wherein, Fig. 1 is the huge column section figure of multi-cavity tube-in-tube armored concrete；Fig. 2 is multi-cavity tube-in-tube
The huge post reinforcing bar distribution situation of armored concrete；Fig. 3 is the huge post steel pipe distribution situation of multi-cavity tube-in-tube pipe armored concrete.Show in figure
A kind of huge post of multi-cavity tube-in-tube armored concrete of the space constraint shown, including core concrete filled steel tube part and outside steel pipe mix
Native part is coagulated, wherein, core steel pipe 8 forms inner cavity chamber, and inner chamber concrete 6 is filled with the inner cavity chamber, wherein, core steel pipe
8 can be single steel pipe or more steel pipes；Wherein, exocoel is formed between the core steel pipe 8 and the outside steel pipe 1, it is described outer
Exocoel concrete 5 is filled with chamber；And in order to effectively improve the stress performance of conventional steel concrete, in the He of core steel pipe 8
Space steel-tube construction is formed by the connection of vertical connecting plate 7 between the outside steel pipe 1, in the present embodiment, the exocoel
At least one piece is used to connecting the lateral partitions 4 of core steel pipe 8 and outside steel pipe 1, the lateral partitions 4 and outside steel pipe 1 or
Vertical connecting plate 7 connects.In the present embodiment, there is a framework of steel reinforcement in the middle part of the inner chamber.The framework of steel reinforcement is vertical by penetrating
Muscle 2 and insertion stirrup 3 form.
In the specific implementation, the vertical connecting plate is more than 2 pieces, every piece of vertical connecting plate at least one hole.
In the specific implementation, at least one hole in the lateral partitions 4.
In the specific implementation, there is interior steel pipe diaphragm plate 9 between the core steel pipe 8.
In the specific implementation, the core steel pipe 8, outside steel pipe 1, vertical connecting plate 7, lateral partitions 4 and interior steel pipe are horizontal
At least more than one peg on dividing plate 9.
In the specific implementation, the label of the inner chamber concrete and exocoel concrete is not less than C30, and inner chamber concrete
Label is higher than exocoel concrete grade.
In the specific implementation, the inner cavity chamber can also no-reinforcing-bar skeleton.
In the specific implementation, at least one framework of steel reinforcement in the exocoel.Its framework of steel reinforcement is by penetrating vertical muscle and passing through
Logical stirrup composition.
In the specific implementation, stirrup is circular either square or combinations of the above, longitudinal reinforcement and stirrup and concrete
Form armored concrete.
In the specific implementation, steel plate connection welding, bolt connection or riveting, 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 above-mentioned
The combination of shape, can local excavation.
In the specific implementation, can be connected between vertical connecting plate with reinforcing bar or steel plate.
In the specific implementation, the outside steel pipe surface can be brushed with fire proofing material.
The construction method of the huge post of multi-cavity tube-in-tube armored concrete of above-mentioned space constraint, its step are as follows：
Step 1: factory's piecemeal be cut into the steel plate of core steel pipe, the steel plate of outside steel pipe, vertical connecting plate, laterally every
Plate；
Step 2: the steel plate of core steel pipe and the steel plate of outside steel pipe are worked into predetermined shape, and in vertical connecting plate
And punched in lateral partitions；
Step 3: the steel plate of steel plate, outside steel pipe above-mentioned core steel pipe, vertical connecting plate, lateral partitions are welded to
Together, outer steel pipe module, interior steel pipe module is made；
Step 4: in the outer surface Construction corrosion prevention priming paint of outer steel pipe module；
Step 5: outer steel pipe module and interior steel pipe module are transported to job site；
It is Step 6: outer steel pipe module and interior steel pipe mould Site Welding is integral；
Step 7: toward casting concrete in chamber, concrete is injected with slip casing by pressure pipe, concrete is Down-Up jacked and poured
Build, or casting concrete from top to bottom, and vibrate；
Step 8: curing concrete is to predetermined strength；
Step 9: to the outer surface Construction corrosion prevention finish paint of outside steel pipe,
Step 10: the appearance surface construction fire proofing material to outside steel pipe.
When using superposed type construction method can be by above-mentioned basic skills the step of seven~step 8 replace with following processes：
7a. is toward casting concrete in inner chamber；
7b. conserves inner chamber concrete to some strength；
Concrete leading exocoel concrete in 7c. inner chambers continues to construct, and after undertaking certain load, is poured into exocoel mixed
Solidifying soil；
7b. conserves exocoel concrete to some strength.
When having framework of steel reinforcement in huge rod structure, under can increasing between six~step 7 the above-mentioned basic skills the step of
State process：
6a blocks the longitudinal reinforcement and stirrup of connection according to design length, and welding or sleeve connection steel reinforcement cage（Steel
Muscle cage）；
6b enters reinforcing bar cage hoisting in cavity and either welding or overlap joint are connected as entirety with sleeve.
Above-described embodiment content is not used only to facilitate the embodiment for understanding technical scheme and using
It is of the invention in limiting.Any those skilled in the art to which this invention pertains, disclosed core skill is not being departed from
On the premise of art scheme, any modification and change, but the protection that the present invention is limited can be made in the form and details of implementation
Scope, the scope that must be still limited by appended claims are defined.
Claims (6)
- A kind of 1. huge post of multi-cavity tube-in-tube armored concrete of space constraint, it is characterised in that：IncludingCore concrete filled steel tube part, wherein, core steel pipe forms inner cavity chamber, be filled with the inner cavity chamber inner chamber concrete and There is the framework of steel reinforcement of insertion in the middle part of inner cavity chamber；And outside steel pipe concrete parts, wherein, exocoel is formed between the core steel pipe and the outside steel pipe, it is described outer Framework of steel reinforcement filled with exocoel concrete and at least one insertion in chamber；Connect to form space steel-tube construction by vertical connecting plate between the core steel pipe and the outside steel pipe；The vertical connecting plate is more than 2 pieces, every piece of vertical connecting plate at least one hole；The exocoel at least one piece of lateral partitions, the lateral partitions are connected with outside steel pipe or vertical connecting plate；The framework of steel reinforcement is formed by penetrating vertical muscle and insertion stirrup.
- 2. the huge post of multi-cavity tube-in-tube armored concrete of space constraint according to claim 1, it is characterised in that：The horizontal stroke At least one hole on to dividing plate.
- 3. the huge post of multi-cavity tube-in-tube armored concrete of space constraint according to claim 1, it is characterised in that：The core There is interior steel pipe diaphragm plate between heart steel pipe.
- 4. the huge post of multi-cavity tube-in-tube armored concrete of space constraint according to claim 3, it is characterised in that：The core At least more than one peg on heart steel pipe, outside steel pipe, vertical connecting plate, lateral partitions and interior steel pipe diaphragm plate.
- 5. the huge post of multi-cavity tube-in-tube armored concrete of space constraint according to claim 1, it is characterised in that：In described The label of chamber concrete and exocoel concrete is not less than C30, and inner chamber concrete grade is higher than exocoel concrete grade.
- 6. the construction of the huge post of multi-cavity tube-in-tube armored concrete of the space constraint according to claim 1 to 5 any one Method, it is characterised in that step is as follows：Step 1: factory's piecemeal is cut into the steel plate of core steel pipe, the steel plate of outside steel pipe, vertical connecting plate, lateral partitions；Step 2: the steel plate of core steel pipe and the steel plate of outside steel pipe are worked into predetermined shape, and in vertical connecting plate and horizontal stroke Punched on to dividing plate；Step 3: the steel plate of steel plate, outside steel pipe above-mentioned core steel pipe, vertical connecting plate, lateral partitions are welded together, Outer steel pipe module, interior steel pipe module is made；Step 4: in the outer surface Construction corrosion prevention priming paint of outer steel pipe module；Step 5: outer steel pipe module and interior steel pipe module are transported to job site；It is Step 6: outer steel pipe module and interior steel pipe mould Site Welding is integral；Step 7: toward casting concrete in chamber, concrete is injected with slip casing by pressure pipe, concrete is Down-Up jacked and poured, Or casting concrete, and vibrating from top to bottom；Step 8: curing concrete is to predetermined strength；Step 9: to the outer surface Construction corrosion prevention finish paint of outside steel pipe,Step 10: the appearance surface construction fire proofing material to outside steel pipe.
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