CN109138273A - Star section acra outsourcing channel steel concrete combined special-shaped column and its construction method - Google Patents
Star section acra outsourcing channel steel concrete combined special-shaped column and its construction method Download PDFInfo
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- CN109138273A CN109138273A CN201811128390.5A CN201811128390A CN109138273A CN 109138273 A CN109138273 A CN 109138273A CN 201811128390 A CN201811128390 A CN 201811128390A CN 109138273 A CN109138273 A CN 109138273A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- 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
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Abstract
The invention discloses star section acra outsourcing channel steel concrete combined special-shaped column and its construction methods, belong to building field, star section acra outsourcing channel steel concrete combined special-shaped column includes pedestal and the cross Special-Shaped Column being vertically mounted on pedestal.Its construction method includes: assembling reinforcement bone → be assembled into combination cross steel skeleton → erection template → moulding by casting.Channel steel is wrapped on the outside of Special-Shaped Column acra by the application using steel-concrete combined structure Special-Shaped Column, working procedure is relatively simple, reinforcing bar binds identical as the reinforcing bar of ordinary reinforced concrete Special-Shaped Column binding difficulty, outsourcing channel steel can be pre-fabricated, on-site consolidation again, and it is hindered in beam column infall without extra Steel material, there is no inner space deficiencies, reinforcing bar be not easy across the problem of, it effectively solves the problems, such as that the steel skeleton of steel reinforced concrete special-shaped columns is more complex and causes construction inconvenient, saves construction time and cost；Effectively improve ordinary reinforced concrete Special-Shaped Column anti-seismic performance.
Description
Technical field
The present invention relates to a kind of building engineering field, especially a kind of star section acra outsourcing channel steel concrete combination
Special-Shaped Column and its construction method.
Background technique
Special-Shaped Column refers to that column section is L shape, cross, cross, and the ratio between section height and limb thickness are less than or equal to 4 column.
The limb thickness of Special-Shaped Column is usually consistent with wall thickness, avoids pillar protrusion wall so that building interior is both beautiful, while also between
It connects and increases the use space in room, therefore, Special-Shaped Column is in building using possessing irreplaceable superiority in function, it is easy to
By the popular welcome of user and developer, thus it is used widely in practical projects.
But due to the scrambling of existing special-shaped column section, stress is unreasonable, and limb thickness is smaller, makes it in geological process
Under first acra foot destroy, and then cause pillar integrally destroy quickly, anti-seismic performance is generally not so good as rectangular section column.
In order to optimize special-shaped column structure performance further, expand application range, many scholars have carried out a large amount of examination
It tests and theoretical research, proposes some new structure types and construction method, such as steel reinforced concrete special-shaped columns, concrete filled steel tube
Special-Shaped Column etc.；Although these new structure situations can solve the problems, such as that Special-Shaped Column anti-seismic performance is insufficient to a certain extent, same
When also bring the problem of construction space deficiency, thick to limb general only the house fashioned iron or steel pipe concrete profiled pile of 200mm
Structure, should have fashioned iron or steel pipe to pass through at node, have the longitudinal reinforcement of beam column to cross through again, be unthinkable gather around
It squeezes, or even is difficult to implement in practical projects.
The defect of production Special-Shaped Column and its construction method commonly used in the prior art is:
(1) ordinary reinforced concrete Special-Shaped Column, by reinforcing bar by the shape binding across or other shapes of Special-Shaped Column, Gu
It is scheduled on design position, then has reinforcing bar to pass through in concrete, concreting is more convenient, since limb thickness is relatively thin, when destruction
Generally it is crushed first in the concrete of acra, bearing capacity is lower, cannot be using 12 layers of building be higher than, poor seismic behavior cannot
For being higher than 8 degree of earthquake territories.
(2) steel reinforced concrete special-shaped columns, i.e., in the embedding fashioned iron of inside concrete, such form structure is complex, in addition
Special-Shaped Column inner space folder is small, especially more crowded inside the node location of beam column junction, brings difficulty to construction, constructs
When cross-sectional internal fashioned iron hinder the vibration compacting of concrete, in the embedding fashioned iron of inside concrete, concrete is wrapped up around fashioned iron, type
Steel is not exposed, there is abdomen formula and an open web type, and fashioned iron not connectors such as weld stud, bearing capacity is larger, good seismic performance, but due to
Inside has fashioned iron to pass through, it obstructs the binding of reinforcing bar again passes through the reinforcing bar for hindering beam in the fashioned iron of beam column infall column.When cut
When face is smaller, it is likely to result in the disadvantage of thickness of concrete cover deficiency, simultaneously as the section of Special-Shaped Column is complicated, accordingly
Steel skeleton also interfere vibration island device insertion, the vibration island for being unfavorable for concrete is closely knit, is unfavorable for the guarantee of construction quality.
(3) steel pipe concrete profiled pile is disposed with steel pipe in shaped rc columns, interior fill concrete, between steel pipe
It is connected with component, working procedure is more, and difficulty is big, and anti-seismic performance is good, and bearing capacity is high, and hindering for steel pipe makes beam column infall reinforcing bar
It is not easy across taking complicated measure.It is generally unsuitable for the lesser special-shaped column structure of house cross-section, is only applicable to large size
Special-Shaped Column.
Patent No. 201721687444.2, the earlier application of entitled steel pipe concrete profiled pile, main technical point
It is muti-piece reinforcement welding in periphery, although solving the advantage of traditional Special-Shaped Column anti-seismic performance deficiency to a certain extent, its
There is also shortcomings, the Special-Shaped Column of mainly pure encased steel plate is in actual use process and work progress by very big limit
System, firstly, secondly, leak be easy to cause steel plate to get rusty, appearance is influenced by large area using being not easy to plaster in house；Most
Afterwards, the steel plate of outsourcing needs plurality of steel plates to carry out welding fabrication, and the very complicated complexity of workload greatly improves in practical applications
Construction cost；Patent No. 201611266329.8, patent name are the earlier application of L shape aluminium alloy concrete profiled pile,
Its technical point is also metal outsourcing, other than disadvantage mentioned above, the outer surface in this application not in the same plane,
Practice of construction process also needs in addition to plaster for groove, further increases work difficulty.
For disadvantage of the existing technology, the present invention provides a kind of technical ability and improves special-shaped column structure performance to be conducive to apply again
The new structure type and method of work, it is intended that solve defect of the existing technology.
Summary of the invention
The invention discloses a kind of star section acra outsourcing channel steel concrete combined special-shaped column and its construction methods, answer
Channel steel is wrapped on the outside of Special-Shaped Column acra with steel-concrete combined structure Special-Shaped Column, channel steel and concrete pass through welding of peg
Part be connected, will not because channel steel is embedded in inside concrete cause crowded inside concrete reinforcing bar, insufficient space the problems such as；To realize
Above-mentioned purpose, the technical solution of the present invention is as follows:
A kind of star section acra outsourcing channel steel concrete combined special-shaped column, the star section acra outsourcing channel steel
Concrete combined special-shaped column includes pedestal and the cross Special-Shaped Column being vertically mounted on pedestal；
The angle of four acras of the cross Special-Shaped Column formation, the acra and acra is 90 °, four acras
Length and width it is all the same, four acras are respectively disposed with flute profile fashioned iron, and the flute profile fashioned iron covers outside four acras,
The recess of the flute profile fashioned iron is towards cross Special-Shaped Column center, and the flute profile fashioned iron hollow back is to exposing to cross Special-Shaped Column four
Outside a acra；
The flute profile fashioned iron width is identical as the cross Special-Shaped Column concrete acra.
Preferably, flute profile fashioned iron concave surface is welded with several Welded-Stud Conectors, the Welded-Stud Conectors and flute profile type
Steel vertical welding, the Welded-Stud Conectors are embedded in the concrete, and the Welded-Stud Conectors include integrally formed connecting rod
With the peg head in connecting rod one end, described connecting rod one end is vertically welded in the recess of flute profile fashioned iron, the other end and peg
Connection, the vertical section of the peg are bigger than the vertical section of connecting rod.
Preferably, the cross Special-Shaped Column is made of default bar construction and mixed mud, the default bar construction packet
The cross u stirrup of longitudinal reinforcement and transverse direction, the Welded-Stud Conectors and cross u stirrup lateral alternate are included, not in same plane
It is interior.
Preferably, the pedestal is cross-shaped structure, and the pedestal section is greater than the cross Special-Shaped Column upright projection
Section；Multiple preformed holes are provided on the pedestal, the positioning for longitudinal reinforcement.
Preferably, the cross Special-Shaped Column is divided into upper and lower part lateral tie encrypted area, the flute profile type of the outsourcing
The adjacent spacing between any two of Welded-Stud Conectors that steel lower part is located at cross Special-Shaped Column encrypted area is less than top Welded-Stud Conectors phase
Adjacent spacing between any two.
Preferably, the connection pole length is 8-15cm, and the peg is provided in round ferrule or right-angled intersection connects
The steel bar piece connect.
The construction method of star section acra outsourcing channel steel concrete combined special-shaped column,
The construction method the following steps are included:
(1) assembling reinforcement bone:
Several rectangles are bent into after being segmented stirrup by design requirement, and two-by-two across be staggeredly inserted in order it is pre-
On the longitudinal reinforcement first arranged；
Then several vertical reinforcements and the lateral cross u stirrup of several circles are bound into across reinforcement cage skeleton；
(2) flute profile fashioned iron, Welded-Stud Conectors and production pedestal are customized；
(3) flute profile fashioned iron and Welded-Stud Conectors weld: by the equidistant vertical welding of Welded-Stud Conectors in flute profile fashioned iron concave surface
Center；
(4) pedestal, flute profile fashioned iron are assembled into reinforcement cage skeleton and combine cross steel skeleton and flute profile fashioned iron is vertical
It is welded on pedestal；
(5) concrete blinding is set up by the requirement of cross Special-Shaped Column；
(6) it is poured concrete formation, template is removed after maintenance and is become as star section acra outsourcing channel steel concrete group
Close Special-Shaped Column.
Preferably, the pedestal production in the step (2), the pedestal are designed as cross, and the pedestal cross is cut
Face is greater than the cross abnormity column section；The base upper surface is preset with multiple preformed holes for positioning longitudinal reinforcement.
Preferably, the Welded-Stud Conectors in the step (3) and flute profile fashioned iron weld, by under cross Special-Shaped Column when welding
Mutual spacing is less than the spacing welding of top Welded-Stud Conectors between any two to the Welded-Stud Conectors of portion encrypted area two-by-two；
Preferably, the erection template in the step (5) is between the adjacent flute profile section steel edge on cross steel skeleton
Rectangle template is installed, i.e. rectangle template and four flute profile fashioned iron surrounds cross periphery, the rectangle mould jointly
It is connected and fixed between plate and template with iron wire.
Related description of the invention, flute profile fashioned iron are combined with concrete profiled pile or beam bottom portion by Shear connection key connection
Stress, this structure and steel reinforced concrete special-shaped columns have apparent difference in appearance in form, and fashioned iron is only arranged in column acra, and
It is not obviously to be divided into steel construction and concrete structure on section in Transducers Embedded in Concrete, and there is no steel reinforced concrete special-shaped columns knot
Structure is such to lead to the crowded brought constructional difficulties problem in space due to internal embedding fashioned iron, meanwhile, fashioned iron is arranged in different
The acra of shape column can reinforce the stress of acra well, so that it will not as shaped rc columns under geological process
It is destroyed first in outlimb.This programme effectively increases bearing capacity and anti-seismic performance compared with armored concrete；With fashioned iron coagulation
Soil is compared, and solves the problem of crowded inside the node location of beam column junction, constructional difficulties.
The invention has the benefit that
(1) Special-Shaped Column described herein is that channel steel is wrapped in Special-Shaped Column acra by steel-concrete combined structure Special-Shaped Column
Outside, channel steel are connected with concrete by Welded-Stud Conectors, will not cause inside concrete because channel steel is embedded in inside concrete
The problem of reinforcing bar is crowded, insufficient space；Channel steel be in concrete outside simultaneously, will not interfere passing through for reinforcing bar at bean column node.
(2) for Special-Shaped Column of the present invention convenient for construction, the steel skeleton for effectively solving steel reinforced concrete special-shaped columns is more complex
And the problem for causing construction inconvenient, save construction time and cost；Steel concrete deformed pile structure anti-seismic performance is effectively improved,
Effectively improve steel concrete deformed pile structure bearing capacity；SCC cross section column negative peak load is compared with RC ten under identical axial compression ratio
Font column improves 1.4-1.6 times.
(3) Special-Shaped Column of the invention energy consumption and ductility are obviously improved compared with normal concrete Special-Shaped Column, general under identical axial compression ratio
Logical cross concrete profiled pile forward direction ductility factor is 2.49-2.89, and the special-shaped cylindricality column forward direction ductility factor of the present invention reaches
To 3.90-4.28,48.09%-56.62 is improved, ductile performance is good.
(4) Special-Shaped Column working procedure of the present invention is relatively simple, the reinforcing bar of reinforcing bar binding and ordinary reinforced concrete Special-Shaped Column
Binding difficulty is identical, and outsourcing channel steel can be pre-fabricated, assembled at the scene；And it is hindered in beam column infall without extra Steel material
Hinder, there is no reinforcing bar be not easy across the problem of.
(5) flute profile fashioned iron, the recess direction of channel steel are respectively arranged in four acras of the concrete profiled pile of star section
Concrete acra, covers on acra, and channel steel hollow back is to exposing to outside concrete；Good appearance, with ordinary reinforced concrete column phase
Than firmer, acra has channel steel protection, and anti-seismic performance is greatly improved.
(6) Special-Shaped Column of the invention resistance strength deterioration, Stiffness Deterioration ability are good compared with normal concrete Special-Shaped Column, positive
Bearing capacity reduces 2.3-2.5 times that coefficient is normal concrete Special-Shaped Column, and curve decline is gentle, shows good anti-carrying
Power degeneration, Stiffness Deterioration ability.
Detailed description of the invention
Fig. 1 is flute profile fashioned iron and Welded-Stud Conectors structural schematic diagram；
Fig. 2 is the Special-Shaped Column fractionation structural representation of present invention casting concrete；
Fig. 3 is construction method flowage structure schematic diagram of the present invention；
Fig. 4 is construction method flow chart of the present invention.
Figure label: 100- flute profile fashioned iron, 200- Welded-Stud Conectors, 201- connecting rod, 202- peg, 300- cross hoop
Muscle, 400- longitudinal reinforcement, 500- pedestal, 600- template, 700- mixed mud column.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, referring to the drawings and preferred reality is enumerated
Example is applied, the present invention is described in more detail.However, it is necessary to illustrate, many details listed in specification are only to be
Reader is set to have a thorough explanation to one or more aspects of the present invention, it can also be with even without these specific details
Realize the aspects of the invention.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "left", "right", level "
The orientation or positional relationship of equal instructions is to be based on the orientation or positional relationship shown in the drawings, be merely for convenience of the description present invention and
Simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construction
And operation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be spiral shell
It tethers and connects, be also possible to be welded to connect；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood at this as the case may be
Concrete meaning in invention.
Below in conjunction with attached drawing, invention is further described in detail, but not as a limitation of the invention.
In conjunction with shown in Fig. 1-Fig. 4,
A kind of star section acra outsourcing channel steel concrete combined special-shaped column, the star section acra outsourcing channel steel
Concrete combined special-shaped column includes pedestal 500 and the cross Special-Shaped Column being vertically mounted on pedestal 500；
In conjunction with shown in Fig. 1-4；The cross Special-Shaped Column forms four acras, and the angle of the acra and acra is
90 °, the length and width of four acras are all the same, and four acras are respectively disposed with flute profile fashioned iron 100, the flute profile
100 sets of fashioned iron outside four acras, the recess of the flute profile fashioned iron 100 is towards cross Special-Shaped Column center, the flute profile fashioned iron
100 hollow backs are to exposing to outside four acras of cross Special-Shaped Column；
Several parallel longitudinal reinforcements in longitudinal direction 400 and several circles are evenly distributed in the cross Special-Shaped Column laterally
Cross u stirrup 300 and be cast with concrete；
100 width of flute profile fashioned iron is identical as the cross Special-Shaped Column concrete acra.
It is composed by using flute profile fashioned iron 100 and cross steel concrete deformed pile structure；Member section is ten
Font；Four acras of cross concrete profiled pile are wrapped in outside channel steel；Pass through Welded-Stud Conectors 200 between concrete and channel steel；
The recess of flute profile fashioned iron 100 covers on acra towards concrete acra, and 100 hollow back of flute profile fashioned iron is to exposing to outside concrete；Slot
100 width of shape fashioned iron is identical as concrete acra, and flute profile fashioned iron 100 and pedestal 500 pass through welded connecting.It constructs in above scheme
Convenient, the inner space that can effectively solve steel reinforced concrete special-shaped columns is narrow, the more complex problem for causing construction inconvenient of steel skeleton.
Effectively improve the anti-seismic performance of shaped rc columns.The bearing capacity of shaped rc columns is effectively improved convenient for developing into
For fabricated construction.This motion using being wrapped in cruciform reinforcement concrete profiled pile acra outside flute profile fashioned iron 100, channel steel width with
Concrete acra is identical, effectively solves fashioned iron and passes through inside concrete profiled pile, and bring construction space is insufficient, and caused by steel
Muscle binding is difficult, inconvenient problem of constructing.Channel steel in combined steel and concrete column can undertake a part of construction loads, can be used as
Segment template when construction accelerates speed of application.Slot is just outer to be wrapped in acra, avoids broken in outlimb first under geological process
It is bad, the bearing capacity of shaped rc columns is effectively improved, the anti-seismic performance of shaped rc columns is effectively improved.
Preferably, 100 concave surface of flute profile fashioned iron is welded with several Welded-Stud Conectors 200, the Welded-Stud Conectors 200
With 100 vertical welding of flute profile fashioned iron, the Welded-Stud Conectors 200 are embedded in the concrete, and the Welded-Stud Conectors 200 include
Integrally formed connecting rod 201 and the peg head 202 in connecting rod one end, described 201 one end of connecting rod are vertically welded in flute profile
In the recess of fashioned iron 100, the other end is connect with peg 202, and the vertical section of the peg 202 is cut than the vertical of connecting rod 201
Face is big.By the peg 202 of setting, preferably pre-buried nail connector 200 can be fixed, fixed with built-in transverse
Effect.Peg head uses and is arranged the cohesive force increased with concrete, so that Special-Shaped Column overall structure is more firm.
Preferably, the cross Special-Shaped Column includes the cross u stirrup 300 of built-in longitudinal reinforcement 400 and transverse direction, institute
Welded-Stud Conectors 200 and 300 lateral alternate of cross u stirrup are stated, not in the same plane, avoid constructing crowded.It is arranged in a staggered manner and keeps away
It is crowded and increase the integrally-built cohesive force of Special-Shaped Column interior construction has been exempted from.
Preferably, the pedestal 500 is cross character form structure, and 500 section of pedestal is greater than the cross Special-Shaped Column
Upright projection section；Multiple preformed holes are provided on the pedestal 500, the positioning for longitudinal reinforcement 400.
Preferably, the cross Special-Shaped Column is divided into upper and lower part lateral tie encrypted area, the flute profile type of the outsourcing
The adjacent spacing between any two of Welded-Stud Conectors 200 that 100 lower part of steel is located at cross Special-Shaped Column encrypted area connects less than top peg
The adjacent spacing between any two of fitting 200.This setting be since special-shaped column bottom bearing capacity is greater than top in practical applications, therefore
This Special-Shaped Column protects the stability of whole pillar entirety according to reinforced region is actually also equipped with.
Preferably, 201 length of connecting rod is 8-15cm, and the peg 202 is provided in round ferrule or cross
The steel bar piece of interconnection.The peg head is provided in round the steel bar piece of ferrule or right-angled intersection connection, the shape
For preferred embodiment shape, but the guarantor to other shapes such as triangle or taper and other shapes being more suitable for is not interfered
Shield.
The construction method of star section acra outsourcing channel steel concrete combined special-shaped column, comprising the following steps:
(1) assembling reinforcement bone:
Several rectangles are bent into after being segmented stirrup by design requirement, and two-by-two across be staggeredly inserted in order it is pre-
On the longitudinal reinforcement 400 first arranged；
Then several vertical reinforcements and the lateral cross u stirrup 300 of several circles are bound into across reinforcement cage skeleton；
(2) flute profile fashioned iron 100, Welded-Stud Conectors 200 and production pedestal 500 are customized；
(3) flute profile fashioned iron 100 and Welded-Stud Conectors 200 weld: by the equidistant vertical welding of Welded-Stud Conectors 200 in flute profile
100 concave surface center of fashioned iron；
(4) pedestal 500, flute profile fashioned iron 100 are assembled into reinforcement cage skeleton and combine cross steel skeleton and by flute profile type
100 vertical welding of steel is on pedestal 500；
(5) concrete blinding 600 is set up by the requirement of cross Special-Shaped Column；
(6) it is poured concrete formation, template 600 is removed after drying and is become as star section acra outsourcing channel steel concrete
Combined special-shaped column.
Preferably, the pedestal 500 in the step (2) makes, and the pedestal 500 is designed as cross, the pedestal 500
Star section is greater than the cross abnormity column section；500 upper surface of pedestal is preset with multiple preformed holes for positioning
Longitudinal reinforcement 400.
Preferably, the Welded-Stud Conectors 200 in the step (3) and groove profile fashioned iron weld, by cross abnormity when welding
Mutual spacing is less than top Welded-Stud Conectors 200 between any two to the Welded-Stud Conectors 200 of column lower part encrypted area two-by-two
Spacing welding；
Preferably, the erection template 600 in the step (5) is the adjacent flute profile fashioned iron 100 on cross steel skeleton
Rectangle template 600 is installed, i.e. rectangle template 600 and four flute profile fashioned iron 100 is encircled a city outside cross jointly between side
It encloses, is connected and fixed between the rectangle template 600 and template 600 with iron wire.
The steel-concrete combined structure Special-Shaped Column working procedure of the application motion is relatively simple, reinforcing bar binding and ordinary steel
The reinforcing bar binding difficulty of reinforced concrete Special-Shaped Column is identical, and outsourcing channel steel can be pre-fabricated, assembled at the scene.And it is handed in beam column
At fork without extra Steel material hinder, there is no reinforcing bar be not easy across the problem of.Using channel steel and cross armored concrete abnormity
Rod structure is composed；Member section is cross；Four acras of cross concrete profiled pile are wrapped in outside channel steel；Concrete with
It is connected between channel steel by peg；The recess of channel steel covers on acra towards concrete acra, and channel steel hollow back is to exposing to coagulation
It is native outer；Channel steel width is identical as concrete acra.Channel steel and pedestal pass through welded connecting.
Made by features described above easy for construction, the inner space that can effectively solve steel reinforced concrete special-shaped columns is narrow, steel
The more complex problem for causing construction inconvenient of skeleton.Effectively improve the anti-seismic performance of shaped rc columns.Effectively improve reinforcing bar
The bearing capacity of concrete profiled pile is convenient for developing into fabricated construction.
This motion is wrapped in cruciform reinforcement concrete profiled pile acra, channel steel width and concrete limb using flute profile fashioned iron outside
Hold identical, effectively solve fashioned iron and pass through inside concrete profiled pile, bring construction space is insufficient, and caused by reinforcing bar binding it is tired
Difficulty, inconvenient problem of constructing.Channel steel in combined steel and concrete column can undertake a part of construction loads, when can be used as construction
Segment template accelerates speed of application.Slot is just outer to be wrapped in acra, avoids destroying in outlimb first under geological process, effectively mention
The bearing capacity of high shaped rc columns effectively improves the anti-seismic performance of shaped rc columns.
By experiment made 1 ordinary reinforced concrete star section Special-Shaped Column (abbreviation RC cross section column), 3 it is existing
Pour formula star section acra outsourcing channel steel concrete combined special-shaped column (abbreviation SCC cross section column) and 2 prefabricated assembled ten
Shaped sections acra outsourcing channel steel concrete combined special-shaped column (abbreviation PSCC cross section column), and carry out low cycle repetitive load examination
It tests, studies the anti-seismic performances such as its bearing capacity, ductility, energy consumption, Stiffness Deterioration, show that Main Conclusions is as follows:
(1) SCC cross section column acra outsourcing channel steel plays a very good protection to its acra weakness, and suspension column is finally broken
Bad situation is light compared with RC cross section column, and concrete surface crushing external drum is then peeled off when destruction, and channel steel, which constrains acra concrete, to be made
With obvious, there is not the completely peeled off situation of RC cross section column web edge concrete, bearing capacity has very compared with RC cross section column
Big to improve, SCC cross section column negative peak load improves 1.4-1.6 times compared with RC cross section column under identical axial compression ratio.
(2) web and the edge of a wing this shaped-steel layout of outsourcing channel steel substantially improve the mechanical characteristic of cross shaped column, make
Obtaining its positive negative sense bearing capacity asymmetry situation has larger improvement.Positive negative sense ultimate bearing capacity is not much different, hysteresis loop, skeleton
Curve, strength deterioration and Stiffness Deterioration curve are symmetrical compared with RC cross section column.
(3) energy consumption of SCC cross section column and ductility are obviously improved compared with RC cross section column.SCC cross section column hysteresis loop is full,
Equivalent viscous ratio RC cross section column is big, and energy-dissipating property is good；RC cross section column forward direction ductility system under identical axial compression ratio
Number is 2.49-2.89, and SCC cross section column forward direction ductility factor reaches 3.90-4.28, is respectively increased compared with RC cross section column
48.09%-56.62, ductile performance are good.
(4) it is good compared with RC cross section column to resist strength deterioration, Stiffness Deterioration ability for SCC cross section column.In identical axial compression ratio
Lower SCC cross section column bearing capacity reduction coefficient, average loop wire conversion rigidity are substantially bigger than RC cross section column, last displacement level
Shi Zhengxiang rigidity improves 29.8%-31.8% on the basis of RC cross 1, and it is RC ten that third, which recycles positive bearing capacity and reduces coefficient,
2.3-2.5 times of font column, and curve decline is gentle, shows good anti-strength deterioration, Stiffness Deterioration ability.
(5) in the case of identical steel ratio, axial compression ratio is bigger, star section acra outsourcing channel steel concrete combined special-shaped column
Yield load is higher, and the energy dissipation capacity of single hysteretic loop also becomes larger, but ductility is deteriorated, and strength deterioration, Stiffness Deterioration become faster.
(6) increase steel ratio, the seismic bearing capacity of test specimen is obviously improved.Such as when axial compression ratio is identical, SCC cross 3 exists
32.6%-31.6%, 19.6%-21.6% has been respectively increased compared with 2 shape column of SCC cross in yield point and peak point average load.
(7) PSCC cross section column has good anti-seismic performance as SCC cross section column.Ultimate bearing capacity and SCC ten
Font base for post sheet is suitable, at yield point, peak point average load value difference be no more than 5%-7%, ductility, energy consumption, Stiffness Deterioration,
The items anti-seismic performance index ratio SCC cross section column such as strength deterioration is slightly poor, and suspension column pre-erection junction is not broken when destruction
Bad sign illustrates that such PSCC cross section column is feasible.
(8) RC cross section column, SCC cross section column and PSCC cross section column substantially conform to plane cross-section assumption in the power control stage,
Web concrete, reinforcing bar and channel steel measuring point strain variation are more synchronous, show power control stage channel steel and concrete collaborative work energy
Power is preferable.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the principle of the present invention, it can also make several improvements and retouch, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of star section acra outsourcing channel steel concrete combined special-shaped column, the star section acra outsourcing channel steel is mixed
Solidifying soil combined special-shaped column includes pedestal and the cross Special-Shaped Column being vertically mounted on pedestal；It is characterized by:
The angle of four acras of the cross Special-Shaped Column formation, the acra and acra is 90 °, the length of four acras
Degree is all the same with width, and four acras are respectively disposed with flute profile fashioned iron, and the flute profile fashioned iron covers outside four acras, described
The recess of flute profile fashioned iron is towards cross Special-Shaped Column center, and the flute profile fashioned iron hollow back is to exposing to four limbs of cross Special-Shaped Column
End is outer；
The flute profile fashioned iron width is identical as the cross Special-Shaped Column concrete acra thickness.
2. star section acra outsourcing channel steel concrete combined special-shaped column according to claim 1, it is characterised in that:
Flute profile fashioned iron concave surface is welded with several Welded-Stud Conectors, the Welded-Stud Conectors and flute profile fashioned iron vertical welding,
The Welded-Stud Conectors are embedded in the concrete, and the Welded-Stud Conectors include integrally formed connecting rod and in connecting rod one
The peg head at end, described connecting rod one end are vertically welded in the recess of flute profile fashioned iron, and the other end is connect with peg, the peg
Vertical section it is bigger than the vertical section of connecting rod.
3. star section acra outsourcing channel steel concrete combined special-shaped column according to claim 2, it is characterised in that:
The cross Special-Shaped Column by default bar construction and coagulation local soil type at, the default bar construction include longitudinal reinforcement and
Lateral cross u stirrup, the Welded-Stud Conectors and cross u stirrup lateral alternate, not in the same plane.
4. star section acra outsourcing channel steel concrete combined special-shaped column according to claim 1, it is characterised in that:
The pedestal is cross-shaped structure, and the pedestal section is greater than the cross Special-Shaped Column upright projection section；The bottom
Multiple preformed holes are provided on seat, the positioning for longitudinal reinforcement.
5. star section acra outsourcing channel steel concrete combined special-shaped column according to claim 1, it is characterised in that:
The cross Special-Shaped Column is divided into upper and lower part lateral tie encrypted area, and the flute profile fashioned iron lower part of the outsourcing is located at ten
It is adjacent between any two that the Welded-Stud Conectors of font Special-Shaped Column encrypted area adjacent spacing between any two is less than top Welded-Stud Conectors
Spacing.
6. star section acra outsourcing channel steel concrete combined special-shaped column according to claim 2, it is characterised in that:
The connection pole length is 8-15cm, and the peg is provided in round the steel bar piece of ferrule or right-angled intersection connection.
7. the construction of star section acra outsourcing channel steel concrete combined special-shaped column according to claim 1-6
Method, it is characterised in that:
The following steps are included:
(1) assembling reinforcement bone:
Be bent into several rectangles, and across is staggeredly inserted in preparatory cloth in order two-by-two after stirrup being segmented by design requirement
On the longitudinal reinforcement set；
Then several vertical reinforcements and the lateral cross u stirrup of several circles are bound into across reinforcement cage skeleton；
(2) flute profile fashioned iron, Welded-Stud Conectors and production pedestal are customized；
(3) flute profile fashioned iron and Welded-Stud Conectors weld: by Welded-Stud Conectors vertical welding in flute profile fashioned iron concave surface center, and it is same
On straight line；
(4) pedestal, flute profile fashioned iron are assembled into reinforcement cage skeleton and combine cross steel skeleton and by flute profile fashioned iron vertical welding
In on pedestal；
(5) concrete blinding is set up by the requirement of cross Special-Shaped Column；
(6) be poured concrete formation, removed after maintenance template become for star section acra outsourcing channel steel concrete combine it is different
Shape column.
8. the construction method of combined special-shaped column according to claim 7, it is characterised in that:
Pedestal production in the step (2), the pedestal are designed as cross, and the pedestal star section is greater than described ten
Font abnormity column section；The base upper surface is preset with multiple preformed holes for positioning longitudinal reinforcement.
9. the construction method of combined special-shaped column according to claim 7, it is characterised in that:
Welded-Stud Conectors in the step (3) and groove profile fashioned iron weld, by cross Special-Shaped Column lower part encrypted area when welding
Mutual spacing is less than the spacing welding of top Welded-Stud Conectors between any two to Welded-Stud Conectors two-by-two.
10. the construction method of combined special-shaped column according to claim 7, it is characterised in that:
Erection template in the step (5) is the installation rectangle mould between the adjacent flute profile section steel edge on cross steel skeleton
Plate, i.e. rectangle template and four flute profile fashioned iron surround cross periphery jointly, between the rectangle template and template
It is connected and fixed with iron wire.
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| CN201811128390.5A CN109138273A (en) | 2018-09-27 | 2018-09-27 | Star section acra outsourcing channel steel concrete combined special-shaped column and its construction method |
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