CN109537804A - A kind of partial precast shape steel-concrete combined beam and its construction method - Google Patents
A kind of partial precast shape steel-concrete combined beam and its construction method Download PDFInfo
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- CN109537804A CN109537804A CN201811389344.0A CN201811389344A CN109537804A CN 109537804 A CN109537804 A CN 109537804A CN 201811389344 A CN201811389344 A CN 201811389344A CN 109537804 A CN109537804 A CN 109537804A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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Abstract
The invention discloses a kind of partial precast shape steel-concrete combined beam and its construction methods, belong to technical field of buildings and technical field of structural engineering.Partial precast shape steel-concrete combined beam of the invention contains fashioned iron, prereinforced U_shaped concrete, the cast-in-place concrete being filled in inside prereinforced U_shaped concrete, cast-in-place concrete flange plate above cast-in-place concrete and outside fashioned iron and part is built in prereinforced U_shaped concrete, part is built in the framework of steel reinforcement of cast-in-place concrete flange plate, both having combined cast-type fashioned iron-, (bearing capacity is strong for beams of concrete, ductility is high, anti-seismic performance is good) it is (easy for construction with precast concrete beam, construction speed is fast, save labour) the advantages of, existing partial precast steel-concrete composite beam pre-erection is evaded well again and cast-in-place two parts bonding is bad, shearing resistance is weak, the weaker defect of overall performance, suitable for industrialized production, meet the trend of current building industrialization.
Description
Technical field
The present invention relates to a kind of partial precast shape steel-concrete combined beam and its construction methods, belong to technical field of buildings
And technical field of structural engineering.
Background technique
Cast-type shape steel-concrete combined beam is a kind of common form of steel-concrete composite beam, is mainly characterized by
Fashioned iron is configured in concrete, since concrete is in triaxial stress state under the constraint of fashioned iron, meanwhile, fashioned iron is by concrete packet
It wraps up in and is not susceptible to buckling, this combination is enabled to effectively improve bearing capacity, ductility and the anti-seismic performance of combination beam, because
This, shape steel-concrete combined beam can be applied in longspan structure, high level and super high-rise building.
But since node connects, more complex and process is lengthy and jumbled, and shape steel-concrete combined beam has constructional difficulties, builds
Speed is slow, the defects of a large amount of labour and economic costs need to be spent higher, limits its application in practical projects.
Prefabricated assembled concrete structure is the concrete structure using prefabricated components as main bearing member through being assembled,
Prefabricated assembled concrete combination beam be it is one such, due to its can prefabrication, joint connection in site, have it is easy for construction, build
The advantages that making fast speed, saving labour, and since its component used can be in plant produced, quality is more guaranteed, moreover it is possible to
The formwork at scene, the working procedure of demoulding are reduced, effectively reduces the building waste of construction site, therefore, China is currently big
Power promotes the use of precast concrete.
But prefabricated assembled concrete structure is poor with respect to cast-type type steel-concrete structure globality, many experts
It queries to its stability and anti-seismic performance.
And Japanese scholars are to solve the above problems, propose a kind of combination prefabricated assembled concrete combination beam and cast-type
The partial precast shape steel-concrete combined beam of shape steel-concrete combined beam, so that combination beam both has prefabricated assembled concrete
Beam is easy for construction, saves the advantage of manpower and cost, and has that cast-type fashioned iron-beams of concrete bearing capacity is strong, ductility is good
Advantage.
But the concrete of this beam is since there are prefabricated and cast-in-place two parts, two parts concrete is difficult to cooperate,
It easily leads to two parts concrete and sliding rupture occurs, greatly reduce the bearing capacity of structure.
Therefore, it is badly in need of finding and a kind of new solves existing partial precast shape steel-concrete combined beam two parts concrete
Bond that bad, shearing resistance is weak, the combination beam of the weaker problem of overall performance.
Summary of the invention
To solve the above problems, the present invention provides a kind of partial precast shape steel-concrete combined beam and its construction methods.
This combination beam had both combined fashioned iron-beams of concrete (bearing capacity is strong, ductility is high, anti-seismic performance is good) and precast concrete beam (construction
Conveniently, construction speed is fast, saves labour) the advantages of, and it is pre- to have evaded existing partial precast steel-concrete composite beam well
System part and cast-in-place two parts bond the defect that bad, shearing resistance is weak, overall performance is weaker, are suitable for industrialized production, meet
The trend of current building industrialization.
Technical scheme is as follows:
The present invention provides a kind of partial precast shape steel-concrete combined beam, the combination beam contains fashioned iron 1, prefabricated mixed
It is solidifying soil U-type groove 2, the cast-in-place concrete 3 being filled in inside prereinforced U_shaped concrete 2, cast-in-place above cast-in-place concrete 3
Concrete flange plate 4, and positioned at the outside of fashioned iron 1 and part be built in prereinforced U_shaped concrete 2, be partially built in it is cast-in-place mixed
The framework of steel reinforcement 5 of solidifying soil flange plate 4；
Several webs 8 of the fashioned iron 1 containing top flange plate 6, bottom wing listrium 7, connection top flange plate 6 and bottom wing listrium 7,
Positioned at bottom wing listrium 7 close to the both ends of framework of steel reinforcement 5 and through the bolt 9 of bottom wing listrium 7, and it is close positioned at top flange plate 6
The peg 10 at the both ends of framework of steel reinforcement 5；It is close to the bottom surface of 2 inner wall of prereinforced U_shaped concrete and institute in the bottom surface of the bottom wing listrium 7
Stating the top surface of bottom wing listrium 7, two sides opposite with web 8 with 2 inner wall of prereinforced U_shaped concrete form certain folder respectively
Angle 11；
The framework of steel reinforcement 5 is parallel to the vertical muscle 12 in 2 flute length direction of prereinforced U_shaped concrete containing four or four or more
And it is several perpendicular to bottom wing listrium 7 and around the closed stirrup 13 of vertical muscle 12.
In one embodiment of the invention, the prereinforced U_shaped concrete 2, cast-in-place concrete 3 and cast-in-place coagulation
The material of native flange plate 4 can be one of glass pumice concrete, haydite concrete or normal concrete or a variety of.
The glass pumice concrete is recorded in the patent application text of Publication No. CN108585682A.
In one embodiment of the invention, the material of the prereinforced U_shaped concrete 2 is normal concrete；It is described
The material of cast-in-place concrete 3 and cast-in-place concrete flange plate 4 is glass pumice concrete.
In one embodiment of the invention, the cast-in-place concrete flange plate 4 is parallel to bottom wing listrium 7.
In one embodiment of the invention, the top flange plate 6 is parallel to bottom wing listrium 7.
In one embodiment of the invention, the top flange plate 6 and bottom wing listrium 7 are isometric.
In one embodiment of the invention, the web 8 is perpendicular to bottom wing listrium 7.
In one embodiment of the invention, the web 8 is corrugated plating.
In one embodiment of the invention, the quantity of the web 8 is one and the web 8 can be by concrete
Native U-type groove 2, cast-in-place concrete 3, cast-in-place concrete flange plate 4, top flange plate 6, bottom wing listrium 7 and closed stirrup 13 1
It is divided into two.
In one embodiment of the invention, the bolt 9 is perpendicular to bottom wing listrium 7.
In one embodiment of the invention, the part that the bolt 9 is located at 7 lower section of bottom wing listrium is built in prefabricated mixed
Solidifying soil U-type groove 2, the part above bottom wing listrium 7 is built in cast-in-place concrete 3.
In one embodiment of the invention, the bolt 9 runs through bottom wing listrium 7 from bottom to up.
In one embodiment of the invention, arragement direction of the bolt 9 on bottom wing listrium 7 is parallel to prefabricated mixed
The flute length direction of solidifying soil U-type groove 2.
In one embodiment of the invention, the peg 10 is perpendicular to top flange plate 6.
In one embodiment of the invention, the peg 10 is welded in top flange plate 6 and is built in cast-in-place concrete
Flange plate 4.
In one embodiment of the invention, arragement direction of the peg 10 on top flange plate 6 is parallel to prefabricated
The flute length direction of concrete U-type slot 2.
In one embodiment of the invention, the angle 11 is obtuse angle.
In one embodiment of the invention, the vertical muscle 12 is partially built in concrete with closed stirrup 13
Native U-type groove 2 is partially built in cast-in-place concrete flange plate 4.
In one embodiment of the invention, the closed stirrup 13 is round rectangle；The quantity of the vertical muscle 12
It is located at the interior angle of closed stirrup 13 for four and four vertical muscle 12.
The present invention provides a kind of above-mentioned construction method of partial precast shape steel-concrete combined beam, the method is will
Vertical muscle 12 is bound with closed stirrup 13, forms framework of steel reinforcement 5, framework of steel reinforcement 5 is placed in by designed distance according to prefabricated
In the template that concrete U-type slot 2 makes；Web 8 is welded between top flange plate 6 and bottom wing listrium 7, at 7 liang of bottom wing listrium
Bolt 9 is arranged after the punching of end, and peg 10 is welded in 6 top surface of top flange plate, fashioned iron 1 is obtained, fashioned iron 1 is placed in by designed distance
In the template made according to prereinforced U_shaped concrete 2；By concreting in the template made according to prereinforced U_shaped concrete 2
Middle completion pre-erection, obtains prefabricated component；Prefabricated component is transported to construction site, prefabricated component is put into according to cast-in-place concrete 3
And in the template of the production of cast-in-place concrete flange plate 4, by concreting according to cast-in-place concrete 3 and cast-in-place concrete
In the template that flange plate 4 makes, obtain completing part.
The answering in terms of building the present invention provides above-mentioned partial precast shape steel-concrete combined beam or above-mentioned construction method
With.
The utility model has the advantages that
(1) prefabricated shape steel-concrete combined beam of the invention both combined cast-type fashioned iron-beams of concrete (bearing capacity is strong,
Ductility is high, anti-seismic performance is good) with precast concrete beam (easy for construction, construction speed is fast, saves labour) the advantages of, and very well
Evaded that existing partial precast steel-concrete composite beam pre-erection and cast-in-place two parts bonding are bad, shearing resistance is weak, whole
The weaker defect of performance is suitable for industrialized production, meets the trend of current building industrialization；
(2) when the span of the prefabricated shape steel-concrete combined beam of the present invention is 2500mm, the size in T-type section be 200mm ×
When 300mm × 800mm × 100mm, limit bending bearing capacity is up to 205.6kNm or so, and weight is only about
615.3kg performance is splendid；
(3) prefabricated shape steel-concrete combined beam of the invention has given full play to the performance of two kinds of materials of steel and concrete, will
Fashioned iron is wrapped in concrete, with reduce fashioned iron occur lateral buckling a possibility that and increase combination beam bearing capacity and prolong
Property, achieve the purpose that reduce combination depth of beam；
(4) prefabricated shape steel-concrete combined beam of the invention uses bolt-connected steel, precast concrete and cast-in-place mixed
Solidifying soil, to enhance the bonding at three interface, also, prefabricated shape steel-concrete combined beam of the invention is in the top flange plate of fashioned iron
Top is connected with peg, on the bottom wing listrium of fashioned iron through there is bolt so that fashioned iron can further increase precast concrete with
And the bonding at two interfaces of cast-in-place concrete, guarantee that two parts concrete works together, it is ensured that the normal use of combination beam and hold
Loading capability；
(5) the vertical muscle and closed stirrup that prefabricated shape steel-concrete combined beam of the invention uses run through concrete
Soil and cast-in-place concrete guarantee two parts coagulation to increase the bonding at two interfaces of precast concrete and cast-in-place concrete
Soil works together, it is ensured that the normal use and bearing capacity of combination beam, meanwhile, the prefabricated shape steel-concrete combined beam of the present invention
Presstressed reinforcing steel can be used in vertical muscle, to be applied to longspan structure；
(6) web that the prefabricated shape steel-concrete combined beam of the present invention uses is corrugated plating, and shearing strength is larger, therefore, existing
The optional lightweight concrete in part is poured, if glass pumice concrete is cast, further mitigates dead load and does not influence
Its structural behaviour, particularly suitable for skyscraper；
(7) the prefabricated part of the prefabricated shape steel-concrete combined beam of the present invention is U-shaped, and at the scene when casting concrete, it can
To replace template, facilitates construction and reduce cost, meanwhile, the prefabricated shape steel-concrete combined beam of the present invention can lead at the construction field (site)
Cross it is cast-in-place directly fashioned iron is connect with concrete it is integral.
Detailed description of the invention
Fig. 1 is the schematic perspective view of partial precast shape steel-concrete combined beam of the present invention；
Fig. 2 is the cross-sectional view of partial precast shape steel-concrete combined beam of the present invention；
Wherein, 1 fashioned iron, 2 prereinforced U_shaped concretes, 3 cast-in-place concretes, 4 cast-in-place concrete flange plates, 5 frameworks of steel reinforcement, 6
Top flange plate, 7 bottom wing listriums, 8 webs, 9 bolts, 10 pegs, 11 angles, 12 vertical muscle closed stirrups, 13 closed stirrups.
Specific embodiment
In order to have clearer understanding to technical solution of the present invention, purpose and effect, now in conjunction with attached drawing and embodiment
The present invention will be further elaborated:
Glass pumice concrete involved in following embodiments is recorded in the patent application of Publication No. CN108585682A
In text, every 1m3Contain glass pumice 400kg~500kg, sand 700kg~750kg, gel rubber material in the concrete
445kg~555kg, water 160kg~200kg and water-reducing agent 4.8kg.
Detection method involved in following embodiments is as follows:
Bending bearing capacity detection method:
Anti-bending bearing capacity experimental study is carried out to Beams test specimen, using two o'clock asymmetrical load mode, using 50t grades
Other hydraulic jack is loaded, and load is transferred at two load(ing) points of test specimen by distribution beam, is pacified at jack
Fill force snesor, range 100t, for measuring the payload values that beam is subject to；
Test use hierarchical loading, beam cracking before, every grade of increases 5kN of load, combination beam crack after until failing load
It is changed to every grade of 10kN, every grade of load duration is about 10min, and load terminates when concrete flange plate crushes；
Displacement meter is arranged at span centre and load(ing) point to measure beam in the displacement of simple bending section, foil gauge is arranged in
On test specimen span centre and the fashioned iron in load(ing) point section, vertical muscle and concrete；
Wherein, spaning middle section and load(ing) point section fashioned iron five foil gauges of top flange plate upper surface equidistant placement,
In bottom wing listrium lower surface five foil gauges of equidistant placement of the fashioned iron in spaning middle section and load(ing) point section, in spaning middle section and add
Two five foil gauges of lateral edge short transverse equidistant placement of ripple side plate of the fashioned iron in loading point section are cut in spaning middle section and load(ing) point
The tension in face indulges muscle and the vertical muscle that is pressurized arranges a foil gauge, meanwhile, in the pre-erection of spaning middle section and load(ing) point section
The two sides of concrete five foil gauges of equal equidistant placement, 3 foil gauges of bottom edge equidistant placement, in the cast-in-place coagulation of spaning middle section
Five foil gauges of equidistant placement at the top of the flange plate of soil, two sides one foil gauge of each equidistant placement.
Gravimetric analysis sensing method:
The weight of combination beam is calculated using estimation mode, i.e., first calculates the weight of each section material multiplied by volume with bulk density,
The weight of each section material is added up again and obtains the total weight of combination beam；
Wherein, the bulk density of normal concrete is 2400kg/m3, the bulk density of glass pumice concrete is 1800kg/m3, steel
Bulk density be 7850kg/m3。
Embodiment 1: partial precast shape steel-concrete combined beam of the invention
Such as Fig. 1-2, it is U-shaped that partial precast shape steel-concrete combined beam provided by the invention contains fashioned iron 1, precast concrete
Slot 2, the cast-in-place concrete 3 being filled in inside prereinforced U_shaped concrete 2, the cast-in-place concrete wing above cast-in-place concrete 3
Listrium 4, and positioned at the outside of fashioned iron 1 and part is built in prereinforced U_shaped concrete 2, is partially built in the cast-in-place concrete edge of a wing
The framework of steel reinforcement 5 of plate 4；
Several webs 8 of the fashioned iron 1 containing top flange plate 6, bottom wing listrium 7, connection top flange plate 6 and bottom wing listrium 7,
Positioned at bottom wing listrium 7 close to the both ends of framework of steel reinforcement 5 and through the bolt 9 of bottom wing listrium 7, and it is close positioned at top flange plate 6
The peg 10 at the both ends of framework of steel reinforcement 5；It is close to the bottom surface of 2 inner wall of prereinforced U_shaped concrete and institute in the bottom surface of the bottom wing listrium 7
Stating the top surface of bottom wing listrium 7, two sides opposite with web 8 with 2 inner wall of prereinforced U_shaped concrete form certain folder respectively
Angle 11；
The framework of steel reinforcement 5 is parallel to the vertical muscle 12 in 2 flute length direction of prereinforced U_shaped concrete containing four or four or more
And it is several perpendicular to bottom wing listrium 7 and around the closed stirrup 12 of vertical muscle 12.
As further preferred, the prereinforced U_shaped concrete 2, cast-in-place concrete 3 and cast-in-place concrete flange plate
4 material can be one of glass pumice concrete, haydite concrete or normal concrete or a variety of.
As further preferably, the material of the prereinforced U_shaped concrete 2 is normal concrete；The cast-in-place coagulation
The material of soil 3 and cast-in-place concrete flange plate 4 is glass pumice concrete.
As further preferably, the cast-in-place concrete flange plate 4 is parallel to bottom wing listrium 7.
As further preferably, the top flange plate 6 is parallel to bottom wing listrium 7.
As further preferably, the top flange plate 6 and bottom wing listrium 7 are isometric.
As further preferably, the web 8 is perpendicular to bottom wing listrium 7.
As further preferably, the web 8 is corrugated plating.
As further preferably, the quantity of the web 8 is one and the web 8 can be by prereinforced U_shaped concrete
2, cast-in-place concrete 3, cast-in-place concrete flange plate 4, top flange plate 6, bottom wing listrium 7 and closed stirrup 13 are divided into two.
As further preferably, the bolt 9 is perpendicular to bottom wing listrium 7.
As further preferably, it is U-shaped that the part that the bolt 9 is located at 7 lower section of bottom wing listrium is built in precast concrete
Slot 2, the part above bottom wing listrium 7 are built in cast-in-place concrete 3.
As further preferably, the bolt 9 runs through bottom wing listrium 7 from bottom to up.
As further preferably, it is U-shaped that arragement direction of the bolt 9 on bottom wing listrium 7 is parallel to precast concrete
The flute length direction of slot 2.
As further preferably, the peg 10 is perpendicular to top flange plate 6.
As further preferably, the peg 10 is welded in top flange plate 6 and is built in cast-in-place concrete flange plate 4.
As further preferably, it is U-shaped that arragement direction of the peg 10 on top flange plate 6 is parallel to precast concrete
The flute length direction of slot 2.
As further preferably, the angle 11 is obtuse angle.
As further preferably, the vertical muscle 12 is partially built in prereinforced U_shaped concrete with closed stirrup 13
2, partially it is built in cast-in-place concrete flange plate 4.
As further preferably, the closed stirrup 13 is round rectangle；The quantity of the vertical muscle 12 be four and
Four vertical muscle 12 are located at the interior angle of closed stirrup 13.
Embodiment 2: the construction method of partial precast shape steel-concrete combined beam of the present invention
Specific step is as follows:
(1) vertical muscle 12 is bound with closed stirrup 13, forms framework of steel reinforcement 5, framework of steel reinforcement 5 is pressed into designed distance
It is placed in the template made according to prereinforced U_shaped concrete 2；
(2) web 8 is welded between top flange plate 6 and bottom wing listrium 7, arranges spiral shell after 7 punching two ends of bottom wing listrium
Peg 10 is welded in 6 top surface of top flange plate, obtains fashioned iron 1, fashioned iron 1 is placed in by designed distance according to precast concrete by bolt 9
In the template that U-type groove 2 makes；
(3) concreting is completed into pre-erection in the template made according to prereinforced U_shaped concrete 2, obtained pre-
Product；
(4) prefabricated component is transported to construction site, prefabricated component is put into according to cast-in-place concrete 3 and the cast-in-place concrete wing
In the template that listrium 4 makes, by concreting in the mould made according to cast-in-place concrete 3 and cast-in-place concrete flange plate 4
In plate, obtain completing part.
Embodiment 3: the detection of partial precast shape steel-concrete combined beam of the present invention
Specific step is as follows:
The size for choosing top flange plate is 100 × 6, and the size of bottom wing listrium is 100 × 8, and the height of ripple drafting board is
160mm, specification are W94 × 20 × 2, and steel plate is all made of Q345, and the diameter of vertical muscle is 18mm, using HRB335 reinforcing bar, closing
The diameter of formula stirrup is 6mm, using HPB300 reinforcing bar, and bolt uses the high-strength bolt of 10.9 grades of M12 models, and the diameter of peg is
12mm, precast concrete use C40 normal concrete, and cast-in-place concrete uses glass pumice concrete.
By embodiment 1-2, novel partial precast combination beam of the invention is prepared, the span of combination beam is 2500mm, T
The total cross-section of type section combination beam is having a size of 200mm × 300mm × 800mm × 100mm.
Its limit bending bearing capacity and weight, testing result are measured according to above-mentioned anti-bending bearing capacity detection method are as follows:
Limit bending bearing capacity is 205.6kNm, weight is about 615.3kg.
Embodiment 4: the construction method and detection of cast-type shape steel-concrete combined beam
Specific step is as follows:
Select material same as Example 3；
Vertical muscle is bound with closed stirrup, framework of steel reinforcement is formed, framework of steel reinforcement is placed in T-type beam by designed distance
Template in；Web is welded between top flange plate and bottom wing listrium, bolt is arranged after the punching of lower flange board ends, by bolt
Tack welding is connected to top flange plate top surface, obtains fashioned iron, and fashioned iron is placed in the template of T-type beam by designed distance；By concreting
In the template of T-type beam, cast-type shape steel-concrete combined beam is obtained.
Embodiment 4 and the difference of embodiment 3 are: concrete parts are all cast-in-place and concrete uses C40 common entirely
Concrete.
By the embodiment above, cast-type shape steel-concrete combined beam is prepared, the span of combination beam is 2500mm.T
The total cross-section of type section combination beam is having a size of 200mm × 300mm × 800mm × 100mm.
Its limit bending bearing capacity and weight, testing result are measured according to above-mentioned anti-bending bearing capacity detection method are as follows:
Limit bending bearing capacity is 216.9kNm, weight is about 755.2kg.
From embodiment 3-4 it can be seen that the bending bearing capacity of combination beam of the present invention and commonly complete cast-in-place combination beam resist
Curved bearing capacity is not much different, weight reduction, and is experimentally observed two concrete interfaces without sliding, it was demonstrated that the present invention proposes
Two parts concrete of novel compositions beam can cooperate, can safely and effectively be applied to Practical Project, and more complete than common
Cast-in-place transfer structure for SRC beams has the advantages that more.
Although the present invention has been described by way of example and in terms of the preferred embodiments, it is not intended to limit the invention, any to be familiar with this skill
The people of art can do various change and modification, therefore protection model of the invention without departing from the spirit and scope of the present invention
Enclosing subject to the definition of the claims.
Claims (10)
1. a kind of partial precast shape steel-concrete combined beam, which is characterized in that the combination beam contains fashioned iron (1), concrete
Native U-type groove (2) is filled in the internal cast-in-place concrete (3) of prereinforced U_shaped concrete (2), is located above cast-in-place concrete (3)
Cast-in-place concrete flange plate (4), and be located at that fashioned iron (1) is external and part is built in prereinforced U_shaped concrete (2), part
It is built in the framework of steel reinforcement (5) of cast-in-place concrete flange plate (4)；
The fashioned iron (1) is several with bottom wing listrium (7) containing top flange plate (6), bottom wing listrium (7), connection top flange plate (6)
Web (8) is located at bottom wing listrium (7) close to the both ends of framework of steel reinforcement (5) and runs through the bolt (9) of bottom wing listrium (7), Yi Jiwei
In top flange plate (6) close to the peg (10) at the both ends of framework of steel reinforcement (5)；It is close to prefabricated mixed in the bottom surface of the bottom wing listrium (7)
The bottom surface of solidifying soil U-type groove (2) inner wall and the top surface of the bottom wing listrium (7) respectively with prereinforced U_shaped concrete (2) inner wall and abdomen
Two opposite side shapes of plate (8) are (11) at a certain angle；
The framework of steel reinforcement (5) is parallel to the vertical muscle in prereinforced U_shaped concrete (2) flute length direction containing four or four or more
(12) and it is several perpendicular to bottom wing listrium (7) and around the closed stirrup of vertical muscle (12) (13).
2. a kind of partial precast shape steel-concrete combined beam as described in claim 1, which is characterized in that the concrete
The material of native U-type groove (2), cast-in-place concrete (3) and cast-in-place concrete flange plate (4) can be glass pumice concrete, haydite
One of concrete or normal concrete are a variety of.
3. a kind of partial precast shape steel-concrete combined beam as claimed in claim 1 or 2, which is characterized in that the web
It (8) is corrugated plating.
4. a kind of partial precast shape steel-concrete combined beam a method according to any one of claims 1-3, which is characterized in that the abdomen
The quantity of plate (8) is one and the web (8) can be by prereinforced U_shaped concrete (2), cast-in-place concrete (3), cast-in-place concrete
Flange plate (4), top flange plate (6), bottom wing listrium (7) and closed stirrup (13) are divided into two.
5. a kind of partial precast shape steel-concrete combined beam as described in claim 1-4 is any, which is characterized in that the spiral shell
The part that bolt (9) is located at below bottom wing listrium (7) is built in prereinforced U_shaped concrete (2), is located above bottom wing listrium (7)
Part is built in cast-in-place concrete (3).
6. a kind of partial precast shape steel-concrete combined beam a method as claimed in any one of claims 1 to 5, which is characterized in that the bolt
Nail (10) is welded in top flange plate (6) and is built in cast-in-place concrete flange plate (4).
7. a kind of partial precast shape steel-concrete combined beam as described in claim 1-6 is any, which is characterized in that described vertical
Muscle (12) and closed stirrup (13) are partially built in prereinforced U_shaped concrete (2), are partially built in the cast-in-place concrete edge of a wing
Plate (4).
8. a kind of partial precast shape steel-concrete combined beam as claimed in claim 1, which is characterized in that the envelope
Enclosed stirrup (13) is round rectangle；The quantity of the vertical muscle (12) is that four and four vertical muscle (12) are located at closed hoop
At the interior angle of muscle (13).
9. a kind of construction method of any partial precast shape steel-concrete combined beam of claim 1-8, feature exist
In the method is to bind vertical muscle (12) and closed stirrup (13), is formed framework of steel reinforcement (5), by framework of steel reinforcement (5)
It is placed in the template according to prereinforced U_shaped concrete (2) production by designed distance；By web (8) be welded in top flange plate (6) with
Between bottom wing listrium (7), bolt (9) are arranged after bottom wing listrium (7) punching two ends, peg (10) is welded in top flange plate
(6) top surface obtains fashioned iron (1), and fashioned iron (1) is placed in the template made according to prereinforced U_shaped concrete (2) by designed distance
In；Concreting is completed into pre-erection in the template made according to prereinforced U_shaped concrete (2), obtains prefabricated component；It will
Prefabricated component is transported to construction site, and prefabricated component is put into according to cast-in-place concrete (3) and cast-in-place concrete flange plate (4) production
Template in, by concreting according to cast-in-place concrete (3) and cast-in-place concrete flange plate (4) production template in,
It obtains completing part.
10. construction method described in claim 1-8 any the partial precast shape steel-concrete combined beam or claim 9
Application in terms of building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389344.0A CN109537804A (en) | 2018-11-21 | 2018-11-21 | A kind of partial precast shape steel-concrete combined beam and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN113482237A (en) * | 2021-07-21 | 2021-10-08 | 重庆大学 | Reinforced concrete composite T beam adopting prefabricated U-shaped ECC permanent template |
| CN114809443A (en) * | 2022-04-29 | 2022-07-29 | 东南大学 | Bearing-fireproof integrated prefabricated prestressed concrete combined secondary beam and manufacturing method thereof |
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| CN108756061A (en) * | 2018-06-19 | 2018-11-06 | 西安建筑科技大学 | A kind of partial precast assembly prestress steel reinforced concrete hybrid beam and construction method |
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| KR20100044138A (en) * | 2008-10-21 | 2010-04-29 | 신성건설 주식회사 | Composite u-beam and th construction method |
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| CN113482237A (en) * | 2021-07-21 | 2021-10-08 | 重庆大学 | Reinforced concrete composite T beam adopting prefabricated U-shaped ECC permanent template |
| CN114809443A (en) * | 2022-04-29 | 2022-07-29 | 东南大学 | Bearing-fireproof integrated prefabricated prestressed concrete combined secondary beam and manufacturing method thereof |
| CN114809443B (en) * | 2022-04-29 | 2024-04-16 | 东南大学 | Bearing-fireproof integrated precast prestressed reinforced concrete combined secondary beam and manufacturing method thereof |
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