CN109469259A - The two-sided compound action beam of exchangeable part assembled steel-concrete - Google Patents
The two-sided compound action beam of exchangeable part assembled steel-concrete Download PDFInfo
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- CN109469259A CN109469259A CN201811063626.1A CN201811063626A CN109469259A CN 109469259 A CN109469259 A CN 109469259A CN 201811063626 A CN201811063626 A CN 201811063626A CN 109469259 A CN109469259 A CN 109469259A
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- steel
- concrete
- slab
- girder
- concrete slab
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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
Abstract
The two-sided compound action beam of exchangeable part assembled steel-concrete belongs to composite structure field.Combination beam top concrete slab is Bars In Poured Concrete Slab, and lower part concrete slab is prefabricated board, integral prefabricated with triangular steel plate interceptor.When construction, lower part concrete slab and triangular steel plate interceptor are integrally first placed in girder steel lower flange lower part, blending bolt is attached with girder steel lower flange, is filled lower gap between concrete slab and steel column with grouting material, is finally poured top concrete slab.If later period lower part concrete slab is impaired or need to improve combination beam bearing capacity, lower part concrete slab can be removed, the concrete slab more renewed.The present invention not only has the excellent performance of conventional composite beam, and steel and the respective advantage performance of concrete can be given full play to, improve stock utilization, enhance anti-crack ability, rigidity and the bearing capacity of combination beam, reliable performance, low in cost, it is convenient to construct, it can quickly be repaired after shake, especially suitable for greatly across, heavy structure.
Description
Technical field:
The invention belongs to composite structure technical fields, are related to a kind of exchangeable part assembled steel-two-sided group of concrete
Beam is used in cooperation.
Background technique:
Current architectural engineering in terms of large span, heavy load using more and more, according to traditional reinforced concrete
Tu Liang, then the depth of section of beam can be very big, influences interior net storey height, Liang Zichong is also very big, and constructional difficulties are also uneconomical.If adopting
With traditional steel-concrete composite beam, then can preferably solve the problems, such as this, but in common continuous composite beam at support due to depositing
In larger hogging moment, girder steel lower flange is caused to be pressurized serious, there are the possibility of unstability；The easy crack in tension of top concrete slab, steel
Lower flange of girder edge thickness and deck-molding are often determined by hogging moment area, cause the utilization rate of material not high, steel using amount is bigger than normal.For this
Problem, although some technologies for improving anti-cracking ability have been developed at present, often technology is complicated, with high costs, takes effect
It is little, while after destruction, it repairs very difficult.Therefore, how to improve the bearing capacity of conventional combination beam, improve stock utilization,
It is provided simultaneously with certain replaceability, convenient for quickly repairing after shake, adapts to the trend that current green building industrialization is built,
It is the challenge that must be faced in combined structure system scientific research and engineering practice.Therefore, in order to overcome the problems referred above, it is badly in need of
Large span, heavy load, replaceable novel green combined member can be suitable for by developing one kind.
Summary of the invention:
The purpose of the present invention is to provide a set of two-sided compound action beams of exchangeable part assembled steel-concrete.
Scheme proposed by the present invention is as follows:
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, which is characterized in that the combination beam packet
Include top concrete slab (1), upper reinforcement (2), girder steel (4), peg (3), the first bolt sleeve group (9), the second bolt sleeve group
(7), triangular steel plate interceptor (6), lower part precast slab (5), lower rebar (8)；Top concrete slab (1) is cast-in-place
Plate, girder steel lower flange prepared screw-bolt hole hole at compound action negative moment of girder, with bolt by lower part precast slab, triangular steel plate
Interceptor and girder steel lower flange are connected as an entirety；The weld stud at the top of girder steel top flange, and casting concrete plate；Triangle
Steel plate interceptor is welded by the equal right angle trigonometry steel plate of two pieces of rectangular steel plates and three block sizes, two pieces of rectangular steel plates width
The ratio between be 1:2, length is identical with thickness, and two pieces of rectangular steel plates long sides are overlapped and at right angles welding, three blocks of right angle trigonometry steel plates
Right-angle side is arranged along two pieces of rectangular steel plates shorts, and three blocks of right angle trigonometry steel plates are respectively welded at the four of two pieces of rectangular steel plates long sides
At Along ent；
Triangular steel plate interceptor height h is identical as lower part precast concrete plate thickness, and triangular steel plate interceptor length L is under
Portion's precast concrete board width is equal, and steel plate thickness t is identical as girder steel lower flange thickness and is not less than 16mm.
The first bolt sleeve group (9) quantity in lower part precast slab (5) presses longitudinal pitch 300mm, and horizontal spacing is
The half of girder steel lower flange width is arranged；Lower part precast slab (5) end should reserve 30mm spacing with pillar, and to
After lower part precast slab and triangular steel plate interceptor are connect with girder steel, gap is filled by C60 microdilatancy grouting material.
Second bolt sleeve group (7) quantity needed for triangular steel plate interceptor (6) is by the design carrying of lower part precast slab
Power is calculated, bolt number calculation formula:Wherein Ac: lower part precast slab end and pillar contact surface
Product；fc: concrete crushing strength design value；The single bolt shear-carrying capacity design value of second bolt sleeve group.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that under connection
The bolt of portion's precast slab and girder steel can bear precast slab self weight, while prevent concrete slab lift displacement.Water
Put down to thrust undertaken by triangular steel plate interceptor；The bolt quantity of triangular steel plate interceptor and girder steel is connected by horizontal thrust
The shear-carrying capacity of size and single bolt determines.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that top is mixed
Concrete board is cast-in-situ reinforced concrete slab.
A kind of two-sided compound action beam of steel-concrete, it is characterised in that steel used in triangular steel plate interceptor with
Girder steel is identical.
The two-sided compound action beam of a kind of steel-concrete, it is characterised in that lower part is prefabricated mixed at combination negative moment of girder
The position of concrete board is in girder steel lower flange lower part.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that combination beam
In girder steel be I-shaped or H profile steel beam.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that triangular steel
Plate interceptor should be designed by requirement of the invention, and the rigidity to guarantee its own is met the requirements, reduction deflection, after stress
Stablize, is reliable.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that lower part is pre-
Strength grade of concrete used in concrete slab processed is not less than C30.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that under girder steel
The position in the prepared screw-bolt hole hole on the edge of a wing, lower part precast slab and triangular steel plate interceptor should meet present invention provide that
Required precision.
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that lower part is pre-
Concrete slab end processed and triangular steel plate interceptor should hold out against production.The effect of triangular steel plate interceptor includes that resistance lower part is prefabricated
The horizontal thrust of concrete slab reduces the interface sliding amount between lower part precast slab and girder steel, improves the rigid of combination beam
Degree and ultimate bearing capacity；
A kind of two-sided compound action beam of exchangeable part assembled steel-concrete, it is characterised in that lower part is pre-
There is a triangular steel plate interceptor in concrete slab end processed, and carries out integral manufacturing and installation.
Detailed description of the invention:
Fig. 1 is a kind of two-sided compound action beam three-dimensional structure construction of exchangeable part assembled steel-concrete of the present invention
Schematic diagram；
Fig. 2 is side view of the present invention；
Fig. 3 is the 1-1 diagrammatic cross-section of combination beam of the present invention；
Fig. 4 is the 2-2 diagrammatic cross-section of combination beam of the present invention；
Fig. 5 is the 3-3 diagrammatic cross-section of combination beam of the present invention；
Fig. 6 is the triangular steel plate interceptor figure of combination beam of the present invention；
Fig. 7 is the triangular steel plate interceptor and lower part precast slab schematic view of the mounting position of combination beam of the present invention；
Fig. 8 is the triangular steel plate interceptor schematic three dimensional views of combination beam of the present invention；
Fig. 9 is the load-deflection curves comparison diagram in combination beam of the present invention and conventional combination girder span；
In figure, the top 1-- concrete slab, 2-- upper reinforcement, 3-- peg, 4-- girder steel, the lower part 5-- precast slab,
6-- triangular steel plate interceptor, the 7-the second bolt sleeve group, 8-- lower rebar, 9-- the first bolt sleeve group, the top 201-- concrete
Transversely distributed steelbar at the top of plate, the top 202-- concrete slab bottom transversely distributed steelbar, the top 203-- concrete slab top are vertical
To steel bar stress, the top 204-- concrete slab bottom Reinforcement, precast slab top in the lower part 801-- is laterally divided
Cloth reinforcing bar, the lower part 802-- precast slab bottom transversely distributed steelbar, at the top of the precast slab of the lower part 803-- it is longitudinal by
Power reinforcing bar, the lower part 804-- precast slab bottom Reinforcement, 701-- the second bolt sleeve group screw rod, 702-- second
Bolt sleeve group installs nut, 901-- the first bolt sleeve group screw rod, and 902-- the first bolt sleeve group installs nut.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
The present invention is a kind of two-sided compound action beam of exchangeable part assembled steel-concrete, the top concrete
Plate is cast in place concrete plate, and it is longitudinal that inside is evenly arranged top transverse steel, top longitudinal reinforcement, bottom transverse steel and bottom
Reinforcing bar；Girder steel is I-shaped or H profile steel beam；Pillar is I-shaped, H-type, box-type section steel column；Peg is common peg；Girder steel
It by hot rolling or is welded with steel column, steel used are building structural steel；The bolt is the first bolt sleeve group and second
Bolt sleeve group, including screw rod, nut and nut；Lower part concrete slab is precast slab, inside has the top being evenly arranged horizontal
To reinforcing bar, top longitudinal reinforcement, bottom transverse steel and bottom longitudinal reinforcement, and corresponding spiral shell is reserved on precast slab
Keyhole hole；
Combination beam top concrete slab is cast in place concrete plate；
The top peg quantity of girder steel top flange is designed calculating by complete shear connections；The size of peg, spacing and
Arrangement mode should meet the requirement of combination beam related specifications and standard.
Size, strength grade of concrete, installation site of lower part precast slab etc. press formula provided by the invention
Calculating is designed with method to determine；
Lower part concrete slab is prefabricated board, and the bolt hole position on prefabricated board should be with the hole location on girder steel lower flange
Correspond, meet present invention provide that required precision.
First bolt sleeve group bolt used in the precast slab of lower part is prevented for fixing lower part precast slab
Lift displacement, thus the quantity of bolt and arrangement be considered as lower part precast slab lift displacement power and gravity it is big
It is small, but because lift displacement power and gravity are smaller, therefore bolt is arranged by construction measure can meet requirement for bearing capacity.
Size, bearing capacity and the used second bolt sleeve group quantity of triangular steel plate interceptor should be by lower part concretes
The native plate horizontal thrust intermarginal with girder steel bottom wing determines.
Hole location on triangular steel plate interceptor should be corresponded with the position of the hole on girder steel, meet present invention rule
Fixed required precision.
Installation of the invention, disassembly and replacing options are as follows:
Corresponding bolt hole, and integral prefabricated lower part concrete are reserved in girder steel lower flange at combination negative moment of girder first
Plate and triangular steel plate interceptor, while reserving corresponding bolt hole；Secondly, lower part precast slab and triangular steel plate are hindered
Only device is placed in girder steel lower flange lower part, by the first bolt sleeve group and the second bolt sleeve group respectively by lower part precast concrete
Plate, triangular steel plate interceptor and girder steel lower flange are attached, and pour the gap 30mm with C60 microdilatancy grouting material；Finally, using
Traditional construction technique, top concrete slab of constructing.
Later period when lower part precast slab damages or needs to improve combination beam bearing capacity, first unloads combination beam with support
It carries, then removes girder steel lower part concrete slab, the concrete slab more renewed；Finally, remove support, restore combination beam by
Power.
Claims (10)
1. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete, which is characterized in that including top concrete
Plate (1), upper reinforcement (2), girder steel (4), peg (3), the first bolt sleeve group (9), the second bolt sleeve group (7), triangular steel plate resistance
Only device (6), lower part precast slab (5), lower rebar (8)；Top concrete slab (1) is Bars In Poured Concrete Slab, two-sided compound action
Girder steel lower flange, lower part precast slab and triangular steel plate interceptor distinguish prepared screw-bolt hole hole at negative moment of girder, use bolt
Lower part precast slab, triangular steel plate interceptor and girder steel lower flange are connected as an entirety；At the top of girder steel top flange
Weld stud and casting concrete plate；The triangular steel plate interceptor right angle trigonometry steel equal by two pieces of rectangular steel plates and three block sizes
Plate is welded, and the ratio between two pieces of rectangular steel plates width are 1:2, and length is identical with thickness, and two pieces of rectangular steel plates long sides are overlapped
And at right angles welding, the right-angle side of three blocks of right angle trigonometry steel plates is arranged along two pieces of rectangular steel plates shorts, and is respectively welded at two pieces
At the quartering point of rectangular steel plates long side；
Triangular steel plate interceptor height h is identical as lower part precast concrete plate thickness, and triangular steel plate interceptor length L and lower part are pre-
Concrete slab width processed is equal, and steel plate thickness t is identical as girder steel lower flange thickness, and is not less than 16mm.
2. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is the first bolt sleeve group (9) quantity in lower part precast slab (5) by longitudinal pitch 300mm, horizontal spacing is girder steel
The half of lower flange width is arranged；Lower part precast slab (5) end and pillar reserve the gap 30mm, and pre- to lower part
After concrete slab and triangular steel plate interceptor processed and girder steel integrated connection, gap is filled by C60 microdilatancy grouting material.
3. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
Be the second bolt sleeve group (7) quantity needed for triangular steel plate interceptor (6) by lower part precast slab design bearing capacity into
Row, which calculates, to be determined, bolt number calculation formula:Wherein Ac: lower part precast slab end is contacted with pillar
Area；fc: concrete crushing strength design value；The single bolt shear-carrying capacity design value of second bolt sleeve group.
4. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is that top concrete slab (1) is cast-in-situ reinforced concrete slab；Have in the concrete slab of top top transversely distributed steelbar (201),
Bottom transversely distributed steelbar (202), top Reinforcement (203), bottom Reinforcement (204)；Lower part is prefabricated mixed
There are top transversely distributed steelbar (801), bottom transversely distributed steelbar (802), top Reinforcement in concrete board (5)
(803), bottom Reinforcement (804).
5. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is the position for combining lower part precast slab (5) at negative moment of girder in girder steel (4) lower flange lower part.
6. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is that the girder steel (4) in combination beam is I-shaped or H profile steel beam.
7. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is that steel used in triangular steel plate interceptor (6) are identical as girder steel.
8. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is strength grade of concrete used in lower part precast slab (5) not less than C30.
9. a kind of two-sided compound action beam of exchangeable part assembled steel-concrete according to claim 1, feature
It is the position precision satisfaction ± 2mm in girder steel lower flange and triangular steel plate interceptor (6) prepared screw-bolt hole hole, lower part concrete
The position precision in the prepared screw-bolt hole hole in native plate (5) should meet ± 5mm.
10. applying a kind of exchangeable part assembled steel-two-sided combination of concrete as described in any one of claims 1-9
The method for acting on beam, it is characterised in that corresponding bolt hole is reserved in girder steel lower flange at combination negative moment of girder, and whole pre-
Lower part concrete slab and triangular steel plate interceptor processed, while reserving corresponding bolt hole；Secondly, by lower part precast slab
It is placed in girder steel lower flange lower part with triangular steel plate interceptor, by the first bolt sleeve group and the second bolt sleeve group respectively by lower part
Precast slab, triangular steel plate interceptor and girder steel lower flange are attached, between pouring 30mm with C60 microdilatancy grouting material
Gap；Finally construction top concrete slab；
Later period when lower part precast slab damages or needs to improve combination beam bearing capacity, first unloads combination beam with support
It carries, then removes girder steel lower part concrete slab, the concrete slab more renewed；Finally, remove support, restore combination beam by
Power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063626.1A CN109469259B (en) | 2018-09-12 | 2018-09-12 | Replaceable partially assembled steel-concrete double-sided combined action beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811063626.1A CN109469259B (en) | 2018-09-12 | 2018-09-12 | Replaceable partially assembled steel-concrete double-sided combined action beam |
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| CN109469259A true CN109469259A (en) | 2019-03-15 |
| CN109469259B CN109469259B (en) | 2023-09-12 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284656A (en) * | 2019-08-05 | 2019-09-27 | 郑州大学 | A kind of full assembled steel concrete combination beam |
| CN110528778A (en) * | 2019-09-18 | 2019-12-03 | 苏州科技大学 | A kind of Steel-concrete Combined Beam Structures that Novel tensile is cut and its manufacture craft |
| CN110629655A (en) * | 2019-10-09 | 2019-12-31 | 广西大学 | Local replaceable plate steel concrete composite beam adopting suspended formwork system |
| CN112376798A (en) * | 2020-11-09 | 2021-02-19 | 广州大学 | Assembled steel-UHPC beam plate structure based on bolted connection and manufacturing method thereof |
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| CN106759899A (en) * | 2017-02-17 | 2017-05-31 | 北京工业大学 | A kind of assembled honeycomb web beam column node connection device for recovering function |
| CN107386438A (en) * | 2017-06-23 | 2017-11-24 | 东南大学 | Edge of a wing friction-type shape-memory alloy rod Self-resetting steel-frame beam side column node |
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| KR101022853B1 (en) * | 2010-07-15 | 2011-03-17 | 혜동브릿지 주식회사 | Composite girder for constructing bridge |
| CN103556780A (en) * | 2013-10-29 | 2014-02-05 | 刘阳 | Flange buckling-preventing section steel and concrete composite beam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110284656A (en) * | 2019-08-05 | 2019-09-27 | 郑州大学 | A kind of full assembled steel concrete combination beam |
| CN110528778A (en) * | 2019-09-18 | 2019-12-03 | 苏州科技大学 | A kind of Steel-concrete Combined Beam Structures that Novel tensile is cut and its manufacture craft |
| CN110528778B (en) * | 2019-09-18 | 2024-03-12 | 苏州科技大学 | Novel tensile shear steel-concrete composite beam structure and manufacturing process thereof |
| CN110629655A (en) * | 2019-10-09 | 2019-12-31 | 广西大学 | Local replaceable plate steel concrete composite beam adopting suspended formwork system |
| CN112376798A (en) * | 2020-11-09 | 2021-02-19 | 广州大学 | Assembled steel-UHPC beam plate structure based on bolted connection and manufacturing method thereof |
| CN112376798B (en) * | 2020-11-09 | 2023-07-28 | 广州大学 | Assembled steel-UHPC beam plate structure based on bolt connection and manufacturing method thereof |
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| CN109469259B (en) | 2023-09-12 |
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