CN110158447A - A kind of combination beam and preparation method thereof - Google Patents
A kind of combination beam and preparation method thereof Download PDFInfo
- Publication number
- CN110158447A CN110158447A CN201910435145.7A CN201910435145A CN110158447A CN 110158447 A CN110158447 A CN 110158447A CN 201910435145 A CN201910435145 A CN 201910435145A CN 110158447 A CN110158447 A CN 110158447A
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- Prior art keywords
- transverse steel
- combination beam
- interconnecting piece
- concrete slab
- web
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- 238000002360 preparation method Methods 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 81
- 239000010959 steel Substances 0.000 claims abstract description 81
- 239000004567 concrete Substances 0.000 claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims description 17
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 8
- 238000003466 welding Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000011374 ultra-high-performance concrete Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 239000011150 reinforced concrete Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The present invention relates to bridge construction fields, disclose a kind of combination beam comprising concrete slab is inside equipped at intervals with transverse steel.It further include inverted T shaped girder steel comprising: web, one side are equipped with interconnecting piece, and in the concrete slab, the web is connect with the transverse steel by interconnecting piece the connecting portion；It further include wing plate, it is vertical with the web to connect.Also disclose the production method of the combination beam.The combination beam is connect with the transverse steel in concrete slab using interconnecting piece compared to the connection for being realized steel plate and concrete slab using WELDING STUDS, has many advantages, such as that shear stiffness height, large carrying capacity, ductility are good；Furthermore the combination beam simple structure, construction are convenient, and cracking strength is high, durability is good.The connection that steel plate and concrete slab are realized using WELDING STUDS is efficiently solved, the problems such as drawbacks such as connector shear-carrying capacity is low, shear stiffness is small, ductility is poor and concrete slab are easy crack in tension, and durability is poor.
Description
Technical field
The present invention relates to bridge construction fields, and in particular to a kind of combination beam and preparation method thereof.
Background technique
Combination beam is the girder structure being composed of two kinds of different materials, and girder steel and concrete slab pass through shear connector
It is linked to be whole and common stress, the good advantage of steel tension, concrete slab compressive property can be given full play to, there is bearing capacity
The advantages that high, rigidity is greatly, antidetonation and power performance are good, sectional dimension of members is small, easy for construction.
Traditional steel reinforced concrete combination beam is made of girder steel and armoured concrete slab, by welding WELDING STUDS in girder steel top flange
Realize the connection with armoured concrete slab.Steel reinforced concrete combination beam can give full play to girder steel tensile strength height, concrete slab compression strength
High feature, economy with higher, is widely used.
However, when hogging moment acts on, concrete slab is in lower tensile stress water since normal strength concrete slab tensile strength is low
It is flat to crack, it will lead to rainwater infiltration after cracking, corrode internal reinforcing bar and girder steel, seriously affect the durability of structure, and conserve
Inconvenient maintenance；Traditional steel reinforced concrete combination beam is the cracking resistance for improving hogging moment area concrete slab, often uses many kinds of measures, such as
Pouring concrete plate after the jacking of hogging moment area, tensioning longitudinal prestressing in the concrete slab of hogging moment area, using the company of resistance to plucking not shearing resistance
Fitting etc. is constructed or is constructed and its is complicated, expend a large amount of manpower and material resources though can effectively improve its cracking resistance.In addition, passing
The welding workload of system steel reinforced concrete combination beam WELDING STUDS is big, and initial imperfection caused by welding or residual stress can seriously undermine shearing
The shear-carrying capacity of nail.Also there are the drawbacks such as shear stiffness is low, ductility is poor using the connection type of WELDING STUDS.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of combination beam and preparation method thereof,
It can efficiently solve when realizing the connection of steel plate and concrete slab using WELDING STUDS, connector shear-carrying capacity is low, shear stiffness
The problems such as small, drawbacks such as ductility is poor and concrete slab are easy crack in tension, and durability is poor.
To achieve the above objectives, the technical solution adopted by the present invention is that:
On the one hand, a kind of combination beam, which is characterized in that it includes,
Concrete slab is inside equipped at intervals with transverse steel；
Inverted T shaped girder steel comprising:
Web, one side are equipped with interconnecting piece, and the connecting portion is in the concrete slab, the web and the cross
It is connected to reinforcing bar by interconnecting piece；
Wing plate, it is vertical with the web to connect.
Based on the above technical solution, the interconnecting piece is spaced card slot, and the transverse steel is set to institute
It states in card slot.
Based on the above technical solution, the section of the card slot is in isosceles trapezoid and chamfering.
Based on the above technical solution, the section phase similar shape of the card slot is equipped between two adjacent card slots
The protruding portion of shape.
Based on the above technical solution, the transverse steel is in rectangle closed loop, and the lower end card of the transverse steel is set
In in the card slot.
Based on the above technical solution, the middle part of the transverse steel is equipped with reinforcing rib.
Based on the above technical solution, the interconnecting piece is spaced through-hole, and the transverse steel passes through institute
State through-hole.
Based on the above technical solution, the longitudinal reinforcement of preset quantity, the cross are provided in the transverse steel
It binds to form framework of steel reinforcement to reinforcing bar and the longitudinal reinforcement.
On the other hand, the present invention also provides a kind of production methods of combination beam comprising following steps:
S1, the processing web and its interconnecting piece；
S2, the wing plate is welded on the web；
S3, the template for setting up concrete slab, are laid with the transverse steel, and transverse steel is fastened on connection in template
In portion；
S4, casting concrete forms concrete slab in template.
Compared with the prior art, the advantages of the present invention are as follows: interconnecting piece is set on web, using interconnecting piece and concrete
Transverse steel connection in plate, transverse steel and interconnecting piece synergistic effect Transfer of Shear, have shear stiffness height, bearing capacity
Greatly, the advantages that ductility is good；Furthermore the combination beam simple structure, construction are convenient, and cracking strength is high, durability is good.It in addition can be with
The wing plate close to concrete slab side is saved, the time of weld job is reduced, also saves material, to reduce making for combination beam
Valence.
Detailed description of the invention
Fig. 1 is a kind of left view schematic diagram of combination beam in the embodiment of the present invention；
Fig. 2 is a kind of left view perspective diagram of combination beam in the embodiment of the present invention；
Fig. 3 faces perspective diagram for combination beam a kind of in the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of web in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another web in the embodiment of the present invention.
In figure: 1, concrete slab；11, transverse steel；111, reinforcing rib；12, longitudinal reinforcement；2, inverted T shaped girder steel；21, abdomen
Plate；211, interconnecting piece；212, protruding portion；22, wing plate.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Fig. 1 is a kind of left view schematic diagram of combination beam in the embodiment of the present invention；Fig. 2 is a kind of combination in the embodiment of the present invention
The left view perspective diagram of beam；Fig. 3 faces perspective diagram for combination beam a kind of in the embodiment of the present invention, referring to Fig. 1 to Fig. 3
Shown, the embodiment of the present invention provides a kind of combination beam comprising,
Concrete slab 1 is inside equipped at intervals with transverse steel 11；
Inverted T shaped girder steel 2 comprising:
Web 21, one side are equipped with interconnecting piece 211, and interconnecting piece 211 is located in concrete slab 1, web 21 and transverse steel
11 are connected by interconnecting piece 211；
Wing plate 22, it is vertical with web 21 to connect.
Interconnecting piece 211 is set on web 21, is connect using interconnecting piece with the transverse steel in concrete slab, transverse steel
With interconnecting piece synergistic effect Transfer of Shear, combination beam is made to have many advantages, such as that shear stiffness height, large carrying capacity, ductility are good；Furthermore
The combination beam simple structure, construction are convenient, and cracking strength is high, durability is good.In addition it can save close to 1 side of concrete slab
Wing plate, reduce the time of weld job, also save material, to reduce the cost of combination beam.
In the present embodiment, concrete slab 1 is rectangular plate, by UHPC (Ultra-high Performance
Concrete, ultra-high performance concrete) the cast-in-place formation ultra-high performance concrete plate of material, material axial tensile strength is not less than
8MPa, axial compressive strength are not less than 120MPa, and UHPC plate encases the interconnecting piece 211 of web 21 completely, and with interconnecting piece 211
There are certain distances for lower edges.Such design can be such that ultra-high performance concrete plate and inverted T shaped girder steel interface has preferably
Resist shearing performance, when combination beam have many advantages, such as that shear stiffness height, large carrying capacity, ductility are good；Furthermore the combination beam structure
Make that simple, construction is convenient, and cracking strength is high, durability is good.
In the present embodiment, it is welded between web 21 and wing plate 22, wing plate 22 is that center face two sides are symmetrical with web 21.It is horizontal
It is disposed in an evenly spaced relation in concrete slab 1 to reinforcing bar 11, and the length direction of transverse steel 11 place plane and concrete slab 1
Vertically, the cracking resistance intensity of ultra-high performance concrete plate can be improved in this way.
Fig. 4 is a kind of structural schematic diagram of web in the embodiment of the present invention, as shown in Figure 4, it is preferable that interconnecting piece 211 is
Spaced card slot, transverse steel 11 are set in card slot.Such design, which can form transverse steel and cooperate with interconnecting piece, to be resisted
The effect of cutting, to improve the shear-carrying capacity of combination beam, shear stiffness and ductility.
Preferably, the section of card slot is in isosceles trapezoid and chamfering.In the present embodiment, the section of card slot is in isosceles trapezoid,
It can be convenient the connection of transverse steel Yu interconnecting piece 211, the card slot chamfering of isosceles trapezoid shape avoids generating between transverse direction and card slot
Concentrated stress destroys the structure of interconnecting piece 211.
Preferably, the protruding portion 212 of the section same shape between two adjacent card slots equipped with card slot.Such design
Two blocks of webs 21 can be once cut out with one piece of rectangular slab, material can be saved, when can also save when making web 21
Between.
Preferably, transverse steel 11 is in rectangle closed loop, and the lower end of transverse steel 11 is arranged in card slot.Such design can
So that concrete slab 1 has higher intensity, better tensile stress or compression can be born.
Preferably, the middle part of transverse steel 11 is equipped with reinforcing rib 111.Reinforcing rib is additionally provided at the middle part of transverse steel 11
111 can make concrete slab 1 have higher intensity, can bear better tensile stress or compression.
Fig. 5 is the structural schematic diagram of another web in the embodiment of the present invention, as shown in Figure 5, it is preferable that in other implementations
In example, interconnecting piece 211 is spaced through-hole, and transverse steel 11 passes through through-hole.It is arranged and designs the interconnecting piece 211 of web 21
At through-hole, transverse steel 11 is made to pass through through-hole, shearing resistance effect is cooperateed with so as to form interconnecting piece and transverse steel, to mention
Shear-carrying capacity, shear stiffness and the ductility of high combination beam.
Preferably, the longitudinal reinforcement 12 of preset quantity, transverse steel 11 and longitudinal reinforcement 12 are provided in transverse steel 11
Binding forms framework of steel reinforcement.
In the present embodiment, 8 longitudinal reinforcements, 12,8 longitudinal reinforcements 12 are equipped in transverse steel 11 in transverse steel 11
Interior interval setting, transverse steel 11 and the binding of longitudinal reinforcement 12 form framework of steel reinforcement, and concrete slab 1 can in this way had preferably
Intensity.
Referring again to shown in Fig. 1 to 3, on the other hand, the embodiment of the present invention also provides a kind of production method of combination beam,
The following steps are included:
S1, processing web 21 and its interconnecting piece 211；
In one embodiment, the interconnecting piece 211 of web 21 is the spaced card slot in isosceles trapezoid shape, and is carried out
Chamfering.And the protruding portion 212 of the section same shape between two adjacent card slots equipped with card slot, in processing, once
Two blocks of webs 21 can be obtained in processing.
In another embodiment, the interconnecting piece 211 of web 21 is spaced circular hole.
S2, wing plate 22 is welded on web 21；
In the present embodiment, when wing plate 22 and web 21 being welded, wing plate 22 is that plane of symmetry two sides are symmetrical with web 21.
S3, the template for setting up concrete slab, are laid with transverse steel 11, and transverse steel 11 is fastened on connection in template
In portion 211；
In one embodiment, when being laid with transverse steel 11, transverse steel 11 is fastened on the interconnecting piece 211 of card slot form.
In another embodiment, when being laid with transverse steel 11, transverse steel 11 passes through spaced through-hole form
Interconnecting piece 211.
In addition, when being laid with transverse steel 11, while in the longitudinal reinforcement of the inside of transverse steel 11 setting preset quantity
12, and transverse steel 11 and the binding of longitudinal reinforcement 12 form framework of steel reinforcement, to improve the intensity of concrete slab 1.
S4, casting concrete forms concrete slab 1 in template.
In the present embodiment, after the completion of concrete slab 1 pours, concrete slab 1 is conserved, reaches concrete slab 1
To intensity requirement.
In conclusion the present invention provides a kind of combination beam and preparation method thereof, interconnecting piece 211 is set on web 21, is used
Interconnecting piece 211 is connect with transverse steel 11, by the synergistic effect Transfer of Shear of interconnecting piece and transverse steel, has combination beam
The advantages that shear stiffness height, large carrying capacity, good ductility；Furthermore the combination beam simple structure, construction are convenient, and cracking strength
Height, durability are good.In addition the wing plate close to 1 side of concrete slab can be saved, the time of weld job is reduced, also saves material
Material, to reduce the cost of combination beam.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of combination beam, which is characterized in that it includes,
Concrete slab (1) is inside equipped at intervals with transverse steel (11)；
Inverted T shaped girder steel (2) comprising:
Web (21), one side are equipped with interconnecting piece (211), and the interconnecting piece (211) is located in the concrete slab (1), described
Web (21) is connect with the transverse steel (11) by interconnecting piece (211)；
Wing plate (22), it is vertical with the web (21) to connect.
2. a kind of combination beam as described in claim 1, it is characterised in that: the interconnecting piece (211) is spaced card slot,
The transverse steel (11) is set in the card slot.
3. combination beam as claimed in claim 2, it is characterised in that: the section of the card slot is in isosceles trapezoid and chamfering.
4. combination beam as claimed in claim 3, it is characterised in that: equipped with the card slot between two adjacent card slots
The protruding portion (212) of section same shape.
5. a kind of combination beam as claimed in claim 2, it is characterised in that: the transverse steel (11) is in rectangle closed loop, described
The lower end of transverse steel (11) is arranged in the card slot.
6. combination beam as claimed in claim 5, it is characterised in that: the middle part of the transverse steel (11) is equipped with reinforcing rib
(111)。
7. a kind of combination beam as described in claim 1, it is characterised in that: the interconnecting piece (211) is spaced through-hole,
The transverse steel (11) passes through the through-hole.
8. a kind of combination beam as described in claim 1, it is characterised in that: be provided with preset quantity in the transverse steel (11)
Longitudinal reinforcement (12), the transverse steel (11) and the longitudinal reinforcement (12) binding form framework of steel reinforcement.
9. a kind of a kind of production method of combination beam as described in claim 1, which is characterized in that itself the following steps are included:
S1, the processing web (21) and its interconnecting piece (211)；
S2, the wing plate (22) is welded on the web (21)；
S3, the template for setting up concrete slab, are laid with the transverse steel (11), and transverse steel (11) is fastened in template
On interconnecting piece (211)；
S4, casting concrete forms concrete slab (1) in template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435145.7A CN110158447A (en) | 2019-05-23 | 2019-05-23 | A kind of combination beam and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435145.7A CN110158447A (en) | 2019-05-23 | 2019-05-23 | A kind of combination beam and preparation method thereof |
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| CN110158447A true CN110158447A (en) | 2019-08-23 |
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| CN201910435145.7A Pending CN110158447A (en) | 2019-05-23 | 2019-05-23 | A kind of combination beam and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030717A (en) * | 2020-08-03 | 2020-12-04 | 湖南省交通规划勘察设计院有限公司 | Steel-concrete composite pin combination beam |
| CN112482187A (en) * | 2020-11-03 | 2021-03-12 | 中铁大桥勘测设计院集团有限公司 | Butt-joint prefabricated combination beam and construction method |
| CN112982161A (en) * | 2021-02-09 | 2021-06-18 | 中铁大桥局集团有限公司 | Steel-concrete combined bridge deck structure and bridge |
| CN114808694A (en) * | 2022-06-29 | 2022-07-29 | 湖南省交通规划勘察设计院有限公司 | Combined beam bridge and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112030717A (en) * | 2020-08-03 | 2020-12-04 | 湖南省交通规划勘察设计院有限公司 | Steel-concrete composite pin combination beam |
| CN112482187A (en) * | 2020-11-03 | 2021-03-12 | 中铁大桥勘测设计院集团有限公司 | Butt-joint prefabricated combination beam and construction method |
| CN112982161A (en) * | 2021-02-09 | 2021-06-18 | 中铁大桥局集团有限公司 | Steel-concrete combined bridge deck structure and bridge |
| CN114808694A (en) * | 2022-06-29 | 2022-07-29 | 湖南省交通规划勘察设计院有限公司 | Combined beam bridge and construction method |
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