CN207032009U - A kind of steel reinforced concrete joint based on UHPC - Google Patents
A kind of steel reinforced concrete joint based on UHPC Download PDFInfo
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- CN207032009U CN207032009U CN201720979223.6U CN201720979223U CN207032009U CN 207032009 U CN207032009 U CN 207032009U CN 201720979223 U CN201720979223 U CN 201720979223U CN 207032009 U CN207032009 U CN 207032009U
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- uhpc
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Abstract
The utility model discloses a kind of steel reinforced concrete joint based on UHPC, belong to science of bridge building field, the toughened internal stress burst section of the steel reinforced concrete joint based on UHPC is in prefabrication, and connected with WELDING STUDS, after conserving to design strength, the toughened internal stress fragment of the steel reinforced concrete joint style based on UHPC is transported to construction site and is welded into complete toughened internal stress, solves the problems, such as the complicated and constructional difficulties of the existing steel reinforced concrete joint style based on normal concrete.In addition, being somebody's turn to do the steel reinforced concrete joint based on UHPC, due to replacing normal concrete using UHPC, using UHPC very-high performance, under conditions of the performance of structure is not reduced, concrete amount can be reduced, simplifies structure, is easy to be prefabricated in the factory.The advanced novelty of the utility model structural material, it is easy for construction, and be prefabricated in the factory, construction quality is easily guaranteed that, therefore should steel reinforced concrete joint style based on UHPC toughened internal stress speed of application is fast, quality is high.
Description
Technical field
The utility model belongs to civil engineering bridge technology field, more particularly, to a kind of steel based on UHPC-hybrid junction head
Structure.
Background technology
In recent decades, with the development of world's Longspan Bridge, in order to make full use of material specific strength different
Feature and optimization bridge structure, the bridge for occurring and being applied in combination with concrete box girder and cross bridge floor board steel box-girder
Structure type, and steel reinforced concrete joint also largely applies in steel reinforced concrete combination cable-stayed bridge therewith.But the adapter section of girder steel and beams of concrete
It is easily form the weakness of structure at architectural characteristic and material property mutation, it is necessary to which design science, rational connected mode are located
Reason.The combining form of adapter section, length, girder steel sectional dimension, cross section size, Concrete Filled amount etc. can all influence it
Rigidity.
Existing steel reinforced concrete joint style mainly has following four kinds：Firstth, total cross-section bearing plate connected mode.Secondth, it is complete to cut
Face connects fill concrete mode.The problem of there is structure construction in both modes and stress is complicated, and difficulty of construction is high.The
3rd, part connection bearing plate mode.Program simple structure, power transmission are direct, but the change of section rigidity is more violent, stress
Diffusion is uneven, and nearby concrete is easy to crack, it is necessary to pressure-bearing steel plate using super thick on composition surface.4th, part connection filling coagulation
Earthwork formula.By setting steel cell compartment structure, to ensure that main fine strain of millet stiffness transition is suitable, bearing capacity enhancing, but construct, construction phase
To more complicated.To sum up, above-mentioned four kinds of methods there are problems that using to some extent.
Utility model content
Technical problem to be solved in the utility model is to overcome above-mentioned deficiency of the prior art, there is provided one kind is based on
UHPC steel-hybrid junction header structure, its simple in construction, reasonable in design and easy construction, using effect are good, can effectively solve existing
The construction of steel-mixed joint is complicated, the low problem of efficiency.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of steel based on UHPC-hybrid junction head, the steel based on the UHPC-hybrid junction head include 1 the steel reinforced concrete based on UHPC
Adapter section (2) and 1 steel box-girder strengthening segment (1)；
Wherein, the steel box-girder strengthening segment (1) includes top plate T-shaped ribbed stiffener (1-1), bottom plate T-shaped ribbed stiffener (1-2), top
Plate U-shaped ribbed stiffener (1-3), bottom plate U-shaped ribbed stiffener (1-4)；
The toughened internal stress (2) based on UHPC include rear bearing plate (2-1), steel cell compartment (2-2), WELDING STUDS (2-3),
UHPC (2-4), preceding bearing plate (2-5)；
The toughened internal stress (2) based on UHPC is transported to construction after the completion of being prefabricated in the factory with steel box-girder strengthening segment (1)
Building site is by being welded to connect.
The toughened internal stress (2) based on UHPC is laterally to be divided into M fragments along bridge in factory with steel box-girder strengthening segment (1)
It is prefabricated.
UHPC (2-4) the internal reservation presstressed reinforcing steel duct, to ensure toughened internal stress (2) and coagulation based on UHPC
Native box beam (3) is completely embedded.
The toughened internal stress (2) based on UHPC is via section splicing seams (2-6) and passes through presstressed reinforcing steel (4) and coagulation
Native box beam (3) connection.
The utility model has advantages below compared with prior art：
(1) a kind of steel based on UHPC-hybrid junction header structure is simple used by the utility model, easy for construction；
(2) UHPC in toughened internal stress of the utility model based on UHPC have superelevation compression strength, tensile strength with
And good crack resistance, fatigue resistance and durability, relative to the toughened internal stress based on normal concrete, do not reducing structure
Under conditions of performance, concrete amount can be reduced, reduces dead load；
(3) toughened internal stress of the utility model based on UHPC and girder steel strengthening segment are prefabricated in the factory shaping, can be effective
Improve the construction quality of structure；
(4) the utility model construction method is simple, efficiency of construction is high, construction effect is good, can be according to design requirement in factory
It is determined in advance the design size of toughened internal stress and girder steel strengthening segment based on UHPC, improves efficiency of construction, convenient and quick construction,
It is and cost-effective.
(5) the utility model using effect is good and use value is high, has a good endurance quality, convenient and quick construction,
The advantages that economy uses, can effectively solve the construction complexity of existing steel-mixed joint style, the low problem of efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Description of reference numerals：
1- girder steel strengthening segments, 1-1- top plate T-shaped ribbed stiffeners, 1-2- bottom plate T-shaped ribbed stiffeners；
1-3- top plate U-shaped ribbed stiffeners, 1-4- bottom plate U-shaped ribbed stiffeners；
Toughened internal stress of the 2- based on UHPC, bearing plate after 2-1-, 2-2- steel cell compartments；
2-3- WELDING STUDSs, bearing plate before 2-4-UHPC, 2-5-；
2-6- sections splicing seams, 3- concrete box girders, 4- presstressed reinforcing steels.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing, to this
Technical scheme in utility model embodiment carries out clear, complete description.Obviously, described embodiment is the utility model
Part of the embodiment, rather than whole embodiment.
Therefore, this claimed practicality is not intended to limit newly to the detailed description of embodiment of the present utility model below
The scope of type, but it is merely representative of section Example of the present utility model.It is general based on the embodiment in the utility model, this area
The every other embodiment that logical technical staff is obtained under the premise of creative work is not made, belong to the utility model guarantor
The scope of shield.
It should be noted that in the case where not conflicting, feature in embodiment and embodiment in the utility model and
Technical scheme can be mutually combined.
Embodiment
As shown in figure 1, a kind of steel based on UHPC-hybrid junction head of the utility model includes：1 steel reinforced concrete based on UHPC combines
2 and 1 steel box-girder strengthening segments 1 of section；
The steel box-girder strengthening segment 1 includes top plate T-shaped ribbed stiffener 1-1, bottom plate T-shaped ribbed stiffener 1-2, top plate U-shaped ribbed stiffener
1-3, bottom plate U-shaped ribbed stiffener 1-4；
The toughened internal stress 2 based on UHPC include rear bearing plate 2-1, steel cell compartment 2-2, WELDING STUDS 2-3, UHPC2-4,
Preceding bearing plate 2-5；
The toughened internal stress 2 based on UHPC is transported to construction site after the completion of being prefabricated in the factory with steel box-girder strengthening segment 1
By being welded to connect.
The toughened internal stress 2 based on UHPC is pre- in factory to be laterally divided into M fragments along bridge with steel box-girder strengthening segment 1
System.
UHPC (2-4) the internal reservation presstressed reinforcing steel duct, to ensure toughened internal stress (2) and coagulation based on UHPC
Native box beam (3) is completely embedded.
The toughened internal stress (2) based on UHPC is via section splicing seams (2-6) and passes through presstressed reinforcing steel (4) and coagulation
Native box beam (3) connection.
A kind of thus obtained steel based on the UHPC-hybrid junction head of the present embodiment possesses following excellent during Practical Project
Point：(1) using factory prefabricating construction and assembled in situ construction technology, becoming greatly for current science of bridge building technology development is met
Gesture；(2) prefabricated components are used, the influence of concrete creep is eliminated；The stresses re-distribution between component is avoided, advantageously
Improve the force-bearing situation of structure；(3) ultra-high performance concrete (UHPC) is used, meets green construction demand, simultaneously
Also the dosage of conventional concrete is greatly reduced, is favourable to environment；(4) ultra-high performance concrete have superelevation mechanical property and
Superelevation durability, its compression strength is 4 times of conventional concrete, tensile strength is 10 times of conventional concrete or so, anti-chlorine from
Son erosion is 100 times of conventional concrete, therefore, in terms of resistance to compression, tension, cracking resistance and durability performance, very-high performance coagulation
Soil has the incomparable advantage of conventional concrete.And steel-mixed adapter section stress is extremely complex, belong to typical space-load shape
State, using ultra-high performance concrete as steel-mixed built-up joint, it is entirely avoided the risk of concrete parts cracking, have very
Good structural advantage.
Section Example of the present utility model is the foregoing is only, is not limited to the utility model, for this
For art personnel, the utility model can have various modifications and variations.It is all the spirit and principles of the utility model it
It is interior, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (4)
1. a kind of steel based on UHPC-hybrid junction head, it is characterised in that the steel based on the UHPC-hybrid junction head is based on including 1
UHPC toughened internal stress (2) and 1 steel box-girder strengthening segment (1)；
The steel box-girder strengthening segment (1) includes top plate T-shaped ribbed stiffener (1-1), bottom plate T-shaped ribbed stiffener (1-2), top plate U-shaped and put more energy into
Rib (1-3), bottom plate U-shaped ribbed stiffener (1-4)；
The toughened internal stress (2) based on UHPC includes rear bearing plate (2-1), steel cell compartment (2-2), WELDING STUDS (2-3), UHPC
(2-4), preceding bearing plate (2-5)；
The toughened internal stress (2) based on UHPC is transported to construction site after the completion of being prefabricated in the factory with steel box-girder strengthening segment (1)
By being welded to connect.
2. the steel based on UHPC-hybrid junction head according to claim 1, it is characterised in that the steel reinforced concrete knot based on UHPC
It is laterally to be divided into M fragments along bridge in prefabrication that section (2), which is closed, with steel box-girder strengthening segment (1).
3. the steel based on UHPC-hybrid junction head according to claim 1, it is characterised in that UHPC (2-4) internal reservation
Presstressed reinforcing steel duct, by prestressed stretch-draw to ensure that the toughened internal stress (2) based on UHPC is connected tightly with concrete box girder (3)
It is close.
4. the steel based on UHPC-hybrid junction head according to claim 1, it is characterised in that the steel reinforced concrete knot based on UHPC
Section (2) is closed to be connected with concrete box girder (3) via section splicing seams (2-6) and by presstressed reinforcing steel (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720979223.6U CN207032009U (en) | 2017-08-03 | 2017-08-03 | A kind of steel reinforced concrete joint based on UHPC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720979223.6U CN207032009U (en) | 2017-08-03 | 2017-08-03 | A kind of steel reinforced concrete joint based on UHPC |
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| Publication Number | Publication Date |
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| CN207032009U true CN207032009U (en) | 2018-02-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235266A (en) * | 2018-09-26 | 2019-01-18 | 湖南大学 | A kind of construction method of toughened internal stress |
| CN110016862A (en) * | 2019-04-08 | 2019-07-16 | 中国铁建大桥工程局集团有限公司 | A kind of large span stayed-cable bridge steel-is mixed to combine section constructing method |
-
2017
- 2017-08-03 CN CN201720979223.6U patent/CN207032009U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109235266A (en) * | 2018-09-26 | 2019-01-18 | 湖南大学 | A kind of construction method of toughened internal stress |
| CN110016862A (en) * | 2019-04-08 | 2019-07-16 | 中国铁建大桥工程局集团有限公司 | A kind of large span stayed-cable bridge steel-is mixed to combine section constructing method |
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