CN110172899A - A kind of box beam - Google Patents
A kind of box beam Download PDFInfo
- Publication number
- CN110172899A CN110172899A CN201910584884.2A CN201910584884A CN110172899A CN 110172899 A CN110172899 A CN 110172899A CN 201910584884 A CN201910584884 A CN 201910584884A CN 110172899 A CN110172899 A CN 110172899A
- Authority
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- China
- Prior art keywords
- load
- fixing sleeve
- fixed column
- bearing bases
- steel beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 210000003205 muscle Anatomy 0.000 claims description 2
- 230000000452 restraining effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention relates to box girder pre-stressed control technology fields, disclose a kind of box beam, including load-bearing bases and prestressing force Zeng Kong mechanism；Load-bearing bases are internally provided with the chamber for accommodating prestressing force Zeng Kong mechanism, and one end of load-bearing bases is provided with fixing seat in chamber, and the other end is provided with fixed column in chamber；Prestressing force Zeng Kong mechanism includes extended steel beam and the fixing sleeve that is sheathed on outside extended steel beam, one end of extended steel beam is fixedly connected with fixing sleeve, the one end of fixing sleeve far from extended steel beam and fixing seat are rotatablely connected, and extended steel beam is fixedly connected on fixed column far from one end of fixing sleeve.Box beam is in load-bearing, it will receive downward pressure, one end of extended steel beam is fixed with fixing sleeve, the other end is fixed with fixed column, the both ends of load-bearing bases are fixed to be equivalent to realize, prestressing force is provided so as to the both ends to box beam, anti-deformation and impact resistance is greatly improved, effectively prevents box beam from crack or fracture occurring during load-bearing.
Description
Technical field
The present invention relates to box girder pre-stressed control technology field more particularly to a kind of box beams.
Background technique
Box beam is one kind of science of bridge building central sill, and inside is hollow shape, and there are the edge of a wing in top two sides, similar chest, box beam point
It is common to be divided with material for prefabricated case beam and cast-in-situ box girder, there are mainly two types of, first is that prestressed reinforced concrete box beam, first is that steel case
Beam, wherein prestressed reinforced concrete box beam is site operation, and other than having longitudinal prestressing, some also set up transverse prestress, in advance
Stress building is a kind of architecture structure form generated to save steel and reduction dead load.
Existing prestress control structure still has some shortcomings when in use: existing prestress control structure
In actual use, the both ends of box beam do not have it is any structure or device can be fixed, so that prestressing force can not be provided, resist
Deformability and anti-press capacity are weaker, and box beam is easy to happen crack or fracture during load-bearing, to cause bridge
Damage, increase the maintenance cost in later period, while causing to stagnate to machine process, there are biggish limitations.
Therefore, a kind of box beam is needed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide a kind of box beam, can prevent from that crack or fracture occur during load-bearing.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of box beam, including load-bearing bases and prestressing force Zeng Kong mechanism are provided；
The load-bearing bases are internally provided with the chamber for accommodating prestressing force Zeng Kong mechanism, one end of the load-bearing bases
Fixing seat is provided in the chamber, the other end is provided with fixed column in the chamber；
Prestressing force Zeng Kong mechanism includes extended steel beam and the fixing sleeve that is sheathed on outside the extended steel beam, the stretching
One end of steel beam is fixedly connected with the fixing sleeve, and the one end of the fixing sleeve far from the extended steel beam and the fixing seat turn
Dynamic connection, the extended steel beam are fixedly connected on the fixed column far from one end of the fixing sleeve.
Preferably, holding tank is provided in the fixing seat, is provided with rotation axis in the holding tank, the fixing sleeve with
One end of the fixing seat rotation connection is provided with rotation hole, and the rotation axis is arranged in the rotation hole, so that the fixation
Set can be rotated relative to the fixing seat.
Preferably, the first reinforcing bar is embedded in the fixing seat, first reinforcing bar is fixedly connected on the load-bearing bases
Interior pre-buried reinforcing bar, the rotation axis are fixedly connected on first reinforcing bar；Or the material of the fixing seat is metal, it is described solid
Reservation is fixedly connected on reinforcing bar pre-buried in the load-bearing bases.
Preferably, one end that the fixing sleeve is mutually fixed with the extended steel beam is provided with the first fixing groove, the stretching
Steel beam is provided with the first hook portion close to one end of the fixing sleeve, and first hook portion is hooked in first fixing groove.
Preferably, it is provided with through slot in the fixed column, the extended steel beam is arranged in the through slot, in the fixed column
Restraining position ring block is set, and the stop collar is located at side of the fixed column far from the fixing sleeve, and the extended steel beam is far from institute
The one end for stating fixing sleeve is provided with the second hook portion, and second hook portion is hooked on the stop collar.
Preferably, the second reinforcing bar is embedded in the fixed column, second reinforcing bar is fixedly connected on the load-bearing bases
Interior pre-buried reinforcing bar；Or the material of the fixed column is metal, the fixed column is connected to steel pre-buried in the load-bearing bases
Muscle.
Preferably, the one end of the fixing sleeve far from the fixing seat is covered in the fixed column close to the fixed column
Equipped with elastic component, the both ends of the elastic component be connected to respectively the chamber bottom surface and the fixing sleeve.
It preferably, further include support column, the lower surface of the load-bearing bases is provided with multiple limiting slots, in the limiting slot
It is plugged with the support column, is fixedly connected between the support column and the load-bearing bases by connector.
Preferably, the top of the support column is provided with the first connecting hole, is provided on the load-bearing bases and described
The second connecting hole that one connecting hole matches is provided with second connection on two opposite side walls of the limiting slot
Hole, the connector are arranged in second connecting hole and first connecting hole.
Preferably, the bottom of the support column is provided with pedestal, and the pedestal is fixed on ground.
Beneficial effects of the present invention: box beam will receive downward pressure, one end of extended steel beam and fixing sleeve in load-bearing
Fixed, the other end is fixed with fixed column, is fixed to be equivalent to and realize to the both ends of load-bearing bases, so as to box beam
Both ends provide prestressing force, greatly improve anti-deformation and impact resistance, effectively prevent box beam from sending out during load-bearing
Raw crack or fracture.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of box beam provided by the invention；
Fig. 2 is the diagrammatic cross-section of box beam provided by the invention；
Fig. 3 is the enlarged diagram of a-quadrant in 2；
Fig. 4 is the enlarged diagram of B area in Fig. 2；
Fig. 5 is the connection schematic diagram of load-bearing bases provided by the invention and support column；
Fig. 6 is the structural schematic diagram of load-bearing bases provided by the invention.
In figure: 1, load-bearing bases；2, support column；3, pedestal；41, fixing seat；42, fixing sleeve；43, rotation axis；44, fixed
Column；45, elastic component；46, stop collar；5, the second connecting hole；6, connector；7, the first connecting hole；8, limiting slot.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or the invention produce
Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitation of the present invention.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, and should not be understood as referring to
Show or imply relative importance.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two with
On.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in Figs 1-4, present embodiment discloses a kind of box beams comprising load-bearing bases 1 and prestressing force Zeng Kong mechanism；
Load-bearing bases 1 are internally provided with the chamber for accommodating prestressing force Zeng Kong mechanism, and one end of load-bearing bases 1 is set in chamber
It is equipped with fixing seat 41, referring to Fig. 3, the other end is provided with fixed column 44 in chamber, referring to Fig. 4.Prestressing force Zeng Kong mechanism includes
Extended steel beam and the fixing sleeve 42 being sheathed on outside extended steel beam, one end of extended steel beam are fixedly connected with fixing sleeve 42, fixing sleeve
42 one end far from extended steel beam and fixing seat 41 are rotatablely connected, and extended steel beam is fixedly connected on far from one end of fixing sleeve 42
Fixed column 44.
Box beam will receive downward pressure in load-bearing, and one end of extended steel beam and fixing sleeve 42 are fixed, the other end and solid
Fixed column 44 is fixed, fixes to be equivalent to and realize to the both ends of load-bearing bases 1, provides so as to the both ends to box beam and answers in advance
Power, greatly improves anti-deformation and impact resistance, effectively prevents box beam from crack or disconnected occurring during load-bearing
It splits.
Specifically, as shown in figure 3, being provided with holding tank in fixing seat 41, rotation axis 43, fixing sleeve are provided in holding tank
42 one end being rotatablely connected with fixing seat 41 are provided with rotation hole, and rotation axis 43 is arranged in rotation hole, so that fixing sleeve 42 can
It is rotated relative to fixing seat 41.
The first reinforcing bar is embedded in fixing seat 41, the first reinforcing bar is fixedly connected on reinforcing bar pre-buried in load-bearing bases 1, rotation
Axis 43 is fixedly connected on the first reinforcing bar；Or the material of fixing seat 41 is metal, fixing seat 41 is fixedly connected in load-bearing bases 1 in advance
The reinforcing bar buried.Preferably, the material of the fixing seat 41 in the present embodiment is steel, the both ends of fixing seat 41 are respectively welded in load-bearing
The pre-buried reinforcing bar in the two sides up and down of the chamber of pedestal 1.
One end that fixing sleeve 42 is mutually fixed with extended steel beam is provided with the first fixing groove, and extended steel beam is close to fixing sleeve 42
One end is provided with the first hook portion, and the first hook portion is hooked in the first fixing groove, to realize that one end of extended steel beam is fixedly connected on
Surely 42 are covered.When extended steel Shu Shoula stretch, drawing force can be transferred to fixing seat 41.
As shown in figure 4, being provided with through slot in fixed column 44, extended steel beam is arranged in through slot, is arranged in fixed column 44 limited
Position ring 46, stop collar 46 are located at side of the fixed column 44 far from fixing sleeve 42, and extended steel beam is arranged far from one end of fixing sleeve 42
There is the second hook portion, the second hook portion is hooked on stop collar 46.The second fixing groove is provided on stop collar 46, the second hook portion is hooked in
In second fixing groove.Extended steel beam initially has a prestressing force, and prestressing force is applied by jack.
The second reinforcing bar is embedded in fixed column 44, the second reinforcing bar is fixedly connected on reinforcing bar pre-buried in load-bearing bases 1；Or it is solid
The material of fixed column 44 is metal, and fixed column 44 is connected to reinforcing bar pre-buried in load-bearing bases 1.Preferably, in the present embodiment
The material of fixed column 44 is iron, and the reinforcing bar that two sides are pre-buried above and below the chamber of load-bearing bases 1 is respectively welded in the both ends of fixed column 44.
The one end of fixing sleeve 42 far from fixing seat 41 fits in fixed column 44 close to fixed column 44, the end of fixing sleeve 42
Outer surface.Elastic component 45 is arranged in fixed column 44, the both ends of elastic component 45 are connected to bottom surface and the fixing sleeve of chamber respectively
42.Preferably, the elastic component 45 in the present embodiment is spring, the diameter of spring is 1.1 times of the outer diameter of fixed column 44, can
Guarantee that spring pocket is set in fixed column 44, and biggish shaking will not occur relative to fixed column 44.
Optionally, as it can be seen in figures 5 and 6, the box beam further includes support column 2, the lower surface of load-bearing bases 1 is provided with multiple limits
Position slot 8, the quantity of limiting slot 8 is two in the present embodiment, is located at the both ends of load-bearing bases 1.Branch is plugged in limiting slot 8
Dagger 2, the top of support column 2 insert in limiting slot 8, are fixedly connected between support column 2 and load-bearing bases 1 by connector 6.Tool
Body, the top of support column 2 is provided with the first connecting hole 7, and matched with the first connecting hole 7 is provided on load-bearing bases 1
Two connecting holes 5 are provided with the second connecting hole 5 on two opposite side walls of limiting slot 8, and connector 6 is arranged in the second connection
In hole 5 and the first connecting hole 7.Preferably, connector 6 is reinforcing bar.The quantity of first connecting hole 7 and the second connecting hole 5 is
It is multiple, preferably, the quantity of the first connecting hole 7 and the second connecting hole 5 is four in the present embodiment.It is inserted in support column 2
After limiting slot 8, reinforcing bar runs through second connecting hole 5, the first connecting hole 7 and another second connecting hole 5, by support column 2
It is fixed on load-bearing bases 1.Forward support post 2 connected with load-bearing bases 1 using plane, be now changed to clamp-close type connection, make
It obtains in later period connection, it is easier to it is fixed, accelerate the progress of installation, fit connection 6 can be by support column 2 and load-bearing bases 1
Through connection and support, the intensity and stability of connection are improved.
With continued reference to Fig. 1 and Fig. 2, the bottom of support column 2 is provided with pedestal 3, and pedestal 3 is fixed on ground.Pedestal 3 and branch
Dagger 2 is used to support load-bearing bases 1, and pedestal 3 is greater than the sectional area of support column 2 with the contact area on ground, and pedestal 3 is capable of increasing
The forced area of support column 2 reduces sinking speed and settling amount.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
1. a kind of box beam, which is characterized in that including load-bearing bases (1) and prestressing force Zeng Kong mechanism；
The load-bearing bases (1) be internally provided with accommodate prestressing force Zeng Kong mechanism chamber, the one of the load-bearing bases (1)
End is provided with fixing seat (41) in the chamber, and the other end is provided with fixed column (44) in the chamber；
Prestressing force Zeng Kong mechanism includes extended steel beam and the fixing sleeve (42) being sheathed on outside the extended steel beam, the stretching
One end of steel beam is fixedly connected with the fixing sleeve (42), the fixing sleeve (42) far from the extended steel beam one end with it is described
Fixing seat (41) rotation connection, the extended steel beam are fixedly connected on the fixed column far from one end of the fixing sleeve (42)
(44)。
2. box beam according to claim 1, which is characterized in that be provided with holding tank, the appearance on the fixing seat (41)
It receives and is provided with rotation axis (43) in slot, one end of the fixing sleeve (42) and the fixing seat (41) rotation connection is provided with rotation
Hole, the rotation axis (43) are arranged in the rotation hole, so that the fixing sleeve (42) can be relative to the fixing seat (41)
Rotation.
3. box beam according to claim 2, which is characterized in that it is embedded with the first reinforcing bar in the fixing seat (41), it is described
First reinforcing bar is fixedly connected on reinforcing bar pre-buried in the load-bearing bases (1), and the rotation axis (43) is fixedly connected on described
One reinforcing bar；Or
The material of the fixing seat (41) is metal, and the fixing seat (41) is fixedly connected on pre-buried in the load-bearing bases (1)
Reinforcing bar.
4. box beam according to claim 1, which is characterized in that the fixing sleeve (42) is mutually fixed with the extended steel beam
One end is provided with the first fixing groove, and the extended steel beam is provided with the first hook portion close to one end of the fixing sleeve (42), described
First hook portion is hooked in first fixing groove.
5. box beam according to claim 1, which is characterized in that be provided with through slot, the stretching on the fixed column (44)
Steel beam is arranged in the through slot, restraining position ring block (46) is arranged on the fixed column (44), the stop collar (46) is located at described solid
Side of the fixed column (44) far from the fixing sleeve (42), the extended steel beam are provided with the far from one end of the fixing sleeve (42)
Two hook portions, second hook portion are hooked on the stop collar (46).
6. box beam according to claim 1, which is characterized in that it is embedded with the second reinforcing bar in the fixed column (44), it is described
Second reinforcing bar is fixedly connected on reinforcing bar pre-buried in the load-bearing bases (1)；Or
The material of the fixed column (44) is metal, and the fixed column (44) is connected to steel pre-buried in the load-bearing bases (1)
Muscle.
7. box beam according to claim 1, which is characterized in that the one of the fixing sleeve (42) separate the fixing seat (41)
End is arranged with elastic component (45), the both ends of the elastic component (45) close to the fixed column (44) on the fixed column (44)
It is connected to bottom surface and the fixing sleeve (42) of the chamber respectively.
8. box beam according to claim 1, which is characterized in that further include support column (2), under the load-bearing bases (1)
Surface is provided with multiple limiting slots (8), is plugged with the support column (2) in the limiting slot (8), the support column (2) and institute
It states and is fixedly connected between load-bearing bases (1) by connector (6).
9. box beam according to claim 8, which is characterized in that the top of the support column (2) is provided with the first connecting hole
(7), the second connecting hole (5) matched with first connecting hole (7), the limit are provided on the load-bearing bases (1)
Second connecting hole (5) is provided on two opposite side walls of slot (8), the connector (6) is arranged in described second
In connecting hole (5) and first connecting hole (7).
10. box beam according to claim 8, which is characterized in that the bottom of the support column (2) is provided with pedestal (3), institute
Pedestal (3) is stated to be fixed on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584884.2A CN110172899A (en) | 2019-07-01 | 2019-07-01 | A kind of box beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584884.2A CN110172899A (en) | 2019-07-01 | 2019-07-01 | A kind of box beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110172899A true CN110172899A (en) | 2019-08-27 |
Family
ID=67699529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910584884.2A Pending CN110172899A (en) | 2019-07-01 | 2019-07-01 | A kind of box beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110172899A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723119A (en) * | 2019-09-26 | 2020-01-24 | 东莞理工学院 | Armored car fault analysis is with foldable traction frame |
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|---|---|---|---|---|
| CN104294751A (en) * | 2014-09-24 | 2015-01-21 | 安徽建工集团有限公司 | Reinforcing structure for cross section of large-span prestressed concrete box girder |
| KR101693266B1 (en) * | 2016-06-15 | 2017-01-05 | 송정우 | Hybrid girder |
| CN108532438A (en) * | 2018-03-30 | 2018-09-14 | 中交路桥北方工程有限公司 | A kind of small curved bridge box beam of karst region high-pier large-span |
| CN108914760A (en) * | 2018-09-25 | 2018-11-30 | 郑州大学 | Consider the box beam and its prestress strengthening method of external prestressing strengthening |
| CN208899301U (en) * | 2018-09-25 | 2019-05-24 | 郑州大学 | Consider the box beam of external prestressing strengthening |
| CN210315185U (en) * | 2019-07-01 | 2020-04-14 | 上海宝冶集团有限公司 | Box girder |
-
2019
- 2019-07-01 CN CN201910584884.2A patent/CN110172899A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294751A (en) * | 2014-09-24 | 2015-01-21 | 安徽建工集团有限公司 | Reinforcing structure for cross section of large-span prestressed concrete box girder |
| KR101693266B1 (en) * | 2016-06-15 | 2017-01-05 | 송정우 | Hybrid girder |
| CN108532438A (en) * | 2018-03-30 | 2018-09-14 | 中交路桥北方工程有限公司 | A kind of small curved bridge box beam of karst region high-pier large-span |
| CN108914760A (en) * | 2018-09-25 | 2018-11-30 | 郑州大学 | Consider the box beam and its prestress strengthening method of external prestressing strengthening |
| CN208899301U (en) * | 2018-09-25 | 2019-05-24 | 郑州大学 | Consider the box beam of external prestressing strengthening |
| CN210315185U (en) * | 2019-07-01 | 2020-04-14 | 上海宝冶集团有限公司 | Box girder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110723119A (en) * | 2019-09-26 | 2020-01-24 | 东莞理工学院 | Armored car fault analysis is with foldable traction frame |
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