CN110735387A - Transverse connection device for small box girders of bridge and construction method thereof - Google Patents
Transverse connection device for small box girders of bridge and construction method thereof Download PDFInfo
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- CN110735387A CN110735387A CN201911067119.XA CN201911067119A CN110735387A CN 110735387 A CN110735387 A CN 110735387A CN 201911067119 A CN201911067119 A CN 201911067119A CN 110735387 A CN110735387 A CN 110735387A
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- small box
- steel plate
- bearing steel
- box girder
- bridge
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- 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
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- 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
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- 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
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a transverse connection device for small box girders of a bridge and a construction method thereof, wherein the device comprises a bearing part and a limiting part, the limiting part is circumferentially arranged around the bearing part and is connected to the small box girders, the bearing part comprises a fixed anchor bolt, a fixed bracket and two bearing steel plates respectively connected to two ends of the fixed bracket, and the fixed anchor bolt is connected between the bearing steel plates and the small box girders.
Description
Technical Field
The invention belongs to the technical field of connection of small box girders of bridges, and particularly relates to a transverse connection device for small box girders of bridges and a construction method thereof.
Background
At the present stage, the road industry in China is gradually changed from a construction stage to a maintenance and reinforcement stage. In a bridge structure, particularly a bridge with a main beam structure of a prefabricated small box girder, the transverse connection of the box girder is weak.
In fact, in the 20m prefabricated small box girder, the transverse connection between the box girders is not considered, namely, no diaphragm is arranged, and the transverse connection is only carried out by virtue of the wet joints between the box girders, so that the pouring quality of the wet joints is uneven.
With the increasing traffic volume of roads, and the frequent occurrence of overloaded vehicles, the transverse connection between box girders is weak, so that the wet joint position is easy to crack, including the crack of a pavement layer, and water on the bridge deck is easy to permeate from the crack position, thereby endangering the safety of the bridge structure.
The traditional small box girder reinforcing method is a diaphragm plate reinforcing technology, the diaphragm plate reinforcing technology is a concrete cast-in-place method, the curing time is as long as 28 days after the concrete is poured, disturbance to the poured concrete is generated during the curing period, the construction conditions are harsh, and therefore the construction quality cannot be guaranteed.
Disclosure of Invention
The invention aims to provide transverse connection devices of small bridge box girders, which are easy to construct and good in use effect, and a construction method thereof.
In order to solve the technical problems, the invention provides the following technical scheme: the transverse connection device for the small box girder of the bridge comprises a bearing part and a limiting part, wherein the limiting part is circumferentially distributed around the bearing part and is connected to the small box girder; the bearing part comprises a fixed anchor bolt, a fixed support and two bearing steel plates which are respectively connected to the two ends of the fixed support, and the fixed anchor bolt is connected between the bearing steel plates and the small box girder.
Anchor holes are reserved on the small box girder and the bearing steel plate, and the fixing anchor bolts are connected between the anchor holes of the small box girder and the bearing steel plate.
Spacing portion comprises spacing reinforcing bar, and spacing reinforcing bar sets up around bearing steel plate circumference.
The fixed support consists of I-beams, the I-beams comprise upper I-beams, lower I-beams and supporting I-beams, the upper I-beams are arranged in parallel to the lower I-beams, and the supporting I-beams are connected between the upper I-beams and the lower I-beams.
An oblique I-steel is further connected between the upper I-steel and the lower I-steel, the end of the oblique I-steel is connected with the middle point of the lower I-steel, and the other end of the oblique I-steel is connected with the end part of the upper I-steel.
The length of the upper I-shaped steel is shorter than that of the lower I-shaped steel.
The bearing steel plate is obliquely arranged from bottom to top towards the direction of the fixed support.
A construction method of the transverse connection device for the small box girder of the bridge sequentially comprises the following steps:
(1) according to the position of a small box girder needing to be reinforced, after the position of a steel beam on the small box girder is found, chiseling a loose layer on the surface of concrete, chiseling the surface of the concrete, lofting the position of a bearing steel plate, and determining the shape and the size of the bearing steel plate;
(2) cutting the bearing steel plate, and drilling an anchor hole in the bearing steel plate;
(3) connecting the small box girder and the bearing steel plate through a fixing anchor bolt;
(4) combining the I-shaped steel into a fixed bracket;
(5) the fixed bracket and the installed bearing steel plate are firmly reinforced to form integral bodies;
(6) coating bearing steel plate, fixing anchor bolt and fixing support with anticorrosive coating
In the step (1), after the position of the bearing steel plate is lofted, limiting steel bars need to be arranged around the lofting position.
In the step (3), the method for connecting the small box girder and the bearing steel plate by the fixing anchor bolt comprises the following steps: firstly: fixing a fixing anchor bolt to the concrete of the small box girder; then: and the end part of the fixing anchor bolt penetrates through the anchor hole on the bearing steel plate and is fixedly connected with the bearing steel plate.
Through the technical scheme, the device has the beneficial effects that the device is used for transverse connection between the small box girders of the bridge, is particularly suitable for transverse connection between the small box girders with the span of 20m, is excellent choices for saving cost and ensuring construction period, can provide a reliable solution for the weak transverse connection between the small box girders, can effectively improve the integrity between the small box girders, is quick in construction and easy to ensure construction quality, and is high in stability and safer in use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a load-bearing steel plate;
FIG. 3 is a schematic diagram of the present invention.
Detailed Description
Bridge cell roof beam transverse connection device, as shown in fig. 1~3, including bearing part and spacing portion, the bearing part is used for realizing the connection of two adjacent cell roof beams 5 of bridge, bears the pulling force between two cell roof beams 5, and spacing portion is used for spacing bearing part, prevents to appear sliding.
The bearing part comprises a fixed support 4, the fixed support 4 is composed of I-shaped steel, and the I-shaped steel comprises an upper I-shaped steel 6, a lower I-shaped steel 7 and a supporting I-shaped steel 8.
Go up I-steel 6 and be on a parallel with I-steel 7 setting down, support I-steel 8 and connect between last I-steel 6 and I-steel 7 down, support I-steel 8 vertical setting, go up I-steel 6 and the equal level setting of I-steel 7 down. Meanwhile, the two ends of the supporting I-shaped steel 8 are respectively connected with the middle points of the upper I-shaped steel 6 and the lower I-shaped steel 7, so that the stress is uniform. The length of the upper I-shaped steel 6 is shorter than that of the lower I-shaped steel 7, so that the stress is uniform.
Two oblique H-beams 9 are further connected between the upper H-beam 6 and the lower H-beam 7, the ends of the oblique H-beams 9 are connected with the middle point of the lower H-beam 7, the other ends of the oblique H-beams 9 are connected with the end portion of the upper H-beam 6, the fixing support 4 forms a triangular support through the upper H-beam 6, the lower H-beam 7, the supporting H-beams 8 and the oblique H-beams 9, the stability is high, the upper H-beam 6, the lower H-beam 7, the supporting H-beams 8 and the oblique H-beams 9 are made of Q345c materials, and the service life is long.
Be provided with at fixed bolster 4 both ends and bear steel sheet 1, bear steel sheet 1 from supreme 4 direction slope settings to the fixed bolster, through the slope setting that bears steel sheet 1, improve the area of contact with little case roof beam 5, and then strengthen the atress between the two.
The bearing steel plate 1 is provided with a fixing anchor bolt 2, and the end part of the fixing anchor bolt 2 connected with the small box girder 5 is arranged in an upward inclined way. The connecting mode of the fixing anchor bolt 2 and the bearing steel plate 1 is as follows: an anchor hole is reserved on the bearing steel plate 1, and the fixing anchor bolt 2 is in threaded connection with the anchor hole. The tip and the small box girder 5 of fixed crab-bolt 2 are connected, and small box girder 5 is with fixed crab-bolt 2's connected mode is: an anchor hole is reserved on the small box girder 5, and the fixing anchor bolt 2 is screwed with the anchor hole on the small box girder 5.
Set up spacing portion along bearing 1 circumference of steel sheet, spacing portion comprises spacing reinforcing bar 3, and spacing reinforcing bar 3 sets up around bearing 1 circumference of steel sheet. The limiting steel bars 3 are connected to the small box girder 5. Can carry on spacingly to bearing steel sheet 1 through setting up spacing reinforcing bar 3, prevent to bear the phenomenon that sliding appears in steel sheet 1, improve whole transverse connection device's stability.
The invention also discloses a construction method of bridge small box girder transverse connection devices, which sequentially comprises the following steps:
(1) and (3) according to the position of the small box girder needing to be reinforced, after the position of the steel beam on the small box girder is found, chiseling off a loose layer on the surface of the concrete, chiseling the surface of the concrete, lofting the position of the bearing steel plate, and determining the shape and the size of the bearing steel plate. In this step, after the position of the bearing steel plate is lofted, limiting reinforcing steel bars need to be arranged around the lofting position. The phenomenon that the bearing steel plate slides can be prevented by arranging the limiting reinforcing steel bars, and the bearing steel plate is higher in stability.
(2) And cutting the bearing steel plate, and drilling an anchor hole in the bearing steel plate.
(3) The small box girder and the bearing steel plate are connected through the fixing anchor bolt. The specific method of the step is as follows: firstly: fixing a fixing anchor bolt to the concrete of the small box girder; then: and the end part of the fixing anchor bolt penetrates through the anchor hole on the bearing steel plate and is fixedly connected with the bearing steel plate. In this step, will fix the crab-bolt and be connected to the little case roof beam earlier, will fix the crab-bolt and be connected to on bearing the weight of the steel sheet again, easily realize bearing the weight of the fixed of steel sheet, reduce intensity of labour in the work progress. It should be noted that the bearing steel plate is abutted against the small box girder after being connected with the fixing anchor bolt, and whether the limiting steel bars are arranged around the bearing steel plate is required to be checked after the bearing steel plate is connected with the small box girder.
(4) And combining the I-shaped steel into a fixed bracket.
(7) The fixed bracket and the installed bearing steel plate are firmly reinforced to form integral bodies.
(8) And (4) coating the bearing steel plate, the fixing anchor bolt and the fixing bracket by using anticorrosive coating.
The device is used for transverse connection between the small box girders of the bridge, is particularly suitable for transverse connection between the small box girders with the span of 20m, is excellent choices for saving cost and shortening construction period, can provide a reliable solution for the weak transverse connection between the small box girders, can effectively improve the integrity between the small box girders, and simultaneously has the advantages of quick construction and easy guarantee of construction quality.
Claims (10)
1. Bridge trabecula roof beam lateral connection device, its characterized in that: the device comprises a bearing part and a limiting part, wherein the limiting part is circumferentially distributed around the bearing part; the bearing part comprises a fixed anchor bolt, a fixed support and two bearing steel plates which are respectively connected to the two ends of the fixed support, and the fixed anchor bolt is connected between the bearing steel plates and the small box girder.
2. The bridge box girder transverse linkage device according to claim 1, wherein: anchor holes are reserved on the small box girder and the bearing steel plate, and the fixing anchor bolts are connected between the anchor holes of the small box girder and the bearing steel plate.
3. The bridge trabecular transverse link device of claim 2, wherein: spacing portion comprises spacing reinforcing bar, and spacing reinforcing bar sets up around bearing steel plate circumference.
4. The bridge trabecular transverse link device of claim 3, wherein: the fixed support consists of I-beams, the I-beams comprise upper I-beams, lower I-beams and supporting I-beams, the upper I-beams are arranged in parallel to the lower I-beams, and the supporting I-beams are connected between the upper I-beams and the lower I-beams.
5. The transverse connection device for the small box girder of the bridge according to claim 4, wherein an oblique I-beam is connected between the upper I-beam and the lower I-beam, the end of the oblique I-beam is connected with the middle point of the lower I-beam, and the other end of the oblique I-beam is connected with the end part of the upper I-beam.
6. The bridge girder transverse linkage device of claim 5, wherein: the length of the upper I-shaped steel is shorter than that of the lower I-shaped steel.
7. The device for connecting a small box girder of a bridge of any of claims 1 to 6, wherein the bearing steel plate is arranged in an inclined manner from bottom to top towards the direction of the fixed bracket.
8, A construction method of the transverse connection device of the small box girder of the bridge as claimed in claim 1, characterized in that the method comprises the following steps in sequence:
(1) according to the position of a small box girder needing to be reinforced, after the position of a steel beam on the small box girder is found, chiseling a loose layer on the surface of concrete, chiseling the surface of the concrete, lofting the position of a bearing steel plate, and determining the shape and the size of the bearing steel plate;
(2) cutting the bearing steel plate, and drilling an anchor hole in the bearing steel plate;
(3) connecting the small box girder and the bearing steel plate through a fixing anchor bolt;
(4) combining the I-shaped steel into a fixed bracket;
(5) the fixed bracket and the installed bearing steel plate are firmly reinforced to form integral bodies;
(6) and (4) coating the bearing steel plate, the fixing anchor bolt and the fixing bracket by using anticorrosive coating.
9. The construction method of the transverse connection device for the small box girder of the bridge according to claim 8, characterized in that: in the step (1), after the position of the bearing steel plate is lofted, limiting steel bars need to be arranged around the lofting position.
10. The construction method of the transverse connection device for the small box girder of the bridge according to claim 9, characterized in that: in the step (3), the method for connecting the small box girder and the bearing steel plate by the fixing anchor bolt comprises the following steps: firstly: fixing a fixing anchor bolt to the concrete of the small box girder; then: and the end part of the fixing anchor bolt penetrates through the anchor hole on the bearing steel plate and is fixedly connected with the bearing steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067119.XA CN110735387A (en) | 2019-11-04 | 2019-11-04 | Transverse connection device for small box girders of bridge and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911067119.XA CN110735387A (en) | 2019-11-04 | 2019-11-04 | Transverse connection device for small box girders of bridge and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110735387A true CN110735387A (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911067119.XA Pending CN110735387A (en) | 2019-11-04 | 2019-11-04 | Transverse connection device for small box girders of bridge and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047186A (en) * | 2021-03-24 | 2021-06-29 | 华东交通大学 | Bridge reinforcing apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040020A (en) * | 2005-08-04 | 2007-02-15 | Ps Mitsubishi Construction Co Ltd | Construction method for prestressed concrete box girder bridge |
| CN202298482U (en) * | 2011-06-17 | 2012-07-04 | 广东工业大学 | Newly-added steel truss-reinforced concrete box girder bridge structure |
| CN103938556A (en) * | 2014-04-29 | 2014-07-23 | 长安大学 | Transverse reinforcing device of space double K-shaped supports of concrete beam bridge with T-shaped section |
| CN104372748A (en) * | 2014-11-15 | 2015-02-25 | 北京市政路桥股份有限公司 | Steel truss diaphragm for bridge broadening new-old bridge connecting |
| CN107100092A (en) * | 2017-05-21 | 2017-08-29 | 山西省交通科学研究院 | The quick bridge widening structure and installation method of a kind of uninterrupted traffic |
| CN109610350A (en) * | 2018-12-29 | 2019-04-12 | 北京工业大学 | A kind of ruggedized construction of prestressed concrete box girder |
-
2019
- 2019-11-04 CN CN201911067119.XA patent/CN110735387A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007040020A (en) * | 2005-08-04 | 2007-02-15 | Ps Mitsubishi Construction Co Ltd | Construction method for prestressed concrete box girder bridge |
| CN202298482U (en) * | 2011-06-17 | 2012-07-04 | 广东工业大学 | Newly-added steel truss-reinforced concrete box girder bridge structure |
| CN103938556A (en) * | 2014-04-29 | 2014-07-23 | 长安大学 | Transverse reinforcing device of space double K-shaped supports of concrete beam bridge with T-shaped section |
| CN104372748A (en) * | 2014-11-15 | 2015-02-25 | 北京市政路桥股份有限公司 | Steel truss diaphragm for bridge broadening new-old bridge connecting |
| CN107100092A (en) * | 2017-05-21 | 2017-08-29 | 山西省交通科学研究院 | The quick bridge widening structure and installation method of a kind of uninterrupted traffic |
| CN109610350A (en) * | 2018-12-29 | 2019-04-12 | 北京工业大学 | A kind of ruggedized construction of prestressed concrete box girder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047186A (en) * | 2021-03-24 | 2021-06-29 | 华东交通大学 | Bridge reinforcing apparatus |
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Application publication date: 20200131 |
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