CN209760057U - Reinforcing apparatus of suspension system arch bridge - Google Patents
Reinforcing apparatus of suspension system arch bridge Download PDFInfo
- Publication number
- CN209760057U CN209760057U CN201920461678.8U CN201920461678U CN209760057U CN 209760057 U CN209760057 U CN 209760057U CN 201920461678 U CN201920461678 U CN 201920461678U CN 209760057 U CN209760057 U CN 209760057U
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- steel box
- concrete
- bridge
- longitudinal beam
- steel
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Abstract
The utility model belongs to the bridge engineering field, concretely relates to reinforcing apparatus who suspends system arch bridge in midair. The reinforcing device is a steel box concrete longitudinal beam and consists of a steel box and concrete, the steel box is of a double-layer structure, and the concrete is filled in the double-layer structure of the steel box, so that a hollow structure is formed inside the steel box concrete longitudinal beam; the concrete is connected with the steel box through a pin. The steel box concrete longitudinal beam can be added to bear the external load effect, and the suspension system arch bridge is reinforced. The utility model discloses an effect and benefit lie in: the steel box can be used as a template, so that construction is convenient; the concrete improves the rigidity of the steel box, and the steel box and the concrete play a role together. The steel box and the concrete are combined to form the steel box concrete longitudinal beam, so that the rigidity of the structure is improved, and the comfort of the bridge is improved. Concrete is poured in the steel box, so that the temperature difference between the post-steel box and the bridge deck is reduced, and the temperature internal force of the structure is reduced.
Description
Technical Field
The utility model belongs to the bridge engineering field, concretely relates to reinforcing apparatus who suspends system arch bridge in midair.
Background
The arch bridge is a common bridge type due to beautiful curve and wide material consumption. The suspension system arch bridge adopts the cross beam to bear the load of the bridge deck, so that the longitudinal strength is insufficient, the vibration sense of the bridge crane is obvious, and the comfort level is poor. In addition, the suspension system arch bridge has poor safety, and if the cross beam is damaged, the normal use of the full bridge is influenced. The currently common reinforcing method is to add steel longitudinal beams between the cross beams and connect the steel longitudinal beams with the concrete bridge deck. The reinforcement method has the following problems: the temperature difference between the reinforced steel longitudinal beam and the concrete bridge deck is large, so that large internal force can be generated, and the approach concrete bridge deck is cracked.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a hang reinforcing apparatus of system arched bridge in midair.
The utility model provides a following technical scheme:
A reinforcing device of a suspension system arch bridge is a steel box concrete longitudinal beam 1; the steel box concrete longitudinal beam 1 consists of a steel box 3 and concrete 5, the steel box 3 is of a double-layer structure, and the concrete 5 is filled in the double-layer structure of the steel box 3, so that the interior of the steel box concrete longitudinal beam 1 forms a hollow structure; the concrete 5 is connected with the steel box 3 through a pin 4.
A method for reinforcing a suspension system arch bridge is characterized in that the external load bearing effect of a steel box concrete longitudinal beam 1 is increased; the concrete reinforcing steps are as follows:
(1) Erecting a steel box 3 between adjacent cross beams, then pouring concrete 5 in the steel box 3, and connecting the steel box 3 and the concrete through a pin 4 to form a steel box concrete longitudinal beam 1;
(2) After the construction of the steel box concrete longitudinal beam 1 is completed, all the suspension rods 2 are replaced, and the lower end of a new suspension rod 2 is fixed inside the steel box concrete longitudinal beam 1;
(3) Installing a bridge deck;
(4) Installing a drainage system and a central anti-collision guardrail;
(5) And pouring the full-bridge pavement and installing the handrail.
The utility model discloses an effect and benefit lie in: the steel box can be used as a template, so that construction is convenient; the concrete improves the rigidity of the steel box, and the steel box and the concrete play a role together. The steel box and the concrete are combined to form the steel box concrete longitudinal beam, so that the rigidity of the structure is improved, and the comfort of the bridge is improved. Concrete is poured in the steel box, so that the temperature difference between the post-steel box and the bridge deck is reduced, and the temperature internal force of the structure is reduced. The device of the utility model overcomes various problems existing in the prior art.
Drawings
Fig. 1 is a schematic elevation of a suspension arch bridge.
Fig. 2 is a schematic cross-sectional view of a suspension arch bridge.
Fig. 3 is a longitudinal view of a steel box concrete stringer.
Fig. 4 is a cross-sectional view of a steel box concrete stringer.
FIG. 5 is a schematic cross-sectional view of a steel box concrete longitudinal beam cross beam.
In the figure: 1, steel box concrete longitudinal beams; 2, a suspender; 3, steel boxes; 4, pins; and 5, concrete.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the drawings and the technical solutions.
As shown in fig. 1 and 2, the suspension arch bridge has a net span of 127.226m +147.992m +127.226m and a width of 32.5m, and is provided with 6 roadways and two-side sidewalks.
The method for reinforcing the suspension system arch bridge comprises the following steps:
1. And (4) dismantling the sidewalk plates at the two sides, the inner side wall and the outer side wall and the stainless steel handrail.
2. Removing a portion of the deck structure from the first reinforcement, comprising:
(1) C30 anticollision wall
(2) Steel longeron
(3) corbel at hanging point
3. And (5) removing the bridge deck of the main bridge.
4. And (5) prefabricating the bridge deck in a prefabricating field.
5. Constructing a steel box concrete longitudinal beam 1 at the position of the dismantled steel longitudinal beam, wherein the steel box concrete longitudinal beam 1 is used as a reinforcing device and bears the action of external load; the steel box concrete longitudinal beam 1 consists of a steel box 3 and concrete 5, wherein the concrete 5 is filled in a double-layer structure of the steel box 3 and is connected with the steel box 3 through a pin 4; the interior of the steel box concrete longitudinal beam 1 is of a hollow structure, and is shown in figures 3, 4 and 5.
6. After the construction of the steel box concrete longitudinal beam 1 is completed, all the suspenders 2 are replaced, and one pair of suspenders is replaced each time.
7. And installing newly prefabricated bridge deck boards and bridge deck boards on two sides of the cast-in-place steel box 3.
8. and (5) removing and pouring concrete at the expansion joint of the bridge deck, and installing the new expansion joint.
9. And constructing a cast-in-situ bridge deck and an anti-collision guardrail.
10. A drainage system and a central crash barrier are installed.
11. and (5) pouring the full-bridge pavement again, and installing the handrail.
the steel box concrete longitudinal beam 1 is 2.2m high and 1m wide; the wall thickness of the top of the steel box 3 is 20mm, the wall thickness of the web plate is 12mm, and the length of the pin 4 is 150 mm.
Material characteristics: the steel box 3 is made of Q235 steel, and the concrete 5 is made of C30 concrete.
Load grade: and (5) highway level I.
Designing speed: 60 km/h.
Claims (1)
1. The reinforcing device of the suspension system arch bridge is characterized in that the reinforcing device is a steel box concrete longitudinal beam (1) and consists of a steel box (3) and concrete (5), the steel box (3) is of a double-layer structure, and the concrete (5) is filled in the double-layer structure of the steel box (3) so that the interior of the steel box concrete longitudinal beam (1) forms a hollow structure; the concrete (5) is connected with the steel box (3) through a pin (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461678.8U CN209760057U (en) | 2019-04-08 | 2019-04-08 | Reinforcing apparatus of suspension system arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920461678.8U CN209760057U (en) | 2019-04-08 | 2019-04-08 | Reinforcing apparatus of suspension system arch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209760057U true CN209760057U (en) | 2019-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920461678.8U Active CN209760057U (en) | 2019-04-08 | 2019-04-08 | Reinforcing apparatus of suspension system arch bridge |
Country Status (1)
| Country | Link |
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| CN (1) | CN209760057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868757A (en) * | 2019-04-08 | 2019-06-11 | 大连理工大学 | A kind of reinforcing device and method of suspention system arch bridge |
-
2019
- 2019-04-08 CN CN201920461678.8U patent/CN209760057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109868757A (en) * | 2019-04-08 | 2019-06-11 | 大连理工大学 | A kind of reinforcing device and method of suspention system arch bridge |
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