CN219298022U - Reinforced structure of hyperbolic arch bridge - Google Patents
Reinforced structure of hyperbolic arch bridge Download PDFInfo
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- CN219298022U CN219298022U CN202320170904.3U CN202320170904U CN219298022U CN 219298022 U CN219298022 U CN 219298022U CN 202320170904 U CN202320170904 U CN 202320170904U CN 219298022 U CN219298022 U CN 219298022U
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Abstract
The utility model discloses a reinforcing structure of a hyperbolic arch bridge, which comprises a plurality of reinforcing arch rings arranged between adjacent bridge ribs, wherein each reinforcing arch ring comprises a reinforcement cage, connecting reinforcement bars, arch wave embedded bars and concrete; one end of the arch wave planted bar is connected with the reinforcement cage, and the other end of the arch wave planted bar extends into the arch wave for fixation; connecting reinforcing steel bars pass through the bridge ribs to connect adjacent reinforcing steel bar cages, and concrete is filled in the space between the arch wave and the adjacent bridge ribs; the reinforcement cage comprises a plurality of longitudinal reinforcement bars which are arranged in parallel and reinforcement hoops which are connected and fixed with the longitudinal reinforcement bars. According to the technical scheme, the space between the arch wave of the main arch ring and the adjacent bridge rib is filled by the reinforced concrete structure formed by the reinforcement cage of the reinforced arch ring, the arch wave embedded ribs and the concrete, so that the cross section area of the arch ring is increased, the bridge is reinforced, meanwhile, the adjacent reinforced arch ring is transversely connected by the connecting reinforcement, the transverse connection and the strength of the bridge are increased, the stability of the bridge is increased, and the service life of the bridge is prolonged.
Description
Technical Field
The utility model relates to the technical field of bridge reinforcement, in particular to a reinforcement structure of a hyperbolic arch bridge.
Background
The double arch bridge is the most arch bridge type built in the last century of 60-70 years in China. Due to the fact that the bridge construction technology equipment is horizontal at the time, engineers skillfully integrate double arch bridge into zero assembly, construction is facilitated, and materials are saved. Along with the increasing traffic of road, the bearing capacity of the hyperbolic arch bridge built in early years cannot meet the requirement of road traffic development, and under the condition that the bridge is not allowed to be pushed over and rebuilt under the economic condition, the improvement scheme has both functionality and economy, so that the improvement of the hyperbolic arch bridge is very necessary. At present, the reconstruction of the assembled main arch ring of the hyperbolic arch bridge mainly has two forms, namely, the reconstruction is carried out by dismantling and reworking, and the reinforcement is carried out above the arch ring, so that the existing diseases of the assembled main arch ring can be thoroughly reconstructed, but the defects of the existing diseases are also fatal: the bridge deck system, the filler on the arch, the side wall on the arch and other structures are required to be removed in a matched way, the traffic interruption time is long, and the manufacturing cost is high; generally, the U-shaped sleeve hoop is arranged on the bridge rib of the assembled main arch ring to enlarge the cross section for reinforcement, so that the existing diseases of the assembled main arch ring can be well covered, but the transverse connection strength is not increased.
Disclosure of Invention
The utility model mainly aims to provide a main arch ring reinforcing structure of a double-arch bridge, and aims to solve the problems that the transverse connection strength of the reinforcing structure of the existing double-arch bridge is not increased, and the durability of the bridge and the integral strength of the main arch ring structure cannot be remarkably increased.
In order to achieve the above purpose, the reinforcement structure of the hyperbolic arch bridge provided by the utility model comprises a plurality of reinforcement arch rings arranged between adjacent bridge ribs, wherein the reinforcement arch rings comprise reinforcement cages, connecting reinforcement bars, arch wave embedded bars and concrete; one end of the arch wave embedded bar is connected with the reinforcement cage, and the other end of the arch wave embedded bar extends into the arch wave for fixing; the connecting steel bars penetrate through the bridge ribs to connect adjacent steel bar cages, and the concrete is filled in the space between the arch wave and the adjacent bridge ribs; the steel reinforcement cage comprises a plurality of longitudinal steel bars which are arranged in parallel, and the steel reinforcement hoops which are connected and fixed with the longitudinal steel bars.
Preferably, the reinforcement arch rings are arranged at intervals, a diaphragm plate is arranged between the reinforcement arch rings, the diaphragm plate is arranged between the bridge ribs, the diaphragm plate comprises diaphragm plate stirrups and concrete, and diaphragm plate steel bars are connected with the connecting steel bars.
Preferably, a reinforcing arch is arranged between two adjacent bridge ribs provided with the diaphragm plate, the reinforcing arch comprises an arch reinforcement cage, arch wave embedded ribs and concrete, and the arch reinforcement cage is connected with the reinforcing arch ring through the connecting reinforcing steel bars.
Preferably, the bridge rib reinforcing cage further comprises a bridge rib reinforcing bar, one end of the bridge rib reinforcing bar is connected with the reinforcing cage, and the other end of the bridge rib reinforcing bar extends into the bridge rib for fixing.
Preferably, the arch wave planting bar is connected with the arch wave through a special modified epoxy adhesive, a modified vinyl ester adhesive or a modified urethane adhesive, and the connecting bar and the bridge rib planting bar are connected with the bridge rib through a special modified epoxy adhesive, a modified vinyl ester adhesive or a modified urethane adhesive.
Preferably, the arch wave embedded bars, the connecting bars and the bridge rib embedded bars all comprise HRB400 bars.
Preferably, the reinforcement cage further comprises transverse reinforcement bars, and the longitudinal reinforcement bars and the bridge rib planting reinforcement bars are connected to the transverse reinforcement bars.
Preferably, the concrete comprises a C45 self-compacting micro-expansive concrete.
According to the technical scheme, the space between the arch wave of the main arch ring and the adjacent bridge rib is filled by the reinforced concrete structure consisting of the reinforcement cage for reinforcing the arch ring, the arch wave embedded ribs and the concrete, so that the cross section area of the arch ring is increased, the bridge is reinforced, meanwhile, the adjacent reinforced arch ring is transversely connected by the connecting reinforcement, the transverse connection and the strength of the bridge are increased, the stability of the bridge is increased, and the service life of the bridge is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a reinforcement structure of a double arch bridge according to the present utility model.
Fig. 2 is a schematic diagram of the structure at A-A in fig. 1.
Fig. 3 is a schematic diagram of the structure at B-B in fig. 1.
Fig. 4 is a schematic view of the rebar structure at A-A (with separator) of fig. 1.
Fig. 5 is a schematic view of the rebar structure at A-A (without separator) of fig. 1.
Reference numerals illustrate:
1. bridge ribs; 2. reinforcing an arch ring; 3. a reinforcement cage; 4. connecting steel bars; 5. arched wave bar planting; 6. mixing soil; 7. arch wave; 8. longitudinal steel bars; 9. a reinforcing steel bar hoop; 10. a diaphragm; 11. a partition plate stirrup; 12. reinforcing the arch springing; 13. bridge rib planting ribs; 14. transverse steel bars.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.
Referring to fig. 1-5, the present utility model proposes a reinforcement structure of a double arch bridge, comprising a plurality of reinforcement arch rings 2 disposed between adjacent bridge ribs 1, wherein the reinforcement arch rings 2 comprise reinforcement cages 3, connection reinforcement 4, arch wave embedded reinforcement 5 and concrete 6; one end of the arch wave embedded bar 5 is connected with the reinforcement cage 3, and the other end of the arch wave embedded bar 5 extends into the arch wave 7 to be fixed; the connecting steel bars 4 pass through the bridge rib 1 to connect the adjacent steel reinforcement cages 3, and the concrete 6 is filled in the space between the arch wave 7 and the adjacent bridge rib 1; the reinforcement cage 3 comprises a plurality of longitudinal reinforcement bars 8 which are arranged in parallel, and reinforcement hoops 9 which are connected and fixed with the longitudinal reinforcement bars 8.
According to the technical scheme, the space between the arch wave 7 of the main arch ring and the adjacent bridge rib 1 is filled by the reinforced concrete 6 structure consisting of the reinforcement cage 3, the arch wave embedded ribs 5 and the concrete 6 of the reinforced arch ring 2, so that the cross section area of the arch ring is increased, the bridge is reinforced, meanwhile, the adjacent reinforced arch ring 2 is transversely connected through the connecting reinforcement 4, the transverse connection and strength of the bridge are increased, the stability of the bridge is increased, and the service life of the bridge is prolonged.
Specifically, after the arch wave planting bars 5 are planted and the longitudinal bars 8 are arranged, the connecting bars 4 and the bottom mould are arranged section by section, and the adhesive vibrator can be matched with the inserted vibrating rod to vibrate the concrete. The pouring sequence of the newly added arch wave 7 filled concrete should be symmetrically and evenly carried out from the arch feet of two banks to the arch crown. The concrete pouring construction joint is preferably arranged at the two quarter spans of the main arch ring, and the closure section is preferably arranged at the middle span of the vault. The folding temperature is preferably selected to be within the temperature range below 10 ℃.
Specifically, when reinforcement is performed, according to design specifications, the bearing capacity and the foundation stability of the foundation of the bridge abutment are checked after the main arch ring and the abdominal arch ring are reinforced. Thereby determining the number of reinforcing arches 2.
More specifically, during calculation, the reinforcing structure can completely support the load of the bridge body, so that the reduction of the load capacity caused by continuous aging of the bridge body can be prevented, and repeated maintenance and the like are required.
Specifically, the design specifications include, foundation bearing capacity checking, base eccentricity, base combined maximum stress, base stability checking a. Stability against overturning, the least adverse condition is known from the base stress checking, so the stability against overturning coefficient: b. stability against sliding: the calculation is performed by those skilled in the art of bridge design according to national standards such as the highway bridge reinforcing design Specification and the highway bridge technical Condition evaluation Standard.
In another embodiment of the present utility model, the reinforcement arch rings 2 are arranged at intervals, a diaphragm plate 10 is arranged between the reinforcement arch rings 2, the diaphragm plate 10 is arranged between the bridge ribs 1, the diaphragm plate 10 comprises a diaphragm plate stirrup 11 and concrete 6, and the diaphragm plate steel bars are connected with the connection steel bars 4.
In particular, a diaphragm 10 is provided to enhance the lateral strength of the hyperbolic bridge. More specifically, in the construction process, the balanced and symmetrical principle is adopted strictly according to the main arch ring reinforcement construction outline flow chart, after the middle arch wave 7 is filled and closed, the two side arch waves 7 are filled and closed, and the deformation condition of the main arch ring and the bridge abutment is observed by using a precise level in the whole process, if abnormality is found, relevant units are informed in time to carry out negotiation processing.
In a further embodiment of the utility model, a reinforcing arch 12 is arranged between two adjacent bridge ribs 1 provided with the diaphragm plates 10, the reinforcing arch 12 comprises an arch reinforcement cage 3, arch wave embedded bars 5 and concrete 6, and the arch reinforcement cage 3 is connected with the reinforcing arch ring 2 through the connecting bars 4.
Specifically, the arch springing reinforcement cage 3 and the reinforcement cage 3 of the reinforcement arch ring 2 are identical except for the structure without the middle section, more specifically, the main arch ring reinforcement arch springing 12 at the two ends is a two-quarter span from the bottom to the bridge.
In a further embodiment of the present utility model, the present utility model further comprises a bridge rib planting bar 13, one end of the bridge rib planting bar 13 is connected with the reinforcement cage 3, and the other end extends into the bridge rib 1 to be fixed.
Specifically, the bridge rib planting ribs 13 enhance the connection and strength between the reinforcing arch ring 2 and the bridge rib 1.
In yet another embodiment of the present utility model, the arched wave planting bar 5 is connected to the arched wave 7 by a special modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive, and the connecting bar 4 and the bridge rib planting bar 13 are connected to the bridge rib 1 by a special modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive.
Specifically, the adhesive for anchoring the structure and planting the ribs must be a special modified epoxy adhesive, a modified vinyl ester adhesive or a modified carbamate adhesive, the safety performance index of the adhesive must meet the specification of a table 4.6.6 of the reinforcing design Specification of highway bridges (JTG/T J22-2008), and the filler must be added during the preparation of the adhesive in factories and is strictly forbidden to be mixed in a construction site; an anchor agent formulated with cement and a micro-expanding agent as main components has not been used as a binder material.
In yet another embodiment of the present utility model, the arched wave embedded bars 5, the connecting bars 4 and the bridge rib embedded bars 13 each comprise HRB400 bars.
Specifically, the tensile strength standard value of the HRB400 steel bar is=400 MPa; the steel bars used for the bar planting are HRB400 steel bars without special requirements, and mechanical cutting is required, and the end face is not allowed to be cut by oxygen.
In yet another embodiment of the present utility model, the reinforcement cage 3 further comprises transverse reinforcement bars 14, and the longitudinal reinforcement bars 8 and the bridge rib planting bars 13 are connected to the transverse reinforcement bars 14.
Specifically, the transverse steel bars 14 are connected with the bridge rib embedded bars 13 connected with the bridge ribs 1 at two sides, so that the connection and strength between the reinforcement arch ring 2 and the bridge ribs 1 are enhanced.
In yet another embodiment of the utility model, the concrete 6 comprises a C45 self-compacting micro-expansive concrete.
Specifically, the C45 self-compaction micro-expansion concrete mixing ratio has the following technical indexes:
water-cement ratio: 0.35 to 0.5 retarder parameters: 0.45 to 0.55 percent
Parameters of the expanding agent: slump of 7.00-9.00%: 18.0 to 22.0 cm
Concrete expansion rate: initial setting time of 0.01-0.04% concrete: for more than 8.0 hours
The foregoing description of the preferred embodiments of the present utility model should not be construed as limiting the scope of the utility model, but rather utilizing equivalent structural changes made in the present utility model description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present utility model.
Claims (8)
1. The utility model provides a reinforced structure of hyperbolic arch bridge which is characterized in that, include a plurality of reinforcing arch rings that set up between adjacent bridge rib, the reinforcing arch ring includes steel reinforcement cage, connecting reinforcement, arched wave planting muscle and concrete; one end of the arch wave embedded bar is connected with the reinforcement cage, and the other end of the arch wave embedded bar extends into the arch wave for fixing; the connecting steel bars penetrate through the bridge ribs to connect adjacent steel bar cages, and the concrete is filled in the space between the arch wave and the adjacent bridge ribs; the steel reinforcement cage comprises a plurality of longitudinal steel bars which are arranged in parallel, and steel reinforcement hoops which are connected and fixed with the longitudinal steel bars.
2. A reinforced structure of a double arch bridge as recited in claim 1, wherein said reinforcing arch rings are spaced apart with a bulkhead between them, said bulkhead being disposed between said bridge ribs, said bulkhead including bulkhead stirrups and concrete, said bulkhead rebar being connected to said connecting rebar.
3. A reinforced structure of a double arch bridge according to claim 2, wherein a reinforcing arch is provided between two adjacent bridge ribs provided with said diaphragm, said reinforcing arch comprising a arch reinforcement cage, arch reinforcement and concrete, said arch reinforcement cage being connected to said reinforcing arch ring by said connecting reinforcement.
4. A reinforced structure of a double arch bridge as recited in claim 1, further comprising a bridge rib bar, wherein one end of said bridge rib bar is connected to said reinforcement cage, and the other end extends into said bridge rib for fixation.
5. A reinforced structure of a double arch bridge as recited in claim 4, wherein said arch-shaped reinforcing bar is connected to said arch by a dedicated modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive, and said connecting reinforcing bar and said bridge rib reinforcing bar are connected to said bridge rib by a dedicated modified epoxy adhesive, modified vinyl ester adhesive or modified urethane adhesive.
6. A reinforced structure of a double arch bridge according to claim 4, wherein said arch-shaped reinforcing bars, said connecting bars, and said bridge rib reinforcing bars each comprise HRB400 bars.
7. A reinforced structure for a double arch bridge as recited in claim 4, wherein said reinforcement cage further comprises transverse bars, said longitudinal bars and said bridge rib implants are connected to said transverse bars.
8. A reinforced structure for a double arch bridge according to any one of claims 1-7, wherein said concrete comprises C45 self-compacting micro-expansive concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170904.3U CN219298022U (en) | 2023-02-10 | 2023-02-10 | Reinforced structure of hyperbolic arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320170904.3U CN219298022U (en) | 2023-02-10 | 2023-02-10 | Reinforced structure of hyperbolic arch bridge |
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| Publication Number | Publication Date |
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| CN219298022U true CN219298022U (en) | 2023-07-04 |
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| CN202320170904.3U Active CN219298022U (en) | 2023-02-10 | 2023-02-10 | Reinforced structure of hyperbolic arch bridge |
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- 2023-02-10 CN CN202320170904.3U patent/CN219298022U/en active Active
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