CN220224913U - Anticorrosion structure of centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot - Google Patents
Anticorrosion structure of centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot Download PDFInfo
- Publication number
- CN220224913U CN220224913U CN202321832375.5U CN202321832375U CN220224913U CN 220224913 U CN220224913 U CN 220224913U CN 202321832375 U CN202321832375 U CN 202321832375U CN 220224913 U CN220224913 U CN 220224913U
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- China
- Prior art keywords
- arch
- steel pipe
- outer sleeve
- dumbbell
- foot
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 105
- 239000010959 steel Substances 0.000 title claims abstract description 105
- 239000004567 concrete Substances 0.000 title claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims abstract description 18
- 239000004593 Epoxy Substances 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005536 corrosion prevention Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model relates to the technical field of arch rib corrosion prevention, in particular to a corrosion prevention structure of a centering and upper-bearing dumbbell-shaped steel pipe concrete arch bridge arch foot, which comprises an outer sleeve steel pipe sleeved outside an arch foot arch rib, wherein epoxy mortar is filled in a cavity formed between the outer sleeve steel pipe and the arch foot arch rib, fiber cloth is wrapped outside the outer sleeve steel pipe, and a sealing steel plate clung to the arch foot arch rib is welded at an upper port of the outer sleeve steel pipe. The arch bridge arch foot structure can achieve multilayer anti-corrosion effect and prolong the service life.
Description
Technical Field
The utility model relates to the technical field of arch rib corrosion prevention, in particular to a corrosion prevention structure of a centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot.
Background
The steel tube concrete arch bridge is an arch structure with novel structure, moderate volume, long service life and good anti-seismic performance. The main structural components are arch ribs formed by steel pipes and concrete, and in the use process, the surfaces of the arch rib steel pipes are easily corroded, damaged and polluted by various external environments and physical factors, so that the demands of anti-corrosion technology are caused. The steel pipe concrete arch bridge can be subjected to long-term dry-wet alternate cyclic erosion, acid rain erosion and atmospheric pollution. The surface condition of the arch rib is related to the visual and beautiful appearance of the bridge, and meanwhile, if the arch rib is corroded, potential safety hazards are generated for transportation. In order to maintain the long-term maintenance freedom, the efficient and reliable anti-corrosion technology is adopted to avoid frequent maintenance and replacement, so that the construction and maintenance cost is reduced.
The corrosion protection technology commonly used at present generally comprises means such as physical protection, chemical protection, coating protection and the like. The physical methods such as high-pressure water cleaning, grinding wheel polishing, rust remover spraying and the like can effectively remove oxide skin and impurities on the surface of the steel pipe; the epoxy paint, the corrosion-resistant layer and the electrochemical protection method can form a protective film on the surface of the steel pipe.
Disclosure of Invention
The utility model aims to provide an anti-corrosion structure of a centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot, which can achieve a multilayer anti-corrosion effect and prolong the service life.
The technical scheme of the utility model is as follows: the anti-corrosion structure of the arch foot of the centering and upper-bearing dumbbell-shaped steel pipe concrete arch bridge comprises an outer sleeve steel pipe sleeved outside an arch foot arch rib, an epoxy mortar is filled in a cavity formed between the outer sleeve steel pipe and the arch foot arch rib, fiber cloth is wrapped outside the outer sleeve steel pipe, and a sealing steel plate clung to the arch foot arch rib is welded at a port positioned at the upper part of the outer sleeve steel pipe.
Further, the outer surface of the arch rib positioned on the arch springing is provided with a plurality of through long steel clamping grooves along the vertical direction of the section, and the inner wall of the outer sleeve steel pipe is welded with bolts matched with the steel clamping grooves.
Further, the steel clamping groove is formed by two parallel steel plates welded on the arch rib, and the length of the steel clamping groove is consistent with that of the outer sleeve steel pipe.
Further, the section of the arch rib of the steel tube concrete arch bridge is dumbbell-shaped, and the section area of the outer sleeve steel tube is dumbbell-shaped structure which is larger than that of the arch rib of the arch bridge.
Further, the outer sleeve steel pipe comprises two steel plates with semi-dumbbell-shaped sections, and the top and the bottom of the two semi-dumbbell-shaped steel plates are adhered and connected through groove welding.
Further, the sealing steel plate is connected with the upper end of the outer sleeve through single-sided welding.
Compared with the prior art, the utility model has the following advantages:
1. the reinforced concrete arch bridge arch foot structure is physically protected from outside to inside by using the fiber cloth, the outer sleeve steel pipe and the epoxy mortar, the epoxy mortar wrapped outside the arch rib isolates air, the contact between the arch rib and the external environment is avoided, the corrosion condition of the arch rib is reduced, the service life of the reinforced concrete arch bridge arch rib in fresh water or ocean environment is prolonged economically and efficiently under simple operation, the resource utilization rate is improved, and the social development is assisted.
2. The fiber cloth wrapped on the outer wall of the steel plate can effectively provide anti-corrosion protection for the steel pipe, and chloride ions are prevented from penetrating into the arch rib structure to corrode the arch rib.
3. The dumbbell-shaped steel pipe sleeved outside the arch rib can prevent the damage of the external environment and improve the bending resistance of the structure.
Drawings
FIG. 1 is a schematic view of an arch springing arrangement of the present utility model;
FIG. 2 is a schematic top view of the corrosion prevention section of the present utility model;
FIG. 3 is a cross-sectional view of an arch rib of the present utility model;
FIG. 4 is an enlarged view of a steel clamping groove according to the present utility model;
in the figure: 1-arch rib 2-steel clamping groove 3-steel plate 10-outer sleeve steel pipe 11-bolt 20-epoxy mortar 30-fiber cloth 40-sealing steel plate.
Detailed Description
In order to make the above features and advantages of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below, but the present utility model is not limited thereto.
Referring to fig. 1 to 4
The anti-corrosion structure of the arch foot of the centering and upper-bearing dumbbell-shaped steel pipe concrete arch bridge comprises an outer sleeve steel pipe 10 sleeved on the outer side of an arch foot arch rib 1, an epoxy mortar 20 is filled in a cavity formed between the outer sleeve steel pipe and the arch foot arch rib, a fiber cloth 30 is wrapped outside the outer sleeve steel pipe, and a sealing steel plate 40 tightly attached to the arch foot arch rib is welded at a port positioned on the upper part of the outer sleeve steel pipe.
In this embodiment, in order to better install the outer steel pipe, the surface that is located the arch bar arch rib is provided with a plurality of logical long steel draw-in groove 2 along the vertical direction of cross-section, the inner wall welding of outer steel pipe has the bolt 11 with steel draw-in groove matched with.
In this embodiment, the steel clamping groove is formed by two parallel steel plates 3 welded on the arch rib, and the length of the steel clamping groove is consistent with that of the outer sleeve steel pipe.
In this embodiment, the section of the arch rib of the steel pipe concrete arch bridge is dumbbell-shaped, and in order to better fill the epoxy mortar, the outer sleeve steel pipe is dumbbell-shaped with a section area larger than that of the arch rib of the arch bridge.
In this embodiment, the outer sleeve steel pipe comprises two steel plates with semi-dumbbell-shaped cross sections, and the bolt is welded on the inner wall of the semi-dumbbell-shaped steel plate. The tops and bottoms of the two semi-dumbbell-shaped steel plates are bonded and are connected through groove welding, and the welded and spliced size is larger than that of an original dumbbell-shaped steel pipe concrete arch bridge arch rib.
In this embodiment, the sealing steel plate is connected to the upper end of the outer sleeve through single-sided welding.
The anti-corrosion construction method comprises the following steps:
s1, cleaning up the arch rib, wherein the arch rib must be cleaned up before reinforcement.
S2, pre-welding a plurality of through long steel clamping grooves on the outer surface of the arch rib along the vertical direction of the section.
S3, prefabricating two steel plates with semi-dumbbell-shaped cross sections, wherein the size of the steel plates after splicing is larger than that of the original dumbbell-shaped steel pipes, and welding steel clamping groove bolts on the inner walls of the steel plates;
s4, inserting a bolt of a steel plate with a semi-dumbbell-shaped section into the steel clamping groove, and welding and assembling the top steel plate and the bottom steel plate.
S5, filling epoxy mortar between the outer sleeve steel pipe and the arch rib of the steel pipe concrete arch bridge.
S6, wrapping the steel tube with fiber cloth, wherein the fiber cloth has the advantages of high temperature resistance and corrosion resistance.
And S7, welding a sealing steel plate on the top of the anti-corrosion section (the outer sleeve steel pipe).
If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (6)
1. The anti-corrosion structure of the centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot is characterized by comprising an outer sleeve steel pipe sleeved outside an arch foot arch rib, epoxy mortar is filled in a cavity formed between the outer sleeve steel pipe and the arch foot arch rib, fiber cloth is wrapped outside the outer sleeve steel pipe, and a sealing steel plate clung to the arch foot arch rib is welded at a port positioned at the upper part of the outer sleeve steel pipe.
2. The anti-corrosion structure of the arch foot of the centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge according to claim 1, wherein a plurality of through-length steel clamping grooves are formed in the outer surface of the arch foot arch rib along the vertical direction of the section, and bolts matched with the steel clamping grooves are welded on the inner wall of the outer sleeve steel pipe.
3. The anticorrosion structure for the arch foot of the centering and upper bearing dumbbell-shaped steel pipe concrete arch bridge according to claim 2, wherein the steel clamping groove is formed by two parallel steel plates welded on the arch foot arch rib, and the length of the steel clamping groove is consistent with that of the outer sleeve steel pipe.
4. A corrosion protection structure for arch feet of a hollow and supported dumbbell-shaped steel pipe concrete arch bridge according to claim 1, 2 or 3, wherein the cross section of the arch rib of the steel pipe concrete arch bridge is dumbbell-shaped, and the outer sleeve steel pipe is dumbbell-shaped structure with a cross section area larger than that of the arch rib of the arch bridge.
5. The anti-corrosion structure for the arch foot of the centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge according to claim 4, wherein the outer sleeve steel pipe comprises two steel plates with semi-dumbbell-shaped cross sections, and the top and the bottom of the two semi-dumbbell-shaped steel plates are bonded and connected through groove welding.
6. The anticorrosive structure of arch feet of a centering and upper-bearing dumbbell-shaped steel pipe concrete arch bridge according to claim 1, 2, 3 or 5, wherein the sealing steel plate is connected with the upper end of the outer sleeve through single-sided welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321832375.5U CN220224913U (en) | 2023-07-13 | 2023-07-13 | Anticorrosion structure of centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321832375.5U CN220224913U (en) | 2023-07-13 | 2023-07-13 | Anticorrosion structure of centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220224913U true CN220224913U (en) | 2023-12-22 |
Family
ID=89177662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321832375.5U Active CN220224913U (en) | 2023-07-13 | 2023-07-13 | Anticorrosion structure of centering and upper bearing type dumbbell-shaped steel pipe concrete arch bridge arch foot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220224913U (en) |
-
2023
- 2023-07-13 CN CN202321832375.5U patent/CN220224913U/en active Active
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