CN117051677A - Steel-concrete combined temporary bridge suitable for marine environment - Google Patents
Steel-concrete combined temporary bridge suitable for marine environment Download PDFInfo
- Publication number
- CN117051677A CN117051677A CN202311162662.4A CN202311162662A CN117051677A CN 117051677 A CN117051677 A CN 117051677A CN 202311162662 A CN202311162662 A CN 202311162662A CN 117051677 A CN117051677 A CN 117051677A
- Authority
- CN
- China
- Prior art keywords
- bridge
- precast
- steel
- precast beam
- tenon
- 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
- 239000004567 concrete Substances 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000013016 damping Methods 0.000 claims description 4
- 239000011178 precast concrete Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims 7
- 239000011150 reinforced concrete Substances 0.000 claims 2
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E01D15/00—Movable or portable bridges; Floating bridges
- E01D15/12—Portable or sectional bridges
- E01D15/133—Portable or sectional bridges built-up from readily separable standardised sections or elements, e.g. Bailey bridges
-
- 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
-
- 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
- E01D19/005—Piers, trestles, bearings, expansion joints or parapets specially adapted for portable or sectional bridges
-
- 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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a steel-concrete combined temporary bridge suitable for marine environments, which comprises a temporary bridge foundation and bridge decks, wherein the temporary bridge foundation comprises two rows of steel pipe piles arranged along the bridge direction, a spandrel girder is erected at the top of each two steel pipe piles by a transverse bridge, each bridge deck adopts a simple girder erection mode, each bridge deck comprises at least two concrete precast girders, the bottom of each precast girder is arched, the bottom surfaces of the two ends of each precast girder are respectively supported on the two spandrel girders, at least two tenons integrally cast with the precast girders are respectively arranged at the two ends of each precast girder, mortises with the width equal to or larger than the thickness of the tenons are arranged between two adjacent tenons, and the precast girder ends of the two adjacent bridge decks are mutually embedded through the tenons and the mortises. The bridge deck slab can effectively resist corrosion of marine environment, and has long service life, strong bearing capacity and low manufacturing and maintenance cost.
Description
Technical Field
The invention belongs to the technical field of bridge construction, relates to a temporary bridge structure erected in underwater bridge construction, and in particular relates to a steel-concrete combined temporary bridge suitable for marine environments.
Background
When the underwater bridge is constructed, a temporary bridge is often required to be erected in the water and used as a construction material and a channel for equipment transportation and personnel walking. The temporary bridge is generally an assembled steel structure and comprises a foundation structure and a bridge deck system, wherein the foundation structure adopts steel pipe piles, a bearing beam is erected on every two steel pipe piles in the transverse bridge direction, the bridge deck system adopts a main beam consisting of longitudinal bailes or section steel, distribution beams are transversely paved on the main beam, and a patterned steel bridge panel is paved on the distribution beams.
In the inland river environment, after construction is completed, most materials can be disassembled and then construction is repeated, but in the marine environment, due to the high corrosion characteristic of seawater, components such as steel pipes, bailey, distribution beams and panels are seriously corroded, maintenance and inspection are needed frequently in use, in addition, the accurate mechanical reduction coefficient of the bridge components is difficult to accurately evaluate due to the corrosion degree, the specific load limiting traffic cannot be determined according to the corrosion degree, and therefore the bridge components are difficult to transfer to the next project to be used continuously, the project with the construction time longer than 2 years is generally scrapped after finishing, and the construction cost is increased due to one-time shakeout.
Disclosure of Invention
The invention aims to solve the problems, and provides a steel-concrete combined temporary bridge suitable for marine environments, which reduces the steel consumption of materials, reduces the influence of seawater corrosion on the stress of the temporary bridge, improves the turnover utilization rate of the materials, and reduces the construction cost.
The technical scheme of the invention is as follows:
the utility model provides a steel-concrete combination temporary bridge suitable for marine environment, includes temporary bridge basis and decking, the temporary bridge basis includes two steel-pipe piles that set up along the bridge, and a spandrel girder is set up to per two steel-pipe pile tops to the horizontal bridge, the decking supports on the spandrel girder, its characterized in that: bridge deck adopts the form of simply supported beam to erect, and every stride bridge deck includes two at least precast concrete beams, and every precast beam bottom is the arch, and every precast beam both ends bottom surface is supported respectively on two spandrel girders, and every precast beam both ends set up two at least tenons that pour with precast beam an organic whole respectively, and every tenon is for the platelike structure along precast beam direction of height, has the tongue-and-groove that the width is equal to or greater than tenon thickness between two adjacent tenons, and adjacent two precast beam ends of striding bridge deck are through tenon and tongue-and-groove mutual gomphosis.
Further, the invention can also comprise the following technical characteristics: at least two pull rod through holes are symmetrically formed in the transverse bridge direction on each precast beam, and a pair of pull rods are penetrated between the precast beams of each bridge deck through the pair of pull rod through holes, so that the precast beams of each bridge deck are connected into a whole.
At least two tie bars are respectively connected between the two ends of each precast beam, and the two ends of each root bar are anchored with the two ends of the precast beam.
The tie bar adopts a high-strength prestress steel bar or a prestress steel strand.
The two ends of each tie rod respectively penetrate through tenons at the two ends of the precast beam along the bridge direction and are in threaded connection with the anchor nuts.
The transverse bridge on each precast beam is provided with a plurality of lightening holes, and the lightening holes are symmetrically arranged on two sides of the transverse center line of the precast beam.
The two side planes of each tenon are parallel to the longitudinal direction of the precast beam, the two side planes of each tenon are of triangular structures, the bottom edge of each triangular tenon is positioned at the bottom of the bridge deck, one side edge of each triangular tenon inclines outwards of the bridge deck, and the other side edge of each triangular tenon inclines inwards of the bridge deck.
The top surface of the spandrel girder is provided with a damping rubber pad, and the bottoms of the two ends of each precast girder are supported on the damping rubber pads on the spandrel girder.
Compared with the existing steel structure temporary bridge, the invention has the following beneficial effects:
1. the bridge deck adopts a concrete prefabricated structure, so that the corrosion resistance and long-term service capability of the bridge under the marine environment are improved, and a large amount of maintenance cost can be saved.
2. The bridge deck adopts a tied arch bridge structure, and the bearing capacity of the upper structure of the temporary bridge is improved by utilizing the compression resistance of the arch structure.
3. The mortise and tenon type engagement structure is adopted between the arch feet of the prefabricated bridge deck, so that the two bridge decks can be supported on the same spandrel girder of a row of steel pipe piles while the overall stability of the structure is improved, and the widening spandrel girder is not required to be arranged by increasing the diameter of the steel pipe.
4. Compared with steel temporary bridge components such as bailey and the like, the tie bar has the advantages that the anti-corrosion coating area is greatly reduced, and the tie bar can be replaced at any time under the corrosion condition.
5. The concrete bridge deck is provided with the lightening holes, so that the weight of the bridge deck can be lightened, and the bridge deck is convenient to hoist and transport.
6. Each span of bridge deck adopts a plurality of precast concrete beams which are transversely connected into a whole by a pull rod, so that the hoisting and transportation weight of the single body can be reduced.
7. The concrete precast beam has low processing cost, can be recycled and reused completely after being used, can be broken after damage and is used for protecting the bridge head taper slope, and can save resources.
8. When overseas projects are constructed, the concrete bridge deck can be prefabricated on site, steel purchasing investment and international transportation and clearance costs are saved, and the cost advantage is more obvious.
Drawings
FIG. 1 is a forward side view of the present invention;
FIG. 2 is a schematic plan view of the present invention;
FIG. 3 is a transverse bridge elevational view of the present invention;
FIG. 4 is a schematic perspective view of a precast beam;
fig. 5 is an enlarged view at a in fig. 1;
fig. 6 is a schematic view of the installation state of the present invention.
Detailed Description
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the steel-concrete combined temporary bridge comprises a temporary bridge foundation and bridge decks, wherein the temporary bridge foundation comprises two rows of steel pipe piles 1 arranged along the bridge direction, a spandrel girder 2 is erected on the tops of every two steel pipe piles 1 in the transverse bridge direction, the bridge decks are supported on the spandrel girders, the bridge decks are in a simply supported girder erection mode, each bridge deck comprises at least two precast concrete girders 3, the bottoms of the precast girders 3 are arched, the bottoms of the two ends of each precast girder 3 are respectively supported on the two spandrel girders 2, at least two tenons 31 integrally cast with the precast girders are respectively arranged at the two ends of each precast girder 3, each tenon is of a plate-shaped structure along the height direction of the precast girder, a tenon groove 32 with the width equal to or larger than the thickness of the tenon is arranged between every two adjacent tenons 31, and the ends of the precast girders 3 of the adjacent two bridge decks are mutually embedded through the tenons 31 and the tenon groove 32.
In the implementation of the invention, at least two pull rod through holes 33 are symmetrically arranged on each precast beam 3 in the transverse bridge direction, and a pair of pull rods 4 are penetrated between each precast beam of each bridge deck through the pair of pull rod through holes, so that each precast beam of each bridge deck is connected into a whole.
Because the bottom of the precast beam is of an arch structure, in order to prevent the two ends of the arch from expanding outwards when the precast beam is lifted and bears vertical load, at least two tie bars 5 are respectively connected between the two ends of each precast beam 3, and the two ends of each tie bar are anchored with the two ends of the precast beam.
The tie bars 5 may be high strength pre-stressed steel bars or pre-stressed steel strands. To resist corrosion in the marine environment, tie bars are coated with an anti-corrosion coating.
Because the tenon is of a plate-shaped structure, in order to increase the shearing resistance of the tenon, two ends of each tie rod 5 can respectively penetrate through the tenons 31 at two ends of the precast beam along the bridge direction and be in threaded connection with the anchor nuts.
In the concrete implementation of the invention, in order to lighten the dead weight of the precast beam, a plurality of lightening holes 34 can be arranged on each precast beam 3 in the transverse bridge direction on the premise of ensuring the bearing capacity of the precast beam, and the lightening holes are symmetrically arranged on two sides of the transverse center line of the precast beam.
As shown in fig. 4, in the implementation of the present invention, the two side planes of each tenon 31 at two ends of the precast beam are parallel to the longitudinal direction of the precast beam, the two side planes of the tenons are in a triangle structure, the bottom edge of the triangle tenon is located at the bottom of the bridge deck, one side edge of the triangle tenon is inclined towards the outside of the bridge deck, and the other side edge of the triangle tenon is inclined towards the inside of the bridge deck. By the structure, on one hand, opposite ends of the two bridge deck boards can only be connected in a transverse bridge direction on the bridge deck, so that the bridge deck flatness is ensured, and on the other hand, the length of the tenon bottom edge is increased, so that the tenon bottom edges of the two bridge deck boards can be completely supported on the same spandrel girder, the stability of each bridge deck board is ensured, and the diameter of the steel pipe pile does not need to be increased for increasing the width of the spandrel girder.
As shown in fig. 6, in order to reduce the impact of the passing vehicle on the bridge to the bridge deck, the top surface of the spandrel girder 22 is provided with a shock-absorbing rubber pad 6, and the bottoms of the two ends of each precast girder 3 are supported on the shock-absorbing rubber pad 6 on the spandrel girder.
As shown in fig. 6, the construction method of the present invention is as follows:
after the setting of the temporary bridge foundation is completed, installing bridge decks one by one, hoisting precast beams 3 of each bridge deck one by one, pre-installing tie bars 5 on each precast beam, penetrating lifting ropes 7 in two symmetrical lightening holes 34 of each precast beam to be connected with a crane for hoisting, and penetrating pull rods 4 to connect all precast beams 3 into a whole after the hoisting of the precast beams of each bridge deck is completed; and mutually nesting the butt joint ends of the adjacent two bridge deck precast beams in a mortise and tenon joint mode.
Claims (8)
1. The utility model provides a steel-concrete combination temporary bridge suitable for marine environment, includes temporary bridge basis and decking, the temporary bridge basis includes two steel-pipe piles that set up along the bridge, and a spandrel girder is set up to per two steel-pipe pile tops to the horizontal bridge, the decking supports on the spandrel girder, its characterized in that: bridge deck adopts the form of simply supported beam to erect, and every stride bridge deck includes two at least precast concrete beams, and every precast beam bottom is the arch, and every precast beam both ends bottom surface is supported respectively on two spandrel girders, and every precast beam both ends set up two at least tenons that pour with precast beam an organic whole respectively, and every tenon is for the platelike structure along precast beam direction of height, has the tongue-and-groove that the width is equal to or greater than tenon thickness between two adjacent tenons, and adjacent two precast beam ends of striding bridge deck are through tenon and tongue-and-groove mutual gomphosis.
2. The steel-concrete composite bridge suitable for marine environments of claim 1, wherein: at least two pull rod through holes are symmetrically formed in the transverse bridge direction on each precast beam, and a pair of pull rods are penetrated between the precast beams of each bridge deck through the pair of pull rod through holes, so that the precast beams of each bridge deck are connected into a whole.
3. The steel-concrete composite bridge suitable for use in marine environments of claim 2, wherein: at least two tie bars are respectively connected between the two ends of each precast beam, and the two ends of each root bar are anchored with the two ends of the precast beam.
4. A reinforced concrete composite bridge according to claim 3, adapted for use in marine environments, wherein: the tie bar adopts a high-strength prestress steel bar or a prestress steel strand.
5. A reinforced concrete composite bridge according to claim 3, adapted for use in marine environments, wherein: the two ends of each tie rod respectively penetrate through tenons at the two ends of the precast beam along the bridge direction and are in threaded connection with the anchor nuts.
6. The steel-concrete composite bridge suitable for use in marine environments of claim 2, wherein: the transverse bridge on each precast beam is provided with a plurality of lightening holes, and the lightening holes are symmetrically arranged on two sides of the transverse center line of the precast beam.
7. The steel-concrete composite bridge suitable for use in marine environments of claim 2, wherein: the two side planes of each tenon are parallel to the longitudinal direction of the precast beam, the two side planes of each tenon are of triangular structures, the bottom edge of each triangular tenon is positioned at the bottom of the bridge deck, one side edge of each triangular tenon inclines outwards of the bridge deck, and the other side edge of each triangular tenon inclines inwards of the bridge deck.
8. The steel-concrete composite bridge suitable for marine environments of claim 1, wherein: the top surface of the spandrel girder is provided with a damping rubber pad, and the bottoms of the two ends of each precast girder are supported on the damping rubber pads on the spandrel girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311162662.4A CN117051677A (en) | 2023-09-11 | 2023-09-11 | Steel-concrete combined temporary bridge suitable for marine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311162662.4A CN117051677A (en) | 2023-09-11 | 2023-09-11 | Steel-concrete combined temporary bridge suitable for marine environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117051677A true CN117051677A (en) | 2023-11-14 |
Family
ID=88653640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311162662.4A Pending CN117051677A (en) | 2023-09-11 | 2023-09-11 | Steel-concrete combined temporary bridge suitable for marine environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117051677A (en) |
-
2023
- 2023-09-11 CN CN202311162662.4A patent/CN117051677A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108978434B (en) | Bracket-free industrialized construction method of steel-concrete combined continuous box girder bridge | |
| CN102691257A (en) | Continuous box girder made of corrugated steel web pre-tensioned prestressed concrete and construction method | |
| CN101550674A (en) | Bridge of steel truss-concrete and construction method thereof | |
| CN111962372A (en) | Road-rail combined construction steel web member double-combination continuous truss girder and construction method thereof | |
| CN108999088A (en) | A kind of construction method of cable-stayed bridge | |
| CN112458877A (en) | Assembled steel-concrete combined rigid frame bridge and construction method thereof | |
| CN110056128B (en) | Light assembled stiffening box groove type FRP (fiber reinforce Plastic) section sea sand concrete beam | |
| CN109881587B (en) | Integral installation method of main tower upper cross beam support in strong wind environment | |
| CN111305066A (en) | Hybrid combination beam steel-concrete combination section and mounting method thereof | |
| CN111472258A (en) | Large-span suspension bridge GFRP rib precast slab combined beam bridge deck system and construction method thereof | |
| CN202610696U (en) | Corrugated steel web pre-tensioning pre-stressed concrete continuous box beam | |
| CN108612122B (en) | Ultra-large plane-size open caisson foundation structure and construction method thereof | |
| CN214459548U (en) | Assembled steel and concrete combined rigid frame bridge | |
| US20240271375A1 (en) | Composite rcc deck and prestressed parabolic bottom chord underslung open web steel girder bridge superstructure | |
| CN212426749U (en) | Hybrid reinforced concrete joint section | |
| CN202390760U (en) | Steel-wood composite bridge structure provided with perforated steel board connecting pieces | |
| CN116716809A (en) | Construction method of light large-span cast-in-situ bracket of V-shaped pier lower beam of cable-stayed bridge | |
| CN110373990A (en) | The double-deck whole hole of Combined steel truss beam manufactures and erection construction method | |
| CN216586129U (en) | Prefabricated assembled steel and concrete composite beam adopting contact surface of reinforcing beam | |
| CN117051677A (en) | Steel-concrete combined temporary bridge suitable for marine environment | |
| CN202610695U (en) | Corrugated steel web type pre-tensioned prestressed concrete I-type beam | |
| CN212335738U (en) | Double-combination continuous truss girder of combined steel web member for highway and railway construction | |
| CN211689843U (en) | Structure for reducing deflection of steel-concrete combined multi-box simply-supported beam bridge | |
| CN212688701U (en) | Fulcrum connection structure in steel-concrete combined continuous beam | |
| CN209144634U (en) | A kind of steel construction Simple bridge having compared with high bearing capacity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |