CN212742159U - Partial cable-stayed bridge of steel truss web type concrete composite beam - Google Patents
Partial cable-stayed bridge of steel truss web type concrete composite beam Download PDFInfo
- Publication number
- CN212742159U CN212742159U CN202021344465.6U CN202021344465U CN212742159U CN 212742159 U CN212742159 U CN 212742159U CN 202021344465 U CN202021344465 U CN 202021344465U CN 212742159 U CN212742159 U CN 212742159U
- Authority
- CN
- China
- Prior art keywords
- steel
- concrete
- steel truss
- web
- cable
- 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.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 109
- 239000010959 steel Substances 0.000 title claims abstract description 109
- 239000004567 concrete Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000007596 consolidation process Methods 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000004873 anchoring Methods 0.000 claims description 16
- 230000003187 abdominal effect Effects 0.000 claims 3
- 239000011230 binding agent Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Landscapes
- Bridges Or Land Bridges (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The utility model discloses a partial cable-stay bridge of steel truss web-type concrete composite beam, including the girder, the girder includes tower beam consolidation area, beam-ends district, steel truss binder, tower beam consolidation area department is provided with main tower, be provided with the suspension cable between main tower, the girder, girder steel truss binder includes concrete roof and concrete bottom plate, be provided with between concrete roof, the concrete bottom plate and connect the two steel truss web. The utility model adopts the steel truss web as a force transmission component and a support, and converts the internal force born by the concrete web into the internal force of the truss chord member and the web member; and set up the crossbeam in suspension cable and upper chord theoretical intersection point department, set up the prestressing steel bundle that slowly bonds in crossbeam and top, bottom plate, strengthened the horizontal effect of girder, reduced the whole thick board, alleviate the roof beam heavy, the utility model has the advantages of girder dead weight is light, the leap-over ability is big, anti-seismic performance is good, anti-wind ability reinforce, the structure is simple and clear, the construction is convenient.
Description
Technical Field
The utility model belongs to bridge crossing system field, concretely relates to steel purlin web-type concrete composite beam's part cable-stay bridge.
Background
The concrete partial cable-stayed bridge is a common bridge structure, the bearing capacity of the structure is generally improved by arranging a bridge tower and a cable-stayed cable on a continuous beam or a rigid frame, a concrete main beam is a main stress component, the cable-stayed cable is an auxiliary stress component, and the effective tower height is generally 1/8-1/12 of a main span. The bridge type main beam has large self weight, when the main span is large and is positioned in a high-intensity seismic area, the seismic response is large, an ultra-large-tonnage shock absorption and isolation support is required to be arranged, the scale of structures of lower parts such as piers, foundations and the like is large, and the economy is unreasonable. Meanwhile, the transverse prestress of the concrete girder generally adopts conventional steel strands, the prestressed duct needs to be grouted and sealed after tensioning, and the grouting quality control difficulty is high when the concrete girder is located in a cold region.
Disclosure of Invention
The utility model discloses a solve the problem that prior art exists and propose, its purpose provides the partial cable-stay bridge of a steel purlin web-type concrete composite beam.
The technical scheme of the utility model is that: the utility model provides a partial cable-stay bridge of steel truss web-like concrete composite beam, includes the girder, the girder includes tower beam consolidation area, beam-ends area, steel truss binder, tower beam consolidation area department is provided with main tower, be provided with the suspension cable between main tower, the girder, girder steel truss binder includes concrete roof and concrete bottom plate, be provided with the steel truss web of connecting the two between concrete roof, the concrete bottom plate.
Furthermore, the steel truss web is a steel truss, and the steel truss web is combined with the concrete top plate and the concrete bottom plate through a steel-concrete combination structure.
Furthermore, an anchor ear plate is arranged on the main beam, and the stay cable is connected with the anchor ear plate through a steel anchor box.
Furthermore, the steel truss web comprises an upper chord positioned above and a lower chord positioned below, and a web member for force transmission is arranged between the upper chord and the lower chord.
Furthermore, the upper chord adopts a + -shaped rod piece, two steel plates and a horizontal plate at the upper end of the upper chord form an anchoring part, and the anchoring part is inserted into the concrete roof and anchored through a combination structure.
Furthermore, the lower chord adopts a + -shaped rod piece, two steel plates at the lower end of the lower chord and the horizontal plate form an anchoring part, and the anchoring part is inserted into the concrete bottom plate and is anchored through a combination structure.
Furthermore, the two steel plates at the upper end of the upper chord extend upwards at the suspension point of the stay cable, the extension steel plate penetrates through the concrete top plate, and the part of the extension steel plate extending out of the concrete top plate is used as an anchor ear plate and is connected with the stay cable through a steel anchor box.
Furthermore, the upper end two-limb steel plate is vertical to the upper surface of the concrete top plate.
Furthermore, PBL key holes are arranged on the upper two-limb steel plate, and PBL key steel bars pass through the holes.
The utility model adopts the steel truss web as the force transmission component and support between the concrete top plate and the concrete bottom plate, and converts the internal force born by the concrete web into the internal force of the truss chord member and the web member; the cross beam is arranged at the theoretical intersection point of the stay cable and the upper chord, and the slow-bonding prestressed steel bundles are arranged in the cross beam, the top plate and the bottom plate, so that the transverse action of the main beam is enhanced, the thickness of the whole plate is reduced, the weight of the beam is lightened, and the quality control problem caused by the conventional prestressed duct grouting in cold areas is avoided; meanwhile, the overall rigidity of the structure is improved by properly increasing the tower height on the basis of the traditional partial cable-stayed bridge. The utility model has the advantages of light weight of the girder, large spanning capability, good anti-seismic performance, strong wind resistance, simple structure, convenient construction and the like.
The utility model discloses widened the earthquake operating mode suitability of traditional concrete part cable-stay bridge, had wider application prospect in the large-span bridge in high intensity seismic region.
Drawings
Fig. 1 is a schematic elevation structure of the present invention;
FIG. 2 is a schematic view of a single steel truss web vertical structure in the present invention;
FIG. 3 is an enlarged view of the upper chord and the lower chord of the present invention;
FIG. 4 is a schematic view of the side layout of the connection between the stay cable and the upper chord of the present invention;
FIG. 5 is a schematic structural view of a fixing area of a middle tower beam;
fig. 6 is a schematic structural view of the middle beam end region of the present invention;
wherein:
1 concrete roof 2 steel truss web
3 concrete bottom plate 4 main tower
5 stay cable 6 tower beam consolidation area
7 8 steel reinforced concrete combined structure in beam end area
9 anchor ear plate 10 steel anchor box
2-1 upper chord 2-2 web member
2-3 lower chord.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples:
as shown in fig. 1-6, a partial cable-stayed bridge of steel truss web type concrete composite beam, includes the girder, the girder includes tower beam consolidation area 6, beam-ends district 7, steel truss web district, 6 departments of tower beam consolidation area are provided with main tower 4, be provided with suspension cable 5 between main tower 4, the girder includes concrete roof 1 and concrete bottom plate 3, be provided with the steel truss web 2 of connecting the two between concrete roof 1, the concrete bottom plate 3.
The steel truss web 2 is a steel truss, and the steel truss web 2 is fixed with the concrete top plate 1 and the concrete bottom plate 3 through a steel-concrete combination structure 8.
The main beam is provided with an anchor ear plate 9, and the stay cable 5 is connected with the anchor ear plate 9 through a steel anchor box 10.
The steel truss web 2 comprises an upper chord 2-1 positioned above and a lower chord 2-3 positioned below, and a web member 2-2 for connecting and transferring force is arranged between the upper chord 2-1 and the lower chord 2-3.
The upper chord 2-1 adopts a "+ -" -shaped rod piece, two steel plates and a horizontal plate at the upper end of the "+ -" -shaped rod piece form an anchoring part, and the anchoring part is inserted into the concrete top plate 1 and is anchored through a combination structure 8.
The lower chord 2-3 adopts a "+ -" -shaped rod piece, two steel plates at the lower end of the rod piece and a horizontal plate form an anchoring part, and the anchoring part is inserted into the concrete bottom plate 3 and is anchored through a combination structure 8.
Two steel plates at the upper end of the upper chord 2-1 are vertical to the upper surface of the concrete top plate 1.
PBL key holes are arranged on the two steel plates at the upper end of the upper chord 2-1, and PBL key steel bars pass through the holes.
PBL key open holes are arranged on two steel plates at the lower end of the lower chord 2-3, and PBL key steel bars pass through the open holes.
Preferably, the joint of the steel truss web upper chord 2-1 and the concrete top plate 1 and the joint of the lower chord 2-3 and the concrete bottom plate 3 are dual shear keys consisting of PBL keys and cylindrical stud welding nails, the PBL keys are arranged on the vertical plates of the joint chord, and the cylindrical stud welding nails are arranged on the horizontal plates of the joint chord.
A trapezoidal section cross beam is arranged at the theoretical intersection point of the stay cable 5 and the upper chord 2-3 of the top plate 1, and a slow-bonding prestressed steel strand is arranged in the cross beam to strengthen the transverse stress at the hoisting point of the bridge deck.
And the top plate 1 and the bottom plate 3 are internally and transversely provided with slow-bonding prestressed steel strands so as to strengthen the transverse stress of the bridge deck.
The upper chord 2-1 is in a straight line form, the lower chord 2-3 is partially in a straight line form, and the other part is in a curved line form.
Yet another embodiment
The utility model provides a partial cable-stay bridge of steel purlin web-type concrete composite beam, includes the girder, the girder includes tower beam consolidation area 6, beam-ends district 7, steel purlin web district, 6 departments of tower beam consolidation area are provided with main tower 4, be provided with suspension cable 5 between main tower 4, the girder includes concrete roof 1 and concrete bottom plate 3, be provided with between concrete roof 1, the concrete bottom plate 3 and connect the two steel purlin web 2.
The steel truss web 2 is a steel truss, and the steel truss web 2 is fixed with the concrete top plate 1 and the concrete bottom plate 3 through a steel-concrete combination structure 8.
The main beam is provided with an anchor ear plate 9, and the stay cable 5 is connected with the anchor ear plate 9 through a steel anchor box 10.
The steel truss web 2 comprises an upper chord 2-1 positioned above and a lower chord 2-3 positioned below, and a web member 2-2 for connecting and transferring force is arranged between the upper chord 2-1 and the lower chord 2-3.
The upper chord 2-1 adopts a "+ -" -shaped rod piece, two steel plates and a horizontal plate at the upper end of the "+ -" -shaped rod piece form an anchoring part, and the anchoring part is inserted into the concrete top plate 1 and is anchored through a combination structure 8.
The lower chord 2-3 adopts a "+ -" -shaped rod piece, two steel plates at the lower end of the rod piece and a horizontal plate form an anchoring part, and the anchoring part is inserted into the concrete bottom plate 3 and is anchored through a combination structure 8.
Preferably, two steel plates at two upper ends of the upper chords 2-1 extend upwards at the inclined pulling points, the upwards extending steel plates penetrate through the concrete top plate 1, and the parts of the upwards extending steel plates, which extend out of the concrete top plate 1, are used as anchor pulling lug plates 9 and connected with the inclined pulling cables 5 through steel anchor boxes 10.
Two steel plates at the upper end of the upper chord 2-1 are vertical to the upper surface of the concrete top plate 1.
PBL key holes are arranged on the two steel plates at the upper end of the upper chord 2-1, and PBL key steel bars pass through the holes.
PBL key open holes are arranged on two steel plates at the lower end of the lower chord 2-3, and PBL key steel bars pass through the open holes.
Preferably, the joint of the steel truss web upper chord 2-1 and the concrete top plate 1 and the joint of the lower chord 2-3 and the concrete bottom plate 3 are dual shear keys consisting of PBL keys and cylindrical stud welding nails, the PBL keys are arranged on the vertical plates of the joint chord, and the cylindrical stud welding nails are arranged on the horizontal plates of the joint chord.
A trapezoidal section cross beam is arranged at the theoretical intersection point of the stay cable 5 and the upper chord 2-3 of the top plate 1, and a slow-bonding prestressed steel strand is arranged in the cross beam to strengthen the transverse stress at the hoisting point of the bridge deck.
And the top plate 1 and the bottom plate 3 are internally and transversely provided with slow-bonding prestressed steel strands so as to strengthen the transverse stress of the bridge deck.
The lower chord 2-3 is in a straight-curve-replacing form.
The truss height of the steel truss web 2 is determined according to the structural stress requirement. The number of main girders and girder pieces adopted by the steel girder web 2 is not limited to that shown in the attached drawings.
The beam-type system can adopt a continuous beam system or a rigid frame system as required.
The main beam comprises a tower beam fixing area 6 and a beam end area 7. The upper chord 2-1 and the lower chord 2-3 are combined with a tower beam fixing area 6 and a beam end area 7 in an embedded mode.
The facing surfaces of the concrete top plate 1 and the concrete bottom plate 3 are correspondingly provided with convex parts, and the steel-concrete combined structure 8 is arranged in the convex parts.
The cross-sectional shape of the convex part is trapezoidal.
The main tower 4 is fixedly connected with the main beam, the effective tower height of the main tower 4 is 1/6-1/8 of the main span, the lifting effect of the inhaul cable is favorably exerted, and the beam height is reduced.
A construction method of a partial cable-stayed bridge of a steel truss web type concrete composite beam comprises the following steps: the method comprises the following steps:
i. assembling steel truss web sections
II, hanging a stay cable between the main tower and the main beam and completing primary tension
Iii, using the steel truss web segment as a supporting and pouring concrete top plate of a cast-in-place platform
Iv, using the web segment of the steel truss as the support pouring concrete bottom plate of the cast-in-place platform
V. curing concrete top plate and concrete bottom plate
Vi, stretching the horizontal slow-bonding prestressed steel bundle
And vii, performing construction of the next section.
The utility model discloses a steel purlin web turns into the internal force of chord member, web member with its internal force who bears as the connection between concrete roof, the concrete bottom plate. And improve the lifting action of cable to the girder through increasing the tower height, the utility model has the advantages of the girder dead weight is light, the leap-over ability is big, anti-seismic performance is good, anti-wind ability reinforce.
The utility model discloses widened the earthquake operating mode suitability of traditional concrete part cable-stay bridge, had wider application prospect in the large-span bridge in high intensity seismic region.
Claims (9)
1. The utility model provides a steel purlin web-type concrete composite beam's part cable-stay bridge, includes the girder, its characterized in that: the girder includes tower roof beam consolidation area (6), beam end area (7), steel truss abdominal region, tower roof beam consolidation area (6) department is provided with main tower (4), be provided with between main tower (4), the girder suspension cable (5), girder steel truss abdominal region includes concrete roof (1) and concrete bottom plate (3), be provided with between concrete roof (1), concrete bottom plate (3) and connect the two steel truss abdominal (2).
2. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 1, wherein: the steel truss web (2) is a steel truss, and the steel truss web (2) is combined with the concrete top plate (1) and the concrete bottom plate (3) through a steel-concrete combination structure (8).
3. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 2, wherein: the main beam is provided with an anchor pulling lug plate (9), and the stay cable (5) is connected with the anchor pulling lug plate (9) through a steel anchor box (10).
4. A partial cable-stayed bridge of the steel truss web type concrete composite beam as claimed in claim 3, wherein: the steel truss web (2) comprises an upper chord (2-1) positioned above and a lower chord (2-3) positioned below, and a web member (2-2) for force transmission is arranged between the upper chord (2-1) and the lower chord (2-3).
5. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 4, wherein: the upper chord member (2-1) adopts a + -shaped rod member, two steel plates and a horizontal plate at the upper end of the upper chord member form an anchoring part, and the anchoring part is inserted into the concrete roof plate (1) and is anchored through a combination structure (8).
6. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 5, wherein: the lower chord (2-3) adopts a + -shaped rod piece, two steel plates at the lower end of the lower chord and the horizontal plate form an anchoring part, and the anchoring part is inserted into the concrete bottom plate (3) and is anchored through a combination structure (8).
7. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 6, wherein: two steel plates at the upper end of the upper chord (2-1) extend upwards at the suspension point of the stay cable, the extension steel plate penetrates through the concrete top plate (1), and the part of the extension steel plate extending out of the concrete top plate (1) is used as an anchor ear plate (9) and is connected with the stay cable (5) through a steel anchor box (10).
8. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 5, wherein: the two steel plates at the upper end are vertical to the upper surface of the concrete top plate (1).
9. The partial cable-stayed bridge of the steel truss web-type concrete composite beam as claimed in claim 8, wherein: PBL key holes are arranged on the two steel plates at the upper end, and PBL key steel bars pass through the holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021344465.6U CN212742159U (en) | 2020-07-10 | 2020-07-10 | Partial cable-stayed bridge of steel truss web type concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021344465.6U CN212742159U (en) | 2020-07-10 | 2020-07-10 | Partial cable-stayed bridge of steel truss web type concrete composite beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212742159U true CN212742159U (en) | 2021-03-19 |
Family
ID=75021216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021344465.6U Active CN212742159U (en) | 2020-07-10 | 2020-07-10 | Partial cable-stayed bridge of steel truss web type concrete composite beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212742159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893861A (en) * | 2020-07-10 | 2020-11-06 | 中国铁路设计集团有限公司 | Partial cable-stayed bridge of steel truss web type concrete composite beam and construction method thereof |
-
2020
- 2020-07-10 CN CN202021344465.6U patent/CN212742159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893861A (en) * | 2020-07-10 | 2020-11-06 | 中国铁路设计集团有限公司 | Partial cable-stayed bridge of steel truss web type concrete composite beam and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106894326B (en) | The construction method of assembled pretensioned prestressing corrugated steel web plate composite box girder | |
| CN101644024B (en) | Prestress steel purlin-concrete combined continuous rigid frame bridge and construction method thereof | |
| CN102535327B (en) | Through prestress steel truss and concrete combined continuous steel structure bridge and construction method thereof | |
| CN110777643A (en) | A large-span steel truss composite continuous beam structure and its construction method | |
| CN102535328B (en) | In-pipe prestressed steel-pipe truss composite simply-supported beam structure | |
| CN207553438U (en) | Tension prestress concrete composite beam altogether | |
| CN213038218U (en) | Predictive continuous rigid frame bridge capable of supplementing tensioning prestress | |
| CN215593647U (en) | Beam-arch composite structure adopting steel truss-concrete prefabricated combined beam section | |
| CN212742159U (en) | Partial cable-stayed bridge of steel truss web type concrete composite beam | |
| CN114182620A (en) | Partial cable-stayed bridge structure system and construction method with large cantilever core steel box | |
| CN109629418A (en) | A kind of close stringer system segmentation prestressing force overlapping concrete slab and construction method | |
| CN212335738U (en) | Double-combination continuous truss girder of combined steel web member for highway and railway construction | |
| CN111893861A (en) | Partial cable-stayed bridge of steel truss web type concrete composite beam and construction method thereof | |
| CN206570674U (en) | Assembled pretensioned prestressing corrugated steel web plate composite box girder | |
| CN212925727U (en) | Cable-stayed bridge of steel truss stiffened concrete beam | |
| CN111764250B (en) | Cable-stayed bridge with steel truss web combined beam | |
| CN201381470Y (en) | Assembled variable cross-section composite continuous bridge | |
| CN215887894U (en) | Large-span steel truss web reinforced concrete composite beam bridge | |
| CN118147997A (en) | Arched cable-stayed prestressed concrete continuous rigid frame bridge | |
| CN216040610U (en) | Long-span top-supported cable-aided beam-arch composite rigid frame bridge | |
| CN212452238U (en) | Steel truss web combined beam cable-stayed bridge | |
| CN216515071U (en) | Continuous beam arch bridge of steel web-concrete combined box girder | |
| CN215857136U (en) | Partial cable-stayed bridge | |
| CN216893067U (en) | Assembled composite floor system | |
| CN114438871B (en) | Assembled composite structure bridge and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |