CN111074747A - Cable support bridge that erects fast - Google Patents
Cable support bridge that erects fast Download PDFInfo
- Publication number
- CN111074747A CN111074747A CN201911294625.2A CN201911294625A CN111074747A CN 111074747 A CN111074747 A CN 111074747A CN 201911294625 A CN201911294625 A CN 201911294625A CN 111074747 A CN111074747 A CN 111074747A
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- bridge
- cable
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- transverse
- plates
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
Abstract
The invention discloses a cable support bridge capable of being erected quickly, which comprises a main cable, a cross beam, an end fixing device and a bridge deck bearing plate, wherein the main cable is fixedly connected with the cross beam; the two main cables are parallel to each other and are respectively fixedly connected with external anchor blocks positioned on two sides of a river bank, so that the main cables have certain initial tension force; the cross beams are arranged at intervals along the length direction of the main cables, and meanwhile, two ends of each cross beam are fixedly connected with the main cables on two sides through end fixing devices respectively; the bridge deck bearing plate is arranged on the cross beam to form a bridge deck; the bridge-forming rear suspension ratio is not more than 1/40. The invention can be quickly erected.
Description
Technical Field
The invention relates to the technical field of suspension bridges, in particular to a cable support bridge capable of being erected quickly.
Background
A suspension bridge refers to a bridge with cables suspended by pylons and anchored to both banks (or ends of the bridge) as the main load bearing members of the superstructure. The cable tower is composed of a suspension cable, a cable tower, an anchorage, a suspender, a bridge deck system and the like. The main bearing member of the suspension bridge is a suspension cable which mainly bears tension and is generally made of steel (steel wires, steel cables and the like) with high tensile strength. The traditional cableway bridge cable adopts the arrangement mode of close-spaced distribution, and the erection process is complicated, when meeting critical conditions such as emergency rescue, wartime and the like, the bridge needs to be erected quickly. Therefore, it is necessary to design a lightweight bridge which is convenient for rapid erection.
Disclosure of Invention
In view of this, the invention provides a cable support bridge capable of being erected quickly.
The technical scheme adopted by the invention is as follows:
a cable support bridge capable of being erected quickly comprises a main cable, a cross beam, an end fixing device and a bridge deck bearing plate;
the two main cables are parallel to each other and are respectively fixedly connected with external anchor blocks positioned on two sides of a river bank, so that the main cables have certain initial tension force; the cross beams are arranged at intervals along the length direction of the main cables, and meanwhile, two ends of each cross beam are fixedly connected with the main cables on two sides through end fixing devices respectively; the bridge deck bearing plate is arranged on the cross beam to form a bridge deck; the bridge-forming rear suspension ratio is not more than 1/40.
Furthermore, the end fixing device comprises an inverted U-shaped component and two groups of clamping assemblies;
the opening of the inverted U-shaped component is used for accommodating a main cable, the closed end is provided with extending arms extending to two sides along the length direction of the main cable, and the total length of the extending arms at the two sides is equal to the spacing distance of the cross beam;
the clamping assembly comprises two clamping blocks and a fastener, and the clamping surfaces of the clamping blocks are arc surfaces; the two clamping blocks are respectively arranged on two sides of the main cable and fixedly connected through a fastening piece;
the inverted U-shaped component is fixed at the end part of the cross beam and is hung on the main cable, and the two groups of clamping assemblies are positioned on two sides of the inverted U-shaped component and are used for limiting the displacement of the inverted U-shaped component along the length direction of the main cable; the extending arms of the adjacent inverted U-shaped parts are locked by fasteners.
Further, the bridge deck bearing plate comprises a rib plate and a partition plate;
the rib plates are of rectangular flat plate structures, a plurality of rib plates are arranged at equal intervals, adjacent rib plates are fixedly connected through a plurality of partition plates, and the partition plates are arranged at equal intervals along the length direction of the rib plates; the space between the rib plates is 53 mm-59 mm, the space between the partition plates is 97 mm-100 mm, and a longitudinal and transverse orthogonal beam lattice system is formed.
Furthermore, the bottom surface of the rib plate is provided with a groove for clamping with the top end of the cross beam; the beam top is equipped with a plurality of horizontal draw-in grooves that are used for restricting bridge floor loading board lateral displacement, and the horizontal length of horizontal draw-in groove is equal to the width of singleness bridge floor loading board to through the buckle with bridge floor loading board clamping between buckle and crossbeam.
Furthermore, the transverse clamping grooves are extension rods arranged at intervals, and the transverse distance between the extension rods is the transverse length of the transverse clamping grooves; the buckle plate is buckled on the top surface of the edge rib of the bridge deck bearing plate and is fixed at the top of the extension rod through a screw.
Further, the cable-supported bridge further comprises a counterweight, the counterweight is of a cuboid structure, and the height-width ratio of the whole structure is not more than 1/3; the counter weight passes through cardboard subassembly block on the bridge floor loading board.
Further, the counterweight is comprised of a plurality of counterweight modules.
Further, the clamping plate assembly comprises an upper clamping plate, a lower clamping plate and a vertical screw rod;
the bottom surface of the upper clamping plate is provided with a limiting groove for limiting the transverse displacement of the balance weight; the two lower clamping plates are symmetrically arranged on the two transverse sides of the balance weight, the lower clamping plates are in an inverted T shape, the vertical parts are in threaded connection with the vertical screws, the two ends of the horizontal parts are provided with clamping grooves for limiting the transverse displacement of the ribbed plates, and the transverse distance between the two clamping grooves is equal to the transverse interval between the adjacent ribbed plates; the two vertical screws are respectively in threaded connection with the two lower clamping plates; vertical screw rod one end and last cardboard threaded connection, the other end and the vertical part threaded connection of cardboard down, with the counter weight spacing between last cardboard and bridge floor loading board.
Furthermore, the crossbeam is the aluminum alloy case roof beam to set up the stiffening rib board at a certain distance apart.
Has the advantages that:
1. based on the strong tension capacity of the cable, the arrangement mode of dense-space cable distribution of the traditional cableway bridge is abandoned, and the two main cables arranged on the side of the bridge deck are used as main bearing components, so that the initial tension of the main cables is properly improved, and the structural system is clear in stress, low in gravity center and good in transverse stability. Under the main cable molding state, possesses the quick erection ability.
2. The end fixing device can realize reliable connection with the main cable and realize locking and positioning functions; secondly, the total length of the arms at two sides of the inverted U-shaped component is equal to the spacing distance of the cross beam, and the cross beam can play the role of a caliper when being installed in place; moreover, the extending arms of the adjacent inverted U-shaped components are locked through fasteners, and the abutting and fastening of the adjacent cross beams can be realized.
3. The bridge deck bearing plate is a beam lattice system which is orthogonal vertically and horizontally, so that the self weight is further reduced under the conditions of strength and rigidity, and the light weight is realized; secondly, the tire that drives on it provides better "grip" when satisfying the wheel load and press partially, prevents to skid.
4. The bottom surface of the rib plate is provided with the groove which is used for being clamped with the top end of the cross beam, so that the longitudinal relative sliding of the bridge deck bearing plate and the cross beam can be prevented, and meanwhile, the transverse clamping groove arranged on the cross beam can prevent the transverse relative sliding of the bridge deck bearing plate and the cross beam; in addition, the bridge deck bearing plate is clamped between the pinch plate and the cross beam through the pinch plate, so that the bridge deck bearing plate and the cross beam can be prevented from being vertically separated.
5. The counterweight can control the loading of the main cable, particularly the line shape when a heavy vehicle passes through, adopts a modular design, is easy to carry and arrange, and can realize quick arrangement; moreover, the height-width ratio of the integral structure of the counterweight is not more than 1/3, so that the center of gravity is as lower as possible, and the stability is improved.
6. The clamping plate assembly is simple in structure, is matched with a beam lattice system structure of the bridge deck bearing plate, and is simple and convenient to operate when the balance weight is tightly installed.
7. The cross beam is an aluminum alloy box beam, and the stiffening rib plates are arranged, so that the self weight is further reduced, and necessary structural rigidity and strength can be provided.
Drawings
FIG. 1 is a three-dimensional schematic view of a main cable and cross-beam of the present invention;
FIG. 2 is a longitudinal schematic view of a beam of the present invention;
FIG. 3 is a schematic plan view of a main cable and cross member of the present invention;
FIG. 4 is a cross-sectional schematic view of a beam of the present invention;
FIG. 5 is a schematic cross-sectional side view of the end fixture of the present invention;
FIG. 6 is a schematic view of the longitudinal arrangement of the end fixture of the present invention;
FIG. 7 is a schematic plan view of a deck carrier of the present invention;
FIG. 8 is a schematic view of the cross-sectional arrangement of the deck bearing plate of the present invention;
FIG. 9 is a schematic view of the arrangement of the longitudinal section of the deck bearing plate according to the present invention;
FIG. 10 is a schematic view of the transverse arrangement of the counterweight of the present invention;
FIG. 11 is a front view of the inverted U-shaped member of the present invention;
FIG. 12 is a front view of the clamp block of the present invention;
the device comprises a main cable 1, a cross beam 2, an end fixing device 3, an inverted U-shaped part 4, a clamping block 5, a fastener 6, a bridge deck bearing plate 7, a partition plate 8, a rib plate 9, a buckle plate 10, a groove 11, an extension rod 12, a counterweight 13, an upper clamping plate 14, a lower clamping plate 15, a vertical screw rod 16, an extension arm 17 and a bolt 18.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The embodiment provides a cable support bridge that erects fast, including main push-towing rope 1, crossbeam 2, tip fixing device 3, bridge floor loading board 7 and counter weight 13. The longitudinal direction of the main cable 1 is used as the longitudinal direction.
Based on the strong tension capability of the main cable 1, as shown in fig. 1 and 2, the main cable 1 is used as a main load-bearing member. The two main cables 1 are parallel to each other and fixedly connected with external anchor seats positioned on two sides of a river bank through cable saddle anchors, and the anchor seats provide anchoring resistance for the main cables through prestressed anchor cables planted on rock strata, so that the main cables 1 have certain initial tension. The cross beams 2 are arranged at intervals along the length direction of the main cables 1, and meanwhile, two ends of each cross beam 2 are fixedly connected with the main cables 1 on two sides through end fixing devices 3 respectively; the bridge deck bearing plate 7 is arranged on the cross beam 2 to form a bridge deck; the bridge-forming rear suspension ratio is not more than 1/40. The counter weight 13 is fixed at the horizontal both ends of bridge floor loading board 7 through the cardboard subassembly.
As shown in figure 4, the cross beam 2 adopts 6061AL high-strength alloy aluminum and has a thin-wall box-shaped section. And a stiffening rib plate is arranged between the top plate and the bottom plate of the box girder, and the spacing between the stiffening rib plates is 400 mm.
As shown in fig. 3 and 5, the end fixing device 3 includes an inverted U-shaped member 4 and two sets of clamping assemblies; as shown in fig. 11, the opening of the inverted U-shaped member 4 is used for accommodating the main cable 1, the closed end is provided with extending arms 17 extending to both sides, the extending direction is along the length direction of the main cable 1, and the total length of the extending arms 17 at both sides is equal to the spacing distance of the cross beam 2, so that when the cross beam 2 is installed in place, the function of a caliper can be exerted; the clamping assembly comprises two clamping blocks 5 and a bolt assembly 18, the clamping surfaces of the clamping blocks 5 are arc-shaped surfaces and are matched with the appearance of the main cable 1, as shown in fig. 12, the two clamping blocks 5 are respectively arranged on two sides of the main cable 1, and the bolt assembly 18 penetrates through the two clamping blocks 5 to lock the main cable 1. The inverted U-shaped component 4 is fixed at the end part of the cross beam 2 and is hung on the main cable 1, and the two groups of clamping components are positioned at two sides of the inverted U-shaped component 4 and are used for limiting the longitudinal relative displacement of the inverted U-shaped component 4, namely the cross beam 2 and the main cable 1; the extending arms 17 of the adjacent inverted U-shaped components 4 are connected together through the fastener 6, as shown in fig. 6, the fastener 6 includes an ear plate and two bolts, and two ends of the ear plate are fixedly connected with the two adjacent extending arms 17 through the bolts to lock the adjacent inverted U-shaped components 4.
As shown in fig. 7 and 8, the deck bearing plate 7 includes ribs 9 and partition plates 8; the rib plates 9 are of rectangular flat plate structures, the rib plates 9 are arranged at equal intervals, the adjacent rib plates 9 are fixedly connected through the partition plates 8, the partition plates 8 are arranged at equal intervals along the length direction of the rib plates 9, the intervals between the rib plates 9 are 53 mm-59 mm, and the intervals between the partition plates 8 are 97 mm-100 mm, so that a beam lattice system with orthogonal longitudinal and transverse directions is formed.
As shown in fig. 9, the bottom surface of the rib plate 9 is provided with a groove 11 for being clamped with the top end of the beam 2; the top of the crossbeam 2 is provided with a plurality of transverse clamping grooves used for limiting the transverse displacement of the bridge deck bearing plate 7, the transverse length of each transverse clamping groove is equal to the width of the single bridge deck bearing plate 7, and the bridge deck bearing plate 7 is clamped between the pinch plate 10 and the crossbeam 2 through the pinch plate 10. The transverse clamping grooves are extension rods 12 which are arranged at intervals, and the transverse distance between the extension rods 12 is the transverse length of the transverse clamping grooves; the pinch plate 10 is fastened on the top surface of the side rib of the bridge floor bearing plate 7 and is fixed on the top of the extension rod 12 through a screw, so that the bridge floor bearing plate 7 and the cross beam 2 are prevented from being vertically hollow.
As shown in fig. 10, the counterweight 13 has a rectangular parallelepiped structure, and the height-to-width ratio of the entire structure is not greater than 1/3. The counterweight 13 is composed of a plurality of counterweight blocks, more than one counterweight block can be adopted according to the requirement, and the counterweight blocks are cast iron blocks. This embodiment sets up three balancing weights in the symmetrical every side of bridge floor, and six balancing weights are counted in the horizontal total, arrange in on the bridge floor loading board 7 in the outside.
The card assembly comprises an upper card 14, a lower card 15 and a vertical screw 16. The bottom surface of the upper clamping plate 14 is provided with a limiting groove for limiting the transverse displacement of the counterweight 13; the two lower clamping plates 15 are symmetrically arranged on the two transverse sides of the counterweight 13, the lower clamping plates 15 are inverted T-shaped, the vertical parts are in threaded connection with the vertical screws 16, the two ends of the horizontal parts are provided with clamping grooves for limiting the transverse displacement of the ribbed plates 9, and the transverse distance between the two clamping grooves is equal to the transverse distance between the adjacent ribbed plates 9; two vertical screws 16 are adopted and are respectively in threaded connection with the two lower clamping plates 15; one end of the vertical screw 16 is in threaded connection with the upper clamping plate 14, the other end of the vertical screw is in threaded connection with the vertical part of the lower clamping plate 15, and the balance weight 13 is limited between the upper clamping plate 14 and the bridge deck bearing plate 7.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A cable support bridge capable of being erected quickly is characterized by comprising a main cable, a cross beam, an end fixing device and a bridge deck bearing plate;
the two main cables are parallel to each other and are respectively fixedly connected with external anchor blocks positioned on two sides of a river bank, so that the main cables have certain initial tension force; the cross beams are arranged at intervals along the length direction of the main cables, and meanwhile, two ends of each cross beam are fixedly connected with the main cables on two sides through end fixing devices respectively; the bridge deck bearing plate is arranged on the cross beam to form a bridge deck; the bridge-forming rear suspension ratio is not more than 1/40.
2. The quick-install cable-supported bridge of claim 1, wherein said end fixture comprises an inverted U-shaped member and two sets of clamping assemblies;
the opening of the inverted U-shaped component is used for accommodating a main cable, the closed end is provided with extending arms extending to two sides along the length direction of the main cable, and the total length of the extending arms at the two sides is equal to the spacing distance of the cross beam;
the clamping assembly comprises two clamping blocks and a fastener, and the clamping surfaces of the clamping blocks are arc surfaces; the two clamping blocks are respectively arranged on two sides of the main cable and fixedly connected through a fastening piece;
the inverted U-shaped component is fixed at the end part of the cross beam and is hung on the main cable, and the two groups of clamping assemblies are positioned on two sides of the inverted U-shaped component and are used for limiting the displacement of the inverted U-shaped component along the length direction of the main cable; the extending arms of the adjacent inverted U-shaped parts are locked by fasteners.
3. The fast-erecting cable-supported bridge of claim 1, wherein said deck carrier includes ribs and baffles;
the rib plates are of rectangular flat plate structures, a plurality of rib plates are arranged at equal intervals, adjacent rib plates are fixedly connected through a plurality of partition plates, and the partition plates are arranged at equal intervals along the length direction of the rib plates; the space between the rib plates is 53 mm-59 mm, the space between the partition plates is 97 mm-100 mm, and a longitudinal and transverse orthogonal beam lattice system is formed.
4. The fast-erecting cable-supported bridge according to claim 3, wherein said rib has a groove on a bottom surface thereof for engaging with a top end of said beam; the beam top is equipped with a plurality of horizontal draw-in grooves that are used for restricting bridge floor loading board lateral displacement, and the horizontal length of horizontal draw-in groove is equal to the width of singleness bridge floor loading board to through the buckle with bridge floor loading board clamping between buckle and crossbeam.
5. The quick-set cable-supported bridge of claim 4, wherein said transverse slots are spaced apart projecting bars, the transverse spacing between the projecting bars being the transverse length of the transverse slots; the buckle plate is buckled on the top surface of the edge rib of the bridge deck bearing plate and is fixed at the top of the extension rod through a screw.
6. The fast-erecting cable-supported bridge of claim 3, further comprising a counterweight having a rectangular parallelepiped configuration, wherein the overall configuration has a height to width ratio of no greater than 1/3; the counter weight passes through cardboard subassembly block on the bridge floor loading board.
7. The fast-erecting cable-supported bridge of claim 6, wherein said counterweight is comprised of a plurality of counterweight modules.
8. The quick-set cable-supported bridge of claim 6, wherein said clamp assembly comprises an upper clamp, a lower clamp and a vertical screw;
the bottom surface of the upper clamping plate is provided with a limiting groove for limiting the transverse displacement of the balance weight; the two lower clamping plates are symmetrically arranged on the two transverse sides of the balance weight, the lower clamping plates are in an inverted T shape, the vertical parts are in threaded connection with the vertical screws, the two ends of the horizontal parts are provided with clamping grooves for limiting the transverse displacement of the ribbed plates, and the transverse distance between the two clamping grooves is equal to the transverse interval between the adjacent ribbed plates; the two vertical screws are respectively in threaded connection with the two lower clamping plates; vertical screw rod one end and last cardboard threaded connection, the other end and the vertical part threaded connection of cardboard down, with the counter weight spacing between last cardboard and bridge floor loading board.
9. The fast-erecting cable-supported bridge according to claim 1, wherein said cross beams are aluminum alloy box beams and are provided with stiffening ribs at a distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911294625.2A CN111074747A (en) | 2019-12-16 | 2019-12-16 | Cable support bridge that erects fast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911294625.2A CN111074747A (en) | 2019-12-16 | 2019-12-16 | Cable support bridge that erects fast |
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| CN111074747A true CN111074747A (en) | 2020-04-28 |
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| CN201911294625.2A Pending CN111074747A (en) | 2019-12-16 | 2019-12-16 | Cable support bridge that erects fast |
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Application publication date: 20200428 |