CN114016374A - Cliff steep wall hanging net type pedestrian suspension bridge of canyon river and construction method thereof - Google Patents
Cliff steep wall hanging net type pedestrian suspension bridge of canyon river and construction method thereof Download PDFInfo
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- CN114016374A CN114016374A CN202111545502.9A CN202111545502A CN114016374A CN 114016374 A CN114016374 A CN 114016374A CN 202111545502 A CN202111545502 A CN 202111545502A CN 114016374 A CN114016374 A CN 114016374A
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- 239000000725 suspension Substances 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000011435 rock Substances 0.000 claims abstract description 21
- 238000004873 anchoring Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000011150 reinforced concrete Substances 0.000 description 4
- 241000239290 Araneae Species 0.000 description 3
- 206010040925 Skin striae Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 241000345998 Calamus manan Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000012950 rattan cane Nutrition 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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
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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
- E01D19/00—Structural or constructional details of bridges
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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
- 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
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
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Abstract
The invention provides a cliff steep wall hanging net type pedestrian suspension bridge of a canyon river, which comprises a hyperbolic paraboloid space cable net system, a cliff steep wall anchoring foundation beam, rock anchor cables and a bridge deck system, wherein the hyperbolic paraboloid space cable net system is formed by spatially crossing a plurality of finished cables prefabricated by factories, the space geometry of the hyperbolic paraboloid space cable net system is a notch-shaped space cable net formed by a notch which is upwards drooped to the downward direction of the hyperbolic paraboloid space cable net, the hyperbolic paraboloid space cable net system is dispersedly anchored on the cliff steep wall anchoring foundation beam on two sides of the canyon, a certain number of rock anchor cables are arranged on the back of the cliff steep wall anchoring foundation beam, and the bridge deck system is composed of a steel structure curved beam, a pipe truss stiffening beam and a bridge deck. The slot-shaped hyperbolic paraboloid space suspension cable net system replaces a parallel cable system, so that the lateral stiffness and the torsional stiffness are greatly improved, and the wind resistance stability is good. The bridge tower structure and the sling are eliminated, the structure is simple and clear, the shape is beautiful, the construction is convenient, and the manufacturing cost is low.
Description
Technical Field
The invention belongs to the field of civil engineering, relates to a pedestrian suspension bridge, and particularly relates to a cliff net-hanging type pedestrian suspension bridge of a canyon river and a construction method thereof.
Background
Canyons typically develop in sections where tectonic movements rise and the valley slopes are composed of hard rock, primarily due to rapid uplift of the earth surface and violent undercutting of the river as a result of tectonic movements.
The canyon scenic region has unique topography and landform, is ambitious, has mountains with water, is ecological and diversified in animals and plants, is a popular tourist attraction, and is forgotten to return by tourists.
There are many famous canyon scenic spots at home and abroad, attracting a large number of tourists, such as the colorado canyon, peru coler canyon, mexico copper canyon and the like in the united states; the canyon of canyon, changjiang river sanxia, tai xing mountain canyon, Tianshan garage vehicle canyon, tai luge canyon and schen canyon, etc. in china.
In order to improve pedestrian traffic in the gorge river scenic region and facilitate tourists to enjoy the scenery of the gorge scenic region in a short distance, a pedestrian suspension bridge crossing the gorge river needs to be built.
How to build an artificial landscape suspension bridge by using the topographic features of the canyon scenic spot and how to reduce the manufacturing cost of the suspension bridge of the canyon scenic spot, the artificial suspension bridge with the characteristics of the canyon scenic spot usually has little investment, and how to build the artificial suspension bridge suitable for the characteristics of the canyon scenic spot is a difficult problem for engineers.
By using the structural structure of a suspended hammock, a spider web is simulated, the traditional parallel cable system suspension bridge is reformed by using the straight striation of a hyperbolic paraboloid and according to the theory of a horizontal pull type suspension bridge, and the suspended cliff net-hanging pedestrian suspension bridge of a canyon river is provided. The notch upwards hyperbolic paraboloid space cable net is hung on cliff steep walls on two sides of a canyon river, a bridge tower structure is cancelled, a sling is cancelled, and the pipe truss type bridge deck stiffening girder is directly placed on the hyperbolic paraboloid space cable net.
Disclosure of Invention
The technical problem is as follows: the invention provides a cliff steep wall hanging net type pedestrian suspension bridge of a canyon river, which has the advantages of simple structure, beautiful shape, convenient construction, good wind resistance stability and low manufacturing cost.
The technical scheme is as follows: the invention relates to a cliff steep wall hanging net type pedestrian suspension bridge of a canyon river, which comprises a hyperbolic paraboloid space cable net system, a cliff steep wall anchoring foundation beam, a rock anchor cable, a steel structure curved beam, a pipe truss stiffening beam and a bridge deck, and is characterized in that: the hyperbolic paraboloid space cable net system is formed by spatially crossing a plurality of finished cables prefabricated by factories, the space geometry of the hyperbolic paraboloid space cable net system is a notch-shaped space cable net formed by a notch which is upwards and drooping from the hyperbolic paraboloid space cable net, the hyperbolic paraboloid space cable net system is dispersedly anchored on cliff steep wall anchoring foundation beams at two sides of a canyon, a certain number of rock anchor ropes are arranged at the back of the cliff steep wall anchoring foundation beam, the bridge deck system is composed of a steel structure curved beam, a pipe truss stiffening beam and a bridge deck, the steel structure curved beam is arranged on the hyperbolic paraboloid space cable net system at a certain interval, the bottom parabolic pipe truss stiffening beam is arranged on the hyperbolic paraboloid space cable net system at the whole length, and the disconnected pipe truss stiffening beam is welded and connected to the left side and the right side of the steel structure curved beam at the intersection of the steel structure curved beam and the pipe truss stiffening beam, the bridge deck is placed on the top surface of the pipe truss stiffening beam.
Preferably, the cliff-steep wall-hanging net type pedestrian suspension bridge of the canyon river is characterized in that: the pipe truss stiffening girder is composed of an arc truss, longitudinal tie rods and longitudinal truss supports, wherein the left longitudinal tie rod and the right longitudinal tie rod are connected with the two end parts of the arc truss, and the longitudinal truss supports are connected with the middle waist part of the arc truss.
The construction method of the cliff steep wall hanging net type pedestrian suspension bridge of the canyon river comprises the following steps:
the first step is as follows: selecting bridge sites of the pedestrian suspension bridge in the gorge scenic area according to geological, topographic and topographic conditions of the gorge scenic area, and pouring cliff steep wall anchoring foundation beams after drilling holes to construct rock anchor cables on cliff steep walls;
the second step is that: according to a hyperbolic paraboloid mathematical equation, cross-arranging factory-prefabricated finished cables to form a hyperbolic paraboloid space cable net system;
the third step: the parabolic steel structure curved beams are horizontally arranged on the hyperbolic paraboloid space cable net system at certain intervals;
the fourth step: welding and assembling an arc truss, a longitudinal tie bar and a longitudinal truss support on two sides of the valley river to form a plurality of sections of pipe truss stiffening girders;
the fifth step: placing a pipe truss stiffening beam with a parabolic bottom on the hyperbolic paraboloid space cable net system, and firmly welding the disconnected pipe truss stiffening beam and the steel structure curved beam;
and a sixth step: the bridge deck is installed on the top surface of the pipe truss stiffening girder, the metal railings are installed, and the LED colored lamps are installed to form a canyon scenic spot pedestrian suspension bridge to receive visitors and put into operation.
The groove-mouth-shaped hyperbolic paraboloid space suspension net system replaces a parallel cable system, the oblique cross cables can provide horizontal component force, the leftward and rightward swinging and shaking of a pedestrian suspension bridge in a canyon scenic region are avoided, the torsional rigidity of the hyperbolic paraboloid space suspension net system is high, and the wind resistance stability of the hyperbolic paraboloid space suspension net system is greatly improved.
Has the advantages that: compared with the prior art, the invention has the following advantages:
the traditional parallel cable pedestrian suspension bridge is heavy in size, high in price and poor in wind resistance stability, and the parallel cable pedestrian suspension bridge is not suitable for a canyon scenic spot pedestrian suspension bridge with a narrow bridge deck.
The landscape requirement of the pedestrian suspension bridge in the canyon scenic region is high, the narrow structure of the bridge deck is light, and the wind resistance stability of the pedestrian suspension bridge needs to be treated by adopting effective technical measures.
The canyon scenic spot pedestrian suspension bridge is not a rigid bridge, and the capital investment for constructing the bridge is less, so that the canyon scenic spot pedestrian suspension bridge scheme needs to reduce the manufacturing cost so as to improve the bidding competitiveness.
The invention provides a suspended cliff steep wall net-hanging type pedestrian suspension bridge of a canyon river, which fully utilizes favorable landform and landform of the canyon scenic region, changes a traditional parallel cable system suspension bridge by referring to the structure of a suspension hammock, simulates a spider net, utilizes the straight striae of a hyperbolic paraboloid and reforms the theory of a horizontal pull type suspension bridge according to the straight striae of the suspension bridge, wherein a space cable net with an upward concave hyperbolic paraboloid is suspended on the cliff steep wall at two sides of the canyon river, a bridge tower structure and a sling are omitted, and a pipe truss type bridge deck stiffening beam is directly placed on the space cable net of the hyperbolic paraboloid.
The cliff steep wall hanging net type pedestrian suspension bridge based on the canyon river adopts a notch-shaped hyperbolic paraboloid space cable net model, has a beautiful curve, is just like a huge hammock net hung on a cliff steep wall, has a unique model, is just like a huge spider net hung on the cliff steep wall, is light and beautiful, and is beautiful and beautiful.
The space cables of the hyperbolic paraboloid are dispersedly anchored on cliff steep walls on two sides of a canyon scenic region, the cliff steep walls replace bridge tower structures, and the pedestrian suspension bridge is free of bridge tower structures, so that the manufacturing cost can be greatly reduced.
The traditional parallel cable pedestrian suspension bridge is provided with two thick and heavy cables at the left and right, a temporary catwalk needs to be built during cable construction, steel wire cables need to be tied up during high-altitude construction, a large-scale anchoring foundation needs to be built for the two thick and heavy cables, the construction difficulty is high, and the construction period is long.
The hyperbolic paraboloid space cable net is a plurality of strands of cables with dispersed fine small diameters, the whole is broken into parts, the plurality of strands of cables with small diameters can be finished cables prefabricated in factories, the cables are hung on two banks of a cliff steep wall, a temporary catwalk is not needed, the plurality of strands of cables with fine diameters can be anchored by dispersed rock anchor cable groups, a large anchoring foundation is not needed to be built, construction is convenient, and rapid assembly type construction can be realized.
The cliff steep wall hanging net type pedestrian suspension bridge based on the canyon river is a flat pull type suspension bridge, has no sling, is directly laid on a space cable net pocket with a concave upward hyperbolic paraboloid by a curved pipe truss type bridge deck stiffening girder at the bottom, can even be directly laid with a wood board or a rattan board, does not need the complicated construction process of hanging and assembling the bridge deck stiffening girder, and is simple and convenient to construct.
In a traditional suspension bridge with a parallel cable system, the left and right separated main steel wire cables can generate anisotropic vibration to drive the bridge deck to twist, so that the wind resistance stability is poor; the hyperbolic paraboloid space cables are in cross arrangement, the space cable net provides horizontal component force, the lateral stiffness is good, the leftward and rightward swinging and shaking of the pedestrian suspension bridge in the canyon scenic region are avoided, the space integrity of the space cable net is good, the torsional stiffness of the pedestrian suspension bridge can be greatly improved, and the wind resistance stability of the pedestrian suspension bridge can be greatly improved.
Cliff steep wall hanging net type pedestrian suspension bridge based on canyon river has the advantages of simple structure, beautiful shape, convenient construction, good wind resistance stability and low manufacturing cost, can be used for canyon river scenic spot pedestrian suspension bridge, has light structure, and can promote the humanistic connotation of the canyon scenic spot.
Drawings
FIG. 1 is a three-dimensional schematic diagram of a hyperbolic paraboloid space cable network system;
FIG. 2 is a three-dimensional schematic view of a cliff steep wall hanging mesh pedestrian suspension bridge of a canyon river;
FIG. 3 is a schematic view of the hyperbolic paraboloid geometry;
FIG. 4 is a three-dimensional schematic view of the deck system of FIG. 2;
FIG. 5 is a three-dimensional schematic view of the pipe truss stiffener of FIG. 4;
fig. 6 is a three-dimensional schematic view of the arc truss of fig. 5.
The figure shows that: a hyperbolic paraboloid space cable net system 1; the cliff steep wall anchors the foundation beam 2; a rock anchor cable 3; a steel structure curved beam 4; a pipe truss stiffening girder 5; an arc-shaped truss 51; a longitudinal tie bar 52; longitudinal truss-like struts 53; a bridge deck 6.
Detailed Description
The present invention will be further specifically described with reference to the accompanying drawings.
Example 1:
the invention relates to a cliff steep wall hanging net type pedestrian suspension bridge of a canyon river, which comprises a hyperbolic paraboloid space cable net system 1, a cliff steep wall anchoring foundation beam 2, a rock anchor cable 3, a steel structure curved beam 4, a pipe truss stiffening beam 5 and a bridge deck 6, and is characterized in that: the hyperbolic paraboloid space cable net system 1 is formed by spatially crossing a plurality of finished cables prefabricated by factories, the space geometry of the hyperbolic paraboloid space cable net system is a notch-shaped space cable net formed by a notch which is upwards and drooping from the hyperbolic paraboloid space cable net, the hyperbolic paraboloid space cable net system 1 is dispersedly anchored on cliff steep wall anchoring foundation beams 2 at two sides of a canyon, a certain number of rock anchor ropes 3 are arranged at the back of the cliff steep wall anchoring foundation beam 2, the bridge deck system is composed of a steel structure curved beam 4, a pipe truss stiffening beam 5 and a bridge deck 6, the steel structure curved beam 4 is arranged on the hyperbolic paraboloid space cable net system 1 at a certain interval, the pipe truss stiffening beam 5 in a parabolic shape at the bottom is arranged on the hyperbolic paraboloid space cable net system 1 at the full length, the intersection of the steel structure curved beam 4 and the pipe truss stiffening beam 5, and the disconnected pipe truss stiffening beam 5 is welded and connected to the left and right side surfaces of the steel structure curved beam 4, the deck slab 6 rests on the top surface of the pipe truss stiffener 5.
The pipe truss stiffening girder 5 is composed of an arc truss 51, a longitudinal tie bar 52 and a longitudinal truss support 53, wherein the left and right longitudinal tie bars 52 are connected with two end parts of the arc truss 51, and the longitudinal truss support 53 is connected with the middle waist part of the arc truss 51.
Example 2:
the invention discloses a construction method of a cliff suspended net type pedestrian suspension bridge of a canyon river, which is characterized by comprising the following steps of:
the first step is as follows: selecting a bridge site of a pedestrian suspension bridge in the gorge scenic area according to geological, topographic and topographic conditions of the gorge scenic area, and pouring a cliff steep wall anchoring foundation beam 2 after drilling holes on the cliff steep wall and constructing a rock anchor cable 3;
the second step is that: according to a hyperbolic paraboloid mathematical equation, cross-arranging factory-prefabricated finished cables to form a hyperbolic paraboloid space cable net system 1;
the third step: the parabolic steel structure curved beam 4 is horizontally arranged on the hyperbolic paraboloid space cable net system 1 at a certain interval;
the fourth step: welding and assembling the arc truss 51, the longitudinal tie bar 52 and the longitudinal truss support 53 on two sides of the valley river to form a plurality of sections of pipe truss stiffening girders 5;
the fifth step: placing a pipe truss stiffening beam 5 with a parabolic bottom on the hyperbolic paraboloid space cable network system 1, and firmly welding the disconnected pipe truss stiffening beam 5 and the steel structure curved beam 4;
and a sixth step: the bridge deck 6 is installed on the top surface of the pipe truss stiffening girder 5, the metal railings are installed, and the LED colored lamps are installed to form a canyon scenic spot pedestrian suspension bridge to receive visitors and put into operation.
Example 3:
the main span of a pedestrian landscape suspension bridge in a certain canyon river is 150m, the width of a bridge floor is 7.5m, in order to reduce the manufacturing cost and improve the competitive power for bidding, a bridge tower structure and a sling are eliminated, the structural scheme of hanging a net type pedestrian suspension bridge on the cliff steep wall is adopted, and the slot-shaped hyperbolic paraboloid space cable net system is dispersedly anchored on the cliff steep wall on the two sides of the canyon.
The geometric dimension of the hyperbolic paraboloid cable net is as follows: the length is 150 meters, the rise in the length direction is-0.9375 meters, the width is 15 meters, the rise in the width direction is 3.75 meters, and the plane projection slope k is 0.05.
The sag sagged sagittal span ratio of the hyperbolic paraboloid cable net is 1/30, the sag sagged middle part is 5m, and the cable net pedestrian suspension bridge is a flat pull type space cable net pedestrian suspension bridge. The hyperbolic paraboloid cable net adopts 14 high-strength steel wires with the diameter of 45mm under the pressure of 2000MPa to form a hyperbolic paraboloid crossed cable net suspension structure system.
The back of the cliff steep wall anchoring foundation beam is provided with a certain number of rock prestressed anchor cables which are arranged in double rows, the length of the rock prestressed anchor cables is 30m, the space between the rock prestressed anchor cables is 0.5m, the diameter of the rock prestressed anchor cables is 25mm, the rock prestressed anchor cables are manufactured by adopting prestressed steel strands with the strength of 1750MPa, 56 rock prestressed anchor cables are arranged on one side, and 112 rock prestressed anchor cables are arranged in a full-bridge mode.
The cliff steep wall anchoring foundation beam adopts a parabolic arc-shaped reinforced concrete foundation beam, the length of the parabolic arc-shaped reinforced concrete foundation beam is 16m, the width of the reinforced concrete foundation beam is 1m, the height of the beam is 1.5m, and reinforcing steel bars are arranged in the reinforced concrete foundation beam.
The bridge deck structure system consists of a steel structure curved beam, a pipe truss stiffening beam and a bridge deck plate, wherein the pipe truss stiffening beam consists of an arc truss, a longitudinal tie bar and a longitudinal truss support, and the glass bridge deck plate is constructed and installed on the top surface of the pipe truss stiffening beam.
The parabolic steel structure curved beam adopts a hollow steel pipe with the diameter of 375mm, and the wall thickness of the steel pipe is 12 mm.
The arc truss is composed of a parabolic arc lower chord, a horizontal upper chord and a vertical rod, the parabolic arc lower chord, the horizontal upper chord and the vertical rod are all hollow steel pipes with the diameter of 200mm, and the wall thickness of the steel pipes is 6 mm; the left longitudinal tie rod and the right longitudinal tie rod are connected with the end parts of two sides of the arc-shaped trusses, the longitudinal tie rods are hollow steel pipes with the diameter of 180mm, the wall thickness of the steel pipes is 5mm, the lower chord and the upper chord of the longitudinal truss type support are hollow steel pipes with the diameter of 180mm, the wall thickness of the steel pipes is 4mm, the web members of the longitudinal truss type support are hollow steel pipes with the diameter of 100mm, and the wall thickness of the steel pipes is 3 mm.
The bridge deck is made of toughened glass with the thickness of 200mm, and the glass bridge deck is placed on the top surface of the pipe truss stiffening beam.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.
Claims (3)
1. The utility model provides a cliff steep hanging net formula people walking suspension bridge of canyon river, includes hyperbolic paraboloid space cable net system (1), cliff steep wall anchor foundation beam (2), rock anchor rope (3), steel construction bent beam (4), pipe truss stiffening beam (5) and decking (6), its characterized in that: the hyperbolic paraboloid space cable net system (1) is formed by spatially crossing a plurality of finished cables prefabricated by factories, the space geometry of the hyperbolic paraboloid space cable net system is a notch-shaped space cable net formed by a notch which is upwards and drooping from the hyperbolic paraboloid space cable net, the hyperbolic paraboloid space cable net system (1) is dispersedly anchored on cliff steep wall anchoring foundation beams (2) at two sides of a canyon, a certain number of rock anchor ropes (3) are arranged at the back of the cliff steep wall anchoring foundation beam (2), the bridge deck system is composed of a steel structure curved beam (4), a pipe truss stiffening beam (5) and a bridge deck (6), the parabolic steel structure curved beam (4) is placed on the hyperbolic paraboloid space cable net system (1) at a certain interval, the pipe truss stiffening beam (5) in a parabolic shape at the bottom is placed on the hyperbolic paraboloid space cable net system (1) at the full length, and the intersection of the steel structure curved beam (4) and the pipe truss stiffening beam (5), the disconnected pipe truss stiffening girder (5) is welded on the left side and the right side of the steel structure curved girder (4), and the bridge deck (6) is placed on the top surface of the pipe truss stiffening girder (5).
2. The cliff-steep wall-hanging net type pedestrian suspension bridge of a canyon river as claimed in claim 1, wherein: the pipe truss stiffening girder (5) is composed of an arc truss (51), longitudinal tie rods (52) and longitudinal truss supports (53), wherein the left and right longitudinal tie rods (52) are connected with the two end parts of the arc trusses (51), and the longitudinal truss supports (53) are connected with the middle waist part of the arc trusses (51).
3. The construction method for preparing the cliff-suspended net type pedestrian suspension bridge of the canyon river according to claim 1, characterized by comprising the following steps:
the first step is as follows: selecting bridge sites of the pedestrian suspension bridge in the gorge scenic area according to geological, topographic and topographic conditions of the gorge scenic area, and pouring cliff steep wall anchoring foundation beams (2) after drilling holes on cliff steep walls and constructing rock anchor cables (3);
the second step is that: according to a hyperbolic paraboloid mathematical equation, finished cables prefabricated in a factory are arranged in a crossed mode to form a hyperbolic paraboloid space cable net system (1);
the third step: the parabolic steel structure curved beam (4) is horizontally arranged on the hyperbolic paraboloid space cable net system (1) at a certain interval;
the fourth step: welding and assembling an arc truss (51), a longitudinal tie bar (52) and a longitudinal truss support (53) on two sides of the valley river to form a plurality of sections of pipe truss stiffening girders (5);
the fifth step: placing a pipe truss stiffening beam (5) with a parabolic bottom on the hyperbolic paraboloid space cable net system (1), and firmly welding the disconnected pipe truss stiffening beam (5) and the steel structure curved beam (4);
and a sixth step: the bridge deck (6) is installed on the top surface of the pipe truss stiffening beam (5), the metal railings are installed, and the LED colored lamps are installed to form a canyon scenic spot pedestrian suspension bridge to receive visitors and put into operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111545502.9A CN114016374A (en) | 2021-12-16 | 2021-12-16 | Cliff steep wall hanging net type pedestrian suspension bridge of canyon river and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111545502.9A CN114016374A (en) | 2021-12-16 | 2021-12-16 | Cliff steep wall hanging net type pedestrian suspension bridge of canyon river and construction method thereof |
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| CN114016374A true CN114016374A (en) | 2022-02-08 |
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| GB567480A (en) * | 1943-02-02 | 1945-02-15 | Horace Holman | Improved device or means for supporting the ropes or cables of aerial ropeways or the like |
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| CN113622283A (en) * | 2021-08-24 | 2021-11-09 | 江苏中路工程技术研究院有限公司 | Horizontal pulling type pedestrian suspension bridge with hyperbolic paraboloid space crossed cable nets |
-
2021
- 2021-12-16 CN CN202111545502.9A patent/CN114016374A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB567480A (en) * | 1943-02-02 | 1945-02-15 | Horace Holman | Improved device or means for supporting the ropes or cables of aerial ropeways or the like |
| JP2004027516A (en) * | 2002-06-21 | 2004-01-29 | Oriental Construction Co Ltd | Composite truss segment and truss bridge for simultaneously using suspension cable by using this truss segment and its construction method |
| CN104213509A (en) * | 2014-09-26 | 2014-12-17 | 重庆交通建设(集团)有限责任公司 | Cable rope hoisting anchor rope type anchorage construction method |
| CN212742158U (en) * | 2020-07-08 | 2021-03-19 | 深圳市综合交通设计研究院有限公司 | Bridge and tunnel structure for crossing canyon at cliff |
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| CN113622283A (en) * | 2021-08-24 | 2021-11-09 | 江苏中路工程技术研究院有限公司 | Horizontal pulling type pedestrian suspension bridge with hyperbolic paraboloid space crossed cable nets |
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