CN111519512A - Combined bridge tower of curve-shaped cable-stayed bridge for super-large-span pedestrian landscape and construction method - Google Patents
Combined bridge tower of curve-shaped cable-stayed bridge for super-large-span pedestrian landscape and construction method Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
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- E—FIXED CONSTRUCTIONS
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- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
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Abstract
Aiming at the requirements of the ultra-large-span pedestrian landscape curved cable-stayed bridge, the door type bridge tower structure of the traditional cable-stayed bridge is reformed, and a combined bridge tower of the ultra-large-span pedestrian landscape curved cable-stayed bridge is formed by a single-leaf hyperboloid bridge tower body, a sightseeing tower cap, a bowl-shaped thin-wall shell skirt house and a circular ring-shaped sightseeing platform plate. Bowl form thin wall casing skirt house and single-leaf hyperboloid form bridge tower shape become a section of thick bamboo structure in a section of thick bamboo, a section of thick bamboo structure has strong antitorque ability in a section of thick bamboo, can ensure that curvilinear figure cable-stay bridge tower structure bears huge unbalanced torsion internal force, avoids the bridge tower support to rotate inefficacy. The tower body of the single-leaf hyperboloid-shaped bridge tower and the sightseeing tower cap form a sightseeing tower type bridge tower structure, the curved cable-stayed bridge tower and the sightseeing tower are combined into a whole, the foundation is shared, and the manufacturing cost is saved. The large-scale single-blade hyperboloid cylindrical bridge tower structure has strong lateral stiffness, can reduce the coupled vibration of the cable, the tower and the beam in the cantilever pouring construction process of the curved cable-stayed bridge, and can reduce the mid-span deflection deformation under the action of live load.
Description
Technical Field
The invention belongs to the field of civil engineering, relates to a construction technology of a cable-stayed bridge tower structure, and particularly relates to a combined bridge tower of an oversized span pedestrian landscape curved cable-stayed bridge and a construction method.
Background
The curved bridge has special aesthetic feeling in aesthetics, and the curved bridge is built in a lake park or a wetland park, so that the ecological environment of a scenic spot can be coordinated, and visitors can enjoy beautiful scenery along the way conveniently.
When the span of the curved beam bridge across the river is large, the beam bridge has great difficulty in structure and construction, and is very suitable if a large-span curved cable-stayed bridge is adopted.
As early as 1977, American Rusk bridge curved cable-stayed bridge design scheme has been proposed for American book Huaren forest co-inflammation, so as to obtain a plurality of international prizes, and the oversized span curved cable-stayed bridge structure is matched with the environment to complement each other, so that the model is beautiful and the beauty is attractive.
The oversized span curve-shaped cable-stayed bridge is formed by combining a curve-shaped main beam and a cable-stayed bridge, the structure is complex, the curve-shaped main beam simultaneously bears the combined action of bending moment, shearing force and torque, the bridge tower structure bears huge unbalanced torsion internal force, the bridge tower support is caused to rotate and lose efficacy, the cable design calculation and analysis are difficult, and the internal force balance control difficulty in the construction stage is large.
Until now, no curved cable-stayed bridge with an ultra-large span is built in the world, and the Ruck bridge becomes the most famous bridge beam not built in the world for a plurality of reasons, the main reason is that no firm rigid bridge tower structure scheme exists, and the cable-tower-beam three parts of the curved cable-stayed bridge generate coupling vibration, so that the cantilever assembling construction control of a post-tensioned prestressing space cable-stayed cable surface is very difficult.
The river of the wetland park is bent, the underwater islands of the wetland park are numerous, the underwater island can be utilized to build a large-scale cylindrical rigid cable-stayed bridge tower structure, and a curved cable-stayed bridge with an oversized span for the pedestrian landscape is built by matching with the environment of the park scenic spot, so that people can wait for the river to be wiped.
Aiming at the requirement of the curved cable-stayed bridge of the oversized span pedestrian landscape, the portal bridge tower structure of the traditional cable-stayed bridge is reformed, and a combined bridge tower structure system of the curved cable-stayed bridge is formed by four parts of a single-leaf hyperboloid bridge tower body, a sightseeing tower cap, a bowl-shaped thin-wall shell skirt house and a circular sightseeing platform plate structure.
Bowl form thin wall casing skirt house and single-leaf hyperboloid form bridge tower body form a section of thick bamboo structure in a section of thick bamboo, and a section of thick bamboo structure has powerful antitorque ability in a section of thick bamboo, can ensure to undertake the huge unbalanced torsion internal force of curvilinear figure cable-stay bridge pylon, avoids the pylon support to rotate inefficacy.
The single-leaf hyperboloid-shaped bridge tower body and the sightseeing tower cap form a sightseeing tower type bridge tower structure, the cable-stayed bridge tower and the sightseeing tower are combined into a whole, the foundation is shared, and the manufacturing cost is saved.
The spatial cable-stayed cable net is reliably anchored by utilizing the large-scale single-blade hyperboloid cylindrical rigid bridge tower structure, the coupling vibration of the cable, the tower and the beam of the curved cable-stayed bridge is reduced, and the stable safety requirement of the cantilever casting of the bridge deck of the curved stiffening beam can be ensured until the curved cable-stayed bridge is assembled and folded.
A skirt house with a bowl-shaped thin-wall shell is built at the bottom of the bridge tower of the single-leaf hyperboloid sightseeing tower, so that tourists can conveniently enter the sightseeing bridge tower; the circular ring-shaped sightseeing platform is arranged at the top of the skirt house of the bowl-shaped thin-wall shell, and the curved bridge floor is connected with the circular ring-shaped sightseeing platform, so that the traffic is smooth; the side pier of the pedestrian landscape curved cable-stayed bridge adopts a single-leaf hyperboloid variable-section single-column type hollow pier, and the shape is beautiful; the bridge floor of the pedestrian landscape curved cable-stayed bridge is provided with small building products such as flower beds, seats and the like, trees are planted, and the ecological environment is protected.
Disclosure of Invention
The technical problem is as follows: the combined bridge tower structure system is composed of a single-sheet hyperboloid-shaped bridge tower body, a sightseeing tower cap, a bowl-shaped thin-wall shell skirt house and four annular sightseeing platform plate structures, a cylinder structure system in a cylinder is formed at the bottom of the curved cable-stayed bridge combined bridge tower, a cylinder structure in the cylinder has strong torsion resistance, the rotation failure of a cable-stayed bridge tower support can be avoided, in addition, the sightseeing tower type bridge tower and the curved cable-stayed bridge tower are combined into one, a foundation is shared, and the manufacturing cost is saved.
The technical scheme is as follows: the invention relates to a combined bridge tower of a curved cable-stayed bridge for an oversized span pedestrian landscape, which comprises a cable-stayed bridge combined bridge tower structure system, a curved stiffening beam, a spatial cable-stayed cable net, a single-blade hyperboloid variable cross-section unistrut type cable-stayed bridge side pier and a bridge deck flower bed, and is characterized in that: the cable-stayed bridge combined bridge tower structure system is composed of four parts of a single-leaf hyperboloid bridge tower body, a sightseeing tower cap, a bowl-shaped thin-wall shell skirt house and a circular sightseeing platform plate structure, wherein the top of the single-leaf hyperboloid bridge tower body is provided with the sightseeing tower cap, the single-leaf hyperboloid bridge tower body is placed in the bowl-shaped thin-wall shell skirt house, the top of the bowl-shaped thin-wall shell skirt house is provided with the circular sightseeing platform plate structure, the circular sightseeing platform plate structure is firmly connected with the single-leaf hyperboloid bridge tower body at an inner ring, one end of a space cable-stayed net is anchored at the upper part of the single-leaf hyperboloid bridge tower body, the other end of the space cable-stayed net drags a curved stiffening beam, one end of the curved stiffening beam is connected with the circular sightseeing platform plate structure, the other end of the curved stiffening beam is placed on a single-leaf hyperboloid variable-section single-, and a bridge deck flower bed is arranged on the curved stiffening girder, flowers and plants are planted, and the ecological environment is protected.
Preferably, the single-blade hyperboloid-shaped bridge tower body is a single-blade hyperboloid-shaped steel tube concrete thin-wall cylinder structure, a plurality of reinforced concrete diaphragm plates are arranged in the single-blade hyperboloid-shaped bridge tower body, and a circular elevator is arranged at the central position of the single-blade hyperboloid-shaped bridge tower body.
Preferably, the bowl-shaped thin-wall shell skirt house is a bowl-shaped structure consisting of a cylindrical thin-wall shell at the lower part and a rotating curved surface thin-wall shell at the upper part, a plurality of annular reinforced concrete transverse partition plates are arranged in the bowl-shaped thin-wall shell skirt house, a reinforced concrete huge ring beam structure is arranged at the bowl opening of the bowl-shaped thin-wall shell skirt house, and the annular sightseeing platform plate structure is used as a top cover of the bowl-shaped thin-wall shell skirt house.
The invention relates to a construction method of a combined bridge tower of a curved cable-stayed bridge of an oversized span pedestrian landscape, which is characterized by comprising the following steps of: the method comprises the following steps:
the first step is as follows: selecting a bridge site according to the landform of a wetland park or a lake park, carrying out pile foundation construction, carrying out single-leaf hyperboloid-shaped bridge tower body construction, and installing a sightseeing tower cap to form a cable-stayed bridge tower column structure;
the second step is that: constructing a skirt house with a bowl-shaped thin-wall shell and a circular sightseeing platform plate structure to form a cable-stayed bridge combined bridge tower structure system;
the third step: constructing a bridge approach, and constructing a side pier of the leaf hyperboloid variable-cross-section single-column cable-stayed bridge and an auxiliary pier of the cable-stayed bridge;
the fourth step: anchoring a spatial cable-stayed net at the upper part of the single-blade hyperbolic bridge tower body, and performing on-site cantilever construction on the reinforced concrete curve-shaped stiffening beam by adopting a cantilever pouring method until the bridge floor is closed;
the fifth step: carrying out bridge deck pavement construction, mounting small building products such as bridge deck flower beds and the like, and planting flowers and plants to form an ecological bridge deck;
and a sixth step: and (4) carrying out the interior decoration of the sightseeing tower, installing an elevator, installing a railing and a street lamp, forming a curved cable-stayed bridge of the pedestrian landscape with an oversized span, and putting into operation.
Two unifications of cable-stay bridge pylon structure and sightseeing tower structure, the function is complementary, brings out the best in each other, and sightseeing tower structure has promoted the view bridge aesthetic effect of people as cable-stay bridge's pylon structure, has made things convenient for visitor's high altitude to view and admire scenic spot beautiful scenery, has increased the cultural connotation of view cable-stay bridge.
Bowl form thin wall casing skirt house and single-leaf hyperboloid form bridge tower shape become a section of thick bamboo structure in a section of thick bamboo, a section of thick bamboo structure has strong antitorque ability in a section of thick bamboo, can ensure to undertake the huge unbalanced torsion internal force of curvilinear figure cable-stay bridge tower structure, avoids the bridge tower support to rotate inefficacy.
The single-leaf hyperboloid-shaped bridge tower body and the sightseeing tower cap form a sightseeing tower type bridge tower structure, the curved cable-stayed bridge tower and the sightseeing tower are combined into a whole, the cable-stayed bridge and the sightseeing tower share the foundation and the tower body, and the manufacturing cost is saved.
The large-scale single-blade hyperboloid cylindrical bridge tower structure has strong lateral stiffness, can reduce the coupling vibration of the cable, the tower and the beam in the cantilever pouring construction process of the curved cable-stayed bridge, can reduce the bending effect of the oversized span curved cable-stayed bridge, and can reduce the mid-span deflection deformation under the action of live load.
Has the advantages that: compared with the prior art, the invention has the following advantages:
the ultra-large span curve-shaped cable-stayed bridge has a complex structure, a curve main beam simultaneously bears the combined action of bending moment, shearing force and torque, the bending and twisting effect is obvious, the cable design calculation and analysis are difficult, the internal force balance control difficulty in the construction stage is very high, and the structural rigidity of a cable-stayed bridge tower has great influence on the stress performance of the ultra-large span curve-shaped cable-stayed bridge.
The two bridge tower structures of the curved cable-stayed bridge and the linear cable-stayed bridge have huge differences, the linear cable-stayed bridge is a simple bridge tower structure stressed in two dimensions on a plane, the bridge tower structure of the curved cable-stayed bridge is a complex bridge tower structure stressed in three dimensions, and the bridge tower structure of the curved cable-stayed bridge bears huge unbalanced torsion internal force as if the phenomenon of twisting a bottle cover is generated, so that the rotation failure of a bridge tower support can be caused.
The door-type bridge tower structure of the traditional cable-stayed bridge has single function, the door-type cable-stayed bridge tower structure is connected with a curved bridge deck stiffening girder by simple consolidation, and the door-type cable-stayed bridge tower structure cannot bear the compound internal force action of huge bending moment and torque transmitted by the curved stiffening girder bridge deck, so that the curved cable-stayed bridge with large span is still not built in the world until today, and the innovation of the bridge tower structure reformation of the curved cable-stayed bridge with the oversized span must be carried out.
As is well known, the closed cylindrical structure has good torsion resistance, the cylindrical-in-cylindrical structure can resist huge torsion, and the bottom of the curved cable-stayed bridge is in a strong cylindrical-in-cylindrical structure form, so that the rotation failure damage of the tower support of the curved cable-stayed bridge can be avoided.
The combined bridge tower structure system of the curved cable-stayed bridge is formed by four parts, namely the single-blade hyperbolic surface-shaped bridge tower body, the sightseeing tower cap, the bowl-shaped thin-wall shell skirt house and the circular ring-shaped sightseeing platform plate, the curved cable-stayed bridge with the ultra-large span adopts a combined bridge tower structure to ensure the tower beam consolidation and connection effect of the curved cable-stayed bridge, and the combined bridge tower structure can bear the compound internal force effect of huge bending moment and torque transmitted from the bridge floor of the curved stiffening beam.
The tower body of the single-blade hyperbolic-surface-shaped bridge tower, the tower bottom bowl-shaped thin-wall shell skirt house structure and the annular sightseeing platform plate structure form a cylinder-in-cylinder structure, the huge cylinder-in-cylinder structure at the tower bottom has strong torsion resistance and can resist the action of huge torque internal force transmitted by a curved stiffening beam bridge deck, and the curved stiffening beam bridge deck can be ensured not to generate torsion deformation at a curved cable-stayed bridge support, so that the tower beam consolidation effect at the crossed support of the curved stiffening beam bridge deck and the combined bridge tower structure is ensured.
The large-scale single-sheet hyperboloid sightseeing tower structure has high lateral stiffness, the cable-stayed cables are anchored on the upper portion of the single-sheet hyperboloid sightseeing tower with high lateral stiffness, the cable-stayed cables lift the curved stiffening beam bridge floor, the rigid cable-stayed bridge tower of the large-scale single-sheet hyperboloid thin-wall shell can reduce cable-tower-beam three coupling vibration of a curved cable-stayed bridge, the torsion effect of the oversized span curve cable-stayed bridge can be reduced, mid-span deflection deformation under the action of live load can be reduced, construction tensioning construction control of the cable-stayed cables is facilitated, and bridge-forming linear control of the curved cable-stayed bridge is facilitated.
The single-leaf hyperbolic-surface bridge tower body and the sightseeing tower cap form a sightseeing tower type bridge tower structure, the curved cable-stayed bridge tower and the sightseeing tower are combined into a whole, the curved cable-stayed bridge and the sightseeing tower share the same tower body and foundation, the construction investment of wetland parks or lake view parks is saved, and the economic benefit is remarkable.
The sightseeing tower and the curved cable-stayed bridge are combined into a whole, functions are complementary, the model is novel, the vertical face is rich, the aesthetic effect of the pedestrian landscape bridge is improved, the sightseeing restaurant tower cap is arranged on the top of the single-leaf hyperboloid bridge tower, visitors can conveniently enjoy scenic spots in scenic spot parks, and the aesthetic requirement, the traffic function and the sightseeing function are met.
The curve structures of a thin waist sightseeing tower structure, a curved box girder bridge floor, a tower bottom giant bowl-shaped thin-wall shell skirt house and a single-blade hyperbolic surface variable-section single-column cable-stayed bridge side pier are mutually reflected and complemented by introducing various curve elements and in a single-blade hyperbolic surface modeling manner, and the curve elements are beautiful in curve configuration and coquettish.
A circular ring platform is arranged at the single-leaf hyperboloid sightseeing tower type bridge tower, and the curved bridge deck is connected with the circular ring sightseeing platform, so that traffic organization is smooth.
Leisure building articles such as flower beds and seats are placed on the bridge deck of the pedestrian landscape curved cable-stayed bridge, flowers and plants are planted, the ecological environment is protected, and the cultural connotation of the pedestrian landscape curved cable-stayed bridge is increased.
According to the design concept of the ecological landscape bridge, a single-leaf hyperboloid-shaped sightseeing tower is built in a scenic spot of a wetland park or a lake park, a sightseeing restaurant tower cap is arranged on the tower top, a bowl-shaped thin-wall shell skirt house structure is constructed at the tower bottom, and a circular sightseeing platform plate structure is constructed at the top of the bowl-shaped thin-wall shell to form a curve cable-stayed bridge combined bridge tower structure. A cable-stayed cable is installed on a tower body of the single-blade hyperboloid sightseeing tower, a curved box girder stiffening girder is constructed by a cantilever pouring method until a bridge floor is closed, building articles such as flower beds and the like of the bridge floor are installed, flowers and plants are planted, and the ultra-large span manned landscape curved cable-stayed bridge of the single-blade hyperboloid bridge tower is formed.
The combined bridge tower of the curve-shaped cable-stayed bridge with the oversized-span pedestrian landscape has the advantages of reasonable stress structure, strong torsion resistance, large lateral stiffness resistance, attractive curve shape, rich vertical faces, strong landscape property, ecological environmental protection, smooth traffic organization, convenient construction, good cost performance and the like, and is suitable for wetland parks or lake park to build the curve-shaped cable-stayed bridge with the oversized-span pedestrian landscape with the characteristic theme.
Drawings
FIG. 1 is a three-dimensional schematic view of a combined pylon of a curved cable-stayed bridge for a super-large span pedestrian landscape;
FIG. 2 is a three-dimensional schematic illustration of the composite pylon structure of the cable-stayed bridge of FIG. 1;
FIG. 3 is a three-dimensional schematic view of the bowl-shaped thin-walled shell skirt of FIG. 2;
FIG. 4 is a three-dimensional schematic view of the single-leaf hyperbolic pylon body and the sightseeing pylon cap of FIG. 2;
FIG. 5 is a schematic view of a single-sheet hyperboloid geometry;
fig. 6 is a three-dimensional schematic view of a single-blade hyperboloid variable-section single-column cable-stayed bridge side pier.
The figure shows that: a cable-stayed bridge combined bridge tower structure system 1; a single-blade hyperboloid-shaped pylon body 11; a sightseeing tower cap 12; a bowl-shaped thin-wall shell skirt house 13; a circular sightseeing platform plate structure 14; a curved stiffening beam 2; a spatial diagonal cable net 3; a single-blade hyperboloid variable-cross-section single-column cable-stayed bridge side pier 4; an auxiliary pier 5 of the cable-stayed bridge; and a bridge deck flower bed 6.
Detailed Description
The present invention will be further specifically described with reference to the accompanying drawings.
Example 1:
the invention relates to a combined bridge tower of a curved cable-stayed bridge for an oversized span pedestrian landscape, which comprises a cable-stayed bridge combined bridge tower structure system 1, a curved stiffening girder 2, a space cable-stayed cable net 3, a single-blade hyperboloid variable-section single-column cable-stayed bridge side pier 4 and a bridge deck flower bed 6, and is characterized in that: the cable-stayed bridge combined bridge tower structure system 1 consists of four parts, namely a single-leaf hyperbolic bridge tower body 11, a sightseeing tower cap 12, a bowl-shaped thin-wall shell skirt house 13 and a circular sightseeing platform plate structure 14, wherein the top of the single-leaf hyperbolic bridge tower body 11 is provided with the sightseeing tower cap 12, the single-leaf hyperbolic bridge tower body 11 is placed in the bowl-shaped thin-wall shell skirt house 13, the top of the bowl-shaped thin-wall shell skirt house 13 is provided with the circular sightseeing platform plate structure 14, the circular sightseeing platform plate structure 14 is firmly connected with the single-leaf hyperbolic bridge tower body 11 at the inner ring, one end of a space cable-stayed net 3 is anchored at the upper part of the single-leaf hyperbolic bridge tower body 11, the other end of the space cable-stayed net 3 pulls a curved stiffening beam 2, one end of the curved stiffening beam 2 is connected with the circular sightseeing platform plate structure 14 in a curved manner, the other end of the stiffening beam 2 is placed on the single-leaf hyperbolic cross-section variable-section cable-stayed bridge pier edge 4, bridge deck flower beds 6 are arranged on the curved stiffening beams 2, flowers and plants are planted, and the ecological environment is protected.
The single-leaf hyperboloid-shaped bridge tower body 11 is a single-leaf hyperboloid-shaped steel tube concrete thin-wall cylinder structure, a plurality of reinforced concrete diaphragm plates are arranged in the single-leaf hyperboloid-shaped bridge tower body, and a round elevator is arranged in the center of the single-leaf hyperboloid-shaped bridge tower body.
The bowl-shaped thin-wall shell skirt house 13 is a bowl-shaped structure formed by a cylindrical thin-wall shell at the lower part and a rotary curved surface thin-wall shell at the upper part, a plurality of annular reinforced concrete transverse partition plates are arranged in the bowl-shaped thin-wall shell skirt house 13, a reinforced concrete huge ring beam structure is arranged at the bowl opening of the bowl-shaped thin-wall shell skirt house 13, and the annular sightseeing platform plate structure 14 is used as a top cover of the bowl-shaped thin-wall shell skirt house 13.
Example 2:
the invention relates to a construction method of a combined bridge tower of a curved cable-stayed bridge of an oversized span pedestrian landscape, which is characterized by comprising the following steps of: the method comprises the following steps:
the first step is as follows: selecting a bridge site according to the landform and the landscape of a wetland park or a lake park, constructing a pile foundation, constructing a single-leaf hyperboloid-shaped bridge tower body 11, and installing a sightseeing tower cap 12 to form a cable-stayed bridge tower column structure;
the second step is that: constructing a bowl-shaped thin-wall shell skirt house 13 and a circular sightseeing platform plate structure 14 to form a cable-stayed bridge combined bridge tower structure system 1;
the third step: constructing a bridge approach, namely constructing a side pier 4 of the leaf hyperboloid-shaped variable-cross-section single-column cable-stayed bridge and an auxiliary pier 5 of the cable-stayed bridge;
the fourth step: anchoring a spatial cable-stayed net 3 at the upper part of a single-leaf hyperboloid bridge tower body 11, and performing on-site cantilever construction on a reinforced concrete curve-shaped stiffening beam 2 by adopting a cantilever pouring method until a bridge floor is closed;
the fifth step: carrying out bridge deck pavement construction, mounting small building products such as a bridge deck flower bed 6 and the like, and planting flowers and plants to form an ecological bridge deck;
and a sixth step: and (4) carrying out the interior decoration of the sightseeing tower, installing an elevator, installing a railing and a street lamp, forming a curved cable-stayed bridge of the pedestrian landscape with an oversized span, and putting into operation.
Example 3:
the owner of landscape bridge in lake and park has two requirements of curved landscape bridge and sightseeing tower-type cable-stayed bridge tower, so that it adopts the new technology of pedestrian landscape curved cable-stayed bridge of single-leaf hyperboloid sightseeing bridge tower.
The ultra-large span manway landscape curved cable-stayed bridge in the lake landscape park has the span of 2 multiplied by 150 meters, the bridge tower adopts a single-leaf hyperboloid sightseeing tower type bridge tower structure, the bridge deck structure adopts a curved concrete box girder structure, and the side pier of the cable-stayed bridge adopts a single-leaf hyperboloid variable-section single-column type hollow pier.
The height of the single-leaf hyperboloid sightseeing cable-stayed bridge tower is 110 meters, the structure of the sightseeing tower and the bridge tower is composed of a sightseeing tower body, a sightseeing tower cap and a tower bottom bowl-shaped thin-wall shell skirt house, the height of the sightseeing tower body is 90 meters, and the height of the sightseeing tower cap is 20 meters.
The diameter of the tower body of the variable-section single-blade hyperboloid sightseeing tower is 10-20 meters, the thinnest waist position of the bridge tower is 60 meters above the ground, the wall thickness of the tower body is 400mm, a reinforced concrete structure is adopted, C50 concrete is poured, a plurality of reinforced concrete partition plates are arranged inside the tower body, and a circular sightseeing elevator is arranged inside the tower body.
The skirt house with the bowl-shaped thin-wall shell at the tower bottom adopts a reinforced concrete bowl-shaped thin-wall shell structure, the wall thickness is 300mm, C40 concrete is poured, the diameter of the bowl opening is 50m, the diameter of the bowl bottom is 30 m, the total height of the bowl-shaped skirt house is 15m, a reinforced concrete ring beam is arranged at the bowl opening, and the cross section of the ring beam is 400 multiplied by 2000 mm.
The curved bridge deck adopts a single-box double-chamber concrete box girder structure, the width of the bridge deck is 16 meters, the height of the box girder is 2 meters, the thicknesses of a top plate, a bottom plate and a vertical plate of the concrete box girder are all 300mm, a concrete partition plate with the thickness of 200m is arranged at intervals of 15 meters, C40 concrete is adopted for pouring, and the curved box girder stiffening plate of the cable-stayed bridge is fixedly connected with the single-leaf hyperboloid sightseeing cable-stayed bridge tower.
The ring-shaped sightseeing platform is arranged around the single-leaf hyperboloid bridge tower and is of a reinforced concrete box structure, twelve radial reinforced concrete transverse partition plates are uniformly arranged in the ring-shaped sightseeing platform plates, the cross section size of each transverse partition plate is 300 multiplied by 2000mm, two ends of each transverse partition plate are respectively placed on the tower bottom bowl-shaped thin-wall shell skirt house and the single-leaf hyperboloid bridge tower structure, one ring-shaped partition plate is arranged in the ring-shaped box girder of the sightseeing platform, the cross section size of each ring-shaped partition plate is 250 multiplied by 2000mm, the thicknesses of the top of the ring-shaped box girder sightseeing platform and the bottom plate are both 300mm, and C40.
The side pier of the cable-stayed bridge is a single-leaf hyperboloid variable-section reinforced concrete single-column hollow pier, the height of the side pier is 15 meters, the oval cross-section size of a tower body is 3 meters of a long axis and a short axis, 6 meters of the long axis and the short axis, 12 meters of the long axis and the short axis, the wall thickness of the single-leaf hyperboloid hollow pier is 250mm, C40 concrete is poured, the thinnest waist position is 5 meters away from the ground, the size of the top of the pier body is the largest, and the top of the pier body is.
The wire cable of the designed curved cable-stayed bridge is a high-strength wire cable with the diameter of 0.15m, the distance between the wire cables is 15m, 2-span multiplied by 2 multiplied by 8 pairs of wire cables are totally adopted, and the parallel wire cables adopt 1670MPa high-strength wires with the diameter of phi 5.2 mm.
In order to improve the structural integrity and the structural rigidity of the large-span curved cable-stayed bridge and reduce the bending effect of the large-span curved cable-stayed bridge, an auxiliary pier of the cable-stayed bridge is arranged at the east position where the main bridge of the curved cable-stayed bridge collapses, the distance between the auxiliary pier of the cable-stayed bridge and the side pier of the east cable-stayed bridge is 45 meters, and the cross section size of the auxiliary pier of the cable-stayed bridge is the same as that of the side pier of the cable-stayed bridge.
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 (4)
1. The utility model provides a super large stride footpath manway curvilinear figure cable-stay bridge's combination bridge tower, includes cable-stay bridge combination bridge tower structural system (1), curvilinear figure stiffening beam (2) and space cable-stay cable net (3), its characterized in that: the cable-stayed bridge combined bridge tower structure system (1) consists of a single-blade hyperbolic bridge tower body (11), a sightseeing tower cap (12), a bowl-shaped thin-wall shell skirt house (13) and a circular ring-shaped sightseeing platform plate structure (14), wherein the top of the single-blade hyperbolic bridge tower body (11) is provided with the sightseeing tower cap (12), the single-blade hyperbolic bridge tower body (11) is placed in the bowl-shaped thin-wall shell skirt house (13), the top of the bowl-shaped thin-wall shell skirt house (13) is provided with the circular ring-shaped sightseeing platform plate structure (14), the circular ring-shaped sightseeing platform plate structure (14) is connected with the single-blade hyperbolic bridge tower body (11) at the inner ring part, one end of a space cable-stayed net (3) is anchored at the upper part of the single-blade hyperbolic bridge tower body (11), the other end of the space cable-stayed net (3) is cable-stayed to pull a circular ring-shaped stiffening beam (2), one end of the curved stiffening beam (2) is connected with the sightseeing platform plate structure, the other end of the curved stiffening beam (2) is arranged on the single-blade hyperboloid variable-section single-column cable-stayed bridge side pier (4).
2. The combined bridge tower of the curved cable-stayed bridge with the ultra-large span manway landscape according to claim 1, which is characterized in that: the single-blade hyperboloid-shaped bridge tower body (11) is of a single-blade hyperboloid-shaped steel tube concrete thin-wall cylinder structure, a plurality of reinforced concrete transverse partition plates are arranged in the single-blade hyperboloid-shaped bridge tower body, and a circular elevator is arranged in the center of the single-blade hyperboloid-shaped bridge tower body.
3. The combined bridge tower of the curved cable-stayed bridge with the ultra-large span manway landscape according to claim 1, which is characterized in that: the bowl-shaped thin-wall shell skirt house (13) is a bowl-shaped structure consisting of a cylindrical thin-wall shell at the lower part and a rotary curved surface thin-wall shell at the upper part, a plurality of circular reinforced concrete transverse partition plates are arranged in the bowl-shaped thin-wall shell skirt house (13), a reinforced concrete huge ring beam structure is arranged at the bowl opening of the bowl-shaped thin-wall shell skirt house (13), and the circular ring-shaped sightseeing platform plate structure (14) is used as a top cover of the bowl-shaped thin-wall shell skirt house (.
4. A construction method for constructing a combined bridge tower of the curved cable-stayed bridge with the oversized span manned landscape according to claim 1 is characterized in that: the method comprises the following steps:
the first step is as follows: according to the landform and the landscape of a wetland park or a lake park, selecting a bridge site, carrying out pile foundation construction, carrying out single-leaf hyperboloid-shaped bridge tower body (11) construction, and installing a sightseeing tower cap (12) to form a cable-stayed bridge tower column structure;
the second step is that: constructing a bowl-shaped thin-wall shell skirt house (13) and a circular sightseeing platform plate structure (14) to form a cable-stayed bridge combined bridge tower structure system (1);
the third step: constructing a bridge approach, namely constructing a side pier (4) of the hyperboloid-shaped variable-cross-section single-column cable-stayed bridge and an auxiliary pier (5) of the cable-stayed bridge;
the fourth step: anchoring a spatial cable-stayed net (3) at the upper part of a single-blade hyperbolic bridge tower body (11), and performing on-site cantilever construction on a reinforced concrete curved stiffening beam (2) by adopting a cantilever pouring method until a bridge floor is closed;
the fifth step: carrying out bridge deck pavement construction, mounting a bridge deck flower bed (6), and planting flowers and plants to form an ecological bridge deck;
and a sixth step: and (4) carrying out the interior decoration of the sightseeing tower, installing an elevator, installing a railing and a street lamp, forming a curved cable-stayed bridge of the pedestrian landscape with an oversized span, and putting into operation.
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