CN213804829U - Short-side span cable-stayed bridge structure of steel pipe concrete egg-shaped curve arch bridge tower - Google Patents
Short-side span cable-stayed bridge structure of steel pipe concrete egg-shaped curve arch bridge tower Download PDFInfo
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- CN213804829U CN213804829U CN202022249681.9U CN202022249681U CN213804829U CN 213804829 U CN213804829 U CN 213804829U CN 202022249681 U CN202022249681 U CN 202022249681U CN 213804829 U CN213804829 U CN 213804829U
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- 239000011372 high-strength concrete Substances 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 6
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- 235000013601 eggs Nutrition 0.000 description 54
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 4
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- 239000011384 asphalt concrete Substances 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
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Abstract
According to an egg-shaped curve equation, a fire is used for bending and processing variable-section steel pipe segments, the diameter of a top steel pipe is small, the diameter of a bottom steel pipe is large, welding, assembling and forming are carried out on a construction site, variable-section egg-shaped curve-shaped steel pipe arch ribs are formed, the egg-shaped curve-shaped steel pipe arch ribs are hoisted to be in place, high-strength concrete is poured into the steel pipes, and the steel pipe concrete egg-shaped curve-shaped bridge tower is formed. The left and right steel tube concrete egg curve arch bridge towers which incline outwards are positioned on a cable-stayed bridge foundation, a cable-stayed cable net and a cable-stayed back-twisted cable net are obliquely installed in the installation space at the top of the bridge tower, a bridge deck stiffening girder is installed by adopting a cantilever construction method until the bridge deck is folded, and the cable-stayed bridge is spanned by the short sides of the steel tube concrete egg curve arch bridge towers. Compare in the arched bridge tower of steel pipe concrete parabola arch of sharp top of the tower, the unique graceful of arch bridge tower of steel pipe concrete egg curve molding, the hunch foot draws in, has reduced the basis size, and the top is wide, and the space suspension cable is dispersed and is arranged, and the view effect is better, and it is more convenient to arrange the space cable.
Description
Technical Field
The invention belongs to the field of bridge engineering, relates to a construction technology of a cable-stayed bridge structure, and particularly relates to a short-side span cable-stayed bridge structure of a concrete filled steel tube egg-shaped curve arch bridge tower.
Background
Along with the progress of the design and construction technology of the cable-stayed bridge, the structural form of the bridge tower of the cable-stayed bridge is diversified along with the improvement of the landscape requirement of the cable-stayed bridge.
The parabola arch bridge tower is a great improvement of a cable-stayed bridge tower structure, is attractive in shape and popular with engineers, and has certain defects.
Firstly, the distance between two legs at the bottom of the arch foot of the parabolic arch-shaped bridge tower is too large, and the two legs are not folded, so that the span of a connecting beam for supporting a bridge floor is too large, and the area of a foundation of the bridge tower is increased.
Secondly, the top of the parabola arch bridge tower is in a high-height pointed shape, the space cable-stayed cables of the parabola arch bridge tower structure cannot be effectively scattered and arranged, the landscape effect of the space cable-stayed cables is not obvious, and the landscape effect of the parabola arch bridge tower cable-stayed bridge structure is influenced.
Aiming at the improvement requirement of a parabolic arched bridge tower of a cable-stayed bridge, according to an egg-shaped curve equation, a fire bending manufacturing process is adopted, variable-section steel pipe sections are bent, welding forming is carried out, high-strength concrete is poured into steel pipes, the steel pipe concrete egg-shaped curved arched bridge tower is formed, the shape is attractive, arch foot legs of the egg-shaped curved arched bridge tower are folded, arch foot connecting beam spans are reduced, the area of a bridge tower foundation is reduced, the top of the egg-shaped curved arched bridge tower is wide, the landscape effect of three-dimensional space cables is better, the space cable-stayed cable structural system which is scattered greatly improves the space rigidity of the ultra-large-span cable-stayed bridge, and the flutter wind resistance stability of the space cable-stayed bridge is enhanced.
Because the urban construction land used is nervous, the urban cable-stay bridge adopts the minor face to stride cable-stay bridge structural scheme usually, the minor face strides the middle stride of cable-stay bridge greatly, both sides stride the footpath little, the minor face strides the limit of cable-stay bridge and need exert the counter weight processing usually, the minor face strides the bridge tower of cable-stay bridge and adopts tilting cable-stay bridge pylon form usually, relies on the gravity moment of leaning on the body of the tower to come the balanced asymmetric minor face and stride the overturning moment of cable-stay bridge to can reduce the quantity of limit stride counter weight material.
Concrete filled steel tube egg curve arch pylon is particularly suitable for the slope pylon structural requirement that the cable-stay bridge was striden to the city minor face, and the construction of egg curve arch concrete filled steel tube slope pylon hoist and mount is swift, and structure anti-seismic performance is good, and egg curve arch pylon top is broad, and the view effect of three-dimensional space cable is better, can stride the side span of cable-stay bridge and incline between the pylon at the minor face and can form beautiful space back of the body cable molding of turning round, and its view effect is obviously outstanding.
Disclosure of Invention
The technical problem is as follows: according to the egg-shaped curve equation, the variable cross-section steel pipe is bent by adopting the firer bending process, concrete is poured into the steel pipe, a steel pipe concrete egg curve arch bridge tower is formed, arch foot legs of the arch tower are folded, the top of the bridge tower is wide, the shape is attractive, the landscape effect of a three-dimensional space cable rope which is scattered and arranged at the top of the tower top is better, attractive space back-twisted cable shapes can be formed between the two bank side spans and the inclined bridge tower, and the novel bridge tower is particularly suitable for the short edge span of the inclined bridge tower to span a cable-stayed bridge.
The technical scheme is as follows: the invention discloses a short-side span cable-stayed bridge structure of a steel tube concrete egg-shaped curved arch bridge tower, which comprises a bridge tower foundation, the steel tube concrete egg-shaped curved arch bridge tower, a space inclined stay cable net, a cable-stayed back-twisted cable net, a bridge deck stiffening girder, a bridge tower arch foot connecting beam and a cable-stayed bridge side pier, and is characterized in that: about two steel pipe concrete egg curve arch pylons that lean out set up on the basis that the short side strides the cable-stay bridge, the upper end dispersion anchor of the oblique cable-stay cable net in space is in the inboard of steel pipe concrete egg curve arch pylon vault, the upper end dispersion anchor of cable-stay back cable net twists the back in the cable-stay cable net to one side is in the outside of steel pipe concrete egg curve arch pylon vault, the bridge floor stiffening beam passes the entrance to a cave of two steel pipe concrete egg curve arch pylons of controlling the slope, the beam section supporting of middle bridge floor stiffening beam is on controlling two pylon arch foot tie beams, the both ends supporting of bridge floor stiffening beam is on controlling two cable-stay bridge side piers, the middle beam-span section of bridge floor stiffening beam is dragged to the lower extreme cable-stay back cable net that inclines in space, the lower extreme cable-stay back cable net pulls the side-span beam section of bridge floor stiffening beam in a cable-stay.
The concrete filled steel tube egg curve arch bridge tower is characterized in that a geometric centroid curve of the concrete filled steel tube egg curve arch bridge tower is an egg-shaped curve, arch legs are folded, the top is wide, the concrete filled steel tube egg curve arch bridge tower is formed by welding smoothly-connected multi-section variable-section curved steel tubes, the diameter of a steel tube at the top is small, the diameter of a steel tube at the bottom is large, the variable-section egg curved steel tube is arranged outside the concrete filled steel tube egg curve arch bridge tower, and high-strength concrete materials are densely filled in the steel tube concrete egg curve arch bridge tower.
The cable-stayed back-twisted cable net is dispersedly arranged between the two bank side spans of the short-side span cable-stayed bridge and the inclined steel tube concrete egg-shaped curved arch bridge tower, among the cable-stayed back-twisted cable nets, the upper ends of the stay cables of the lower end anchored at the outermost side of the side span are anchored and connected to the lowest part of the steel tube concrete egg-shaped curved arch bridge tower, the upper ends of the stay cables of the innermost side span are anchored and connected to the highest part of the steel tube concrete egg-shaped curved arch bridge tower, the stay cables of the rest cable-stayed back-twisted cable nets are arranged in an inserted mode, and the cable-stayed back-twisted cable net is in a twisted shape.
The invention discloses a construction method of a short-side span cable-stayed bridge structure of a steel tube concrete egg-shaped curve arch bridge tower, which is characterized by comprising the following steps of:
the first step is as follows: according to the requirements of geological topography and landform conditions, carrying out bridge position site selection of the short-side span cable-stayed bridge, and constructing a bridge tower foundation and a cable-stayed bridge side pier;
the second step is that: according to an egg-shaped curve equation, a firer bending manufacturing process is adopted, variable-section steel pipe segments are bent, transported to a construction site, welded, assembled and molded, egg-shaped curve steel pipe arch ribs are hoisted in place, and the egg-shaped curve steel pipe arch ribs are fixed by a temporary support frame;
the third step: pouring high-strength concrete into the steel tubes of the egg-shaped curved steel tube arch ribs to form a steel tube concrete egg-shaped curved arch bridge tower, and mounting bridge tower arch foot connecting beams at arch feet;
the fourth step: the cable net and the cable-stayed back-twisted cable net are obliquely pulled in the top suspension space of the steel tube concrete egg-curve arch bridge tower, and the bridge deck stiffening beam is installed by adopting a cantilever construction method until the bridge deck stiffening beam is folded
The fifth step: demolish interim support frame, installation railing and street lamp carry out the bridge floor and pave, and the short side that forms concrete filled steel tube egg curve arch pylon strides cable-stay bridge, operates the use.
The egg-shaped curve is an important mathematical geometric curve, the egg curve is a well-balanced smooth curve applied to mathematics, drawing and art, and the duck egg is attractive.
Until now, mathematic equations for egg curves were not found by mathematic scientists, and eventually solved the dilemma of egg curve mapping for generations. Nowadays, cars, airships, bridges, tunnels, gymnasiums, concert halls and other buildings shaped like eggs are seen all over the world, which perfectly achieve a combination of science and culture, science and art, science and aesthetics.
Compare in the sharp steel pipe concrete parabola arch bridge tower of top of the tower, the structural performance of the arch bridge tower bearing force of steel pipe concrete egg curve is more reasonable, and the bridge tower molding is unique graceful, and its arch foot draws in, has reduced the basis size, and its top is wide, and the space suspension cable is dispersed and is arranged, and the view effect is better.
The mathematical equation for the egg-shaped curve is as follows:
in the formula: x and y are coordinate axis dimensions
a is an egg width parameter; b is the egg height parameter
k is an egg shape parameter
The variable cross-section concrete filled steel tube egg-curve arched bridge tower has the advantages of excellent stress performance, convenience in industrial production and manufacture, rapidness in field assembly and construction, beautiful shape, simple structure, convenience in construction, large spanning capability, good wind resistance stability and the like, and is particularly suitable for urban landscape cable-stayed bridge structures.
Has the advantages that: compared with the prior art, the invention has the following advantages:
the traditional portal bridge tower cable-stayed bridge structure is simple in structure and convenient to construct, but the structure is not attractive, and the landscape effect of the cable-stayed bridge is influenced.
The existing parabola arch bridge tower cable-stayed bridge has a more beautiful structural shape, but the parabola arch curve has the geometrical characteristics of too large bending distance of arch feet and high and sharp shape of an arch crown part, so that the parabola arch structure has some defects more or less.
The distance between two arch legs of the parabola arch-shaped bridge tower structure is too large, the two legs are not folded, the connecting beam span for supporting the bridge deck stiffening beam at the arch foot support is increased, and the foundation area is increased.
The top of the tower of the parabola arch bridge tower structure is high and sharp, and the spatial cable-stayed nets at the top of the tower are arranged too intensively and cannot be effectively dispersed and dispersed, so that the landscape effect of the spatial cable-stayed nets is not prominent, and the landscape effect of the parabola arch bridge tower cable-stayed bridge is influenced.
Aiming at the defects of the cable-stayed bridge structure of the parabola arch bridge tower, the structure is improved into a steel pipe concrete egg curve arch bridge tower structure according to an egg curve equation, the shape of the egg curve arch bridge tower is very beautiful, the top of the egg curve arch bridge tower is wide, a space cable-stayed cable arranged at the wide top can be perfectly dispersed, the landscape effect is very obvious, and compared with the parabola arch bridge tower cable-stayed bridge, the landscape performance of the space cable net of the steel pipe concrete egg curve arch bridge tower is better.
Two arch legs of the egg-shaped curve arch bridge tower are folded, and compared with a parabolic arch bridge and a cable-stayed bridge, the steel tube concrete egg-shaped curve arch bridge tower reduces the span of a supporting connecting beam at the arch foot support, and simultaneously effectively reduces the foundation area.
In a prefabrication processing factory, according to an egg-shaped curve equation, a firer bending manufacturing process is adopted, a bent variable cross-section steel pipe forms a duck egg-shaped variable cross-section steel pipe arch, welding, assembling and forming are carried out on a construction site, the steel pipe is hoisted in place, high-strength concrete is poured into the steel pipe, a space inclined pull cable net is installed on a tower body, a bridge deck stiffening beam is dragged by the space inclined pull cable net, and a short-side span cable-stayed bridge structure of the steel pipe concrete egg-shaped curve arch bridge tower is formed, so that construction is convenient.
At present, because the urban land is tense, the urban landscape cable-stayed bridge usually adopts a short-edge-span cable-stayed bridge structural arrangement form, in order to balance the left-right unbalanced tension of a cable-stayed bridge tower structure, the short-edge-span cable-stayed bridge needs to adopt an inclined bridge tower structural form, even adopts an inclined non-back-cable-stayed bridge tower form, the construction template of the traditional reinforced concrete door-type inclined bridge tower is difficult to manufacture, the egg curve arch steel pipe bridge tower prefabricated in a factory can be quickly hoisted in place, high-strength concrete is poured into the egg curve arch steel pipe bridge tower, the complicated template construction of the concrete bridge tower is avoided, the steel pipe concrete egg curve arch inclined bridge tower is formed, and the construction is quick.
Because the top of the steel tube concrete egg curve arch-shaped inclined bridge tower is wide, a space back twisting cable formed between the side span of the short-side span cable-stayed bridge and the inclined bridge tower is full in shape, the three-dimensional sculpture feeling is strong, and the landscape effect is obvious.
Compared with the parabolic arch bridge tower, the egg-shaped curve arch bridge tower has better capability of bearing radial pressure and more reasonable structural stress performance.
Adopt variable cross section egg curve arch bridge tower structure, the cross sectional dimension of increase bridge tower structure bottom can improve the bending resistance to compression bearing capacity of egg curve arch bridge tower structure, simultaneously, can reduce the structure focus, improves structural stability.
The egg-shaped curve arch bridge tower adopts a steel pipe concrete arch structure, the structure has strong bearing capacity and good anti-seismic performance ductility, so that the space cable-stayed bridge of the steel pipe concrete egg-shaped curve arch bridge tower has the advantage of large spanning capacity.
The top of the egg-shaped curve arch bridge tower is wide, the scattering space cable-stayed cable network cable-stayed bridge has better space rigidity, the torsion frequency and the torsion frequency ratio of the ultra-large span cable-stayed bridge are improved, and therefore the space cable-stayed bridge of the concrete filled steel tube egg-shaped curve arch bridge tower has good flutter wind-resistant stability.
According to an egg-shaped curve equation, a firer bending manufacturing process is adopted, variable cross-section steel pipe sections are bent, welded, assembled and formed, high-strength concrete is poured into the steel pipes to form a steel pipe concrete egg-shaped curve arch bridge tower structure, two legs of the egg-shaped curve arch bridge tower are folded, the top is wide and attractive in appearance, the landscape effect of three-dimensional space cable ropes distributed on the top of the egg-shaped curve arch bridge tower is better, a very beautiful space back-twisting rope model can be formed between the two bank spans of the short-side span cable-stayed bridge and the inclined bridge tower, the inclined concrete-filled steel tube egg-shaped curve arched bridge tower, the short-side span cable-stayed bridge capable of building the steel pipe concrete egg-shaped curved arch bridge tower has the advantages of attractive appearance, simple structure, convenience in construction, high spanning capability, good wind resistance stability and the like, is particularly suitable for urban landscape cable-stayed bridge structural engineering with ultra-large span, and can further improve the landscape grade of the urban cable-stayed bridge structure.
Drawings
FIG. 1 is a three-dimensional schematic view of a short-side span cable-stayed bridge structure of a concrete filled steel tube egg-shaped curved arch bridge tower;
fig. 2 is a schematic of the geometry of an egg curve.
The figure shows that: a bridge tower foundation 1; a steel tube concrete egg-shaped curve arch bridge tower 2; a spatial diagonal cable network 3; a cable-stayed back cable net 4; a deck stiffening girder 5; a bridge tower arch foot connecting beam 6; side piers 7 of cable-stayed bridges.
Detailed Description
The present invention will be further specifically described with reference to the accompanying drawings.
Example 1:
the invention discloses a short-side span cable-stayed bridge structure of a concrete filled steel tube egg-shaped curved arch bridge tower, which comprises a bridge tower foundation 1, a concrete filled steel tube egg-shaped curved arch bridge tower 2, a space inclined stay cable net 3, a cable-stayed back cable net 4, a bridge deck stiffening beam 5, a bridge tower arch foot connecting beam 6 and a cable-stayed bridge side pier 7, and is characterized in that: about two steel pipe concrete egg curve arch bridge towers 2 that lean out set up on the basis 1 of short side span cable-stay bridge, the upper end dispersion anchor of space cable-stay cable net 3 is in the inboard of steel pipe concrete egg curve arch bridge tower 2 vault, the upper end dispersion anchor of cable-stay back cable net 4 is in the outside of steel pipe concrete egg curve arch bridge tower 2 vault, bridge floor stiffening girder 5 passes about the entrance to a cave of two steel pipe concrete egg curve arch bridge towers 2 of slope, the beam section bearing of middle bridge floor stiffening girder 5 is about two bridge tower hunch foot tie-beams 6 on, the both ends bearing of bridge floor stiffening girder 5 is about two cable-stay bridge side mounds 7 on, the middle beam section of bridge floor stiffening girder 5 is dragged to the lower extreme cable-stay of space cable-stay cable net 3, the lower extreme cable-stay of cable-stay back cable net 4 drags the side beam section of stiffening girder 5 to one side.
The geometrical centroid curve of the steel tube concrete egg curve arch bridge tower 2 is an egg-shaped curve, arch legs are folded, the top is wide, the steel tube concrete egg curve arch bridge tower 2 is formed by welding a plurality of sections of smoothly connected variable cross-section curve steel tubes, the diameter of a steel tube at the top is small, the diameter of a steel tube at the bottom is large, the outer part of the steel tube concrete egg curve arch bridge tower 2 is a variable cross-section egg curve steel tube, and high-strength concrete materials are densely filled in the steel tube concrete egg curve arch bridge tower.
The cable-stayed back cable net 4 is dispersedly arranged between the short-side span of the cable-stayed bridge and the inclined steel tube concrete egg curve arch bridge tower 2, among the cable-stayed back cable net 4, the upper end of a cable-stayed cable anchored at the outermost side of the side span is connected to the lowest part of the steel tube concrete egg curve arch bridge tower 2, the upper end of a cable-stayed cable anchored at the innermost side span is connected to the highest part of the steel tube concrete egg curve arch bridge tower 2, the cable-stayed cables of the rest cable-stayed back cable nets 4 are inserted and arranged, and the cable-stayed back cable net 4 is in a twisted shape.
Example 2:
the invention relates to a construction method of a short-side span cable-stayed bridge structure of a steel tube concrete egg-shaped curve arch bridge tower, which comprises the following steps:
the first step is as follows: according to the requirements of geological topography and landform conditions, bridge position site selection of the short-side span cable-stayed bridge is carried out, and a bridge tower foundation 1 and a cable-stayed bridge side pier 7 are constructed;
the second step is that: according to an egg-shaped curve equation, a firer bending manufacturing process is adopted, variable-section steel pipe segments are bent, transported to a construction site, welded, assembled and molded, egg-shaped curve steel pipe arch ribs are hoisted in place, and the egg-shaped curve steel pipe arch ribs are fixed by a temporary support frame;
the third step: high-strength concrete is poured into steel tubes of the egg-shaped curved steel tube arch ribs to form a steel tube concrete egg-shaped curved arch bridge tower 2, and a bridge tower arch foot connecting beam 6 is installed at an arch foot;
the fourth step: the top of the steel tube concrete egg-shaped curved arch bridge tower 2 is suspended with a cable-stayed cable net 3 and a cable-stayed back-twisted cable net 4, and a bridge deck stiffening girder 5 is installed by adopting a cantilever construction method until the top is closed
The fifth step: demolish interim support frame, installation railing and street lamp carry out the bridge floor and pave, and the short side that forms concrete filled steel tube egg curve arch pylon strides cable-stay bridge, operates the use.
Example 3:
the main span diameter of a three-span urban landscape cable-stayed bridge is 100+300+100m, the bridge deck width is 33m, and six bidirectional lanes are adopted.
The central line of the steel tube concrete egg curve arch bridge tower accords with an egg curve geometric equation, wherein: the egg width parameter a is 40 meters, the egg width parameter b is 60 meters, and the egg shape parameter k is 0.3.
The vertical height of the steel tube concrete egg-shaped curve arch bridge tower is 108 meters, the slant height is 120 meters, the inclination angle of the bridge tower is 25 degrees, the egg-shaped curve arch bridge tower is of a steel tube concrete structure, the diameter of a variable cross-section steel tube is 6-10 meters, the wall thickness of the steel tube is 25-30 mm, C50 concrete is poured in the steel tube concrete arch bridge tower, and a pile foundation is adopted by the egg-shaped curve arch bridge tower.
The bridge tower arch foot connecting beam adopts a combined beam structure form of a circular steel pipe concrete beam and a groove-shaped capping beam, the diameter of the circular steel pipe concrete beam is 8 meters, and the tower beam adopts a semi-fixed structural scheme.
The bridge floor stiffening beam adopts flat steel box girder structure, and flat steel box girder height is 3 meters, sets up the iron ore sediment counter weight of 1 meter height in striding flat steel box girder on both sides.
The cable spacing of the cable-stayed bridge is 20 meters, 1860MPa high-strength parallel steel wire cables are adopted, 14 pairs of stay cables are arranged on the intermediate bridge in a collapse mode, 5 pairs of stay twisted back cables are arranged on the left side span and the right side span, the stretching ends of the stay cables are arranged at the beam ends, the beam ends are of a steel anchor box structure, and the diameter of the stay cable is 0.25 meter.
And (3) installing metal railings, paving the asphalt concrete on the bridge deck, installing a street lamp, and forming a short-side span cable-stayed bridge of the large-span concrete filled steel tube egg-shaped curve arch bridge tower.
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 cable-stay bridge structure is striden to minor face of concrete filled steel tube egg curve arch pylon, includes concrete filled steel tube egg curve arch pylon (2), oblique cable pulling cable net (3) in space and twists back of the body cable net (4) to one side, its characterized in that: left and right two steel pipe concrete egg curve arch bridge towers (2) inclined outwards are arranged on the foundation (1) of a short-side span cable-stayed bridge, the upper ends of the spatial inclined stay cable nets (3) are dispersedly anchored on the inner sides of the arch tops of the steel pipe concrete egg curve arch bridge towers (2), the upper ends of the inclined stay cable nets (4) are dispersedly anchored on the outer sides of the arch tops of the steel pipe concrete egg curve arch bridge towers (2), the bridge deck stiffening beam (5) penetrates through the portal of the left and right inclined steel pipe concrete egg curve arch bridge towers (2), the beam section of the middle bridge deck stiffening beam (5) is supported on the left and right two bridge tower arch foot connecting beams (6), the two ends of the bridge deck stiffening beam (5) are supported on the left and right two side piers (7) of the cable-stayed bridge, the middle cross beam section of the stiffening beam (5) is dragged by the lower ends of the spatial inclined stay cable nets (3), and the lower ends of the inclined stay cable back cable nets (4) drag the stiffening side beam section of the cable-stayed bridge.
2. The short-side span cable-stayed bridge structure of the steel tube concrete egg-shaped curved arch bridge tower according to claim 1, characterized in that: the geometric center curve of the steel pipe concrete egg curve arch bridge tower (2) is an egg-shaped curve, arch legs are folded, the top is wide, the steel pipe concrete egg curve arch bridge tower (2) is formed by welding a plurality of sections of smoothly connected variable cross section curved steel pipes, the diameter of a steel pipe at the top is small, the diameter of a steel pipe at the bottom is large, the outer part of the steel pipe concrete egg curve arch bridge tower (2) is a variable cross section egg curved steel pipe, and high-strength concrete materials are densely filled in the steel pipe concrete egg curve arch bridge tower.
3. The short-side span cable-stayed bridge structure of the steel tube concrete egg-shaped curved arch bridge tower according to claim 1, characterized in that: the cable-stayed back cable net (4) is dispersedly arranged between the two bank side spans of the short-side span cable-stayed bridge and the inclined steel tube concrete egg curve arch bridge tower (2), in the cable-stayed back cable net (4), the upper end of a stay cable of which the lower end is anchored at the outermost side of the side span is connected to the lowest part of the steel tube concrete egg curve arch bridge tower (2), the upper end of a stay cable of which the lower end is anchored at the innermost side span is connected to the highest part of the steel tube concrete egg curve arch bridge tower (2), the stay cables of the rest cable-stayed back cable nets (4) are inserted and arranged, and the cable-stayed back cable net (4) is in a twisted shape.
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| CN202022249681.9U CN213804829U (en) | 2020-10-10 | 2020-10-10 | Short-side span cable-stayed bridge structure of steel pipe concrete egg-shaped curve arch bridge tower |
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