CN113652946A - Curved beam space arch combined system foot bridge - Google Patents
Curved beam space arch combined system foot bridge Download PDFInfo
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- CN113652946A CN113652946A CN202110961158.5A CN202110961158A CN113652946A CN 113652946 A CN113652946 A CN 113652946A CN 202110961158 A CN202110961158 A CN 202110961158A CN 113652946 A CN113652946 A CN 113652946A
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- arch rib
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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
- E01D4/00—Arch-type 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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/268—Composite concrete-metal
Abstract
The invention discloses a curved beam space arch combined pedestrian bridge, which comprises an arch rib main body, a main beam main body and a plurality of suspenders, wherein the arch rib main body is in a space inclined arch shape, the main beam main body is in a curved beam structure, two ends of the arch rib main body are respectively fixedly connected with two ends of the main beam main body to form arch beam fixing points, the two arch beam fixing points divide the arch rib main body into an upper arch rib and two lower arch ribs which are respectively arranged at two ends of the upper arch rib, the two arch beam fixing points divide the main beam main body into a midspan main beam and two side-span main beams which are respectively arranged at two ends of the midspan main beam, and the curve projection direction of the midspan main beam projected on a horizontal plane is opposite to the curve projection direction of the upper arch rib projected on the horizontal plane; a plurality of jibs equipartition is between midspan girder and the last rib. When the bridge is built, the two lower arch ribs are connected with an external cushion cap, and the two side span main beams are supported on a pier or a ground foundation, so that the pedestrian bridge structure forms opposite tension stress, and the stability of the structure is improved.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a curved beam space arch combined pedestrian bridge.
Background
With the economic progress, the existing bridge not only needs to meet the passing function, but also considers the aesthetic feeling of buildings, the urban pedestrian bridge is more various in form, the pursuit of aesthetics is emphasized on the basis of meeting the functionality, the structure always pursues light and new, the development of the pedestrian bridge to soft, large-span and space structure is promoted by the mature technology and the improvement of social requirements. The arch rib combination pedestrian bridge is a novel structure with inclined arch ribs and curved main beam plane, and has smooth structure appearance with modern sense, the main beam in the traditional curved beam inclined arch bridge usually adopts a single curve, the appearance is monotonous, and only one main beam end access opening is arranged, so that the passing function of the bridge is reduced, in addition, the curved beam inclined arch bridge is of a special-shaped structure, so that the system stress is difficult to design, the pedestrian vibration control is difficult, and the wind resistance and the shock resistance are weak.
Disclosure of Invention
The invention aims to provide a curved beam space arch combined system pedestrian bridge, which is used for solving one or more technical problems in the prior art and at least providing a beneficial selection or creation condition.
The technical scheme adopted for solving the technical problems is as follows:
the invention provides a curved beam space arch combination pedestrian bridge, which comprises an arch rib main body, a main beam main body and a plurality of suspenders, wherein the arch rib main body is in a space inclined arch shape, the main beam main body is in a curved beam structure, the two ends of the arch rib main body are respectively fixedly connected with the two ends of the main beam main body to form arch beam fixing points, the two arch beam fixing points divide the arch rib main body into an upper arch rib and two lower arch ribs which are respectively arranged at the two ends of the upper arch rib, the two arch beam fixing points divide the main beam main body into a midspan main beam and two side-span main beams which are respectively arranged at the two ends of the midspan main beam, the projection direction of the curve of the midspan girder on the horizontal plane is opposite to the projection direction of the curve of the upper arch rib on the horizontal plane, the side span main beam is arranged into a branched structure, and a branch point of the branched structure is positioned on the outer side of the arch beam fixing point; the plurality of suspenders are uniformly distributed between the midspan main beam and the upper arch rib, each suspender is provided with an upper end anchor and a lower end anchor, the upper end anchors are connected with the upper arch ribs, and the lower end anchors are connected with the midspan main beam.
The invention has the beneficial effects that: during construction, two lower arch ribs are connected with an external cushion cap, two side-span main beams are supported on a pier or a ground foundation, two ends of the arch rib main bodies are fixedly connected with two ends of the main beam main bodies respectively to form arch beam fixing points, the curve projection direction of the mid-span main beam in horizontal plane projection is opposite to the curve projection direction of the upper arch rib in horizontal plane projection, and the upper arch ribs are connected with the mid-span main beam through a plurality of hanging rods to fix the mid-span main beam, so that the pedestrian bridge structure forms opposite tension stress, and the stability of the structure is improved. And the end part of the bifurcation structure in the scheme is supported on a pier or a ground foundation, so that the structural stability is improved, and the passing function of the bridge is enhanced.
As a further improvement of the above technical solution, on the cross section of the mid-span girder, the girder main body includes at least two main girder bodies arranged at a lateral interval, and a cross girder body connected between two adjacent main girder bodies, the horizontal heights of the top surfaces of the at least two main girder bodies are all different, so as to form a stacked high-low deck structure, and the at least two main girder bodies are bent in the area of the arch girder consolidation point to form the bifurcation structure.
The height difference of the top surfaces of at least two main beam bodies on the midspan main beam forms a laminated high-low bridge deck structure, flower ponds, stand platforms and upper and lower passing spaces are ingeniously arranged, the passing and viewing requirements of various pedestrians are met on the premise of meeting the landscape, and the bridge deck space texture with bright contrast is formed.
As a further improvement of the above technical solution, the main beam body includes a main beam top plate, a main beam bottom plate, and a plurality of main beam cross partitions, the main beam top plate and the main beam bottom plate are arranged up and down, and the plurality of main beam cross partitions are fixed between the main beam top plate and the main beam bottom plate at intervals along the extending direction of the main beam body;
the crossbeam body includes crossbeam roof, crossbeam bottom plate, a plurality of crossbeam cross slab, crossbeam roof, crossbeam bottom plate are setting from top to bottom, the both sides limit of crossbeam roof is connected with two adjacent girder roof respectively, the both sides limit of crossbeam bottom plate is connected with two adjacent girder bottom plates respectively, a plurality of crossbeam cross slabs follow the direction that the girder main part extends is the interval and is fixed in between crossbeam roof and the crossbeam bottom plate.
The girder main part in this scheme adopts the box cross-section in order to obtain better antitorque performance.
As a further improvement of the above technical scheme, the outer side surface of the top plate of the cross beam is connected with a plurality of overhanging plates, the lower end anchor is connected with the overhanging plates, and beam through holes are formed in the cross beam diaphragm and the main beam diaphragm. The beam through hole in the scheme is mainly convenient to overhaul and install equipment, and the outward extending plate can improve the firmness of connection of the lower end anchor.
As a further improvement of the above technical solution, the beam body further includes a plurality of beam webs fixed between the beam top plate and the beam bottom plate, the beam webs extend along the direction in which the main beam body extends, and the beam webs are disposed between two adjacent beam diaphragms;
the main beam body also comprises a plurality of main beam webs fixed between the main beam top plate and the main beam bottom plate, the main beam webs extend along the extending direction of the main beam main body, and the main beam webs are arranged between every two adjacent main beam diaphragm plates;
the main beam webs on the outer sides of the main beam bodies on the two sides are obliquely arranged and are connected with cantilever arms, and the use area of the bridge deck can be enlarged due to the arrangement of the cantilever arms.
And beam stiffening ribs are arranged on the inner side surfaces of the beam top plate, the beam bottom plate, the main beam top plate and the main beam bottom plate. The beam stiffeners may further improve the structural strength of the main beam body.
As a further improvement of the above technical solution, the arch rib main body includes an arch rib top plate, an arch rib bottom plate, and a plurality of arch rib diaphragms fixed between the arch rib top plate and the arch rib top plate at intervals along a direction in which the arch rib main body extends, the arch rib diaphragms are provided with arch rib through holes, and the upper end anchors are connected with an outer side surface of the arch rib bottom plate through spherical joint bearings.
The arch rib main part in this scheme adopts the steel construction, has stronger structural strength, and the adaptable overall structure's of spherical joint bearing space warp.
As a further improvement of the above technical solution, the arch rib main body further includes two outer arch rib webs and a plurality of inner arch rib webs, the arch rib top plate, one of the outer arch rib webs, the arch rib bottom plate, and the other outer arch rib web are sequentially connected to form an arch rib main body having a flat cross section, the inner arch rib webs are disposed in a closed space formed by the two outer arch rib webs, the arch rib bottom plate, and the arch rib top plate, and the inner arch rib webs are simultaneously connected with the arch rib bottom plate, the arch rib top plate, and two adjacent arch rib diaphragms; the arch rib main body with the flat cross section can adapt to the transverse bridge stress of the arch rib main body, simultaneously reduce the horizontal thrust of the arch springing, at the moment, the widths of the arch rib top plate and the arch rib bottom plate can be increased, and the heights of the arch rib outer web and the arch rib inner web are reduced.
And arch rib stiffening ribs are arranged on the inner side surfaces of the outer web plate of the arch rib, the top plate of the arch rib and the bottom plate of the arch rib.
As a further improvement of the technical scheme, two arch rib inner webs are arranged between the connection of two adjacent arch rib diaphragm plates, the two arch rib inner webs divide the section of the arch rib main body into a central bin and side bins which are respectively arranged at two sides of the central bin, and the side bins are filled with concrete, so that the rigidity of the arch rib main body can be improved, and the natural vibration frequency of the structure can be improved.
The outer side of the lower arch rib is provided with a plurality of studs and is wrapped with concrete, so that the ship collision resistance of the arch rib main body is enhanced, and the corrosion prevention problem of steel structures in underwater and splash areas is solved.
As a further improvement of the above technical solution, a viewing system is disposed inside a curve of the mid-span main beam, the viewing system includes a channel, a cantilever platform, and a tie bar, the cantilever platform is located on a connection line of two arch beam fastening points, the channel connects the mid-span main beam and the cantilever platform, and the tie bar is disposed between the arch beam fastening points and the cantilever platform. The scheme sets the using function of the viewing system capable of increasing the bridge.
Drawings
The invention is further described with reference to the accompanying drawings and examples;
FIG. 1 is a side view of one embodiment of a curved beam space arch composite system footbridge provided in accordance with the present invention;
FIG. 2 is a top view of one embodiment of a curved beam space arch composite system footbridge provided in accordance with the present invention;
FIG. 3 is a cross-sectional view of a curved beam space arch composite pedestrian bridge according to an embodiment of the present invention, wherein the cross-section of the outer web of the arch rib is curved;
fig. 4 is a cross-sectional view of a double girder with a zigzag cross-section of an outer web of a rib of a curved beam space arch composite system pedestrian bridge according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are described, the meaning is one or more, the meaning of a plurality is two or more, more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 4, the following embodiments are made of the curved beam space arch composite pedestrian bridge of the present invention:
the curved beam space arch combination pedestrian bridge in the embodiment comprises a rib main body 100, a main beam main body 200 and a plurality of suspension rods 400.
Wherein the arch rib main body 100 is arched along the front-back direction and tilted towards the left to form a spatial inclined arch shape, and the girder main body 200 is arched in both side view and top view to form a curved beam structure, both ends of the arch rib main body 100 are fixedly connected with both ends of the girder main body 200 respectively and form arch beam fixing points 300, the two arch beam fixing points 300 divide the arch rib main body 100 into an upper arch rib 110, two lower arch ribs 120 respectively disposed at both ends of the upper arch rib 110, the two arch beam fixing points 300 divide the girder main body 200 into a mid-span girder 210 and two side-span girders 220 respectively disposed at both ends of the mid-span girder 210, a curve projection direction of the girder 210 in a horizontal plane is opposite to a curve projection direction of the upper arch rib 110 in a horizontal plane, wherein the side-span girder 220 is disposed in a bifurcated structure, and a bifurcation point of the bifurcated structure is located outside the arch beam fixing points 300, during construction, the ends of the bifurcating structure are supported on piers or ground foundations, thereby increasing structural stability and enhancing the passing function of the bridge, and the two lower arch ribs 120 are connected to the outer decks.
A plurality of jibs 400 equipartition are in between midspan girder 210 and the last rib 110, jib 400 is provided with upper end anchor and lower extreme anchor, the upper end anchor with last rib 110 is connected, the lower extreme anchor with midspan girder 210 is connected, and centering is striden girder 210 and is fixed, makes the footbridge structure form and to drawing the atress, has increased the stability of structure, makes the footbridge more pleasing to the eye.
Further, on the cross section of the mid-span girder 210, the girder main body 200 includes at least two main girder bodies 230 arranged at a transverse interval, and a cross girder body 240 connected between two adjacent main girder bodies 230, the horizontal heights of the top surfaces of the at least two main girder bodies 230 are all different, so as to form a stacked high-low bridge deck structure, the at least two main girder bodies 230 are bent in the area of the arch girder fixing point 300 to form the branched structure, in this embodiment, the two main girder bodies 230 are arranged, the height difference of the top surfaces of the two main girder bodies 230 on the mid-span girder 210 forms the stacked high-low bridge deck structure, so as to skillfully arrange flower ponds, stands and upper and lower passage spaces, thereby providing the passage and viewing requirements of various pedestrians on the premise of satisfying the landscape, and forming a clearly-contrastive bridge deck space texture.
Specifically, the method comprises the following steps: the girder body 230 includes girder roof 231, girder bottom plate 232, a plurality of girder diaphragms 233, girder roof 231 and girder bottom plate 232 set up from top to bottom, and a plurality of girder diaphragms 233 follow the direction that girder main part 200 extends is that the interval is fixed in between girder roof 231 and the girder bottom plate 232, the girder body 240 includes crossbeam roof 241, crossbeam bottom plate 242, a plurality of crossbeam diaphragms 243, crossbeam roof 241, crossbeam bottom plate 242 set up from top to bottom, the both sides limit of crossbeam roof 241 is connected with two adjacent girder roofs 231 respectively, the both sides limit of crossbeam bottom plate 242 is connected with two adjacent girder bottom plates 232 respectively, and a plurality of crossbeam diaphragms 243 are followed the direction that girder main part 200 extends is that the interval is fixed in between crossbeam roof 241 and the crossbeam bottom plate 242. The main beam body 200 in this embodiment has a box-shaped cross section to achieve better torsion resistance.
The beam body 240 further includes a plurality of beam webs 246 fixed between the beam top plate 241 and the beam bottom plate 242, the beam webs 246 extend along the direction in which the main beam body 200 extends, and the beam webs 246 are disposed between two adjacent beam diaphragms 243;
the main beam body 230 further includes a plurality of main beam webs 234 fixed between the main beam top plate 231 and the main beam bottom plate 232, the main beam webs 234 extend along the extending direction of the main beam main body 200, and the main beam webs 234 are disposed between two adjacent main beam diaphragms 233.
As shown in fig. 3, the beam bottom plate 242 and the main beam bottom plate 232 are of a horizontal integrated structure, and a high-low bridge deck is formed by the high-low arrangement of the main beam web 234 and the beam web 246, and the main beam body 200 is of a single-box multi-chamber cross section, that is, a single main beam structure.
As shown in fig. 4, the two girder bodies 230 have different overall elevations, and the two girder bodies 230 are arranged in a streamline shape on a plane to form a double girder structure.
In other embodiments, equal height beams or height beams are set according to the stress and the shape requirement, that is, the beam heights of the main beam body 230 are the same or different.
In addition, a plurality of overhanging plates 244 are connected to the outer side surface of the beam top plate 241, the lower end anchor is connected to the overhanging plates 244, and beam through holes 245 are formed in both the beam diaphragm 243 and the main beam diaphragm 233. The beam through hole 245 in the scheme is mainly convenient for maintenance and equipment installation, and the outward extending plate 244 can improve the firmness of the lower end anchor connection. And beam stiffening ribs 250 are arranged on the inner side surfaces of the beam top plate 241, the beam bottom plate 242, the main beam top plate 231 and the main beam bottom plate 232. The beam stiffeners 250 may further improve the structural strength of the main beam body 200.
The arch rib main body 100 comprises an arch rib top plate 140, an arch rib bottom plate 150 and a plurality of arch rib transverse partition plates 160, the arch rib transverse partition plates 160 are fixed between the arch rib top plate 140 and the arch rib top plate 140 at intervals along the extending direction of the arch rib main body 100, the arch rib transverse partition plates 160 are provided with arch rib through holes 161, the upper end anchors are connected with the outer side face of the arch rib bottom plate 150 through spherical joint bearings, the arch rib main body 100 is made of a steel structure and has strong structural strength, and the spherical joint bearings can adapt to the spatial deformation of the whole structure.
Further, the arch rib main body 100 further comprises two arch rib outer webs 170 and a plurality of arch rib inner webs 180, the arch rib top plate 140, one of the arch rib outer webs 170, the arch rib bottom plate 150 and the other arch rib outer web 170 are sequentially connected to form the arch rib main body 100 with a flat cross section, the arch rib inner webs 180 are arranged in a closed space formed by the two arch rib outer webs 170, the arch rib bottom plate 150 and the arch rib top plate 140, and the arch rib inner webs 180 are simultaneously connected with the arch rib bottom plate 150, the arch rib top plate 140 and the two adjacent arch rib diaphragm plates 160; the rib main body 100 with a flat cross section can adapt to the transverse bridge direction stress of the rib main body 100, simultaneously reduce the horizontal thrust of the arch springing, at the moment, the widths of the rib top plate 140 and the rib bottom plate 150 can be increased, and the heights of the rib outer web 170 and the rib inner web 180 are reduced. Wherein the rib outer web 170 may be configured to be dogleg or curved in cross-section and the rib inner web 180 is a straight plate. Rib stiffeners 130 are provided on the inner surfaces of the rib outer web 170, the rib top plate 140, and the rib bottom plate 150.
In this embodiment, two inner webs 180 of the arch rib are arranged between two adjacent transverse partition plates 160 of the arch rib, and the inner webs 180 of the arch rib divide the section of the arch rib main body 100 into a central bin and side bins respectively arranged at two sides of the central bin, and the side bins are filled with concrete with a certain height, so that the rigidity of the arch rib main body 100 can be improved, the natural vibration frequency of the structure can be improved, and the comfort of pedestrians can be improved.
The outer side of the lower arch rib 120 is provided with a plurality of studs, ultra-high performance concrete with a certain thickness is poured, and the lower arch rib 120 adopts a UHPC (ultra high performance concrete) coated steel box concrete combined structure, so that the ship collision resistance of the arch rib main body 100 is enhanced, and the corrosion prevention problem of steel structures in underwater and splash areas is solved.
And, the outer girder webs 234 of the girder 230 on both sides are inclined and connected to the cantilever arms 235.
Furthermore, a viewing system 500 is disposed inside the curve of the mid-span girder 210, the viewing system 500 includes a channel 510, a cantilever platform 520, and a tie bar 530, the cantilever platform 520 is located on the connection line of the two arched girder fastening points 300, the channel 510 connects the mid-span girder 210 and the cantilever platform 520, and the tie bar 530 is disposed between the arched girder fastening points 300 and the cantilever platform 520. The scheme sets the using function of the sightseeing system 500 for increasing the bridge.
The bridge deck of this embodiment is provided in whole or in part as high strength glass.
The construction method of the curved beam space arch combined system pedestrian bridge in the embodiment comprises the following steps:
s1, manufacturing arch rib main bodies 100 and main beam main body 200 sections;
s2, transporting the arch rib main body 100 and the girder main body 200 to the site, hoisting the arch rib main body and the girder main body 200 to a temporary pier, and welding the adjacent arch rib main body 100 and girder main body 200;
s3, constructing a viewing system;
s4, stretching the suspender 400 from two sides to the middle;
and S5, dismantling the temporary pier and constructing the accessory facilities.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.
Claims (9)
1. The utility model provides a bent beam space encircles composite system foot bridge which characterized in that:
a rib body (100) having a spatially inclined arch shape;
the girder main body (200) is of a curved beam structure, two ends of the arch rib main body (100) are respectively fixedly connected with two ends of the girder main body (200) to form arch beam fixing points (300), the two arch beam fixing points (300) divide the arch rib main body (100) into an upper arch rib (110) and two lower arch ribs (120) respectively arranged at two ends of the upper arch rib (110), the two arch beam fixing points (300) divide the girder main body (200) into a midspan girder (210) and two side-span girders (220) respectively arranged at two ends of the midspan girder (210), the projection direction of the curve of the mid-span girder (210) in the horizontal plane is opposite to the projection direction of the curve of the upper arch rib (110) in the horizontal plane, the side span main beam (220) is arranged into a branched structure, and a branching point of the branched structure is positioned on the outer side of the arched beam fixing point (300);
the number of the suspension rods (400) is multiple, the suspension rods (400) are uniformly distributed between the midspan girder (210) and the upper arch rib (110), the suspension rods (400) are provided with upper end anchors and lower end anchors, the upper end anchors are connected with the upper arch rib (110), and the lower end anchors are connected with the midspan girder (210).
2. The walking bridge of curved beam space arch combination system of claim 1, wherein:
on the cross section of the midspan girder (210), the girder main body (200) comprises at least two main girder bodies (230) arranged at a transverse interval and a cross girder body (240) connected between two adjacent main girder bodies (230), the horizontal heights of the top surfaces of the at least two main girder bodies (230) are different, so that a laminated high-low bridge deck structure is formed, and the at least two main girder bodies (230) are bent in the area of the arch girder fixed joint (300) to form the bifurcation structure.
3. The walking bridge of curved beam space arch combination system of claim 2, wherein:
the main beam body (230) comprises a main beam top plate (231), a main beam bottom plate (232) and a plurality of main beam transverse partition plates (233), wherein the main beam top plate (231) and the main beam bottom plate (232) are arranged up and down, and the plurality of main beam transverse partition plates (233) are fixed between the main beam top plate (231) and the main beam bottom plate (232) at intervals along the extending direction of the main beam body (200);
the crossbeam body (240) includes crossbeam roof (241), crossbeam bottom plate (242), a plurality of crossbeam cross slab (243), setting about crossbeam roof (241), crossbeam bottom plate (242) are, the both sides limit of crossbeam roof (241) is connected with two adjacent girder roofs (231) respectively, the both sides limit of crossbeam bottom plate (242) is connected with two adjacent girder bottom plates (232) respectively, and a plurality of crossbeam cross slab (243) are followed the direction that girder main part (200) extend is the interval and is fixed in between crossbeam roof (241) and the crossbeam bottom plate (242).
4. The walking bridge of curved beam space arch combination system of claim 3, wherein:
the outer side face of the beam top plate (241) is connected with a plurality of extending plates (244), the lower end anchor is connected with the extending plates (244), and beam through holes (245) are formed in the beam diaphragm plate (243) and the main beam diaphragm plate (233).
5. The walking bridge of curved beam space arch combination system of claim 3, wherein:
the cross beam body (240) further comprises a plurality of cross beam webs (246) fixed between the cross beam top plate (241) and the cross beam bottom plate (242), the cross beam webs (246) extend along the extending direction of the main beam body (200), and the cross beam webs (246) are arranged between every two adjacent cross beam diaphragm plates (243);
the main beam body (230) further comprises a plurality of main beam webs (234) fixed between the main beam top plate (231) and the main beam bottom plate (232), the main beam webs (234) extend along the extending direction of the main beam main body (200), and the main beam webs (234) are arranged between every two adjacent main beam diaphragm plates (233);
the outer main beam webs (234) on the main beam bodies (230) on two sides are obliquely arranged and connected with cantilever arms (235);
and beam stiffening ribs (250) are arranged on the inner side surfaces of the beam top plate (241), the beam bottom plate (242), the main beam top plate (231) and the main beam bottom plate (232).
6. The walking bridge of curved beam space arch combination system of claim 1, wherein:
the arch rib main part (100) comprises an arch rib top plate (140), an arch rib bottom plate (150) and a plurality of arch rib transverse partition plates (160), wherein the arch rib transverse partition plates (160) are fixed between the arch rib top plate (140) and the arch rib top plate (140) at intervals along the extending direction of the arch rib main part (100), arch rib through holes (161) are formed in the arch rib transverse partition plates (160), and the upper end anchor is connected with the outer side face of the arch rib bottom plate (150) through a spherical joint bearing.
7. The walking bridge of curved beam space arch combination system of claim 6, wherein:
the arch rib main body (100) further comprises two arch rib outer webplates (170) and a plurality of arch rib inner webplates (180), the arch rib top plate (140), one of the arch rib outer webplates (170), the arch rib bottom plate (150) and the other arch rib outer webplate (170) are sequentially connected to form the arch rib main body (100) with a flat cross section, the arch rib inner webplates (180) are arranged in a closed space formed by the two arch rib outer webplates (170), the arch rib bottom plate (150) and the arch rib top plate (140), and the arch rib inner webplates (180) are simultaneously connected with the arch rib bottom plate (150), the arch rib top plate (140) and the two adjacent arch rib transverse partition plates (160);
and arch rib stiffening ribs (130) are arranged on the inner side surfaces of the arch rib outer web (170), the arch rib top plate (140) and the arch rib bottom plate (150).
8. The walking bridge of curved beam space arch combination system of claim 6, wherein:
two web (180) in the arch rib are arranged between two adjacent arch rib diaphragms (160) and are connected, the web (180) in the arch rib divides the section of the arch rib main body (100) into a central bin and side bins which are respectively arranged on two sides of the central bin, the side bins are filled with concrete, and a plurality of studs are arranged on the outer side of the lower arch rib (120) and wrapped with the concrete.
9. The walking bridge of curved beam space arch combination system of claim 1, wherein:
a viewing system (500) is arranged on the inner side of the curve of the midspan girder (210), the viewing system (500) comprises a channel (510), a cantilever platform (520) and a tie bar (530), the cantilever platform (520) is positioned on the connecting line of two arch beam fixed nodes (300), the channel (510) connects the midspan girder (210) and the cantilever platform (520), and the tie bar (530) is arranged between the arch beam fixed nodes (300) and the cantilever platform (520).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110961158.5A CN113652946A (en) | 2021-08-20 | 2021-08-20 | Curved beam space arch combined system foot bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110961158.5A CN113652946A (en) | 2021-08-20 | 2021-08-20 | Curved beam space arch combined system foot bridge |
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| CN113652946A true CN113652946A (en) | 2021-11-16 |
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| CN202110961158.5A Pending CN113652946A (en) | 2021-08-20 | 2021-08-20 | Curved beam space arch combined system foot bridge |
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