CN110761162A - Anti-congestion pedestrian overpass - Google Patents
Anti-congestion pedestrian overpass Download PDFInfo
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- CN110761162A CN110761162A CN201911049889.1A CN201911049889A CN110761162A CN 110761162 A CN110761162 A CN 110761162A CN 201911049889 A CN201911049889 A CN 201911049889A CN 110761162 A CN110761162 A CN 110761162A
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- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D1/00—Bridges in general
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C1/00—Design or layout of roads, e.g. for noise abatement, for gas absorption
- E01C1/02—Crossings, junctions or interconnections between roads on the same level
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Abstract
The invention provides an anti-congestion pedestrian overpass, which comprises: main road, auxiliary road, pedestrian stairs and bridge piers; the main road comprises a first branch main road and a second branch main road, and the first branch main road and the second branch main road are arranged in an orthogonal cross manner; one end of the first branch main road is communicated with two ends of the second branch main road through one auxiliary road respectively, and the other end of the first branch main road is communicated with two ends of the second branch main road through one auxiliary road respectively; two ends of the first branch main road are respectively arranged on one pier, and two ends of the second branch main road are also respectively arranged on one pier; and each end of the first branch main road and each end of the second branch main road are respectively provided with a pedestrian stair. The main road of the invention adopts an orthogonal cross beam structure, and the auxiliary road is added at the shunting point and the confluence point of the main bridge surface to form a plurality of communicated bridge surfaces, thereby greatly ensuring the people flow conveying capacity in a special period.
Description
Technical Field
The invention relates to the technical field of urban anti-congestion pedestrian overpasses, in particular to an anti-congestion pedestrian overpass.
Background
The existing anti-congestion pedestrian overpass is too single in structural form, generally comprises a single main bridge and pedestrian stairs at two ends of the main bridge, the bridge deck width and the under-bridge clearance height of the structure are smaller, crowds walk on the same bridge deck, the crowds are not easy to evacuate quickly during peak periods of the crowds, the congestion phenomenon at the peak periods is very easy to cause, and the existing traffic needs which are rapidly increased are difficult to adapt.
For example, chinese patent with publication number CN208899297U, publication date 5/24 in 2019 discloses an underprop type pedestrian overpass, in which upper chords and lower chords in the same group are relatively fixed by inclined web members; a floor for supporting is arranged between the two lower chords in different groups for people to walk; the bottom of the lower chord is supported by a support on the pier; reinforcing web members are further arranged between the upper chord member and the lower chord member in the same group, the inclined web members are arranged on the outer sides of the two vertically parallel reinforcing web members, and the upper chord member, the lower chord member and the two reinforcing web members surround an inlet and an outlet for entering and exiting; according to the pedestrian overpass structure provided by the invention, the entrances and exits can be normally formed at two ends, the entrances and exits are surrounded by the upper chord, the lower chord and the two reinforcing web members at the middle position, the structures such as stairs are arranged at the entrances and exits in a butt joint mode, pedestrians can enter and exit the overpass from the entrances and exits in the middle, the entrances and exits in the middle are kept connected by the upper chord and the lower chord, a cantilever span structure can be adopted when the entrances and exits in the middle are arranged at positions close to the ends, and extra piers do not need to be additionally arranged at the. However, the through type pedestrian overpass has smaller bridge deck width and clearance height under the bridge, and can not meet the requirement of dredging mass pedestrian flow during commuting and holidays.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a jam-proof pedestrian overpass which can well solve the problem of jam.
The above purpose of the invention is realized by the following technical scheme:
an anti-congestion pedestrian overpass, comprising: main road, auxiliary road, pedestrian stairs and bridge piers;
the main road comprises a first branch main road and a second branch main road, and the first branch main road and the second branch main road are arranged in an orthogonal cross manner;
the first end of the first branch main road is communicated with the first end of the second branch main road through a secondary road, and the first end of the first branch main road is communicated with the second end of the second branch main road through a secondary road; the second end of the first branch main road is communicated with the first end of the second branch main road through a secondary road, and the second end of the first branch main road is communicated with the second end of the second branch main road through a secondary road;
the first end and the second end of the first branch main road are respectively arranged on one pier, and the first end and the second end of the second branch main road are also respectively arranged on one pier;
and each end of the first branch main road and each end of the second branch main road are respectively provided with a pedestrian stair, and two sides of the pedestrian stairs are provided with railings.
Preferably, the planar shape of the sub-road is a circular arc.
Further, the secondary road is located between the intersection of the main road and the center of the secondary road.
Preferably, each bridge pier is provided with a back-cable-free cable-stayed bridge tower, a stay cable is arranged between each back-cable-free cable-stayed bridge tower and the adjacent branch main road, the stay cables at the two ends of the first branch main road are symmetrical about the cross point of the main road, and the stay cables at the two ends of the second branch main road are symmetrical about the cross point of the main road.
Preferably, the top surface of the stay bridge tower without the back cables is an inclined plane, the upper part and the lower part of the tower body are funnel-shaped, and the small ends of the two funnel-shaped structures are connected.
Preferably, the lower beam of the main road and the lower beam of the auxiliary road are both steel box beams.
Preferably, each end of the first branch main road and each end of the second branch main road are provided with a lifting elevator.
Preferably, the bridge pier adopts a reinforced concrete combined structure.
Preferably, each end of the first branch main road and each end of the second branch main road are respectively provided with two pedestrian staircases, and the two pedestrian staircases are made of steel.
Preferably, the side of the first branch main road, the side of the second branch main road and the side of the auxiliary road are provided with guardrails.
Compared with the prior art, the invention has the following beneficial technical effects:
the main road of the invention adopts an orthogonal cross beam structure, and the auxiliary road is added at the shunting point and the confluence point of the main bridge surface to form a plurality of communicated bridge surfaces, thereby effectively solving the conflict point problem of shunting and converging when crowds are distributed, changing the conflict point which is most difficult to be dredged into a smoothly connected transition point, and avoiding crowds of the whole overpass from being blocked due to the crossing of crowd paths of the conflict point. Compared with the existing anti-blocking pedestrian overpass, the strong conveying capacity of the anti-blocking pedestrian overpass is greatly improved, the conditions of upper bridge blocking, turning blocking, cross blocking and section false blocking of the pedestrian overpass are avoided, the pedestrian flow conveying capacity in a special period is greatly guaranteed, meanwhile, efficient conveying crowds provide convenience for pedestrians to pass, and traffic pressure is reduced. Meanwhile, the piers of the pedestrian overpass are vertically arranged at four corners of the field, and the piers are not arranged at the midspan position of the pedestrian overpass, so that a supporting effect is provided for the upper structure of the pedestrian overpass, and the lower pavement of the pedestrian overpass is spacious, so that vehicles can run conveniently. Both sides of the pedestrian stairs are provided with guardrails, so that safety accidents such as falling of pedestrians are prevented.
Furthermore, in the prior art, in the aspect of designing and researching anti-congestion pedestrian overpasses, the structural safety of the anti-congestion pedestrian overpasses is emphasized too much, and the anti-congestion pedestrian overpasses are not recognized to be part of urban space resources, so that the designed anti-congestion pedestrian overpasses are not combined with the surrounding environment sufficiently. The plane shape of the main road is in an orthogonal cross shape, the plane shape of the auxiliary road is in an arc shape, the appearance of the four-star is abstracted to be a plane bridge shape, the appearance is symmetrical and attractive, no redundant structure is arranged above the middle bridge floor, the shielding of surrounding scenery is effectively avoided, and the four-star can be well combined with the surrounding scenery.
Furthermore, four back-cable-free cable-stayed bridge towers are arranged at four ends of the main road of the pedestrian overpass, and the gravity center of each back-cable-free cable-stayed bridge tower and the gravity center of the pier are on the same vertical straight line. The pedestrian overpass adopts novel no back cable stayed-cable mode to assist the girder atress, and no back cable stayed-cable bridge tower is as main bearing structure, for prevent blocking up the pedestrian overpass provides sufficient bearing capacity.
Furthermore, no back cable-stay bridge tower adopts inclined plane "funnel formula" steel column structure, and the top surface of no back cable-stay bridge tower is the inclined plane, and body of the tower upper portion and lower part all are hourglass hopper-shaped, and the little head end of two hourglass hopper-shaped structures connects, and this line type can reduce the moment of flexure value of king-tower mid portion when reducing king-tower height, for the pedestrian overpass that prevents blocking provides sufficient bearing capacity, also increases the sense of space of three-dimensional aspect for whole molding.
Further, the roof beam of full-bridge all adopts steel box girder construction, and steel box girder cross section is single case two rooms, and the section height is little, and the clearance height under the bridge is big, and the dead weight is less, reduces sheltering from road top sight, and the field of vision when expanding the driver and driving the vehicle can also be guaranteed that the structure has sufficient intensity, rigidity and stability.
Furthermore, the existing overpass design concept lacks humanistic care, and cannot take care of the weak groups such as the old, the young, the sick and the disabled, and if a plurality of overpasses are not provided with wheelchair channels, the defects finally influence the development process of the anti-congestion pedestrian overpass. The pedestrian overpass is provided with the elevator, so that convenience is provided for the old, weak, sick and disabled and other weak groups through anti-congestion pedestrian overpasses.
Furthermore, two pedestrian staircases are respectively arranged on two sides of the end part of the main road, the full bridge is provided with eight pedestrian staircases in total, steel is selected for use as a material, pedestrian flow is convenient to evacuate, and pedestrian congestion on the staircases is avoided.
Furthermore, the side of the main road and the side of the auxiliary road facing the air are provided with guardrails, so that safety accidents such as falling of pedestrians are prevented.
Drawings
Fig. 1 is a schematic perspective view of the anti-congestion pedestrian overpass;
FIG. 2 is a schematic top view of the anti-jamming pedestrian overpass;
fig. 3 is a schematic front view of the anti-congestion pedestrian overpass;
FIG. 4 is a schematic view of a pedestrian stairway arrangement;
FIG. 5 is a schematic perspective view of a cable-stayed bridge tower without a back cable;
FIG. 6 is a schematic structural view of a steel box girder;
in the figure: 1. the main road, 2, the auxiliary road, 3, the pedestrian stairs, 4, the elevator, 5, the pier, 6, the stay bridge tower without the back cable, 7, the stay cable, 8, the guardrail, 9, the first branch main road, 10, the second branch main road, 11, the steel box girder, 12, the rest platform.
Detailed Description
The present invention will be described in detail with reference to the following examples and the accompanying drawings.
As shown in fig. 1, the novel anti-jamming pedestrian overpass of the present invention comprises: the device comprises a main road 1, an auxiliary road 2, a pedestrian stair 3, a lifting elevator 4, a pier 5, a stay bridge tower 6 without a back cable, a stay cable 7 and a guardrail 8.
As shown in fig. 1 and 2, the main track 1 includes a first branch main track 9 and a second branch main track 10, and the first branch main track 9 and the second branch main track 10 are arranged in an orthogonal cross. The first end of the first branch main channel 9 is communicated with the first end of the second branch main channel 10 through a secondary channel 2, and the first end of the first branch main channel 9 is communicated with the second end of the second branch main channel 10 through a secondary channel 2; the second end of the first branch main road 9 is communicated with the first end of the second branch main road 10 through a secondary road 2, and the second end of the first branch main road 9 is communicated with the second end of the second branch main road 10 through a secondary road 2. Guard rails with the height of 1.2m are arranged on the side, facing the air, of the first branch main road 9, the second branch main road 10 and the auxiliary road 2. In one embodiment, the main lane 1 has a clear width of 8m and a clear length of 87.5 m; the plane shape of the auxiliary road 2 is circular arc, the clear width is 8m, and the radius is 38.84 m.
The main road 1 and the auxiliary road 2 are structurally arranged, so that the problem of crowd gathering and distributing at each conflict point can be well solved, compared with the original overpass, the pedestrian flow walking distance in the diagonal direction is shortened, and the crowd gathering and distributing efficiency is greatly enhanced.
In one embodiment, the lower beam of the main road 1 and the lower beam of the auxiliary road 2 both adopt steel box beams 11, as shown in fig. 6, the cross section of the steel box beam 11 is a single-box double-chamber, the total length of the cross section is 8m, and the net height is 1.8 m. The steel box girder 11 section height is little, and the dead weight is less, reduces the sheltering from to road top sight, and the field of vision when expanding the driver and driving the vehicle also can guarantee simultaneously that the structure has sufficient intensity, rigidity and stability, effectively bears crowd's load, and overpass security also can obtain sufficient guarantee.
As shown in fig. 1 and 3, the first end and the second end of the first branch main road 9 are respectively placed on one pier 5, and similarly, the first end and the second end of the second branch main road 10 are respectively placed on one pier 5. In one embodiment, the pier 5 is of a semicircular reinforced concrete combined structure, the radius of the pier is 4m, and the height of the pier is 7.3 m. The bridge piers are arranged at the bottoms of two ends of the branch main road, and no structure is arranged above and below the middle bridge floor, so that the sheltering of surrounding scenery is well avoided, and the automobile can run conveniently.
As shown in fig. 2, a pedestrian stair 3 is arranged at each end of the first branch main road 9 and each end of the second branch main road 10, the materials are made of steel, and a rest platform 12 is arranged in the middle. In one embodiment, the pedestrian stairs 3 have a horizontal full length of 10m and a clear width of 5.5 m. The two sides of the stairs 3 are provided with guardrails 8 with the height of 1.2 m. In one embodiment, two pedestrian stairs 3 are provided at each end of the first branch main road 9 and each end of the second branch main road 10, as shown in fig. 4. In another embodiment, a hoisting elevator 4 is arranged behind each end of the first branch main road 9 and the second branch main road 10.
Four back-cable-free cable-stayed bridge towers 6 are arranged at four ends of the main road 1 of the pedestrian overpass, and the gravity center of each back-cable-free cable-stayed bridge tower 6 and the gravity center of each pier 5 are on the same vertical straight line. As shown in fig. 5, the back-cable-free cable-stayed bridge tower 6 adopts an inclined funnel type steel tower column structure, the top surface of the back-cable-free cable-stayed bridge tower 6 is a plane with a certain inclination, the upper part and the lower part of the tower body are funnel-shaped, the small ends of the two funnel-shaped structures are connected, or the upper part and the lower part of the tower body are truncated cone-shaped, and the tops of the two truncated cones are connected. The steel tower column is processed by the mill, and the field mounting welds into whole, and this line type can reduce the moment of flexure value of main tower mid portion when reducing the main tower height, and no back rope cable-stayed bridge tower 6 is as main bearing structure, for prevent blocking up pedestrian bridge provides sufficient bearing capacity, has saved the space, and no back rope cable-stayed bridge tower 6 that exceeds the certain height of bridge floor also can increase the cubical space sense for whole molding, and the structure is safe novel, embodies dense modern sense.
The stay cables 7 are arranged between the stay bridge tower 6 without the back cable and the adjacent branch main road, the stay cables 7 at the two ends of the first branch main road 9 are symmetrical about the cross point of the main road 1, and the stay cables 7 at the two ends of the second branch main road 10 are symmetrical about the cross point of the main road 1. In one embodiment, the gumless cable-stayed bridge tower 6 has the height of 10m and the width of 3.75 m. Three stay cables 7 are arranged at the position 8m higher than the tower of each stay bridge tower 6 without a back cable, a first stay cable 7 is arranged at the position 15m away from the bottom edge of the stay bridge tower 6 without the back cable, and the length of the stay cable is 17 m; a second stay cable 7 is arranged at a distance of 24.5m from the edge of the bottom of the cable-stayed bridge tower 6 without the back cable, and the length of the cable is 26 m; and a third stay cable 7 is arranged at a position 40.5m away from the edge of the bottom of the back-cable-free cable-stayed bridge tower 6, and the length of the cable is 45 m. The stay cable 7 provides enough tension for the structural stability of the main road 1 and the auxiliary road 2 of the pedestrian bridge.
The main road 1 and the auxiliary road 2 are prefabricated and assembled by factory segments, the main road 1 is hung on a pier 5, the auxiliary road 2 is hung at two adjacent ends of a first branch main road 9 and a second branch main road 10 respectively, then a backless cable stayed bridge tower 6 is installed on the pier 5, a stayed cable 7 is installed between the main road 1 and the backless cable stayed bridge tower 6, and finally the pedestrian stairs 3, the elevators 4 and the guardrails 8 of the anti-jamming pedestrian bridge are arranged to perfect the comprehensive service function of the anti-jamming pedestrian bridge.
The anti-congestion pedestrian overpass is in a plane bridge shape abstracted from a four-star shape, a novel back-cable-free cable-stayed mode is adopted to assist the main beam to bear force, the back-cable-free cable-stayed bridge tower 6 inclines to enable the dead weight of the back-cable-free cable-stayed bridge tower 6 to offset partial main beam dead weight effect, and the height of the main beam is reduced. In addition to the traditional pedestrian stairway 3, the lifting elevator 4 is arranged on the overpass to provide convenience for old, young, sick, disabled and other vulnerable groups to bridge. The anti-congestion pedestrian overpass provided by the invention has the advantages that the structure is ensured to have enough strength, rigidity and stability, the crowd gathering and distributing problem of each conflict point is well solved, the crowd gathering and distributing efficiency is greatly enhanced, congestion is not easy to cause, and the sense of space of a three-dimensional layer is increased.
According to the invention, a novel back-cable-free diagonal pulling mode is adopted to assist the main beam to bear force, the main beam adopts an orthogonal cross beam type structure, and an arc-shaped auxiliary channel is added at the diversion point and the confluence point of the main bridge floor, so that the problem of rush points of diversion and confluence when people are scattered is effectively solved, and the capability of conveying people is greatly improved; the back-rope-free cable-stayed bridge tower is used as a bearing structure to provide bearing capacity for the pedestrian overpass and also increase the space sense of a three-dimensional layer for the integral modeling; the full-bridge beams are all of a steel box beam structure, the steel box beam is small in section height, small in self weight and high in economical efficiency, the shielding of the sight above the road is reduced, the visual field of a driver when driving a vehicle is enlarged, and the structure can be guaranteed to have sufficient strength, rigidity and stability; besides the traditional pedestrian stairways, the overpass is also provided with a lifting elevator, so that convenience is provided for the old, weak, sick, disabled and other weak groups to pass through the pedestrian overpass.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that; modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. An anti-congestion pedestrian overpass, comprising: the device comprises a main road (1), an auxiliary road (2), a pedestrian stair (3) and a pier (5);
the main road (1) comprises a first branch main road (9) and a second branch main road (10), and the first branch main road (9) and the second branch main road (10) are arranged in an orthogonal cross manner;
the first end of the first branch main channel (9) is communicated with the first end of the second branch main channel (10) through a secondary channel (2), and the first end of the first branch main channel (9) is communicated with the second end of the second branch main channel (10) through a secondary channel (2); the second end of the first branch main channel (9) is communicated with the first end of the second branch main channel (10) through a secondary channel (2), and the second end of the first branch main channel (9) is communicated with the second end of the second branch main channel (10) through a secondary channel (2);
the first end and the second end of the first branch main road (9) are respectively arranged on one pier (5), and the first end and the second end of the second branch main road (10) are also respectively arranged on one pier (5);
each end of the first branch main road (9) and each end of the second branch main road (10) are respectively provided with a pedestrian stair (3), and railings are arranged on two sides of the pedestrian stairs (3).
2. The anti-congestion pedestrian bridge according to claim 1, wherein the planar shape of the secondary road (2) is a circular arc.
3. Anti-congestion pedestrian overpass according to claim 2, characterized in that the secondary road (2) is located between the crossroads of the primary road (1) and the centre of the secondary road (2).
4. The anti-congestion pedestrian overpass of claim 1, wherein each pier (5) is provided with a backless cable-stayed bridge tower (6), a stay cable (7) is arranged between the backless cable-stayed bridge tower (6) and the adjacent branch main road, the stay cables (7) at both ends of the first branch main road (9) are symmetrical with respect to the cross point of the main road (1), and the stay cables (7) at both ends of the second branch main road (10) are symmetrical with respect to the cross point of the main road (1).
5. The anti-congestion pedestrian overpass of claim 1, wherein the top surface of the gumless cable-stayed bridge tower (6) is an inclined surface, the upper part and the lower part of the tower body are funnel-shaped, and the small ends of the two funnel-shaped structures are connected.
6. The anti-congestion pedestrian bridge according to claim 1, characterized in that the lower beams of the main road (1) and the lower beams of the auxiliary road (2) are steel box beams (11).
7. Anti-congestion pedestrian bridge according to claim 1, characterized in that a lifting elevator (4) is provided at each end of the first branch road (9) and at each end of the second branch road (10).
8. The anti-congestion pedestrian overpass of claim 1, wherein the bridge piers (5) are of a reinforced concrete combined structure.
9. The anti-congestion pedestrian bridge according to claim 1, characterized in that two pedestrian stairs (3) are arranged at each end of the first branch main road (9) and each end of the second branch main road (10), and the two pedestrian stairs (3) are made of steel.
10. The anti-congestion pedestrian bridge according to claim 1, wherein the first branch main road (9), the second branch main road (10) and the free side of the auxiliary road (2) are provided with a guardrail (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911049889.1A CN110761162A (en) | 2019-10-31 | 2019-10-31 | Anti-congestion pedestrian overpass |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911049889.1A CN110761162A (en) | 2019-10-31 | 2019-10-31 | Anti-congestion pedestrian overpass |
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| CN110761162A true CN110761162A (en) | 2020-02-07 |
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| CN201911049889.1A Pending CN110761162A (en) | 2019-10-31 | 2019-10-31 | Anti-congestion pedestrian overpass |
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