Novel pedestrian overpass under overpass bridge

Abstract

The utility model relates to the technical field of bridge engineering, in particular to a novel pedestrian overpass under an overpass bridge. Comprising an overpass superstructure, a rigid suspender and a flexible suspender, and the overpass superstructure is connected with an overpass bridge through the rigid suspender and the flexible suspender; the rigid suspenders are arranged on the two sides of the overbridge superstructure in the transverse bridge direction. The flexible suspenders are arranged on the two sides or in the middle of the overpass superstructure in the transverse direction of the overpass. The novel pedestrian overpass structure system is clear in stress, simple in appearance and high in assembly degree, the overpass bridge is fully utilized, ground traffic is not affected, the design problem of passing of crowds on the two sides below the overpass bridge is well solved, the design scheme that the overpass bridge and the pedestrian overpass are collinear is provided, and wide prospects of large-scale application are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge engineering technical field, concretely is a new type of overpass under overline bridge. BACKGROUND

[0002] At present, the overline bridge set in the city is mostly the bridge crossing the highway and municipal road, and the functional crossing of the people on both sides of the overline bridge is limited, and the underpass resource of the overline bridge is not fully utilized, aiming at the problem of land resource waste and inconvenience of people crossing caused by insufficient utilization of the underpass resource, the design scheme that the overline bridge and the overpass are collinear is adopted, through the longitudinal collinear arrangement mode, the new environmental impact zone is avoided, and the occupation of land resources and the damage of ecological environment caused by engineering construction are reduced.

[0003] With the development of urban traffic, more and more overline bridges appear in each main traffic intersection of the city, when the overpass facility and the overline bridge exist intersection or line position coincidence, the conventional overpass inevitably needs to complete the foundation, pier and main beam engineering, the cost will be higher, the whole engineering scale is influenced, and the occupation of land resources and the waste of underpass space are caused again. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the above problems, the utility model provides a new type of overpass under overline bridge. The space under the overline bridge is effectively utilized, no pier and support are set, rigid hanger and flexible hanger are used to provide support, people crossing overpass is set, the design concept has creativity and functionality, the expansion of three-dimensional space is realized, and the advantages of outstanding functionality, superior stress performance and good integrity are achieved.

[0005] The technical scheme of the utility model is as follows:

[0006] A new type of overpass under overline bridge, including overpass upper structure 2, rigid hanger 3, flexible hanger 4, overpass upper structure 2 is connected overline bridge 1 through rigid hanger 3 and flexible hanger 4;

[0007] Wherein, the rigid hanger 3 is arranged on both sides of the overpass upper structure in the bridge direction;

[0008] Wherein, the flexible hanger 4 is arranged on both sides or in the middle of the overpass upper structure in the bridge direction.

[0009] Further, the overpass upper structure 2 adopts steel box girder, I-steel-concrete composite beam, corrugated steel web-concrete composite beam or steel box-concrete composite beam.

[0010] Further, the rigid hanger 3 adopts rectangular steel pipe, circular steel pipe, I-shaped steel, polygonal steel pipe or prestressed concrete.

[0011] Further, the rigid hanger 3 and the deck superstructure 2 are arranged at an angle range of 45°-135° in the transverse direction and the longitudinal direction.

[0012] Further, the flexible hanger 4 adopts parallel steel wire, steel strand, prestressed thick steel bar or steel pull rod.

[0013] Further, when the flexible hanger 4 is arranged on both sides of the deck superstructure, the flexible hanger 4 and the deck superstructure 2 are arranged at an angle range of 45°-135° in the transverse direction and the longitudinal direction.

[0014] Further, when the flexible hanger 4 is arranged in the middle of the deck superstructure, the flexible hanger 4 is perpendicular to the deck superstructure 2.

[0015] Further, the number ratio of the rigid hanger 3 and the flexible hanger 4 is 1:0.5-1:10.

[0016] The novel pedestrian overpass has the advantages that: 1. The novel pedestrian overpass utilizes the space under the overpass bridge, connects the overpass bridge and the pedestrian overpass through the rigid hanger and the flexible hanger, widens the crowd passing function on both sides of the overpass bridge, has clear stress of the novel pedestrian overpass structural system, simple appearance, outstanding landscape effect, high structure assembly degree, fully utilizes the overpass bridge, does not affect the ground traffic, solves the design problem of the crowd passing on both sides of the overpass bridge, provides a design scheme that the overpass bridge and the pedestrian overpass are in the same line, and has wide application prospect.

[0017] 2. The rigid hanger and the flexible hanger can provide effective vertical stiffness, transverse stiffness and vertical stiffness for the deck superstructure, so that the vertical fundamental frequency, the longitudinal fundamental frequency and the transverse fundamental frequency of the pedestrian overpass are greater than 3 and 2 respectively, the pedestrian comfort degree is greatly improved, and the resonance problem of the pedestrian bridge is avoided.

[0018] 3. The deck superstructure adopts the steel structure and the steel-concrete combined structure, the size of each rod of the steel structure can be increased according to the stress, the thickness and width of the steel top plate, the steel bottom plate and the steel web plate are increased, and the requirements of different spans and different stress positions are met.

[0019] 4. The deck superstructure beam body can be fabricated and installed in an assembled manner, has high construction efficiency, small risk, short construction period and low comprehensive cost, and is consistent with the concept of the modern steel structure bridge assembly construction. DRAWINGS

[0020] Figure 1 It is a facade schematic view of the embodiment 1 of the utility model;

[0021] Figure 2 The figure is a plane schematic view of the footbridge of the embodiment 1 of the utility model;

[0022] Figure 3 The figure is a cross section schematic view of the embodiment 1 of the utility model at the rigid suspender;

[0023] Figure 4 The figure is a cross section schematic view of the embodiment 1 of the utility model at the flexible suspender;

[0024] Figure 5 The figure is a vertical surface schematic view of the embodiment 2 of the utility model;

[0025] Figure 6 The figure is a plane schematic view of the footbridge of the embodiment 2 of the utility model;

[0026] Figure 7 The figure is a cross section schematic view of the embodiment 2 of the utility model at the rigid suspender;

[0027] Figure 8 The figure is a cross section schematic view of the embodiment 2 of the utility model at the flexible suspender.

[0028] The figure shows: 1. The overline bridge; 2. The footbridge upper structure; 3. The rigid suspender; 4. The flexible suspender. DETAILED DESCRIPTION

[0029] The technical scheme of the utility model will be further explained in combination with the drawings and through specific embodiments:

[0030] Embodiment 1

[0031] The utility model provides a novel footbridge under the overline bridge, and the novel footbridge of the embodiment includes the overline bridge 1, the footbridge upper structure 2, the rigid suspender 3, the flexible suspender 4, as shown in the figure. Figures 1-4

[0032] The novel footbridge of the embodiment is located under the overline bridge, widens the function of the crowd passing on both sides of the overline bridge, fully utilizes the overline bridge, and does not affect the ground traffic.

[0033] The footbridge upper structure 2 is connected with the overline bridge 1 through the rigid suspender 3 and the flexible suspender 4, the footbridge is not provided with the pier and the support, the footbridge trend is consistent with the overline bridge trend, and two staircases are arranged at both sides of the footbridge.

[0034] The overline bridge 1 is the double-box single-chamber steel bottom plate wave web concrete composite beam, the overline bridge span is 50 m, the bridge beam height is 2.5 m, the bridge surface width is 16.5 m, and the vehicle is arranged according to three lanes. The vertical stiffening rib is arranged in the steel bottom plate wave web concrete composite beam at the connection place of the overline bridge 1, the rigid suspender 3 and the flexible suspender 4, and the axial force of the transmission bar is transferred.

[0035] ​The overbridge superstructure 2 adopts a steel box beam. The overbridge superstructure 2 is a single-box single-chamber inclined web steel box beam, the overbridge span is 31 m, the steel box beam height is 1 m, the top plate width is 5.5 m, the top plate thickness is 16 mm, the bottom plate width is 3.1 m, the bottom plate thickness is 20 mm, the web thickness is 16 mm, and the angle between the web and the bottom plate is 105°.

[0036] The rigid suspender 3 adopts a rectangular steel pipe with a size of 250x250x25 mm. The rigid suspender 3 can provide vertical stiffness, longitudinal stiffness and transverse stiffness for the overbridge.

[0037] The flexible suspender 4 adopts a steel pull rod with a GLC460UU type, and the steel pull rod diameter is 60 mm. The flexible suspender 4 can provide vertical stiffness and transverse stiffness for the overbridge.

[0038] The rigid suspender 3 is arranged on both sides of the overbridge superstructure 2 in the transverse bridge direction, and the distance between the rigid suspender 3 and the transverse cross-section center line of the overbridge superstructure 2 is 2.7 m. The rigid suspender 3 is arranged in the beam end area of the overbridge superstructure 2 in the longitudinal bridge direction, and the arrangement interval in the longitudinal bridge direction is 3.5 m.

[0039] The flexible suspender 4 is arranged on both sides of the overbridge superstructure 2 in the transverse bridge direction, and the distance between the flexible suspender 4 and the transverse cross-section center line of the overbridge superstructure 2 is 2.7 m. The flexible suspender 4 is arranged in the mid-span area of the overbridge superstructure 2 in the longitudinal bridge direction, and the arrangement interval in the longitudinal bridge direction is 3.0 m.

[0040] The number ratio of the rigid suspender 3 to the flexible suspender 4 is 1:1.75. There are 8 rigid suspenders 3 and 14 flexible suspenders 4.

[0041] The angle between the rigid suspender 3 and the overbridge superstructure 2 in the transverse bridge direction is 110°, and the angle in the longitudinal bridge direction is 90°. The rigid suspenders 3 are symmetrically arranged in the longitudinal bridge direction according to the mid-span center line of the overbridge superstructure 2.

[0042] The angle between the flexible suspender 4 and the overbridge superstructure 2 in the transverse bridge direction is 110°-135°, and the angle in the longitudinal bridge direction is 90°. The flexible suspenders 4 are symmetrically arranged in the longitudinal bridge direction according to the mid-span center line of the overbridge superstructure 2, and the angle in the transverse bridge direction is 110°, 118°, 126° and 135° from both ends to the mid-span according to different anchoring positions of the overbridge superstructure 2.

[0043] Embodiment 2

[0044] The utility model provides a novel footbridge under the overline bridge, and the novel footbridge of this embodiment comprises an overline bridge 1, an overbridge superstructure 2, a rigid suspender 3 and a flexible suspender 4, as shown in Figures 5-8 .

[0045] The overbridge superstructure 2 is connected to the overpass bridge 1 by rigid hangers 3 and flexible hangers 4, the overbridge is not provided with piers and supports, the overbridge is consistent with the overpass bridge in the aspect of the trend, and two elevators are arranged on the two sides of the overbridge.

[0046] The overpass bridge 1 is a H-shaped steel concrete composite beam, the overpass bridge has a span of 40 m, the bridge beam has a height of 2.0 m, the bridge deck has a width of 20 m, and vehicles are arranged in a two-way four-lane mode. A vertical stiffening rib is arranged in the H-shaped steel concrete composite beam at the connection position of the overpass bridge 1, the rigid hangers 3 and the flexible hangers 4, so as to transmit the axial force of the bar.

[0047] The overbridge superstructure 2 adopts a steel box concrete composite beam. The overbridge superstructure 2 is a single-box double-chamber steel box concrete composite beam, the overbridge has a span of 25 m, the overbridge superstructure 2 has a beam height of 0.95 m, the single-box double-chamber steel box has a height of 0.75 m, and the concrete bridge deck has a height of 0.2 m. The overbridge superstructure 2 has a bridge beam width of 4.5 m, the top plate of the open steel box beam has a width of 0.6 m, a thickness of 16 mm, the bottom plate has a width of 3.0 m, a thickness of 16 mm, and the web has a thickness of 16 mm.

[0048] The rigid hangers 3 adopt circular steel pipes, the circular steel pipes have a diameter of 220 mm and a wall thickness of 20 mm. The rigid hangers 3 can provide vertical stiffness, longitudinal stiffness and transverse stiffness for the overbridge.

[0049] The flexible hangers 4 adopt parallel steel wires, and the model is a ZM7-61 type cold cast anchor hanger. The steel wires have a diameter of 7 mm and a number of 61. The flexible hangers 4 can provide vertical stiffness for the overbridge.

[0050] The rigid hangers 3 are arranged on the two sides of the overbridge superstructure 2 in the transverse direction of the bridge, and the rigid hangers 3 are 2.0 m away from the center line of the cross section of the overbridge superstructure 2. The rigid hangers 3 are arranged in the beam end region of the overbridge superstructure 2 in the longitudinal direction of the bridge, and the arrangement interval in the longitudinal direction of the bridge is 4.0 m.

[0051] The flexible hangers 4 are arranged in the middle of the overbridge superstructure 2 in the transverse direction of the bridge. The flexible hangers 4 are arranged in the midspan region of the overbridge superstructure 2 in the longitudinal direction of the bridge, and the arrangement interval in the longitudinal direction of the bridge is 3.0 m.

[0052] The number ratio of the rigid hangers 3 to the flexible hangers 4 is 1:0.5. There are 8 rigid hangers 3 and 4 flexible hangers 4.

[0053] The rigid hangers 3 and the overbridge superstructure 2 are arranged at an angle of 120° in the transverse direction of the bridge and an angle of 65°-115° in the longitudinal direction of the bridge. The rigid hangers 3 are symmetrically arranged in the longitudinal direction of the bridge according to the center line of the midspan of the overbridge superstructure 2, and the angle in the longitudinal direction of the bridge is 65° at both ends and 115° in the midspan according to different anchoring positions of the overpass bridge 1.

[0054] The flexible boom 4 is 90° with the bridge upper structure 2 in the transverse direction and 90° in the longitudinal direction. The flexible boom 4 is symmetrically arranged according to the center line of the bridge upper structure 2 in the longitudinal direction.

[0055] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application.

[0056] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A new type of pedestrian overpass under a cross-line bridge, characterized by: It includes the overpass superstructure, rigid hangers and flexible hangers, and the overpass superstructure is connected to the overpass via the rigid hangers and the flexible hangers; Wherein, the rigid hangers are arranged on both sides of the overpass superstructure in the transverse direction of the bridge; Wherein, the flexible hangers are arranged in the transverse direction of the bridge on both sides or in the middle of the upper structure of the overpass.

2. The novel pedestrian overpass under a cross-line bridge according to claim 1, characterized in that: The overpass upper structure adopts steel box beam, I-beam-concrete composite beam, corrugated steel web-concrete composite beam or steel box concrete composite beam.

3. The novel pedestrian overpass under a cross-line bridge according to claim 1 is characterized in that: The rigid hanger is made of rectangular steel pipe, circular steel pipe, I-shaped steel, polygonal steel pipe or prestressed concrete.

4. The novel pedestrian overpass under a cross-line bridge according to claim 3 is characterized by: The included angles between the rigid hanger and the upper structure of the overpass in the transverse and longitudinal directions are in the range of 45° to 135°.

5. The novel pedestrian overpass under a cross-line bridge according to claim 1 is characterized in that: The flexible suspender is made of parallel steel wires, steel strands, prestressed thick steel bars or steel tie rods.

6. The novel pedestrian overpass under a cross-line bridge according to claim 1 is characterized in that: When the flexible hanger is arranged on both sides of the overpass superstructure, the angle between the flexible hanger and the overpass superstructure in the transverse and longitudinal directions is in the range of 45° to 135°. When the flexible hanger is arranged in the middle of the overpass superstructure, the flexible hanger is perpendicular to the overpass superstructure.

7. The novel pedestrian overpass under a cross-line bridge according to any one of claims 1 to 6, characterized in that: The ratio of the rigid suspension rods to the flexible suspension rods is 1:0.5 to 1:10.

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