A half-through pedestrian arch bridge

Abstract

A mid-bearing pedestrian arch bridge includes two curved small box beams located on the same plane, the two curved small box beams form a symmetrical wave structure, the two curved small box beams form an intersection at both ends of each module, the two curved small box beams form a separation section in the middle of each module, and a transverse connection is provided between the separation sections of the two curved small box beams, the mid-bearing pedestrian arch bridge includes two piers located within the length range of the main beam, the mid-bearing pedestrian arch bridge also includes a single arch rib, the single arch rib passes through the separation of the two curved small box beams of the two modules of the main beam and is consolidated therewith, the middle part of the single arch rib is located above the main beam, and a sling is provided between the middle part of the single arch rib and the main beam. The present invention can be manufactured in a factory and installed on site, and the construction method is convenient, thereby speeding up the construction process, shortening the construction period, and greatly reducing the impact on the environment and traffic.

Description

Technical Field

[0001] The invention relates to the technical field of bridge engineering, and in particular to a mid-span pedestrian arch bridge suitable for a landscape pedestrian bridge. Background Art

[0002] Arch bridges are widely used in bridge structures of various spans due to their beautiful arc shape, good span adaptability, and good economy. Conventional arch bridges are usually composed of arch ribs, main beams, cables or columns, and lower foundations. Figure 1 , Figure 2 As shown in the figure, the lateral stability of the arch bridge is provided by the arch ribs and wind bracing. The arch ribs are usually arranged in parallel or in an A-shaped arrangement. Since the width of the pedestrian arch bridge deck is relatively narrow, the arch ribs are arranged in parallel or in an A-shaped arrangement. The structure is complex, and the amount of arch ribs and wind bracing materials is high. By reasonably selecting the arch ribs, main beams and slings, a pedestrian arch bridge with reliable force, economical materials and beautiful shape can be designed. Summary of the invention

[0003] The invention provides a mid-span pedestrian arch bridge which is suitable for landscape pedestrian bridges and has convenient on-site installation and construction.

[0004] The present invention is implemented by the following technical solutions:

[0005] A mid-span pedestrian arch bridge, characterized in that the mid-span pedestrian arch bridge includes a main beam, the main beam includes two curved small box beams located on the same plane, the two curved small box beams form a symmetrical wave structure, the main beam forms a plurality of modules, at both ends of each module, the two curved small box beams form an intersection, in the middle of each module, the two curved small box beams form a separation section, and a transverse connection is provided between the separation sections of the two curved small box beams; the mid-span pedestrian arch bridge includes two piers located within the length range of the main beam, the mid-span pedestrian arch bridge also includes a single arch rib, the single arch rib is a box-shaped structure, the two ends of the single arch rib are connected to the piers, the two ends of the single arch rib respectively pass through the separation of the two curved small box beams of the two modules of the main beam and are consolidated therewith, the middle of the single arch rib is located above the main beam, and a sling is provided between the upper part of the single arch rib and the main beam.

[0006] Furthermore, the connection point between the sling and the main beam is located at the intersection of two curved small box beams or on a transverse connecting beam, and does not affect the pedestrian walkway.

[0007] Furthermore, an end arch rib is provided between the pier and the end of the main beam.

[0008] Furthermore, both ends of the main beam are connected to stairways.

[0009] The main beam of the present invention is composed of several modules. For bridge structures with different spans, the number of main beam modules or the length of the modules can be increased or decreased to adapt to changes in bridge spans. The advantages of the present invention are: ① It can be manufactured in a factory and installed on site, and the construction method is convenient, thereby speeding up the construction process, shortening the construction period, and greatly reducing the impact on the environment and traffic; ② For bridge structures with different spans, the number of main beam modules or the length of the modules can be increased or decreased to adapt to changes in bridge spans. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0011] Figure 1 It is an elevation view of a three-span mid-through arch bridge suitable for a landscape pedestrian bridge in the present invention;

[0012] Figure 2 for Figure 1 Schematic diagram of the plane structure;

[0013] Figure 3 for Figure 2 Schematic diagram of the cross-section structure along AA;

[0014] Figure 4 for Figure 2 Schematic diagram of the cross-section structure along BB;

[0015] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure along CC. DETAILED DESCRIPTION

[0016] The following combination Figures 1 to 5 The features of the present invention and other related features are further described in detail through embodiments to facilitate understanding by those skilled in the art. In the accompanying drawings, the same components are marked with the same reference numerals. The accompanying drawings are not drawn according to the actual scale.

[0017] like Figures 1 to 2 As shown, the three-span mid-through pedestrian arch bridge is suitable for landscape pedestrian bridges, and the two ends are connected to ladders 5. It is characterized in that the structure consists of a single arch rib 1, two rows of slings 2, two curved small box beams 3 and a transverse connecting beam 4.

[0018] The single arch rib 1 is a steel box structure, which is fixed to the main beam at the separation point 6 of the two curved small box beams without affecting the pedestrian walkway.

[0019] The connection points of the two rows of slings 2 and the main beam are located at the intersection of two curved small box beams or on the transverse connecting beam, which does not affect the pedestrian walkway.

[0020] like Figures 3 to 5As shown, the two curved small box girders 3 form a standing wave pattern through regular intersection and separation on the plane, and are connected by a transverse connecting beam 4 between the separated sections of the two box girders. The cross-section at the intersection of the main girders is as Figure 3 shown, and the cross-section of the transverse connecting beam at the separation is as Figure 4 shown, and the cross-section without the transverse connecting beam at the separation is as Figure 5 shown. The variation law of the alignment of the main girders can form a module between two intersection points. For bridge structures with different spans, the change of the bridge span can be adapted by increasing or decreasing the number of main girder modules or the length of the modules. The two separated curved small box girders and their transverse connection have high stiffness and save steel. The single arch rib and the two separated curved small box girders form a triangular arrangement through suspension cables, and have good lateral stability.

[0021] The three-span half-through arch bridge of the present invention can be manufactured in a factory and installed on site, and the construction method is convenient, thereby accelerating the construction process, shortening the construction period, and greatly reducing the impact on the environment and traffic.

[0022] The specific implementation manners of the present invention are described in a relatively specific and detailed manner, but it should not be understood as a limitation to the scope of the invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A half-through pedestrian arch bridge, characterized in that The mid-span pedestrian arch bridge includes a main beam, the main beam includes two curved small box beams located on the same plane, the two curved small box beams form a symmetrical wave structure, the main beam forms a plurality of modules, at the two ends of each module, the two curved small box beams form an intersection, in the middle of each module, the two curved small box beams form a separation section, a transverse connection is provided between the separation sections of the two curved small box beams, and a standing wave form is formed by regular intersection and separation on the plane; the mid-span pedestrian arch bridge includes two piers located within the length range of the main beam, the mid-span pedestrian arch bridge also includes a single arch rib, the single arch rib is a box-shaped structure, the two ends of the single arch rib are connected to the piers, the two ends of the single arch rib pass through the separation of the two curved small box beams of the two modules of the main beam respectively, and are consolidated therewith, the middle of the single arch rib is located above the main beam, and a sling is provided between the upper part of the single arch rib and the main beam.

2. The half-through pedestrian arch bridge according to claim 1, characterized in that, The connection point between the sling and the main beam is located at the intersection of two curved small box beams or on a transverse connecting beam, and does not affect the pedestrian walkway.

3. The through-arch pedestrian bridge according to claim 1, characterized in that, End arch ribs are provided between the bridge pier and the end of the main beam.

4. The through-arch pedestrian bridge according to claim 1, characterized in that, Both ends of the main beam are connected to ladders.

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