Bridge structure of beam-arch combination V-shaped through arch type with bridge deck separation

Abstract

This invention provides a V-shaped, under-arch bridge structure with a separated bridge deck and beam-arch combination, comprising a first main beam, a second main beam, an arch rib, tie rods, and hangers. The upper surfaces of the first and second main beams serve as traffic channels. The first and second main beams are spaced apart to avoid obstacles, and the two ends of the first and second main beams are respectively cross-fixed. The two ends of the arch rib and tie rods are respectively fixed at the two confluence points of the first and second main beams. The first and second main beams are connected to the arch rib by multiple hangers. This invention requires no significant environmental modifications and can harmonize with the specific surrounding environment.

Description

Technical Field

[0001] This invention belongs to the field of bridges, and particularly relates to a V-shaped under-arch bridge structure with a bridge deck separation beam-arch combination. Background Technology

[0002] Commonly used bridge structures include simply supported beams, continuous beams, rigid frame bridges, arch bridges, cable-stayed bridges, and suspension bridges. With the development of the domestic economy, infrastructure construction has increasingly higher requirements for landscape.

[0003] In the prior art, the arch bridge structure shown in Figure 1 is composed of crossbeams, arch ribs, hangers, longitudinal beams, and wind braces. The arch bridge structure shown in Figure 2 is composed of longitudinal beams, arch ribs, hangers, and crossbeams, which belongs to the beam-arch composite system structure. The aforementioned existing arch bridge structures have shorter paths, clear structural stress, and low cost, but their disadvantages are that the shape can only be linear, which may not be in harmony with the specific surrounding environment. When encountering obstacles of a certain height, the route needs to be changed or major modifications need to be made. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination, which does not require significant environmental modifications and can be integrated with the specific surrounding environment.

[0005] This invention, taking into account actual terrain conditions, provides a V-shaped under-arch bridge structure with a separated bridge deck, comprising a first main beam, a second main beam, arch ribs, tie rods, and hangers.

[0006] The upper surfaces of the first and second main beams form traffic channels. The first and second main beams are spaced apart to avoid obstacles, and the two ends of the first and second main beams are respectively cross-fixed.

[0007] The two ends of the arch rib and tie rod are respectively fixed at the two confluence positions of the first main beam and the second main beam;

[0008] Both the first and second main beams are connected to the arch ribs by multiple hangers.

[0009] More preferably, the cross-sections of the first main beam and the second main beam are equal or variable cross-sections.

[0010] More preferably, the first main beam and the second main beam are single beams, double beams, or multi-beams.

[0011] More preferably, the cross-section of the arch rib is a constant cross-section or a variable cross-section.

[0012] More preferably, the arch rib is a single beam, a double beam, or a multi-beam.

[0013] More preferably, the arch rib is provided with a channel or slot, the top of the hanger is provided in the channel or slot of the arch rib, and the bottom is fixed in the first main beam and the second main beam.

[0014] More preferably, the bottom of the hanger is anchored in the first and second main beams by anchorages.

[0015] More preferably, the two ends of the tie rod are anchored at the two ends of the bridge span.

[0016] More preferably, one arch rib is provided, located at the midpoint between the first main beam and the second main beam.

[0017] More preferably, two arch ribs are provided, with the first arch rib being closer to the first main beam and the second arch rib being closer to the second main beam. Hangers are provided between the first main beam and the first arch rib, between the second main beam and the second arch rib, between the first main beam and the second arch rib, and between the second main beam and the first main beam.

[0018] Compared with the prior art, the present invention can achieve at least the following beneficial effects:

[0019] 1. This bridge structure can effectively utilize specific terrain, improve the landscape effect, and provide a new approach to bridge structure design.

[0020] 2. The bridge structure provided by the present invention includes a first main beam and a second main beam, which are separated from each other and intersect only at both ends, providing a non-linear bridge deck. The middle separation can be bypassed without damaging the original buildings or ancient trees, thus adapting to the environment. Attached Figure Description

[0021] Figure 1 is a schematic diagram of an existing arch bridge structure. Figures 1(a) and 1(b) are plan views from different perspectives, Figure 1(c) is an elevation view, and Figures 1(d) and 1(e) are cross-sectional views from different perspectives.

[0022] Figure 2 is a schematic diagram of another existing arch bridge structure, where 2(a) is a plan view, 2(b) is an elevation view, and 2(c) is a cross-sectional view.

[0023] Figure 3 is a structural schematic diagram of a beam-arch combined V-shaped under-arch bridge structure provided in an embodiment of the present invention. Figure 3(a) is a top view, Figure 3(b) is an elevation view, and Figure 3(c) is a cross-sectional schematic diagram.

[0024] In Figure 3, 1-first main beam, 2-arch rib, 3-hanger rod, 4-tie rod, 5-second main beam. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0027] Terminology introduction:

[0028] Bridge structure: A structure that spans obstacles such as rivers and lakes to allow passage for people and vehicles.

[0029] Beam-arch combination: In this invention, the beam is the structural part that directly bears the loads of people, vehicles, etc., and the arch is the structural part that assists the beam structure in bearing the loads.

[0030] Under-supported arch type: The under-supported arch type referred to in this invention has the main beam located below the arch rib, and the main beam is suspended on the arch rib by hangers.

[0031] Example 1

[0032] Please refer to Figure 3. The present invention provides a bridge structure with a bridge deck separated beam-arch combination V-shaped under-arch type, which is a beam-arch combination structure, including a first main beam 1, an arch rib 2, a hanger 3, a tie rod 4, and a second main beam 5. The upper surfaces of the first main beam 1 and the second main beam 5 are traffic passages.

[0033] The first main beam 1 and the second main beam 5 are spaced apart, and the two ends of the first main beam 1 and the two ends of the second main beam 5 are respectively cross-fixed. Compared with the one-piece main beam in the prior art, the present invention has two main beams, the first main beam 1 and the second main beam 5 are spaced apart and cross at both ends, forming a non-linear bridge deck. The space between the first main beam 1 and the second main beam 5 can accommodate obstacles (such as ancient trees, hills, buildings, etc.) that are higher than the main beams and are not easy to remove in the beam arch planning area. In this way, it can be coordinated with the specific surrounding environment and has stronger applicability.

[0034] Both ends of the arch rib 2 and the tie rod 4 are fixed at the two confluence positions of the first main beam 1 and the second main beam 5, respectively.

[0035] Piers that provide support are provided below the intersection and consolidation points of the first main beam 1 and the second main beam 5. Supports for connecting the main beams are provided on the piers. The main beams and the arch ribs 2 are consolidated into a whole at both ends of the bridge span. The two ends of the tie rods 4 are anchored to the bridge spans at both ends by anchors (the straight distance between the meeting points of the two main beams is the bridge span, or simply the bridge span, and the main beams are supported by piers below the meeting points). The top of the hangers 3 is set in the reserved holes or slots of the arch ribs 2 within a range of 1 / 5 to 4 / 5 of the span from the support, and the bottom is anchored to the first main beam 1 and the second main beam 5 by anchors, with the rest exposed.

[0036] In the system of this invention, the first main beam 1 and the second main beam 5 directly bear the external load. The hangers 3 arranged along the first main beam 1 and the second main beam 5 provide partial support for the first main beam 1 and the second main beam 5. The hangers 3 transfer the load to the arch rib 2. The horizontal load at both ends of the bridge span is balanced by the tensioning rods 4, so that the system can achieve an overall self-balancing state (ultimately, only the supports that can withstand the vertical force need to transfer the load to the substructure).

[0037] Example 2

[0038] The present invention provides a V-shaped under-arch bridge structure with a bridge deck separation beam-arch combination, including a first main beam 1, an arch rib 2, a hanger 3, a tie rod 4, and a second main beam 5. The upper surfaces of the first main beam 1 and the second main beam 5 serve as traffic passages.

[0039] The first main beam 1 and the second main beam 5 are spaced apart, and the two ends of the first main beam 1 and the two ends of the second main beam 5 are respectively cross-fixed. The two ends of the arch rib 2 and the tie rod 4 are respectively fixed at the two confluence positions of the first main beam 1 and the second main beam 5. The first main beam 1 and the second main beam 5 are connected to the arch rib 2 by multiple hangers 3.

[0040] In this embodiment, the first main beam 1 travels from east to west, while the second main beam 5 can travel from west to east without interfering with each other.

[0041] In this embodiment, both the first main beam 1 and the second main beam 5 are arc-shaped.

[0042] In this embodiment, the first main beam 1 and the second main beam 5 have equal or variable cross sections.

[0043] In this embodiment, the first main beam 1 and the second main beam 5 are composed of a single beam, a double beam, or a multi-beam.

[0044] Piers that provide support are provided below the intersection of the two ends of the first main beam 1 and the two ends of the second main beam 5. Supports for connecting the main beams are provided on the piers. The main beams and the arch ribs 2 are fixed together at both ends of the bridge span. The two ends of the tie rods 4 are anchored to the two ends of the bridge span by anchors (the straight distance between the two main beams meeting points is the bridge span, or simply the bridge span, and the main beams are supported by piers below the meeting points). The top of the hanger 3 is set in the reserved hole or slot of the arch rib 2 within a range of 1 / 5 to 4 / 5 of the span from the support, and the bottom is anchored to the first main beam 1 and the second main beam 5 by anchors, with the rest exposed.

[0045] In the system of this invention, the first main beam 1 and the second main beam 5 directly bear the external load. The hangers 3 arranged along the first main beam 1 and the second main beam 5 provide partial support for the first main beam 1 and the second main beam 5. The hangers 3 transfer the load to the arch rib 2. The horizontal load at both ends of the bridge span is balanced by the tensioning rods 4, so that the system can achieve an overall self-balancing state (ultimately, only the supports that can withstand the vertical force need to transfer the load to the substructure).

[0046] Example 3

[0047] The present invention provides a V-shaped under-arch bridge structure with a bridge deck separation beam-arch combination, including a first main beam 1, an arch rib 2, a hanger 3, a tie rod 4, and a second main beam 5. The upper surfaces of the first main beam 1 and the second main beam 5 serve as traffic passages.

[0048] The first main beam 1 and the second main beam 5 are spaced apart, and the two ends of the first main beam 1 and the two ends of the second main beam 5 are respectively cross-fixed. The two ends of the arch rib 2 and the tie rod 4 are respectively fixed at the two confluence positions of the first main beam 1 and the second main beam 5. The first main beam 1 and the second main beam 5 are connected to the arch rib 2 by multiple hangers 3.

[0049] In this embodiment, the arch rib 2 has a uniform or variable cross-section and is composed of a single beam, a double beam, or a multi-beam.

[0050] In this embodiment, an arch rib 2 is provided, which is located at the middle position between the first main beam 1 and the second main beam 5.

[0051] Piers that provide support are set below the intersection and fixed points of the two ends of the first main beam 1 and the two ends of the second main beam 5. Supports for connecting the main beams are set on the piers. The main beams and arch ribs 2 are fixed as a whole at both ends of the bridge span. The two ends of the tie rod 4 are anchored to the two ends of the bridge span by anchors (the straight distance between the two main beams meeting points is the bridge span, or simply the bridge span, and the main beams are supported by piers below the meeting points). The top of the hanger 3 is set in the reserved hole or slot of the arch rib 2 within a range of 1 / 5 to 4 / 5 of the span from the support, and the bottom is anchored to the first main beam 1 and the second main beam 5 by anchors, with the rest exposed.

[0052] In the system of this invention, the first main beam 1 and the second main beam 5 directly bear the external load. The hangers 3 arranged along the first main beam 1 and the second main beam 5 provide partial support for the first main beam 1 and the second main beam 5. The hangers 3 transfer the load to the arch rib 2. The horizontal load at both ends of the bridge span is balanced by the tensioning rods 4, so that the system can achieve an overall self-balancing state (ultimately, only the supports that can withstand the vertical force need to transfer the load to the substructure).

[0053] Example 4

[0054] The present invention provides a V-shaped under-arch bridge structure with a bridge deck separation beam-arch combination, including a first main beam 1, an arch rib 2, a hanger 3, a tie rod 4, and a second main beam 5. The upper surfaces of the first main beam 1 and the second main beam 5 serve as traffic passages.

[0055] The first main beam 1 and the second main beam 5 are spaced apart, and the two ends of the first main beam 1 and the two ends of the second main beam 5 are respectively cross-fixed. The two ends of the arch rib 2 and the tie rod 4 are respectively fixed at the two confluence positions of the first main beam 1 and the second main beam 5. The first main beam 1 and the second main beam 5 are connected to the arch rib 2 by multiple hangers 3.

[0056] In this embodiment, two arch ribs 2 are provided. There are no special requirements for the positional relationship between the two arch ribs 2. They can be set symmetrically or asymmetrically, as long as the whole structure maintains anti-overturning stability.

[0057] The two arch ribs 2 are defined as the first arch rib and the second arch rib. The one closer to the first main beam 1 is the first arch rib, and the one closer to the second main beam 5 is the second arch rib. Multiple hangers 3 are installed between the first main beam 1 and the first arch rib, arranged along the length of both. Multiple hangers 3 are also installed between the second main beam 5 and the second arch rib along the length of both. Furthermore, multiple hangers 3 are also installed between the first main beam 1 and the second arch rib, and between the second main beam 5 and the first arch rib. The installation of these hangers effectively improves the stability of the first main beam 1 and the second main beam 5.

[0058] Piers that provide support are provided below the intersection of the two ends of the first main beam 1 and the two ends of the second main beam 5. Supports for connecting the main beams are provided on the piers. The main beams and arch ribs 2 are fixed together at both ends of the bridge span. The two ends of the tie rod 4 are anchored to the two ends of the bridge span by anchors (the straight distance between the meeting points of the two main beams 1 is the bridge span, or simply the bridge span, and the meeting points of the main beams 1 are supported by piers). The top of the hanger 3 is set in the reserved hole or slot of the arch rib 2 within a range of 1 / 5 to 4 / 5 of the span from the support, and the bottom is anchored to the first main beam 1 and the second main beam 5 by anchors, with the rest exposed.

[0059] In the system of this invention, the first main beam 1 and the second main beam 5 directly bear the external load. The hangers 3 arranged along the first main beam 1 and the second main beam 5 provide partial support for the first main beam 1 and the second main beam 5. The hangers 3 transfer the load to the arch rib 2. The horizontal load at both ends of the bridge span is balanced by the tensioning rods 4, so that the system can achieve an overall self-balancing state (ultimately, only the supports that can withstand the vertical force need to transfer the load to the substructure).

[0060] Example 5

[0061] The construction steps for a V-shaped under-arch bridge structure with a separated bridge deck provided in the foregoing embodiments include:

[0062] The first step is to build a construction platform and construct temporary trestle bridges, temporary piers, and steel cofferdams. If the first main beam 1, the second main beam 5, and the arch rib 2 are prefabricated in the factory, the work can be carried out simultaneously.

[0063] The second step is to construct the bridge foundation and substructure.

[0064] The third step is to construct the first main beam 1 and the second main beam 5. If the first main beam 1 and the second main beam 5 are prefabricated structures, they are transported and hoisted together section by section until the first main beam 1 and the second main beam 5 are assembled.

[0065] The fourth step involves constructing arch rib 2 using temporary piers and universal rods. If arch rib 2 is a precast structure, the segments of arch rib 2 are hoisted, assembled, and aligned one by one.

[0066] The fifth step involves using an intelligent synchronous tensioning system to simultaneously tension tie rod 4 and all hangers 3 in one operation.

[0067] The sixth step is to dismantle the temporary piers in sequence, and after completing the construction of ancillary facilities and the load test of the completed bridge, it can be opened to traffic.

[0068] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination, characterized in that, It includes the first main beam (1), the second main beam (5), the arch rib (2), the tie rod (4), and the hanger (3). The upper surfaces of the first main beam (1) and the second main beam (5) form a traffic channel. The first main beam (1) and the second main beam (5) are spaced apart to avoid obstacles, and the two ends of the first main beam (1) and the two ends of the second main beam (5) are respectively cross-fixed. The two ends of the arch rib (2) and tie rod (4) are respectively fixed at the two confluence positions of the first main beam (1) and the second main beam (5); The first main beam (1) and the second main beam (5) are connected to the arch rib (2) by multiple hangers (3).

2. The V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination as described in claim 1, characterized in that, The cross-sections of the first main beam (1) and the second main beam (5) are either constant or variable.

3. The V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination as described in claim 1, characterized in that, The first main beam (1) and the second main beam (5) are single beams or multi-beams.

4. The V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 1, characterized in that, The cross section of the arch rib (2) is either a constant cross section or a variable cross section.

5. The V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 1, characterized in that, The arch rib (2) is a single beam or a multi-beam.

6. The V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 1, characterized in that, The arch rib (2) is provided with a channel or slot, and the top of the hanger (3) is set in the channel or slot of the arch rib (2), and the bottom is fixed in the first main beam (1) and the second main beam (5).

7. A V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 4, characterized in that, The bottom of the hanger (3) is anchored in the first main beam (1) and the second main beam (5) by anchorage.

8. A V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 1, characterized in that, The two ends of the tie rod (4) are anchored at the bridge spans at both ends.

9. A V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to claim 1, characterized in that, One arch rib (2) is provided, located in the middle of the first main beam (1) and the second main beam (5).

10. A V-shaped under-arch bridge structure with a separated bridge deck and beam-arch combination according to any one of claims 1-8, characterized in that, Two arch ribs (2) are provided. The first arch rib is defined as the arch rib closer to the first main beam (1), and the second arch rib is defined as the arch rib closer to the second main beam (5). Hangers (3) are provided between the first main beam (1) and the first arch rib, between the second main beam (5) and the second arch rib, between the first main beam (1) and the second arch rib, and between the second main beam (5) and the first main beam (1).

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