Half-through arch bridge of consolidation system

Abstract

The utility model discloses a half-through arch bridge of a consolidation system. The half-through arch bridge comprises a bridge pier; the beam body is arranged above the bridge piers and is built on a building structure; the main arch is arranged on the beam body, fixedly connected with the beam body and obliquely arranged inwards, and the inhaul cables are arranged between the beam body and the main arch. The utility model has the beneficial effects that: when a traffic function is met, the main arch is fixedly connected with the beam body, so that the main arch meets the stress requirement on a structural system, the section form and the vertical surface form of the main arch have richer changes, and the building modeling function is better met; meanwhile, the main arch and the beam body adopt a consolidation system, and the beam body can participate in common stress of the main arch, so that the horizontal thrust of the arch bridge is reduced, and the soft soil area is modeled gracefully.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a mid-through arch bridge of a consolidation system. Background Art

[0002] Arch bridge is one of the oldest types of bridges. Compared with ordinary beam bridges, it has the characteristics of beautiful shape and large span capacity. Arch bridge is a thrust structure. Under the action of vertical load, the arch foot generates horizontal thrust in addition to vertical reaction force.

[0003] From the perspective of the arch bridge structure, most domestic mid-span arch bridges adopt a simple system structure, while there are few combined force systems that use the combined action of beams and arches. From the perspective of structural force characteristics, the typical mid-span thrust arch system belongs to a simple system arch bridge. All loads are borne by the main arch, and the bridge deck structure (main beam) is not stressed together with the main arch. The vehicle or pedestrian load acting on the bridge deck structure is transmitted to the main arch through columns and hangers.

[0004] According to the connection method at the intersection of the arch rib and the main beam, half-span arch bridges can be divided into two types: arch-beam consolidation system and arch-beam non-consolidation system. For half-span arch bridges with non-consolidation system, the main beam is mainly a force-transmitting component for the main arch, and the main arch is a simple force-bearing system. For half-span arch bridges with consolidation system, the main arch and the main beam together behave as a combined force-bearing system. Under the action of dead load, the properly supported main beam still mainly behaves as a force-transmitting structure. In general, the force on the main arch is not much different from that of the simple system. Under the action of live load, the mechanical behavior of the main arch is greatly affected by the main arch, and the overall stiffness and stability of the structure are improved, which is manifested as a specific force point of the combined system. However, after the main beam and the main arch are consolidated, the structural shape can have greater changes, which is particularly suitable for landscape bridges with high requirements for shape.

[0005] The development of current bridge technology has placed higher and higher requirements on landscape. Traditional arch bridges are gradually losing their competitiveness in the modern society with increasingly higher requirements for new aesthetics and modeling. The structural form of arch bridges that take into account both force and modeling are increasingly recognized by society, and are also a new feature of the development of arch bridges.

[0006] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0007] The technical problem to be solved by the utility model is to provide a mid-through arch bridge with beautiful shape for building in soft soil areas in view of the above-mentioned deficiencies and defects of the prior art, so as to solve the above-mentioned problems.

[0008] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0009] A mid-through arch bridge of a consolidation system, characterized by comprising:

[0010] bridge piers;

[0011] A beam body arranged above the bridge pier and built on the building structure;

[0012] a main arch disposed on the beam body, fixed to the beam body and arranged inwardly inclined, and

[0013] A plurality of cables are arranged between the beam body and the main arch.

[0014] In a preferred embodiment of the present utility model, the beam body includes a main beam welded to the main arch, a side span main beam arranged on both sides of the main beam and welded to the main arch, and a lower arch leg arranged on the pier and connected to the main beam and the side span main beam.

[0015] In a preferred embodiment of the present utility model, the connection between the main beam and the main arch is a beam-arch joint section.

[0016] In a preferred embodiment of the present invention, the angle between the main beam and the side span main beam is 74°.

[0017] In a preferred embodiment of the present utility model, the main arch includes a first arch rib segment, a second arch rib segment, a third arch rib segment, and a fourth arch rib segment. The first arch rib segment is located at the top of the main arch, the second arch rib segment is located above the beam-arch combination segment, the third arch rib segment is located below the beam-arch combination segment, and the fourth arch rib segment is respectively connected to the first arch rib segment, the second arch rib segment, and the third arch rib segment.

[0018] In a preferred embodiment of the present invention, the height of the first arch rib segment is 1.3 to 2.545 m, the width is 1.8 m, and the spacing between the cross ribs is 0.5 to 2.14 m; the height of the second arch rib segment is 1.45 m, the width is 1.8 m, and the spacing between the cross ribs is 2.0 m; the height of the third arch rib segment is 1.45 m, the width is 1.8 m, and the spacing between the cross ribs is 2.0 m; the height of the fourth arch rib segment is 1.8 m, the width is 1.8 m, and the spacing between the cross ribs is 0.91 to 2.545 m.

[0019] In a preferred embodiment of the present invention, the second arch rib segment, the third arch rib segment and the fourth arch rib segment are all box-shaped with equal cross-sections.

[0020] In a preferred embodiment of the present invention, each of the cables is arranged between the beam body and the main arch, and the spacing between each cable is 6m.

[0021] In a preferred embodiment of the present utility model, the main beam is a single-box double-chamber steel box beam, the box beam height of the main beam is 1.40m, the web spacing is 6.6m, and the cross diaphragm spacing is 0.8-3m.

[0022] In a preferred embodiment of the present invention, the side span main beam is a box-shaped beam with a uniform cross-section, the height of the side span main beam is 1.35m, the width is 1.8m, and the spacing between the transverse partitions is 1.3 to 3m.

[0023] Due to the adoption of the above technical scheme, the beneficial effects of the utility model are: the utility model can meet the traffic function while consolidating the main arch and the beam body. While the main arch meets the force requirements in the structural system, the cross-sectional form and the facade shape of the main arch have richer changes, which better meet the architectural modeling function; at the same time, the main arch and the beam body adopt a consolidation system, and the beam body can participate in the common force of the main arch, reducing the horizontal thrust of the arch bridge, and building a beautiful shape for soft soil areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a plan view of the utility model.

[0026] Figure 2 It is a connection arrangement diagram of the main arch and the beam body of the utility model.

[0027] Figure 3 It is a cross-sectional view of the first arch rib segment of the utility model.

[0028] Figure 4 It is a cross-sectional view of the second arch rib segment of the utility model.

[0029] Figure 5 It is a cross-sectional view of the third arch rib segment of the utility model.

[0030] Figure 6 It is a cross-sectional view of the fourth arch rib segment of the utility model.

[0031] Figure 7 It is a connection arrangement diagram of the main beam and the side span main beam of the utility model.

[0032] Figure 8 It is a cross-sectional view of the side span main beam of the utility model. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0034] See also Figures 1 to 8 A mid-through arch bridge of a consolidation system is shown, comprising a pier 1, a beam body 100, a main arch 200, and cables 300.

[0035] A bored pile 2 is provided at the bottom of the pier 1. The depth of the bored pile 2 in this embodiment is 1200 mm.

[0036] The beam body 100 is arranged above the bridge pier 1 and built on the building structure 1a. The beam body 100 in this embodiment does not have a separate abutment, and both sides of the beam body 100 are placed on the building structure 1a.

[0037] The main arch 200 is arranged on the beam body 100 and is fixed to the beam body 100 and tilted inwardly. In this embodiment, the main arch 200 is tilted inwardly at both sides at an angle of 74°. It is fixed to the beam body 100 to form a mid-span arch-beam combination system, and its span is arranged to be (47.343+90+41.934)m, the arch axis rise is f=24.9m, and the rise-to-span ratio is f / l=1 / 3.61.

[0038] A plurality of cables 300 are disposed between the beam body 100 and the main arch 200. In this embodiment, each cable 300 is arranged between the beam body 100 and the main arch 200 at intervals, and the interval between each cable 300 is 6 m. Specifically, there are 9 groups of cables in total.

[0039] The beam body 100 includes a main beam 110 welded to the main arch 200, side span main beams 120 arranged on both sides of the main beam 110 and welded to the main arch 200, and a lower arch leg 130 arranged on the pier 1 and connected to the main beam 110 and the side span main beam 120. In this embodiment, the angle between the main beam 110 and the side span main beam 120 is 74°. Specifically, the main arch 200 is welded to the main beam 110, the side span main beam 120 and the lower arch leg 130 respectively to realize the consolidation system. The interior of the lower arch leg is filled with concrete.

[0040] The connection between the main beam 110 and the main arch 200 is the beam-arch joint section a. In this embodiment, the main beam 110 and the main arch 200 are welded steel structures, and the connection between the main beam 110 and the main arch 200 is fully welded to realize a consolidation system.

[0041] The main arch 200 includes a first arch rib segment 210, a second arch rib segment 220, a third arch rib segment 230, and a fourth arch rib segment 240. The first arch rib segment 210 is located at the top of the main arch 200, the second arch rib segment 220 is located above the beam-arch combination segment a, the third arch rib segment 230 is located below the beam-arch combination segment a, and the fourth arch rib segment 240 is connected to the first arch rib segment 210, the second arch rib segment 220, and the third arch rib segment 230, respectively. In this embodiment, the height of the first arch rib segment 210 is 1.3m, the width of the first arch rib segment 210 is 1.8m, and the spacing between the transverse diaphragms of the first arch rib segment 210 is 0.5m. The height of the second arch rib segment 220 is 1.45m, the width of the second arch rib segment 220 is 1.8m, and the spacing between the transverse diaphragms of the second arch rib segment 220 is 2.0m. The height of the third arch rib segment 230 is 1.45m, the width of the third arch rib segment 230 is 1.8m, and the spacing between the transverse diaphragms of the third arch rib segment 230 is 2.0m. The height of the fourth arch rib segment 240 is 1.8m, the width of the fourth arch rib segment 240 is 1.8m, and the spacing between the transverse diaphragms of the fourth arch rib segment 240 is 0.91m. Specifically, the second arch rib segment 220, the third arch rib segment 230, and the fourth arch rib segment 240 are all box-shaped with equal cross-sections.

[0042] The main beam 110 is preferably a single-box double-chamber steel box beam, the box beam height of the main beam 110 is 1.40m, the web spacing of the main beam 110 is 6.6m, and the transverse diaphragm spacing of the main beam 110 is 0.8m. The side span main beam 120 in this embodiment is preferably a uniform cross-section box type, the height of the side span main beam 120 is 1.35m, the width of the side span main beam 120 is 1.8m, and the transverse diaphragm spacing of the side span main beam 120 is 1.3m.

[0043] The mid-span arch bridge adopting the consolidation system of the utility model meets the traffic function. Through the consolidation of the main arch and the beam body, the main arch meets the force requirements in the structural system. The cross-sectional form and the facade shape of the main arch have richer changes, which better meet the architectural modeling function. At the same time, the main arch and the beam body adopt the consolidation system, and the beam body can participate in the common force of the main arch, reducing the horizontal thrust of the arch bridge, and building a beautiful shape for soft soil areas.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mid-through arch bridge of a consolidation system, characterized in that: include: bridge piers; A beam body arranged above the bridge pier and built on the building structure; a main arch disposed on the beam body, fixed to the beam body and arranged inwardly inclined, and A plurality of cables arranged between the beam body and the main arch; The beam body includes a main beam welded to the main arch, side span main beams arranged on both sides of the main beam and welded to the main arch, and lower arch legs arranged on the pier and connected to the main beam and the side span main beam; The connection between the main beam and the main arch is a beam-arch joint section; The main arch includes a first arch rib segment, a second arch rib segment, a third arch rib segment, and a fourth arch rib segment. The first arch rib segment is located at the top of the main arch, the second arch rib segment is located above the beam-arch combination segment, the third arch rib segment is located below the beam-arch combination segment, and the fourth arch rib segment is connected to the first arch rib segment, the second arch rib segment, and the third arch rib segment, respectively.

2. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: The angle between the main beam and the side span main beam is 74°.

3. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: The height of the first arch rib segment is 1.3 to 2.545 m, its width is 1.8 m, and the spacing between the cross ribs is 0.5 to 2.14 m. The height of the second arch rib segment is 1.45 m, its width is 1.8 m, and the spacing between the cross ribs is 2.0 m. The height of the third arch rib segment is 1.45 m, its width is 1.8 m, and the spacing between the cross ribs is 2.0 m. The height of the fourth arch rib segment is 1.8 m, its width is 1.8 m, and the spacing between the cross ribs is 0.91 to 2.545 m.

4. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: The second arch rib segment, the third arch rib segment and the fourth arch rib segment are all box-shaped with uniform cross-section.

5. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: Each of the cables is arranged at intervals between the beam body and the main arch, and the spacing between each cable is 6m.

6. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: The main beam is a single-box double-chamber steel box beam, the box beam height of the main beam is 1.40m, and the web spacing is 6.6m. The spacing between the transverse partitions is 0.8 to 3m.

7. A mid-through arch bridge of a consolidation system according to claim 1, characterized in that: The side span main beam is a box-shaped beam with a uniform cross section, the height of the side span main beam is 1.35m, the width is 1.8m, and the spacing between the transverse partitions is 1.3 to 3m.

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