Arch springing structure of single-side double-arch-rib arch bridge
Through the arch foot structural design combining inner arch and outer arch, the mechanical and aesthetic problems of single-sided single-arch rib arch bridge are solved by using components such as arch foot steel bundle, pressure-bearing steel plate and stiffening ribs, the mechanical and aesthetic problems of single-sided single-arch rib arch bridge are achieved, and the integrity and stability of bridge design is achieved, reducing construction difficulty.
Patent Information
- Application Number
- CN202422346581.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The arch foot structure of the existing single-sided single-arch rib arch bridge is difficult to meet the needs of mechanical properties, aesthetics and special-shaped design, which makes it difficult to achieve the balance between bridge design complexity and visual aesthetics.
The arch foot structure design is adopted that combines the inner arch and the outer arch. Through components such as the arch foot steel bundle, pressure-bearing steel plate and stiffener rib, the integrity and compressive resistance of the arch foot are enhanced, and the shear strength is improved through shear nails, and a stable connection is formed by combining concrete pouring.
The integrity and stability of the arch foot structure of the single-sided double-arch rib arch bridge is improved, meeting the needs of mechanical and aesthetics, and reducing construction difficulty.
Smart Images
Figure CN223163750U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge structures, in particular to an arch foot structure of a single-sided double-arch rib arch bridge. Background Technique
[0002] In the field of bridge construction in China, technological progress is changing with each passing day, and construction scenarios are becoming increasingly rich and diverse. The traditional rib arch bridge mainly features a single-sided single-arch rib design. Nowadays, on the basis of ensuring the basic mechanical properties of the bridge, designers pay more attention to combining special-shaped elements with aesthetics, striving to find a perfect balance between mechanical requirements and visual aesthetics. Therefore, the appearance and force-bearing structure of bridges present unprecedented complexity and diversity, which undoubtedly pose more stringent challenges to bridge design. Content of the Utility Model
[0003] The purpose of the utility model is to provide an arch foot structure of a single-sided double-arch rib arch bridge to solve the problem that the arch feet of existing rib arch bridges do not meet the mechanical, aesthetic, and special-shaped requirements of single-sided double-arch rib arch bridges.
[0004] To achieve the above purpose, the utility model provides the following scheme:
[0005] An arch foot structure of a single-sided double-arch rib arch bridge includes an arch pier and an arch foot cast on the arch pier, and an inner arch and an outer arch are correspondingly cast on the arch foot.
[0006] Further, arch foot steel tendons are pre-buried in the arch pier, a part of the arch foot steel tendons is located in the arch pier, and the other part of the arch foot steel tendons is located in the arch foot.
[0007] Further, shear studs are arranged at the casting connection between the inner arch and the arch foot;
[0008] Shear studs are arranged at the casting connection between the outer arch and the arch foot.
[0009] Further, the cross-section of the inner arch is a regular rectangle, and two longitudinal ribs inside the arch are provided on the inner side wall of the inner arch;
[0010] The cross-section of the outer arch is a regular rectangle, and two longitudinal ribs inside the arch are provided on the inner side wall of the outer arch.
[0011] Further, a bearing steel plate is buried inside the arch foot.
[0012] Further, the bearing steel plate is welded to the inner arch and the outer arch respectively.
[0013] Further, a number of stiffening ribs are welded circumferentially on the bearing steel plate.
[0014] Further, sealing plates are welded inside the inner arch and the outer arch, and grouting holes are provided on the sealing plates.
[0015] Furthermore, a corrugated pipe is sleeved outside the arch springing steel strand.
[0016] It can be seen from the above technical solutions that, compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] The pressure is transmitted through the bearing steel plate, and the compressive performance of the concrete is better exerted; by pre-burying the arch springing steel strand, the concrete arch pier and the arch springing are effectively connected and the integrity is improved; a solution is provided for the column foot structure design of the single-side double-arch rib arch bridge, and the column foot has high integrity and low construction difficulty. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0019] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present utility model;
[0020] Figure 2 It is a schematic sectional view of the inner arch springing in the embodiment of the present utility model;
[0021] Figure 3 It is a schematic sectional view of the outer arch springing in the embodiment of the present utility model;
[0022] Figure 4 For Figure 2 the sectional view of A-A in
[0023] Figure 5 For Figure 2 or the sectional view of B-B in 3;
[0024] Figure 6 It is a schematic layout diagram of the top steel strand in the embodiment of the present utility model;
[0025] Figure 7 It is a schematic layout diagram of the side steel strand in the embodiment of the present utility model.
[0026] Description of the reference numerals:
[0027] 1, inner arch; 2, outer arch; 3, arch springing; 4, arch pier; 5, longitudinal rib in the arch; 6, sealing plate; 7, shear stud; 8, bearing steel plate; 9, arch springing steel strand; 10, stiffening rib. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0028] The following will further describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.
[0029] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.
[0030] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise stated, the meaning of "plurality" is two or more.
[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0032] In order to better understand the purpose, structure, and function of the present utility model, the following will further describe the present utility model in detail in conjunction with the accompanying drawings.
[0033] Embodiment
[0034] Refer to Figure 1 As shown, an arch foot structure of a single-sided double-arch rib arch bridge provided in this embodiment, more specifically, a steel-concrete combined arch foot structure applicable to a single-sided double-arch rib arch bridge, includes an arch pier 4 and an arch foot 3 cast on the arch pier 4. An inner arch 1 and an outer arch 2 are correspondingly cast on the arch foot 3;
[0035] Specifically, refer to Figure 2, embed the arch springing steel strand 9 in the arch pier 4, pour out half (part) of the arch springing 3 near the arch pier 4 and embed the stiffening skeleton for fixing the inner arch 1, install and fix the inner arch 1, then connect the inner arch 1 and the remaining part of the arch springing 3 by cast-in-place concrete. Weld two equal-strength longitudinal ribs 5 on each side of the inner side of the inner arch 1. Set shear studs 7 between the inner arch 1 and the arch springing 3 to improve the shear strength. A sealing plate 6 is welded inside the inner arch 1. Micro-expansive concrete is poured into the inner arch 1 overlapping with the arch springing 3 through the grouting holes on the sealing plate 6. The sealing plate 6 is 100 cm above the top surface of the arch springing 3. In addition, a bearing steel plate 8 is buried inside the arch springing 3, and the bearing steel plate 8 is 50 c m.
[0036] Specifically, refer to Figure 3 , embed the arch springing steel strand 9 in the arch pier 4 through a corrugated pipe, pour out half (part) of the arch springing 3 near the arch pier 4 and embed the stiffening skeleton for fixing the outer arch 2, install and fix the outer arch 2. When pouring the inner arch 1 and the arch springing 3, connect the outer arch 2 and the arch springing 3 by pouring at the same time. Weld two equal-strength longitudinal ribs 5 on each side of the inner side of the outer arch 2. Set shear studs 7 between the outer arch 2 and the arch springing 3 to improve the shear strength. A sealing plate 6 is welded inside the outer arch 2. Micro-expansive concrete is poured into the outer arch 2 overlapping with the arch springing 3 through the grouting holes on the sealing plate 6. The sealing plate 6 is 100 cm above the top surface of the arch springing 3, and the bearing steel plate 8 is 50 cm below the top surface of the arch springing 3.
[0037] It should be noted that the inner arch 1 and the outer arch 2 are steel structures with a regular rectangular cross-section; the arch springing 3 and the arch pier 4 are concrete structures.
[0038] Refer to Figure 4 , weld with equal strength between the inner arch 1 and the bearing steel plate 8, weld with equal strength between the outer arch 2 and the bearing steel plate 8, weld with equal strength between the stiffening rib 10 and the bearing steel plate 8, weld with equal strength between the stiffening rib 10 and the inner arch 1, weld with equal strength between the stiffening rib 10 and the outer arch 2. The stiffening rib 10 is 16 mm thick and extends inwards by 1 m, and the outer edge of the arch springing is 15 cm thick.
[0039] Refer to Figure 5 , shear studs 7 are arranged on all four sides of the periphery of the inner arch 1, with a spacing of 15 cm between the shear studs 7. The cross-section of the inner arch 1 is 106 cm wide and 180 cm long. Shear studs 7 are arranged on all four sides of the periphery of the outer arch 2, with a spacing of 15 cm between the shear studs 7. The cross-section of the outer arch 2 is 106 cm wide and 180 cm long. The chamfer radius at the four vertices of the cross-section of the arch springing 3 is 15 cm.
[0040] Specifically, the shear studs 7 are arranged at equal intervals on all four sides of the peripheries of the inner arch 1 and the outer arch 2.
[0041] Refer to Figure 6, 12 arch-foot steel tendons 9 are arranged on the top surface of the column base 3. Each arch-foot steel tendon 9 is composed of 16 steel wires, is sleeved in a corrugated pipe and pre-buried into the arch pier 4. The arch-foot steel tendons 9 are arranged along the side direction of the bearing steel plate 8.
[0042] Please refer to Figure 7 , 14 arch-foot steel tendons 9 are arranged on the side surface of the column base 3. Each arch-foot steel tendon 9 is composed of 16 steel wires, is sleeved in a corrugated pipe and pre-buried into the arch pier 4. The arch-foot steel tendons 9 are arranged along the top edge direction of the bearing steel plate 8.
[0043] The working principle of the present utility model: The bearing steel plate 8 and the arch foot 3 can bear the pressure and horizontal thrust applied by the inner arch 1 and the outer arch 2. The arch pier 4 can provide additional horizontal reaction force and vertical reaction force. The arch-foot steel tendons 9 improve the integrity of the arch pier 4 and the arch foot 3, and the stiffening rib 10 improves the stability and torsional resistance of the arch foot 3.
[0044] It should be noted that by increasing the sizes of the arch foot 3 and the arch pier 4, the bearing capacity requirements of arch bridges with different sizes of inner arch 1 and outer arch 2 can be met.
[0045] In this article, specific examples are used to elaborate on the principle and implementation mode of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.
Claims
1. The arch springing structure of a single-sided double-arch rib arch bridge, characterized in that, It includes an arch pier and an arch springing cast on the arch pier, and an inner arch and an outer arch are correspondingly cast on the arch springing; An arch springing steel strand is embedded in the arch pier, a part of the arch springing steel strand is located in the arch pier, and the other part of the arch springing steel strand is located in the arch springing; A bearing steel plate is embedded inside the arch springing.
2. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that, Shear studs are arranged at the casting joint of the inner arch and the arch springing; Shear studs are arranged at the casting joint of the outer arch and the arch springing.
3. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that, The cross-section of the inner arch is a regular rectangle, and two longitudinal ribs inside the arch are provided on the inner side wall of the inner arch; The cross-section of the outer arch is a regular rectangle, and two longitudinal ribs inside the arch are provided on the inner side wall of the outer arch.
4. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that: The bearing steel plate is welded to the inner arch and the outer arch respectively.
5. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that: A number of stiffening ribs are welded circumferentially on the bearing steel plate.
6. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that, Sealing plates are welded inside both the inner arch and the outer arch, and grouting holes are provided on the sealing plates.
7. The arch foot structure of a single-sided double-arch rib arch bridge according to claim 1, characterized in that: A corrugated pipe is sleeved outside the arch springing steel strand.