Steel-concrete composite beam and viaduct
By adopting a combination design of steel box units and cross bracing mechanisms on the viaduct, the problems of traffic interference during construction and standardized production were solved, enabling rapid and standardized construction of the viaduct and efficient use of materials.
Patent Information
- Application Number
- CN202422762813.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-12
AI Technical Summary
In existing technologies, the construction methods for urban viaducts and overpasses require the erection of scaffolding on the road, which affects traffic conditions, leads to a long construction period, increases travel time and social costs, and the design of different bridge widths makes standardized production and construction difficult, slowing down the construction speed.
Multiple steel box units are arranged sequentially along the width of the viaduct and connected by a cross bracing mechanism to form a steel-concrete composite beam. The number of steel box units can be flexibly selected according to the width of the bridge, achieving standardized design and rapid construction.
This has enabled the standardized construction of viaducts of different widths, reduced traffic disruption during construction, increased construction speed and material utilization efficiency, and lowered construction costs.
Smart Images
Figure CN223510260U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bridge and civil engineering technology, and in particular to a steel-concrete composite beam and an elevated bridge. Background Technology
[0002] Currently, urban viaducts and overpasses primarily utilize cast-in-place concrete beams supported by scaffolding. This construction method, requiring the erection of scaffolding along the road, significantly impacts traffic conditions. The lengthy construction period inconveniences travelers, increases travel time and fuel consumption, and raises social costs.
[0003] Precast construction is a way to improve bridge quality, accelerate construction progress, and save construction costs. Steel-concrete composite structures among precast components are preferred for urban bridges due to their lightweight construction, varying beam heights, and aesthetically pleasing appearance. Steel-concrete composite structures are a performance-optimized structural form developed based on steel and concrete structures. Through rational design, this structural form can better utilize the tensile strength of steel and the compressive strength of concrete, improving material utilization efficiency and facilitating construction, thus gaining increasing importance in bridges and civil engineering. With the significant increase in my country's steel production, steel prices have gradually decreased, making the use of steel-concrete composite beams in bridges increasingly advantageous. Using these composite beams in urban viaducts and overpasses can minimize scaffolding construction, avoid occupying space under the bridge, and prevent excessive interference with traffic on existing roads.
[0004] Currently, due to the different bridge designs, the width of the bridge varies, which requires the redesign of a steel-concrete composite beam. This is not conducive to standardized production and construction, and also slows down the construction speed. Utility Model Content
[0005] The main purpose of this utility model is to propose a steel-concrete composite beam and viaduct, which aims to provide a steel-concrete composite beam and viaduct that is easy to standardize in production and construction.
[0006] To achieve the above objectives, the steel-concrete composite beam proposed in this utility model includes:
[0007] Multiple steel box units are provided, and each steel box unit is arranged sequentially along the width direction of the viaduct; and...
[0008] A cross-connecting mechanism is provided between each of the steel box units to connect the steel box units.
[0009] In one embodiment, the steel box unit includes:
[0010] The bottom plate of the box extends along the length of the viaduct;
[0011] Two box-shaped web plates are respectively protruding from both ends of the box-shaped bottom plate along its width direction;
[0012] The top plate of the container is disposed opposite to the bottom plate of the container, and its two ends along the width direction are respectively connected to the two belly plates of the container.
[0013] In one embodiment, the steel box unit further includes a transverse partition, which protrudes from the bottom plate of the box and is connected to the top plate of the box.
[0014] In one embodiment, the diaphragm is connected to the two box girder sides at both ends along the width direction of the viaduct.
[0015] In one embodiment, the diaphragm has through holes.
[0016] In one embodiment, multiple transverse partitions are provided, and they are evenly spaced along the length of the steel box unit.
[0017] In one embodiment, the cross-linking mechanism includes a connecting steel plate, the two ends of which are bolted to the housing of the steel box unit.
[0018] In one embodiment, multiple connecting steel plates are provided and are evenly spaced along the length of the steel box unit.
[0019] In one embodiment, the steel-concrete composite beam further includes multiple planar top plates, each of which is erected between the steel box units to serve as a support surface for concrete pouring.
[0020] This utility model also proposes an elevated bridge, which includes a steel-concrete composite beam as described in any of the preceding embodiments.
[0021] The technical solution of this utility model employs multiple steel box units. The number of steel box units is flexibly selected according to the width of the viaduct design, and each steel box unit is arranged sequentially along the width direction of the viaduct to form the steel-concrete composite beam. Simultaneously, the steel box units are connected by a transverse connecting mechanism, thereby fixing each steel box unit relatively. This arrangement allows for the formation of steel-concrete composite beams of corresponding widths for viaducts of different widths using standardized steel box units and transverse connecting mechanisms, thus facilitating standardized construction of viaducts and improving construction speed. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0023] Figure 1 This is a structural schematic diagram of an embodiment of the steel-concrete composite beam provided by this utility model.
[0024] Explanation of icon numbers:
[0025] 100. Steel-concrete composite beam; 1. Steel box unit; 11. Box bottom plate; 12. Box web plate; 13. Box top plate; 14. Transverse diaphragm; 141. Through hole; 2. Transverse bracing mechanism; 21. Connecting steel plate; 3. Planar top plate;
[0026] 200. Elevated bridge.
[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0031] Currently, urban viaducts and overpasses primarily utilize cast-in-place concrete beams supported by scaffolding. This construction method, requiring the erection of scaffolding along the road, significantly impacts traffic conditions. The lengthy construction period inconveniences travelers, increases travel time and fuel consumption, and raises social costs.
[0032] Precast installation is a way to improve bridge quality, accelerate construction progress, and save construction costs. Steel-concrete composite structures among precast components are preferred for urban bridges due to their lightweight construction, varying beam heights, and aesthetically pleasing appearance. Steel-concrete composite structures are a performance-optimized structural form developed based on steel and concrete structures. Through rational design, this structural form can better utilize the tensile strength of steel and the compressive strength of concrete, improving material utilization efficiency and facilitating construction, thus gaining increasing importance in bridges and civil engineering. With the significant increase in my country's steel production, steel prices have gradually decreased, making the use of steel-concrete composite beams in bridges increasingly advantageous. Using these composite beams in urban viaducts and overpasses can minimize scaffolding construction, avoid occupying space under the bridge, and prevent excessive interference with traffic on existing roads.
[0033] Currently, due to the different bridge designs, the width of the bridge varies, which requires the redesign of a steel-concrete composite beam. This is not conducive to standardized production and construction, and also slows down the construction speed.
[0034] To address the aforementioned problems, this utility model proposes a steel-concrete composite beam and viaduct, aiming to provide a steel-concrete composite beam and viaduct that is easy to standardize in production and construction. Figure 1 This is a structural schematic diagram of one embodiment of the steel-concrete composite beam of this utility model.
[0035] Please refer to Figure 1In one embodiment of the present invention, the steel-concrete composite beam 100 includes a steel box unit 1 and a transverse connecting mechanism 2; multiple steel box units 1 are provided, and each steel box unit 1 is arranged sequentially along the width direction of the viaduct 200; the transverse connecting mechanism 2 is provided between each steel box unit 1 to connect each steel box unit 1.
[0036] The technical solution of this utility model adopts a plurality of steel box units 1. The number of steel box units 1 is flexibly selected according to the designed width of the viaduct 200, and each steel box unit 1 is arranged sequentially along the width direction of the viaduct 200 to form the steel-concrete composite beam 100. At the same time, the cross bracing mechanism 2 set between each steel box unit 1 is connected to fix each steel box unit 1 relatively. In this way, for viaducts 200 of different widths, the steel-concrete composite beam 100 of the corresponding width can be formed by the standardized steel box units 1 and the cross bracing mechanism 2, which facilitates the standardized construction of the viaduct 200 and improves the construction speed.
[0037] Further, please refer to Figure 1 The steel box unit 1 includes a box bottom plate 11, two box web plates 12 and a box top plate 13; the box bottom plate 11 extends along the length direction of the viaduct 200; the two box web plates 12 are respectively protruding from both ends of the box bottom plate 11 along its width direction; the box top plate 13 is disposed opposite to the box bottom plate 11 and is respectively connected to the two box web plates 12 along its width direction. It is understood that, in order to constitute the steel box unit 1, the steel box unit 1 includes at least the box bottom plate 11, the two box web plates 12, and the box top plate 13. Specifically, the box bottom plate 11 extends along the length direction of the viaduct 200; the two box web plates 12 are respectively protruding from both ends of the box bottom plate 11 along its width direction; the box top plate 13 is disposed opposite the box bottom plate 11, and is respectively connected to the two box web plates 12 along its width direction. With this arrangement, the steel box unit 1 is at least circumferentially enclosed along the axis of the length direction, which facilitates the assembly and standardized construction in the next step.
[0038] Further, please refer to Figure 1The steel box unit 1 also includes a transverse partition 14, which protrudes from the bottom plate 11 and is connected to the top plate 13. It is understood that the bottom plate 11, the two web plates 12, and the top plate 13 are simply arranged circumferentially along the axis extending along the length of the viaduct 200, and their cross-section is rectangular. According to geometric principles, if the bottom plate 11 and the top plate 13 are subjected to opposite shear forces in the width direction, the web plate 12 will tilt, meaning the cross-section of the steel-concrete composite beam 100 will tend to change from a rectangle to a parallelogram, which poses a risk. Therefore, the... The steel box unit 1 also includes a transverse partition 14, which protrudes from the bottom plate 11 and is connected to the top plate 13. With this arrangement, when the bottom plate 11 and the top plate 13 are subjected to opposite shear forces in the width direction, the transverse partition 14, which connects the bottom plate 11 and the top plate 13, prevents the tendency of the box web 12 to move, thus ensuring the stability of the steel box unit 1, which in turn ensures the stability of the steel-concrete composite beam 100.
[0039] Further, please refer to Figure 1 The transverse diaphragm 14 is connected to the two box girder webs 12 at both ends along the width direction of the viaduct 200. It is understood that in some instances, the transverse diaphragm 14 only connects the bottom box girder 11 and the top box girder 13. Thus, it only serves to block the deformation tendency of the box girder web 12. To further improve the stability of the steel box girder unit 1, that is, to improve the stability of the steel-concrete composite beam 100, the transverse diaphragm 14 is connected to the two box girder webs 12 at both ends along the width direction of the viaduct 200. Specifically, the periphery of the transverse diaphragm 14 is connected to the bottom box girder 11, the box girder web 12, and the top box girder web 13 by welding or bolting. Thus, when the box girder web 12 has a tendency to deform, one end of the transverse diaphragm 14 has tensile stress, and the other has thrust, thereby resisting the possibility of deformation of the steel box girder unit 1, and further improving the stability of the steel-concrete composite beam 100.
[0040] Further, please refer to Figure 1The diaphragm 14 is provided with through holes 141. To further enhance the resistance of the diaphragm 14 to the deformation tendency of the box girder 12, the diaphragm 14 is provided with through holes 141. The design and location of the through holes 141 are carefully calculated to ensure that the overall structural strength and safety are improved while withstanding pressure. Simultaneously, the through holes 141 also improve ventilation and heat dissipation performance. The perforations in the diaphragm 14 effectively increase airflow, especially in the steel-concrete composite beam 100 which requires good ventilation. Through the through holes 141, air can flow freely, aiding in heat dissipation. Furthermore, it helps reduce weight and save costs. Without affecting structural strength, the perforations in the diaphragm 14 can reduce the overall weight, significantly reducing material usage and thus saving costs. On the other hand, the through holes 141 in the diaphragm 14 facilitate installation and maintenance. The through holes 141 on the diaphragm 14 can also be used to install various equipment or components, such as pipes and cables. The design of the through holes 141 makes the installation process simpler and faster. At the same time, during future maintenance, inspection and repair can also be carried out through these through holes 141, which greatly improves the convenience of maintenance.
[0041] In summary, the reasons for providing the through holes 141 in the diaphragm 14 are varied, taking into account both the functionality of the structure and its practicality and economy. Through reasonable design and calculation, it is ensured that the diaphragm 14 can still meet various usage requirements even after being perforated, thus guaranteeing the stability and safety of the overall structure.
[0042] Further, please refer to Figure 1 Multiple diaphragms 14 are provided, evenly spaced along the length of the steel box unit 1. It is understood that, since the steel box unit 1 is elongated, the length of a single diaphragm 14 that can contribute to stability is limited. Therefore, to further ensure the stability of the entire steel-concrete composite beam 100, multiple diaphragms 14 are provided, evenly spaced along the length of the steel box unit 1, thus further ensuring the overall stability and reliability of the steel-concrete composite beam 100.
[0043] In addition, please refer to Figure 1The transverse linkage 2 includes a connecting steel plate 21, the two ends of which are bolted to the box body of the steel box unit 1. It can be understood that the steel-concrete composite beam 100 is formed by arranging multiple steel box units 1 sequentially along the width direction of the viaduct 200, and then connected by the transverse linkage 2. To improve the reliability of the connection between the steel box units 1, the transverse linkage 2 includes a connecting steel plate 21, the two ends of which are bolted to the box body of the steel box unit 1. Thus, by using the connecting steel plate 21, utilizing the material's strength, and by employing bolted connections, the multiple steel box units 1 are connected to each other.
[0044] Further, please refer to Figure 1 Multiple connecting steel plates 21 are provided, evenly spaced along the length of the steel box unit 1. It is understood that, in order to ensure higher reliability of the connection between adjacent steel box units 1, multiple connecting steel plates 21 are provided, evenly spaced along the length of the steel box unit 1. This ensures the reliability of the connection between adjacent steel box units 1, thereby further guaranteeing the reliability of the steel-concrete composite beam 100.
[0045] In addition, please refer to Figure 1 The steel-concrete composite beam 100 also includes multiple planar top plates 3, each of which is erected between the steel box units 1 to serve as a support surface for concrete pouring. It is understood that concrete needs to be poured onto the box top plates 13 of the steel box units 1. To increase the support area of the box top plates 13 and thus bear more concrete, the steel-concrete composite beam 100 also includes multiple planar top plates 3, each of which is erected between the steel box units 1 to serve as a support surface for concrete pouring. This increases the total amount of concrete that the upper surface of the steel-concrete composite beam 100 can bear, thereby ensuring the stability of the constructed viaduct 200.
[0046] This utility model also proposes an elevated bridge 200, which includes the steel-concrete composite beam 100. The specific structure of the steel-concrete composite beam 100 is as described in the above embodiments. Since the elevated bridge 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.
[0047] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A steel-concrete composite beam, characterized in that, include: Multiple steel box units are provided, and each steel box unit is arranged sequentially along the width direction of the viaduct. as well as, A cross-connecting mechanism is disposed between each of the steel box units to connect each of the steel box units; The steel box unit includes: a box bottom plate, which extends along the length of the viaduct; Two box webs are respectively protruding from both ends of the box bottom plate along its width direction; a box top plate is provided covering the box bottom plate and is respectively connected to the two box webs along its width direction. The steel box unit also includes a transverse partition, which protrudes from the bottom plate of the box and is connected to the top plate of the box; The transverse diaphragm is connected to the two box girder webs at both ends along the width direction of the viaduct. The diaphragm is provided with through holes; Multiple transverse partitions are provided and are evenly spaced along the length of the steel box unit.
2. The steel-concrete composite beam as described in claim 1, characterized in that, The horizontal linkage mechanism includes a connecting steel plate, the two ends of which are bolted to the box body of the steel box unit.
3. The steel-concrete composite beam as described in claim 2, characterized in that, Multiple connecting steel plates are provided and are evenly spaced along the length of the steel box unit.
4. The steel-concrete composite beam as described in claim 1, characterized in that, The steel-concrete composite beam also includes multiple planar top plates, each of which is erected between the steel box units to serve as a support surface for concrete pouring.
5. An elevated bridge, characterized in that, The viaduct includes a steel-concrete composite beam as described in any one of claims 1-4.