Arch bridge construction structure with framework wrapped with concrete

Abstract

The utility model discloses an arch bridge construction structure for a framework wrapped with concrete, which comprises more than two spandrel girders, a supporting cross beam is arranged above the spandrel girders, a cable saddle is arranged on the supporting cross beam, and the cable saddle is used for being externally connected with an arch bridge inhaul cable; a lengthened beam is arranged on the bearing beam; connecting grooves are formed in the ends of the lengthened beams, connecting elements are inserted into the connecting grooves, and the connecting grooves are filled with media for reinforcement; a positioning plate is arranged on the side wall of the connecting element, a positioning opening corresponding to the positioning plate is formed in the end of the lengthened beam, the positioning plate extends into the positioning opening to limit the connecting element, the connecting groove penetrates through the positioning opening, an inserting opening is formed in the bottom of the positioning opening and used for inserting a reinforcing steel bar, and an avoiding hole allowing the reinforcing steel bar to penetrate through is formed in the positioning plate. The problems that on the basis of an existing large-span arch bridge structure, when the length of a bearing beam is increased, the assembling difficulty is large, and the efficiency is low are solved.

Description

Technical Field

[0001] The utility model relates to an arch bridge construction structure, in particular to an arch bridge construction structure for a skeleton wrapped with concrete. Background Art

[0002] In the development of modern bridge engineering, higher requirements are put forward in terms of how to ensure structural safety, improve construction efficiency, optimize material use and reduce costs, especially in the construction of large-span arch bridges. Arch bridges have been widely used in many bridge projects due to their elegant shape, structural efficiency and good economy. However, with the increase of design span and the complexity of terrain and geological conditions, its construction structure also needs to add more load-bearing and transverse and longitudinal connection systems.

[0003] At present, arch bridges with large spans usually need to include two or more load-bearing beams and extended beam structures. In the actual construction process, in order to enhance the safety and stability of the arch bridge structure, the load-bearing beam is designed as a multi-beam structure. On the one hand, it can disperse the load and reduce the structural risk caused by load concentration. On the other hand, supporting beams and cable saddles can be set to provide fulcrums for the cables, effectively reduce cable vibration, reduce the risk of cable fatigue, and maintain the balance and stability of the overall structure. In actual construction, there are certain differences in the environmental requirements of long-span arch bridges in different regions. For convenience, it is common to use different steel bars for connection. When long-span arch bridges usually have different steel bar size requirements in different sections, some transverse and longitudinal connection structures are often difficult to assemble and inefficient. It is common to use bolts to assemble steel bars to lengthen the length of the load-bearing beam. During the lengthening process, it is often necessary to increase welding points or use locking to connect and reinforce. For load-bearing parts, there may also be a method of setting up a skeleton wrapped in concrete to strengthen the structure, thereby improving the shear resistance and bending resistance at the node. Therefore, it is worth studying how to optimize the load transfer of the load-bearing structure on the skeleton structure from the perspective of economy and resource conservation, and adapt to more complex terrain and support conditions. Utility Model Content

[0004] The utility model aims to provide an arch bridge construction structure for a skeleton wrapped with concrete, in order to improve the problem of greater difficulty and lower efficiency in assembly when the length of the load-bearing beam is lengthened on the basis of the existing large-span arch bridge structure.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A construction structure of an arch bridge with a skeleton wrapped with concrete, comprising more than two load-bearing beams, a supporting crossbeam being provided above the load-bearing beam, a cable saddle being provided on the supporting crossbeam, and the cable saddle being used for externally connecting the arch bridge cable; an extension beam being provided on the load-bearing beam, and the extension beam being used for extending the reinforcement area; a connecting groove being provided at the end of the extension beam, a connecting element being inserted into the connecting groove, and the connecting groove being used for filling a medium for reinforcement; a positioning plate being provided on the side wall of the connecting element, a positioning opening corresponding to the positioning plate being provided at the end of the extension beam, and the positioning plate extending into the positioning opening to limit the connecting element, the connecting groove passing through the positioning opening, a socket being provided at the bottom of the positioning opening, the socket being used for inserting reinforcing steel bars, and an avoidance hole for the reinforcing steel bars to pass through being provided on the positioning plate. The technical concept is: by adding an extension beam to the load-bearing beam, the reinforcement area of ​​the load-bearing beam is expanded, the supporting force of the beam end and the stability of the overall bridge are improved, and the end of the extended beam adopts a connection groove combined with a connection element for efficient docking with matching degree. The connection element is used in conjunction with the positioning plate and the positioning port to achieve precise positioning and firm locking of the elements, reducing assembly errors. Secondly, a socket is set at the bottom of the positioning port for inserting reinforcing steel bars, which increases the stress-bearing surface of the structure at the beam end and strengthens the overall connection strength of the structure, so that when combined with concrete pouring, the connection can be made more secure and the local stiffness of the beam end can be enhanced.

[0007] Preferably, the width of the connecting element matches the connecting groove, and the side wall of the connecting element fits the inner wall of the connecting groove. When the ends of the two extension beams are butt-jointed, the positioning openings of the two extension beams fit each other to form a cavity, and the outer wall of the positioning plate is used to fit the cavity.

[0008] A further technical solution is that the outer contour of the positioning plate matches the inner contour of the cavity, the side wall of the connecting groove is provided with a through hole, and the connecting element is provided with a limiting hole corresponding to the through hole.

[0009] A further technical solution is that the gap between the positioning plate and the positioning opening is filled with a medium.

[0010] Preferably, there are more than two supporting beams, and two adjacent supporting beams are parallel to each other. The saddle includes a main saddle and a working saddle. The main saddle is fixed in the middle of the two supporting beams, and the working saddle is fixed on one side of the main saddle.

[0011] Preferably, a limit frame is provided on the load-bearing beam, the lower end of the limit frame is connected to the load-bearing beam, and the end of the limit frame is connected to the supporting beam; the supporting beam is limited by the limit frame on the load-bearing beam; a steel anchor beam is provided above the limit frame, and the steel anchor beam is fixed to the limit frame by bolts.

[0012] Preferably, a reinforcing tube is provided at the lower end of the load-bearing beam, an assembly part is provided on the outer wall of the reinforcing tube, an upper end of the assembly part is connected to the load-bearing beam, and the reinforcing tube is vertically fixed below the load-bearing beam through the assembly part.

[0013] A further technical solution is that an auxiliary beam is provided between two adjacent load-bearing beams, and both ends of the auxiliary beam are connected to reinforcing pipes.

[0014] A further technical solution is that the above-mentioned assembly part is sleeved on the reinforcing tube, the side wall of the above-mentioned reinforcing tube is connected to the screw hole of the assembly part, the connection between the above-mentioned assembly part and the reinforcing tube is provided with staggered auxiliary ribs, and the upper end of the assembly part is provided with a reinforcing rib.

[0015] Preferably, a plurality of reinforcing plates are provided in the steel groove of the side wall of the lengthened beam, and the gaps between two adjacent reinforcing plates are the same.

[0016] Compared with the prior art, the beneficial effects of the utility model are at least one of the following:

[0017] The utility model can significantly expand the reinforcement area of ​​the load-bearing beam by adding an extension beam, improve the support force of the beam end and the stability of the entire bridge. Therefore, the skeleton design framework helps to adjust under various loads, which is beneficial to maintaining the stability and safety of the bridge structure. The extension beam adopts a precisely designed connection groove and connection element, as well as a matching connection with the positioning plate and the positioning port, which can greatly reduce the assembly error, achieve high-precision positioning and locking of the connection element, and thus ensure the construction quality and structural stability; the high adaptability enables it to be widely used in different geographical environments and working conditions, such as arch bridge construction with different spans and different load conditions. If necessary, the connection element and the end of the extension beam can be reinforced by pouring with a filling medium on the basis of the matching, and the reinforcing steel bar is inserted through the socket at the bottom of the positioning port. Combined with the filling medium, not only the local stiffness of the connection part is enhanced, but also the overall connection strength and durability are improved.

[0018] The extended beam of the utility model strengthens the load on the load-bearing beam, so that the load transfer between the load-bearing beams is more uniform. With the cooperation of the saddle, the external arch bridge cable can be moved and fixed more stably, which not only increases the bearing capacity of the entire structure, but also effectively disperses the load, which is beneficial to the use design of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure distribution of the utility model.

[0020] Figure 2 It is a schematic diagram of the hole structure of the utility model.

[0021] Figure 3 It is a schematic diagram of the structure of the lengthened beam of the utility model.

[0022] Figure 4 This is a schematic diagram of the installation of the connecting element of the utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the reinforced tube of the utility model.

[0024] Figure 6 This is a schematic diagram of disassembling the lengthened beam of the utility model.

[0025] Figure 7 This is a schematic diagram of the installation of the reinforcement plate of the utility model.

[0026] Description of reference numerals:

[0027] 1-load-bearing beam, 2-supporting beam, 3-cable saddle, 4-extension beam, 5-connecting element, 6-steel anchor beam, 7-reinforcement pipe, 8-assembly, 9-reinforcement pipe, 10-reinforcement plate, 101-limiting frame, 301-main cable saddle, 302-working cable saddle, 401-connecting groove, 402-positioning port, 403-socket, 404-through hole, 501-positioning plate, 502-avoidance hole, 701-auxiliary rib, 702-reinforcement rib. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] The current construction process of arch bridges mainly starts with the construction of the arch seat, followed by the construction of the junction pier. After the cap beam is completed at the junction pier, the crane is constructed by cable. By building the crane, multiple lifting points are formed, and the skeleton of the arch bridge is assembled on the ground, and then moved to the connection point of the arch bridge by the crane for assembly. The skeleton height is about 50 or more. In principle, multiple work shifts are equipped to splice the skeleton on both sides at the same time. The skeleton adopts an assembled beam frame structure, and the skeleton is fixed on the cap beam of the junction pier. Each skeleton corresponds to a set of main cable systems, thus forming multiple lifting points on the structure. The arch seat is a reinforced concrete structure used to support the arch body. Usually, the quality of the arch seat is directly related to the stability and safety of the arch bridge. Its junction pier is the main load-bearing structure of the bridge next to the arch seat, and it needs to be ensured to be stable and reliable. The cap beam provides a link structure between the arch and the junction pier on the junction pier, and is also an important structure for transmitting loads.

[0030] Prepare and build enough and efficient lifting equipment. The lifting equipment will be distributed at the key positions of the arch bridge construction to lift the various load-bearing structures of the arch bridge. Usually, the arch bridge is composed of several interrelated and fixed load-bearing structures. Its load-bearing structure is generally built with a skeleton built with steel bars. Specifically, the prefabricated arch bridge skeleton parts on the ground are hoisted in sections to the designed position of the arch bridge using the built lifting equipment. It is necessary to locate and stabilize the connection during the hoisting process to ensure that each component is locked according to the design requirements. Usually, after the arch bridge components are in place, the connection points are spliced. According to the design requirements, bolts, welding or other connection methods are used to ensure that the components are firmly combined. Finally, the tension and position of each component of the arch bridge are adjusted to ensure that the geometry and mechanical properties of the entire arch bridge meet the design requirements. After the skeleton is installed and welded, the cable tension is gradually released. After the skeleton is poured, all the arch rib cables are removed.

[0031] Embodiment 1:

[0032] refer to Figures 1 to 3 As shown, one embodiment of the utility model is an arch bridge construction structure for a skeleton wrapped with concrete, including more than two load-bearing beams 1, through which the load of the structure is transmitted, and its load mainly consists of deadweight and external load, which is transmitted to the piers or supports through its own strength and rigidity, thereby ensuring the safety and stability of the bridge.

[0033] For reference, the load-bearing beam 1 can be made of steel with high strength, toughness and rigidity. The shape of the load-bearing beam 1 is generally an I-shaped one. The I-shaped load-bearing beam 1 has high strength and rigidity and is suitable for bearing large loads and bending forces. And the I-shaped splicing can effectively improve the overall rigidity and stability of the beam.

[0034] A support beam 2 is arranged above the load-bearing beam 1, wherein the support beam 2 plays an important role in the construction structure of the skeleton-wrapped concrete arch bridge. The main function of the support beam 2 is to provide support and stability for the load-bearing beam, and the support beam 2 can balance and distribute the load of the overall structure. Among them, the support beam 2 uses its own material strength and stiffness to transfer the load between the load-bearing beams 1, while maintaining the stability and levelness of the load-bearing beam 1, to avoid the load being concentrated at a certain point of the load-bearing beam 1 and causing structural instability.

[0035] The supporting crossbeam 2 is provided with a saddle 3, which is used to connect the cables of the arch bridge. The saddle 3 ensures that the cables of the arch bridge can be fixed on the load-bearing beam 1, and the cables are used to transfer the bridge deck load on the arch bridge. The installation process is convenient for adjusting the bridge assembly and transferring the load. The saddle 3 provides a reliable fixing point on the supporting crossbeam 2, so that the tension of the cables can act on the load-bearing beam 1 through the supporting crossbeam 2. The load-bearing beam 1 is provided with an extension beam 4, which is used to extend the reinforcement area. By setting the extension beam 4 on the load-bearing beam 1, partial area reinforcement can be carried out to further improve the stability and bearing capacity of the arch bridge structure.

[0036] For reference, at least two load-bearing beams 1 are built at predetermined positions on the ground, and supporting beams 2 are built above the load-bearing beams 2 according to the design, so as to balance and distribute the load of the whole structure through supporting beams 2. The installation of supporting beams 2 needs to ensure levelness and stability. Then, saddles 3 are installed on supporting beams 2, and saddles 3 are used to fix the cables of the arch bridge later.

[0037] refer to Figure 3 and Figure 4 As shown, a connection groove 401 is provided at the end of the extension beam 4, and a connection element 5 is inserted into the connection groove 401. The connection groove 401 is used for filling a medium for reinforcement; wherein the filling medium can be existing concrete, and the filling medium plays a role in curing and strengthening the connection part in the connection groove 401, thereby improving the reliability and stability of the connection between the extension beam 4 and the original structure, and reducing the structural risk caused by the weakness of the connection part.

[0038] The side wall of the connecting element 5 is provided with a positioning plate 501, wherein the positioning plate 501 adopts a rectangular structure, and the positioning plates 501 are distributed on both sides of the connecting element 5. The connecting element 5 and the positioning plate 501 can be welded or processed in an integral forging manner, and the positioning plate 501 is fixedly connected to the connecting element 5, so that the force of the connecting element 5 on the lengthened beam 4 is consistent and stable, thereby ensuring the mechanical properties of the structure.

[0039] The end of the lengthened beam 4 is provided with a positioning hole 402 corresponding to the positioning plate 501 , wherein the positioning hole 402 cooperates with the positioning plate 501 to ensure the accurate position of the connecting element 5 during the installation process, and the positioning plate 501 extends into the positioning hole 402 to restrict the connecting element 5 .

[0040] For reference, the contours of the positioning plate 501 and the positioning opening 402 match each other. When the positioning plate 501 and the positioning opening 402 fit together, the vertical and horizontal positions of the connecting element 5 are limited to the connecting groove 401, thereby ensuring that the position stability of the connecting element 5 when a load is applied is relatively stable, and also facilitating assembly by the staff.

[0041] The above-mentioned connecting groove 401 passes through the positioning opening 402, so that the connecting element 5 passes through the positioning opening 402 and extends into the connecting groove 401. The bottom of the above-mentioned positioning opening 402 is provided with a socket 403, and the above-mentioned socket 403 is used to insert reinforcing steel bars, and the reinforcing steel bars are used to connect between two adjacent extension beams 4, thereby additionally increasing the stability of the positioning plate 501 in the positioning opening 402 during the construction process.

[0042] For reference, after the connection groove 401 is filled with a medium, the medium and the reinforced steel bars can significantly improve the stability of the structural connection part, and the reinforced steel bars are a common material for improving the tensile strength of concrete structures, which can effectively improve the bearing capacity and crack resistance of the connection part and the overall structure, so that the load upper limit of the lengthened beam 4 is improved.

[0043] The positioning plate 501 is provided with an avoidance hole 502 for the reinforcement steel bar to pass through. The avoidance hole 502 is mainly used for when the reinforcement steel bar is inserted from the socket 403, the avoidance hole 502 on the positioning plate 501 allows the steel bar to pass smoothly, avoiding interference during the installation process, thereby ensuring the smooth construction and the integrity of the reinforced structure. Reduce the risk of load displacement of the connecting element 5 due to interference from the positioning plate 501 during the installation process. Therefore, the positioning port 402 and the socket 403 in the structural design not only improve the accuracy of the connection part and the overall stability of the structure. Through the use of the positioning plate 501 and the reinforcement steel bar, they jointly ensure the reliability of the connection between the end of the extension beam 4 and the load-bearing beam 1 or other structural parts and the durability of the structure.

[0044] For reference, one possible working method is to prefabricate the extension beam 4 of standard size at the prefabricated beam site, and design a connection groove 401 and a matching positioning port 402 and a socket 403 at its end. The construction team transports the prefabricated extension beam to the bridge construction site, and then uses a crane to align the extension beam with the reserved interface of the load-bearing beam 1. As the extension beam is fixed by the connecting element 5, the positioning hole on the positioning plate 501 is accurately inserted into the positioning port 402, and the socket 403 is prepared for the subsequent insertion of the reinforcing steel bar. After the connecting element is fixed, the construction personnel will fill the connection groove 401 with concrete, and insert the reinforcing steel bar so that it passes through the avoidance hole 502 on the positioning plate and is inserted into the socket 403. During the concrete hardening process, the reinforcing steel bar works together with the concrete to improve the bearing capacity and structural integrity of the interface and the extension beam itself. Through the coordinated use of precisely designed connecting elements, positioning plates and positioning ports, accurate and rapid component installation can be achieved, the construction period can be shortened, and the safety hazards caused by inaccurate docking can be reduced. Secondly, the combined effect of positioning and reinforcing steel bars improves the structural stability and bearing capacity of the connection between the load-bearing beam and the extension beam, significantly improving the safety factor of the entire bridge.

[0045] Embodiment 2:

[0046] Based on the above embodiments, reference Figure 4 and Figure 6 As shown, another embodiment of the utility model is that the width of the connecting element 5 is consistent with the connecting groove 401, and the side wall of the connecting element 5 is fitted with the inner wall of the connecting groove 401. By making the width of the connecting element 5 consistent with the connecting groove 401, the connecting element 5 can be accurately inserted into the connecting groove 401. In order to ensure the precise and tight docking of the two extension beams 4, when the ends of the two extension beams 4 are docked, the positioning openings 402 of the two extension beams 4 are fitted to each other to form a cavity, and the outer wall of the positioning plate 501 is used to fit the cavity. Its contour-fitting design can reduce errors and improve the overall rigidity and stability of the docking area of ​​the extension beam 4. Secondly, when the two extension beams 4 are docked and the positioning plate 501 fits the inner wall of the cavity, the contact area can be increased, thereby improving the structural stability; objectively, the connection strength between the extension beams 4 and the bending and shearing resistance of the overall bridge are enhanced.

[0047] Furthermore, in order to maintain good positioning and limiting effects, the outer contour of the positioning plate 501 is consistent with the inner contour of the cavity, the side wall of the connection groove 401 is provided with a through hole 404, and the connection element 5 is provided with a limiting hole corresponding to the through hole 404. Through the combination of the through hole 404 and the limiting hole, the connecting nail or fixing bolt can pass through and be fixed between the lengthened beams 4, thereby preventing the lengthened beams 4 from sliding relative to the horizontal direction. At the same time, the connecting piece set in the through hole 404 can effectively transmit force when the load acts. The connecting piece can be an existing bolt or an existing steel bar pin, so that the contact surface of the connecting element 5 and the lengthened beam 4 is more convenient to fit.

[0048] Furthermore, the gap between the positioning plate 501 and the positioning opening 402 is filled with a medium. The filling medium in the gap between the positioning plate 501 and the positioning opening 402 is mainly used to improve the overall stability of the connection, prevent loosening and leakage, and provide additional corrosion protection. The filling medium can be a variety of materials, and the specific selection depends on the design requirements and construction conditions.

[0049] For reference, the filling medium can be existing concrete, or epoxy resin can be selectively injected first, and then concrete can be filled. If necessary, silicone sealant or other elastic sealants can be filled to form a flexible waterproof layer in the joint to prevent the intrusion of water and other corrosive media.

[0050] Embodiment 3:

[0051] Based on the above embodiments, reference Figure 1 and Figure 3As shown, another embodiment of the utility model is that there are more than two supporting beams 2, and two adjacent supporting beams 2 are parallel to each other, and the saddle 3 includes a main saddle 301 and a working saddle 302, wherein the main saddle 301 is mainly used to fix the main cables of the load-bearing arch bridge structure, and the working saddle 3012 is usually used as an auxiliary fixing point for fixing secondary or temporary cables.

[0052] The above-mentioned main cable saddle 3 is fixed in the middle of the two supporting beams 2. The main cables of the arch bridge under construction need to have sufficient tension to support the bridge structure. The fixing points provided by the main cable saddle can ensure that the cables are correctly positioned and can bear the prestress and the loads borne by the arch bridge during construction and use. The main cable saddle 301 is usually located in the middle of the two supporting beams 2 to ensure that the tension of the cables can be evenly distributed.

[0053] The working saddle 302 is fixed on one side of the main saddle 301. The position of the working saddle 302 is mainly to facilitate the adjustment of the position and tension of the cable according to the construction needs, and to provide more flexible cable support and positioning. The main saddle 301 and the working saddle 302 are simultaneously applied to the arch bridge cable system on the supporting crossbeam 2, ensuring the shape and stability of the arch bridge during the construction process.

[0054] For reference, the cable span arrangement needs to ensure the spacing between the cable saddles 3, so as to ensure the uniform distribution between the cables 3, and to evenly distribute the load to avoid local overload. The installation sag of the main cable saddle 301 is about 12 meters, which ensures the uniform distribution between the cables 3, and can evenly distribute the load to avoid local overload. The diameter of the load-bearing cable is not less than 56mm in principle. The cable with a diameter can provide sufficient strength to bear the requirements of bridge structure and prestressing. The cable saddle 3 is raised and lowered by setting a winch at the hoisting point. The winch adjusts the position of the cable saddle, which can achieve more precise tension control and meet the needs of prestressing construction.

[0055] It should be noted that each cable is withdrawn in stages, with about 50% of the prestress being withdrawn each time, that is, the arch rib cable removal is completed in two batches. The purpose of completing the arch rib cable removal in batches is to control the slow transfer of the arch ribs of the arch bridge, gradually converting the load from a temporary state to a permanent state, thereby reducing damage to the structure and avoiding the uncertainty caused by sudden changes.

[0056] Embodiment 4:

[0057] Based on the above embodiments, reference Figure 2As shown, another embodiment of the utility model is that a limit frame 101 is provided on the above-mentioned load-bearing beam 1, wherein the limit frame 101 is fixed to the load-bearing beam 1 by bolts, and the main function of the limit frame 101 is to limit the position of the supporting beam 2 on the load-bearing beam 1, to avoid the lateral or longitudinal movement or displacement of the supporting beam, and to maintain the position and stability of the beam.

[0058] The lower end of the above-mentioned limit frame 101 is connected to the load-bearing beam 1, and the end of the above-mentioned limit frame 101 is connected to the supporting beam 2; wherein, the limit frame 101 is fixed to the load-bearing beam through its lower end, and the side end of the limit frame 101 is connected to the supporting beam 2, so that the limit frame 101 realizes a stable support and bearing system between the supporting beam 2 and the load-bearing beam 1, and the limit frame 101 limits the supporting beam 2 on the load-bearing beam 1, which is conducive to the supporting beam 2 to evenly and stably distribute the force to the load-bearing beam 1.

[0059] A steel anchor beam 6 is provided above the above-mentioned limit frame 101, and the above-mentioned steel anchor beam 6 is fixed to the limit frame 101 by bolts. The steel anchor beam 6 is used to provide a focused anchoring point, and by anchoring cables or prestressed tendons, a stable prestress is added to the entire structure, thereby enhancing the overall tensile and bending resistance of the structure. The steel anchor beam 6 can be fixedly connected to the limit frame 101 by bolts, and the steel anchor beam 6 can also increase the overall rigidity and strength of the limit frame, making the supporting structure more solid. The limit frame 101 and the steel anchor beam 6 provide a mutually coordinated stabilizing effect in the entire structural system, which not only ensures the stability and limiting effect of the supporting beam in the appropriate position, but also improves the stability and bearing capacity of the entire structure through the anchoring function of the steel anchor beam.

[0060] Embodiment 5:

[0061] Based on the above embodiments, reference Figure 5 As shown, another embodiment of the utility model is that a reinforcing tube 7 is arranged at the lower end of the above-mentioned load-bearing beam 1. On the one hand, the reinforcing tube 7 can be made of existing steel pipe materials. When necessary, auxiliary wiring can be carried out through the reinforcing tube 7. At the same time, the reinforcing tube 7 is placed below the load-bearing beam 1. To a certain extent, it can be used to add a vertical support to the load-bearing beam 1, which can improve the vertical bearing capacity of the structure. The outer wall of the above-mentioned reinforcing tube 7 is provided with an assembly part 8. The upper end of the above-mentioned assembly part 8 is connected to the load-bearing beam 1, and the reinforcing tube 7 is vertically fixed below the load-bearing beam 1 through the assembly part 8. Among them, under the action of the assembly part 8, the reinforcing tube 9 can help disperse the concentrated load transmitted from the load-bearing beam 1, and transmit the load to a larger area of ​​the foundation or support point through the assembly part 8, thereby reducing the pressure on a single point. Especially in the design of a structure with a large span, when the length of the load-bearing beam 1 is large, the reinforcing tube 9 can also help reduce the bending moment caused by the load in the middle area.

[0062] For reference, the provision of the reinforcing tube 7 can also provide an additional structural connection point when necessary, so as to facilitate connection with other structural members or supporting systems, thereby improving the overall complexity and reliability of the structure.

[0063] For further reference, Figure 2 As shown, an auxiliary beam 9 is provided between two adjacent load-bearing beams 1, and the two ends of the auxiliary beam 9 are connected to the reinforcing tube 7. By installing the auxiliary beam 9, the reinforcing tubes 7 of the two adjacent load-bearing beams 1 are connected by the auxiliary beam 9, thereby providing a lateral connection and increasing the integrity and stability of the entire structure. The design of the auxiliary beam 9 is conducive to load distribution to improve the ability of the structure to resist lateral displacement, especially when subjected to external lateral loads, such as wind loads and earthquakes, to keep the shape of the structure undisturbed.

[0064] For further reference, Figure 5 As shown, the above-mentioned assembly part 8 is sleeved on the reinforcing tube 7, and the side wall of the above-mentioned reinforcing tube 7 is connected with the screw hole of the assembly part 8, wherein there are multiple screw holes, and the screw holes surround the outer wall of the reinforcing tube 7. The connection between the above-mentioned assembly part 8 and the reinforcing tube 7 is provided with staggered auxiliary ribs 701. The auxiliary ribs 701 usually function to provide additional support in the structural area where the assembly part 8 is connected to the reinforcing tube 7 to enhance the stability of the connection, and can also disperse stress and improve the reinforcement effect to a certain extent.

[0065] In order to enhance the structural stability, the upper end of the assembly 8 is also provided with a reinforcing rib 702, wherein the reinforcing rib 702 is connected to the assembly 8 to increase the local structural rigidity of the assembly 8 on the side, which is conducive to dispersing the force at the connection and preventing local damage caused by stress concentration. At the same time, the connection strength and durability are improved to reduce the bending and twisting of the assembly, and improve the bending and torsion resistance. The auxiliary beam 9 is fixed on the reinforcing tube 7, and the reinforcing rib 702 and the auxiliary rib 701 are used to improve the connection between the reinforcing tube 7 and the assembly 8, so that the assembly 8 can transfer the load to the load-bearing beam 1, and also ensure the reliability of the structure and the performance under various loads.

[0066] Embodiment 6:

[0067] Based on the above embodiments, reference Figure 1 and Figure 7As shown, another embodiment of the utility model is that a plurality of reinforcing plates 10 are provided in the steel groove of the side wall of the above-mentioned lengthened beam 4, and the gaps between two adjacent reinforcing plates 10 are the same. The reinforcing plates 10 are installed in the steel groove of the side wall of the lengthened beam 4 by welding, and the cross-sectional rigidity of the lengthened beam 4 is increased by the reinforcing plates 10, which helps to reduce the deflection and deformation of the lengthened beam 4 when loaded, and maintain the stability of the structure. In particular, when the lengthened beam 4 is subjected to loads such as shear force and bending moment, the strength and durability of the lengthened beam 4 can be maintained. The reason for this is that the reinforcing plates 10 on the lengthened beam 4 enhance the transfer and dispersion of the load, and the presence of the reinforcing plates 10 can provide more local support points, especially the same spacing on the side wall of the lengthened beam can evenly disperse the load and reduce local load concentration, thereby ensuring that the entire lengthened beam structure is balanced.

[0068] The "one embodiment", "another embodiment", "embodiment", "preferred embodiment" and the like mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a specific feature, structure or characteristic is described in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the utility model.

[0069] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. An arch bridge construction structure for a frame wrapped with concrete, comprising two or more load-bearing beams (1), a supporting crossbeam (2) being provided above the load-bearing beam (1), a cable saddle (3) being provided on the supporting crossbeam (2), and the cable saddle (3) being used for externally connecting the arch bridge cable; characterized in that: The load-bearing beam (1) is provided with an extension beam (4), and the extension beam (4) is used to extend the reinforcement area; The end of the lengthened beam (4) is provided with a connection groove (401), the connection element (5) is inserted into the connection groove (401), and the connection groove (401) is used to be filled with a medium for reinforcement; the side wall of the connection element (5) is provided with a positioning plate (501), and the end of the lengthened beam (4) is provided with a positioning opening (402) corresponding to the positioning plate (501), and the positioning plate (501) extends into the positioning opening (402) to restrict the connection element (5); The connection groove (401) passes through the positioning opening (402), a socket (403) is provided at the bottom of the positioning opening (402), the socket (403) is used to insert the reinforcing steel bar, and the positioning plate (501) is provided with an avoidance hole (502) for the reinforcing steel bar to pass through.

2. The arch bridge construction structure for skeleton-wrapped concrete according to claim 1, characterized in that: The width of the connecting element (5) matches the connecting groove (401), and the side wall of the connecting element (5) fits the inner wall of the connecting groove (401). When the ends of the two extended beams (4) are butted, the positioning openings (402) of the two extended beams (4) fit together to form a cavity, and the outer wall of the positioning plate (501) is used to fit the cavity.

3. The arch bridge construction structure for skeleton-wrapped concrete according to claim 2 is characterized in that: The outer contour of the positioning plate (501) matches the inner contour of the cavity, the side wall of the connecting groove (401) is provided with a through hole (404), and the connecting element (5) is provided with a limiting hole corresponding to the through hole (404).

4. The arch bridge construction structure for skeleton-wrapped concrete according to claim 3 is characterized in that: The gap between the positioning plate (501) and the positioning opening (402) is filled with a medium.

5. The arch bridge construction structure for skeleton-wrapped concrete according to claim 1, characterized in that: There are more than two supporting crossbeams (2), and two adjacent supporting crossbeams (2) are parallel to each other. The cable saddle (3) comprises a main cable saddle (301) and a working cable saddle (302). The main cable saddle (301) is fixed to the middle of the two supporting crossbeams (2), and the working cable saddle (302) is fixed to one side of the main cable saddle (301).

6. The arch bridge construction structure for skeleton-wrapped concrete according to claim 1, characterized in that: A limiting frame (101) is provided on the load-bearing beam (1), the lower end of the limiting frame (101) is connected to the load-bearing beam (1), and the end of the limiting frame (101) is connected to the supporting crossbeam (2); the limiting frame (101) limits the supporting crossbeam (2) on the load-bearing beam (1); a steel anchor beam (6) is provided above the limiting frame (101), and the steel anchor beam (6) is fixed to the limiting frame (101) by bolts.

7. The arch bridge construction structure for skeleton-wrapped concrete according to claim 1, characterized in that: A reinforcing tube (7) is provided at the lower end of the load-bearing beam (1), an assembly part (8) is provided on the outer wall of the reinforcing tube (7), the upper end of the assembly part (8) is connected to the load-bearing beam (1), and the reinforcing tube (7) is vertically fixed below the load-bearing beam (1) through the assembly part (8).

8. The arch bridge construction structure for skeleton-wrapped concrete according to claim 7, characterized in that: An auxiliary beam (9) is provided between two adjacent load-bearing beams (1), and both ends of the auxiliary beam (9) are connected to the reinforcing tubes (7).

9. The arch bridge construction structure for skeleton-wrapped concrete according to claim 7, characterized in that: The assembly part (8) is sleeved on the reinforcing tube (7), the side wall of the reinforcing tube (7) is connected to the screw hole of the assembly part (8), the connection between the assembly part (8) and the reinforcing tube (7) is provided with staggered auxiliary ribs (701), and the upper end of the assembly part (8) is provided with a reinforcing rib (702).

10. The arch bridge construction structure for skeleton-wrapped concrete according to claim 1, characterized in that: A plurality of reinforcing plates (10) are provided in the steel groove of the side wall of the lengthened beam (4), and the gaps between two adjacent reinforcing plates (10) are the same.

Images