Steel reinforced concrete bridge tower structure

Abstract

The utility model relates to the technical field of bridge tower structures, in particular to a steel reinforced concrete bridge tower structure. In order to solve the problems that large-scale steel structure installation and concrete pouring work of a bridge tower usually need to be completed on site, particularly concrete pouring is often affected by weather and seasons, the construction period is long, and the construction period is prone to being delayed due to external factors such as weather and material supply, the following technical scheme is provided. The main body framework comprises a plurality of groups of longitudinal steel pipes, a plurality of groups of transverse steel pipes are connected between every two adjacent groups of longitudinal steel pipes, and the longitudinal steel pipes are communicated with the transverse steel pipes. According to the utility model, the construction efficiency and the quality control are improved, the bending resistance, the compression resistance and the earthquake resistance are enhanced, the earthquake resistance stability is improved, the stability of the bridge tower under the strong wind condition is improved, the structural performance, the construction efficiency and the safety of the bridge tower are all optimized, and the bridge tower is suitable for various complex environmental conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge towers, in particular to a steel-concrete bridge tower structure. Background Art

[0002] The steel-concrete bridge tower structure is a composite structure that combines steel and concrete. It is commonly used in high-strength and high-load-bearing building structures such as long-span bridges, high towers, and wind turbines. The basic feature of this structure is that it uses the high strength of steel and the good compression properties of concrete to jointly bear external loads and optimize the mechanical properties and durability of the overall structure. Under traditional construction methods, bridge towers usually require large-scale on-site steel structure installation and concrete pouring. In particular, concrete pouring is often affected by weather and seasons, resulting in a long construction period and prone to construction delays caused by external factors such as weather and material supply. In view of this, the utility model proposes a steel-concrete bridge tower structure. Utility Model Content

[0003] The purpose of the utility model is to propose a steel-concrete bridge tower structure to address the problem in the background technology that bridge towers usually require large-scale steel structure installation and concrete pouring work to be completed on site, especially that concrete pouring is often affected by weather and seasons, resulting in a long construction period and prone to construction delays caused by external factors such as weather and material supply.

[0004] The technical solution of the present invention is as follows: a steel-concrete bridge tower structure, including a main frame, the main frame including multiple groups of longitudinal steel pipes, multiple groups of transverse steel pipes are connected between two adjacent groups of longitudinal steel pipes, the longitudinal steel pipes are communicated with the transverse steel pipes, the main frame also includes obliquely arranged inclined steel pipes, both ends of the oblique steel pipes are fixedly connected with connecting plates, the connecting plates are installed at the connection between the longitudinal steel pipes and the transverse steel pipes, the interiors of the longitudinal steel pipes, transverse steel pipes and oblique steel pipes are all poured with concrete; the concrete layer poured at the position of the main frame is cast and shaped by a template; flanges are installed at both ends of the longitudinal steel pipes, the flanges are used to connect and fix the multiple groups of main frames arranged longitudinally; a guide component is arranged on the outside of the longitudinal steel pipes, the guide component is used to guide when another group of main frames is installed above the main frame.

[0005] Optionally, multiple groups of studs are welded to the outer wall of the longitudinal steel pipe, and the multiple groups of studs at the same height are distributed in a circular array.

[0006] Optionally, a plurality of groups of first stiffening ribs arranged at equal intervals are fixedly connected to the inner wall of the longitudinal steel pipe, and second stiffening ribs fixedly connected to the inner wall of the longitudinal steel pipe are arranged below the first stiffening ribs.

[0007] Optionally, a casting hole is provided on the connecting plate and the longitudinal steel pipe, and an exhaust hole is provided on the side of the casting hole, which is provided on the connecting plate and the longitudinal steel pipe. The inner diameter of the casting hole is larger than the inner diameter of the exhaust hole, and the longitudinal steel pipe is connected to the oblique steel pipe through the casting hole and the exhaust hole.

[0008] Optionally, the outer side of the concrete layer is provided with streamlined rounded corners.

[0009] Optionally, the flange is provided with a plurality of groups of connection holes, the plurality of groups of connection holes are distributed in a circular array, and the positions of the connection holes on the upper and lower groups of flanges correspond to each other.

[0010] Optionally, the guide assembly includes a first positioning block fixedly connected to the outer wall of the longitudinal steel pipe, the first positioning block is fixedly connected to a flange set at the bottom of the longitudinal steel pipe, a guide sleeve is installed in the first positioning block, a guide rod is slidably connected in the guide sleeve, the bottom of the guide rod is fixedly connected to an insertion rod, a second positioning block is slidably connected to the insertion rod, one end of the second positioning block is fixedly connected to the longitudinal steel pipe, and the second positioning block is fixedly connected to the flange set at the top of the longitudinal steel pipe.

[0011] Optionally, the diameter of the insertion rod is smaller than the diameter of the guide rod.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] The utility model is characterized by the arrangement of the main frame and the concrete layer, and the concrete inside the main frame is prefabricated before construction, thereby reducing on-site construction time and complexity and improving construction efficiency through the construction method combined with the on-site casting of the concrete layer. Moreover, since the concrete poured inside the main frame does not need to be fully cured before being transported to the site, the utility model is particularly suitable for large-scale bridge projects with tight construction schedules.

[0014] The lattice-type main frame structure provides the constructed towers with excellent bending resistance. The concrete filling enhances their compressive properties. The first and second stiffening ribs inside the longitudinal steel tubes further enhance the stability and seismic resistance of the structure, enabling the towers to withstand extreme loads and vibrations and adapt to various complex environmental conditions.

[0015] The streamlined rounded corners of the concrete layer are further designed to reduce wind resistance and improve the stability of the bridge tower in strong wind conditions;

[0016] In summary, the utility model improves construction efficiency and quality control, enhances bending, compression and seismic resistance, improves seismic stability, and improves the stability of the bridge tower under strong wind conditions, so that the structural performance, construction efficiency and safety of the bridge tower are optimized and adaptable to various complex environmental conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural diagram of a steel-concrete bridge tower structure is given;

[0018] Figure 2 for Figure 1 Schematic diagram of the cross-section structure;

[0019] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the concrete layer;

[0021] Figure 5 for Figure 1 A magnified schematic diagram of point B in the middle;

[0022] Figure 6 This is a schematic diagram of the disassembled structure of the guide component.

[0023] Reference numerals:

[0024] 1. Main frame; 11. Longitudinal steel pipe; 12. Horizontal steel pipe; 13. Connecting plate; 14. Oblique steel pipe;

[0025] 111, stud; 112, first stiffening rib; 113, second stiffening rib; 131, casting hole; 132, exhaust hole;

[0026] 2. Concrete layer; 3. Flange; 31. Connection hole;

[0027] 4. Guide assembly; 41. First positioning block; 42. Guide sleeve; 43. Guide rod; 44. Insert rod; 45. Second positioning block. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] Example

[0034] like Figure 1 、 Figure 2 and Figure 4 As shown, the utility model proposes a steel-concrete bridge tower structure, including multiple groups of main frames 1 arranged longitudinally. The main frames 1 include four groups of longitudinal steel pipes 11. Two groups of transverse steel pipes 12 are connected between two adjacent groups of longitudinal steel pipes 11. The longitudinal steel pipes 11 are connected to the transverse steel pipes 12, so that when concrete is poured into the longitudinal steel pipes 11, concrete is poured into the transverse steel pipes 12 simultaneously. The main frame 1 also includes inclined inclined steel pipes 14. Both ends of the inclined steel pipes 14 are fixedly connected with connecting plates 13. The connecting plates 13 are installed at the connection between the longitudinal steel pipes 11 and the transverse steel pipes 12. The inclined steel pipes 14 are fixedly connected to the longitudinal steel pipes 11 and the transverse steel pipes 12 through the connecting plates 13 to form a steel structure lattice-type whole, thereby enhancing the bending and shear resistance of the structure. The inclined steel pipes 14 are used to provide a force transmission path and enhance the force performance at the node. The interiors of the longitudinal steel tubes 11, transverse steel tubes 12, and diagonal steel tubes 14 are all poured with concrete. The steel structure provides strength and rigidity, while the concrete provides compressive resistance and durability. The main frame 1 is welded together, and after welding, concrete is poured inside. The prefabricated sections are transported to the site for installation, ensuring structural stability and construction safety. By splitting the bridge towers into multiple longitudinal segments and constructing them in sections, construction efficiency is improved and on-site installation is facilitated.

[0035] Furthermore, multiple groups of studs 111 are welded to the outer wall of the longitudinal steel tube 11. These groups of studs 111 are arranged in a circular array at the same height to enhance interfacial bonding. Multiple groups of equally spaced first stiffening ribs 112 are fixedly attached to the inner wall of the longitudinal steel tube 11. Below these first stiffening ribs 112 are second stiffening ribs 113 fixedly attached to the inner wall of the longitudinal steel tube 11. These ribs enhance the local stiffness and stability of the longitudinal steel tube 11 and constrain concrete expansion under compressive conditions on the bridge tower.

[0036] For further information, see Figure 3 A pouring hole 131 is commonly opened on the connecting plate 13 and the longitudinal steel pipe 11. An exhaust hole 132 is also provided on the side of the pouring hole 131, which is commonly opened on the connecting plate 13 and the longitudinal steel pipe 11. The inner diameter of the pouring hole 131 is larger than the inner diameter of the exhaust hole 132. The longitudinal steel pipe 11 is connected to the oblique steel pipe 14 through the pouring hole 131 and the exhaust hole 132 to ensure smooth filling of concrete and prevent the formation of voids.

[0037] Specifically, it also includes a concrete layer 2 cast at the position of the main frame 1. The concrete layer 2 is cast and shaped through a formwork. The main frame 1 is covered with concrete on the outside of the bridge tower to form a thin-walled tower limb. In this way, the deadweight of the structure is reduced and the corrosion resistance of the main frame 1 is improved. The outside of the concrete layer 2 is a streamlined rounded corner setting to minimize wind resistance. A certain height difference is reserved between the casting height of the concrete layer 2 and the top of the main frame 1. The top of the concrete layer 2 is about 30 cm lower than the top of the main frame 1. After the upper group of main frames 1 are prefabricated, they are fixed to the reserved part of the lower group of main frames 1 by connecting with a flange 3, the top of the concrete layer 2 is roughened, and the next section of the structure is cast.

[0038] Further, such as Figure 5 and Figure 6 As shown, the tower structure includes flanges 3 mounted at both ends of a longitudinal steel tube 11. These flanges 3 are used to connect and secure multiple longitudinally arranged main frame frames 1. The flanges 3 are provided with multiple sets of connection holes 31 arranged in a circular array. The connection holes 31 on the upper and lower flanges 3 correspond to each other, facilitating bolt connection between the upper and lower flanges 3 and the main frame frames 1.

[0039] Furthermore, the above-mentioned bridge tower structure also includes a guide assembly 4 disposed outside the longitudinal steel tube 11. The guide assembly 4 is used to provide guidance when another set of main frame 1 is installed above the main frame 1. The guide assembly 4 includes a first positioning block 41 fixedly connected to the outer wall of the longitudinal steel tube 11. The first positioning block 41 is fixedly connected to the flange 3 provided at the bottom of the longitudinal steel tube 11 and moves synchronously with the longitudinal steel tube 11. A guide sleeve 42 is mounted in the first positioning block 41. A guide rod 43 is slidably connected to the guide sleeve 42, facilitating guidance. A plug rod 44 is fixedly connected to the bottom of the guide rod 43. A second positioning block 45 is slidably connected to the plug rod 44. One end of the second positioning block 45 is fixedly connected to the longitudinal steel tube 11, and the second positioning block 45 is fixedly connected to the flange 3 provided at the top of the longitudinal steel tube 11. The plug rod 44 has a smaller diameter than the guide rod 43. The second positioning block 45 is fixed to the side of the fixed longitudinal steel tube 11. When the plug rod 44 is inserted into the second positioning block 45, it can guide the main frame 1 above. The upper main frame 1 is installed by hoisting. Since hoisting causes the main frame 1 to rotate, misaligning the connection holes 31, the guide rod 43 is inserted through the guide sleeve 42, and then the insertion rod 44 is inserted into the second positioning block 45 to guide and position the hoisted main frame 1 accurately. After the upper main frame 1 is installed, the first positioning block 41 and the second positioning block 45 are used to strengthen the structural strength while the upper concrete layer 2 is poured.

[0040] In this embodiment, the main frame 1 is first prefabricated as a whole in the factory, including the longitudinal steel pipe 11, the transverse steel pipe 12, the connecting plate 13, the oblique steel pipe 14, the first stiffening rib 112 and the second stiffening rib 113, which are fixed to each other by welding. After that, concrete is poured inside the longitudinal steel pipe 11, the transverse steel pipe 12 and the oblique steel pipe 14, and the prefabrication is completed after the bolts 111 are welded to the outer wall of the longitudinal steel pipe 11. The prefabricated main frame 1 is transported to the construction site in sections and prepared for installation on site. After the first group of main frames 1 at the bottom is fixed, a formwork is set on its outside to complete the pouring of the concrete layer 2. After the pouring of the concrete layer 2 is completed, the concrete layer 2 is cured.

[0041] The second main frame 1 is then hoisted above the first, closer to the first. Since the second main frame 1 is now lifted by the crane, workers can adjust its position by pushing it. Guide rods 43 are inserted into guide sleeves 42, and the position of the lifted second main frame 1 is adjusted so that the insertion rods 44 can be inserted into the second positioning blocks 45. Following the same method, multiple guide rods 43 are inserted through the guide sleeves 42, and the bottom insertion rods 44 are inserted into the second positioning blocks 45 to ensure accurate positioning of the second main frame 1. After the crane lowers the second main frame 1, the installation position is accurate. Multiple flanges 3 are connected via bolts through the connection holes 31, and the guide rods 43 are removed. The top of the first concrete layer 2 is roughened, formwork is installed, and the second concrete layer 2 is poured. The second concrete layer 2 is then cured, and the subsequent main frames 1 are installed and the concrete layers 2 are poured and cured to form the bridge tower body.

[0042] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A steel-concrete bridge tower structure, characterized in that: include: A main frame (1), the main frame (1) comprising a plurality of groups of longitudinal steel pipes (11), a plurality of groups of transverse steel pipes (12) being connected between two adjacent groups of the longitudinal steel pipes (11), the longitudinal steel pipes (11) being in communication with the transverse steel pipes (12), the main frame (1) further comprising obliquely arranged inclined steel pipes (14), both ends of the inclined steel pipes (14) being fixedly connected with connecting plates (13), the connecting plates (13) being installed at the connection between the longitudinal steel pipes (11) and the transverse steel pipes (12), the interiors of the longitudinal steel pipes (11), the transverse steel pipes (12) and the oblique steel pipes (14) being all poured with concrete; A concrete layer (2) is poured at the position of the main frame (1), and the concrete layer (2) is cast and shaped using a template; Flanges (3) installed at both ends of the longitudinal steel pipe (11), the flanges (3) being used to connect and fix multiple groups of main body frames (1) arranged longitudinally; A guide assembly (4) is arranged outside the longitudinal steel pipe (11), and the guide assembly (4) is used for guiding when another set of main frame (1) is installed above the main frame (1).

2. The steel-concrete bridge tower structure according to claim 1, characterized in that: Multiple groups of studs (111) are welded to the outer wall of the longitudinal steel pipe (11), and the multiple groups of studs (111) at the same height are distributed in a circular array.

3. The steel-concrete bridge tower structure according to claim 2, characterized in that: The inner wall of the longitudinal steel pipe (11) is fixedly connected to a plurality of groups of first stiffening ribs (112) arranged at equal intervals, and second stiffening ribs (113) fixedly connected to the inner wall of the longitudinal steel pipe (11) are arranged below the first stiffening ribs (112).

4. The steel-concrete bridge tower structure according to claim 3, characterized in that: The connecting plate (13) and the longitudinal steel pipe (11) are both provided with a casting hole (131); a vent hole (132) is also provided on the side of the casting hole (131) and is both provided on the connecting plate (13) and the longitudinal steel pipe (11); the inner diameter of the casting hole (131) is larger than the inner diameter of the vent hole (132); the longitudinal steel pipe (11) is connected to the oblique steel pipe (14) through the casting hole (131) and the vent hole (132).

5. The steel-concrete bridge tower structure according to claim 4, characterized in that: The outer side of the concrete layer (2) is arranged with streamlined rounded corners.

6. The steel-concrete bridge tower structure according to claim 5, characterized in that: The flange (3) is provided with a plurality of connection holes (31), the plurality of connection holes (31) are distributed in a ring array, and the connection holes (31) on the upper and lower flanges (3) correspond in position.

7. The steel-concrete bridge tower structure according to claim 6, characterized in that: The guide assembly (4) comprises a first positioning block (41) fixedly connected to the outer wall of the longitudinal steel pipe (11), the first positioning block (41) being fixedly connected to a flange (3) provided at the bottom of the longitudinal steel pipe (11), a guide sleeve (42) being installed in the first positioning block (41), a guide rod (43) being slidably connected in the guide sleeve (42), a plug rod (44) being fixedly connected to the bottom of the guide rod (43), a second positioning block (45) being slidably connected to the plug rod (44), one end of the second positioning block (45) being fixedly connected to the longitudinal steel pipe (11), and the second positioning block (45) being fixedly connected to the flange (3) provided at the top of the longitudinal steel pipe (11).

8. The steel-concrete bridge tower structure according to claim 7, characterized in that: The diameter of the insertion rod (44) is smaller than the diameter of the guide rod (43).

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