Adjustable modular positioning device for steel anchor beam of cable-stayed bridge

Abstract

The application provides an adjustable modular cable-stayed bridge steel anchor beam positioning device, which comprises a steel anchor beam body and a positioning mechanism; the positioning mechanism comprises two mounting plates and mounting pieces; the mounting pieces are adjustably connected to the mounting plates; the mounting pieces comprise mounting frames and plug-in plates; the mounting frames have receiving cavities; the plug-in plates are spaced apart and fixedly connected in the receiving cavities, so that the receiving cavities are divided into limiting installation parts; one end of the steel anchor beam body is lockably and slidably connected in the limiting installation part. Thus, the mounting deviation caused by the fixed connection hole position can be effectively overcome, the steel anchor beam can be quickly, accurately positioned and reliably connected during construction, and the installation efficiency and quality are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of bridge construction technology, and in particular relates to an adjustable modular cable-stayed bridge steel anchor beam positioning device. Background Technology

[0002] As a common modern bridge type, the safety and reliability of the tower anchorage structure are of paramount importance for cable-stayed bridges. The steel anchor beam, as a key force-transmitting component in a spatial cable-stayed bridge, typically employs an all-steel structural composite system of "steel anchor beam + steel bracket". In this system, the enormous cable force of the stay cables is transmitted through the steel anchor beam. Balanced horizontal forces are borne by the steel anchor beam itself, unbalanced horizontal forces are borne by the tower, and the vertical component is ultimately transmitted to the tower body through the steel bracket.

[0003] In actual construction, steel anchor beams often use the side tie plates on both sides as the main load-bearing components, with the inclination angle of the tie plates consistent with the angle of the corresponding stay cables. To enhance the overall structural integrity, the top and bottom of the tie plates are connected to the top and bottom plates, respectively, and are reinforced in multiple locations such as anchor head plates, raised anchorage zones, stiffening plates, and diaphragms to effectively disperse and transfer concentrated stress. To ensure the stability of the steel anchor beam during operation, limiting devices, such as end baffles and lateral limiting blocks, are installed in both the longitudinal and transverse directions to prevent displacement under repeated cable forces.

[0004] Currently, steel anchor beams are typically manufactured in factories and installed on-site. This means that components are processed and inspected at a specialized factory, transported to the site for secondary pre-assembly, and only after passing inspection can they be hoisted onto the tower installation platform. During installation, the steel brackets are generally first adjusted and welded to the tower wall, and then the steel anchor beams are hoisted onto the brackets to complete the assembly.

[0005] However, existing steel anchor beam structures and their installation methods have significant drawbacks: the connection holes between the steel anchor beam and the steel bracket, as well as on the assembly jig, are all fixed. This rigid connection method lacks the necessary adjustment capability, making it extremely easy for the connection holes to misalign when dimensional deviations, cumulative errors, or positioning tilts occur during the manufacturing or installation process. This not only brings great difficulties to on-site assembly and affects construction efficiency, but may also lead to a structural stress state that does not conform to the design, creating potential safety hazards. Summary of the Invention

[0006] In view of this, the purpose of this invention is to propose an adjustable modular cable-stayed bridge steel anchor beam positioning device to solve the problem that the installation deviation between the steel bracket and the steel anchor beam caused by the fixed hole position is difficult to adjust, and that it is impossible to achieve accurate positioning and reliable connection.

[0007] To achieve the above objectives, the technical solution created by this invention is implemented as follows:

[0008] An adjustable modular cable-stayed bridge steel anchor beam positioning device includes: a steel anchor beam body and a positioning mechanism;

[0009] The positioning mechanism is of two types, and the two positioning mechanisms are arranged opposite to each other along the length direction of the main body of the steel anchor beam. The positioning mechanism includes a mounting plate and a mounting component. The mounting component is adjustablely connected to the mounting plate. The mounting component includes a mounting frame and a plug-in plate. The mounting frame has a storage cavity. The number of plug-in plates is two. The two plug-in plates are fixedly connected at intervals in the storage cavity to divide the storage cavity into a limiting installation part. One end of the main body of the steel anchor beam is lockably slidably connected to the limiting installation part.

[0010] The mounting plate has a fixing part on the end face opposite to the mounting component for connecting the steel bracket.

[0011] Furthermore, the limiting installation part includes a first limiting interval and a second limiting interval that are interconnected, and the cross-sections of the first limiting interval and the second limiting interval, as well as the cross-section of the main body of the steel anchor beam, are all H-shaped.

[0012] Furthermore, the plug-in plate is provided with a first through hole, and there are multiple first through holes. The multiple first through holes are arranged at intervals along the length direction of the plug-in plate. The steel anchor beam body is provided with a second through hole, and there are multiple second through holes. The multiple second through holes are arranged at intervals along the length direction of the steel anchor beam body. The diameter of the first through hole and the second through hole are the same.

[0013] Furthermore, the mounting frame is provided with a third through hole, and there are multiple first through holes. The multiple third through holes are arranged at intervals along the length direction of the plug plate. The steel anchor beam body is provided with a fourth through hole, and there are multiple fourth through holes. The multiple second through holes are arranged at intervals along the length direction of the steel anchor beam body. The diameter of the first through hole and the second through hole are the same.

[0014] The extended axis of the first through hole intersects perpendicularly with the extended axis of the third through hole, and the extended axis of the second through hole intersects perpendicularly with the extended axis of the fourth through hole.

[0015] Furthermore, it also includes a fixing component for connecting the steel anchor beam body and the mounting component.

[0016] Furthermore, the mounting plate is provided with positioning holes, and the positioning holes are located in the middle part of the mounting plate.

[0017] Furthermore, the fixing part includes a plurality of mounting holes, which are spaced apart on the outside of the positioning hole.

[0018] Furthermore, each of the mounting plates is equipped with two mounting members, so that the two steel anchor beam bodies are installed between the two mounting plates.

[0019] Furthermore, a reinforcing plate is fixedly connected to the end face of the mounting plate opposite to the mounting component. There are two reinforcing plates, which are arranged at intervals along the length of the mounting plate.

[0020] Furthermore, the reinforcing plate is provided with reinforcing holes.

[0021] Through the above technical solution, by using two positioning mechanisms arranged opposite to each other along the length of the main body of the steel anchor beam, it is ensured that the main body of the steel anchor beam can be accurately connected and fixed to the steel bracket during installation. Specifically, firstly, the mounting component is adjustablely connected to the mounting plate, allowing the mounting component to be adjusted in multiple directions relative to the mounting plate. This actively absorbs and compensates for the dimensional deviations that may occur during the pre-embedding of the steel bracket during the construction of the cable tower, laying a solid foundation for subsequent precise positioning. At the same time, the end face of the mounting plate opposite to the mounting component is provided with a fixing part for connecting the steel bracket. This fixing part is a rigid connection end face between the positioning device and the steel bracket. The fixing part can be stably connected to the steel bracket, ensuring the overall connection stability.

[0022] Secondly, based on the good connection and stability between the mounting plate and the steel bracket, the limiting mounting part formed by the mounting frame and the two plug-in plates provides a precise guide channel for the end insertion of the steel anchor beam body. This limiting mounting part can effectively constrain the displacement of the steel anchor beam body in the up and down and left and right directions, and achieve rapid initial positioning.

[0023] Finally, the main body of the steel anchor beam is lockably slidably connected within the limiting installation part, which further improves the adjustment of the installation deviation between the main body of the steel anchor beam and the steel bracket, ensuring that the two can achieve precise positioning and reliable and stable connection. That is, the operator can finely adjust the depth of the steel anchor beam extending into the limiting installation part by sliding the main body of the steel anchor beam, thereby directly changing the effective distance between the installation part and the steel bracket to adapt to the actual installation distance on site. Then, the position of the main body of the steel anchor beam is fixed by the locking function, so that the main body of the steel anchor beam, the installation part and the installation plate form a rigid whole, thereby ensuring that the fixing part and the steel bracket can achieve a precise and stable connection in a stress-free state. Attached Figure Description

[0024] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0025] Figure 1 This is a structural schematic diagram of the positioning device provided in an exemplary embodiment of this disclosure at one angle;

[0026] Figure 2 This is a structural schematic diagram of the positioning device provided in an exemplary embodiment of this disclosure from another angle;

[0027] Figure 3 This is a schematic diagram of the positioning mechanism provided in an exemplary embodiment of this disclosure at one angle;

[0028] Figure 4 This is a schematic diagram of the positioning mechanism provided in an exemplary embodiment of this disclosure from another angle;

[0029] Figure 5 This is a schematic diagram of the structure of the support component provided in an exemplary embodiment of this disclosure.

[0030] Figure 6 This is a schematic diagram of the structure of the sheath provided in an exemplary embodiment of this disclosure;

[0031] Figure 7 This is a cross-sectional view of the sheath provided in an exemplary embodiment of this disclosure;

[0032] Figure 8 This is a schematic diagram of the structure of the reinforcing rib provided in an exemplary embodiment of this disclosure.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Steel anchor beam body; 101. Second through hole; 102. Fourth through hole; 2. Mounting plate; 201. Positioning hole; 202. Mounting hole; 3. Mounting frame; 301. Third through hole; 4. Insert plate; 401. First through hole; 5. Fixing component; 6. Reinforcing plate; 601. Reinforcing hole; 7. Reinforcing rib; 8. Support component; 801. Support frame; 802. Support screw; 803. Clamping nut; 804. Support cylinder; 9. Sheath; 901. First protective cylinder; 9011. Slot; 9012. First pad; 902. Second protective cylinder; 9021. Insert block; 9022. Second pad. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] The invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0039] In the specific embodiments provided in this disclosure, an adjustable modular cable-stayed bridge steel anchor beam positioning device is provided, with reference to... Figures 1 to 8 As shown, the adjustable modular cable-stayed bridge steel anchor beam positioning device includes: a steel anchor beam body 1 and a positioning mechanism. The number of positioning mechanisms is two, and the two positioning mechanisms are arranged opposite to each other along the length direction of the steel anchor beam body 1. The positioning mechanism includes a mounting plate 2 and a mounting component. The mounting component is adjustablely connected to the mounting plate 2. The mounting component includes a mounting frame 3 and a plug-in plate 4. The mounting frame 3 has a receiving cavity. The number of plug-in plates 4 is two, and the two plug-in plates 4 are fixedly connected at intervals in the receiving cavity to divide the receiving cavity into a limiting installation part. One end of the steel anchor beam body 1 is lockably slidably connected to the limiting installation part. The end face of the mounting plate 2 opposite to the end of the mounting component is provided with a fixing part for connecting the steel bracket.

[0040] Through the above technical solution, by using two positioning mechanisms arranged opposite to each other along the length of the main body of the steel anchor beam 1, it is ensured that the main body of the steel anchor beam 1 can be accurately connected and fixed to the steel bracket during installation. Specifically, firstly, the mounting component is adjustablely connected to the mounting plate 2 based on its position, so that the mounting component can be adjusted in multiple directions relative to the mounting plate 2. This can actively absorb and compensate for the dimensional deviation that may occur during the pre-embedding of the steel bracket in the construction of the cable tower, laying a solid foundation for subsequent accurate positioning. At the same time, the end face of the mounting plate 2 opposite to the mounting component is provided with a fixing part for connecting the steel bracket. This fixing part is a rigid connection end face between the positioning device and the steel bracket. The fixing part can be stably connected to the steel bracket, ensuring the overall connection stability.

[0041] Secondly, based on the good connection and stability between the mounting plate 2 and the steel bracket, the limiting mounting part formed by the mounting frame 3 and the two plug-in plates 4 provides a precise guide channel for the end insertion of the steel anchor beam body 1. This limiting mounting part can effectively constrain the displacement of the steel anchor beam body 1 in the up and down and left and right directions, and achieve rapid initial positioning.

[0042] Finally, the steel anchor beam body 1 is lockably slidably connected to the limiting installation part, which can further improve the adjustment of the installation deviation between the steel anchor beam body 1 and the steel bracket, ensuring that the two can achieve precise positioning and reliable and stable connection. That is, the operator can slide the steel anchor beam body 1 to finely adjust its depth of insertion into the limiting installation part, thereby directly changing the effective distance between the installation part and the steel bracket to adapt to the actual installation distance on site. Then, the position of the steel anchor beam body 1 is fixed by the locking function, so that the steel anchor beam body 1, the installation part and the installation plate 2 form a rigid whole, thereby ensuring that the fixing part and the steel bracket can achieve precise and stable connection in a stress-free state.

[0043] In some implementations, reference Figures 1 to 3 As shown, the limiting installation part includes a first limiting interval and a second limiting interval that are interconnected. The cross-sections of the first limiting interval and the second limiting interval, as well as the cross-section of the steel anchor beam body 1, are all H-shaped. Specifically, the structure of the upper and lower flanges and the middle web of the H-shaped steel anchor beam body 1 provides the steel anchor beam body 1 with strong bending and torsional stiffness.

[0044] When the end of the steel anchor beam body 1 is inserted into the H-shaped limiting installation part, the two can form a "mortise and tenon" style insertion and mating relationship, which not only ensures the smooth and stable insertion process, but also achieves comprehensive constraint on the steel anchor beam body 1 in the circumferential direction, effectively preventing the steel anchor beam body 1 from deflecting or shifting during use.

[0045] In some implementations, reference Figures 1 to 4As shown, both the plug-in plate 4 and the steel anchor beam body 1 are equipped with a mounting and fixing hole system to enable one end of the steel anchor beam body 1 to be slidably and lockably connected to the limiting installation part. Specifically, multiple first through holes 401 are spaced apart along the length of each plug-in plate 4, and multiple second through holes 101 of the same diameter are also spaced apart at the corresponding positions of the steel anchor beam body 1. The first through holes 401 and the second through holes 101 provide continuously adjustable locking and fixing points for the sliding connection and position locking of the steel anchor beam body 1 in the limiting installation part. The operator can slide one end of the steel anchor beam body 1 to the desired position. When any one of the first through holes 401 is aligned with any one of the second through holes 101, the fixing component 5 can be inserted to connect the steel anchor beam body 1 and the plug-in plate 4, which enhances the flexibility and accuracy of longitudinal adjustment.

[0046] Meanwhile, based on the first through hole 401 and the second through hole 101, a third through hole 301 and a fourth through hole 102 are also provided. The extended axis of the first through hole 401 intersects perpendicularly with the extended axis of the third through hole 301, and the extended axis of the second through hole 101 intersects perpendicularly with the extended axis of the fourth through hole 102. The mounting frame 3 is provided with a third through hole 301, and there are multiple first through holes 401. Multiple third through holes 301 are arranged at intervals along the length direction of the plug plate 4. The steel anchor beam body 1 is provided with a fourth through hole 102, and there are multiple fourth through holes 102. Multiple second through holes 101 are arranged at intervals along the length direction of the steel anchor beam body 1. Specifically, the third through holes 301 and the fourth through holes 102 can constrain the steel anchor beam body 1 from another direction (different from the direction constrained by the first through hole 401 and the second through hole 101). With the help of the fixing component 5, the steel anchor beam body 1 can be constrained from two perpendicular directions, which can significantly improve the connection stability between the steel anchor beam body 1 and the mounting component.

[0047] For example, the fixing component 5 includes a locking pin or a high-strength bolt.

[0048] In some implementations, reference Figures 1 to 4 As shown, the mounting plate 2 is provided with positioning holes 201, and the positioning holes 201 are located in the middle of the mounting plate 2. The core function of the positioning holes 201 is to provide a precise and reliable reference position for the installation of the steel bracket. Specifically, as a connecting transition component connecting the steel bracket and the mounting parts, the accuracy of the position of the mounting plate 2 is crucial. Only when the mounting plate 2 is precisely fixed on the steel bracket in the correct position through the positioning holes 201 can the position adjustment of the mounting parts with the mounting plate 2 as the reference be meaningful. In other words, the positioning holes 201 enable the mounting plate 2 to be accurately placed on the steel bracket, so that the subsequent adjustment of the mounting parts relative to the mounting plate 2 (used to compensate for the manufacturing and installation deviations of the steel anchor beam) can be carried out on a known and accurate basis, avoiding the transmission and accumulation of errors.

[0049] In some implementations, reference Figures 1 to 4 As shown, the fixing part includes mounting holes 202. There are multiple mounting holes 202, which are spaced apart on the outside of the positioning hole 201. The mounting hole 202 is designed to be "dual-purpose", that is, it is used to install the steel bracket and also to connect the mounting frame 3. By spaced apart on the outside of the positioning hole 201, the connection force between the mounting plate 2 and the steel bracket, and between the mounting frame 3 and the mounting plate 2, can be evenly diffused through the multiple mounting holes 202 on the periphery, so that the mounting plate 2 as a whole has good bending and shear resistance.

[0050] In some implementations, reference Figures 1 to 4 As shown, each mounting plate 2 has two mounting components, allowing the two steel anchor beam bodies 1 to be installed between the two mounting plates 2. Each mounting plate 2 carries two mounting components, ultimately supporting the two steel anchor beam bodies 1. This symmetrical layout ensures uniform load distribution. When the cable force of the stay cable is transmitted to the mounting components through the steel anchor beams, the force acting on a single mounting plate 2 comes from its left and right sides. The torques generated by these two sources largely cancel each other out, significantly reducing the torsional moment borne by the mounting plate 2 and its connection with the steel bracket. This ensures smooth force transmission and overall structural stability, effectively avoiding the eccentric loading problem that may result from single-point stress.

[0051] Meanwhile, by adjusting the distance between the two main steel anchor beams 1, the main steel anchor beams 1 can be adapted to steel brackets of different sizes. Specifically, when the tower structure design changes or needs to adapt to bridge types with different spans and cable forces, the lateral spacing of the steel brackets may change. In this case, there is no need to redesign and manufacture the entire positioning device. Only by adjusting the mounting plate 2 of the mounting component, the relative distance between the two mounting frames 3 can be changed, thereby driving the two main steel anchor beams 1 to move synchronously towards or away from each other, thus accurately matching the installation dimensions of the new specification steel brackets.

[0052] In some implementations, reference Figures 1 to 4 As shown, a reinforcing plate 6 is fixedly connected to the end face of the mounting plate 2 away from the mounting component. There are two reinforcing plates 6, which are arranged at intervals along the length of the mounting plate 2. The reinforcing plate 6 is provided with a reinforcing hole 601, which can expand the installation space of the mounting plate 2, making it easier to cooperate with other auxiliary components or larger steel brackets in the future.

[0053] For example, refer to Figure 8 As shown, it also includes a reinforcing rib 7, wherein the reinforcing rib 7 has a connecting flange, and the reinforcing rib 7 can be installed between two reinforcing plates 6 through the connecting flange, thereby improving the overall strength of the mounting plate 2.

[0054] In some implementations, reference Figure 5 As shown, it also includes a support component 8, wherein there are two support components 8, which are arranged opposite each other along the length of the mounting plate 2, and the support components 8 are located between two mounting parts on the same side to enhance the connection between the two mounting parts;

[0055] For example, the support assembly 8 includes a support frame 801, a support screw 802, and a clamping nut 803. A support cylinder 804 is fixedly connected to the support frame 801. The support cylinder 804 has a threaded through hole. The support screw 802 is threadedly connected to the support cylinder 804 through the threaded through hole. There are two support cylinders 804. The two support cylinders 804 are arranged opposite to each other along the length direction of the support frame 801. Each support cylinder 804 is threadedly connected to a support screw 802. Each support screw 802 is equipped with two clamping nuts 803.

[0056] When the support assembly 8 is installed between two mounting parts on the same side, the support screw 802 passes through the first through hole 401 and the second through hole 101 to pass through the plug plate 4 and the steel anchor beam body 1. At this time, the two clamping nuts 803 installed on the support screw 802 should be located on the upper and lower sides of the plug plate 4 respectively, so as to clamp and fix the plug plate 4 and the steel anchor beam body 1.

[0057] For example, the advantage of this support assembly 8 is that it can fix two mounting parts while adjusting the length. That is, the threaded connection between the support screw 802 and the support cylinder 804 can achieve length adjustment. By rotating the support screw 802, its length extending out of the support cylinder 804 can be continuously adjusted, so that the effective length of the entire support assembly 8 can be accurately adapted to the actual distance between the two mounting parts. After achieving accurate adaptation of the effective length, the two clamping nuts 803 can ensure the firmness and reliability of the fixation. That is, after the support screw 802 passes through the corresponding through holes on the plug plate 4 and the steel anchor beam body 1, a clamping nut 803 is tightened at each of its two ends (i.e., the upper and lower sides of the plug plate 4). By tightening the two clamping nuts 803, a strong axial clamping force can be generated on the support screw 802, as if a pair of forces in opposite directions are applied, firmly "clamping" the plug plate 4 and the steel anchor beam body 1 in the middle.

[0058] In some implementations, reference Figure 6 and Figure 7As shown, it also includes a sheath 9, which includes a first protective sleeve 901 and a second protective sleeve 902. The first protective sleeve 901 and the second protective sleeve 902 are fastened together. The first protective sleeve 901 is provided with a slot 9011, and the second protective sleeve 902 is provided with an insert block 9021. The end of the first protective sleeve 901 away from the slot 9011 is provided with a first pad 9012, and the end of the second protective sleeve 902 away from the insert block 9021 is provided with a second pad 9022. There are multiple slots 9011 and insert blocks 9021, and the number of each is the same. Both the first protective sleeve 901 and the second protective sleeve 902 have channels for the support screw 802 to pass through. The first protective sleeve 901 and the second protective sleeve 902 are assembled into a mounting bracket. In terms of assembly, this protects the external threads of the support screw 802. Specifically, the slot 9011 on the first sleeve 901 and the insert block 9021 on the second sleeve 902 form a simple and reliable quick-connect mechanism. During assembly, simply align the insert block 9021 and insert it into the slot 9011 to precisely align and initially close the first and second sleeves 902, forming a protective sleeve that encloses the support screw 802. At the same time, the channels of the first and second sleeves 901 and 902 completely enclose the middle section of the support screw 802, forming a physical isolation layer that can effectively prevent cement slurry, dust, and other foreign objects from directly contacting, adhering to, or corroding the threads. More importantly, the first pad 9012 and the second pad 9022 located at both ends of the sleeve have an area larger than the cross-section of the sleeve. When the sleeve 9 is assembled, the two pads can fit tightly against the surface of the insert plate 4 under the pressure of the clamping nut 803.

[0059] In some embodiments, a corrosion-resistant layer is also applied to the outer wall of the positioning device. The corrosion-resistant layer is made by sequentially applying epoxy zinc-rich primer, fluorocarbon topcoat, and polyurea coating, thereby forming a continuous and dense "protective film" on the outer wall of the steel anchor beam body 1, the outer wall of the mounting plate 2, and the outer wall of the mounting component. This physically isolates the steel from contact with corrosive agents such as water, oxygen, and chloride ions, preventing electrochemical corrosion reactions from the source.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adjustable modular positioning device for steel anchor beams of cable-stayed bridges, characterized in that, include: The main body of the steel anchor beam (1) and the positioning mechanism; The number of positioning mechanisms is two, and the two positioning mechanisms are arranged opposite each other along the length direction of the steel anchor beam body (1). The positioning mechanism includes a mounting plate (2) and a mounting component. The mounting component is positionally adjustable to the mounting plate (2). The mounting component includes a mounting frame (3) and a plug-in plate (4). The mounting frame (3) has a receiving cavity. The number of plug-in plates (4) is two, and the two plug-in plates (4) are fixedly connected at intervals in the receiving cavity to divide the receiving cavity into a limiting mounting part. One end of the anchor beam body (1) is slidably and lockably connected to the limiting installation part; the end face of the mounting plate (2) opposite to the end of the mounting part is provided with a fixing part for connecting the steel bracket; the limiting installation part includes a first limiting interval and a second limiting interval that are interconnected, and the cross-sections of the first limiting interval and the second limiting interval as well as the cross-section of the steel anchor beam body (1) are all H-shaped; when the end of the steel anchor beam body (1) is inserted into the limiting installation part which is also H-shaped, the two form a "mortise and tenon" style insertion fit relationship; The plug plate (4) is provided with a first through hole (401), and there are multiple first through holes (401). The multiple first through holes (401) are arranged at intervals along the length direction of the plug plate (4). The steel anchor beam body (1) is provided with a second through hole (101), and there are multiple second through holes (101). The multiple second through holes (101) are arranged at intervals along the length direction of the steel anchor beam body (1). The diameters of the first through holes (401) and the second through holes (101) are the same. The mounting frame (3) is provided with a third through hole (301), and there are multiple third through holes (301). The third through holes (301) are arranged at intervals along the length direction of the plug plate (4), and the steel anchor beam body (1) is provided with a fourth through hole (102). There are multiple fourth through holes (102). Multiple second through holes (101) are arranged at intervals along the length direction of the steel anchor beam body (1). The diameter of the first through hole (401) and the second through hole (101) are the same. The extension line of the axis of the first through hole (401) intersects perpendicularly with the extension line of the axis of the third through hole (301), and the extension line of the axis of the second through hole (101) intersects perpendicularly with the extension line of the axis of the fourth through hole (102). The mounting plate (2) is provided with positioning holes (201), and the positioning holes (201) are located in the middle part of the mounting plate (2); the fixing part includes mounting holes (202), and there are multiple mounting holes (202). The multiple mounting holes (202) are distributed at intervals on the outside of the positioning holes (201). The mounting holes (202) are used to install steel brackets and also to connect the mounting frame (3).

2. The adjustable modular cable-stayed bridge steel anchor beam positioning device according to claim 1, characterized in that: It also includes a fixing component (5) for connecting the steel anchor beam body (1) and the mounting component.

3. The adjustable modular cable-stayed bridge steel anchor beam positioning device according to claim 1, characterized in that: Two mounting members are installed on each of the mounting plates (2) so that the two steel anchor beam bodies (1) are installed between the two mounting plates (2).

4. The adjustable modular cable-stayed bridge steel anchor beam positioning device according to claim 1, characterized in that: A reinforcing plate (6) is fixedly connected to the end face of the mounting plate (2) away from the mounting component. There are two reinforcing plates (6), and the two reinforcing plates (6) are arranged at intervals along the length direction of the mounting plate (2).

5. The adjustable modular cable-stayed bridge steel anchor beam positioning device according to claim 4, characterized in that: The reinforcing plate (6) is provided with reinforcing holes (601).

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