Method and device for reinforcing and damping an angle steel tower

Abstract

The application provides a reinforcing and damping method and device for an angle steel tower, and belongs to the technical field of tower mast structures. The geometric size data of the angle steel tower is obtained by field surveying according to existing drawings; then, a stress model is established for the cable reinforcing system according to the geometric data of the angle steel tower, the expression of the equivalent horizontal constraint force of the angle steel tower is determined through theoretical derivation, and the installation height of the support frame in the reinforcing system of the angle steel tower is obtained through optimization of the maximum value of the equivalent horizontal constraint force; secondly, the channel steel size of the support frame is determined according to the installation height of the support frame in the reinforcing device of the angle steel tower, and the support frame is installed on the angle steel tower through a clamp; thirdly, the overall bending cable is arranged to penetrate through the tower top to the bottom, so that the overall reinforcement of the tower body is realized; finally, the local auxiliary cable is arranged to realize the local reinforcement of the tower body, and finally the reinforcing and damping device for the angle steel tower is obtained.

Description

Technical Field

[0001] This invention relates to the field of tower and mast structure technology, and in particular to a method and apparatus for reinforcing and reducing vibration of angle steel towers. Background Technology

[0002] Transmission towers, communication towers, and other lattice structures are important components of modern infrastructure, with applications spanning multiple fields such as energy and communications. With increasing service life and the frequent occurrence of extreme weather events, some in-service transmission towers have experienced reduced load-bearing capacity and insufficient stability, necessitating reinforcement. Cable reinforcement, due to its simple construction, minimal disturbance to the original structure, and excellent reinforcement effect, has become one of the important technical means in the field of transmission tower and communication tower reinforcement. Currently, existing cable reinforcement technologies for transmission towers and communication towers mainly include the following methods:

[0003] (1) In-plane prestressed cable reinforcement: This technology involves arranging high-strength cables crosswise inside the tower structure or in the plane of the main material, and applying prestress through tensioning, aiming to improve the overall stiffness of the tower to suppress displacement. Although its reinforcement effect is direct, it still has defects: First, the control requirements for the prestress value are extremely strict. If the prestress is too small, the effect will be poor, and if it is too large, it will aggravate the risk of local instability. Second, in order to achieve the ideal reinforcement effect, multiple cables are often required, which makes the construction tensioning process complicated, and the prestress synergy between the cables is difficult to guarantee, resulting in poor controllability of construction quality. (2) External cable reinforcement of the tower body: This technology uses steel cables that are inclined from the tower body nodes to the ground, and form external constraints through tensioning. Although it can effectively improve the horizontal stiffness of the structure, it also has limitations: First, the cable stays need to be anchored on the ground, which involves a large amount of work, high cost and a large amount of land resources, and is not suitable for urban or farmland environments with limited sites; Second, its reinforcement effect depends to a large extent on the stability of the anchor foundation, and has strict requirements on the foundation conditions; (3) Damped cable system, such systems (such as tuned mass dampers, damped cables, etc.) mainly consume energy and reduce vibration by providing damping, and have unique advantages in suppressing dynamic responses such as wind-induced vibration. However, its application has the following shortcomings: First, the system design is complex and needs to be tuned for specific structural modes, and the control effect on higher-order vibration modes is limited; Second, the installation accuracy requirements are high, the construction is difficult, and the later maintenance cost is high.

[0004] In summary, while existing cable reinforcement technologies each have their advantages, they generally suffer from common technical bottlenecks: a conflict between economic efficiency and adaptability, a lack of a reinforcement system that combines high efficiency, economy, and wide applicability; poor construction controllability; and strong dependence on site conditions. Therefore, there is an urgent need to develop a new cable reinforcement technology that can overcome the limitations of existing technologies and achieve an optimal balance between reinforcement effectiveness, ease of construction, economic cost, and site adaptability. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a method and apparatus for strengthening and vibration reducing angle steel towers. First, the geometric dimensions of the angle steel tower are obtained through on-site surveying based on existing drawings. Then, based on the geometric data, a force model is established for the cable-stayed reinforcement system. Through theoretical derivation, the expression for the equivalent horizontal constraint force of the angle steel tower is determined, and the installation height of the support frame in the reinforcement system is obtained by optimizing the maximum value of the equivalent horizontal constraint force. Next, based on the installation height of the support frame in the reinforcement device, the channel steel dimensions of the support frame are determined, and the support frame is installed on the angle steel tower using clamps. Third, integrally curved cables are arranged, penetrating from the top to the bottom of the tower, to achieve overall reinforcement of the tower body. Finally, local auxiliary cables are arranged to achieve local reinforcement of the tower body, ultimately resulting in a reinforcement and vibration reduction device for the angle steel tower. The specific technical solution is as follows:

[0006] On one hand, the present invention provides a method for strengthening and vibration reducing an angle steel tower, which is implemented by a device for strengthening and vibration reducing an angle steel tower, and the method includes: S1. Based on the engineering drawings, obtain the geometric dimensions of the angle steel tower through on-site surveying, including: foundation root opening, tower height, and main material inclination angle; S2. Based on the geometric dimensions of the angle steel tower, a simplified overall reinforcement model of the angle steel tower is obtained by introducing a support frame at a set height and applying reinforcement cables. S3. Based on the simplified overall reinforcement model, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained by establishing a structural mechanics model and theoretical derivation. S4. Based on the equivalent horizontal constraint, the height value of the set height of the support frame is obtained through maximum value optimization analysis. S5. Based on the height value and the geometric dimensions of the angle steel tower, the support frame is obtained by assembling channel steel components, the third clamp, and the second clamp on the angle steel tower. S6. Based on the support frame, by assembling the reinforcing cable, fixed pulley and first clamp on the angle steel tower, an overall reinforcement and vibration reduction device is obtained; S7. Based on the overall reinforcement and vibration reduction device, the reinforcement and vibration reduction device of the angle steel tower is obtained by assembling auxiliary cables, auxiliary angle steel and fourth clamp.

[0007] Optionally, in S3, based on the simplified overall reinforcement model, by establishing a structural mechanics model and theoretical derivation, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained, including: S31. Based on the overall reinforcement simplified model, the normalized vibration mode curve is obtained through the design standards for tall structures; S32. Based on the simplified overall reinforcement model, the projected length of the reinforcement cable on the horizontal plane is obtained by calculating the geometric parameters. S33. Based on the normalized mode shape curve and the projected length on the horizontal plane, the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement is obtained through joint analysis. S34. Based on the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained through structural mechanics analysis.

[0008] Optionally, in step S5, based on the height value and the geometric dimensions of the angle steel tower, the support frame is obtained by assembling channel steel components, a third clamp, and a second clamp on the angle steel tower, including: S51. Based on the height value and the geometric dimensions of the angle steel tower, the specific dimensions of the channel steel component are obtained through geometric dimension calculation. S52. Based on this height value, the first stage of the support frame is obtained by installing a third clamp on the main steel tower of the angle steel tower. S53. Based on the specific dimensions of the first-stage support frame and the channel steel component, the middle position of the channel steel component is connected to the first-stage support frame using the third clamp to obtain the second-stage support frame. S54. Based on the support frame of the second stage, fix both ends of the channel steel component with the second clamp to obtain the support frame.

[0009] Optionally, in S6, based on the support frame, a reinforcement and vibration damping device is obtained by assembling a reinforcing cable, a fixed pulley, and a first clamp on the angle steel tower, comprising: S61. Based on the support frame, by assembling a fixed pulley on the second fixture, the first stage of overall reinforcement and vibration reduction model is obtained; S62. Based on the first-stage overall reinforcement and vibration reduction model, the second-stage overall reinforcement and vibration reduction model is obtained by assembling the first clamp on the top of the angle steel tower. S63. Based on the second-stage overall reinforcement and vibration reduction model, the reinforcement cable is led out from the first clamp, extended to the fixed pulley, and then turned at the fixed pulley before being led vertically to the ground to obtain the overall reinforcement and vibration reduction device.

[0010] Optionally, in S7, based on the overall reinforcement and vibration reduction device, the reinforcement and vibration reduction device for the angle steel tower is obtained by assembling auxiliary cables, auxiliary angle steel, and a fourth clamp, including: S71. Based on the overall reinforcement and vibration reduction device, the first stage reinforcement and vibration reduction device is obtained by assembling the fourth clamp at the inclined member of the angle steel tower. S72. Based on the first-stage reinforcement and vibration damping device, a second-stage reinforcement and vibration damping device is obtained by fixing one end of the auxiliary angle steel to the fourth clamp and the other end to the first clamp. S73. Based on the second-stage reinforcement and vibration reduction device, the first clamp and the second clamp are connected by an auxiliary cable to obtain the reinforcement and vibration reduction device for the angle steel tower.

[0011] On the other hand, the present invention provides a reinforcement and vibration reduction device for angle steel towers, which is applied to the reinforcement and vibration reduction method of angle steel towers. The device includes: The angle steel tower geometry acquisition module is used to obtain the geometric dimension data of the angle steel tower based on engineering drawings and on-site surveying, including: foundation root opening, tower height, and main material inclination angle; The overall reinforcement simplified model acquisition module is used to obtain an overall reinforcement simplified model of the angle steel tower by introducing a support frame at a set height and applying reinforcement cables based on the geometric dimensions of the angle steel tower. The equivalent horizontal constraint force calculation module is used to obtain the equivalent horizontal constraint force of the angle steel tower related to the set height by establishing a structural mechanics model and theoretical derivation based on the overall reinforcement simplified model. The support frame is equipped with a height calculation module, which is used to obtain the height value of the support frame at the set height through maximum value optimization analysis based on the equivalent horizontal constraint force. The support frame acquisition module is used to obtain the support frame by assembling channel steel components, a third clamp, and a second clamp on the angle steel tower based on the height value and the geometric dimensions of the angle steel tower. The module for obtaining the overall reinforcement and vibration reduction device is used to obtain the overall reinforcement and vibration reduction device based on the support frame by assembling reinforcement cables, fixed pulleys and the first clamp on the angle steel tower. The module for acquiring the reinforcement and vibration reduction device of the angle steel tower is used to obtain the reinforcement and vibration reduction device of the angle steel tower by assembling auxiliary cables, auxiliary angle steel and a fourth clamp according to the overall reinforcement and vibration reduction device.

[0012] Compared with the prior art, the technical solution of the present invention has at least the following beneficial effects: (1) The device is connected to the angle steel tower by a clamp, which will not damage the original structure. At the same time, the clamp-type device is easy to install and convenient to construct. (2) By using the parameter design method, the optimal installation height of the support frame is determined according to the external dimensions of the angle steel tower, so that the device can exert the maximum reinforcement and vibration reduction effect; (3) When the angle steel tower is displaced, the reinforcing cable in the device will generate a restraining force to inhibit the displacement of the angle steel tower. The support frame changes the force transmission path of the reinforcing cable, so that the device will not occupy the surrounding land area. The other devices enhance the local bearing capacity at the connection between the reinforcing cable, the support frame and the angle steel tower, and improve the overall safety factor of the device. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a flowchart illustrating an embodiment of the method for reinforcing and reducing vibration of angle steel towers according to the present invention; Figure 2 This is a schematic diagram of a simplified overall reinforcement model of an embodiment of the reinforcement and vibration reduction device for angle steel towers of the present invention; Figure 3 This is a flowchart illustrating the calculation of the equivalent horizontal constraint force in an embodiment of the reinforcement and vibration reduction method for angle steel towers of the present invention. Figure 4 This is a schematic diagram of the stress and deformation of an angle steel tower structure according to an embodiment of the reinforcement and vibration reduction method for angle steel towers of the present invention; Figure 5 This is a flowchart illustrating the process of obtaining the support frame in an embodiment of the reinforcement and vibration reduction method for angle steel towers of the present invention. Figure 6 This is a partial structural schematic diagram of an embodiment of the angle steel tower reinforcement and vibration reduction device of the present invention; Figure 7 This is a structural diagram showing the connection between the channel steel in the middle of the support frame and the main material of the iron tower in an embodiment of the reinforcement and vibration reduction device for the angle steel tower of the present invention. Figure 8 This is a schematic diagram of the connection structure of the channel steel ends of the support frame of the reinforcement and vibration reduction device for the angle steel tower of the present invention; Figure 9 This is a flowchart illustrating the acquisition of the overall reinforcement and vibration reduction device in an embodiment of the reinforcement and vibration reduction method for angle steel towers of the present invention; Figure 10 This is a schematic diagram of the top fixing structure of the reinforcing cable in an embodiment of the reinforcement and vibration reduction device for angle steel towers of the present invention; Figure 11 This is a flowchart illustrating the acquisition of the reinforcement and vibration reduction device for an angle steel tower, according to an embodiment of the reinforcement and vibration reduction method for angle steel towers of the present invention. Figure 12This is a schematic diagram of the structure for fixing the auxiliary angle steel to the inclined members of the iron tower in an embodiment of the reinforcement and vibration reduction device for angle steel towers of the present invention; Figure 13 This is a system block diagram of an embodiment of the angle steel tower reinforcement and vibration reduction device of the present invention.

[0015] The labels in the diagram are as follows: 1. Main tower material; 2. Reinforcing cable; 3. Support frame; 4. Top diaphragm; 5. First clamp; 6. Auxiliary cable; 7. Auxiliary angle steel; 8. Tower diagonal member; 9. Fixed pulley; 10. Third clamp; 11. Fourth clamp; 12. Second clamp; 13. Angle steel tower; 31. Channel steel component. Detailed Implementation

[0016] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0017] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0018] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1 The flowchart shown is an embodiment of the reinforcement and vibration reduction method for angle steel towers according to the present invention. The present invention provides a reinforcement and vibration reduction method for angle steel towers, which is implemented by a reinforcement and vibration reduction device for angle steel towers. The method includes: S1. Based on the engineering drawings, the geometric dimensions of angle steel tower 13 were obtained through on-site surveying, including: foundation root opening Wa, tower height H, and main material inclination angle β. S2. Based on the geometric dimensions of the angle steel tower 13, a simplified overall reinforcement model of the angle steel tower 13 is obtained by introducing a support frame 3 at a set height and applying reinforcing cables 2. Specifically, the simplified global reinforcement model of the angle steel tower 13 is as follows: Figure 2 As shown in the figure, the installation height of the support frame 3 is h.

[0020] S3. Based on the simplified global reinforcement model, by establishing a structural mechanics model and theoretical derivation, the equivalent horizontal constraint force of the angle steel tower 3 related to the set height h is obtained; Specifically, the flowchart for calculating the equivalent level constraint force is as follows: Figure 3 ,include: S31. Based on this simplified global reinforcement model, the normalized mode shape curves are obtained through the design standards for tall structures. The structural stress and deformation diagram of angle steel tower 13 is shown below. Figure 4 The meanings of the dimension labels in the figure are shown in Table 1 below: Table 1 Meaning of Dimension Numbers

[0021] Furthermore, the normalized horizontal displacement at any height of angle steel tower 13: (1) S32. Based on the simplified global reinforcement model, the projected length of the reinforcement cable on the horizontal plane is obtained by calculating the geometric parameters. Furthermore, based on the geometric dimensions of the angle steel tower 13, the expression for the projected length W of the reinforcing cable above the supporting frame on the horizontal plane can be obtained: (2) Where: H is the total height of the angle steel tower 13; h is the installation height of the support frame; β is the inclination angle of the main material; Wa is the foundation root opening; S33. Based on the normalized mode shape curve and the projected length on the horizontal plane, the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement is obtained through joint analysis. Furthermore, based on the structural stress and deformation diagram of angle steel tower 13... Figure 4 When the top of angle steel tower 13 experiences a unit horizontal displacement, the elongation of the reinforcing cable is... It can be represented as: (3) S34. Based on the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained through structural mechanics analysis.

[0022] Furthermore, the elongation of the cable should be reinforced first. Using the formulas of elasticity, the internal force F in the cable can be expressed as: (4) Where: k is the stiffness of the reinforced cable; E and A are the elastic modulus and cross-sectional area of ​​the cable; Furthermore, considering the tilt angle and the reaction force exerted by the cable system on the angle steel tower 13 structure at the support frame 3, the equivalent horizontal constraint force It can be represented as: (5) in, (6) S4. Based on the equivalent horizontal constraint, the height h of the support frame at the set height is obtained through maximum value optimization analysis. Furthermore, according to equations (5), (6), and (3), the equivalent horizontal constraint force It is a function of the support frame height h, obtained by solving for the equivalent horizontal constraint force. The conditions for determining the maximum value can be used to obtain the specific value of the support frame height h.

[0023] S5. Based on the height h value and the geometric dimensions of the angle steel tower 13, the support frame 3 is obtained by assembling the channel steel component 31, the third clamp 10 and the second clamp 12 on the angle steel tower 13. Specifically, the flowchart for obtaining the supporting framework 3 is as follows: Figure 5 ,include: S51. Based on the height h value and the geometric dimensions of the angle steel tower, the installation height h of the channel steel component 31 is obtained through geometric dimension calculation. S52. Based on the height value h, the first-stage support frame is obtained by installing the third clamp 10 on the main iron tower material 1 of the angle steel tower 13. S53. Based on the specific dimensions of the first-stage support frame and the channel steel component 31, the middle position of the channel steel component 31 is connected to the first-stage support frame through the third clamp 10 to obtain the second-stage support frame. S54. Based on the second stage support frame, the two ends of the channel steel component 31 are fixed by the second clamp 12 to obtain the support frame 3.

[0024] Furthermore, a partial structural schematic diagram of an embodiment of the angle steel tower reinforcement and vibration reduction device of the present invention is shown below. Figure 6 The structural diagram of the connection between the channel steel component 31 and the main tower member 1 at the middle position of the channel steel component 31 via the third clamp 10 is shown below. Figure 7 The connection structure of the two ends of the channel steel component 31 via the second clamp 12 is shown in the figure below. Figure 8 .

[0025] S6. Based on the support frame 3, by assembling the reinforcing cable 2, the fixed pulley 9 and the first clamp 5 on the angle steel tower 13, an overall reinforcement and vibration reduction device is obtained. Specifically, the flowchart for obtaining the overall reinforcement and vibration reduction device is as follows: Figure 9 ,include: S61. Based on the support frame 3, by assembling the fixed pulley 9 on the second clamp 12, the first stage overall reinforcement and vibration reduction model is obtained. S62. Based on the first-stage overall reinforcement and vibration reduction model, the second-stage overall reinforcement and vibration reduction model is obtained by assembling the first clamp 5 on the top transverse diaphragm 4 of the angle steel tower 13. S63. Based on the second-stage overall reinforcement and vibration reduction model, the reinforcement cable 2 is led out from the first clamp 5, extended to the fixed pulley 9, and then turned at the fixed pulley 9 and led vertically to the ground to obtain the overall reinforcement and vibration reduction device.

[0026] Furthermore, the structural diagram of the reinforcement cable 2 being fixed to the top transverse diaphragm 4 of the angle steel tower 13 via the first clamp 5 is shown below. Figure 10 ; Simplified global hardening model Figure 2 It can be seen that after the reinforcing cable 2 turns at the 9 fixed pulleys, the area occupied by the reinforcing cable 2 after it is stretched to the ground is significantly reduced.

[0027] S7. Based on the overall reinforcement and vibration reduction device, the reinforcement and vibration reduction device of the angle steel tower 13 is obtained by assembling the auxiliary cable 6, the auxiliary angle steel 7 and the fourth clamp 11.

[0028] Specifically, the flowchart for obtaining the reinforcement and vibration damping device for the angle steel tower 13 is as follows: Figure 11 ,include: S71. Based on the overall reinforcement and vibration reduction device, the first stage reinforcement and vibration reduction device is obtained by assembling the fourth clamp 11 at the inclined member 8 of the angle steel tower 13. S72. Based on the first-stage reinforcement and vibration damping device, by fixing one end of the auxiliary angle steel 7 to the fourth clamp 11 and the other end to the first clamp 5, the second-stage reinforcement and vibration damping device is obtained. Furthermore, the structural diagram of the auxiliary angle steel 7 being fixed at one end to the inclined member 8 of the iron tower via the fourth clamp 11 is shown below. Figure 12 The structural diagram of the auxiliary angle steel 7 being fixed at the other end to the first clamp 5 is shown below. Figure 10 ; S73. Based on the second-stage reinforcement and vibration reduction device, the first clamp 5 and the second clamp 12 are connected by the auxiliary cable 6 to obtain the reinforcement and vibration reduction device for the angle steel tower.

[0029] like Figure 13 The diagram shown is a system block diagram of an embodiment of the angle steel tower reinforcement and vibration reduction device of the present invention. The present invention provides an angle steel tower reinforcement and vibration reduction device, which is applied to a method for reinforcing and reducing the vibration of an angle steel tower. The device includes: an angle steel tower geometry acquisition module, an overall reinforcement simplified model acquisition module, an equivalent horizontal constraint force calculation module, a support frame installation height calculation module, a support frame acquisition module, an overall reinforcement and vibration reduction device acquisition module, and an angle steel tower reinforcement and vibration reduction device acquisition module. Specifically: The angle steel tower geometry acquisition module is used to obtain the geometry data of angle steel tower 13 based on engineering drawings and on-site surveying, including: foundation root opening, tower height, and main material inclination angle; The overall reinforcement simplified model acquisition module is used to obtain the overall reinforcement simplified model of the angle steel tower 13 by introducing a support frame 3 at a set height and applying reinforcement cables 2 based on the geometric dimension data of the angle steel tower 13. The equivalent horizontal constraint force calculation module is used to obtain the equivalent horizontal constraint force of the angle steel tower 13 related to the set height by establishing a structural mechanics model and theoretical derivation based on the overall reinforcement simplified model. The support frame is equipped with a height calculation module, which is used to obtain the height value of the support frame 3 at the set height through maximum value optimization analysis based on the equivalent horizontal constraint force. The support frame acquisition module is used to obtain the support frame 3 by assembling the channel steel component 31, the third clamp 10 and the second clamp 12 on the angle steel tower according to the height value and the geometric dimension data of the angle steel tower 13. The module for obtaining the overall reinforcement and vibration reduction device is used to obtain the overall reinforcement and vibration reduction device based on the support frame 3 by assembling the reinforcement cable 2, the fixed pulley 9 and the first clamp 5 on the angle steel tower 13. The module for obtaining the reinforcement and vibration reduction device of the angle steel tower is used to obtain the reinforcement and vibration reduction device of the angle steel tower 13 by assembling the auxiliary cable 6, the auxiliary angle steel 7 and the fourth clamp 11 according to the overall reinforcement and vibration reduction device.

[0030] This invention provides a method and apparatus for strengthening and vibration reducing an angle steel tower. First, the geometric dimensions of the angle steel tower are obtained through on-site surveying based on existing drawings. Then, based on the geometric data, a force model is established for the cable-stayed reinforcement system. Through theoretical derivation, the expression for the equivalent horizontal constraint force of the angle steel tower is determined, and the installation height of the support frame in the reinforcement system is obtained by optimizing the maximum value of the equivalent horizontal constraint force. Next, based on the installation height of the support frame in the reinforcement device, the dimensions of the channel steel for the support frame are determined, and the support frame is installed on the angle steel tower using clamps. Third, integrally curved cables are arranged, running from the top to the bottom of the tower, to achieve overall reinforcement of the tower body. Finally, local auxiliary cables are arranged to achieve local reinforcement of the tower body, ultimately resulting in a reinforcement and vibration reduction device for the angle steel tower.

[0031] It is understood that the present invention has been described through the above embodiments and should not be construed as limiting the implementation and scope of the present invention. Those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A method for reinforcing and reducing vibration of an angle steel tower, characterized in that, The method includes: S1. Based on the engineering drawings, obtain the geometric dimensions of the angle steel tower through on-site surveying, including: foundation root opening, tower height, and main material inclination angle; S2. Based on the geometric dimensions of the angle steel tower, a simplified overall reinforcement model of the angle steel tower is obtained by introducing a support frame at a set height and applying reinforcing cables. S3. Based on the overall reinforcement simplified model, by establishing a structural mechanics model and theoretical derivation, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained; S4. Based on the equivalent horizontal constraint force, the height value of the set height of the support frame is obtained through maximum value optimization analysis. S5. Based on the height value and the geometric dimensions of the angle steel tower, the support frame is obtained by assembling channel steel components, a third clamp, and a second clamp on the angle steel tower. S6. Based on the support frame, by assembling the reinforcing cable, fixed pulley and first clamp on the angle steel tower, an overall reinforcement and vibration reduction device is obtained; S7. Based on the overall reinforcement and vibration reduction device, the reinforcement and vibration reduction device of the angle steel tower is obtained by assembling auxiliary cables, auxiliary angle steel and fourth clamp.

2. The method for strengthening and vibration reducing angle steel towers according to claim 1, characterized in that, In step S3, based on the simplified overall reinforcement model, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained through establishing a structural mechanics model and theoretical derivation, including: S31. Based on the overall reinforcement simplified model, the normalized vibration mode curve is obtained through the tall structure design standard; S32. Based on the overall reinforcement simplified model, the projected length of the reinforcement cable on the horizontal plane is obtained by calculating the geometric parameters. S33. Based on the normalized mode shape curve and the projected length on the horizontal plane, the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement is obtained through joint analysis. S34. Based on the elongation of the reinforcing cable when the top of the angle steel tower undergoes a unit displacement, the equivalent horizontal constraint force of the angle steel tower related to the set height is obtained through structural mechanics analysis.

3. The method for strengthening and vibration reducing angle steel towers according to claim 1, characterized in that, In step S5, based on the height value and the geometric dimensions of the angle steel tower, the support frame is obtained by assembling channel steel components, a third clamp, and a second clamp on the angle steel tower, including: S51. Based on the height value and the geometric dimensions of the angle steel tower, the specific dimensions of the channel steel component are obtained through geometric dimension calculation; S52. Based on the height value, a third clamp is installed on the main steel tower material of the angle steel tower to obtain the first stage of the support frame. S53. Based on the specific dimensions of the support frame of the first stage and the channel steel component, the middle position of the channel steel component is connected to the support frame of the first stage through the third clamp to obtain the support frame of the second stage. S54. Based on the support frame of the second stage, the two ends of the channel steel component are fixed by the second clamp to obtain the support frame.

4. The method for strengthening and vibration reducing angle steel towers according to claim 1, characterized in that, In step S6, based on the supporting frame, a reinforcement cable, a fixed pulley, and a first clamp are assembled on the angle steel tower to obtain an overall reinforcement and vibration reduction device, including: S61. Based on the support frame, by assembling a fixed pulley on the second fixture, a first-stage overall reinforcement and vibration reduction model is obtained. S62. Based on the first stage overall reinforcement and vibration reduction model, the second stage overall reinforcement and vibration reduction model is obtained by assembling the first clamp on the top of the angle steel tower. S63. Based on the second stage overall reinforcement and vibration reduction model, the reinforcement cable is led out from the first clamp, extended to the fixed pulley, and then turned at the fixed pulley before being led vertically to the ground to obtain the overall reinforcement and vibration reduction device.

5. The method for strengthening and vibration reducing an angle steel tower according to claim 1, characterized in that, In step S7, based on the overall reinforcement and vibration reduction device, the reinforcement and vibration reduction device for the angle steel tower is obtained by assembling auxiliary cables, auxiliary angle steel, and a fourth clamp, including: S71. Based on the overall reinforcement and vibration reduction device, the first stage reinforcement and vibration reduction device is obtained by assembling a fourth clamp at the inclined member of the angle steel tower. S72. Based on the first stage reinforcement and vibration damping device, by fixing one end of the auxiliary angle steel to the fourth clamp and the other end to the first clamp, a second stage reinforcement and vibration damping device is obtained. S73. Based on the second stage reinforcement and vibration reduction device, the first clamp and the second clamp are connected by an auxiliary cable to obtain the reinforcement and vibration reduction device for the angle steel tower.

6. A reinforcement and vibration reduction device for an angle steel tower, used to implement the reinforcement and vibration reduction method for an angle steel tower as described in any one of claims 1-5, characterized in that, The device includes: The angle steel tower geometry acquisition module is used to obtain the geometric dimension data of the angle steel tower based on engineering drawings and on-site surveying, including: foundation root opening, tower height, and main material inclination angle; The overall reinforcement simplified model acquisition module is used to obtain an overall reinforcement simplified model of the angle steel tower by introducing a support frame at a set height and applying reinforcement cables based on the geometric dimension data of the angle steel tower. The equivalent horizontal constraint force calculation module is used to obtain the equivalent horizontal constraint force of the angle steel tower related to the set height by establishing a structural mechanics model and theoretical derivation based on the overall reinforcement simplified model. A support frame installation height calculation module is used to obtain the height value of the set height of the support frame based on the equivalent horizontal constraint force through maximum value optimization analysis. The support frame acquisition module is used to obtain the support frame by assembling channel steel components, a third clamp, and a second clamp on the angle steel tower according to the height value and the geometric dimensions of the angle steel tower. The module for obtaining an overall reinforcement and vibration reduction device is used to obtain an overall reinforcement and vibration reduction device by assembling reinforcement cables, fixed pulleys and a first clamp on the angle steel tower according to the support frame. The module for obtaining the reinforcement and vibration reduction device of the angle steel tower is used to obtain the reinforcement and vibration reduction device of the angle steel tower by assembling auxiliary cables, auxiliary angle steel and a fourth clamp according to the overall reinforcement and vibration reduction device.

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