Integrated anchorage device for twisting inhaul cable and monitoring cable force in real time and using method of integrated anchorage device

Abstract

The invention relates to the technical field of bridge construction, and discloses an integrated anchorage device for twisting an inhaul cable and monitoring cable force in real time and a using method of the integrated anchorage device. The anchorage device comprises an anchorage device body, a gradienter, an end plate assembly, a pressure sensor and a welding part; a plurality of cable holes are formed in the anchorage device in a penetrating mode, and a plurality of inhaul cables penetrate through the cable holes respectively. The gradienter is mounted on the outer wall of the anchorage device; the end plate assembly comprises an anchorage device lower end plate and an anchorage device upper end plate, the anchorage device lower end plate and the anchorage device upper end plate are installed on the two opposite end faces of the anchorage device correspondingly, and the anchorage device lower end plate and the anchorage device upper end plate are rotationally connected with the anchorage device through ball structures correspondingly. The pressure sensor is installed on the end face, close to the anchorage device, of the anchorage device lower end plate. The welding part is used for fixing the anchorage device, the anchorage device lower end plate and the anchorage device upper end plate. Rapid alignment of the inhaul cables and real-time monitoring of cable force can be achieved, the problem of twisting of the inhaul cables is effectively solved, operation is easy and convenient, and safety and reliability are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly to an integrated anchor for cable twisting and real-time monitoring of cable force and a using method thereof. Background Art

[0002] Modern bridges are developing towards larger span and lighter structures. The cable structure has also become a commonly used structure in bridge construction. For example, cable-stayed bridges with cable structures, prestressed concrete structures, cable-stayed and suspended systems bridges, etc. all utilize the cable structure. With the widespread application of the cable structure, the requirements for the performance and structure of the anchor are also getting higher and higher.

[0003] Currently, in the construction of existing bridge projects, most cable structures are composed of multiple steel strands or steel wires, and the cable length is relatively long. When installing the cable structure, it is very difficult to ensure that each cable is aligned. When tensioning without ensuring that each cable is aligned, there is a high possibility of cable twisting. When the cable twists, it will cause uneven stress on the steel strands, uneven distribution of the safety factor, and there are certain safety hazards, and it is not convenient to control the cable force during tensioning. In addition, when solving the problem of cable twisting in the prior art, a comb plate is usually used for arrangement, but it is easy to damage the steel strands and extremely likely to cause uneven stress. At the same time, existing anchors do not have the function of cable force monitoring, and a through-type cable anchor meter needs to be additionally installed, but the installation accuracy requirement is very high, and the cable force monitoring data is prone to distortion.

[0004] Therefore, an integrated anchor for cable twisting and real-time monitoring of cable force and a using method thereof are proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide an integrated anchor for cable twisting and real-time monitoring of cable force and a using method thereof, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above purpose, the present invention provides the following solutions: The present invention provides an integrated anchor for cable twisting and real-time monitoring of cable force, including: An anchor, through which a plurality of cable holes are penetrated, and a plurality of cables respectively penetrate through the plurality of cable holes; A level, which is installed on the outer wall of the anchor; An end plate assembly, which includes a lower end plate of the anchor and an upper end plate of the anchor. The lower end plate of the anchor and the upper end plate of the anchor are respectively installed on two opposite end faces of the anchor, and the lower end plate of the anchor and the upper end plate of the anchor are respectively rotationally connected to the anchor through a ball structure; a plurality of installation grooves are opened on the end face of the lower end plate of the anchor close to the anchor; Pressure sensors, several of which are provided and respectively installed in several installation grooves, and the pressure sensors are in contact with the outer wall of the anchor Welding parts for fixing the anchor, the lower end plate of the anchor and the upper end plate of the anchor Wherein, a first limit through hole is formed on the end face of the lower end plate of the anchor away from the anchor, a second limit through hole is formed on the end face of the upper end plate of the anchor away from the anchor, and several stay cables all penetrate through the first limit through hole and the second limit through hole

[0007] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, several knocking blocks are installed on the outer wall of the anchor

[0008] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, a first annular groove is formed on the end face of the lower end cover of the anchor close to the anchor, and the first annular groove communicates with the first limit through hole; a second annular groove is formed on the end face of the upper end cover of the anchor close to the anchor, and the second annular groove communicates with the second limit through hole Chute are formed on the inner walls of the first annular groove and the second annular groove, the ball structure includes several ball bodies, and several ball bodies are slidably connected in the chute; the ball bodies are rotationally connected with the outer side wall of the anchor

[0009] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, the outer diameter of the middle section of the anchor is larger than the outer diameters of both ends of the anchor

[0010] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, the inner diameters of the first annular groove and the second annular groove are both smaller than the outer diameter of the middle section of the anchor

[0011] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, the cable hole includes a straight cylinder section and a gradually expanding section that communicate with each other. The small-diameter end of the gradually expanding section is arranged close to the straight cylinder section, and the small-diameter end of the gradually expanding section has the same size as the straight cylinder section

[0012] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, the welding parts include several angle steels, and the anchor, the lower end plate of the anchor and the upper end plate of the anchor are welded and fixed by several angle steels

[0013] For the integrated anchor for stay cable twisting and real-time monitoring of cable force provided by the present invention, the level is a spirit bubble level

[0014] The present invention also provides a method for using an integrated anchor for cable twisting and real-time monitoring of cable force, including the following steps: Step 1: Install a level directly above the marked cable hole; Step 2: Install an anchor, a lower end plate of the anchor, and an upper end plate of the anchor at the tension end of the cable, and install an anchor, a lower end plate of the anchor, and an upper end plate of the anchor at the anchorage end of the cable; Step 3: Adjust the position of the anchor and observe the level to level the anchors at the tension end and the anchorage end of the cable; Step 4: Rotate the number of turns of the anchor in the opposite direction of twisting to align the cable; Step 5: Weld the welded part, the anchor, the lower end plate of the anchor, and the upper end plate of the anchor together by electric welding to realize the limit of the anchor; Step 6: Real-time measure the cable force of the cable through a pressure sensor.

[0015] The present invention discloses the following technical effects: When installing and adjusting the position of the anchor of the present invention, the anchor is leveled through a level, and the operation is simple and convenient. After the overall installation of the anchor, the cable can be aligned by simply rotating the anchor, which solves the problem of cable twisting while ensuring the installation efficiency of the anchor; The present invention can obtain the cable force value of the cable in real time through a pressure sensor, timely detect abnormal changes in the cable force, provide accurate data support for the tension control during the bridge construction process. By real-time monitoring the cable force, it is possible to avoid potential safety hazards of the bridge structure caused by excessive or too small cable force, which helps construction personnel accurately control the tension force, ensure the safe progress of bridge construction, improve the overall performance and service life of the bridge, and effectively solve the problem of inaccurate cable force control during the cable tensioning process; The present invention enables the installed anchor to be rotatable relative to the lower end plate and the upper end plate of the anchor through a ball structure. By observing the level and adjusting the position of the anchor, the anchors at the tension end and the anchorage end of the cable can be leveled. When twisting, rotate the number of turns in the opposite direction of twisting to align the cable. After alignment, weld the welded part, the anchor, the lower end plate of the anchor, and the upper end plate of the anchor together by electric welding to realize the limit of the anchor. The operation is simple and can effectively solve the situation of cable twisting, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is the installation schematic diagram of the present invention; Figure 2 Structural schematic of the present invention Figure Ⅰ ; Figure 3 Structural schematic of the present invention Figure Ⅱ ; Figure 4 Installation schematic of the present invention at the tensioning end and anchoring end of the cable

[0018] Among them, 1. Lower end plate of the anchor; 2. Anchor; 3. Upper end plate of the anchor; 4. Level bubble level; 5. Knocking block; 6. Cable hole; 7. Ball body; 8. Chute; 9. Cable; 10. Angle steel; 11. Pressure sensor Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0020] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments

[0021] Referring to Figures 1 - 4 , the present invention provides an integrated anchor for cable twisting and real-time monitoring of cable force, including: Anchor 2, through which a number of cable holes 6 are penetrated, and a number of cables 9 respectively penetrate through the number of cable holes 6 Level, installed on the outer wall of the anchor 2 End plate assembly, the end plate assembly includes a lower end plate 1 of the anchor and an upper end plate 3 of the anchor. The lower end plate 1 of the anchor and the upper end plate 3 of the anchor are respectively installed on two opposite end faces of the anchor 2. The lower end plate 1 of the anchor and the upper end plate 3 of the anchor are respectively rotationally connected to the anchor 2 through a ball structure; a number of installation grooves are provided on the end face of the lower end plate 1 of the anchor close to the anchor 2 Pressure sensors 11, a number of pressure sensors 11 are provided, and a number of pressure sensors 11 are respectively installed in a number of installation grooves, and a number of pressure sensors 11 are arranged in one-to-one correspondence with a number of installation grooves; the pressure sensors 11 are in contact with the outer wall of the anchor 2; the pressure sensors 11 installed on the lower end plate 1 of the anchor can effectively ensure full-section compression and improve measurement accuracy; by averaging the measurement data of a number of pressure sensors 11, more accurate measurement data can be obtained Welding parts, used to fix the anchor 2, the lower end plate 1 of the anchor, and the upper end plate 3 of the anchor Among them, a first limiting through-hole is provided on the end face of the lower end plate 1 of the anchor device away from the anchor device 2, and a second limiting through-hole is provided on the end face of the upper end plate 3 of the anchor device away from the anchor device 2. A plurality of stay cables 9 all penetrate through the first limiting through-hole and the second limiting through-hole; the anchor device 2 is rotationally connected to the hole walls of the first limiting through-hole and the second limiting through-hole. The first limiting through-hole and the second limiting through-hole are used for the stay cables 9 to pass through, and can effectively restrict the tangential displacement and radial displacement of the anchor device 2, so that the anchor device 2 can only rotate; In this way, in this embodiment, the pressure sensor 11 adopts a piezoelectric pressure sensor with high precision and high stability, and its range is reasonably selected according to the designed cable force range of the stay cable to ensure accurate measurement data can be provided throughout the working range; On the end face of the upper end plate 3 of the anchor device close to the anchor device 2, a plurality of pressure sensors 11 are installed according to a specific layout method. The arrangement of the plurality of pressure sensors 11 can avoid the problem of inaccurate cable force monitoring caused by local stress concentration or measurement errors. By comprehensively analyzing and processing the data of the plurality of pressure sensors 11, a more accurate cable force value can be obtained; When installing and adjusting the position of the anchor device 2 of the present invention, the leveling of the anchor device 2 is realized through a level. The operation is simple and convenient. After the anchor device 2 is integrally installed, only by rotating the anchor device 2 can the stay cables 9 be aligned. While solving the problem of the stay cables 9 being twisted, the installation efficiency of the anchor device 2 is guaranteed; The present invention can obtain the cable force value of the stay cable 9 in real time through the pressure sensor 11, and timely discover the abnormal change of the cable force, providing accurate data support for the tension control in the bridge construction process. By monitoring the cable force in real time, the potential safety hazards of the bridge structure caused by too large or too small cable force can be avoided, which helps the construction personnel to accurately control the tension force, ensures the safe progress of the bridge construction, improves the overall performance and service life of the bridge, and effectively solves the problem of inaccurate cable force control during the tensioning process of the stay cable; The present invention enables the installed anchor device 2 to be rotatable relative to the lower end plate 1 and the upper end plate 3 of the anchor device through a ball structure. By observing the level and adjusting the position of the anchor device 2, the anchor devices 2 at the tensioning end and the anchoring end of the stay cable 9 can be leveled. When it is twisted, the anchor device 2 is rotated in the opposite direction of the twist by the number of turns of the twist to align the stay cable 9. After alignment, the welding parts, the anchor device 2, the lower end plate 1 and the upper end plate 3 of the anchor device are welded together to realize the limitation of the anchor device 2. The operation is simple, and the situation of the stay cable 9 being twisted can be effectively solved, which is safe and reliable.

[0022] In a further optimized solution, a plurality of knocking blocks 5 are installed on the outer wall of the anchor device 2. By knocking the plurality of knocking blocks 5, the convenient and rapid leveling operation of the anchor device 2 can be realized.

[0023] For a further optimized solution, a first annular groove is formed on the end face of the lower end cap of the anchor 2 close to the anchor 2, and the first annular groove communicates with the first limiting through hole; a second annular groove is formed on the end face of the upper end cap of the anchor 2 close to the anchor 2, and the second annular groove communicates with the second limiting through hole; Chute 8s are formed on the inner walls of the first annular groove and the second annular groove. The ball structure includes a number of ball bodies 7, and the number of ball bodies 7 are slidably connected in the chute 8s; the ball bodies 7 are rotatably connected to the outer side wall of the anchor 2; The chute 8s are filled with a high-performance lubricant. The lubricant can not only maintain good lubrication performance under high pressure, but also form a protective film to prevent wear between the surface of the ball bodies 7 and the chute 8s, ensuring that the ball bodies 7 can slide smoothly; Through a number of ball bodies 7, the anchor 2 can rotate relative to the lower anchor plate 1 and the upper anchor plate 3, which is convenient for rotating the anchor 2 to align the cable 9, effectively solving the problem of the cable 9 being twisted.

[0024] For a further optimized solution, the main components such as the anchor 2, the lower anchor plate 1 and the upper anchor plate 3 are all made of high-strength steel, which has excellent tensile, compressive and shear strengths and can withstand the huge pressure exerted by the cable without being damaged; the quenching and tempering treatment process is adopted to refine the crystal grains of the steel and make the structure uniform, thereby improving its mechanical properties and fatigue resistance, ensuring that the anchor can still maintain safety and effectiveness under the long-term huge pressure.

[0025] For a further optimized solution, the outer diameter of the middle section of the anchor 2 is larger than the outer diameters of both ends of the anchor 2.

[0026] For a further optimized solution, the inner diameters of the first annular groove and the second annular groove are both smaller than the outer diameter of the middle section of the anchor 2; so that the anchor 2 can be sleeved into the lower anchor plate 1 and the upper anchor plate 3 and fit with the ball bodies 7. The outer diameter of the middle of the anchor 2 is larger than the inner diameters of the lower anchor plate 1 and the upper anchor plate 3. Therefore, when tensioning, the tensile force on the anchor 2 and the pressure on the upper anchor plate 3 will not completely act on the ball bodies 7, and part of the force will directly act on the lower anchor plate 1 and the upper anchor plate 3.

[0027] For a further optimized solution, the cable hole 6 includes a straight cylinder section and a gradually expanding section that communicate with each other. The small-diameter end of the gradually expanding section is arranged close to the straight cylinder section, and the small-diameter end of the gradually expanding section has the same size as the straight cylinder section.

[0028] For a further optimized solution, the welded part includes a number of angle steels 10. The anchor 2, the lower anchor plate 1 and the upper anchor plate 3 are welded and fixed by a number of angle steels 10. After the cable 9 is aligned, the anchor 2, the lower anchor plate 1 and the upper anchor plate 3 are welded and fixed by the angle steels 10 to make the anchor 2 unable to rotate, ensuring that the cable 9 remains in an aligned state.

[0029] For a further optimized solution, the level is a spirit level 4. When adjusting the anchor 2 by knocking several knocking blocks 5, by observing that the spirit bubble in the spirit level 4 is centered, a convenient and fast leveling operation can be achieved.

[0030] For a further optimized solution, several pressure sensors 11 are electrically connected to a data acquisition system. This system can collect the analog signals output by the pressure sensors in real time and accurately, and convert them into digital signals. The data acquisition system has a high sampling rate and high resolution, and can capture tiny changes in the cable force; The cable force data collected is transmitted to a remote monitoring center using wireless transmission technologies (such as ZigBee, LoRa, etc.). The wireless transmission method avoids problems such as complex wiring and susceptibility to interference brought by traditional wired transmission, improving the flexibility and reliability of the system. At the same time, encryption algorithms are used during the data transmission process to ensure the security and integrity of the data.

[0031] At the remote monitoring center, advanced signal processing algorithms are used to perform preprocessing operations such as filtering and denoising on the collected cable force data, eliminating the influence of environmental interference and sensor self-errors on the data.

[0032] Data analysis algorithms based on machine learning, such as neural network algorithms, are used to deeply mine and analyze the cable force data. The algorithm is trained with a large amount of historical cable force data so that it can accurately identify the normal change trend and abnormal fluctuation pattern of the cable force. When an abnormal change in the cable force is detected, the system can issue a warning signal in a timely manner.

[0033] For a further optimized solution, a temperature sensor (not shown in the figure) is installed on the anchor 2. The temperature sensor is electrically connected to the data acquisition system, and the temperature sensor is used to monitor the changes in the ambient temperature and the cable temperature in real time. Since temperature changes will affect the elastic modulus of the cable, and thus affect the cable force measurement result, through multi-parameter fusion monitoring, the actual stress state of the cable can be evaluated more accurately, providing more comprehensive data support for the health assessment of the bridge structure.

[0034] The present invention also provides a method for using an integrated anchor for cable twisting and real-time cable force monitoring, including the following steps: Step 1: Install the level directly above the marked cable hole 6; Step 2: Install the anchor 2, the lower end plate 1 of the anchor, and the upper end plate 3 of the anchor at the tension end of the cable 9, and install the anchor 2, the lower end plate 1 of the anchor, and the upper end plate 3 of the anchor at the anchorage end of the cable 9; Step 3: Adjust the position of the anchor 2 and observe the level, level the anchors 2 at the tension end and the anchorage end of the cable 9. At this time, the marked cable hole 6 will be at the uppermost position; Step 4: Rotate the anchor 2 in the opposite direction of the torsion by the number of turns of the torsion to align the cable 9; Step 5: Weld the welded parts, the anchor 2, the lower end plate 1 of the anchor and the upper end plate 3 of the anchor together by electric welding to realize the limit of the anchor 2; Step 6: Measure the cable force of the cable 9 in real time through the pressure sensor 11.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0036] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. An integrated anchor for cable twisting and real-time monitoring of cable force, characterized in that, Comprising: Anchorage (2), through which a number of cable holes (6) are drilled, and a number of stay cables (9) respectively pass through the number of cable holes (6); A level, which is installed on the outer wall of the anchorage (2); An end plate assembly, which includes an anchorage lower end plate (1) and an anchorage upper end plate (3). The anchorage lower end plate (1) and the anchorage upper end plate (3) are respectively installed on two opposite end faces of the anchorage (2), and the anchorage lower end plate (1) and the anchorage upper end plate (3) are respectively rotationally connected to the anchorage (2) through a ball structure; a number of installation grooves are provided on the end face of the anchorage lower end plate (1) close to the anchorage (2); Pressure sensors (11), a number of which are provided. The number of pressure sensors (11) are respectively installed in the number of installation grooves, and the pressure sensors (11) are in contact with the outer wall of the anchorage (2); A welding piece, which is used to fix the anchorage (2), the anchorage lower end plate (1) and the anchorage upper end plate (3); Wherein, a first limit through hole is provided on the end face of the anchorage lower end plate (1) away from the anchorage (2), a second limit through hole is provided on the end face of the anchorage upper end plate (3) away from the anchorage (2), and the number of stay cables (9) all pass through the first limit through hole and the second limit through hole.

2. The integrated anchor for cable twisting and real-time monitoring of cable force according to claim 1, wherein: A number of knocking blocks (5) are installed on the outer wall of the anchorage (2).

3. The integrated anchor for cable twisting and real-time cable force monitoring according to claim 1, characterized in that: A first annular groove is provided on the end face of the lower end cover of the anchorage (2) close to the anchorage (2), and the first annular groove communicates with the first limit through hole; a second annular groove is provided on the end face of the upper end cover of the anchorage (2) close to the anchorage (2), and the second annular groove communicates with the second limit through hole; Sliding grooves (8) are provided on the inner walls of the first annular groove and the second annular groove. The ball structure includes a number of ball bodies (7), and the number of ball bodies (7) are slidably connected in the sliding grooves (8); the ball bodies (7) are rotationally connected to the outer side wall of the anchorage (2).

4. The integrated anchor for cable twisting and real-time cable force monitoring according to claim 3, characterized in that: The outer diameter of the middle section of the anchorage (2) is larger than the outer diameters of both ends of the anchorage (2).

5. The integrated anchor for cable twisting and real-time cable force monitoring according to claim 3, characterized in that: The inner diameters of the first annular groove and the second annular groove are both smaller than the outer diameter of the middle section of the anchorage (2).

6. The integrated anchor for cable twisting and real-time monitoring of cable force according to claim 1, wherein: The cable hole (6) includes a straight cylinder section and a gradually expanding section that are connected to each other. The small-diameter end of the gradually expanding section is arranged close to the straight cylinder section, and the small-diameter end of the gradually expanding section has the same size as the straight cylinder section.

7. The integrated anchor for cable twisting and real-time cable force monitoring according to claim 1, characterized in that: The welding piece includes a number of angle steels (10), and the anchorage (2), the anchorage lower end plate (1) and the anchorage upper end plate (3) are welded and fixed through the number of angle steels (10).

8. The integrated anchor for cable twisting and real-time monitoring of cable force according to claim 1, characterized in that: The level is a spirit bubble level (4).

9. Method for using an integrated anchor for cable twisting and real-time monitoring of cable force, based on the integrated anchor for cable twisting and real-time monitoring of cable force according to any one of claims 1-8, characterized in that, Including the following steps: Step 1: Install the level directly above the marked cable hole (6); Step 2: Install the anchorage (2), the anchorage lower end plate (1) and the anchorage upper end plate (3) at the tensioning end of the stay cable (9), and install the anchorage (2), the anchorage lower end plate (1) and the anchorage upper end plate (3) at the anchorage end of the stay cable (9); Step 3. Adjust the position of the anchor (2) and observe the level, and level the anchors (2) at the tensioning end and the anchoring end of the cable (9). Step 4. Rotate the anchor (2) in the opposite direction of the twisting for the number of turns of the twisting to align the cable (9). Step 5. Use electric welding to weld the welded parts, the anchor (2), the lower end plate (1) of the anchor and the upper end plate (3) of the anchor together to realize the limit of the anchor (2). Step 6. Use the pressure sensor (11) to measure the cable force of the cable (9) in real time.

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