Monitorable and adjustable three-span continuous damping cable structure and construction method

Abstract

The present invention discloses a monitorable and adjustable three-span continuous damping cable structure and construction method. The structure comprises a suspension bridge, comprising a stiffening beam and transition piers disposed at the bottom of each end of the stiffening beam. The transition piers are provided with two anchors at the end away from the stiffening beam. A main cable is provided between the anchors on each side of the stiffening beam. A damping module comprises damping cables disposed on both sides of the stiffening beam, with a plurality of cables disposed between the damping cables and the stiffening beam. A first anchoring assembly is provided between the anchors and the damping cables, and a second anchoring assembly is provided between the cables and the stiffening beam. Intelligent cable force sensing elements and intelligent cable force sensing elements are provided within the first and second anchoring assemblies. The present invention utilizes the damping module to place the stiffening beam in a four-way constrained state, effectively limiting deformation of the stiffening beam under wind loads. The intelligent cable force sensing elements and intelligent cable force sensing elements enable real-time monitoring of the operating status of the damping cables and cables, enabling timely detection of potential safety hazards.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge engineering, and more specifically, relates to a monitorable and adjustable three-span continuous damping cable structure and a construction method. Background Art

[0002] Bridge construction is generally categorized as beam bridges, arch bridges, cable-stayed bridges, and suspension bridges. Suspension bridges have a larger span. A suspension bridge, also known as a suspension bridge, is a bridge whose primary load-bearing superstructure is cables suspended from towers and anchored to both banks (or ends of the bridge). The primary load-bearing component is the cable, whose geometry is determined by the equilibrium of forces and generally approximates a parabola.

[0003] A suspension bridge consists of many key components, including main cables, pylons, anchors, hangers, stiffening beams, and deck structures. The main cables are the primary load-bearing components of a suspension bridge. They are suspended from pylons and anchored to anchors on both sides of the bridge. Hangers connect the main cables and stiffening beams (or deck structures), transferring deck loads to the main cables. Stiffening beams primarily support deck loads and transfer wind loads, while also providing lateral support for the main cables.

[0004] The load characteristics of a suspension bridge are that the load acting on the bridge deck is transmitted through the suspenders to the main cables, and then to the pylons and anchors, creating a clear force transmission path. Suspension bridges offer many unique advantages, including simple construction, large spans, reasonable structural loads, and aesthetically pleasing appearance. At present, suspension bridges have become one of the preferred bridge types for long-span bridges due to their strong spanning capacity. However, as the span increases, the stiffness of the suspension bridge decreases and its sensitivity to wind becomes increasingly greater. When wind flows through the bridge, it will form an uneven pressure distribution, causing the various components of the bridge to be subjected to aerodynamic forces of different directions and magnitudes. This change in aerodynamic force may cause various forms of vibration in the components, including flutter, vortex vibration, etc. Large-scale vibrations may cause discomfort to drivers and pedestrians, and may even cause traffic accidents. These vibrations may also cause fatigue damage to the bridge structure and may even cause structural damage. Therefore, in order to ensure the safety of suspension bridges under extreme weather conditions, wind-resistant design must be carried out. Wind-resistant design aims to improve the overall stability of the bridge structure and prevent instability under wind loads to ensure the stability and safety of the bridge under various extreme weather conditions. By improving the wind resistance of the bridge, structural damage and maintenance needs caused by wind-induced vibrations can be reduced, thereby extending the service life of the bridge and reducing maintenance costs.

[0005] Existing wind-resistant technologies for suspension bridges require separate anchorages for the wind-resistant cables and main cables, increasing construction costs and time. During operation, the stress state of the wind-resistant cables and cables cannot be monitored in real time, potentially leading to cable breakage or failure. This makes it difficult for maintenance personnel to accurately determine their current condition, increasing the difficulty and cost of maintenance. Furthermore, waiting until a problem occurs before repairs are performed can result in even greater losses. The long-term inability to monitor stress state in real time can lead to unnoticed damage to the wind-resistant cables and cables, impacting the overall structure and service life of the bridge. Summary of the Invention

[0006] In response to the above defects or improvement needs of the prior art, the present invention provides a monitorable and adjustable three-span continuous damping cable structure and construction method. The top of the stiffening beam is connected to the main cable through a hanger, and the bottom is connected to the damping cable through a cable, so that the stiffening beam is in a four-way constraint state, effectively limiting the deformation of the stiffening beam under wind load, so that the stiffening beam can remain stable in multiple directions, thereby greatly improving the overall wind resistance of the suspension bridge, and greatly increasing the critical flutter wind speed, thereby further improving the span capacity of the suspension bridge, and reducing the risk of structural damage caused by excessive deformation, thereby extending the service life of the bridge; by building in cable force intelligent sensing elements and rope force intelligent sensing elements in the first anchor assembly and the first anchor assembly, the working status of the damping cable and the cable can be monitored in real time. According to the real-time monitoring data, potential tension anomalies can be discovered and warned in time. By monitoring the stress state of the cable in real time, potential safety hazards can be discovered in time, and accurate fault location and repair suggestions can be provided to maintenance personnel. Ensure that the damping cable is always in normal working condition; the damping cable and the main cable are anchored in the anchor, which can reduce additional connectors and supporting structures, thereby reducing construction difficulty and cost, helping to save material costs and improve the economy of the bridge.

[0007] To achieve the above objectives, according to one aspect of the present invention, a monitorable and adjustable three-span continuous damping cable structure is provided, comprising a suspension bridge and a damping module, wherein the suspension bridge comprises a stiffening beam, and transition piers are provided at the bottom of both ends of the stiffening beam for supporting the ends of the stiffening beam, and the transition piers are provided with two anchors at the end away from the stiffening beam, and the anchors at each end are arranged on both sides of the stiffening beam, and a main cable is fixedly installed between the anchors on each side of the stiffening beam, and the main cables are respectively supported on the top of the cable towers to transfer the load of the stiffening beam to the cable towers, and a plurality of parallel and spaced hangers are provided between the stiffening beam and the main cable for transferring the load of the stiffening beam to the main cable;

[0008] The damping module includes a damping cable arranged between the anchors on both sides of the stiffening beam, the damping cable passes through the cable tower in the middle, and a number of parallel and spaced cables are provided between the damping cable and the stiffening beam. The anchor and the damping cable are fixedly connected by a first anchoring assembly, and the cable is fixedly connected to the stiffening beam by a second anchoring assembly, so that the stiffening beam is in a four-way constrained state, effectively limiting the deformation of the stiffening beam under wind load, thereby greatly improving the overall wind resistance of the suspension bridge.

[0009] Furthermore, the first anchoring assembly includes an anchor cup, and an external thread is provided on the outside of the anchor cup, a first locking piece is provided on the outside of the anchor cup, and an internal thread is provided inside the first locking piece, and a first anchor plate is provided on the outside of the first locking piece.

[0010] Furthermore, a cable force intelligent sensing element for real-time monitoring of the damping cable force is provided between the first anchor plate and the first locking member.

[0011] Furthermore, the second anchoring assembly includes an anchor box, and the anchor box is fixedly connected to the cross-part inside the stiffening beam. A second locking piece is provided at one end of the anchor box, and a thread is provided inside the second locking piece. A second anchor plate is provided between the second locking piece and the anchor box, and a third anchor plate is provided between the second anchor plate and the anchor box. The second anchor plate and the third anchor plate, and a cable guide are provided inside the anchor box, and the cable guide is sleeved on the surface of the cable.

[0012] Furthermore, an intelligent cable force sensing element for monitoring the cable force in real time is provided between the second anchor plate and the second locking member.

[0013] Furthermore, it is characterized in that the anchoring positions of the cables and the hangers on the stiffening beam are on the same cross section.

[0014] Furthermore, it is characterized in that damping cable anchor heads are provided at both ends of the damping cable, a cable anchor head is provided at the fixed connection end of the cable and the stiffening beam, and an external thread is provided on the outside of the cable anchor head.

[0015] Furthermore, the damping cable needs to be always located below the stiffening beam during operation, and the distance from the damping cable to the bottom of the stiffening beam is controlled according to 3 times the live load deformation.

[0016] Furthermore, it is characterized in that the cable needs to be kept in a taut state at all times, and the minimum cable force during operation is not less than 10 tons.

[0017] According to a second aspect of the present invention, there is provided a construction method for a monitorable and adjustable three-span continuous damping cable structure, comprising the following steps:

[0018] S100: Fixing one end of the cable to the stiffening beam through the second anchor assembly, and installing a cable force intelligent sensing element;

[0019] S200: Install a damping cable between the anchors on both sides of the stiffening beam, securely connect it to the anchors via a second anchor assembly, ensure it passes through the designed position of the cable tower, and install a cable force intelligent sensing element;

[0020] S300: Fix each cable to the damping cable and ensure that the cables are parallel to each other;

[0021] S400: Tension the damping cables and stays to ensure they remain taut at all times, adjust the cable and rope forces to the design requirements, and anchor them in the anchorages on both sides;

[0022] S500: The internal force of the damping cable or cable is monitored in real time through the cable force intelligent sensing element and the rope force intelligent sensing element to determine whether the working status of the damping cable or cable is normal. If any abnormality is found, the internal force of the damping cable or cable should be adjusted in time through the jack to meet the design requirements.

[0023] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0024] 1. The present invention provides a monitorable and adjustable three-span continuous damping cable structure, in which the top of the stiffening beam is connected to the main cable via a hanger, and the bottom is connected to the damping cable via a cable, so that the stiffening beam is in a four-directional constraint state, effectively limiting the deformation of the stiffening beam under wind load, so that the stiffening beam can remain stable in multiple directions, thereby greatly improving the overall wind resistance of the suspension bridge, greatly increasing the critical flutter wind speed, thereby further improving the span capacity of the suspension bridge, and reducing the risk of structural damage caused by excessive deformation, thereby extending the service life of the bridge.

[0025] 2. The present invention's monitorable and adjustable three-span continuous damping cable structure incorporates intelligent cable force sensing elements in the first anchor assembly and the second anchor assembly, enabling real-time monitoring of the operating status of the damping cable and the cable. Based on this real-time monitoring data, potential tension anomalies can be promptly detected and warned. By monitoring the cable's stress state in real time, potential safety hazards can be promptly identified, providing maintenance personnel with accurate fault location and repair recommendations. This ensures that the damping cable is always in normal working condition.

[0026] 3. The present invention provides a monitorable and adjustable three-span continuous damping cable structure, in which both the damping cable and the main cable are anchored in the anchorage, which can reduce additional connectors and supporting structures, thereby reducing construction difficulty and cost, helping to save material costs and improve the economy of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a front view of a monitorable and adjustable three-span continuous damping cable structure according to an embodiment of the present invention;

[0028] Figure 2 This is a structural diagram of a first anchoring assembly of a monitorable and adjustable three-span continuous damping cable structure according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the connection between the stiffening beams and the damping cables of a monitorable and adjustable three-span continuous damping cable structure according to an embodiment of the present invention;

[0030] Figure 4 This is a structural diagram of a second anchoring assembly of a monitorable and adjustable three-span continuous damping cable structure according to an embodiment of the present invention;

[0031] Figure 5 The present invention is a flowchart of a method for constructing a monitorable and adjustable three-span continuous damping cable structure.

[0032] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-main cable, 2-suspender, 3-stiffening beam, 4-tower, 5-transition pier, 6-anchor, 7-damping cable, 71-damping cable anchor head, 8-cable, 81-cable anchor head, 9-first anchoring assembly, 91-anchor cup, 92-first locking piece, 93-first anchor pad, 94-cable force intelligent sensing element, 10-second anchoring assembly, 101-second locking piece, 102-second anchor pad, 103-third anchor pad, 104-anchor box, 105-cable guide tube, 106-cable force intelligent sensing element. DETAILED DESCRIPTION

[0033] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to illustrate the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] In this patent, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0037] like Figure 1-4 As shown, an embodiment of the present invention provides a monitorable and adjustable three-span continuous damping cable structure, including a suspension bridge and a damping module, wherein the suspension bridge includes a stiffening beam 3, and transition piers 5 are provided at the bottom of both ends of the stiffening beam 3 for supporting the ends of the stiffening beam 3, and the transition piers 5 are provided with two anchors 6 at the end away from the stiffening beam 3, and the anchors 6 at each end are arranged on both sides of the stiffening beam 3, and a main cable 1 is fixedly installed between the anchors 6 on each side of the stiffening beam 3, and the main cables 1 are respectively supported on the top of the towers 4 for transferring the load of the stiffening beam 3 to the towers 4, and a number of parallel and spaced hangers 2 are provided between the stiffening beam 3 and the main cable 1 for transferring the load of the stiffening beam 3 to the main cable 1; through the hangers between the stiffening beam 3 and the main cable 1 2. The load on the stiffening beam 3 is effectively transferred to the main cable 1, and then transferred to the tower 4 and anchor 6 by the main cable 1. This structure can effectively disperse the load and reduce local stress concentration. The design of the tower 4 and anchor 6 provides a stable support point, ensuring the stability of the entire suspension bridge, especially when subjected to dynamic loads such as wind and traffic. The design of the suspension bridge allows a larger span because the main cable 1 can support the stiffening beam 3 over a longer distance. The hanger 2 between the stiffening beam 3 and the main cable 1 provides a certain degree of flexibility, which helps to absorb the slight deformation of the stiffening beam 3 caused by factors such as temperature changes and traffic loads, reducing the risk of cracks and other structural damage. Suspension bridges usually have beautiful curves and spectacular appearances and can become landmark buildings.

[0038] The damping module includes a damping cable 7 provided between the anchors 6 on both sides of the stiffening beam 3, with damping cable anchor heads 71 ​​provided at both ends of the damping cable 7 for anchoring in the anchors 6, the middle of the damping cable 7 passes through the cable tower 4, a plurality of parallel and spaced cables 8 are provided between the damping cable 7 and the stiffening beam 3, the fixed connection end of the cable 8 and the stiffening beam 3 is provided with a cable anchor head 81, the outside of the cable anchor head 81 is provided with an external thread, and the anchor position of the cable 8 and the suspender 2 on the stiffening beam 3 is on the same cross section; The setting of the damping cable 7 can absorb and disperse the vibration energy generated by the bridge under the action of external factors (such as wind, earthquake, etc.). The damping cable 7 passes through the cable tower 4 and works together with the cable 8 between the stiffening beams 3 to further strengthen the control of bridge vibration, thereby improving the overall stability of the bridge. The arrangement of the damping cable 7 and the cable 8 helps to form a stable wind-resistant system. When strong wind acts on the bridge, the damping cable 7 can act like a huge "pendulum" to offset the impact of the wind on the bridge through reverse movement, thereby reducing The damping module can reduce the shaking degree of the bridge. By reducing the vibration and shaking of the bridge, the damping module helps to reduce the fatigue damage and wear of the bridge components, which can not only extend the service life of the bridge, but also reduce the frequency of repair and replacement of components, thereby reducing maintenance costs. The design of the damping module takes into account the multi-order modal vibration reduction of the bridge, and can effectively damp multiple vibration modes to improve the overall vibration reduction effect. By adjusting the parameters of the cable 8 and the damping cable 7, such as stiffness and position, the damping effect can be optimized to achieve precise control of specific vibration modes. The setting of the damping module significantly reduces the vibration and shaking of the bridge caused by external factors. Under extreme weather or geological conditions (such as strong winds, earthquakes, etc.), the damping module can significantly improve the safety of the bridge. By absorbing and dispersing vibration energy, the damping module helps prevent excessive deformation or damage of the bridge. The anchorage position of the cable 8 and the hanger 2 on the stiffening beam 3 is on the same cross section, which helps to maintain the compactness of the structure while improving the reliability and accuracy of the system.

[0039] Furthermore, the damping cable 7 and the main cable 1 are both anchored in the anchor 6, which can reduce additional connectors and supporting structures, thereby reducing construction difficulty and cost, helping to save material costs and improve the economy of the bridge.

[0040] Furthermore, the damping module also includes a first anchoring assembly 9 and a second anchoring assembly 10 , the anchor 6 and the damping cable 7 are fixedly connected via the first anchoring assembly 9 , and the cable 8 is fixedly connected to the stiffening beam 3 via the second anchoring assembly 10 .

[0041] like Figure 2As shown, the first anchoring assembly 9 includes an anchor cup 91, and an external thread is provided on the outer side of the anchor cup 91, a first locking piece 92 is provided on the outer side of the anchor cup 91, and an internal thread is provided inside the first locking piece 92, and a first anchor plate 93 is provided on the outer side of the first locking piece 92 for dispersing the internal force of the damping cable 7 to the anchor 6 to avoid stress concentration. The external thread is provided on the outer side of the anchor cup 91, which cooperates with the internal thread inside the first locking piece 92 to provide a strong anchoring force to ensure that the connection between the damping cable 7 and the anchor 6 is firm and reliable. The first anchor plate 93 is designed to disperse the internal force of the damping cable 7 to the anchor 6 to avoid stress concentration. The internal force of 7 is dispersed to the anchor 6, which helps to avoid stress concentration in the anchoring area, reduce the generation and expansion of cracks, and improve the durability of the structure. The first locking member 92 is used in conjunction with the anchor cup 91 and the first anchor pad 93 to enhance the reliability of the entire anchoring system, ensure that the damping cable 7 can work stably under various load and environmental conditions, and reduce safety risks caused by unstable connections. The design of the first anchoring component 9 improves the overall performance of the entire cable-stayed bridge structure, and enhances the bearing capacity and durability of the bridge by ensuring the stability and safety of the damping cable 7.

[0042] Furthermore, a cable force intelligent sensing element 94 is provided between the first anchor plate 93 and the first locking member 92. The damping cable 7 is anchored to the inner wall of the anchor 6, and the anchor head transmits the anchoring force to the inner wall of the anchor 6 through the first anchor plate 93. The cable force intelligent sensing element 94 can monitor the stress conditions of the damping cable 7 in real time, including key parameters such as tension and pressure. Through high-precision sensor technology, it can accurately capture the mechanical changes of the cable under different working conditions and promptly issue early warning signals, thereby effectively preventing the damping cable 7 from breaking or being damaged due to factors such as overload, relaxation, and fatigue. The cable force intelligent sensing element 94 can significantly improve the safety and reliability of the system. By monitoring the stress state of the cable in real time, the cable force intelligent sensing element 94 can promptly detect potential safety hazards and provide maintenance personnel with accurate fault location and repair suggestions. In addition, the intelligent characteristics of the component can also realize remote monitoring and automatic alarm, further reducing the probability of accidents.

[0043] like Figure 4As shown, the second anchor assembly 10 includes an anchor box 104, and the anchor box 104 is fixedly connected to the diaphragm inside the stiffening beam, and a second locking piece 101 is provided at one end of the anchor box 104, and a thread is provided inside the second locking piece 101 for anchoring the cable 8, a second anchor pad 102 is provided between the second locking piece 101 and the anchor box 104, and a third anchor pad 103 is provided between the second anchor pad 102 and the anchor box 104, and the second anchor pad 102 and the third anchor pad 103 are used to disperse the internal force of the cable 8 to the stiffening beam 3 to avoid stress concentration, and a cable guide 105 is provided inside the anchor box 104, and the cable guide 105 is sleeved on the surface of the cable 8 for protecting and fixing the cable 8, and the cable provides a A fixed channel ensures the stability and safety of the cable during tensioning and use, and is beneficial to the corrosion protection of the anchor end of the cable beam. The coordinated use of the anchor box 104 and the second locking member 101, as well as the threaded design, can effectively anchor the cable 8, ensuring that the cable 8 remains stable under various loads and is not easily loosened or detached. The second anchor plate 102 and the third anchor plate 103 are designed to disperse the internal force of the cable 8 to the stiffening beam. This design helps avoid stress concentration in the anchoring area, thereby reducing the generation and expansion of cracks and improving the durability of the structure. The cable guide 105 is designed to protect and secure the cable 8, providing a fixed channel to ensure the stability and safety of the cable 8 during tensioning and use. This helps reduce the vibration and swing of the cable 8 and extend its service life.

[0044] Furthermore, a cable force intelligent sensing element 106 is provided between the second anchor plate 102 and the second locking member 101 for real-time monitoring of the cable force of the cable 8. The cable 8 is inside the stiffening beam 3 through the anchor box 104, and the anchor box 104 is fixedly connected to the diaphragm inside the stiffening beam, and the cable anchor head 81 acts on the second anchor plate 102 and the third anchor plate 103 of the anchor box 104; the setting of the cable force intelligent sensing element 106 can monitor the cable force of the cable 8 in real time, which not only helps to timely discover and warn of potential tension anomalies, but also provides valuable data support for health monitoring and maintenance of bridge structures, and can timely discover problems and take measures to ensure the safe operation of the bridge. Through the monitoring of the cable force intelligent sensing element 106, the working status of the cable 8 can be accurately grasped, which is conducive to the safe operation of the bridge. It provides strong protection. When the cable force intelligent sensing element 106 monitors that the cable has not reached the specified cable force, it may become a failed cable. These failed cables 8 transfer the lost cable force to other components, which may cause the load borne by other components to suddenly increase or stress concentration. Therefore, real-time monitoring of cable force is very important for preventing such risks. When abnormal cable force is detected, the tensioning equipment can be used to restore the cable force to the design requirement to ensure the stability of the bridge. The design of the cable force intelligent sensing element 106 makes it no longer necessary to attach the sensor to the surface of the cable 8. Instead, a ring fixed to the anchor end of the cable 8 is used as the measuring body, which improves the service life of the sensor. The cable force intelligent sensing element can transmit data to the monitoring platform in real time through a wireless network, which is convenient for real-time analysis and processing of data.

[0045] Furthermore, the damping cable 7 must always be located below the stiffening beam 3 during operation. The distance from the damping cable 7 to the bottom of the stiffening beam 3 is controlled at three times the live load deformation. This places the stiffening beam 3 in a four-way constrained state, equivalent to providing vertical downward damping at each hanger 2 position. The stiffening beam 3 relies on its own wind resistance, effectively improving the wind resistance of the suspension bridge. Controlling the distance from the damping cable 7 to the bottom of the stiffening beam 3 at three times the live load deformation ensures that, under extreme load conditions, the damping cable 7 still has sufficient space to absorb and dissipate vibration energy without being excessively compressed or stretched, further enhancing the safety of the structure.

[0046] Furthermore, the cables 8 need to be kept taut at all times, with a minimum cable force of no less than 10 tons during operation. This allows the cables 8 to fully exert their supporting and fixing functions, ensuring the overall stability of the bridge or other structure. This ensures that the cables 8 have sufficient tension during operation, effectively resisting external loads and deformation and maintaining structural stability. By keeping the cables 8 taut, the force distribution in the structure can be made more uniform, avoiding structural damage caused by excessive local stress. Taut cables 8 and sufficient cable force can enhance the structure's wind and earthquake resistance, reducing structural vibration and deformation caused by wind loads or earthquakes.

[0047] Combine Figure 1-2 ,like Figure 3 As shown, the present invention provides a construction method for a monitorable and adjustable three-span continuous damping cable structure, comprising the following steps:

[0048] S100: One end of the cable 8 is fixedly connected to the stiffening beam through the second anchor assembly 10, and the cable force intelligent sensing element 106 is installed;

[0049] S200: Install the damping cable 7 between the anchors 6 on both sides of the stiffening beam 3, securely connect it to the anchors 6 via the second anchor assembly 10, ensure that it passes through the designed position of the tower 4, and install the cable force intelligent sensing element 94;

[0050] S300: Fix each cable 8 to the damping cable 7 and ensure that the cables 8 are parallel to each other;

[0051] S400: tensioning the damping cable 7 and the stay cable 8 to ensure they are always in a taut state, adjusting the cable and cable forces to the design requirements, and anchoring them in the anchorages 6 on both sides;

[0052] S500: The internal force of the damping cable 7 or the cable 8 is monitored in real time through the cable force intelligent sensing element 94 and the rope force intelligent sensing element 106 to determine whether the working status of the damping cable 7 or the cable 8 is normal. If any abnormality is found, the internal force of the damping cable 7 or the cable 8 should be adjusted in time through the jack to meet the design requirements.

[0053] It will be easily understood by those skilled in the art that 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 and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A monitorable and adjustable three-span continuous damping cable structure, characterized in that: The invention comprises a suspension bridge and a damping module, wherein the suspension bridge comprises a stiffening beam (3), transition piers (5) are provided at the bottom of both ends of the stiffening beam (3) for supporting the ends of the stiffening beam (3), the transition piers (5) are provided with two anchors (6) at one end away from the stiffening beam (3), and the anchors (6) at each end are arranged on both sides of the stiffening beam (3), a main cable (1) is fixedly installed between the anchors (6) on each side of the stiffening beam (3), and the main cables (1) are respectively supported on the tops of the towers (4), and a plurality of parallel and spaced suspenders (2) are provided between the stiffening beam (3) and the main cables (1) for transferring the load of the stiffening beam (3) to the main cables (1); The damping module includes a damping cable (7) provided between anchors (6) on both sides of the stiffening beam (3), the damping cable (7) passes through the tower (4), a plurality of parallel and spaced cables (8) are provided between the damping cable (7) and the stiffening beam (3), the anchor (6) and the damping cable (7) are fixedly connected via a first anchoring assembly (9), and the cable (8) is fixedly connected to the stiffening beam (3) via a second anchoring assembly (10), so that the stiffening beam (3) is in a four-way constrained state, effectively limiting the deformation of the stiffening beam (3) under wind load, thereby significantly improving the overall wind resistance of the suspension bridge; The first anchoring assembly (9) includes an anchor cup (91), and the outer side of the anchor cup (91) is provided with an external thread, the outer side of the anchor cup (91) is provided with a first locking member (92), and the interior of the first locking member (92) is provided with an internal thread, and the outer side of the first locking member (92) is provided with a first anchor plate (93); A cable force intelligent sensing element (94) for real-time monitoring of the cable force of the damping cable (7) is provided between the first anchor plate (93) and the first locking member (92); The second anchoring assembly (10) includes an anchor box (104), and the anchor box (104) is fixedly connected to the transverse partition inside the stiffening beam (3), a second locking member (101) is provided at one end of the anchor box (104), a thread is provided inside the second locking member (101), a second anchor pad (102) is provided between the second locking member (101) and the anchor box (104), a third anchor pad (103) is provided between the second anchor pad (102) and the anchor box (104), the second anchor pad (102) and the third anchor pad (103), a cable guide (105) is provided inside the anchor box (104), and the cable guide (105) is sleeved on the surface of the cable (8); A cable force intelligent sensing element (106) for real-time monitoring of the cable force of the cable (8) is provided between the second anchor plate (102) and the second locking member (101).

2. The monitorable and adjustable three-span continuous damping cable structure according to claim 1, characterized in that: The anchoring positions of the cable (8) and the suspender rod (2) on the stiffening beam (3) are on the same cross section.

3. The monitorable and adjustable three-span continuous damping cable structure according to claim 1, characterized in that: Damping cable anchor heads (71) are provided at both ends of the damping cable (7), and a cable anchor head (81) is provided at the end where the cable (8) is fixedly connected to the stiffening beam (3). The cable anchor head (81) is provided with an external thread on its exterior.

4. The monitorable and adjustable three-span continuous damping cable structure according to claim 3, characterized in that: The damping cable (7) needs to be always located below the stiffening beam (3) during operation, and the distance from the damping cable (7) to the bottom of the stiffening beam (3) is controlled according to three times the live load deformation.

5. The monitorable and adjustable three-span continuous damping cable structure according to claim 1, characterized in that: The cable (8) needs to be kept in a taut state at all times, and the minimum cable force during operation should be no less than 10 tons.

6. A construction method for a monitorable and adjustable three-span continuous damping cable structure according to any one of claims 1 to 5, characterized in that: The steps include: S100: One end of the cable (8) is fixedly connected to the stiffening beam via the second anchor assembly (10), and a cable force intelligent sensing element (106) is installed; S200: Installing a damping cable (7) between the anchors (6) on both sides of the stiffening beam (3), fixedly connecting the damping cable (7) to the anchor (6) through a second anchor assembly (10), ensuring that the damping cable passes through the designed position of the tower (4), and installing a cable force intelligent sensing element (94); S300: Fix each cable (8) to the damping cable (7) and ensure that the cables (8) are parallel to each other; S400: tensioning the damping cable (7) and the stay cable (8) to ensure that they are always kept taut, adjusting the cable force and the cable force to the design requirements, and anchoring them in the anchorages (6) on both sides; S500: The internal force of the damping cable (7) or the cable (8) is monitored in real time through the cable force intelligent sensing element (94) and the rope force intelligent sensing element (106) to determine whether the working state of the damping cable (7) or the cable (8) is normal. If an abnormality is found, the internal force of the damping cable (7) or the cable (8) should be adjusted in time through the jack to meet the design requirements.

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