Construction monitoring system and construction method of spoke type string structure

Abstract

The construction monitoring system comprises a response monitoring module, an information transmission module and a data storage and analysis module, the response monitoring module comprises a cable force monitoring unit, a steel structure stress monitoring unit and a node three-dimensional displacement monitoring unit, and the cable force monitoring unit, the steel structure stress monitoring unit and the node three-dimensional displacement monitoring unit are arranged on the spoke type string structure. The response monitoring module is used for monitoring inhaul cable force, longitudinal steel structure beam stress and supporting rod position coordinate data in the construction process in real time, and the response monitoring module transmits the monitored data to the data storage and analysis module through the information transmission module for storage and analysis. According to the scheme, the cable force monitoring unit, the steel structure stress monitoring unit and the node three-dimensional displacement monitoring unit are deployed according to the symmetry of the spoke type string structure, and the control level of precision in the construction process is rapidly evaluated through comparison of data actually measured by the cable force monitoring unit, the steel structure stress monitoring unit and the node three-dimensional displacement monitoring unit; and the construction precision and the construction efficiency of the spoke type string structure are further improved.

Description

Technical Field

[0001] This invention relates to the field of structural engineering technology, specifically to a construction monitoring system and construction method for a spoke-type tensioned cable structure. Background Technology

[0002] The spoke-type tensioned cable structure is a self-balancing prestressed structure with a central rigid ring as the core support point, an outer ring beam around it, and radially arranged tensioned cable structures bounded by the central rigid ring and the outer ring beam. To ensure overall structural reliability, the radially arranged tensioned cable structures are connected by circumferential beams to form a unified whole. This system features lightweight construction, large spans, and efficient load-bearing capacity, making it particularly suitable for large-space buildings such as stadiums and airport terminals.

[0003] For spoke-type tensioned structures, a reasonable construction procedure, precise installation of steel components, and accurate control of the prestress of the cable components are crucial to ensuring structural safety and the final formed state. Currently, the construction process of spoke-type tensioned structures relies heavily on manual labor for controlling construction accuracy, requires a large amount of manpower, and is prone to introducing subjective errors.

[0004] Chinese patent publication number "CN 115077609 B" discloses an automatic monitoring system and method for construction processes. This scheme uses a laser displacement sensor to monitor displacement, a fiber optic stress sensor to measure component strain, and a pressure gauge on the tension jack's oil pump to monitor cable force. While this method can achieve automated monitoring of displacement, stress, and cable force, the monitoring of cable force relies on the jacks. The jacks need to be calibrated beforehand to establish a correlation curve between oil pressure and cable force. Different jacks have different correlation curves, making the operation somewhat complex and affecting the accuracy of the detection results.

[0005] Chinese patent publication number "CN 115077609 B" discloses an intelligent monitoring system and method for prestressed cable structures, and Chinese patent publication number "CN 119308518 A" discloses a construction process for lifting tensioned space frames using fiber optic smart cables. Although the solutions disclosed in these two patents have optimized the means of real-time cable force monitoring compared to the solution disclosed in patent "CN 115077609 B", and improved the cable force monitoring efficiency to a certain extent, the above methods are insufficient for monitoring the installation accuracy of struts and cable clamps during the construction of spoke-type tensioned structures. Therefore, how to further improve the construction accuracy and efficiency of spoke-type tensioned structures is a problem that needs to be solved in this field. Summary of the Invention

[0006] To address the technical problems of low construction accuracy and efficiency in existing spoke-type tensioned structures, the present invention aims to provide a construction monitoring system for spoke-type tensioned structures, which can improve the construction accuracy and efficiency of spoke-type tensioned structures. Furthermore, the invention provides a corresponding construction method for the monitoring system, effectively overcoming the problems existing in the prior art.

[0007] To achieve the above objectives, the present invention provides a construction monitoring system for a spoke-type tensioned structure, comprising a response monitoring module, an information transmission module, and a data storage and analysis module. The response monitoring module includes a cable force monitoring unit, a steel structure stress monitoring unit, and a node three-dimensional displacement monitoring unit, which are respectively deployed on the spoke-type tensioned structure for real-time monitoring of cable force, longitudinal steel beam stress, and support rod position coordinate data during construction. The response monitoring module and the data storage and analysis module interact through the information transmission module, transmitting the monitored data to the data storage and analysis module for storage and analysis.

[0008] Furthermore, the cable force monitoring unit includes several fiber optic sensors and a first data acquisition component. The fiber optic sensors interact with the first data acquisition component. The fiber optic sensors are built into the cable to form a smart cable. The fiber optic sensors can output different signals to the first data acquisition component according to the changes in the cable force. The first data acquisition component can process the different signals to obtain the cable force information and transmit the cable force information to the data storage and analysis module through the information transmission module.

[0009] Furthermore, several fiber optic sensors, corresponding to the number of cables, are distributed within each cable to monitor the cable tension of each cable, forming a fully intelligent cable system.

[0010] Furthermore, several fiber optic sensors are distributed within the cable at least at the location of the maximum cable stress ratio, corresponding to the bidirectional axis of symmetry, to monitor cable force and form a partial smart cable.

[0011] Furthermore, the steel structure stress monitoring unit includes several strain sensors and a second data acquisition component. The strain sensors interact with the second data acquisition component. The strain sensors can output different signals according to the strain changes of the structure at their location. The second data acquisition component can process the different signals to obtain the stress information of the longitudinal steel structure beam and transmit the stress information to the data storage and analysis module through the information transmission module.

[0012] Furthermore, the strain sensors are arranged at the locations of maximum stress in the longitudinal steel beams throughout the construction process, with one measuring point at each location. Considering the symmetry of the spoke-type tensioned truss, the strain sensors are selected from the outer ring beams at the bidirectional axis of symmetry, and the strain sensors are distributed at the locations of maximum stress in the longitudinal steel beams along the bidirectional axis of symmetry.

[0013] Furthermore, the node three-dimensional displacement monitoring unit includes several three-dimensional displacement sensors and a third data acquisition component. The several three-dimensional displacement sensors interact with the third data acquisition component. The three-dimensional displacement sensors output the position information of their current location. The third data acquisition component can output the three-dimensional coordinates of the current position based on the information and transmit the three-dimensional coordinate information to the data storage and analysis module through the information transmission module.

[0014] Furthermore, the three-dimensional displacement sensors are arranged with a measuring point at the lowest or highest point of the intermediate rigid ring, and the three-dimensional displacement sensors are distributed on all the support rods on the bidirectional axis of symmetry, at the connection position between the support rod and the longitudinal steel structure beam; the three-dimensional displacement sensors are distributed in the middle of the support rod.

[0015] To achieve the above objectives, the present invention provides a construction method for a construction monitoring system for a spoke-type tensioned cable structure, the construction method comprising the following steps:

[0016] S1: Install the central rigid ring support frame;

[0017] S2: Install the central rigid ring. After installation, install the node three-dimensional displacement sensors according to the construction monitoring system layout design.

[0018] S3: Install the outer ring beam. After installation, according to the construction monitoring system layout design, place strain sensors at the corresponding points.

[0019] S4: Installation of the first longitudinal steel structure beam and support rod;

[0020] S5: Installation of the second longitudinal steel structure beam and support rod, and simultaneous installation of the circumferential beam between the first and second longitudinal steel structure beams;

[0021] S6: Complete the installation of all longitudinal steel structure beams, support rods, and circumferential beams in a clockwise or counterclockwise sequence, and arrange strain sensors and node three-dimensional displacement sensors at the corresponding points according to the construction monitoring system layout design.

[0022] S7: Debug the data acquisition and data transmission for all steel structure stress monitoring and node three-dimensional displacement monitoring to ensure normal acquisition and communication;

[0023] S8: The cables that have arrived on site are extended. Based on the data from the three-dimensional displacement sensor, the three-dimensional coordinates of the support rod position are obtained. Then, by comparing the two three-dimensional displacement data of the same support rod, the verticality information of the support rod is obtained, thereby determining the installation deviation of the support rod. Next, the positions of the cable clamps that have been pre-calculated and calibrated on the cable surface are corrected.

[0024] S9: Install all cables, ensuring that both ends of the cables are fixed in the designated positions;

[0025] S10: Adjust the initial length of the cable, and then debug the cable force monitoring data of the smart cable;

[0026] S11: Based on the construction simulation results under this working condition, and by referring to the three-dimensional coordinate data of the strut, adjust the connection position between the cable clamp and the strut, and complete the connection and fixation between the cable clamp and the strut, and between the cable clamp and the cable body according to the design requirements;

[0027] S12: The cables are tensioned using a batch-by-batch, graded, cyclic tensioning method.

[0028] Furthermore, during the S12 tensioning process, the cable force, steel structure stress, and three-dimensional displacement of the nodes are monitored in real time for each tensioning step to ensure consistency between the monitored values ​​and the construction simulation analysis results. When the monitoring results deviate from the theoretical values, the cable internal force is kept consistent with the theoretical values. When the cable force does not meet the tension force requirements, supplementary tensioning measures are taken to ensure that the cable force reaches the target value.

[0029] The construction monitoring system and construction method for spoke-type tensioned structures provided by this invention deploy cable force, steel structure stress, and node three-dimensional displacement monitoring units on the spoke-type tensioned structure according to the symmetry of the structure. By comparing the measured data from the cable force, steel structure stress, and node three-dimensional displacement monitoring units, the accuracy control level during construction can be quickly evaluated, thereby further improving the construction accuracy and efficiency of spoke-type tensioned structures. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] Figure 1 This is a schematic diagram of the construction monitoring system for the spoke-type tensioned cable structure.

[0032] Figure 2 A schematic diagram of the distribution structure of a construction monitoring system for a spoke-type tensioned cable structure with a pair of bidirectional axes of symmetry;

[0033] Figure 3 for Figure 2 AA structural cross-sectional view;

[0034] Figure 4 for Figure 2 BB structure sectional view;

[0035] Figure 5 A schematic diagram of the distribution structure of a construction monitoring system for a spoke-type tensioned cable structure with multiple pairs of bidirectional axes of symmetry;

[0036] Figure 6 for Figure 5 Structural sectional view;

[0037] Figure 7 This is a schematic diagram of the construction steps for the spoke-type tensioned cable structure of this vehicle.

[0038] Figure 8 This is a schematic diagram of the connection nodes between the cables and struts in the spoke-type tensioned cable structure of this vehicle.

[0039] The following are the component labels in the attached diagram:

[0040] 1. Tensioned cable module 2. Outer ring beam module 3. Rigid ring module 4. Circumferential beam module 11. Longitudinal steel structure beam 12. Cable 13. Support rod

[0041] 5. Response monitoring module 6. Information transmission module 7. Data storage and analysis module 51. Cable force monitoring unit 52. Steel structure stress monitoring unit 53. Node three-dimensional displacement monitoring unit 511. Fiber optic sensor 521. Strain sensor 531. Three-dimensional displacement sensor 61. Gateway 62. Cloud server. Detailed Implementation

[0042] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0043] Due to the technical problems of low construction accuracy and efficiency in existing spoke-type tensioned structures, this invention provides a construction monitoring system for spoke-type tensioned structures. This system deploys cable force, steel structure stress, and node three-dimensional displacement monitoring units on the spoke-type tensioned structure according to its symmetry. By comparing the measured data from these monitoring units, the system quickly evaluates the accuracy control level during construction, further improving the construction accuracy and efficiency of spoke-type tensioned structures. Furthermore, this solution also provides a corresponding construction method for the spoke-type tensioned structure construction monitoring system to ensure its proper application.

[0044] Among them, see Figures 2-5 The spoke-type tensioned structure includes tensioned module 1, outer ring beam module 2, rigid ring module 3, and circumferential beam module 4.

[0045] The tensioning module 1 includes an upper chord unit, a lower chord unit, and a vertical support rod 13. The upper chord unit and the lower chord unit are arranged symmetrically, and their two ends are connected to the rigid ring module 3 and the outer ring beam module 4, respectively, to form a tensioning structure. The upper chord unit and the lower chord unit are connected to each other through the vertical support rod 13.

[0046] Specifically, the rigid ring module 3 is located at the center point of the outer ring beam module 2. The upper chord unit is composed of several longitudinal steel structure beams 111. The several longitudinal steel structure beams 111 are symmetrically distributed along the inner circumference of the outer ring beam module 2, and their two ends are connected to the upper ends of the outer ring beam module 2 and the rigid ring module 3, respectively.

[0047] Adjacent longitudinal steel beams 111 are equidistantly spaced circumferential beam modules, which are used to tightly connect the various parts of the structure, form a stable overall frame, effectively disperse and guide the transmission of external forces, avoid local stress concentration, and thus improve the structure's bending and torsional resistance.

[0048] The lower chord unit is composed of several cables 121, which are set to correspond to the longitudinal steel structure beams 111 in the upper chord unit. Their two ends are respectively connected to the lower ends of the outer ring beam module 2 and the rigid ring module 3 for tensioning.

[0049] The vertical steel beams 111 and cables 121 are connected by vertical support rods 13, which transmit loads to prevent structural instability and enhance overall stability.

[0050] The specific structure and working principle of the spoke-type tensioned structure are well known to those skilled in the art, and will not be described in detail here.

[0051] This solution, by deploying a construction monitoring system on the aforementioned spoke-type tensioned structure, enables real-time data monitoring during construction, ensuring the level of precision control during construction and further improving the construction accuracy and efficiency of the spoke-type tensioned structure.

[0052] See Figure 1 The construction monitoring system for the spoke-type tensioned structure provided in this solution includes a response monitoring module 5, an information transmission module 6, and a data storage and analysis module 7.

[0053] The response monitoring module 5 is deployed on the spoke-type tensioned structure to monitor data in real time during construction. The response monitoring module 5 interacts with the data storage and analysis module 7 through the information transmission module 6, transmitting the monitored data to the data storage and analysis module 7 for storage and analysis.

[0054] Furthermore, the response monitoring module 5 includes a cable force monitoring unit 51, a steel structure stress monitoring unit 52, and a node three-dimensional displacement monitoring unit 53. The cable force monitoring unit 51, the steel structure stress monitoring unit 52, and the node three-dimensional displacement monitoring unit 53 monitor the cable internal force, the stress change of the longitudinal steel structure beam 111, and the position information of the longitudinal steel structure beam 111 and the support rod 13, respectively, so as to make timely adjustments to the position of the components during the construction process.

[0055] The cable force monitoring unit 51 is used to monitor the internal force of the cable, and the monitoring data can reflect the degree of deviation in the overall stress state of the structure. The cable force monitoring unit 51 includes several fiber optic sensors 511 and a first data acquisition component. The fiber optic sensors 511 interact with the first data acquisition component. The fiber optic sensors 511 are built into the cable 121 to form a smart cable. The fiber optic sensors 511 can output different signals to the first data acquisition component according to the changes in the internal force of the cable. The first data acquisition component can process the different signals to obtain the cable force information and transmit the cable force information to the data storage and analysis module 7 through the information transmission module 6.

[0056] If conditions permit, each cable 121 can be a smart cable, which can monitor the cable force of each cable, forming a fully smart cable. This allows for real-time monitoring of the cable force in each tensioning step, improving the accuracy of the monitoring data.

[0057] If conditions do not permit, see Figures 2-4 Considering the symmetry of the spoke-type tensioned cable structure, this scheme preferably selects at least 4 cables on (or near) the bidirectional axis of symmetry to replace them with smart cables for cable force monitoring, thus forming a partial smart cable arrangement.

[0058] See Figures 5-6 If the structure has multiple pairs of bidirectional axes of symmetry, the cable corresponding to the bidirectional axis of symmetry at the position with the maximum cable stress ratio should be selected first according to the design parameters. In this way, the accuracy control level during construction can be quickly evaluated by comparing the measured data of the symmetrical positions.

[0059] The location of the maximum cable stress ratio is obtained from construction simulation analysis, and will not be elaborated on here.

[0060] The steel structure stress monitoring unit 52 is distributed on the longitudinal steel structure beam 111 and is used to monitor the stress change of the longitudinal steel structure beam 111. The steel structure stress monitoring unit 52 includes several strain sensors 521 and a second data acquisition component. The strain sensors 521 interact with the second data acquisition component. The strain sensors 521 can output different signals according to the strain change of the structure at their location. The second data acquisition component can process the different signals to obtain the stress information of the longitudinal steel structure beam 111 and transmit the stress information to the data storage and analysis module 7 through the information transmission module 6.

[0061] Regarding the distribution of strain sensors in this scheme, it is preferred that they be distributed in three locations, see [link to relevant documentation]. Figures 2-4 ,

[0062] First, a measuring point needs to be placed at the location of maximum stress in the longitudinal steel beam 111 throughout the entire construction process.

[0063] In addition, considering the symmetry of the spoke-type tensioned truss, at least the outer ring beam module 4 at the bidirectional axis of symmetry should be selected.

[0064] Finally, strain sensors 521 are arranged at the location of maximum stress on (or near) the longitudinal steel beam 111 along the bidirectional axis of symmetry.

[0065] The node three-dimensional displacement monitoring unit 53 includes several three-dimensional displacement sensors 531 and a third data acquisition component. The three-dimensional displacement sensors 531 and the third data acquisition component interact with each other. The three-dimensional displacement sensors 531 can output the position information of the support rod 13. The third data acquisition component can output the three-dimensional coordinates of the current position of the support rod 13 according to the information, and transmit the three-dimensional coordinate information of the support rod 13 to the data storage and analysis module 7 through the information transmission module 6.

[0066] This solution does not limit the structure of the 3D displacement sensor 531. For example, it could be a gyroscope, GPS locator, etc.

[0067] In this scheme, the three-dimensional displacement sensor 531 is preferably distributed in three locations. See details below. Figures 2-4 ,

[0068] First, at least one measuring point should be placed at the lowest or highest point of the intermediate rigid ring module 3.

[0069] Secondly, at least all struts 13 on (or near) the bidirectional axis of symmetry are selected at the connection points between the struts 13 and the longitudinal steel beam 111.

[0070] Finally, a three-dimensional displacement sensor 531 is arranged in the middle of each of the support rods 13 to monitor the three-dimensional displacement of the support rods 13.

[0071] The above-described deployment scheme for the three-dimensional displacement sensor 531 serves two purposes: firstly, it allows for position monitoring of key points on the longitudinal steel beam 111 to ensure the final structural alignment; secondly, by comparing two three-dimensional displacement data of the same support rod 13, it provides information on the verticality of the support rod 13, guiding the installation and adjustment of the cable clamps during construction.

[0072] For example, if the two three-dimensional displacement data of a certain support rod 13 are (x1, y1, z1) and (x2, y2, z2), then the angle between the support rod and the vertical direction can be obtained as follows: The verticality of support rod 13 can be adjusted based on this value to guide the installation of cable clamps.

[0073] The bidirectional axis of symmetry for the above-mentioned cable force, steel structure stress, and node three-dimensional displacement monitoring arrangement should preferably be the same. This allows for a rapid evaluation of the accuracy control level during construction by comparing measured data at symmetrical positions.

[0074] The information transmission module 6 mainly includes a gateway 61 and a cloud server 62. The gateway receives data from the acquisition system and converts it into a suitable network transmission format, which is then transmitted to the data storage and analysis module 7 via the wireless network.

[0075] The data storage and analysis module 7 stores the data transmitted by the information transmission module 6 into the database, and then analyzes and processes the data to achieve functions such as structural status assessment and anomaly diagnosis.

[0076] The above-described scheme constitutes a construction monitoring system for a spoke-type tensioned cable structure. Based on this system, this scheme also provides a construction method for the construction monitoring system of the spoke-type tensioned cable structure. See [link to relevant documentation]. Figure 7 The structural construction mainly includes the following steps:

[0077] S1: Install the central rigid ring support frame;

[0078] S2: Install the central rigid ring 3. After installation, install the node three-dimensional displacement sensor 531 according to the construction monitoring system layout design.

[0079] S3: Install outer ring beam 2. After installation, according to the construction monitoring system layout design, place strain sensors 521 at the corresponding points.

[0080] S4: Installation of the first longitudinal steel structure beam 111 + support rod 13;

[0081] S5: Install the second longitudinal steel structure beam 111 + support rod 13, and at the same time install the circumferential beam 4 between the first and second longitudinal steel structure beams 111;

[0082] S6: Complete the installation of all longitudinal steel structure beams 111, support rods 13, and circumferential beams 4 in a clockwise or counterclockwise order, and arrange strain sensors 521 and node three-dimensional displacement sensors 531 at the corresponding points according to the construction monitoring system layout design.

[0083] S7: Debug the data acquisition and data transmission for all steel structure stress monitoring and node three-dimensional displacement monitoring to ensure normal acquisition and communication;

[0084] S8: The arriving cables 121 are stretched, and then all cables 121 are inspected before installation. After confirming that everything is correct, the three-dimensional coordinates of the support rod 13 are obtained based on the data from the three-dimensional displacement sensor 531. Then, by comparing two three-dimensional displacement data of the same support rod 13, the verticality information of the support rod 13 is obtained, thereby determining the installation deviation of the support rod 13. Subsequently, the positions of the cable clamps pre-calculated and calibrated on the cable surface are corrected.

[0085] The pre-installation inspection of cable 121 in S8 includes, but is not limited to, cable diameter, length, anchorage, etc.

[0086] The pre-calculated and calibrated cable clamp positions mentioned in S8 are completed in the factory during the processing of cable components. Then, the cable clamps are installed and the connection between the cable clamps and the cable body is pre-tightened, but a certain amount of adjustment is reserved.

[0087] like Figure 8 As shown, when the cable clamp adopts the form of upper and lower clamps, the cable is first clamped by the upper and lower clamps, and then the fastening bolts are passed through the bolt holes for initial tightening. The initial tightening is carried out in a diagonal cross sequence, and the initial tightening torque is 30 to 50% of the final tightening torque.

[0088] S9: Install all cables 121, ensuring that both ends of the cables are fixed in the designated positions;

[0089] The installation of smart cables should adhere to the principle of "light loading and pulling to avoid excessive bending." Certain measures should be taken during hoisting installation. When hoisting, the bending radius of the cable should be controlled to be no less than 25 times the outer diameter of the cable and no less than 1.8m to prevent excessive bending from causing monitoring performance failure or damage. Simultaneously, the main lifting point should be set at the anchor section during hoisting to pull the entire cable. When the cable is long, multiple lifting points can be set up along the cable section for assistance (the bending situation of the cable should be observed in real time during on-site hoisting; if the bending radius of the cable cannot meet the requirements, additional auxiliary lifting points should be added) to evenly distribute the hoisting force and avoid localized stress concentration.

[0090] S10: Adjust the initial length of the cable, and then debug the cable force monitoring data of the smart cable to ensure normal data collection and communication;

[0091] S11: Based on the construction simulation results under this working condition, and referring to the three-dimensional coordinate data of the support rod 13, adjust the connection position between the cable clamp and the support rod 13. After ensuring that the position is correct, complete the connection and fixation between the cable clamp and the support rod, and between the cable clamp and the cable body according to the design requirements.

[0092] S12: The cable 121 is tensioned using a batch-by-batch, graded, cyclic tensioning method.

[0093] In S12, for tensioning in the same batch, in order to ensure the synchronization of tensioning, a graded loading measure is adopted, with the grade step size being 10% of the tension force.

[0094] In addition, during the tensioning process, the cable force, steel structure stress, and three-dimensional displacement of the nodes are monitored in real time for each tensioning step to ensure consistency with the construction simulation analysis results. If deviations occur, the tensioning process adheres to the principle of prioritizing force over form; that is, while ensuring structural safety, when discrepancies arise between the monitoring results and theoretical values, priority is given to ensuring the consistency of the cable internal force with the theoretical value. If the cable force does not meet the tensioning force requirements, supplementary tensioning measures can be taken to ensure that the cable force reaches the target value.

[0095] S13: Remove the central rigid ring support frame and complete the construction of the spoke-type tensioned structure.

[0096] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A construction monitoring system for a spoke-type tensioned cable structure, characterized in that, The system includes a response monitoring module, an information transmission module, and a data storage and analysis module. The response monitoring module comprises a cable force monitoring unit, a steel structure stress monitoring unit, and a node three-dimensional displacement monitoring unit. These units are deployed on the spoke-type tensioned structure and are used to monitor the cable force, longitudinal steel beam stress, and support rod position coordinates in real time during construction. The response monitoring module and the data storage and analysis module interact through the information transmission module, which transmits the monitored data to the data storage and analysis module for storage and analysis.

2. The construction monitoring system for a spoke-type tensioned cable structure according to claim 1, characterized in that, The cable force monitoring unit includes several fiber optic sensors and a first data acquisition component. The fiber optic sensors interact with the first data acquisition component. The fiber optic sensors are built into the cable to form a smart cable. The fiber optic sensors can output different signals to the first data acquisition component according to the changes in the cable force. The first data acquisition component can process the different signals to obtain the cable force information and transmit the cable force information to the data storage and analysis module through the information transmission module.

3. The construction monitoring system for a spoke-type tensioned cable structure according to claim 2, characterized in that, Several fiber optic sensors correspond to the number of cables and are distributed in each cable to monitor the cable force of each cable, forming a fully intelligent cable system.

4. The construction monitoring system for a spoke-type tensioned cable structure according to claim 2, characterized in that, The aforementioned fiber optic sensors are distributed at least within the cable where the bidirectional axis of symmetry is located at the position of maximum cable stress ratio, to monitor the corresponding cable force and form a partial smart cable.

5. The construction monitoring system for a spoke-type tensioned cable structure according to claim 1, characterized in that, The steel structure stress monitoring unit includes several strain sensors and a second data acquisition component. The strain sensors interact with the second data acquisition component. The strain sensors can output different signals according to the strain changes of the structure at their location. The second data acquisition component can process the different signals to obtain the stress information of the longitudinal steel beam and transmit the stress information to the data storage and analysis module through the information transmission module.

6. The construction monitoring system for a spoke-type tensioned cable structure according to claim 5, characterized in that, The strain sensors are distributed at the locations of maximum stress in the longitudinal steel beams throughout the construction process, with one measuring point at each location. Considering the symmetry of the spoke-type tensioned truss, the strain sensors are selected from the outer ring beams at the bidirectional axis of symmetry, and the strain sensors are distributed at the locations of maximum stress in the longitudinal steel beams along the bidirectional axis of symmetry.

7. The construction monitoring system for a spoke-type tensioned cable structure according to claim 1, characterized in that, The node three-dimensional displacement monitoring unit includes several three-dimensional displacement sensors and a third data acquisition component. The several three-dimensional displacement sensors interact with the third data acquisition component. The three-dimensional displacement sensors output the position information of their current location. The third data acquisition component can output the three-dimensional coordinates of the current location based on the information and transmit the three-dimensional coordinate information to the data storage and analysis module through the information transmission module.

8. The construction monitoring system for a spoke-type tensioned cable structure according to claim 7, characterized in that, The three-dimensional displacement sensors are arranged with a measuring point at the lowest or highest point of the intermediate rigid ring; the three-dimensional displacement sensors are distributed on all support rods on the bidirectional axis of symmetry, at the connection position between the support rod and the longitudinal steel structure beam; the three-dimensional displacement sensors are distributed in the middle of the support rod.

9. A construction method for a construction monitoring system for a spoke-type tensioned cable structure, characterized in that, The construction method includes the following steps: S1: Install the central rigid ring support frame; S2: Install the central rigid ring. After installation, install the node three-dimensional displacement sensors according to the construction monitoring system layout design. S3: Install the outer ring beam. After installation, according to the construction monitoring system layout design, place strain sensors at the corresponding points. S4: Installation of the first longitudinal steel structure beam and support rod; S5: Installation of the second longitudinal steel structure beam and support rod, and simultaneous installation of the circumferential beam between the first and second longitudinal steel structure beams; S6: Complete the installation of all longitudinal steel structure beams, support rods, and circumferential beams in a clockwise or counterclockwise sequence, and arrange strain sensors and node three-dimensional displacement sensors at the corresponding points according to the construction monitoring system layout design. S7: Debug the data acquisition and data transmission for all steel structure stress monitoring and node three-dimensional displacement monitoring to ensure normal acquisition and communication; S8: The cables that have arrived on site are extended. Based on the data from the three-dimensional displacement sensor, the three-dimensional coordinates of the support rod position are obtained. Then, by comparing the two three-dimensional displacement data of the same support rod, the verticality information of the support rod is obtained, thereby determining the installation deviation of the support rod. Next, the positions of the cable clamps that have been pre-calculated and calibrated on the cable surface are corrected. S9: Install all cables, ensuring that both ends of the cables are fixed in the designated positions; S10: Adjust the initial length of the cable, and then debug the cable force monitoring data of the smart cable; S11: Based on the construction simulation results under this working condition, and by referring to the three-dimensional coordinate data of the strut, adjust the connection position between the cable clamp and the strut, and complete the connection and fixation between the cable clamp and the strut, and between the cable clamp and the cable body according to the design requirements; S12: The cables are tensioned using a batch-by-batch, graded, cyclic tensioning method.

10. A construction method for a construction monitoring system for a spoke-type tensioned cable structure according to claim 9, characterized in that, During the S12 tensioning process, the cable force, steel structure stress, and three-dimensional displacement of the nodes are monitored in real time for each tensioning step to ensure consistency between the monitored values ​​and the construction simulation analysis results. When the monitoring results deviate from the theoretical values, the cable internal force is kept consistent with the theoretical values. If the cable force does not meet the tension force requirements, supplementary tensioning measures are taken to make the cable force reach the target value.

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