Variable-stiffness semi-rigid structure construction method suitable for construction changing and renewing project

Abstract

The invention discloses a variable-stiffness semi-rigid structure construction method suitable for rebuilding and renewal projects, a variable-stiffness semi-rigid structure is constructed by combining various assemblies, the stiffness is adjustable, different engineering requirements and load conditions are met, in the construction stage, a lower cable structure provides overall stiffness, safety and stability are ensured, and after an upper steel member is closed, the lower cable structure is connected with a lower steel member. The lower cable structure and the lower cable structure jointly form an overall stress system, structural rigidity is enhanced, wind resistance and seismic resistance are improved, external loads are effectively dispersed, the service life is prolonged, and in a construction changing and renewing project, the scheme flexibly adjusts the structural rigidity, adapts to a complex construction environment, is coordinated with an original structure and guarantees the stability of a new structure. Standardized components and modular design are adopted, the construction efficiency and quality are improved, dependence on single components and skills of constructors is reduced, the construction difficulty and risk are reduced, the construction period is shortened, and the construction method has remarkable technical advantages and is suitable for various complex construction scenes.

Description

Technical Field

[0001] The invention relates to the technical field of building steel structures, and in particular to a variable-rigidity semi-rigid structure construction method suitable for reconstruction and continuation projects. Background Art

[0002] With the continuous development of construction technology, variable stiffness semi-rigid structures have been widely used in renovation and reconstruction projects due to their unique mechanical properties and construction convenience. This structure can adjust its stiffness distribution according to different load conditions and construction requirements, thereby optimizing the stress performance of the overall structure. Variable stiffness semi-rigid structures can achieve flexible changes in stiffness by adjusting the layout and size of structural components according to different usage requirements. This structure can make full use of the mechanical properties of the material, making the structure more reasonable when subjected to stress and reducing unnecessary material waste. At the same time, due to the standardization and modular design of structural components, the construction is more convenient and efficient, reducing construction costs. However, in traditional construction methods, the construction of variable stiffness semi-rigid structures often has the following problems: (1) Due to the complexity of structural components and the cumbersomeness of construction steps, the construction period is long; (2) During the construction process, due to the influence of various factors, it is difficult to ensure the accuracy of structural components and the stability of the overall structure; (3) During the construction process, a large number of cradles are often required for temporary support of the structure, resulting in high construction costs. Summary of the invention

[0003] In view of this, the present invention proposes a variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects, which can effectively solve the defects of the prior art such as long construction period, difficult quality control and high construction cost.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects, specifically comprising:

[0006] Obtaining components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure;

[0007] During the construction phase, the overall structural stiffness of the variable stiffness semi-rigid structure is provided based on the lower cable structure;

[0008] In the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

[0009] As a further optional solution of the variable stiffness semi-rigid structure construction method applicable to the reconstruction and continuation project, during the construction stage, the overall structural stiffness of the variable stiffness semi-rigid structure is provided according to the lower cable structure, specifically including:

[0010] The original concrete stands were completed and the surrounding supporting steel structure was installed;

[0011] Install and tension the lower cable structure to the designed position;

[0012] A heavy crane is used to install the entire radial steel member to the designed position. The radial beam is connected to the lower radial cable through a strut. Each radial member is connected by annular rods to prevent out-of-plane tipping. In this state, the upper steel member only acts on the lower cable structure with external loads, and the annular rods only serve as lateral supports. The vertical stiffness of the entire structure is provided by the cable members.

[0013] As a further optional scheme of the variable stiffness semi-rigid structure construction method applicable to the reconstruction and continuation project, in the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force to provide the variable stiffness semi-rigid structure with an overall structural stiffness, which specifically includes:

[0014] While keeping the cable structure stressed, continue to install the remaining radial steel members and circumferential rods until all radial steel members are installed and the circumferential rods are finally closed;

[0015] After the construction of the entire cable-supported structure system is completed, a post-construction review is conducted on the entire cable-supported structure system to ensure that the stress requirements of the structure under normal and extreme operating conditions are met.

[0016] A variable stiffness semi-rigid structure construction system suitable for reconstruction and continuation projects, comprising:

[0017] An acquisition module is used to acquire components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure;

[0018] A construction module for providing the overall structural stiffness of a variable stiffness semi-rigid structure based on a lower cable structure during the construction phase;

[0019] The forming module is used to close the upper steel member during the forming stage, and to form an integral force based on the lower cable structure and the upper steel member, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

[0020] A variable stiffness semi-rigid structure construction simulation method suitable for reconstruction and continuation projects, specifically comprising:

[0021] Obtaining a component model of a variable stiffness semi-rigid structure, the component model comprising a digital model of radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod, a lower cable-rod system and a roof cross brace, wherein the radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod and a roof cross brace constitute a digital model of an upper steel member, and the lower cable-rod system constitutes a digital model of a lower cable structure;

[0022] During the construction phase, based on the digital model of the lower cable structure, simulation software is used to simulate the overall structural stiffness provided by the lower cable structure, as well as its deformation and stress during the construction process;

[0023] In the forming stage, the simulation software is used to simulate the process of closing the upper steel member, and based on the overall stress condition formed by the lower cable structure and the upper steel member, the overall structural stiffness, deformation and stress state of the variable stiffness semi-rigid structure are further simulated;

[0024] Based on the simulation results, the safety and stability of the variable stiffness semi-rigid structure during the construction and forming process are evaluated, the construction plan is optimized, and the construction quality and safety are ensured.

[0025] As a further optional scheme for the variable stiffness semi-rigid structure construction simulation method suitable for renovation and continuation projects, the method also includes real-time monitoring of key nodes and key processes in the construction process based on the simulation results, and the real-time monitoring includes monitoring key parameters of structural deformation, stress, and cable force, as well as real-time monitoring of the construction process through sensors and cameras.

[0026] A computing device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the variable stiffness semi-rigid structure construction method applicable to renovation and continuation projects are implemented.

[0027] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the variable stiffness semi-rigid structure construction method applicable to renovation and continuation projects.

[0028] The beneficial effects of the present invention are as follows: by combining components such as radial V-braces, radial diagonal braces, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, the construction method can construct a variable stiffness semi-rigid structure. The characteristic of this structure is that its stiffness can be adjusted as needed to adapt to different engineering requirements and load conditions. During the construction stage, the scheme relies on the lower cable structure to provide the overall structural stiffness, which means that before the structure is fully formed, the lower cable structure can serve as the main support system to ensure safety and stability during the construction process. When the upper steel member is closed, the lower cable structure and the upper steel member together form an overall force system. This design not only enhances the overall stiffness of the structure, but also improves its wind resistance and Seismic performance, in addition, because the upper and lower structures are subjected to force together, the external loads can be more effectively dispersed and resisted, thereby extending the service life of the structure. In reconstruction projects, it is often necessary to expand or renovate the existing structure, which requires the new construction method to be coordinated with the original structure while ensuring the stability and safety of the new structure. This solution can adapt well to this complex and changeable construction environment by flexibly adjusting the structural stiffness. In addition, this construction method adopts standardized components and modular design concepts, so it can greatly improve construction efficiency and quality. At the same time, because the upper and lower structures are subjected to force together, it can reduce dependence on individual components and over-reliance on the skill level of construction personnel, thereby reducing construction difficulty and risk, thereby shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic flow chart of a variable stiffness semi-rigid structure construction method applicable to a reconstruction and continuation project of the present invention;

[0031] Figure 2 It is a schematic diagram of the composition of a variable stiffness semi-rigid structure construction system suitable for reconstruction and continuation projects of the present invention;

[0032] Figure 3 It is a flow chart of a variable stiffness semi-rigid structure construction simulation method applicable to a reconstruction and continuation project of the present invention;

[0033] Figure 4 The figure is a schematic diagram of the composition of a computing device according to the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] refer to Figures 1 to 4 , a variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects, specifically comprising:

[0036] Obtaining components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure;

[0037] During the construction phase, the overall structural stiffness of the variable stiffness semi-rigid structure is provided based on the lower cable structure;

[0038] In the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

[0039] In this embodiment, by combining components such as radial V-braces, radial diagonal braces, external compression ring trusses, upper radial beams, annular rods, lower cable rod systems and roof cross supports, the construction method can construct a variable stiffness semi-rigid structure. The characteristic of this structure is that its stiffness can be adjusted as needed to adapt to different engineering requirements and load conditions. During the construction stage, the scheme relies on the lower cable structure to provide the overall structural stiffness, which means that before the structure is fully formed, the lower cable structure can serve as the main support system to ensure safety and stability during the construction process. When the upper steel components are closed, the lower cable structure and the upper steel components together form an overall force system. This design not only enhances the overall stiffness of the structure, but also improves its wind resistance, earthquake resistance, etc. performance. In addition, since the upper and lower structures are subjected to force together, the external load can be more effectively dispersed and resisted, thereby extending the service life of the structure. In reconstruction projects, it is often necessary to expand or renovate the existing structure, which requires the new construction method to be coordinated with the original structure while ensuring the stability and safety of the new structure. This solution can adapt well to this complex and changeable construction environment by flexibly adjusting the structural stiffness. In addition, this construction method adopts standardized components and modular design concepts, so it can greatly improve construction efficiency and quality. At the same time, since the upper and lower structures are subjected to force together, it can reduce dependence on individual components and over-reliance on the skill level of construction personnel, thereby reducing construction difficulty and risk, thereby shortening the construction period.

[0040] Preferably, during the construction phase, providing the overall structural stiffness of the variable stiffness semi-rigid structure according to the lower cable structure specifically includes:

[0041] The original concrete stands were completed and the surrounding supporting steel structure was installed;

[0042] Install and tension the lower cable structure to the designed position;

[0043] A heavy crane is used to install the entire radial steel member to the designed position. The radial beam is connected to the lower radial cable through a strut. Each radial member is connected by annular rods to prevent out-of-plane tipping. In this state, the upper steel member only acts on the lower cable structure with external loads, and the annular rods only serve as lateral supports. The vertical stiffness of the entire structure is provided by the cable members.

[0044] In this embodiment, by installing the circumferential support steel structure, a stable boundary condition is provided for the entire structure, which helps to resist external loads and deformation. The radial steel members are connected to the lower radial cables through struts to form a stable force system, thereby enhancing the overall stability of the structure. The connection of the annular rods not only prevents the radial members from tipping out of the plane, but also provides additional lateral support, further improving the stability of the structure. The lower cable structure is tensioned to the designed position, ensuring that the prestress distribution of the cable members is reasonable, thereby providing sufficient vertical stiffness. In this state, the upper steel members mainly bear the external loads and transmit them to the lower cable structure. The cable member effectively bears the vertical load and optimizes the stiffness of the overall structure through its high elastic modulus and reasonable prestress distribution; a heavy crane is used to install the entire radial steel member to the designed position, which reduces the difficulty of manual handling and installation and improves construction efficiency. The quick connection of the support rod and the annular rod simplifies the construction steps and shortens the construction period. This technical solution makes full use of the force characteristics of the cable structure, reduces the number of materials and components required for the traditional rigid structure, and helps to reduce engineering costs. At the same time, due to the improvement in construction efficiency, it also reduces the use time of manpower and machinery, further reducing construction costs.

[0045] It should be noted that the specific steps of using a heavy crane to install the entire radial steel member to the designed position, connecting the radial beam with the lower radial cable through the support rod, and connecting each radial member through the annular rod can be summarized into the following stages:

[0046] Construction preparation and heavy crane positioning: Review the construction drawings in detail, clarify the installation positions and elevations of radial steel components, struts, circumferential rods and other components, and select a suitable crane parking position based on the construction site conditions and crane performance;

[0047] Lifting and installation of radial steel components: Tie the lifting rigging on the radial steel components to ensure that the tying is firm and safe, install the hook on the crane arm, and check whether the connection between the hook and the lifting rigging is reliable, start the crane, slowly lift the radial steel components to a certain height from the ground, adjust the angle and length of the crane arm according to the construction drawings, and lift the radial steel components to the designed position. During the lifting process, pay attention to the operation status of the crane and the stability of the radial steel components to ensure construction safety, make preliminary connections between the radial steel components and adjacent components, such as using bolts or temporary fixing devices, and use measuring tools to check whether the elevation and position of the radial steel components meet the design requirements. According to the inspection results, make necessary corrections and adjustments to ensure accurate installation of the radial steel components;

[0048] Installation of the brace and the connection between the radial beam and the lower radial cable: According to the construction drawings, determine the installation position and length of the brace, use lifting rigging or manual work to install the brace to the predetermined position, connect the brace with the radial beam and the lower radial cable, such as by bolts, welding, etc., check the installation quality and connection reliability of the brace, adjust the length and angle of the brace according to the construction drawings, so that the radial beam is closely connected with the lower radial cable, if necessary, add gaskets or adjustment devices between the brace and the radial beam or the lower radial cable to ensure a firm and stable connection;

[0049] Circumferential rod connection and overall structural stability: According to the construction drawings, determine the installation position and length of the circumferential rod, use lifting rigging or manual work to install the circumferential rod to the predetermined position, connect the circumferential rod to the adjacent radial members, such as by bolts, welding, etc., check the installation quality and connection reliability of the circumferential rod, observe the stability and deformation of the overall structure, handle any abnormalities in a timely manner, and if necessary, take additional reinforcement measures to improve the stability and bearing capacity of the overall structure;

[0050] Construction monitoring and quality control: During the construction process, real-time monitoring of key parts and key processes is carried out, and data during the construction process, such as the operating status of the crane, the installation position of components, elevation changes, etc., is recorded and analyzed. If any abnormal situation is found, timely measures are taken to deal with it to ensure construction safety and quality. Strict quality control is carried out on each process, including inspections of component size, shape, material, etc., and regular inspections and calibrations of construction machinery and materials are carried out to ensure their safety and reliability. Safety education and skills training are provided to construction personnel to improve their safety awareness and operating skills.

[0051] Preferably, in the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force to provide the variable stiffness semi-rigid structure with an overall structural stiffness, which specifically includes:

[0052] While keeping the cable structure stressed, continue to install the remaining radial steel members and circumferential rods until all radial steel members are installed and the circumferential rods are finally closed;

[0053] After the construction of the entire cable-supported structure system is completed, a post-construction review is conducted on the entire cable-supported structure system to ensure that the stress requirements of the structure under normal and extreme operating conditions are met.

[0054] In this embodiment, by closing the upper steel member and forming an integral force with the lower cable structure, this technical solution significantly enhances the overall stiffness of the structure. This combination enables the structure to more effectively distribute and resist external loads when subjected to force, thereby improving the stability and durability of the structure. While maintaining the force on the cable structure, the remaining radial steel members and annular rods continue to be installed. This step ensures the continuity and controllability of the construction process. By gradually adding members, the bearing capacity of the structure can be gradually enhanced, while avoiding the risk of structural instability caused by excessive one-time loading. After the construction of the entire cable-supported structural system is completed, a post-construction review is carried out. This step is an important measure to ensure the safety of the structure. Through the review, timely detection and repair can be carried out. Possible problems in construction can be found and corrected to ensure that the force requirements of the structure under normal and extreme conditions of use are met, which helps to reduce safety risks during the use of the structure and extend its service life. This technical solution helps to improve construction efficiency and quality through clear construction steps and review processes. Construction personnel can clearly understand the tasks and goals of each stage, so as to more effectively organize construction resources and arrange construction plans. At the same time, the review process also helps to ensure the stability and reliability of construction quality. The design of variable stiffness semi-rigid structure improves the adaptability and flexibility of the structure. This structure can be adjusted and optimized according to different usage requirements and load conditions to meet the usage requirements under various complex working conditions.

[0055] A variable stiffness semi-rigid structure construction system suitable for reconstruction and continuation projects, comprising:

[0056] An acquisition module is used to acquire components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure;

[0057] A construction module for providing the overall structural stiffness of a variable stiffness semi-rigid structure based on a lower cable structure during the construction phase;

[0058] The forming module is used to close the upper steel member during the forming stage, and to form an integral force based on the lower cable structure and the upper steel member, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

[0059] A variable stiffness semi-rigid structure construction simulation method suitable for reconstruction and continuation projects, specifically comprising:

[0060] Obtaining a component model of a variable stiffness semi-rigid structure, the component model comprising a digital model of radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod, a lower cable-rod system and a roof cross brace, wherein the radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod and a roof cross brace constitute a digital model of an upper steel member, and the lower cable-rod system constitutes a digital model of a lower cable structure;

[0061] During the construction phase, based on the digital model of the lower cable structure, simulation software is used to simulate the overall structural stiffness provided by the lower cable structure, as well as its deformation and stress during the construction process;

[0062] In the forming stage, the simulation software is used to simulate the process of closing the upper steel member, and based on the overall stress condition formed by the lower cable structure and the upper steel member, the overall structural stiffness, deformation and stress state of the variable stiffness semi-rigid structure are further simulated;

[0063] Based on the simulation results, the safety and stability of the variable stiffness semi-rigid structure during the construction and forming process are evaluated, the construction plan is optimized, and the construction quality and safety are ensured.

[0064] In this embodiment, by obtaining component models of the variable stiffness semi-rigid structure, including digital models of various steel components and cable structures, the technical solution can accurately simulate the various components of the structure, which is helpful for detailed planning and design of the structure before construction, and improves the accuracy and predictability of the construction; in the construction stage, the overall structural stiffness, deformation and stress conditions of the lower cable structure are simulated by simulation software, so that the stress state and deformation trend of the structure can be understood in real time, which is helpful for timely discovery and resolution of problems that may arise during the construction process, optimization of construction process management, and ensuring construction quality and safety; in the forming stage, the process of closing the upper steel components and the overall stress conditions are simulated by simulation software, so that the overall structural stiffness, deformation and stress state of the variable stiffness semi-rigid structure can be further evaluated, which is helpful for ensuring the structure in the forming stage. Safety and stability during construction and forming can be improved, and the risk of structural failure can be reduced. According to the simulation results, the construction plan can be optimized. For example, the construction sequence, construction method or construction parameters can be adjusted according to the simulated stress state and deformation trend to further improve construction efficiency and quality. Through precise simulation, the trial and error cost in the construction process can be reduced. At the same time, the optimized construction plan can make more effective use of resources and time and reduce construction costs. Simulation can identify potential problems and bottlenecks in advance, so as to make targeted preparations and responses before construction, which helps to speed up the construction progress and improve construction efficiency. Through precise construction simulation, the long-term stability and safety of the structure during construction and use can be ensured, which helps to enhance the sustainability of the project and reduce the cost of later maintenance and repair.

[0065] Preferably, the method also includes real-time monitoring of key nodes and key processes in the construction process based on the simulation results, and the real-time monitoring includes monitoring key parameters of structural deformation, stress, and cable tension, as well as real-time monitoring of the construction process through sensors and cameras.

[0066] In this embodiment, by real-time monitoring of key parameters such as structural deformation, stress, and cable force, the stress state and deformation of the structure can be instantly understood. This real-time nature enables the construction team to respond quickly to potential problems and avoid or reduce the risk of structural damage. The use of sensors and cameras provides high-precision data, which helps to accurately assess the health of the structure and the safety of the construction process; real-time monitoring enables the construction team to grasp the key information of the construction process in real time, so as to more accurately control the construction quality and progress, which helps to ensure that the construction proceeds smoothly according to the predetermined plan and standards; real-time monitoring data can be used as an important basis for construction decision-making. When structural deformation or stress abnormality is found, the construction team can quickly adjust the construction plan to avoid potential safety risks. Real-time monitoring can also help the construction team optimize resource allocation and improve construction efficiency; real-time monitoring can timely discover and warn potential safety hazards, such as structural instability, cable force abnormality, etc., so as to take necessary preventive measures to ensure safety and reliability during the construction process; real-time monitoring data can also be used for post-construction analysis and improvement. Through the analysis of monitoring data, the construction team can understand the actual stress condition and deformation trend of the structure, providing valuable reference for subsequent maintenance and repair.

[0067] A computing device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the variable stiffness semi-rigid structure construction method applicable to renovation and continuation projects are implemented.

[0068] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the variable stiffness semi-rigid structure construction method applicable to renovation and continuation projects.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects, characterized in that: Specifically include: Obtaining components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure; During the construction phase, the overall structural stiffness of the variable stiffness semi-rigid structure is provided based on the lower cable structure; In the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

2. A variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects according to claim 1, characterized in that: During the construction phase, the overall structural stiffness of the variable stiffness semi-rigid structure is provided based on the lower cable structure, specifically including: The original concrete stands were completed and the surrounding supporting steel structure was installed; Install and tension the lower cable structure to the designed position; A heavy crane is used to install the entire radial steel member to the designed position. The radial beam is connected to the lower radial cable through a strut. Each radial member is connected by annular rods to prevent out-of-plane tipping. In this state, the upper steel member only acts on the lower cable structure with external loads, and the annular rods only serve as lateral supports. The vertical stiffness of the entire structure is provided by the cable members.

3. A variable stiffness semi-rigid structure construction method suitable for reconstruction and continuation projects according to claim 2, characterized in that: In the forming stage, the upper steel member is closed, and the lower cable structure and the upper steel member are subjected to an integral force to provide the overall structural stiffness for the variable stiffness semi-rigid structure, specifically including: While keeping the cable structure stressed, continue to install the remaining radial steel members and circumferential rods until all radial steel members are installed and the circumferential rods are finally closed; After the construction of the entire cable-supported structure system is completed, a post-construction review is conducted on the entire cable-supported structure system to ensure that the stress requirements of the structure under normal and extreme operating conditions are met.

4. A variable stiffness semi-rigid structure construction system suitable for reconstruction and continuation projects, characterized in that: include: An acquisition module is used to acquire components of a variable stiffness semi-rigid structure, wherein the components of the variable stiffness semi-rigid structure include radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods, a lower cable rod system and roof cross supports, wherein the radial V-struts, radial diagonal struts, external pressure ring trusses, upper radial beams, annular rods and roof cross supports constitute upper steel components, and the lower cable rod system constitutes a lower cable structure; A construction module for providing the overall structural stiffness of a variable stiffness semi-rigid structure based on a lower cable structure during the construction phase; The forming module is used to close the upper steel member during the forming stage, and to form an integral force based on the lower cable structure and the upper steel member, thereby providing overall structural stiffness for the variable stiffness semi-rigid structure.

5. A variable stiffness semi-rigid structure construction simulation method suitable for reconstruction and continuation projects, characterized in that: Specifically include: Obtaining a component model of a variable stiffness semi-rigid structure, the component model comprising a digital model of radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod, a lower cable-rod system and a roof cross brace, wherein the radial V-braces, radial diagonal braces, an outer compression ring truss, an upper radial beam, an annular rod and a roof cross brace constitute a digital model of an upper steel member, and the lower cable-rod system constitutes a digital model of a lower cable structure; During the construction phase, based on the digital model of the lower cable structure, simulation software is used to simulate the overall structural stiffness provided by the lower cable structure, as well as its deformation and stress during the construction process; In the forming stage, the simulation software is used to simulate the process of closing the upper steel member, and based on the overall stress condition formed by the lower cable structure and the upper steel member, the overall structural stiffness, deformation and stress state of the variable stiffness semi-rigid structure are further simulated; Based on the simulation results, the safety and stability of the variable stiffness semi-rigid structure during the construction and forming process are evaluated, the construction plan is optimized, and the construction quality and safety are ensured.

6. A variable stiffness semi-rigid structure construction simulation method suitable for reconstruction and continuation projects according to claim 5, characterized in that: The method also includes real-time monitoring of key nodes and key processes in the construction process based on the simulation results. The real-time monitoring includes monitoring key parameters of structural deformation, stress, and cable force, as well as real-time monitoring of the construction process through sensors and cameras.

7. A computing device, characterized in that The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the variable stiffness semi-rigid structure construction method applicable to renovation and continuation projects as described in any one of claims 1 to 3 are implemented.

8. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, which, when executed by a processor, implements the steps of the variable stiffness semi-rigid structure construction method applicable to reconstruction and continuation projects as described in any one of claims 1 to 3.

Images