Steel structure transformer substation project high-altitude hanging point research method and system

Abstract

The invention relates to the field of steel structure transformer substation engineering construction, in particular to a steel structure transformer substation engineering high-altitude hanging point research method and system. Establishing a mechanical model; and carrying out hanging point optimization design and carrying capacity verification. Safety accidents caused by unreasonable hanging points, such as insufficient bearing capacity and the like are effectively avoided, the life safety of constructors is practically guaranteed, and a foundation is built for safe construction of the whole steel structure transformer substation project.

Description

Technical Field

[0001] This invention relates to the field of steel structure substation engineering construction, and in particular to a research method and system for high-altitude hanging points in steel structure substation engineering. Background Technology

[0002] With the continuous growth in electricity demand, the construction scale of steel structure substations is constantly expanding, and high-altitude operations during the construction process are becoming increasingly frequent. As key support points for suspending construction equipment and safety protection devices, the rationality and safety of the high-altitude suspension points play a decisive role in the progress of project construction and the safety of personnel.

[0003] Currently, the methods for determining high-altitude mounting points in steel structure substations have significant shortcomings. On the one hand, traditional methods rely heavily on the experience and judgment of construction workers. Due to the varying skill levels and experience of construction personnel, there is a lack of unified standards and scientific basis for mounting point placement. For example, in some projects, inexperienced construction workers may mistakenly select locations with insufficient load-bearing capacity as mounting points, which can easily lead to safety accidents during equipment hoisting or personnel operations. In other cases, some construction workers, in an effort to be on the safe side, excessively set up mounting points. While this may ensure safety to some extent, it results in material waste, significantly increases construction costs, and also affects construction efficiency and prolongs the project cycle.

[0004] On the other hand, the lack of readily available mounting points often presents a challenge during actual construction. When dealing with complex steel structure substations, especially in second-phase expansion projects, existing mounting point configurations are insufficient to meet the installation requirements of high-level surge arresters and PT equipment. Different types of steel structure substations vary significantly in structural characteristics and construction environments. Some substations are located in windy, open areas, while others are situated in mountainous terrain with complex topography. Traditional, universal methods are ill-suited to these complex conditions. This not only contradicts the concept of proactive safety management and fails to effectively prevent risks before construction, but also leads to frequent adjustments to the construction plan during the process, severely impacting project progress. Summary of the Invention

[0005] This invention provides a method and system for studying high-altitude hanging points in steel structure substation engineering. See the description below for details: A research method for high-altitude hanging points in steel structure substation engineering includes the following steps: S1 Data Acquisition and Analysis: Obtain design drawings of steel structure substations, construct 3D models, and monitor environmental parameters at the construction site in real time, including wind speed, temperature, and terrain conditions; S2 Mechanical Model Establishment: Based on the aforementioned three-dimensional model and mechanical principles, a finite element analysis model of the steel structure is established to simulate the stress distribution under the conditions of construction equipment hoisting and personnel operation, and to identify high-stress areas; S3 Hanging Point Optimization Design: Adjust the hanging point position according to the distribution of high stress areas and construction process requirements, evaluate stress distribution and deformation through comparison of multiple schemes, and select the optimal hanging point setting scheme; S4 Bearing Capacity Verification: Loading tests are conducted on selected hanging points to verify their bearing capacity and deformation under design loads, and the hanging point design is revised based on the test results.

[0006] Preferably, in step S1, the three-dimensional model is constructed using BIM software and integrates material properties, component dimensions, and connection node information.

[0007] Preferably, in step S2, the finite element analysis model is implemented using ANSYS or ABAQUS software, and the simulated working conditions include static load, dynamic wind load, and temperature stress coupling analysis.

[0008] Preferably, in step S3, the hanging point optimization design includes the following sub-steps: (a) Determine the preliminary location of the hanging point based on the hanging method and movement path of the construction equipment; (b) Calculate the stress concentration factor and deformation of the steel structure under different hanging point schemes using finite element analysis; (c) Combining safety thresholds and economic indicators, select the scheme with uniform stress distribution and optimal cost.

[0009] Preferably, in step S4, the loading test includes a physical loading test and a numerical simulation loading test. The physical loading test uses a hydraulic jack to apply load step by step, and the numerical simulation loading test uses finite element software to reproduce the actual load conditions.

[0010] Preferably, the method further includes step S5: marking the optimized hanging point positions on the three-dimensional model to generate a construction guidance document to guide the hanging position of the safety belt and the equipment hoisting path during high-altitude operations.

[0011] This invention also discloses a high-altitude hanging point setting system for steel structure substations, comprising: The data acquisition module is used to acquire design drawings and environmental parameters to build a 3D model; The mechanical analysis module uses finite element analysis software to build a mechanical model and simulate the force distribution. The optimization design module generates optimized hanging point schemes based on the mechanical analysis results and construction process requirements. The verification module verifies the load-bearing capacity of the hanging points through loading tests; The output module generates construction guidance documents for the hanging point locations.

[0012] Preferably, the optimization design module integrates a multi-objective optimization algorithm, which automatically outputs the optimal hanging point scheme under the constraints of stress uniformity, construction cost and safety.

[0013] The beneficial effects of the technical solution provided by this invention are: (1) This invention, relying on scientific research methods, comprehensively considers various factors such as the mechanical properties of the steel structure, the construction site environment, and the construction technology when determining the hanging points. By constructing a three-dimensional model, establishing a mechanical analysis model, and using finite element analysis software to simulate the stress conditions of various parts of the steel structure under different working conditions, it accurately identifies potential high-stress areas, and then rationally selects and optimizes the hanging point positions. After verification of the load-bearing capacity and necessary corrections and improvements, it ensures that the hanging points can stably bear the design load. This effectively avoids safety accidents caused by unreasonable hanging points, such as insufficient load-bearing capacity, and effectively protects the lives of construction personnel, laying a solid foundation for the safe construction of the entire steel structure substation project.

[0014] (2) Through scientific analysis and optimization, this invention reduces unnecessary hanging points. On the one hand, it directly reduces the procurement cost of hanging point materials; on the other hand, it reduces the labor costs incurred due to setting too many hanging points. In addition, by effectively avoiding safety accidents caused by hanging point issues, it avoids indirect costs such as economic compensation, project delay losses, and equipment damage repairs, saving enterprises a lot of money and improving the economic efficiency of the project.

[0015] (3) The research method provided by this invention has broad applicability and can flexibly address various types of steel structure substation projects. Whether it is a conventional steel structure substation, a substation with complex structures and special construction environments, or a new or expanded project of different scales, this method, combined with specific project characteristics, can determine a suitable hanging point scheme through processes such as data acquisition, mechanical analysis, hanging point optimization, and load-bearing capacity verification. This makes this method have broad application prospects in the power construction industry, and it can be promoted and used in different regions and under different construction conditions, driving the progress of construction technology throughout the industry. Attached Figure Description

[0016] Figure 1 A flowchart illustrating the specific method of this invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below.

[0018] Example 1: A conventional steel structure substation project Data Acquisition: First, complete design drawings of the substation were collected, covering key information such as the overall layout of the steel structure, detailed dimensions of each component, and material properties. Using professional 3D modeling software, an accurate 3D model of the substation's steel structure was constructed based on this data, providing a solid data foundation for subsequent simulation analysis. Simultaneously, various monitoring devices were deployed at the construction site to monitor and record environmental parameters in real time. During this project, the average wind speed was monitored to be 7 m / s, and the temperature fluctuated between 10℃ and 20℃, with the construction site terrain being relatively flat.

[0019] Mechanical Model Establishment: Based on the collected data and in accordance with mechanical principles, a mechanical analysis model of the steel structure was established using finite element analysis software. The model simulates a typical construction equipment hoisting scenario, aiming to realistically reflect the stress conditions of various parts of the steel structure during actual construction. Detailed analysis of the model revealed high stress at certain steel beam nodes; these areas will be the focus of initial site selection for hanging points.

[0020] Hanging point optimization design: Based on the high-stress areas identified through mechanical analysis and combined with actual construction process requirements, the hanging point positions are optimized and adjusted. The suspension method of the construction equipment is considered, such as whether to use single-point or multi-point suspension, and the movement path of the equipment during construction, to avoid the hanging point settings affecting the normal operation of the equipment. By calculating the stress distribution and deformation of the steel structure under different hanging point settings, the safety and feasibility of each scheme are evaluated from multiple candidate schemes. After multiple rounds of comparative analysis, the optimal hanging point setting scheme is finally determined.

[0021] Load-bearing capacity verification: The selected hanging point scheme was tested for load-bearing capacity using a simulated loading test. According to the design load requirements, the hanging points were gradually loaded, and high-precision measuring instruments were used to monitor the deformation of the hanging points during the loading process. The test results showed that the deformation of the hanging points under the design load met safety standards, proving that its load-bearing capacity met the actual engineering requirements. In subsequent actual construction, the optimized hanging point scheme was strictly followed, and the entire construction process proceeded smoothly without any safety issues. Furthermore, compared to similar projects in the past, the construction cost was reduced.

[0022] Example 2: A steel structure substation project in a complex terrain Data Acquisition: Given the substation's location in a mountainous area with complex terrain, in addition to collecting information from standard design drawings to construct a 3D model, detailed topographic data was obtained using methods such as UAV mapping and geological exploration. Simultaneously, a weather station was installed at the construction site to continuously monitor environmental parameters such as wind speed, wind direction, temperature, and humidity 24 hours a day. During the data acquisition period, the maximum wind speed recorded in the area reached 12 m / s, and there were significant diurnal temperature variations, with undulating terrain resulting in noticeable elevation differences in some areas.

[0023] Mechanical Model Establishment: When establishing the mechanical model, the influence of terrain factors on the stress of the steel structure is fully considered. For example, due to differences in elevation, some steel structural components will generate additional bending moments under their own weight. Finite element analysis software is used to simulate various working conditions, including the hoisting of construction equipment under strong winds and personnel working in different positions, to comprehensively analyze the stress state of various parts of the steel structure and identify multiple potential high-stress areas.

[0024] Optimized mounting point design: Taking into account the complex terrain conditions and construction techniques, the mounting point locations were optimized. For steel structures located near hillsides, considering that construction equipment may need to move along the slope, the mounting point locations were rationally adjusted to ensure that the mounting points could provide stable support during equipment movement. Through multiple calculations and comparisons of different schemes, the safety, feasibility, and impact on construction efficiency of each scheme were comprehensively evaluated, and the mounting point scheme suitable for this complex terrain was finally determined.

[0025] Load-bearing capacity verification: The load-bearing capacity of the hanging point scheme was verified using a combination of actual loading tests and simulated loading tests. First, simulated loading tests were conducted in the laboratory to preliminarily assess the load-bearing performance of the hanging points. Then, actual loading tests were conducted on selected typical hanging points at the construction site to simulate the most unfavorable load conditions. During the tests, the deformation and displacement of the hanging points, as well as the overall stability of the steel structure, were closely monitored. Based on the test results, the hanging point design was finely adjusted and improved to ensure that it could still meet the engineering safety requirements under complex terrain and harsh environmental conditions. In actual construction, this hanging point scheme effectively ensured construction safety. Although the project was challenging, the construction progress was not significantly affected, and the expected construction results were achieved.

[0026] 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 within the protection scope of the present invention.

Claims

1. A research method for high-altitude hanging points in steel structure substation engineering, characterized in that, Includes the following steps: S1 Data Acquisition and Analysis: Obtain design drawings of steel structure substations, construct 3D models, and monitor environmental parameters at the construction site in real time, including wind speed, temperature, and terrain conditions; S2 Mechanical Model Establishment: Based on the aforementioned three-dimensional model and mechanical principles, a finite element analysis model of the steel structure is established to simulate the stress distribution under the conditions of construction equipment hoisting and personnel operation, and to identify high-stress areas; S3 Hanging Point Optimization Design: Adjust the hanging point position according to the distribution of high stress areas and construction process requirements, evaluate stress distribution and deformation through comparison of multiple schemes, and select the optimal hanging point setting scheme; S4 Bearing Capacity Verification: Loading tests are conducted on selected hanging points to verify their bearing capacity and deformation under design loads, and the hanging point design is revised based on the test results.

2. The research method according to claim 1, characterized in that, In step (S1), the three-dimensional model is constructed using BIM software and integrates material properties, component dimensions, and connection node information.

3. The research method according to claim 1, characterized in that, In step (S2), the finite element analysis model is implemented using ANSYS or ABAQUS software, and the simulated working conditions include static load, dynamic wind load, and temperature stress coupling analysis.

4. The research method according to claim 1, characterized in that, In step (S3), the hanging point optimization design includes the following sub-steps: (a) Determine the preliminary location of the hanging point based on the hanging method and movement path of the construction equipment; (b) Calculate the stress concentration factor and deformation of the steel structure under different hanging point schemes using finite element analysis; (c) Combining safety thresholds and economic indicators, select the scheme with uniform stress distribution and optimal cost.

5. The research method according to claim 1, characterized in that, In step (S4), the loading test includes a physical loading test and a numerical simulation loading test. The physical loading test uses a hydraulic jack to load the load step by step, while the numerical simulation loading test uses finite element software to reproduce the actual load conditions.

6. The research method according to any one of claims 1-5, characterized in that, It also includes step (S5): marking the optimized hanging point positions on the 3D model, generating construction guidance documents to guide the hanging position of safety belts and the hoisting path of equipment in high-altitude operations.

7. A high-altitude hanging point installation system for a steel structure substation, characterized in that, include: The data acquisition module is used to acquire design drawings and environmental parameters to build a 3D model; The mechanical analysis module uses finite element analysis software to build a mechanical model and simulate the force distribution. The optimization design module generates optimized hanging point schemes based on the mechanical analysis results and construction process requirements. The verification module verifies the load-bearing capacity of the hanging points through loading tests; The output module generates construction guidance documents for the hanging point locations.

8. The system according to claim 7, characterized in that, The optimization design module integrates a multi-objective optimization algorithm, which automatically outputs the optimal hanging point scheme under the constraints of stress uniformity, construction cost and safety.

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