A temperature effect calculation method, device, apparatus and storage medium

Abstract

The application discloses a temperature effect calculation method, device and equipment and a storage medium, and relates to the technical field of power transformation. t The temperature effect calculation method comprises the following steps: obtaining relevant parameters of a power transformation framework; calculating total temperature deformation Δ according to single-span beam length l, span number n, steel material linear expansion coefficient α and design temperature Δ v ; calculating loosening deformation Δs according to beam-column connecting bolt diameter d, beam-column connecting bolt diameter d0 and vertical force F s at a pin under unit force action; calculating effective design temperature difference Δt according to total temperature deformation Δ, loosening deformation Δs, single-span beam length l, span number n and steel material linear expansion coefficient α e , and outputting the effective design temperature difference Δt e ; in the temperature effect calculation method, the influence of loosening deformation Δs on the temperature effect is considered, the effective design temperature difference Δt e calculated in the actual application scenario is input into software, the error of the obtained internal force compared with the actually measured internal force is greatly reduced, and effective data support can be provided for the design of power transformation components.

Description

Technical Field

[0001] This invention relates to the field of power construction structure technology, and in particular to a method, apparatus, equipment and storage medium for calculating temperature effects. Background Technology

[0002] In recent years, with the continuous expansion of power construction scale, the continuous improvement of power industry technology and the continuous enhancement of technical personnel's professional level, large-scale 500kV substations have been gradually promoted and applied. The substation structure of 110kV and 220kV substations is no longer simple. 220kV structural longitudinal beams with a length of more than 150m and 500kV combined structural beams with a length of more than 200m have gradually appeared.

[0003] Temperature effect refers to the effect produced by a structure or component under external or internal constraints when the external temperature changes, which cannot be solely due to expansion and contraction. Temperature effect is a crucial component of substation structures, and according to existing regulations and standards, it must be considered during structure calculations. Currently, STAAD.Pro V8i software is commonly used for calculating and analyzing substation structures. However, the temperature effect calculated by this software has a significant error compared to the actual measured temperature effect. For example, in a 500kV substation project, the total length of the longitudinal beams of the 500kV combined structure is 196m. Current calculation methods estimate that the temperature effect accounts for more than 20% of the total effect for the end supports at both ends of the structure. However, based on engineering experience and relevant literature, this calculated value is too high. In actual engineering projects, for structures with a total length of approximately 200 meters, the proportion of the temperature effect is generally around 10%. This means that the temperature effect obtained by the software is too high and inaccurate, resulting in low accuracy of the combined internal forces derived by the software, and failing to provide effective data support for the design of structure sections, connections, and foundations.

[0004] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a method for calculating temperature effects, which can reduce the error between the internal forces calculated by software and the measured internal forces, and provide effective data support for the design of structural interfaces, connections and foundations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of this invention provides a method for calculating temperature effects, comprising: acquiring relevant parameters of a substation structure, wherein the relevant parameters include the length l of a single-span beam, the number of spans n, the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. The coefficient of linear expansion α of steel and the design temperature Based on the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature Calculate the total temperature deformation Δ; based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation The effective design temperature difference is calculated based on the total temperature deformation Δ, loosening deformation Δs, single-span beam length l, number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

[0008] Optionally, in a first implementation of the first aspect of the present invention, the step of determining the single-span beam length l, the number of spans n, the coefficient of linear expansion of the steel α, and the design temperature... The calculation of total temperature deformation Δ specifically includes: calculating the length of the temperature zone based on the single-span beam length l and the number of spans n. Based on the length of the temperature range The coefficient of linear expansion α of steel and the design temperature Calculate the total temperature deformation Δ.

[0009] Optionally, in a second implementation of the first aspect of the invention, the step of basing the beam length l, the number of spans n, the coefficient of linear expansion of the steel α, and the design temperature on the single span beam length l, the number of spans n, and the design temperature is... The total temperature deformation Δ is calculated as follows:

[0010] ;

[0011] .

[0012] Optionally, in a third implementation of the first aspect of the present invention, the method of basing the beam-column connection bolt diameter d, the beam-column connection bolt hole diameter d0, and the vertical force at the pin under unit force is... Calculate loosening deformation Specifically, this includes: calculating the loosening deformation of the connecting bolts based on the diameter d of the beam-column connecting bolts and the diameter d0 of the beam-column connecting bolt holes. Based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force... Calculate the loosening and deformation of the connecting pin Based on the loosening and deformation of the connecting bolts and loose or deformed connecting pins Calculate loosening deformation .

[0013] Optionally, in the fourth implementation of the first aspect of the present invention, the method of basing the beam-column connection bolt diameter d, the beam-column connection bolt hole diameter d0, and the vertical force at the pin under unit force is... Calculate loosening deformation Specifically:

[0014] = + ;

[0015] ;

[0016] ;

[0017] Where m is the number of beam-column connections within the temperature zone, m = 2n / 2; For bolt hole clearance, for substation structures of 220kV and below, take [value missing]. =2mm, for a 500kV substation structure, take =3mm.

[0018] Optionally, in a fifth implementation of the first aspect of the present invention, the step of determining the total temperature deformation Δ and the loosening deformation... Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. Specifically:

[0019] .

[0020] Optionally, in a sixth implementation of the first aspect of the present invention, after obtaining the relevant parameters of the substation structure, the method further includes the step of: determining the obtained design temperature. Check if it matches the preset temperature value; if not, output an alarm command.

[0021] A second aspect of the present invention provides a temperature effect calculation device, comprising: an acquisition module for acquiring relevant parameters of a substation structure; and a first calculation module for calculating parameters based on the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature. The total temperature deformation Δ is calculated; the second calculation module is used to calculate the total temperature deformation Δ based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation The third calculation module is used to calculate the total temperature deformation Δ and the loosening deformation. Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

[0022] Optionally, in a first embodiment provided by the second aspect of the present invention, the first calculation module includes a first calculation unit for calculating the length of the temperature zone based on the single-span beam length l and the number of spans n. The second calculation unit calculates based on the length of the temperature range. The coefficient of linear expansion α of steel and the design temperature Calculate the total temperature deformation Δ.

[0023] Optionally, in a second embodiment provided in the third aspect of the present invention, the second calculation module includes a third calculation unit for calculating the loosening deformation of the connecting bolts based on the diameter d of the beam-column connecting bolts and the diameter d0 of the beam-column connecting bolt holes. The fourth calculation unit is used to calculate the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate the loosening and deformation of the connecting pin The fifth calculation unit is used to calculate based on the loosening and deformation of the connecting bolts. and loose or deformed connecting pins Calculate loosening deformation .

[0024] A third aspect of the present invention provides a temperature effect calculation device, the temperature effect calculation device comprising: a memory and at least one processor, wherein the memory stores instructions;

[0025] At least one of the processors invokes the instructions in the memory to cause the temperature effect calculation device to perform the steps of the temperature effect calculation method as described in any of the preceding claims.

[0026] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed by a processor, implement the steps of the temperature effect calculation method as described in any of the preceding claims.

[0027] Beneficial effects:

[0028] This invention provides a method for calculating temperature effects based on loosening deformation. Calculate the effective design temperature That is, loosening and deformation were taken into account. The impact on temperature effects; in practical applications, the effective design temperature difference calculated using the method disclosed in this application will be considered. When input into the STAAD.Pro V8i software, the error of the internal force obtained is greatly reduced compared with the internal force measured on site. This improves the accuracy of the temperature effect and internal force calculated by the software, and can provide effective data support for the design of the framework interface, connection and foundation. Attached Figure Description

[0029] Figure 1 This is a first flowchart of the temperature effect calculation method provided by the present invention;

[0030] Figure 2This is a second flowchart of the temperature effect calculation method provided by the present invention;

[0031] Figure 3 This is a third flowchart of the temperature effect calculation method provided by the present invention;

[0032] Figure 4 This is a schematic diagram of a temperature effect calculation device provided in an embodiment of the present invention;

[0033] Figure 5 This is another schematic diagram of the temperature effect calculation device provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the temperature effect calculation device provided by the present invention.

[0035] Explanation of key component symbols: 401 - Acquisition module, 402 - First calculation module, 4021 - First calculation unit, 4022 - Second calculation unit, 403 - Second calculation module, 4031 - Third calculation unit, 4032 - Fourth calculation unit, 4033 - Fifth calculation unit, 404 - Third calculation module. Detailed Implementation

[0036] This invention provides a method, apparatus, device, and storage medium for calculating temperature effects. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0037] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] The impact of structural measures on temperature effects is mainly manifested in the loosening and deformation of the frame connections. Currently, the beam-column connections and the connections between edge columns and end braces of the frame are all hinged. When temperature deformation occurs, the connections will loosen and deform, leading to the release of temperature effects. Therefore, loosening deformation should be considered when calculating temperature effects. Temperature deformation refers to the expansion and contraction of a structure or component due to changes in external temperature. Loosening deformation refers to the part of a structure or component that can expand and contract freely during temperature deformation and does not produce a temperature effect.

[0039] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the temperature effect calculation method in this invention includes:

[0040] 101. Obtain relevant parameters of the substation structure, including the length l of a single span beam, the number of spans n, the diameter d of the beam-column connection bolts, the diameter d0 of the beam-column connection bolt holes, and the vertical force at the pin under unit force. The coefficient of linear expansion α of steel and the design temperature In one embodiment, the relevant parameters also include the total length L of the beam; each relevant parameter is input by the user according to actual engineering requirements or based on on-site measured data.

[0041] 102. Based on the single-span beam length l, the number of spans n, the coefficient of linear expansion of the steel α, and the design temperature... Calculate the total temperature deformation Δ; based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation ;

[0042] 103. Based on the total temperature deformation Δ and loosening deformation Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

[0043] In the temperature effect calculation method disclosed in this application, based on loosening deformation Calculate the effective design temperature That is, loosening and deformation were taken into account. The impact on temperature effects; in practical applications, the effective design temperature difference calculated using the method disclosed in this application will be considered. The data is imported into STAAD.Pro V8i software. The corresponding architecture is then modeled in STAAD.Pro V8i software, and the effective design temperature difference is considered. Temperature loads are defined to calculate temperature effects, thereby obtaining the internal force F (axial force) at the end support of the frame corresponding to the field test. The error of the obtained internal force F is greatly reduced compared with the internal force measured in the actual field, which improves the accuracy of the temperature effect and internal force calculated by the software. It can provide effective data support for the design of frame interfaces, connections and foundations.

[0044] Please see Figure 2 The second embodiment of the temperature effect calculation method in this invention includes:

[0045] 201. Calculate the length of the temperature zone based on the single-span beam length l and the number of spans n. The length of the temperature range This refers to the distance from the fixed point (i.e., the point that does not shift due to temperature deformation) to the point being calculated when performing temperature effect calculations. Taking the most common type of frame structure with end supports at both ends as an example: because the frame structure is symmetrical, the fixed point for temperature deformation must be at the midpoint of the frame. Therefore, the length of the temperature zone... for:

[0046] ;

[0047] In this embodiment, the span length l and the number of spans n are filled in by the designer according to the actual situation of the project.

[0048] S202, Based on the length of the temperature zone The coefficient of linear expansion α of steel and the design temperature Calculate the total temperature deformation Δ; specifically,

[0049] ;

[0050] The coefficient of linear expansion α of the steel is a constant, specifically α = 0.000012; the design temperature According to the specifications, after obtaining the relevant parameters of the substation structure, the process further includes the step of determining the obtained design temperature. If the temperature does not match the preset temperature value, an alarm command is output. In this embodiment, the preset temperature value includes two values: one is 35°C and the other is -35°C, which is the input design temperature. The input design temperature is compared with two preset temperature values ​​respectively. If the temperature does not match either of the two preset temperature values, an alarm command is output. The alarm command can be a pop-up window displaying a preset alarm message, which can be "Design Temperature". It should be 35℃ or -35℃.

[0051] According to the "Design Manual for High Voltage Transmission Lines in Power Engineering", when the poles are connected by bolts, the bolt hole diameter d0 is generally 1.5~2.0mm larger than the bolt diameter d. When the poles undergo temperature deformation, they will loosen and deform.

[0052] Please see Figure 2 The third embodiment of the temperature effect calculation method in this invention includes:

[0053] 301. Calculate the loosening deformation of the connecting bolts based on the diameter d of the beam-column connecting bolts and the diameter d0 of the bolt holes. Currently, beam-column connections in substation structures are generally made using bolts. This refers to the loosening deformation of the beam-column connecting bolts within the temperature zone of the frame. Since this loosening deformation is a free deformation, it does not produce a temperature effect and will not be transmitted to the frame beams near the end of the temperature zone. Therefore, when calculating the temperature effect, it should be deducted from the total temperature deformation generated by the frame beams. Size and bolt hole gap ( =d0-d) is related to the fact that, assuming the bolts and bolt hole centers are in the ideal center position during component installation, after the members undergo elongation or shortening deformation due to temperature changes, the bolts will press against the bolt hole wall outwards or inwards. At this time, the loosening deformation at each beam-column connection is This means that the loosening and deformation of the beam-column connection bolts will occur throughout the entire temperature range. for:

[0054] ;

[0055] Where m is the number of beam-column connections within the temperature zone, m = 2n / 2; For bolt hole clearance, for substation structures of 220kV and below, take [value missing]. =2mm, for a 500kV substation structure, take =3mm.

[0056] 302. Based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force... Calculate the loosening and deformation of the connecting pin For truss frames with end braces, the side posts and end braces are generally connected by hinges, and the connecting component is a pin; the diameter of the pin hole is generally larger than the diameter of the pin. When the structural beam undergoes temperature deformation, generating horizontal internal forces at the top of the side column, similar to the temperature-induced loosening deformation of the bolt holes, the pins will experience approximately vertical loosening deformation. If the pin is generated in the vertical direction The displacement of the column top along the horizontal direction will be... Calculate according to the formula described later: It can be seen that the approximately vertical loosening deformation caused by the pin will, in turn, cause horizontal loosening deformation at the top of the side column. This horizontal loosening deformation is a release deformation from temperature deformation and does not produce a temperature effect; therefore, it should be deducted from the total temperature deformation generated by the frame beam. Generally, there is only one end brace within the temperature zone of the frame beam, so the aforementioned horizontal loosening deformation is the loosening deformation of the connecting pin between the side column and the end brace. Therefore, we have:

[0057] ;

[0058] In this embodiment, based on structural mechanics knowledge, the vertical force at the pin under a unit horizontal force at the top of the column can be obtained using the graphical method. =3.82kN / kN.

[0059] 303. Based on the loosening and deformation of the connecting bolts and loose or deformed connecting pins Calculate loosening deformation Based on the actual situation of the structure, the loosening and deformation of its connection parts It consists of two parts: (i) loosening and deformation of bolt holes at beam-column connection points. (ii) Loose or deformed pin holes at the connection between the end brace and the side column. ;Right now

[0060] = + .

[0061] Furthermore, the total temperature deformation Δ and loosening deformation are... Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. Specifically:

[0062] ;

[0063] In this embodiment, the effective design temperature difference is calculated based on the principle of virtual work in structural mechanics. Then, the effective design temperature difference Input into the software to obtain the effective temperature effect The software internally calculates load effects, including temperature effects, by defining load effect combinations. The combined internal force F.

[0064] Please refer to Table 1 for the effective design temperature obtained using the calculation method disclosed in this application. The data was input into the STAAD.Pro V8i software. The software internally uses the principle of virtual work in structural mechanics to calculate the temperature effect caused by temperature deformation of the frame. Then, it calculates the combined internal force F, which includes the temperature effect, by defining load effect combinations. In field tests, the strain at the end support column base of the frame was measured at various temperatures under the same external conditions (wind speed, conductor load, equipment self-weight). This yielded the strain at the measured location under different temperature differences, and subsequently the stress caused by temperature changes at the measured location under different temperature differences. Finally, the internal force Fs (axial force) at the test location was calculated using mechanics of materials. The comparison between the calculated internal force values ​​and the measured internal force values ​​is as follows:

[0065]

[0066] Table 1 Input Comparison table of calculated values ​​and measured internal force values ​​(220kV substation)

[0067] Without considering loosening and deformation Previously, the internal force calculated using STAAD.Pro V8i software had an error as high as 90%-1110%. However, as shown in Table 1, the temperature effect calculation method disclosed in this application quantifies the loosening deformation of all connection parts, deducts it from the total temperature deformation, and calculates the result based on the deduction. ,Will The error between the internal force values ​​calculated by inputting into STAAD.Pro V8i software and the measured internal force values ​​is reduced to within 10%, which improves the accuracy of temperature effects and internal forces calculated by the software and can provide effective data support for the design of framework interfaces, connections and foundations.

[0068] The temperature effect calculation method in the embodiments of the present invention has been described above. The temperature effect calculation device in the embodiments of the present invention will be described below. Please refer to [link / reference]. Figure 4 One embodiment of the temperature effect calculation device in this invention includes:

[0069] Module 401 is used to acquire relevant parameters of the substation structure;

[0070] The first calculation module 402 is used to calculate the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature. Calculate the total temperature deformation Δ;

[0071] The second calculation module 403 is used to calculate the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation ;

[0072] The third calculation module 404 is used to calculate the total temperature deformation Δ and the loosening deformation. Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

[0073] Please see Figure 5 Another embodiment of the temperature effect calculation device in this example includes:

[0074] The first calculation module 402 is used to calculate the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature. Calculate the total temperature deformation Δ;

[0075] The second calculation module 403 is used to calculate the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation ;

[0076] The third calculation module 404 is used to calculate the total temperature deformation Δ and the loosening deformation. Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference ;

[0077] In this embodiment, the first calculation module includes: a first calculation unit 4021, used to calculate the length of the temperature zone based on the single-span beam length l and the number of spans n. The second calculation unit 4022 calculates the temperature range length. The coefficient of linear expansion α of steel and the design temperature Calculate the total temperature deformation Δ.

[0078] In this embodiment, the second calculation module includes a third calculation unit 4031, used to calculate the loosening deformation of the connecting bolts based on the diameter d of the beam-column connecting bolts and the diameter d0 of the beam-column connecting bolt holes. The fourth calculation unit 4032 is used to calculate the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate the loosening and deformation of the connecting pin The fifth calculation unit 4033 is used to calculate based on the loosening and deformation of the connecting bolts. and loose or deformed connecting pins Calculate loosening deformation .

[0079] above Figure 4 and Figure 5The temperature effect calculation device in the embodiments of the present invention will be described in detail from the perspective of modular functional entities. The temperature effect calculation device in the embodiments of the present invention will be described in detail from the perspective of hardware processing.

[0080] Figure 6 This is a schematic diagram of a temperature effect calculation device 500 provided in an embodiment of the present invention. The temperature effect calculation device 500 varies considerably depending on its configuration or performance, and may include one or more central processing units (CPUs) 510 (e.g., one or more processors) and a memory 520, and one or more storage media 530 (e.g., one or more mass storage devices) for storing application programs 533 or data 532. The memory 520 and storage media 530 can be temporary or persistent storage. The program stored in the storage media 530 may include one or more modules (not shown in the diagram), each module including a series of instruction operations on the temperature effect calculation device 500. Furthermore, the processor 510 may be configured to communicate with the storage media 530 and execute the series of instruction operations in the storage media 530 on the temperature effect calculation device 500 to implement the steps of the temperature effect calculation method provided in the above-described method embodiments.

[0081] The temperature effect calculation device 500 may also include one or more power supplies 540, one or more wired or wireless network interfaces 550, one or more input / output interfaces 560, and / or one or more operating systems 531, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will understand that... Figure 6 The illustrated temperature effect computing device structure does not constitute a limitation on temperature effect-based computing devices, and may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0082] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium, wherein the computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the steps of a temperature effect calculation method.

[0083] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system, device, or unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0084] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A method for calculating temperature effects, characterized in that, include: Obtain relevant parameters of the substation structure, including the length l of a single span beam, the number of spans n, the diameter d of the beam-column connection bolts, the diameter d0 of the beam-column connection bolt holes, and the vertical force at the pin under unit force. The coefficient of linear expansion α of steel and the design temperature ; Based on the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature Calculate the total temperature deformation Δ; Based on the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force... Calculate loosening deformation ; Specifically, the loosening deformation of the connecting bolts is calculated based on the diameter d of the beam-column connecting bolts and the diameter d0 of the beam-column connecting bolt holes. According to the vertical force at the pin under unit force Calculate the loosening and deformation of the connecting pin Based on the loosening and deformation of the connecting bolts and loose or deformed connecting pins Calculate loosening deformation Specifically: = + ； ； ； Where m is the number of beam-column connections within the temperature zone, m = 2n / 2; For bolt hole clearance, = d0 - d, for substation structures of 220kV and below, take =2mm, for a 500kV substation structure, take =3mm; This indicates the loosening deformation at each beam-column connection; assuming the pin hole diameter is larger than the pin diameter. When the structural beam undergoes temperature deformation, generating horizontal internal forces at the top of the edge column, the pins will loosen and deform vertically. Vertical loosening and deformation Conversely, this will cause horizontal loosening and deformation at the top of the side column. If there is only one end brace in the temperature zone of the frame beam, horizontal loosening and deformation will occur. The connecting pins between the side column and the end brace were loose and deformed. ; It is a free deformation, which does not produce a temperature effect and will not be transmitted to the frame beams near the end of the temperature zone. Therefore, when calculating the temperature effect, it should be deducted from the total temperature deformation of the frame beams. To release the deformation caused by temperature and prevent the generation of temperature effects, it should be deducted from the total temperature deformation generated by the frame beam; Based on total temperature deformation Δ and loosening deformation Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

2. The method for calculating temperature effect according to claim 1, characterized in that, The parameters are: beam length l, number of spans n, coefficient of linear expansion α of steel, and design temperature. The calculation of total temperature deformation Δ includes: Calculate the length of the temperature zone based on the length l of a single span beam and the number of spans n. ; Based on the length of the temperature zone The coefficient of linear expansion α of steel and the design temperature Calculate the total temperature deformation Δ.

3. The method for calculating temperature effect according to claim 2, characterized in that, The parameters are: beam length l, number of spans n, coefficient of linear expansion α of steel, and design temperature. The total temperature deformation Δ is calculated as follows: ； 。 4. The method for calculating temperature effect according to claim 2, characterized in that, The total temperature deformation Δ and loosening deformation are mentioned. Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. Specifically: 。 5. The method for calculating temperature effect according to claim 1, characterized in that, After obtaining the relevant parameters of the substation structure, the following steps are also included: Determine the obtained design temperature Check if it matches the preset temperature value; if not, output an alarm command.

6. A temperature effect calculation device, characterized in that, include: The acquisition module is used to acquire relevant parameters of the substation structure, including the single-span beam length l, the number of spans n, the diameter d of the beam-column connection bolts, the diameter d0 of the beam-column connection bolt holes, and the vertical force at the pin under unit force. The coefficient of linear expansion α of steel and the design temperature ; The first calculation module is used to calculate the single-span beam length l, the number of spans n, the coefficient of linear expansion of steel α, and the design temperature. Calculate the total temperature deformation Δ; The second calculation module is used to calculate the diameter d of the beam-column connection bolt, the diameter d0 of the beam-column connection bolt hole, and the vertical force at the pin under unit force. Calculate loosening deformation Specifically, the loosening deformation of the connecting bolts is calculated based on the diameter d of the beam-column connecting bolts and the diameter d0 of the beam-column connecting bolt holes. According to the vertical force at the pin under unit force Calculate the loosening and deformation of the connecting pin Based on the loosening and deformation of the connecting bolts and loose or deformed connecting pins Calculate loosening deformation Specifically: = + ； ； ； Where m is the number of beam-column connections within the temperature zone, m = 2n / 2; For bolt hole clearance, = d0 - d, for substation structures of 220kV and below, take =2mm, for a 500kV substation structure, take =3mm; This indicates the loosening deformation at each beam-column connection; assuming the pin hole diameter is larger than the pin diameter. When the structural beam undergoes temperature deformation, generating horizontal internal forces at the top of the edge column, the pins will loosen and deform vertically. Vertical loosening and deformation Conversely, this will cause horizontal loosening and deformation at the top of the side column. If there is only one end brace in the temperature zone of the frame beam, horizontal loosening and deformation will occur. The connecting pins between the side column and the end brace were loose and deformed. ; It is a free deformation, which does not produce a temperature effect and will not be transmitted to the frame beams near the end of the temperature zone. Therefore, when calculating the temperature effect, it should be deducted from the total temperature deformation of the frame beams. To release the deformation caused by temperature and prevent the generation of temperature effects, it should be deducted from the total temperature deformation generated by the frame beam; The third calculation module is used to calculate the total temperature deformation Δ and the loosening deformation. Calculate the effective design temperature difference based on the single-span beam length l, the number of spans n, and the linear expansion coefficient α of the steel. and output the effective design temperature difference .

7. A temperature effect calculation device, characterized in that, The temperature effect calculation device includes: a memory and at least one processor, wherein the memory stores instructions; At least one of the processors invokes the instructions in the memory to cause the temperature effect calculation device to perform the steps of the temperature effect calculation method as described in any one of claims 1-5.

8. A computer-readable storage medium storing instructions thereon, characterized in that, When the instructions are executed by the processor, they implement the various steps of the temperature effect calculation method as described in any one of claims 1-5.

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