Method for enabling awning to pass through high-voltage wiring harness

Abstract

The invention relates to the technical field of subway construction, in particular to a method for enabling an awning to pass through a high-voltage wiring harness, which comprises the following steps: S1, carrying out soil descending construction: S11, constructing a foundation pit fender post; s12, a fender post top crown beam, a foundation pit inner support and a foundation pit retaining wall are constructed; s13, a foundation pit is excavated, and supporting between foundation pit piles is carried out; a base cushion layer is constructed, and soil descending construction is completed; and S2, an awning is installed in the foundation pit constructed in the step S1, and the distance between the top of the awning and the ground is 5700-6000 mm. According to the method for enabling the awning to penetrate through the high-voltage wiring harness, through soil descending construction, the awning is installed in the foundation pit, and the height from the top of the awning to the ground is controlled to be 5700-6000 mm, the height, located above the ground, of the awning is effectively reduced, and on the premise that the complete function of the awning is reserved, a safe distance is kept between the awning and the high-voltage wiring harness; and the safety risk and the construction cost in the construction process are obviously reduced.

Description

Technical Field

[0001] The invention relates to the technical field of subway construction, in particular to a method for a canopy to pass through a high-voltage wire harness. Background Art

[0002] During the construction of underground subways in urban rail transit, the construction canopy is a temporary structure used in underground space construction. It is mainly used to protect the construction area, prevent the impact of the external environment on the construction, and ensure the safety of construction workers.

[0003] Traditional canopies are simply hoisted to the shaft entrance using lifting equipment for installation. However, when the construction area crosses existing high-voltage power lines, these overhead lines can interfere with the canopy's installation. "DL5009.2 Safety Work Regulations for Electric Power Construction" stipulates minimum safe distances between overhead work and live parts: the minimum distance for 220V high-voltage lines must be no less than 5 meters. "JGJ46 Technical Specifications for Temporary Power Safety at Construction Sites" requires a minimum vertical and horizontal distance of no less than 6 meters between cranes and overhead power line edges. In such cases, hoisting a canopy directly within the construction area would not meet safety regulations. Conventional approaches involve relocating the overhead high-voltage lines or adjusting the canopy's position. However, relocating high-voltage lines often incurs significant costs and can take months or even more than six months, significantly increasing construction costs and delaying the project schedule. Furthermore, in some projects, the canopy's location can be difficult to adjust due to factors such as land acquisition. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings that when a canopy passes through a high-voltage wire harness during subway construction, the position of the canopy is difficult to adjust, and relocating the high-voltage wire harness will greatly increase construction costs and slow down the construction period, and provide a method for a canopy to pass through a high-voltage wire harness.

[0005] In a first aspect, the present invention provides a method for passing a high-voltage wire harness through a canopy, comprising the following steps: S1. Carry out soil lowering construction, including the following steps: S11. Construction of foundation pit retaining piles; S12. Construction of retaining pile cap beams, foundation pit supports, and foundation pit retaining walls; S13. Excavate the foundation pit and provide support between the foundation pit piles. The foundation pit excavation is divided into the vertical shaft area and the earth warehouse area. Excavate the first earthwork layer from the shaft area to the earthwork area. The depth of the first earthwork layer shall not exceed 3m, and the length of the first earthwork layer shall not exceed 20m. The first earthwork layer shall be constructed in the earthwork area with a first slope, and the slope coefficient of the first slope shall be 1:1.73; Excavate the second earthwork layer from the shaft area to the earth bunker area. The depth of the second earthwork layer in the shaft area is the difference between the bottom elevation of the first earthwork layer and the bottom elevation of the shaft lock ring beam. Construct the first step in the shaft area with a height of 800±30mm. The depth of the second earthwork layer in the earth bunker area is the difference between the bottom elevation of the first earthwork layer and the bottom elevation of the earth bunker. Construct the second slope from the second earthwork layer to the 1 / 2 position of the earth bunker area with a slope coefficient of 1:1.73. Construct the second step in the earth bunker area with a height of 2000±50mm. Excavate the third earthwork layer. The third earthwork layer covers the remaining soil to be excavated in the earth warehouse area. The third earthwork layer is constructed with a third slope. The slope coefficient of the third slope is 1:1.73. The foundation pit excavation is completed. Construct the base cushion and complete the soil lowering construction; S2. Install a canopy in the foundation pit constructed in S1, with the top of the canopy 5700mm~6000mm above the ground.

[0006] The method for a canopy to pass through a high-voltage wire harness provided by the present invention is to install the canopy in a foundation pit through soil lowering construction, and the height of the canopy top from the ground is controlled to be 5700mm to 6000mm, which effectively reduces the height of the canopy above the ground. Under the premise of retaining the complete function of the canopy, the canopy and the high-voltage wire harness are kept at a safe distance, avoiding direct contact or proximity between the canopy and the high-voltage wire harness during the canopy hoisting process, eliminating the interference of the high-voltage wire harness on the canopy erection, meeting the requirements of relevant safety regulations, significantly reducing the safety risks during the construction process, and ensuring the safety of construction personnel and equipment; the method for a canopy to pass through a high-voltage wire harness does not require the relocation of the high-voltage wire harness or the canopy position, and the construction cost is greatly reduced; The method provided by the present invention for a canopy to pass through a high-voltage wire harness divides the foundation pit into a vertical shaft area and a soil bin area during foundation pit excavation. Traditional ground soil bins have many problems, such as occupying construction area, being inconvenient for earthwork transportation, and increasing construction costs. The present invention excavates the underground soil bin during soil lowering construction, thereby improving site utilization. The soil bin area and the vertical shaft area are excavated together, and the soil in the vertical shaft can be quickly transferred to the soil bin and then quickly transported out by a dump truck, thereby simplifying the soil transportation process. No additional ground soil bin is required, thereby reducing construction costs. When excavating the foundation pit, the excavation sequence of the foundation pit is optimized. The first earthwork layer is excavated first. By controlling the depth and length of the first earthwork layer, large-scale deep excavation at one time is avoided, the risk of soil collapse is reduced, and the first slope is constructed to facilitate soil transportation; when excavating the second earthwork layer, its depth in the shaft area takes into account the subsequent erection of the shaft lock ring beam, which is convenient for subsequent shaft excavation construction. A stable platform is formed by constructing the first step and the second step, which enhances the stability of the foundation pit excavation. The second slope is constructed to facilitate soil transportation, and the second earthwork layer is excavated to the 1 / 2 position of the soil bin area, which reduces the risk of soil collapse. This foundation pit excavation sequence provides a stable foundation for the subsequent installation of the canopy, which is convenient for the subsequent canopy installation.

[0007] Preferably, in S11, the retaining piles are constructed by drilling every three piles, and the construction interval between adjacent retaining piles is not less than 24 hours.

[0008] Retaining piles are typically constructed using bored cast-in-place construction. Continuous drilling can disturb the soil between adjacent pile holes, leading to hole wall collapse or pile hole deviation. A skipped drilling method increases the distance between adjacent piles (by at least three piles), minimizing disturbance of the surrounding soil during construction and the risk of hole wall collapse, thereby ensuring pile verticality and quality. Concrete requires time to solidify after pouring to reach its design strength. A minimum of 24 hours is designed between adjacent retaining piles to allow sufficient initial setting time for the concrete of the previous pile. This prevents quality defects such as segregation, honeycombing, or insufficient strength in the newly poured concrete caused by vibration from adjacent piles.

[0009] Preferably, S11 includes the following steps: S111. Construction Preparation: Before retaining pile construction, conduct exploratory trenching. Excavate down to the original soil to identify pipelines and relocate any pipelines that may affect construction outside the construction area. S112. Construction Measurement: The retaining piles are positioned 50 ± 5 mm outward. Stakeout is performed. After the center point of each retaining pile is marked and fixed, the center point is controlled. The longitudinal tolerance is ± 100 mm, and the lateral tolerance is 0-50 mm. S113. Drilling: When the drilling rig is in place, the drill rod must be aligned vertically with the center of the retaining pile. The verticality deviation of the retaining pile should not exceed 1%. Drilling: During the drilling process, slowly lower and lift the drill rod, start slowly and then speed up, and at the same time check the verticality deviation of the drill hole and correct it in time; Hole cleaning: When the hole depth reaches the designed depth, the soil should be cleaned at the bottom of the hole in an idling manner. The hole cleaning time should be no less than 10 minutes. S114. Hoisting the rebar cage: After the cage is vertical, check its verticality. After the cage frame enters the hole, straighten the cage and lower it to prevent it from swinging and colliding with the hole wall. S115. Concrete pouring: After the steel cage is placed, concrete pouring is carried out, and the concrete on the top of the retaining pile should be over-poured by 5 to 10 cm.

[0010] Before the construction of retaining piles, exploratory trench excavation is first carried out to determine the location and direction of underground pipelines to avoid accidental damage to pipelines during construction, reduce safety hazards and maintenance costs; precise layout and error control are carried out through construction measurement to ensure that the position of retaining piles meets the design requirements, and to avoid failure of the retaining structure or instability of the foundation pit due to deviation; during drilling construction, the alignment and verticality of the drill rod are strictly controlled to ensure the verticality of the retaining piles and avoid structural failure caused by tilting; the drill rod is lowered and raised slowly to reduce the risk of hole wall collapse and improve the quality of the hole, and the drilling is slow at first and then fast to avoid unstable hole walls or stuck drills caused by drilling too fast; after the hole reaches the designed depth, the hole is cleaned to effectively clean impurities at the bottom of the hole and ensure the bearing capacity and stability of the pile bottom; the steel cage is hoisted in the borehole to ensure that the steel cage is correctly positioned in the hole to avoid deviation affecting the quality of the pile body; concrete is poured after the steel cage is placed, and over-pouring can ensure that there are no voids or looseness on the top of the pile, thereby improving the quality of the pile.

[0011] Preferably, S12 includes the following steps: S121. Excavation of surface soil: After the retaining pile concrete reaches the design strength, excavate the surface soil to 10 cm to 30 cm above the top beam and inner support bottom elevation; S122. Pile head roughening: After excavating to the bottom elevation of the crown beam, remove the inferior concrete at the top of the retaining pile to the top elevation of the retaining pile; S123. Tie Rebar: Rebar joints within the same member and at the same interface must be staggered with a spacing of 35d and not less than 500mm. The area of ​​the stressed reinforcement in the joints within the same section must not exceed 50% of the total reinforcement area within the entire cross-section. Stirrups must be securely tied to the longitudinal reinforcement with tying wire. S124. Install crown beam formwork and internal support formwork; S125. Concrete construction: The crown beam, internal support and retaining wall are all cast with C30 commercial concrete. The concrete is cast and vibrated in layers. The moving distance of the vibrating rod during vibration shall not exceed 1.5 times the effective radius of the vibrating rod. A distance of 5 to 10 cm shall be maintained between the vibrating rod and the formwork.

[0012] Excavate the topsoil only after the concrete of the retaining piles reaches the designed strength to avoid construction disturbances that could affect the integrity of the piles and ensure structural safety. A margin of 10 to 30 cm should be left to provide ample space for subsequent processes such as steel bar binding and formwork installation, while also protecting the pile heads from damage. After excavating to the bottom elevation of the crown beam, remove the inferior concrete affected by bleeding or laitance to expose the fresh, solid concrete surface, ensure the firm connection between the crown beam and the retaining piles, improve the overall structural strength, and provide a flat and clean interface for the connection between the crown beam reinforcement and the pile reinforcement, thereby enhancing the reliability of the connection; When tying steel bars, stagger the joints to avoid concentrated weak points in the same section, improve the resistance and crack resistance of the crown beam and internal support, and control the joint area within 50% to ensure structural safety. The firm binding of stirrups and longitudinal steel bars can prevent the steel bars from shifting during concrete pouring and maintain structural stability. During concrete construction, layered pouring and vibration can eliminate bubbles and voids, ensuring that the concrete is dense, strong and durable. By controlling the spacing between the vibrating rods and the distance from the formwork, concrete segregation, honeycombing or surface roughness can be prevented, thereby improving the quality of concrete pouring.

[0013] Preferably, the inter-pile support for the foundation pit in S13 includes the following steps: Carry out foundation pit pile support: the soil between the retaining piles is sprayed with mesh protection as the foundation pit is excavated. The steel mesh is φ6@150×150. 16 horizontal reinforcement steel bars, vertical spacing is 1m; horizontal reinforcement steel bars are used 12 anchor bars are fixed and connected to the steel mesh; C20 concrete is used for shotcrete, and the thickness of the shotcrete is 100mm; The construction base cushion in S13 includes: pouring a 300mm thick C30 reinforced concrete cushion at the bottom of the foundation pit and arranging a double layer of φ6@150×150 steel mesh.

[0014] The soil between the retaining piles is protected by mesh spraying as the foundation pit is excavated, which can effectively prevent the soil from collapsing or sliding during the excavation process and ensure the safety of construction personnel and equipment; the sprayed C20 concrete cures quickly and can quickly form a solid protective layer, reducing construction waiting time and improving construction efficiency.

[0015] The setting of the steel mesh significantly improves the tensile strength of shotcrete, prevents concrete cracking, and improves the stability of the overall structure. The grid design of the steel mesh makes the stress evenly distributed in the concrete, reduces local stress concentration, and enhances the durability of the structure; the horizontal reinforcement steel bars enhance the bearing capacity and deformation resistance of the inter-pile support, especially in deep foundation pits or poor soil conditions, and can effectively resist the lateral pressure of the soil; the connection between the horizontal reinforcement steel bars and the steel mesh makes the support structure form a whole, improving the rigidity and stability of the structure; the anchor bars firmly fix the horizontal reinforcement steel bars to the retaining piles to prevent their displacement, ensuring the stability and reliability of the support structure.

[0016] The setting of the cushion layer at the bottom of the foundation pit provides a flat and solid foundation for the upper structure (such as the canopy), ensuring the stability and bearing capacity of the structure. The double-layer steel mesh significantly improves the tensile strength of the cushion layer, prevents concrete cracking, and enhances the integrity of the structure.

[0017] Preferably, S2 includes the following steps: S21. Construction of the canopy foundation: The canopy foundation is located within the foundation pit constructed in S1. Before pouring the canopy foundation concrete, pre-embed the anchor bolts. S22. Hoist and install steel columns; S23. Hoist and install steel beams, install the steel beams on top of the steel columns; install purlins and support systems; S24. Install the roof color panels and wall panels to complete the canopy installation.

[0018] Setting the canopy foundation inside the foundation pit effectively reduces the height of the canopy above the ground, fully utilizes the retaining structure of the foundation pit, provides a stable construction environment, and reduces displacement and deformation during foundation construction.

[0019] Preferably, S21 includes the following steps: The basic dimensions of the canopy are: length 1000mm × width 1000mm × depth 1000mm; After the canopy foundation is excavated to the designed elevation, C20 concrete is used to construct the canopy foundation cushion layer. After the canopy foundation cushion layer strength reaches 5MPa, the steel bars are tied and the embedded parts are installed. The canopy foundation reinforcement adopts Ø20 threaded reinforcement skeleton and Ø8 stirrups, and the canopy foundation embedded parts adopt M30 anchor bolts; Pour the canopy foundation. The canopy foundation concrete uses C30 commercial concrete, which is poured on site and vibrated evenly.

[0020] The 1000mm×1000mm×1000mm cubic foundation size provides sufficient bearing area and depth, which can effectively distribute the load of the upper steel columns and the canopy, ensure the stability of the canopy foundation in the foundation pit, and prevent the canopy from settling or tilting; The C20 concrete cushion provides a flat and solid bottom surface for the canopy foundation, ensuring the accuracy of subsequent installation of steel bars and embedded parts and preventing deviations caused by uneven foundations. The Ø20 threaded reinforcement frame provides high tensile strength and can effectively resist the tension and shear forces caused by the canopy load; the Ø8 stirrups enhance the integrity and shear resistance of the frame and prevent concrete cracking; C30 commercial concrete has high compressive strength and durability, and can withstand the canopy structure and construction loads for a long time, ensuring the stability of the foundation.

[0021] Preferably, S22 includes the following steps: Use 8T truck crane to hoist the steel column, and adopt single-machine rotation method for hoisting; After lifting the steel column, use a rope to pull the bottom of the steel column to stabilize it; lift the steel column to the installed anchor bolts, slowly lower the steel column, and use a rope to pull the bottom of the steel column to stabilize it. After the steel column is stable, align the connecting flange at the bottom of the steel column with the anchor bolt holes, and then fix it with bolts and nuts.

[0022] It is preferred to use an 8T truck crane for lifting steel columns, which can effectively prevent the lifting height from being too high and interfering with high-altitude wire harnesses, thereby improving the safety of construction; the single-machine rotation method only requires one crane, which adjusts the position by rotating the steel column, simplifies the lifting process, reduces the complexity of coordinating multiple devices, and is more suitable for lifting construction in complex environments with high-voltage wire harnesses, ensuring the safety of the lifting operation; after lifting the steel column, use a rope to pull the bottom of the steel column for stability, effectively controlling the swing of the steel column during the lifting process, and preventing shaking and collision caused by wind or improper operation.

[0023] Preferably, S23 includes the following steps: All steel beams are hoisted in a bundled manner, with the angle between the sling and the steel beam not less than 45°; The steel beam is hoisted horizontally to the top of the steel column, and the two ends of the steel beam are rotated using control cables to align with the installation axis and then dropped; When the steel beam approaches the top of the steel column, operate the control cables at both ends of the steel beam to make fine adjustments to ensure that the steel beam and the steel column are docked. After the steel beam and the steel column are correctly docked, install the bolts to fix them.

[0024] Bundled lifting fixes the steel beam at multiple points to ensure its stability during the lifting process, prevent it from slipping or tilting, and reduce the risk of safety accidents; controlling the sling angle to no less than 45° can effectively disperse the lifting load and reduce the risk of breakage caused by excessive force on the sling; the control cable adjusts the angle and position of the steel beam through rotation to ensure that the installation axis of the steel beam and the steel column are accurately aligned, improving installation accuracy and reducing the subsequent adjustment workload; when the steel beam approaches the top of the steel column, the control cable is operated to make fine adjustments to ensure that the docking position of the steel beam and the steel column is accurate, avoiding installation failure or structural instability due to deviation.

[0025] Preferably, S24 includes the following steps: S241. Installing Roof Panels: Install the first panel against the gable wall. Once the first panel is securely in place, draw a continuous guideline at the roof cornice. Using this guideline and the first panel as a guide, install subsequent panels. S242. Installation of wall panels: Wall panels shall be installed vertically from bottom to top and horizontally from one end of the building to the other. The mid-span deflection of the wall panels shall not exceed 1 / 200.

[0026] Use the first roof panel and the eaves alignment as a reference to ensure that the subsequent roof panels are installed at the same position and angle to avoid uneven roofing or uneven joints caused by accumulated deviations. Start installation from the gable side and use the alignment to ensure that the roof panels are aligned neatly. The vertical installation of wall panels from bottom to top allows the wall panels to be stressed layer by layer, with the bottom panel providing support for the upper part, reducing deformation or offset during installation and ensuring the overall stability of the wall. Horizontal installation from one end to the other forms a streamlined operation, simplifying construction organization, reducing repeated adjustments, and improving installation efficiency. The mid-span deflection of the wall panel does not exceed 1 / 200, effectively controlling the deformation of the panel under load (such as wind load), ensuring the flatness of the wall and long-term performance.

[0027] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a method for a canopy to pass through a high-voltage wire harness. The canopy is installed in a foundation pit through soil lowering construction. The height of the canopy top from the ground is controlled to be 5700mm to 6000mm, effectively reducing the height of the canopy above the ground. While retaining the complete function of the canopy, the canopy and the high-voltage wire harness are kept at a safe distance, avoiding direct contact or proximity between the canopy and the high-voltage wire harness during the canopy hoisting process, eliminating interference of the high-voltage wire harness with the canopy erection, meeting the requirements of relevant safety regulations, significantly reducing safety risks during construction, and ensuring the safety of construction personnel and equipment. The method for a canopy to pass through a high-voltage wire harness does not require relocation of the high-voltage wire harness or the canopy, significantly reducing construction costs. 2. The present invention provides a method for a canopy to pass through a high-voltage wire harness. During foundation pit excavation, the foundation pit is divided into a vertical shaft area and a soil bunker area. Traditional ground soil bunkers have many problems, such as occupying construction area, being inconvenient for earthwork transportation, and increasing construction costs. The present invention excavates the underground soil bunker during soil lowering construction, thereby improving site utilization. The soil bunker area and the vertical shaft area are excavated together, and the soil in the vertical shaft can be quickly transferred to the soil bunker and then quickly transported out by a dump truck. This simplifies the soil transportation process, eliminates the need for additional ground soil bunkers, and reduces construction costs. 3. The present invention provides a method for a canopy to pass through a high-voltage wire harness. When excavating a foundation pit, the excavation sequence of the foundation pit is optimized. The first earthwork layer is excavated first. By controlling the depth and length of the first earthwork layer, large-scale deep excavation at one time is avoided, the risk of soil collapse is reduced, and the first slope is constructed for easy soil transportation. When excavating the second earthwork layer, its depth in the shaft area takes into account the subsequent erection of the shaft lock ring beam, which is convenient for subsequent shaft excavation construction. A stable platform is formed by constructing the first step and the second step, which enhances the stability of the foundation pit excavation. The second slope is constructed for easy soil transportation. The second earthwork layer is excavated to the 1 / 2 position of the soil bin area, which reduces the risk of soil collapse. The foundation pit excavation sequence provides a stable foundation for the subsequent installation of the canopy, which is convenient for the subsequent canopy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the foundation pit plan; Figure 2 This is the construction sequence diagram of retaining piles; Figure 3 This is a schematic diagram of the longitudinal section of the foundation pit excavation.

[0029] Markings in the figure: 1- retaining piles, 2- internal support, 31- first earthwork layer, 311- first slope, 32- second earthwork layer, 321- first step, 322- second step, 323- second slope, 33- third earthwork layer, 331- third slope, 4- locking ring beam, 100- shaft area, 200- earth warehouse area. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments, as all technologies implemented based on the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or positional relationship, such as "upper", "lower", "left", "right", "center", "inside", and "outside", are based on the expressions of the orientation or positional relationship shown in the accompanying drawings, or are the orientation or positional relationship in which the invented product / device / apparatus is placed when it is conventionally used. These terms of orientation or positional relationship are merely for the purpose of facilitating the description of the scheme of the present invention or simplifying the description of the specific embodiments to facilitate the rapid understanding of the scheme by technicians, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be understood as limiting the present invention.

[0032] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simply understood that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", and "parallel", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the present invention.

[0033] In addition, the expressions “first”, “second”, “third”, etc. in the terms are merely used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0034] In addition, in the description of the embodiments of the present invention, "several," "plurality," and "a number" represent at least two. It can also be any number such as two, three, four, five, six, seven, eight, nine, or even more than nine.

[0035] Furthermore, in the description of the technical solution of the present invention, unless otherwise expressly specified, defined, or limited, the terms "disposed," "installed," "connected," "connected," "provided with," "laid," and "arranged" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections. They may be welded, riveted, bolted, threaded, or other commonly used connection methods in the art. Such connections may be mechanical, electrical, or communicative; they may be direct, indirect via an intermediate medium, or internally connected between two components.

[0036] Example 1 This embodiment provides a method for passing a high-voltage wire harness through a canopy, comprising the following steps: S1. Carry out soil lowering construction, including the following steps: S11.Construct foundation pit retaining piles 1.

[0037] Further, such as Figure 1 、 Figure 2 As shown, in this embodiment, the retaining piles 1 are constructed by drilling every three piles, and the construction interval between adjacent retaining piles 1 is not less than 24 hours.

[0038] Retaining piles 1 are typically constructed using bored cast-in-place construction. Continuous drilling can disturb the soil between adjacent pile holes, leading to hole wall collapse or pile hole deviation. A skipped drilling method increases the distance between adjacent piles (by at least three piles), minimizing disturbance of the surrounding soil during pile construction and reducing the risk of hole wall collapse, thereby ensuring pile verticality and quality. Concrete requires time to solidify after pouring to reach its design strength. The design interval between adjacent retaining piles 1 is no less than 24 hours. This allows sufficient initial setting time for the concrete of the previous pile, preventing quality defects such as segregation, honeycombing, and insufficient strength in the newly poured concrete caused by vibration from adjacent pile construction.

[0039] Furthermore, S11 may include the following steps: S111. Conduct construction preparations: Before the construction of retaining pile 1, conduct exploratory trench excavation. Excavate the trench to the original soil, identify the pipelines, and relocate the pipelines that affect the construction outside the construction range. Before the construction of retaining pile 1, conduct exploratory trench excavation to identify the location and direction of the underground pipelines to avoid accidental damage to the pipelines during construction, thereby reducing safety hazards and maintenance costs.

[0040] S112. Construction Measurement: The overall position of retaining pile 1 should be set out 50±5mm. A total station can be used for stakeout. After the center point of each retaining pile 1 is marked and fixed, the center point of the pile position is controlled. The center point and elevation point are located and then rechecked. The longitudinal error is ±100mm and the lateral error is 0-50mm. Precise stakeout and error control through construction measurement ensure that the position of retaining pile 1 meets design requirements, avoiding failure of the retaining structure or instability of the foundation pit due to deviation.

[0041] S113. Drilling: When the drilling rig is in place, align the drill rod vertically with the center of retaining pile 1. The verticality deviation of retaining pile 1 should not exceed 1%. Drilling: During the drilling process, slowly lower and lift the drill rod, start slowly and then speed up, and check the verticality deviation of the drill hole and correct it in time. During the drilling process, if the drill rod is found to be shaking or difficult to drill, the drilling speed should be slowed down to prevent the pile hole from deflecting, shifting and damaging the drilling tool. Hole cleaning: When the hole depth reaches the designed depth, the soil should be cleaned by idling at the bottom of the hole. The hole cleaning time should be no less than 10 minutes. When lifting the drill rod, the drill rod must not be bent; During drilling construction, strictly control the alignment and verticality of the drill rod to ensure that the retaining pile 1 is vertical and avoid tilting that may cause structural failure; slowly lower and raise the drill rod to reduce the risk of hole wall collapse and improve the quality of the hole; drill slowly first and then quickly to avoid unstable hole walls or drill sticking caused by drilling too quickly; after the hole reaches the designed depth, clean the hole to effectively clean impurities at the bottom of the hole and ensure the bearing capacity and stability of the pile bottom.

[0042] S114. Hoisting the steel cage: After the steel cage is hoisted vertically, check the verticality of the steel cage. After the steel cage frame enters the hole, straighten the steel cage and lower it to prevent the steel cage from swinging and colliding with the hole wall. Hoist the steel cage in the drilled hole to ensure that the steel cage is correctly positioned in the hole to avoid deviation that affects the quality of the pile.

[0043] S115. Concrete Pouring: After the reinforcement cage is placed, concrete pouring can be performed. Use C30 commercial concrete with a slump of 180-220mm. Overfill the top of retaining pile 1 by 5-10cm. Overfilling ensures that there are no voids or loose surfaces at the top of the pile, improving pile quality.

[0044] S12. Construct the crown beam of the retaining piles, the support 2 in the foundation pit and the retaining wall of the foundation pit.

[0045] Specifically, S12 includes the following steps: S121. Excavation of topsoil: After the concrete of retaining pile 1 reaches the design strength, excavate the topsoil to 10-30 cm above the bottom elevation of the cap beam and inner support 2. Excavation of topsoil should be delayed until the concrete of retaining pile 1 reaches the design strength to avoid construction disturbances that could affect the integrity of the pile and ensure structural safety. A 10-30 cm margin should be maintained to provide ample space for subsequent processes such as rebar binding and formwork installation, while also protecting the pile head from damage.

[0046] S122. Pile Head Chiseling: During excavation, ensure the protection of the reserved reinforcement. After excavation reaches the bottom elevation of the crown beam, remove the inferior concrete at the top of retaining pile 1 to the top elevation of retaining pile 1 (if the concrete is still inferior, continue chiseling until you reach fresh concrete). After excavation reaches the bottom elevation of the crown beam, remove the inferior concrete affected by bleeding or laitance, exposing the fresh, solid concrete surface. This ensures a secure connection between the crown beam and retaining pile 1, improves overall structural strength, and provides a smooth, clean interface between the crown beam reinforcement and the pile body reinforcement, enhancing connection reliability.

[0047] S123. Rebar Binding: Rebar joints within the same component and at the same interface should be staggered with a spacing of 35d and no less than 500mm. The area of ​​the stressed reinforcement in the joints within the same section should not exceed 50% of the total reinforcement area within the entire cross-section. Stirrups should be securely tied to the longitudinal reinforcement with wire. When tying the reinforcement, stagger the joints to avoid concentrated weak points within the same cross-section, improving the strength and crack resistance of the crown beam and internal support 2. The joint area should be controlled within 50% to ensure structural safety. Securely binding the stirrups to the longitudinal reinforcement prevents rebar shifting during concrete pouring and maintains structural stability.

[0048] S124. Install the crown beam formwork and the inner support 2 formwork; the formwork must be cleaned and coated with release agent before installation, and the steel bars must not be contaminated during application.

[0049] S125. Concrete Construction: The crown beam, internal support 2, and retaining wall are all cast using C30 commercial concrete. The concrete is poured and vibrated in layers, with each layer being 30 cm thick. During each layer, insert vibrators are used to vibrate the concrete as it is poured, inserting quickly and withdrawing slowly. Insertion points should be evenly spaced, moving point by point, and performed sequentially. The vibrator's movement interval should not exceed 1.5 times its effective radius (generally 30-40 cm). A distance of 5-10 cm should be maintained between the vibrator and the formwork. During concrete construction, layered pouring and vibration eliminate air bubbles and voids, ensuring dense, strong, and durable concrete. By controlling the spacing of the vibrators and their distance from the formwork, concrete segregation, honeycombing, or surface roughness can be prevented, improving concrete pour quality.

[0050] S13. Figure 1 、 Figure 3 As shown, excavate the foundation pit and carry out foundation pit pile support. The foundation pit pile support includes the following steps: Carry out foundation pit pile support: The soil between the retaining piles 1 is sprayed with mesh protection as the foundation pit is excavated. The steel mesh model is φ6@150×150. The steel mesh is set 16 horizontal reinforcement bars, 16 The vertical spacing of horizontal reinforcement bars is 1m. 12 anchor bars are fixed and connected to the steel mesh. C20 concrete is used for spraying concrete with a thickness of 100mm.

[0051] The soil between the retaining piles 1 is protected by mesh spraying as the foundation pit is excavated, which can effectively prevent the soil from collapsing or sliding during the excavation process and ensure the safety of construction personnel and equipment; the sprayed C20 concrete has a fast curing speed and can quickly form a solid protective layer, reducing construction waiting time and improving construction efficiency.

[0052] The setting of the steel mesh significantly improves the tensile strength of shotcrete, prevents concrete cracking, and improves the stability of the overall structure. The grid design of the steel mesh makes the stress evenly distributed in the concrete, reduces local stress concentration, and enhances the durability of the structure; the horizontal reinforcement steel bars enhance the bearing capacity and deformation resistance of the inter-pile support, especially in deep foundation pits or poor soil conditions, and can effectively resist the lateral pressure of the soil; the connection between the horizontal reinforcement steel bars and the steel mesh makes the support structure form a whole, improving the rigidity and stability of the structure; the anchor bars firmly fix the horizontal reinforcement steel bars on the retaining piles 1 to prevent their displacement, ensuring the stability and reliability of the support structure.

[0053] The foundation pit excavation is divided into the shaft area 100 and the earth warehouse area 200 (such as Figure 1 、 Figure 3 As shown in the dotted box, a first earthwork layer 31 is excavated. The first earthwork layer 31 is excavated from the shaft area 100 to the earthwork area 200. The depth of the first earthwork layer 31 does not exceed 3m, and the length of the first earthwork layer 31 does not exceed 20m. The first earthwork layer 31 is applied to the earthwork area 200 with a first slope 311 (e.g. Figure 3 As shown on the left side), the slope coefficient of the first slope 311 is 1:1.73.

[0054] Excavate the second earthwork layer 32, which is excavated from the shaft area 100 to the soil bin area 200. The depth of the second earthwork layer 32 in the shaft area 100 is the difference between the bottom elevation of the first earthwork layer 31 and the bottom elevation of the shaft lock ring beam 4. A first step 321 is constructed in the shaft area 100. The height of the first step 321 is 800±30mm, that is, Figure 3As shown, the elevation difference between the top of the first step 321 and the bottom of the locking ring beam 4 is 800±30mm. The depth of the second earthwork layer 32 in the earthwork area 200 is the difference between the bottom elevation of the first earthwork layer 31 and the bottom elevation of the earthwork area. The second earthwork layer 32 is excavated to the 1 / 2 position of the earthwork area 200 and a second slope 323 (for example Figure 3 As shown on the left side), the second slope 323 has a slope coefficient of 1:1.73, and a second step 322 is constructed in the earth warehouse area 200. The height of the second step 322 is 2000±50mm, that is, Figure 3 As shown, the elevation difference between the top of the second step 322 and the bottom of the soil bin is 2000±50mm.

[0055] The third earthwork layer 33 is excavated. The third earthwork layer 33 is the remaining earth to be excavated in the earth warehouse area 200. The third earthwork layer 33 is constructed into a third slope 331 (for example Figure 3 As shown on the left side), the third slope coefficient is 1:1.73, and the foundation pit excavation is completed.

[0056] Construction of the base cushion involves pouring a 300mm thick C30 reinforced concrete cushion at the bottom of the foundation pit and arranging a double layer of φ6@150×150 steel mesh. This cushion provides a flat, solid foundation for the upper structure (such as the canopy), ensuring structural stability and load-bearing capacity. The double layer of steel mesh significantly increases the tensile strength of the cushion, preventing concrete cracking and enhancing the integrity of the structure.

[0057] Complete soil lowering construction.

[0058] S2. Install a canopy in the foundation pit constructed in S1, with the top of the canopy 5700mm~6000mm above the ground.

[0059] The method for a canopy to pass through a high-voltage wire harness provided in this embodiment is to install the canopy in a foundation pit through soil lowering construction, and the height of the canopy top from the ground is controlled to be 5700mm to 6000mm, which effectively reduces the height of the canopy above the ground. While retaining the complete function of the canopy, the canopy and the high-voltage wire harness are kept at a safe distance, avoiding direct contact or proximity with the high-voltage wire harness during the canopy hoisting process, eliminating the interference of the high-voltage wire harness with the canopy erection, meeting the requirements of relevant safety regulations, significantly reducing the safety risks during the construction process, and ensuring the safety of construction personnel and equipment; the method for a canopy to pass through a high-voltage wire harness does not require relocating the high-voltage wire harness or the canopy position, and the construction cost is greatly reduced.

[0060] The method for the canopy to pass through the high-voltage wire harness provided in this embodiment is to divide the foundation pit into a vertical shaft area 100 and a soil bin area 200 during foundation pit excavation. Traditional ground soil bins have many problems such as occupying construction area, being inconvenient for earth transportation, and increasing construction costs. In this embodiment, an underground soil bin is excavated at the same time during soil lowering construction to improve site utilization. The soil bin area 200 and the vertical shaft area 100 are excavated together, and the soil in the vertical shaft can be quickly transferred to the soil bin and then quickly transported out by a dump truck, which simplifies the soil transportation process, eliminates the need to set up an additional ground soil bin, and reduces construction costs.

[0061] When excavating the foundation pit, the excavation sequence of the foundation pit is optimized. The first earthwork layer 31 is excavated first. By controlling the depth and length of the first earthwork layer 31, large-scale deep excavation is avoided at one time, reducing the risk of soil collapse. The first slope 311 is constructed to facilitate soil transportation. When excavating the second earthwork layer 32, its depth in the shaft area 100 takes into account the subsequent erection of the shaft lock ring beam 4, which is convenient for subsequent shaft excavation construction. A stable platform is formed by constructing the first step 321 and the second step 322, which enhances the stability of the foundation pit excavation. The second slope 323 is constructed to facilitate soil transportation. The second earthwork layer 32 is excavated to the position 2001 / 2 in the soil bin area, reducing the risk of soil collapse. This foundation pit excavation sequence provides a stable foundation for the subsequent installation of the canopy, facilitating the subsequent canopy installation.

[0062] Example 2 Based on Example 1, this example further illustrates step S2. The method for a canopy to pass through a high-voltage wire harness provided in this example includes the following steps: S21. Construction of canopy foundation: The canopy foundation is located in the foundation pit constructed in S1. Before pouring the canopy foundation concrete, pre-embed the anchor bolts.

[0063] Specifically, S21 includes the following steps: The canopy foundation is constructed of C30 reinforced concrete square foundations, cast on-site. The dimensions are: 1000mm long x 1000mm wide x 1000mm deep. This 1000mm x 1000mm x 1000mm cube provides ample load-bearing area and depth, effectively distributing the loads of the upper steel columns and canopy, ensuring stability within the foundation pit and preventing the canopy from settling or tilting.

[0064] After the canopy foundation is excavated to the design elevation, C20 concrete is used to create the canopy foundation cushion. Once the cushion strength reaches 5MPa, reinforcement is tied and embedded components are installed. The C20 concrete cushion provides a flat, solid base for the canopy foundation, ensuring the accuracy of subsequent reinforcement and embedded component installation and preventing deviations caused by uneven foundations.

[0065] The canopy foundation reinforcement adopts Ø20 threaded bar skeleton and Ø8 stirrups, and the canopy foundation embedded parts adopt M30 anchor bolts; the Ø20 threaded bar skeleton provides high tensile strength and can effectively resist the tension and shear force caused by the canopy load; the Ø8 stirrups enhance the integrity and shear resistance of the skeleton and prevent concrete cracking.

[0066] The canopy foundation was cast using C30 commercial concrete, poured on-site and vibrated evenly. C30 commercial concrete has high compressive strength and durability, capable of withstanding the canopy structure and construction loads for a long time, ensuring foundation stability.

[0067] S22. Hoist and install steel columns.

[0068] Specifically, S22 includes the following steps: An 8T truck crane is used to lift the steel columns, and the single-machine rotation method commonly used in industrial production is adopted for lifting the steel columns.

[0069] After lifting the steel column, use a rope to pull the bottom of the steel column to stabilize it; lift the steel column to the installed anchor bolts, slowly lower the steel column, and use a rope to pull the bottom of the steel column to stabilize it. After the steel column is stable, align the connecting flange at the bottom of the steel column with the anchor bolt holes, and then fix it with bolts and nuts.

[0070] It is preferred to use an 8T truck crane for lifting steel columns, which can effectively prevent the lifting height from being too high and interfering with high-altitude wire harnesses, thereby improving the safety of construction; the single-machine rotation method only requires one crane, which adjusts the position by rotating the steel column, simplifies the lifting process, reduces the complexity of coordinating multiple devices, and is more suitable for lifting construction in complex environments with high-voltage wire harnesses, ensuring the safety of the lifting operation; after lifting the steel column, use a rope to pull the bottom of the steel column for stability, effectively controlling the swing of the steel column during the lifting process, and preventing shaking and collision caused by wind or improper operation.

[0071] S23. Hoist and install steel beams, install steel beams on top of steel columns; install purlins and support system.

[0072] Specifically, S23 includes the following steps: All steel beams are hoisted using the bundled hoisting method commonly used in industrial production, with the angle between the sling and the steel beam not less than 45°; The steel beam is hoisted horizontally to the top of the steel column, and the two ends of the steel beam are rotated using control cables to align with the installation axis and then dropped; When the steel beam approaches the top of the steel column, operate the control cables at both ends of the steel beam to make fine adjustments to ensure that the steel beam and the steel column are docked. After the steel beam and the steel column are correctly docked, install the bolts to fix them.

[0073] Bundled lifting fixes the steel beam at multiple points to ensure its stability during the lifting process, prevent it from slipping or tilting, and reduce the risk of safety accidents; controlling the sling angle to no less than 45° can effectively disperse the lifting load and reduce the risk of breakage caused by excessive force on the sling; the control cable adjusts the angle and position of the steel beam through rotation to ensure that the installation axis of the steel beam and the steel column are accurately aligned, improving installation accuracy and reducing the subsequent adjustment workload; when the steel beam approaches the top of the steel column, the control cable is operated to make fine adjustments to ensure that the docking position of the steel beam and the steel column is accurate, avoiding installation failure or structural instability due to deviation.

[0074] S24. Install the roof color panels and wall panels to complete the canopy installation.

[0075] Specifically, S24 includes the following steps: S241. Installing Roof Panels: Install the first panel against the gable wall. Once the first panel is securely in place, draw a continuous guideline at the roof cornice. Using this guideline and the first panel as a guide, install subsequent panels. Using the first panel and the cornice guideline as a reference, ensure that the installation position and angle of subsequent panels are consistent to avoid accumulated deviations that could cause uneven roofing or uneven joints. Start installation at the gable wall, using the guideline as a guide to ensure the panels are aligned.

[0076] S242. Installation of wall panels: Wall panels shall be installed vertically from bottom to top and horizontally from one end of the building to the other. The mid-span deflection of the wall panels shall not exceed 1 / 200.

[0077] The vertical installation of wall panels from bottom to top allows the wall panels to be stressed layer by layer, with the bottom panel providing support for the upper part, reducing deformation or offset during installation and ensuring the overall stability of the wall. Horizontal installation from one end to the other forms a streamlined operation, simplifying construction organization, reducing repeated adjustments, and improving installation efficiency. The mid-span deflection of the wall panel does not exceed 1 / 200, effectively controlling the deformation of the panel under load (such as wind load), ensuring the flatness of the wall and long-term performance.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for a canopy to pass through a high-voltage wire harness, characterized in that: The following steps are involved: S1. Carry out soil lowering construction, including the following steps: S11. Construction of foundation pit retaining piles (1); S12. Construction of retaining pile cap beams, foundation pit supports (2) and foundation pit retaining walls; S13. Excavate the foundation pit and carry out support between the foundation pit piles; the foundation pit excavation is divided into the vertical shaft area (100) and the earth warehouse area (200). Excavating a first earthwork layer (31), the first earthwork layer (31) is excavated from the shaft area (100) to the earthwork area (200), the depth of the first earthwork layer (31) does not exceed 3m, the length of the first earthwork layer (31) does not exceed 20m, the first earthwork layer (31) is constructed into a first slope (311) in the earthwork area (200), and the slope coefficient of the first slope (311) is 1:1.73; Excavate the second earthwork layer (32), the second earthwork layer (32) is excavated from the shaft area (100) to the earth warehouse area (200), the depth of the second earthwork layer (32) in the shaft area (100) is the difference between the bottom elevation of the first earthwork layer (31) and the bottom elevation of the shaft lock ring beam (4), and construct the first step (321) in the shaft area (100), the height of the first step (321) is 800±30mm; the second earthwork layer (32) The depth of the earth warehouse area (200) is the difference between the bottom elevation of the first earthwork layer (31) and the bottom elevation of the earth warehouse. The second earthwork layer (32) is excavated to the position of 1 / 2 of the earth warehouse area (200) to construct a second slope (323). The slope coefficient of the second slope (323) is 1:1.

73. A second step (322) is constructed in the earth warehouse area (200). The height of the second step (322) is 2000±50mm. Excavate the third earthwork layer (33), the scope of the third earthwork layer (33) is the remaining earth to be excavated in the earth warehouse area (200), and the third earthwork layer (33) is constructed into a third slope (331), and the slope coefficient of the third slope is 1:1.73, thereby completing the foundation pit excavation; Construct the base cushion and complete the soil lowering construction; S2. Install a canopy in the foundation pit constructed in S1, with the top of the canopy 5700mm~6000mm above the ground.

2. The method for passing a high-voltage wire harness through a canopy according to claim 1, characterized in that: In S11, the retaining piles (1) are constructed by drilling every three, and the construction interval between adjacent retaining piles (1) is not less than 24 hours.

3. The method for passing a high-voltage wire harness through a canopy according to claim 1, characterized in that: S11 includes the following steps: S111. Preparation for construction: (1) Before the construction of retaining piles, trench excavation shall be carried out first. The trench excavation shall be carried out to the original soil, the pipelines shall be identified and the pipelines that affect the construction shall be moved outside the construction area; S112. Construction measurement: The pile position of the retaining pile (1) is set outward by 50±5mm. The pile position is set out. After the center point of each retaining pile (1) is fixed, the center point of the pile position is controlled. The longitudinal error of the setting out is ±100mm, and the lateral error is 0~50mm. S113. Drilling construction: When the drilling rig is in place, the drill rod is vertically aligned with the center of the retaining pile (1). The vertical deviation of the retaining pile (1) is not more than 1%. Drilling: During the drilling process, slowly lower and lift the drill rod, start slowly and then speed up, and at the same time check the verticality deviation of the drill hole and correct it in time; Hole cleaning: When the hole depth reaches the designed depth, the soil should be cleaned at the bottom of the hole in an idling manner. The hole cleaning time should be no less than 10 minutes. S114. Hoisting the rebar cage: After the cage is vertical, check its verticality. After the cage frame enters the hole, straighten the cage and lower it to prevent it from swinging and colliding with the hole wall. S115. Concrete pouring: After the steel cage is placed, concrete pouring is carried out, and the concrete on the top of the retaining pile (1) is over-poured by 5 to 10 cm.

4. The method for passing a high-voltage wire harness through a canopy according to claim 1, characterized in that: S12 includes the following steps: S121. Excavation of surface soil: After the concrete of the retaining piles (1) reaches the design strength, excavate the surface soil to 10cm to 30cm above the bottom elevation of the crown beam and inner support (2); S122. Pile head roughening: After excavating to the bottom elevation of the crown beam, remove the inferior concrete at the top of the retaining pile (1) to the top elevation of the retaining pile (1); S123. Tie Rebar: Rebar joints within the same member and at the same interface must be staggered with a spacing of 35d and not less than 500mm. The area of ​​the stressed reinforcement in the joints within the same section must not exceed 50% of the total reinforcement area within the entire cross-section. Stirrups must be securely tied to the longitudinal reinforcement with tying wire. S124. Install the crown beam formwork and the inner support (2) formwork; S125. Concrete construction: The crown beam, internal support (2) and retaining wall are all cast with C30 commercial concrete. The concrete is cast and vibrated in layers. The moving distance of the vibrating rod during vibration shall not exceed 1.5 times the effective radius of the vibrating rod. The distance between the vibrating rod and the formwork shall be maintained at 5 to 10 cm.

5. The method for passing a high-voltage wire harness through a canopy according to claim 1, characterized in that: The foundation pit pile support in S13 includes the following steps: Carry out foundation pit pile support: retaining pile (1) The soil between piles is sprayed with mesh as the foundation pit is excavated. The steel mesh is φ6@150×150. The steel mesh is set 16 horizontal reinforcement steel bars, vertical spacing is 1m; horizontal reinforcement steel bars are used 12 anchor bars are fixed and connected to the steel mesh; C20 concrete is used for shotcrete, and the thickness of the shotcrete is 100mm; The construction base cushion in S13 includes: pouring a 300mm thick C30 reinforced concrete cushion at the bottom of the foundation pit and arranging a double layer of φ6@150×150 steel mesh.

6. The method for passing a high-voltage wire harness through a canopy according to claim 1, characterized in that: S2 includes the following steps: S21. Construction of the canopy foundation: The canopy foundation is located within the foundation pit constructed in S1. Before pouring the canopy foundation concrete, pre-embed the anchor bolts. S22. Hoist and install steel columns; S23. Hoist and install steel beams, install the steel beams on top of the steel columns; install purlins and support systems; S24. Install the roof color panels and wall panels to complete the canopy installation.

7. The method for passing a high-voltage wire harness through a canopy according to claim 6, characterized in that: S21 includes the following steps: The basic dimensions of the canopy are: length 1000mm × width 1000mm × depth 1000mm; After the canopy foundation is excavated to the designed elevation, C20 concrete is used to construct the canopy foundation cushion layer. After the canopy foundation cushion layer strength reaches 5MPa, the steel bars are tied and the embedded parts are installed. The canopy foundation reinforcement adopts Ø20 threaded reinforcement skeleton and Ø8 stirrups, and the canopy foundation embedded parts adopt M30 anchor bolts; Pour the canopy foundation. The canopy foundation concrete uses C30 commercial concrete, which is poured on site and vibrated evenly.

8. The method for passing a high-voltage wire harness through a canopy according to claim 6, characterized in that: S22 includes the following steps: Use 8T truck crane to hoist the steel column, and adopt single-machine rotation method for hoisting; After lifting the steel column, use a rope to pull the bottom of the steel column to stabilize it; lift the steel column to the installed anchor bolts, slowly lower the steel column, and use a rope to pull the bottom of the steel column to stabilize it. After the steel column is stable, align the connecting flange at the bottom of the steel column with the anchor bolt holes, and then fix it with bolts and nuts.

9. The method for passing a high-voltage wire harness through a canopy according to claim 6, characterized in that: S23 includes the following steps: All steel beams are hoisted in a bundled manner, with the angle between the sling and the steel beam not less than 45°; The steel beam is hoisted horizontally to the top of the steel column, and the two ends of the steel beam are rotated using control cables to align with the installation axis and then dropped; When the steel beam approaches the top of the steel column, operate the control cables at both ends of the steel beam to make fine adjustments to ensure that the steel beam and the steel column are docked. After the steel beam and the steel column are correctly docked, install the bolts to fix them.

10. The method for passing a high-voltage wire harness through a canopy according to claim 6, characterized in that: S24 includes the following steps: S241. Installing Roof Panels: Install the first panel against the gable wall. Once the first panel is securely in place, draw a continuous guideline at the roof cornice. Using this guideline and the first panel as a guide, install subsequent panels. S242. Installation of wall panels: Wall panels shall be installed vertically from bottom to top and horizontally from one end of the building to the other. The mid-span deflection of the wall panels shall not exceed 1 / 200.

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