High-temperature and high-humidity environment enclosure modular production and installation method

Abstract

The application discloses a high-temperature and high-humidity environment enclosure wall modular manufacturing and installation method, and relates to the technical field of enclosure wall construction. The method comprises the following steps: adopting BIM modeling to optimize component size and installation nodes, and performing wind load simulation analysis and sample wall trial production; prefabricating concrete columns, steel columns and plastic-impregnated steel wire meshes; transporting components to a site and storing the components in a classified manner; measuring a line and rechecking; excavating foundation earthwork and performing foundation treatment; modularly hoisting the steel column to a foundation pit, backfilling and fixing after adjusting the perpendicularity by using temporary support; building brick walls between adjacent steel columns; prestressing and tensioning the plastic-impregnated steel wire meshes and fixing the plastic-impregnated steel wire meshes between the steel columns; installing steel wire meshes on the top of the enclosure wall; and performing decorative coating construction on the surface of the brick wall. The application combines factory prefabrication and modular installation, reduces on-site wet work and welding work, improves construction efficiency and installation precision, and enhances the durability of the enclosure wall in a high-temperature and high-humidity environment.

Description

Technical Field

[0001] This invention relates to the field of fence construction technology, and in particular to a modular fabrication and installation method for fences in high temperature and high humidity environments. Background Technology

[0002] With the rapid deployment of global photovoltaic power generation, petrochemical and other energy infrastructure projects in the Middle East and Southeast Asia, the demand for engineering construction in high-temperature and high-humidity environments is increasing. As an indispensable boundary enclosure structure for industrial plants and industrial parks, the construction efficiency and durability of perimeter walls directly affect the overall progress and safety of the project.

[0003] Currently, the construction of perimeter walls in high-temperature and high-humidity areas still largely adopts the traditional method of casting-in-place concrete foundations and on-site welding of metal mesh. This involves first binding steel bars, setting up formwork, and pouring concrete foundations on-site. After the foundation reaches sufficient strength, the columns and mesh frame are welded, and finally the metal mesh is installed.

[0004] Existing construction methods have revealed numerous shortcomings in high-temperature and high-humidity environments. Firstly, concrete sets rapidly under high temperatures, resulting in a short window for on-site pouring and a high risk of quality issues such as discontinuous pouring and insufficient compaction. Simultaneously, on-site welding operations are labor-intensive and inefficient under high temperatures and direct sunlight, leading to longer construction cycles. Secondly, on-site construction quality is significantly affected by worker skill levels; the verticality of columns and the flatness of the perimeter fence are difficult to control precisely. Furthermore, the high-temperature and high-salt environment has a significant corrosive effect on metal mesh and welds, and the service life of ordinary galvanized mesh in coastal areas like Oman is often far shorter than designed. Thirdly, recruiting skilled workers is difficult and labor costs are high in overseas projects. Extensive reliance on on-site operations not only increases labor costs but also adds uncertainty to project schedule management. Summary of the Invention

[0005] The main objective of this invention is to propose a modular fabrication and installation method for walls in high-temperature and high-humidity environments, aiming to solve the technical problems of low construction efficiency, difficulty in quality control, and insufficient weather resistance in existing technologies for walls in high-temperature and high-humidity environments.

[0006] To achieve the above objectives, the present invention proposes a modular fabrication and installation method for high-temperature and high-humidity environment fencing, the method comprising: BIM modeling was used to optimize the size and installation details of components, wind load simulation analysis was performed, and a prototype wall was fabricated to verify the process parameters. Precast concrete columns, steel columns, and PVC-coated wire mesh; The precast concrete columns, the steel columns, and the plastic-coated wire mesh were transported to the construction site, and the precast concrete columns and steel columns were stored separately in the hardened area. The construction site was laid out using surveying instruments, marking out the center line of the fence and the edge line of the foundation, and the layout results were verified. Excavate the foundation earthwork along the foundation edge line, and perform foundation treatment on the excavated base; The steel columns are modularly hoisted into the foundation pit using an excavator. Temporary supports are used to adjust the verticality of the steel columns. After the steel columns are adjusted into place, the soil is backfilled and the steel columns are fixed. A brick wall was built between two adjacent steel columns; The PVC-coated steel wire mesh is tensioned by applying prestress using a tensioning device, and the tensioned PVC-coated steel wire mesh is then fixed between two adjacent steel columns. Barbed wire was installed on the top of the fence; A decorative coating is applied to the surface of the brick wall.

[0007] The technical solution of this invention optimizes the design of component dimensions and installation nodes through BIM modeling, combined with wind load simulation analysis and prototype wall trial production to verify process parameters. This ensures the dimensional accuracy of each component and the accuracy of the installation node coordination during the factory prefabrication stage. By prefabricating concrete columns, steel columns, and PVC-coated wire mesh, and completing the anti-corrosion coating application of the steel columns and the PVC coating treatment of the wire mesh in the factory, the corrosion protection quality of key components is reliably guaranteed, unaffected by the high temperature and humidity environment on site. By transporting prefabricated components to the site and storing them in a hardened area with sunshade and rain protection measures, the components are ensured to be in good condition before installation. Accurate layout and verification using measuring instruments provide accurate planar positions and elevation benchmarks for subsequent foundation construction and column installation. Controlling the foundation excavation process... By reserving a manual cleaning layer and quantitatively controlling the compaction coefficient and bearing capacity characteristic value of the base, the load-bearing reliability of the wall foundation was ensured. Modular hoisting of steel columns using excavators, coupled with temporary supports for verticality calibration, significantly improved column installation efficiency while maintaining installation accuracy. Construction of brick walls between adjacent columns and implementation of a step-by-step acceptance system ensured the controllability and traceability of brick wall construction quality. Prestressing the PVC-coated wire mesh using tensioning equipment and precisely controlling flatness errors effectively eliminated the loosening and deformation problem of the flexible fence under high-temperature environments. Installing and tightening three barbed wires at the top of the wall created a reliable safety protection structure. Finally, applying a decorative coating to the brick wall surface improved the overall durability and appearance quality of the wall. Therefore, the technical solution of this invention realizes the transformation of wall construction from mainly on-site wet operation to factory prefabrication, modular hoisting and standardized installation, which significantly shortens the on-site construction period, improves the installation accuracy and first-time acceptance rate, and effectively controls labor costs by reducing reliance on skilled workers on site. The combined application of plastic-coated steel wire mesh and anti-corrosion coating greatly improves the durability of the wall in high temperature and high salt environment. Attached Figure Description

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0009] Figure 1 This is a flowchart illustrating an embodiment of the modular fabrication and installation method for high-temperature and high-humidity environment walls provided by the present invention.

[0010] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0012] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0013] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0014] With the rapid deployment of global photovoltaic power generation, petrochemical, and other energy infrastructure projects in the Middle East and Southeast Asia, the demand for engineering construction in high-temperature and high-humidity environments is increasing. As an indispensable boundary enclosure structure for industrial plants and parks, the construction efficiency and durability of fencing directly affect the overall project progress and operational safety. In this field, the shift from traditional cast-in-place concrete fencing to prefabricated assembled fencing has become a major direction of technological evolution, especially in overseas projects, where modular and standardized construction methods are increasingly valued by EPC contractors.

[0015] Currently, the construction of perimeter walls in high-temperature and high-humidity areas still largely employs the traditional method of casting-in-place concrete foundations combined with on-site welding of metal mesh. This involves first tying reinforcing bars, erecting formwork, and pouring the concrete foundation on-site. Once the foundation has reached sufficient strength, the posts and mesh frame are welded, and finally, the metal mesh is installed. This method has been used extensively in domestic and some overseas projects, and its construction technology is relatively mature. Some projects are also beginning to experiment with prefabricating some concrete components or welding mesh in factories, transporting them to the site for assembly, to shorten on-site work time. However, all these methods rely to varying degrees on on-site wet work and welding operations, placing high demands on on-site construction conditions and skilled workers.

[0016] Existing construction methods have revealed numerous shortcomings in high-temperature and high-humidity environments. Firstly, concrete sets rapidly under high temperatures, resulting in a short window for on-site pouring and a high risk of quality issues such as discontinuous pouring and insufficient compaction. Simultaneously, on-site welding operations are labor-intensive and inefficient under high temperatures and direct sunlight, leading to longer construction cycles. Secondly, on-site construction quality is significantly affected by worker skill levels; the verticality of posts and the flatness of the fence are difficult to control precisely. Furthermore, the high-temperature and high-salt environment has a significant corrosive effect on metal fences and welds, and the service life of ordinary galvanized mesh in coastal areas like Oman is often far shorter than designed. Thirdly, recruiting skilled workers is difficult and labor costs are high in overseas projects. Extensive reliance on on-site work not only increases labor costs but also adds uncertainty to project schedule management. Therefore, there is an urgent need for a high-temperature and high-humidity environment fence construction technology that can reduce on-site wet work and welding, decrease reliance on skilled workers, and offer excellent weather resistance.

[0017] To address the aforementioned technical problems, this invention proposes a modular fabrication and installation method for walls in high-temperature and high-humidity environments.

[0018] Please see Figure 1 In one embodiment of the present invention, the modular fabrication and installation method for a high-temperature and high-humidity environment fence includes: Step S10: Use BIM modeling to optimize the size and installation nodes of components, perform wind load simulation analysis, and trial-produce a sample wall to verify the process parameters. Step S20: Precast precast concrete columns, steel columns, and PVC-coated wire mesh; Step S30: Transport the precast concrete columns, the steel columns, and the plastic-coated wire mesh to the construction site, and store the precast concrete columns and steel columns separately in the hardened area. Step S40: Use measuring instruments to lay out the construction site, mark the center line of the wall and the edge line of the foundation, and verify the layout results; Step S50: Excavate the foundation earthwork along the foundation edge line and perform foundation treatment on the excavated base. Step S60: Use an excavator to modularly hoist the steel column into the foundation pit, use temporary supports to adjust the verticality of the steel column, and backfill the soil and fix the steel column after the steel column is adjusted into place. Step S70: Construct a brick wall between two adjacent steel columns; Step S80: Apply prestress to the PVC-coated steel wire mesh using a tensioning device, and fix the tensioned PVC-coated steel wire mesh between two adjacent steel columns; Step S90: Install barbed wire on top of the fence; Step S100: Apply a decorative coating to the surface of the brick wall.

[0019] It should be noted that the modular fabrication and installation method for high-temperature and high-humidity environment fencing provided in this embodiment is a systematic construction method based on the combination of BIM digital technology and modular prefabrication assembly technology. This method is mainly suitable for overseas engineering environments with high temperature and high salinity, high temperature and high humidity, and limited construction resources, such as photovoltaic power stations and industrial parks in the Middle East that require rapid enclosure. The precast concrete columns bear the vertical load of the fencing and transfer the load to the foundation. The steel columns serve as the supporting framework for the PVC-coated wire mesh. The PVC-coated wire mesh is made of 3.55mm diameter steel wire treated with a PVC coating process, and its surface is covered with an anti-corrosion layer, providing corrosion resistance and UV resistance.

[0020] Specifically, this embodiment effectively solves the problems of low construction efficiency and difficult quality control in high-temperature environments by transforming the traditional construction method of cast-in-place concrete and on-site welding into a method combining factory prefabrication and on-site modular assembly. By using BIM modeling to pre-optimize component dimensions and installation nodes, design conflicts can be eliminated before construction, ensuring the accuracy of component fit. The introduction of wind load simulation analysis allows for pre-verification of the wall structure's wind resistance in high-temperature and high-humidity environments, avoiding structural instability due to insufficient wind load estimation. The trial production of sample walls confirms process parameters through physical verification, ensuring the accuracy of all parameters during subsequent large-scale construction. The various processes in this method are closely linked, reducing on-site wet work and welding through factory production, lowering the labor intensity of workers in high-temperature environments, and shortening the construction cycle.

[0021] More specifically, this embodiment is executed in the order of steps S10 to S90. Step S10 involves assembling a BIM technology team, collecting climate and geological data of the project site, inputting the design drawings into BIM software to create a 3D information model of the wall structure, accurately modeling the dimensions of precast concrete columns, steel columns, and PVC-coated wire mesh in the model, and performing collision checks on the installation nodes of the columns and the connection nodes between the wire mesh and the columns. Based on the check results, the component dimensions and connection methods are optimized. Subsequently, the BIM model is imported into finite element analysis software, local wind speed and direction parameters are set, and wind load simulation analysis is performed to verify the stress and deformation of the wall structure under different wind pressures. The final component specifications and connection node construction are determined based on the simulation analysis results. Then, three sample walls are fabricated according to the optimized parameters. During the construction of the sample walls, process parameters such as the demolding strength of the concrete columns, the installation accuracy of the columns, and the tension of the wire mesh are recorded. Parameters that do not meet the design requirements are adjusted to form a standardized list of process parameters. Step S20: Precast precast concrete columns, steel columns, and PVC-coated wire mesh according to the parameters determined in Step S10, strictly controlling the dimensional tolerances of each component during the precasting process. Step S30: Classify and package the precast components, transport them to the construction site using specialized vehicles, and store them according to component type in a pre-leveled and hardened storage area. Precast concrete columns and steel columns are stacked according to specifications, while PVC-coated wire mesh is stored under a rain shelter. Step S40: Use a total station and laser level to survey and lay out the construction site, marking the center line of the perimeter wall and the foundation edges with lime or wooden stakes. After the layout is completed, the surveyors verify the results. Step S50: Excavate the foundation earthwork along the foundation edges, using mechanical excavation combined with manual trench cleaning to clean and compact the foundation, ensuring the bearing capacity meets design requirements. Step S60: Using an excavator, the steel columns are hoisted one by one into the foundation pit. Temporary supports are installed to adjust the verticality of the columns. A laser level is used for calibration. After calibration, the soil is backfilled and the columns are fixed. Step S70: A brick wall is built between adjacent steel columns. Following the principle of acceptance before concealment, each process is inspected and approved before proceeding to the next. Step S80: The plastic-coated steel wire mesh is cut to the actual dimensions of the wall, leaving a connection allowance. The wire mesh is unfolded starting from one end of the wall. Prestress is applied using tensioning equipment, and then the wire mesh is fixed between adjacent steel columns. Step S90: Three barbed wires are installed at the top of the wall at the designed spacing. The barbed wires are securely connected to the steel columns and tightened to prevent loosening. Finally, a stone-like paint decorative coating is applied to the surface of the brick wall. Before application, the wall surface is cleaned of dust and debris to ensure a firm coating adhesion.

[0022] In an embodiment of the present invention, the steps of using BIM modeling to optimize the dimensions and installation nodes of components, performing wind load simulation analysis, and prototyping a sample wall to verify the process parameters include: Step S110: Simulate a high temperature and high humidity environment, conduct weather resistance tests on the plastic-coated steel wire mesh, strength tests on the precast concrete columns, and wind load tests on the connection nodes of the steel columns, and optimize construction parameters based on the trial production results of the sample wall.

[0023] It should be noted that this embodiment further defines the sample wall trial production and process parameter verification stage in step S10. High temperature and high humidity environment refers to climatic conditions where the temperature is consistently above 35 degrees Celsius and the relative humidity is greater than 70%. Under such conditions, the mechanical properties and durability of materials will change. Weather resistance testing is used to evaluate the corrosion and aging resistance of PVC-coated steel wire mesh under high temperature, high humidity, and high salt spray conditions. Strength testing is used to verify the strength development law of precast concrete columns under high temperature curing conditions. Wind load resistance testing is used to verify the load-bearing capacity and fatigue performance of steel column connection nodes under repeated wind loads.

[0024] Specifically, this embodiment effectively avoids quality risks caused by insufficient environmental adaptability by systematically conducting various material and structural performance tests before construction and feeding the test results back into the optimization process of construction parameters. Since the high temperature and humidity environment in Oman has a significant corrosive effect on metallic materials and also significantly affects the hydration and hardening process of concrete, testing the corrosion rate of PVC-coated wire mesh, the strength development curves of precast concrete columns at different curing temperatures, and the deformation characteristics of connection nodes under wind loads in a simulated environment beforehand can accurately grasp the performance degradation law of materials under extreme environments, thus providing a scientific basis for temperature control and curing measures at the construction site. The trial production of the sample wall is a comprehensive test of the overall construction process. Through the sample wall, problems in the connection between various processes can be identified, and process parameters can be adjusted in a timely manner.

[0025] More specifically, this embodiment adds an environmental simulation test procedure during step S10. Temperature, humidity, and salt spray concentration parameters consistent with those of Oman are set in a dedicated environmental simulation test chamber. The PVC-coated steel wire mesh samples are continuously exposed to this environment, and periodically removed to check for changes in the appearance of the PVC coating. The degree of adhesion reduction and corrosion depth of the steel wire substrate are measured, and weather resistance data are recorded. For precast concrete columns, standard test blocks are made and cured in a simulated high-temperature environment. Their cubic compressive strength at different ages is tested, strength development curves are plotted, and the shortest curing time required to meet 70% of the design strength is determined. Full-scale specimens are made for the connection nodes of the steel columns, installed on a wind load test platform, and cyclic wind loads are applied to simulate local extreme wind conditions. The displacement and residual deformation of the nodes under different load levels are measured to confirm the load-bearing safety margin of the nodes. Based on the above test data, construction parameters such as material arrival inspection standards, concrete curing regime, and connection node reinforcement measures are optimized and adjusted. Then, according to the optimized parameters, three sample walls were made on site, each no less than 6 meters long, covering all processes such as foundation construction, column installation, brick wall construction, wire mesh tensioning and barbed wire installation. All quality indicators of the sample walls were comprehensively tested, and the test results were compared with the design requirements. The reasons for non-compliance were analyzed and the construction parameters were adjusted again until all indicators were qualified.

[0026] In an embodiment of the present invention, the steps of fabricating the precast concrete columns, steel columns, and PVC-coated wire mesh include: Step S210: Embed and fix the steel pole into the customized mold, adjust the exposed height of the steel pole to meet the design requirements, pour the customized mold with high temperature and appropriate mix ratio concrete, and demold after curing until the concrete reaches more than 70% of the design strength to obtain the precast concrete column. Step S220, using 48 The steel column is made of 2.4mm steel pipe, and an anti-corrosion coating is applied to the surface of the steel column; Step S230: Cut the PVC-coated steel wire mesh according to the design dimensions and control the thickness of the PVC coating layer of the PVC-coated steel wire mesh to meet the design requirements.

[0027] It should be noted that this embodiment further defines the specific operation method of prefabricating each component in step S20. The steel upright is a vertical stiffener embedded inside the concrete column, and its portion protruding from the top surface of the concrete column is used to connect with the upper steel upright. The custom mold is a steel mold specially processed according to the design cross-section and length of the prefabricated concrete column, and the mold is equipped with a steel upright positioning device. 48 2.4mm steel pipe refers to welded steel pipe with an outer diameter of 48 mm and a wall thickness of 2.4 mm. This specification of steel pipe has moderate cross-sectional stiffness and self-weight, facilitating transportation and hoisting. The anti-corrosion coating is a special weather-resistant anti-corrosion coating, which can adopt a matching system of epoxy zinc-rich primer and polyurethane topcoat. The dip-coating layer is formed by immersing steel wire mesh in heated molten plastic sol, and after cooling, a continuous and dense plastic covering layer is formed on the surface of the steel wire.

[0028] Specifically, in this embodiment, the steel uprights are pre-embedded in the concrete column mold and cast integrally, forming a unified load-bearing unit between the steel uprights and the concrete column, thus avoiding positioning errors during on-site installation via rebar anchoring or bolt connections. Precise control of the exposed height of the steel uprights directly determines the consistency of the top elevation of the subsequently installed steel columns. Excessive deviation in exposed height will result in the tops of the steel columns not being on the same horizontal plane, affecting the straightness of the barbed wire tension and the overall aesthetic quality. High-temperature adaptable concrete mixes utilize retarders and mineral admixtures to adjust the cement hydration heat release rate, preventing excessive slump loss and early cracking under high-temperature conditions. 48 The 2.4mm steel pipe's cross-sectional dimensions balance the column's load-bearing capacity with lightweight transportation requirements. The surface anti-corrosion coating is applied in the factory using a high-pressure airless spraying process, ensuring better coating thickness and adhesion compared to on-site painting. Controlling the thickness of the PVC-coated steel wire mesh's coating is a key parameter for ensuring its corrosion resistance.

[0029] More specifically, in this embodiment, during step S20, each component is prefabricated according to the following procedures. For prefabricated concrete columns, steel molding molds are first fabricated based on the BIM-optimized concrete column design drawings. The dimensional tolerance of the molds is controlled within ±2mm. Multiple molds are arranged in a straight line in the prefabrication workshop and fixed to the platform base using anchor bolts. Steel upright positioning clamps are installed inside the molds. The steel uprights are vertically inserted into the positioning clamps, and the height of the positioning clamps is adjusted so that the height of the top of the steel upright protruding from the upper surface of the mold precisely meets the design requirements, with an allowable deviation of ±2mm. After the steel uprights are positioned, the gap between the steel uprights and the mold is filled tightly with fine aggregate concrete to prevent grout leakage. Subsequently, cement, sand, crushed stone, water, retarder, and mineral admixtures are weighed according to the high-temperature adaptability mix ratio and added to a mixer for forced mixing to obtain a concrete mixture with a slump controlled between 160mm and 200mm. Concrete is poured into the formwork in layers, each layer not exceeding 300mm in thickness. An immersion vibrator is used to compact each layer, with the vibration time determined by the time the concrete surface shows a layer of slurry and no further significant settling occurs. After pouring, the top surface of the concrete column is smoothed twice: the first time two hours after pouring, and the second time before initial setting. The cast concrete column is covered with a moisture-retaining curing cloth, and the curing time is determined based on the strength development characteristics under high-temperature conditions. The curing cloth is kept continuously moist during the curing period. The formwork can only be removed and the concrete column transferred to the finished product storage area when the compressive strength of the test blocks cured under the same conditions reaches more than 70% of the design strength grade. For steel columns, 48... 2.4mm steel pipes are cut to the designed length, and the end faces are ground smooth. The pipe surface is then sandblasted to remove rust, achieving a rust removal grade of Sa2.5. Subsequently, one coat of epoxy zinc-rich primer is applied within 4 hours, with a dry film thickness of no less than 60μm. After the primer is fully dry, two coats of polyurethane topcoat are applied, each with a dry film thickness of no less than 40μm, for a total dry film thickness of no less than 140μm. For PVC-coated wire mesh, 3.55mm diameter steel wires are woven into a mesh sheet, with the mesh size controlled according to design requirements. The woven wire mesh is then PVC-coated, with the plasticizing temperature and time controlled to ensure a uniform PVC coating thickness. After cooling, a magnetic thickness gauge is used to check the PVC coating thickness. Any areas that do not meet the requirements are recoated. The mesh is then cut into sections according to the designed dimensions, and the ends are sealed to prevent the PVC coating from peeling off.

[0030] In an embodiment of the present invention, the steps of transporting the precast concrete columns, the steel columns, and the plastic-coated wire mesh to the construction site, and classifying and storing the precast concrete columns and steel columns in a hardened area, include: Step S310: Transport the PVC-coated steel wire mesh in roll form, and perform moisture-proof treatment and damage-proof packaging on the PVC-coated steel wire mesh; Step S320: The precast concrete columns and steel columns are sorted and stacked according to specifications in a flat, hardened storage area with drainage measures. The stacking height of the precast concrete columns and steel columns is less than or equal to 2 layers. Step S330: Store the PVC-coated wire mesh inside the sunshade and rainproof awning.

[0031] It should be noted that this embodiment further defines the component transportation and on-site storage methods in step S30. Roll transportation involves winding the PVC-coated wire mesh into rolls for packaging and transportation, reducing transportation volume and preventing irreversible bending of the mesh during transport. Moisture-proofing involves placing desiccants inside the packaging material or wrapping it with a moisture-proof film to prevent moisture from corroding the PVC coating and the wire matrix during transportation. Damage-proof packaging involves covering the PVC-coated wire mesh roll with cushioning material to prevent wear of the PVC coating caused by friction between the wires during transport. Hardened site refers to a site whose surface has been hardened with concrete or compacted with graded crushed stone, possessing good load-bearing capacity and flatness. A sunshade and rain shelter is a temporary structure with a roof that can block direct sunlight and prevent rain from getting in.

[0032] Specifically, this embodiment implements targeted measures for the transportation and storage of different components to ensure the components remain in good condition from factory to installation. Transporting PVC-coated wire mesh in rolls reduces deformation and creases, as creases are difficult to completely eliminate during tensioning and can affect the flatness of the wall. Moisture-proof treatment and damage-proof packaging address the high humidity environment inside containers during overseas shipping and the impact of bumps and collisions during transport. If the PVC coating becomes damp, blister, or is worn, its corrosion resistance will significantly decrease. Precast concrete columns and steel columns are stacked according to specifications with limited stacking height to prevent deformation or overturning due to improper stacking. This is especially important for thinner steel columns; excessive stacking can cause the bottom steel pipes to deform elliptically under long-term pressure. PVC-coated wire mesh is stored in a shaded and rainproof shed because long-term UV exposure can cause the plasticizer in the PVC coating to evaporate, leading to aging and cracking. Rainwater can seep into the space between the wires and the PVC coating through the end cuts, accelerating internal wire corrosion.

[0033] More specifically, in step S30 of this embodiment, the PVC-coated wire mesh is rolled up. Each section of wire mesh is tightly wound from one end into a roll with a diameter not exceeding 1 meter. A layer of bubble wrap or rubber pad is wrapped around the outside of the roll as a cushioning layer, and then the whole roll is placed in a moisture-proof plastic film bag. The opening is sealed tightly with sealing tape, and a silica gel desiccant packet is placed inside the bag. Finally, the moisture-proof packaged wire mesh roll is placed in a wooden box or steel frame box. During transportation, the wire mesh rolls are stacked in the same direction to avoid excessive local pressure caused by cross-stacking. For precast concrete columns, wooden blocks are used to separate adjacent components during transportation. Each layer of wooden blocks is placed about 500mm from both ends of the component, and the components are securely tied on the transport vehicle. Steel columns are bundled in groups according to length, with each bundle not exceeding 10 columns, and each layer is separated by wooden blocks. After the components arrive at the site, storage areas are divided according to component type on the pre-leveled and hardened storage area. Precast concrete columns and steel columns are stacked separately according to specifications and models. The bottom layer is laid with wooden blocks to ensure that the components are at least 200mm off the ground. The stacking height does not exceed two layers, and each layer is separated by wooden blocks, with the upper and lower layers of wooden blocks aligned. The storage area for PVC-coated wire mesh is equipped with an independent sunshade and rainproof shed. The shed roof is paved with corrugated steel sheets, and drainage ditches are set up around the perimeter to ensure that rainwater is drained away in time. The wire mesh rolls are neatly arranged inside the shed, with a moisture-proof mat layer laid at the bottom. The distance between adjacent wire mesh rolls is not less than 300mm for easy access and ventilation. Wire mesh rolls must not be directly stacked.

[0034] In an embodiment of the present invention, the step of using measuring instruments to lay out the construction site, marking out the center line of the wall and the edge line of the foundation, and verifying the laying out results includes: Step S410: Use a total station and a laser level to lay out the center line of the wall and the edge line of the foundation, and mark the center line of the wall and the edge line of the foundation with markers; Step S420: On-site verification of elevation and distance data, comparing the elevation and distance data with the design drawings, and proceeding to the next process after confirming that there are no errors.

[0035] It should be noted that this embodiment further defines the measurement and layout operation method in step S40. A total station is a surveying instrument integrating electronic distance measurement, electronic angle measurement, and data recording functions, capable of accurately determining the plane coordinates and elevation of points. A laser level is a surveying device that uses a laser beam to form a horizontal baseline, used for elevation transfer and levelness control. The centerline of the fence refers to the geometric centerline of the fence's longitudinal arrangement, serving as the benchmark for determining the fence's planar position. The foundation edge line refers to the boundary line of the foundation excavation; its horizontal distance from the centerline is determined by the foundation width. Markers can be materials such as lime powder, wooden stakes, or paint that can be clearly marked on the construction site and remain for a period of time.

[0036] Specifically, this embodiment ensures the accuracy of the wall's plan position and elevation benchmark by using a total station and a laser level in conjunction with a post-layout verification system. Since the total length of the wall is several kilometers, a single measurement method may accumulate errors during long-distance laying out. The total station can accurately lay out the coordinates of the center point of each post based on the control network, ensuring that the spacing and straightness between points meet design requirements. The laser level provides a unified horizontal reference surface, ensuring that the installation elevation of all posts is based on the same elevation system, avoiding inconsistencies in the top elevation of adjacent posts due to elevation transfer errors. A double verification is performed after the laying out is completed, comparing the measured data with the design drawings. This system can detect reading or marking errors during the laying out process, preventing erroneous positional information from being transmitted to subsequent foundation construction procedures.

[0037] More specifically, in this embodiment, during step S40, the design coordinates and elevations of the center points of each column are first extracted from the BIM model based on the design drawings, and a layout data table is compiled. At the construction site, based on the project's measurement control network, a total station is set up on a known control point, and another known control point is used for orientation. The design coordinates of the layout point are input, the total station's aiming head is rotated to zero the horizontal angle, and the operator is directed to move the prism to the designated position. When the difference between the measured coordinates displayed by the total station and the design coordinates is within the allowable range, that point is determined as the column center point. After laying out all the column center points sequentially along the length of the wall, an ink line is drawn between adjacent column center points as the wall center line. Then, based on the foundation width, the foundation edge lines are measured on both sides of the wall center line, and the foundation edge lines are laid out using the same method. Lime powder is used to sprinkle a white lime line approximately 50mm wide along the foundation edge line, and wooden stakes are driven into the two ends and the middle inflection point of the wall center line and nailed with iron nails as permanent markers. Subsequently, a laser level was set up in an open area, leveled, and the laser beam was turned on. The height of the laser horizontal plane was read on the wooden stake. Combined with the foundation bottom elevation and column top elevation given in the design drawings, the excavation depth and control elevation of each layout point were calculated, and the elevation values ​​were marked with paint on the side of the wooden stake. After all the layout work was completed, another surveyor independently re-measured, that is, the total station and laser level were re-set up, and the coordinates and elevations of no less than 30% of the layout points were re-measured. The re-measurement results were compared with the original layout data. If the coordinate deviation did not exceed 5mm and the elevation deviation did not exceed 3mm, the layout was considered qualified, and the foundation excavation process could begin.

[0038] In an embodiment of the present invention, the steps of excavating the foundation earthwork along the foundation edge and performing foundation treatment on the excavated base include: Step S510: Excavate the foundation soil using mechanical excavation combined with manual trench cleaning. Leave 10cm to 20cm of bottom soil for manual cleaning down to the bottom elevation of the cushion layer. Excavation depth must not exceed the design bottom elevation. Step S520: Remove the topsoil, plant roots, construction waste, and silt from the base; place the base on the old soil layer or the compacted fill layer; control the compaction coefficient of the foundation to be greater than or equal to 0.95; and control the bearing capacity characteristic value of the foundation to be greater than or equal to 120 kPa. Step S530: When pouring foundation concrete, a vibrator is used to compact it.

[0039] It should be noted that this embodiment further defines the foundation excavation and foundation treatment operation methods in step S50. Mechanical excavation refers to the method of using earthmoving machinery such as excavators for large-volume earthwork excavation, suitable for foundation engineering with large excavation volumes and depths. Manual trench clearing refers to the operation method where, after mechanical excavation has reached near the design elevation, the remaining thin layer of soil is manually cleared down to the design elevation using tools such as shovels. Topsoil is a surface soil layer rich in organic matter and with a loose structure, exhibiting low bearing capacity and high compressibility. Subsurface ridges are soft soil zones buried underground, typically soft plastic or fluid plastic cohesive soils formed from ancient riverbeds or swamp deposits, with extremely low bearing capacity. The compaction coefficient is the ratio of the dry density of the compacted fill to the maximum dry density, reflecting the degree of compaction of the fill. The characteristic value of bearing capacity is the representative value of the maximum load that the foundation can withstand while ensuring stability and that deformation does not exceed allowable values.

[0040] Specifically, this embodiment prevents disturbance to the original soil of the foundation by reserving a manual cleaning layer and strictly controlling the excavation depth. If the excavator bucket teeth dig directly to the bottom elevation when approaching the design elevation, it often disturbs the original soil below the foundation, forming a soft layer and reducing the bearing capacity of the foundation. Reserving 10cm to 20cm of bottom soil for manual cleaning ensures that the foundation is flat and the original soil is not damaged. Thorough removal of undesirable soil layers and quantitative control of the foundation compaction coefficient and bearing capacity characteristic value ensure that the foundation will not crack or tilt due to uneven settlement of the foundation under high temperature environment. Since some areas in Oman may have loose aeolian sand or saline soil, the bearing capacity of these soil layers is far lower than the design requirements and must be removed and replaced. Using a vibrator to compact the foundation concrete is a key operation to ensure the compactness of the concrete. Insufficient compaction will form defects such as honeycomb and pitting, reducing the bearing capacity and durability of the foundation.

[0041] More specifically, in this embodiment, step S50 is performed according to the following procedures. First, based on the foundation boundary lines and marked elevation control points laid out in step S40, the excavator operator excavates according to the boundary line positions. The excavator excavates in sections from one end of the foundation to the other, with each section not exceeding 10 meters in length. The excavation depth is controlled to stop mechanical excavation at 20cm above the design bottom elevation. Subsequently, manual labor is arranged to use flat-head shovels and wheelbarrows to clean up the remaining subsoil from the foundation. During the cleaning process, the foundation elevation is measured continuously with a level to ensure that the foundation elevation is not higher than the design bottom elevation and not lower than the design bottom elevation by more than 30mm. The cleaned topsoil and surface debris are transported to a designated spoil disposal site by dump trucks. After the foundation cleaning is completed, quality inspectors conduct a comprehensive inspection of the foundation. For any undesirable soil layers such as topsoil, plant roots, construction waste, or silt from hidden puddles, the cleaning width is expanded outward from the boundary of the undesirable soil layer by not less than 500mm, and the cleaning depth extends to the top surface of the old soil layer. After cleaning, if the base is located on the old soil layer, proceed directly to the next step; if the base is lower than the top surface of the old soil layer, backfill with graded sand and gravel in layers to the design base elevation, with each layer not exceeding 300mm in thickness. Compact each layer using a plate vibratory compactor, testing the compaction coefficient after each layer. The next layer can only be laid after the compaction coefficient reaches 0.95 or higher. After backfilling, a light dynamic penetration test is conducted on-site to test the foundation bearing capacity. Test points are set every 20 meters along the foundation length, with a minimum of three points. The foundation treatment is confirmed to be qualified when the characteristic value of the bearing capacity reaches 120kPa or higher. Before pouring the foundation concrete, install the foundation formwork and reinforcing steel frame on the base. After acceptance, pour C30 concrete using a 50mm diameter immersion vibrator. The vibrator insertion interval should not exceed 400mm, with quick insertion and slow withdrawal, until no more air bubbles emerge from the concrete surface and a layer of slurry appears on the surface.

[0042] In an embodiment of the present invention, the steps of using an excavator to modularly hoist the steel column into the foundation pit, using temporary supports to adjust the verticality of the steel column, and backfilling and fixing the steel column after it has been adjusted to the correct position include: Step S610: Use an excavator to lift the steel column. Before lifting, check the integrity of the lifting equipment and set a lifting point on the top of the steel column. Step S620: Place the steel column in the foundation pit, using 48 The temporary support was erected using 2.4mm steel pipes; Step S630: Use a laser level to calibrate the verticality and installation elevation of the steel column; Step S640: After the steel column is adjusted into place, backfill the soil and compact it. The backfilling is completed before the plastic-coated wire mesh is installed, and the backfill soil is prohibited from colliding with the brick wall that has been built during the backfilling process. Step S650: Verify the verticality and installation elevation of the steel column. The verticality deviation of the steel column is less than or equal to 3mm / m, and the installation elevation deviation of the steel column is less than or equal to 5mm. Step S660: After strong winds and heavy rain, conduct a comprehensive inspection of the verticality of the steel column and the stability of the temporary support.

[0043] It should be noted that this embodiment further defines the operation methods of column hoisting, temporary support, calibration, backfilling, and inspection in step S60. The hoisting equipment includes wire ropes, hooks, shackles, and slings, etc., used to connect the hoisting machinery and the components. Temporary support is a temporary structure used to maintain the stability of the column and provide adjustment margin after the column is hoisted into place and before backfilling is completed. 48 Temporary supports erected using 2.4mm steel pipes are formed by connecting these pipes with fasteners. Verticality deviation refers to the ratio of the horizontal offset corresponding to the angle between the column centerline and the plumb line to the column height, expressed in millimeters per meter. Elevation deviation refers to the difference between the actual elevation of the top of the column and the design elevation.

[0044] Specifically, this embodiment ensures that the installation accuracy of the steel columns meets design requirements through a series of operations, including pre-lifting inspection, reasonable setting of lifting points, smooth lifting by excavator, firm erection of temporary supports, and precise calibration with a laser level. The steel columns are the vertical load-bearing components of the fence and the supporting framework of the wire mesh. Their verticality and top elevation directly determine the overall shape and aesthetics of the fence after the wire mesh is tensioned. If the verticality deviation of the columns exceeds 3mm / m, the upper and lower spacing between adjacent columns may be inconsistent, leading to uneven stress on the mesh during tensioning, resulting in localized loosening or over-tightening. An elevation deviation exceeding 5mm will cause the barbed wire at the top of the columns to be out of sync, affecting the safety protection effect and appearance quality. After strong winds and heavy rains, the backfill soil may soften and settle due to rainwater soaking, and temporary supports may loosen in the wind and rain; therefore, a comprehensive inspection and confirmation are necessary to ensure safety.

[0045] More specifically, in this embodiment, during step S60, preparatory work for hoisting is first carried out. A dedicated crane operator checks the wire rope for broken strands or wear exceeding the scrap standard, and inspects the shackles and hooks for cracks or deformation. After confirming everything is in good condition, two lifting lugs are symmetrically welded at the top of the steel column, approximately 500mm from the pipe end, as lifting points. Wire ropes are threaded through these lugs and attached to the hook at the end of the excavator's boom. The excavator slowly lifts the steel column approximately 200mm off the ground, suspends it for 30 seconds to confirm even force distribution and component balance, and then slowly rotates it back above the pit. With manual assistance, the bottom of the steel column is aligned with the center of the pit, and the excavator slowly lowers the hook so that the bottom of the steel column rests on the concrete cushion at the bottom of the pit. Subsequently, a temporary support is erected on each of the four sides of the steel column. The temporary supports consist of 48... The system consists of 2.4mm steel pipes and fasteners. One end of each supporting steel pipe is temporarily fixed to the steel column using fasteners, while the other end is supported on a wooden pad on the ground. The angle between the support and the ground is controlled between 45 and 60 degrees. A laser level is set up near the steel column, and two laser levels are used to simultaneously observe the verticality of the steel column in two mutually perpendicular directions. The column is swayed in the desired direction by adjusting the length of the adjusting screws on the temporary supports until the verticality deviation in both directions is no greater than 3mm / m. Simultaneously, the elevation of the top of the column is measured with a level, and the elevation deviation is controlled within ±5mm by adjusting the thickness of the shims at the bottom of the column. After the verticality and elevation are adjusted, the fasteners of the temporary supports are tightened and locked. Backfill soil in layers around the bottom of the column, with each layer not exceeding 300mm in thickness. A small rammer is used to compact each layer until the backfill reaches the top elevation of the foundation. Backfilling work must be completed before the installation of the PVC-coated wire mesh. During backfilling, the vibration direction of the compactor should avoid the already constructed brick walls to prevent collisions that could cause displacement or cracks in the brick walls. After backfilling is completed, the verticality and elevation of the columns should be checked again using a laser level, and the check data should be recorded. Throughout the construction period, in the event of winds exceeding level six or heavy rain, hoisting and support operations must be stopped immediately. After the weather subsides, the safety officer and technicians should jointly check each column to ensure that the verticality deviation does not exceed the allowable range, check whether the fasteners of the temporary supports are loose, and check whether the support steel pipes are deformed. If any deviation exceeds the limit or the supports are loose, correction and reinforcement should be organized immediately.

[0046] In an embodiment of the present invention, in the step of building a brick wall between two adjacent steel columns, each process is completed and passes quality inspection before proceeding to the next process.

[0047] It should be noted that this embodiment further defines the quality control method for the brick wall construction process in step S70. Brick wall construction is an intermediate process between column installation and wire mesh tensioning. Its quality not only affects the safety and durability of the wall itself, but also directly relates to the reference surface for subsequent wire mesh installation and the adhesion of the decorative coating. Each process includes specific operational steps such as brick arrangement, mortar laying, brick pressing and positioning, mortar joint treatment, and wall surface cleaning.

[0048] Specifically, this embodiment implements a segmented acceptance system where each process undergoes quality inspection before proceeding to the next. This shifts the quality control checkpoint upstream, preventing problems from accumulating until final acceptance and causing extensive rework. In high-temperature environments, cement mortar sets faster, making it more susceptible to issues like incomplete mortar joints and poor adhesion between mortar and bricks if not handled properly. By inspecting each process step-by-step, problems can be identified and corrected before the mortar initially sets; for example, incomplete mortar joints can be immediately filled and compacted. This control method ensures that the quality of each layer of bricks is under control, thereby guaranteeing that the overall brick wall's strength, verticality, and flatness meet design requirements.

[0049] More specifically, in this embodiment, during step S70, the brick wall construction is carried out and inspected step by step according to the following procedures. The first procedure is brick arrangement. A horizontal line is drawn between adjacent steel columns, and bricks are laid out on the ground according to the brick wall thickness and hollow pattern requirements in the design drawings. The width of the brick joints and the cutting position of the bricks are determined, and the quality inspector checks the consistency between the arrangement plan and the design drawings. The second procedure is mortar laying. M10 cement mortar is used, with a laying thickness controlled between 10mm and 12mm and a laying length not exceeding 1.5 meters. The quality inspector checks whether the mortar mix ratio and consistency meet the requirements. The third procedure is brick pressing and positioning. Bricks are placed one by one according to the arrangement plan, and a rubber mallet is used to gently tap them to ensure close contact between the bricks and the mortar. The thickness of the horizontal joints is controlled to be 10mm ± 2mm, and the width of the vertical joints is controlled to be 10mm ± 2mm. The quality inspector uses a feeler gauge to check the thickness of the joints, and no less than 3 points are checked for each course of bricks. The fourth step is mortar joint treatment. Before the mortar initially sets, use a grouting tool to compact and smooth the mortar joints, ensuring a fullness of at least 80%. Through joints and false joints are strictly prohibited. Quality inspectors check the fullness and appearance of the mortar joints layer by layer. The fifth step is wall surface cleaning. After every three courses of bricks are laid, use a scraper to remove excess mortar squeezed out of the wall surface, and wipe the wall clean with a damp sponge. Quality inspectors check the cleanliness of the wall surface. After each step passes inspection, the quality inspectors sign the process inspection record sheet for confirmation before proceeding to the next step. After all brick walls are completed, a comprehensive inspection is conducted on the verticality, flatness, and mortar joint quality of the brick walls.

[0050] In an embodiment of the present invention, the step of applying prestress to the PVC-coated steel wire mesh using a tensioning device and tensioning the tensioned PVC-coated steel wire mesh between two adjacent steel columns includes: Step S810: Cut the PVC-coated steel wire mesh according to the dimensions of the fence, and leave a connection allowance during cutting; Step S820: Unfold the cut plastic-coated steel wire mesh from one end of the wall, and apply prestress to the plastic-coated steel wire mesh using a tensioning device for tensioning; Step S830: Use special clamps or binding wires to fix the tensioned plastic-coated steel wire mesh between two adjacent steel columns; In step S840, the surface of the fixed PVC-coated wire mesh remains flat and does not become loose or wrinkled. The mesh size of the PVC-coated wire mesh is uniform and consistent. The flatness error of the PVC-coated wire mesh is less than or equal to 3mm.

[0051] It should be noted that this embodiment further defines the cutting, tensioning, and fixing operation of the PVC-coated wire mesh in step S80. The connection allowance is the extra portion reserved beyond the theoretical size when cutting the wire mesh, used to wrap around the post or pass through the connector during fixing to ensure the strength of the connection. The special clamp is a metal connector specifically designed for connecting the wire mesh to the steel post; one end clamps the wire mesh edge, and the other end connects to the steel post via bolts or clips. The binding wire is a small-diameter annealed steel wire used to bind the wire mesh edge to the steel post or crossbar. Flatness error refers to the degree of deviation of the wire mesh surface from the ideal plane after tensioning and fixing, expressed in millimeters.

[0052] Specifically, this embodiment ensures that the PVC-coated wire mesh maintains a flat and taut state over a long period under high-temperature conditions through prestressing and precise fixing. PVC-coated wire mesh is a flexible material and naturally tends to sag. Without prestressing, the thermal expansion of the wires in the high-temperature environment of Oman would further exacerbate this sag, leading to wrinkles and sagging, affecting both protective function and aesthetics. Applying controllable prestress to the wire mesh using a tensioning device allows for tensile deformation within its elastic range. After installation and fixing, the wire mesh possesses a persistent recoil stress that counteracts high-temperature expansion and sag during long-term use. Allowing for connection allowance during cutting ensures sufficient wire length at the fixing end to wrap around the post or pass through the clamp, forming a reliable mechanical anchor. Flatness control after fixing is a key acceptance indicator; a flatness error of no more than 3mm means a smooth transition between adjacent mesh panels without localized unevenness.

[0053] More specifically, in this embodiment, when performing step S80, the clear distance between adjacent steel columns and the height from the top of the column to the ground are first measured using a measuring tape. The measured dimensions are compared with the design dimensions. Cutting lines are drawn on the coated wire mesh roll according to the measured dimensions, leaving a connection allowance of approximately 200mm outside the cutting lines. A portable cutting machine is used to cut the wire mesh along the cutting lines. During cutting, thin iron wires are temporarily tied to both sides of the cutting position to prevent the mesh wires from loosening. The cut wire mesh is then unfolded from one end of the wall and laid on the outer side between two adjacent steel columns. During the unfolding of the wire mesh, two workers are assigned to pull the wire mesh taut at both ends to keep the longitudinal wires of the mesh basically taut. The tensioning device is fixed to the installed steel columns. The clamps of the tensioning device hold the edge wires at the starting end of the wire mesh. The manual screw is slowly rotated to apply prestress. During the tensioning process, a tension meter is used to detect the tension value of the wire mesh. Tensioning is stopped when the tension reaches the design value. While maintaining tension, first fix the starting end of the wire mesh to the steel column using special clamps, with the clamp spacing at each fixing point not exceeding 300mm. Then, gradually move the tensioning device towards the free end of the wire mesh, applying prestress in sections and fixing them section by section. After fixing, loosen the clamps of the tensioning device and observe whether the surface of the wire mesh is flat. Use a 2-meter-long straightedge to measure the maximum gap between the straightedge and the wire mesh, checking at least 5 points across the entire wire mesh area. A maximum gap of no more than 3mm is considered acceptable for flatness. At the same time, check whether the mesh shape is uniform, visually observing the diagonal deviation of each mesh hole. For areas with unevenness or distorted holes, use special tools for fine-tuning. After the wire mesh is fixed, its edges should fit tightly against the flanges of the steel column, with no loosening or slippage at the fixing points.

[0054] In an embodiment of the present invention, the step of installing barbed wire on the top of the fence includes: Step S910: Install three barbed wires at the top of the wall according to the design spacing, fix the barbed wires through the steel posts, tighten the barbed wires so that the installation spacing of the barbed wires meets the design requirements, and the connection between the barbed wires and the steel posts is firm.

[0055] It should be noted that this embodiment further defines the barbed wire installation method in step S90. Barbed wire refers to a protective steel wire product with sharp spikes wound and fixed at certain intervals along a steel wire rope or a single steel wire. Its function is to form an obstacle at the top of the wall to prevent climbing and crossing. The design spacing refers to the horizontal distance between two adjacent barbed wires, and the distance between adjacent spikes on the same barbed wire, both determined according to the specific requirements of the design drawings. The three barbed wires are typically arranged parallel to each other longitudinally along the top of the post, with one wire directly above the top of the post, and the other two offset outwards at certain distances on either side of the top.

[0056] Specifically, this embodiment effectively ensures the safety and protection of the top of the fence by tightening the barbed wire and ensuring a secure connection between it and the steel posts. The protective effect of the barbed wire depends on its tension; if the barbed wire is slack, climbers can easily press it down or spread it, rendering it ineffective in preventing climbers from crossing. Fixing the barbed wire to the steel posts utilizes the high rigidity and stable burial depth of the posts, ensuring that the tension of the barbed wire is effectively transmitted to the foundation through the posts and will not be pulled off. The three barbed wires are arranged in a triangular or inverted triangular pattern in space, ensuring that any attempt to climb from any direction will first encounter the tips of the barbed wire, achieving comprehensive protective coverage.

[0057] More specifically, in this embodiment, when performing step S90, the installation positions of the barbed wires are first marked on the top of the steel columns according to the design drawings. The three barbed wires correspond to the top center point and the two offset points on both sides, respectively. The distance of the two offset points relative to the center point is controlled according to the requirements of the drawings. On the first steel column at the beginning of the wall, the ends of the three barbed wires are fixed to the preset mounting ears with wire rope clamps, with no less than three clamps at each end. Then, the barbed wires are unwound along the longitudinal direction of the wall, and the barbed wires are threaded into the reserved holes or slots on the top of each steel column while unwound. After reaching the steel column at the end of the wall, the ends of the three barbed wires are clamped with a tensioner and tightened one by one. During the tightening process, the tension value is detected with a tension meter, and tightening is stopped when the tension reaches the design value. While maintaining the tension, the ends are fixed to the mounting ears of the end steel column with wire rope clamps. After all three barbed wires are tensioned and fixed, use a measuring tape to check the spacing deviation between adjacent barbed wires. A deviation of no more than ±10mm is considered acceptable. Check whether the orientation of each barb tip on the barbed wire is consistent, and whether the barbs are firmly fixed without any loosening or rotation. Finally, visually inspect whether the three barbed wires at the top of the entire section of the wall are straight, of consistent height, and whether all connections between the barbed wires and the steel posts are securely tightened without any signs of slippage.

[0058] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformations made based on the technical concept of the present invention and the contents of the specification and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present invention.

Claims

1. A modular fabrication and installation method for a perimeter wall in a high-temperature and high-humidity environment, characterized in that, The modular fabrication and installation method for high-temperature and high-humidity environment fencing includes: BIM modeling was used to optimize the size and installation details of components, wind load simulation analysis was performed, and a prototype wall was fabricated to verify the process parameters. Precast concrete columns, steel columns, and PVC-coated wire mesh; The precast concrete columns, the steel columns, and the plastic-coated wire mesh were transported to the construction site, and the precast concrete columns and steel columns were stored separately in the hardened area. The construction site was laid out using surveying instruments, marking out the center line of the fence and the edge line of the foundation, and the layout results were verified. Excavate the foundation earthwork along the foundation edge line, and perform foundation treatment on the excavated base; The steel columns are modularly hoisted into the foundation pit using an excavator. Temporary supports are used to adjust the verticality of the steel columns. After the steel columns are adjusted into place, the soil is backfilled and the steel columns are fixed. A brick wall was built between two adjacent steel columns; The PVC-coated steel wire mesh is tensioned by applying prestress using a tensioning device, and the tensioned PVC-coated steel wire mesh is then fixed between two adjacent steel columns. Barbed wire was installed on the top of the fence; A decorative coating is applied to the surface of the brick wall.

2. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of using BIM modeling to optimize the dimensions and installation details of components, performing wind load simulation analysis, and fabricating a prototype wall to verify the process parameters include: The plastic-coated steel wire mesh was subjected to weather resistance tests in a simulated high temperature and high humidity environment. The precast concrete columns were subjected to strength tests. The connection nodes of the steel columns were subjected to wind load tests. The construction parameters were optimized based on the trial production results of the sample wall.

3. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps for fabricating precast concrete columns, steel columns, and PVC-coated wire mesh include: The steel pole is embedded into the customized mold and fixed. The exposed height of the steel pole is adjusted to meet the design requirements. The customized mold is poured with high-temperature and adaptable concrete. After curing until the concrete reaches more than 70% of its design strength, the mold is demolded to obtain the precast concrete column. Using 48 The steel column is made of 2.4mm steel pipe, and an anti-corrosion coating is applied to the surface of the steel column; Cut the PVC-coated steel wire mesh to the design dimensions and control the thickness of the PVC coating to meet the design requirements.

4. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of transporting the precast concrete columns, the steel columns, and the PVC-coated wire mesh to the construction site, and classifying and storing the precast concrete columns and steel columns in the hardened area, include: The PVC-coated steel wire mesh is transported in roll form, and is subjected to moisture-proof treatment and damage-proof packaging. The precast concrete columns and steel columns are sorted and stacked according to specifications in a flat, hardened storage area with drainage measures. The stacking height of the precast concrete columns and steel columns is less than or equal to 2 layers. The PVC-coated wire mesh is stored inside the sunshade and rainproof shed.

5. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of using measuring instruments to lay out the construction site, marking the center line of the fence and the edge line of the foundation, and verifying the laying out results include: The center line of the wall and the edge line of the foundation are laid out using a total station and a laser level, and the center line of the wall and the edge line of the foundation are marked with markers; The elevation and distance data are verified on-site and compared with the design drawings. Once confirmed to be correct, the process proceeds to the next step.

6. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of excavating foundation earthwork along the foundation edge and performing foundation treatment on the excavated base include: The foundation soil shall be excavated using a combination of mechanical excavation and manual trench cleaning. A 10cm to 20cm layer of subsoil shall be left for manual cleaning down to the bottom elevation of the cushion layer. Excavation depth shall not exceed the design bottom elevation. Remove the topsoil, plant roots, construction waste, and silt from the base. Place the base on the old soil layer or the compacted fill layer. Control the compaction coefficient of the foundation to be greater than or equal to 0.95 and the bearing capacity characteristic value of the foundation to be greater than or equal to 120 kPa. When pouring foundation concrete, a vibrator is used to compact it.

7. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of using an excavator to modularly hoist the steel column into the foundation pit, using temporary supports to adjust the verticality of the steel column, and backfilling and fixing the steel column after it is in place include: The steel column is lifted using an excavator. Before lifting, the integrity of the lifting equipment is checked, and lifting points are set on the top of the steel column. The steel column is placed in the foundation pit, using 48 The temporary support was erected using 2.4mm steel pipes; The verticality and installation elevation of the steel column were calibrated using a laser level. After the steel column is adjusted into place, backfill the soil and compact it. The backfilling is completed before the plastic-coated wire mesh is installed, and the backfill soil is prohibited from colliding with the brick wall that has been built during the backfilling process. Verify the verticality and installation elevation of the steel column. The verticality deviation of the steel column is less than or equal to 3mm / m, and the installation elevation deviation of the steel column is less than or equal to 5mm. After strong winds and heavy rain, conduct a comprehensive inspection of the verticality of the steel columns and the stability of the temporary supports.

8. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, In the step of building a brick wall between two adjacent steel columns, each process is completed and passes quality inspection before proceeding to the next process.

9. The modular fabrication and installation method for high-temperature and high-humidity environment fencing according to claim 1, characterized in that, The steps of applying prestress to the PVC-coated steel wire mesh using a tensioning device and fixing the tensioned PVC-coated steel wire mesh between two adjacent steel columns include: Cut the PVC-coated steel wire mesh to the dimensions of the fence, leaving a connection allowance during cutting; The cut plastic-coated steel wire mesh is unfolded from one end of the wall, and prestress is applied to the plastic-coated steel wire mesh using a tensioning device for tensioning. The tensioned plastic-coated steel wire mesh is fixed between two adjacent steel columns using special clamps or binding wires; The surface of the fixed PVC-coated wire mesh remains flat and does not become loose or wrinkled. The mesh openings of the PVC-coated wire mesh are uniform and consistent, and the flatness error of the PVC-coated wire mesh is less than or equal to 3mm.

10. The modular fabrication and installation method for a high-temperature and high-humidity environment fence according to any one of claims 1 to 9, characterized in that, The step of installing barbed wire on top of the fence includes: Three barbed wires are installed at the top of the fence according to the design spacing. The barbed wires are fixed through the steel posts and tightened to ensure that the installation spacing of the barbed wires meets the design requirements and that the connection between the barbed wires and the steel posts is firm.

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