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what is the fabric building/hoop building
A fabric building is a type of structure that uses fabric, usually made of durable materials like polyethylene, PVC, or other
synthetic textiles, as its primary exterior covering. These buildings can be used for a variety of applications, including
agricultural storage, industrial facilities, sports complexes, and event spaces.
Key Features of Fabric Buildings:
1. Structure: Fabric buildings typically have a frame made of steel, aluminum, or other materials, which supports the fabric
covering. The design can be temporary or permanent, depending on the intended use.

2. Lightweight: The materials used in fabric buildings are generally lighter than traditional building materials, making them
easier to transport and install.

3. Versatile Designs: Fabric buildings can be customized in size, shape, and layout to fit specific needs, making them suitable
for a wide range of functions.

4. Natural Lighting: Many fabric structures allow for natural light to enter, reducing the need for artificial lighting and
creating a more pleasant environment.

5. Cost-Effective: They can be more affordable to construct and maintain than traditional buildings, particularly for large
spaces.




Advantages of Fabric Buildings:

1. Quick Installation: Fabric buildings can often be erected in a shorter time frame compared to conventional structures, making them ideal for urgent needs.
2. Energy Efficiency: The insulation properties of certain fabric materials can help maintain temperature, potentially reducing heating and cooling costs.
3. Durability: High-quality fabric can withstand different weather conditions, including wind, rain, and snow, depending on the design and construction.
4. Flexibility: Fabric buildings can be designed to be demountable, allowing for relocation or reconfiguration as needs change.
5. Low Maintenance: These structures typically require less maintenance than traditional buildings, and the materials are
resistant to corrosion.
6. Sustainability: Many fabric buildings can be designed with eco-friendly materials and practices in mind, contributing to
sustainable construction efforts.
7. Enhanced Airflow: The design often promotes better ventilation, which can be beneficial for certain applications, such as agricultural uses.

Applications of Fabric Buildings:
* Agricultural Use: Storage for hay, equipment, and livestock shelters.
* Industrial Use: Warehousing, manufacturing, and workshop spaces.
* Recreational Use: Sports facilities, gymnasiums, and event venues.
* Commercial Use: Retail spaces, showrooms, and temporary structures for events.

Overall, fabric buildings offer a versatile and efficient solution for a wide range of applications, combining functionality with cost-effectiveness.






Analyzing Fabric Structures with 3D3S Software
3D3S is a specialized software tool used for the analysis and design of structures, including fabric structures. Here’s a
step-by-step guide on how to analyze fabric structures using the 3D3S software:
Step-by-Step Analysis Process
1. Model Creation:
* Define Geometry: Start by creating the 3D model of the fabric structure. This can include defining the overall shape,
dimensions, and layout of the fabric cover and structural frame.
* Input Nodes and Elements: Specify points (nodes) and connect them with elements to represent the fabric and supporting framework. For fabric structures, this often involves tensioned membrane elements.

2. Material Properties:
* Assign Materials: Define the properties of the materials used in the structure: * Fabric Material: Enter parameters such as tensile strength, elasticity, and thermal properties.
* Frame Material: Specify the properties of the structural frame materials (e.g., steel or aluminum).
3. Load Definitions:
* Dead Loads: Input the self-weight of the fabric and the supporting framework.
* Live Loads: Include other loads that might act on the structure, such as occupancy loads or equipment.
* Environmental Loads: Apply relevant loads such as: * Snow Loads: Based on local building codes and snow accumulation data.
* Wind Loads: Consider wind speed and direction, applying appropriate coefficients based on the structure's geometry.

4. Boundary Conditions:
* Support Conditions: Define how the structure is supported. This may include fixed, pinned, or sliding supports at various points.
* Tensioning: If applicable, specify tensioning conditions for the fabric, as tension is critical for its structural
performance.

5. Meshing:
* Finite Element Meshing: If the software requires it, generate a finite element mesh for the model. This divides the
structure into smaller elements for analysis.
* Element Types: Choose appropriate element types for fabric (e.g., membrane elements) and the supporting framework (e.g.,
beam or shell elements).

6. Set Analysis Parameters:
* Static or Dynamic Analysis: Choose the type of analysis you want to perform. Most fabric structures will undergo static
analysis, but dynamic analysis may be necessary for certain conditions (e.g., wind loading).
* Load Combinations: Set up load combinations according to relevant design codes to evaluate the worst-case scenarios.

7. Run the Analysis:
* Execute Calculation: Start the analysis process. The software will compute how the fabric structure behaves under the
applied loads and conditions.
* Monitor Progress: Check for any errors or warnings during the analysis run.
8. Results Interpretation:
* Displacement Analysis: Assess the displacement results to ensure they are within acceptable limits.
* Stress Distribution: Analyze the stress results to identify areas of high stress or potential failure points.
* Support Reactions: View the reactions at the supports to ensure they are manageable and within the design limits.

9. Optimization:
* Modify Design: If the results indicate issues (e.g., excessive deflection or stress), make design changes. This may
involve adjusting the geometry, selecting different materials, or changing the tensioning system.
* Re-run Analysis: After modifications, re-run the analysis to confirm improvements.

10. Documentation:
* Generate Reports: Compile a detailed report summarizing the analysis process, findings, and any design recommendations.
* Visual Outputs: Include visualizations such as stress contour plots, displacement diagrams, and load path diagrams to effectively communicate results.







Hot galvanizing is a process used to protect steel from corrosion by coating it with a layer of zinc. This is achieved by
immersing the steel in molten zinc at a temperature of around 450°C (842°F). The zinc reacts with the steel to form a series of
zinc-iron alloy layers, providing a durable and protective coating.
Advantages of Hot Galvanized Steel
1. Corrosion Resistance: The zinc coating provides excellent protection against rust and corrosion, extending the lifespan of steel structures, particularly in harsh environments.
2. Durability: Hot galvanized coatings are tough and resilient, able to withstand mechanical damage and environmental stressors.
3. Maintenance-Free: Once galvanized, steel components require little to no maintenance over their lifespan, reducing long-term costs.
4. Cost-Effective: While the initial cost may be higher than untreated steel, the long-term savings from reduced maintenance and longer service life can make hot galvanized steel more economical.
5. Environmental Protection: The process is environmentally friendly, as the zinc used is recyclable, and the coating process does not produce harmful byproducts.
6. Adhesion: The metallurgical bond between the zinc and steel provides a strong, long-lasting coating that adheres well to the base metal.
7. Aesthetic Appeal: Hot galvanized steel typically has a clean and attractive finish, making it suitable for visible
applications.






Hoop buildings, also known as hoop structures or fabric buildings, are versatile structures commonly used for agricultural,
industrial, and recreational purposes. They are characterized by their curved frames and fabric covers, which allow for efficient use of space and quick construction.

While there is no universally standard size for hoop buildings, they typically come in a range of dimensions based on their
intended application. Here are some common standard sizes and configurations:
Common Widths
* 20 to 30 feet (6 to 9 meters): Suitable for small agricultural or storage applications.
* 40 to 60 feet (12 to 18 meters): Common for larger storage, workshops, or commercial uses.
* 80 to 100 feet (24 to 30 meters): Often used for larger agricultural needs, such as equipment storage or livestock housing.

Lengths
* Variable Lengths: Hoop buildings can be constructed in various lengths, often starting from 20 feet (6 meters) and extending to
over 200 feet (61 meters) or more, depending on user requirements.
* Modular Sections: Many manufacturers offer hoop buildings that can be extended in modular sections, allowing for customization based on specific needs.

Heights
* Side Heights: Typically range from 10 to 16 feet (3 to 5 meters) for agricultural buildings. Taller side heights (up to 20 feet
or more) may be used for equipment storage or industrial applications.
* Peak Heights: The peak height of hoop buildings can vary significantly based on the width and design, often reaching 12 to 24
feet (3.5 to 7 meters) or even higher for larger structures.

Customization
* Customized Sizes: Many manufacturers provide customized solutions, allowing for specific dimensions based on the intended use,
local building codes, and user preferences.
* Additional Features: Options such as end walls, doors, ventilation systems, and insulation can also affect the overall
dimensions and design of the building.








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