Chile’s 8-magnitude earthquake-resistant steel structure winery construction plan
In response to the core needs of Chilean customers “8-level earthquake resistance + annual output value of 50 million”, Canglong Group tailored a steel portal frame structure construction plan for its winery project. Through precise structural design, material selection and functional zoning, it takes into account safety, production efficiency and long-term operational value, helping customers achieve the goal of high-value, high-reliability and high-expansion industrial facilities.
1. Earthquake resistance first
Chile is located in the Pacific Rim seismic belt, and 8-level earthquake resistance is the bottom line of the project. Canglong Group adopts the Q355B H-shaped steel portal frame structure based on the design principle of strong nodes and weak components. The yield strength of Q355B steel reaches 355MPa, which has both high strength and good ductility and can effectively absorb seismic energy. The portal frame is tightly connected to the foundation through the rigid column foot to form an overall anti-lateral displacement system. According to finite element analysis, the maximum displacement angle of the structure under a magnitude 8 earthquake (peak acceleration 0.3g) is only 1/500 (far below the standard limit of 1/200), ensuring that the main structure will not collapse in a major earthquake.
The key nodes are connected with friction-type high-strength bolts (8.8-grade M24 bolts). Compared with welding connections, bolt nodes have the advantages of being adjustable and easy to repair. If local looseness occurs after an earthquake, it can be quickly re-tightened with a torque wrench to avoid the time-consuming and structural damage of traditional welding repairs. At the same time, the ductility of bolted connections is better than welding, which can better dissipate energy during the release of earthquake energy and reduce the risk of structural damage.
2. Functional zoning
With a total length of 101 meters, a width of 26.6 meters and a height of 10.05 meters, Canglong Group aims to integrate production and storage. The 54 meters on the left are planned as the core production area of the winery, and the 47 meters on the right are designed as the finished product/raw material warehouse. The space is efficiently utilized through a reasonable column grid layout (column spacing 8 meters × 8 meters).
Production area: The floor height is 8.5 meters (from the ground to the bottom of the steel beam), which meets the installation height requirements of brewing equipment (such as fermentation tanks and distillation towers). The ground is hardened with C30 concrete (thickness 200mm), and the equipment foundation interface is reserved, taking into account the load-bearing and cleaning convenience of heavy equipment.
Warehouse area: The floor height is 9.5 meters (including a 2-meter-high brick wall maintenance structure), and a 1-meter height is reserved at the top for the layout of ventilation ducts and fire pipelines. The brick wall (MU15 autoclaved lime sand brick, M10 cement mortar masonry) not only meets the fire partition requirements (fire resistance limit 2.5 hours), but also improves the wall’s impact resistance through external mesh plastering treatment (anti-crack mortar + alkali-resistant mesh cloth) to protect the safety of stored goods.
3. Details control
All steel components are made of Q355B H-shaped steel (flange plate thickness 20mm, web thickness 12mm). After hot rolling, the factory completes the triple anti-corrosion treatment of shot blasting (Sa2.5 grade), epoxy zinc-rich primer (film thickness 80μm) and polyurethane topcoat (film thickness 50μm), ensuring a service life of more than 25 years in the high salt fog environment of the Chilean coast. All connections between steel components use M20-M24 high-strength bolts (hot-dip galvanized surface treatment), with gaskets and anti-loosening nuts to eliminate the risk of loosening due to vibration.
In response to the special needs of the winery, an openable ventilation skylight (made of aluminum alloy, opening angle 45°) is set on the top of the workshop, and the high side windows on the side wall (6 meters from the ground) form a natural ventilation and dehumidification system to reduce the humidity in the winemaking workshop (controlled below 60%) and reduce the risk of equipment corrosion. The ground reserves an equipment hoisting port (size 3m×3m, equipped with electric hoist track) to facilitate the installation of new winemaking equipment in the later stage and improve the space expandability.
4. Benefit implementation
This solution not only meets the 8-level earthquake resistance and production needs, but also provides support for the customer’s annual output value of 50 million through short construction period, low cost and easy maintenance.
Controllable construction period: 90% of the steel structure components are prefabricated in the factory (error ≤ 2mm), and only bolt connection and brick wall masonry are required on site. The total construction period is only 4 months (50% shorter than the concrete structure), helping customers to quickly put into production.
Cost optimization: Q355B steel has high strength and low consumption (15% steel saving compared to Q235), bolt connection reduces on-site welding costs (labor costs are reduced by 30%), and the overall construction cost is 18% lower than the traditional concrete frame.
Convenient operation and maintenance: Bolt nodes can be disassembled repeatedly, and there is no need to destroy the structure for later equipment upgrades or layout adjustments. The brick wall and steel structure are designed to be separated, and local repairs only need to deal with a single material, which greatly reduces the difficulty of maintenance.
From seismic calculation to space planning, from material selection to detail processing, Canglong Group has built a safe, reliable, efficient, and long-term operating steel structure winery for Chilean customers with the concept of technology adapting to needs and quality creating value. This is not only a building, but also the industrial cornerstone of the customer’s annual output value of 50 million.
