The Pacific Rim region gathers the world’s most active economies and faces the most severe natural challenges. Earthquake zones and typhoon paths highly overlap. From the Chilean Andes to the Japanese archipelago, from the Philippines to the Caribbean, coastal projects must simultaneously contend with two deadly threats: earthquakes and storms.
Traditional concrete buildings have obvious shortcomings exposed in this kind of environment. They are heavy in weight, have poor ductility, and are difficult to repair. Steel structures, especially steel frame systems optimized for earthquake and wind resistance, are becoming a rational choice for coastal areas.
Canglong Group’s Case Study in Earthquake-Prone Countries
Canglong Group has participated in several steel structure projects in high-intensity areas in Chile and Japan. After the 8.8-magnitude earthquake in Chile in 2010, the local seismic resistance requirements for buildings were comprehensively improved. In a high-rise office building project in the Port of Valparaíso, the Canglong team adopted a combined solution of flexible nodes and buckling restrained bracing (BRB) to allow the structure to unload force through node rotation and support energy dissipation under strong earthquakes, instead of resisting head-on. Post-earthquake simulations show that this design can control the interstory displacement angle within 60% of the specification limit, and there is no residual deformation of the main structure.
In a hospital expansion project in Hokkaido, Japan, Canglong further introduced viscous dampers. A device similar to a car shock absorber, installed at the diagonal braces or beam-column joints of a steel frame. When an earthquake strikes, the viscous liquid inside the damper generates shear resistance, converts vibration energy into heat energy, and greatly reduces the stress on the main structure. Actual measurement data shows that after the damper is installed, the structural acceleration response is reduced by about 35%-40%, effectively ensuring the safety of precision instruments and patients in the postoperative ward.
The common logic of these technologies is to allow the building to sway but not collapse during an earthquake. There is no need to dismantle the building after the earthquake. Only energy-consuming parts can be replaced to restore functionality. This is the resilience that Pacific Rim customers need most.
Wind-resistant upgrade: Steel frame to withstand Category 5 hurricanes
Another major challenge for coastal projects comes from typhoons and hurricanes. The wind pressure of a Category 5 hurricane in the Atlantic is strong enough to knock off lightweight roofs and tear apart non-structural components of concrete. The wind resistance advantages of steel frames are reflected in three levels:
High strength-to-weight ratio: The strength of steel is about 10 times that of ordinary concrete, but its weight is only 1/3 of the latter. Under the same bearing capacity, the steel frame is lighter in weight, transmits the horizontal wind load to the foundation more directly, and is less likely to overturn.
Ductile energy dissipation: Concrete is prone to brittle cracking under the reciprocating action of strong winds, while steel has good plasticity and can absorb wind vibration energy through elastic-plastic deformation. In a resort project in the Caribbean, Canglong adopted a wind-resistant optimized steel frame, encrypted the supports and strengthened the beam-column node areas, and successfully passed the wind tunnel test simulating a Category 5 hurricane (wind speed 260km/h).
Continuous force transmission path: The bolted/welded connections of the steel frame form reliable spatial integrity. Even if local components are overloaded, the load can be quickly redistributed to the surrounding structures to avoid continuous collapse.
Comparison with concrete: With the same wind resistance level, a concrete structure requires thicker walls and more steel bars, which not only increases its own weight and cost, but also prolongs the construction period. Steel structures are prefabricated in factories and assembled on-site. In Southeast Asia and the Caribbean, where typhoons are frequent, the main body can be sealed before the hurricane season, significantly reducing construction risks.
Coastal development cannot wait any longer
As the global climate warms, the intensity of hurricanes and typhoons is on the rise. In the past ten years, the Caribbean has been hit by many Category 5 hurricanes such as Maria and Irma. A large number of concrete building roofs were torn off and infill walls collapsed. The Philippines and Vietnam in Southeast Asia face about 20 tropical cyclones every year. Choosing a steel structure is not an “upgrade”, but a bottom-line strategy in an environment where extreme weather occurs frequently.
Conclusion
Based on practical experience in Chile, the Philippines and other regions, Canglong Group integrates flexible nodes, dampers, and wind-resistant optimized steel frames to provide coastal customers with full-cycle services from design to delivery. Whether it is the earthquake zone in South America or the typhoon corridor in Southeast Asia, steel structures can protect your assets and safety in a lighter, stronger, and tougher way.
Send us the inquiry form