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Withstanding 260km/h Typhoons! The Robust Construction Solution for the Coal Bunker of Kalakala Power Plant in the Philippines

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Project Challenges: Double Impact of Typhoons and Earthquakes The coal storage bunker of Power Plant in the Philippines has been facing tests from extreme natural conditions since the planning stage: Climate Challenge : Located in a super typhoon zone with wind speeds of up to 260 kilometers per hour, it withstands fierce storms and heavy rains every year. Geological Threat : Situated in a high seismic intensity zone with Z=0.4, the structural stability must be absolutely guaranteed. Cost Pressure : The client requires strict control over overseas construction costs while ensuring safety, and also demands controllable construction periods. Ultra-Large Scale : With a total height of 48.675 meters and a foundation height of 3.0 meters, the long-span dome design poses a great challenge to structural strength for industrial projects. Solutions: Comprehensive Upgrades from Design to Materials Targeting these pain points, our overseas engineering team has tailor-made a combined solu...
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What are the options for building a mosque for 5,000 people in Saudi Arabia?

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I. Design codes and loading requirements

💖1. Saudi Building Code (SBC 301) Core Parameters

Seismic design: according to Class II site category, seismic acceleration of 0.25g, seismic force calculation using the equivalent lateral force method, the main structure displacement angle limit of 1/200.

Wind load: basic wind pressure is 0.75kN/m² (100-year return period), equivalent wind pressure is 1.2kN/m² after considering height coefficient, local wind suction coefficient is 1.5.

Snow load: reference to the historical data of Mecca area, the additional roof load is calculated as 0.5kN/m².

💖2. Functional space indicators

1.5000 people worship space needs main hall net area ≥3500m² (calculated at 0.7m²/person).

2.suggests a 45m x 80m rectangular plan, with a central dome 30m in diameter, flanked by wavy vaults.

II. Specialised disaster-resistant design 

    💖1. Wind-resistant design

1. Installation of deflector plate (angle 25°) in the gable to reduce vortex vibration.

        2. Experimentally verified by Xuzhou Sufang Wind Tunnel: the wind pressure                  coefficient is reduced by 37% when the wind angle is 45°.


💖2. Seismic construction

1. Adopt double lateral force-resisting system: central dome as rigid frame + peripheral arch as articulated support

2. Viscous dampers (damping coefficient C=2500kN-s/m) are set up at 1/4 of the span.

III.Recommended technology mix programmes

💖body structure:Single-layer mesh shell + space truss arch on both sides
هيكل الجسم: غلاف شبكي أحادي الطبقة + قوس دعامة فراغي على كلا الجانبين

💖protective structure:Aluminium-magnesium-manganese panels with vertical locking edges + photovoltaic
هيكل واقي: ألواح من الألومنيوم والمغنيسيوم والمنغنيز مع حواف قفل عمودية + خلايا كهروضوئية

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Classification of steel structure nodes

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