The dry coal shed space frame at power plants is a large-span structural steel system used in thermal power stations for the enclosed storage of thermal coal. Typically utilizing bolted-ball or welded-ball nodes, it is assembled from Q235B or Q355B steel tubular members to form cylindrical shells, spherical shells, or tetrahedral space frames. This design facilitates column-free, expansive interior spaces and fully enclosed coal storage, while accommodating the operation of equipment such as bucket-wheel excavators and stacker-reclaimers.
Case Study Analysis:
1. Project Name: Shanxi Wanxinlong Raw Material Shed Spherical Space Frame Construction Project
2. Project Location: Wen Village, Dianshang Town, Lucheng District
3. Project Area: 8,514 m²
4. Project Cost: 4.17 million RMB
Space Frame Span: Single span of approximately 80 m
Space Frame Depth: 2.5 m
Column Spacing: 8 m
Steel Content: 50 kg/m²
Seismic Design Intensity: Grade 7
Designed Service Life: 50 years
Advantages: High spatial utilization efficiency; optimized design creates an obstruction-free working environment, providing unimpeded operational space for machinery and thereby enhancing coal turnover efficiency. Reduced steel content lowers costs associated with steel procurement and processing; the lightweight structural design also imposes lower tonnage requirements on hoisting equipment.
What are the core advantages of a dry coal shed space frame structure?
1. The space frame structure features a rational force distribution and high overall rigidity, endowing it with excellent seismic resistance. It is structurally safe and reliable, while simultaneously avoiding issues-such as stress concentration and local instability-that are prone to occur in traditional planar structures.
2. It requires a lower volume of steel and results in a lighter structure, thereby reducing costs. Furthermore, the reduced self-weight lowers the demands placed on the foundation and substructure.
3. It is capable of accommodating ultra-large spans, enabling coverage of areas ranging from 50m to 150m-or even greater distances.
Dry coal sheds at power plants must provide vast, unobstructed spaces to facilitate the operation of stacker-reclaimers and the efficient turnover of coal.
4. It offers high spatial utilization; through optimized design, it liberates barrier-free operational zones, providing machinery with unimpeded working space and thereby enhancing the efficiency of coal turnover.
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