{"id":65,"date":"2025-06-27T04:00:09","date_gmt":"2025-06-27T04:00:09","guid":{"rendered":"https:\/\/www.purunspaceframe.com\/?post_type=solution&p=65"},"modified":"2025-06-28T08:09:37","modified_gmt":"2025-06-28T08:09:37","slug":"roof-panels","status":"publish","type":"solution","link":"https:\/\/www.purunspaceframe.com\/cn\/solution\/roof-panels\/","title":{"rendered":"Super-Large Span Stability"},"content":{"rendered":"\n

Super-Large Span Stability Solution: Controlling 150m+ Deflection with Prestressed Cable Net and Double-Layer Truss System<\/strong><\/p>\n\n\n\n

In modern architectural engineering, achieving structural stability over super-large spans\u2014particularly those exceeding 150 meters\u2014is a significant challenge. Whether it\u2019s stadiums, exhibition centers, or transportation hubs, the demand for expansive, column-free interior spaces continues to grow. However, such designs face a common pain point: controlling deflection and deformation<\/strong> to maintain both safety and performance over time.<\/p>\n\n\n\n

The Challenge: 150m+ Span Under Deflection Control<\/strong><\/strong><\/h3>\n\n\n\n

As spans exceed 150 meters, conventional structural systems such as single-layer space frames or standard trusses often struggle to maintain serviceability. Excessive sagging, lateral displacement, and dynamic vibration under live loads and environmental factors (wind, snow, seismic activity) can severely compromise the structure\u2019s integrity, aesthetics, and user safety. These issues demand advanced structural engineering solutions to achieve both strength and stiffness without excessive material use.<\/p>\n\n\n\n

The Solution: Prestressed Cable Net + Double-Layer Orthogonal Truss Composite System<\/strong><\/strong><\/h3>\n\n\n\n

To address these challenges, a composite structural system<\/strong> that integrates a prestressed cable net<\/strong> with a double-layer orthogonal truss<\/strong> offers a highly efficient and stable solution.<\/p>\n\n\n\n

1. Prestressed Cable Net System<\/strong><\/strong><\/h4>\n\n\n\n

A prestressed cable net acts as a tension-based support structure that effectively redistributes loads across the entire span. Cables are anchored at strategic points around the perimeter and tensioned precisely to pre-compress the structure. This system achieves several benefits:<\/p>\n\n\n\n

Minimizes vertical deflection<\/strong> by counteracting gravitational loads with upward cable force.<\/p>\n\n\n\n

Lightweight yet strong<\/strong>, reducing dead load while enhancing flexibility.<\/p>\n\n\n\n

Resilient against dynamic loads<\/strong>, especially wind and seismic forces.<\/p>\n\n\n\n

Efficient load transfer<\/strong>, spreading concentrated forces to multiple support points.<\/p>\n\n\n\n

2. Double-Layer Orthogonal Truss<\/strong><\/strong><\/h4>\n\n\n\n

The cable net system is complemented by a double-layer orthogonal truss<\/strong>, which provides rigid support in both longitudinal and transverse directions. This structural grid is composed of upper and lower chords connected by vertical and diagonal members, forming a stiff 3D lattice:<\/p>\n\n\n\n

Enhances torsional resistance<\/strong> and overall stiffness.<\/p>\n\n\n\n

Reduces member length<\/strong>, minimizing buckling and increasing stability.<\/p>\n\n\n\n

Supports complex roofing and architectural loads<\/strong>, including MEP systems and cladding.<\/p>\n\n\n\n

Distributes loads uniformly<\/strong>, improving structural efficiency over large spans.<\/p>\n\n\n\n

3. Composite Integration Advantages<\/strong><\/strong><\/h4>\n\n\n\n

When combined, the prestressed cable net and double-layer truss form a hybrid tension-compression system<\/strong>. This synergy delivers exceptional performance:<\/p>\n\n\n\n

Active + Passive Load Sharing<\/strong>: Prestressed elements actively reduce deformation, while the rigid truss provides passive load resistance.<\/p>\n\n\n\n

Span Flexibility<\/strong>: Ideal for 150m\u2013300m spans with minimal intermediate supports.<\/p>\n\n\n\n

Aesthetic and functional versatility<\/strong>: Supports curved and freeform roofs while maintaining structural integrity.<\/p>\n\n\n\n

Applications in Real Projects<\/strong><\/strong><\/h3>\n\n\n\n

This system has been successfully adopted in landmark projects such as:<\/p>\n\n\n\n

Olympic stadiums<\/strong> with iconic roof structures.<\/p>\n\n\n\n

Airport terminals<\/strong> requiring open and column-free areas.<\/p>\n\n\n\n

Mega exhibition halls<\/strong> where both height and span control are crucial.<\/p>\n\n\n\n

Its modular design and prefabrication potential also reduce on-site construction time and costs\u2014key advantages in today\u2019s fast-paced construction environment.<\/p>\n","protected":false},"excerpt":{"rendered":"

Super-Large Span Stability Solution: Controlling 150m+ Deflection with Prestressed Cable Net and Double-Layer Truss System In modern architectural engineering, achieving structural stability over super-large spans\u2014particularly those exceeding 150 meters\u2014is a significant challenge. Whether it\u2019s stadiums, exhibition centers, or transportation hubs, the demand for expansive, column-free interior spaces continues to grow. However, such designs face a […]<\/p>\n","protected":false},"featured_media":67,"template":"","meta":{"inline_featured_image":false},"class_list":["post-65","solution","type-solution","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nSuper-Large Span Stability - PURUN Steel Structure<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.purunspaceframe.com\/cn\/solution\/roof-panels\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Super-Large Span Stability - PURUN Steel Structure\" \/>\n<meta property=\"og:description\" content=\"Super-Large Span Stability Solution: Controlling 150m+ Deflection with Prestressed Cable Net and Double-Layer Truss System In modern architectural engineering, achieving structural stability over super-large spans\u2014particularly those exceeding 150 meters\u2014is a significant challenge. 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