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Seismic Design Requirements for Steel Frame Structure Buildings

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Steel structures constructed in seismic zones must meet the following design requirements: 1. For seismic fortification levels of 7 or higher, horizontal bracing should be installed around the perimeter sections of the truss within its support plane. Theoretical calculations indicate that horizontal bracing enhances the truss's lateral seismic performance. For perimeter-supported trusses, three types of chord member configurations exist for the bracing plane: (1) Orthogonal-orthogonal type: Diagonal members are installed within the peripheral grid to form a closed system. (2) Orthogonal-oblique type: Horizontal members are arranged along the boundary to form a closed system. (3) Triaxial type: The support plane itself is composed of geometrically stable triangles, thus requiring no additional bracing. 2. The slenderness ratio of members within the peripheral 2–3 grid zones shall not exceed 180. This is because the chord members along the perimeter of the space frame experience rel...
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Sustainable Construction and Eco-Friendly Materials

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As global climate change and resource scarcity become increasingly pressing issues, the application of sustainable construction and eco-friendly materials has emerged as a critical focus in the building industry. Steel space  structures , as an environmentally friendly and highly efficient building material, are contributing significantly to the advancement of green architecture. 1. Recyclability of Steel Space Structures The primary material in steel space structures is steel, which is a recyclable resource. Compared to traditional building materials like concrete, steel space  structures  can be easily recycled and reused after building demolition. This reduces construction waste generation and lowers consumption of natural resources. This recyclable nature gives steel space  structures  a significant role in green construction. 2. Energy Conservation and Efficiency The efficient design of steel space  structures  optimizes a building's energy usage....
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What are the installation methods for space structures?

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  The installation method for space structures   should be determined comprehensively based on the type, stress, and structural characteristics of the structure, ensuring quality and safety while considering progress, economy, and on-site technical conditions. The following methods can be used for the installation of space structures : 1. High-altitude assembly method: Suitable for various types of space structures   assembled with full supports, especially suitable for structures with non-welded connections such as bolted connections and pin connections. Depending on the structural characteristics, cantilever assembly methods with fewer supports can be selected: inward expansion method (cantilever assembly from the side supports to the center) and outward expansion method (cantilever assembly from the center to the side supports). 2. Segment or block installation method: Suitable for space structures where the stiffness and stress state of the structure change little af...
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Can Space structure fabrication achieve rapid manufacturing?

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  Space structure  fabrication can achieve rapid manufacturing. This is primarily due to the characteristics of its production method. The manufacturing process for Space structure s typically occurs in factories, where semi-finished products are produced and then transported to construction sites for installation. Therefore, its production process differs from the typical production methods of general construction projects. Specifically, the rapid manufacturing of Space structure  fabrication is mainly attributable to the following factors: 1. Factory Prefabrication: Components are manufactured in factories, enabling centralized resource allocation for batch production and enhancing efficiency. 2. Modular Design: Space structure  can be designed modularly, breaking down the entire structure into standardized sections. This approach significantly reduces on-site installation time, as modules are prefabricated in factories and require only rapid assembly upon delivery...
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Rust Removal Methods for Steel space structures

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  The cross-sections of steel space frame components should be determined based on compressive strength and reliability calculations. To reduce the calculated length of compression members and improve reliability, measures such as adding sub-compression members and support frames can be adopted.   The connection points of plate-shaped spherical space structures   and two-shell spherical space structures   made of stainless steel mainly include cross-plate connection points, welded hollow sphere connection points, and anchor bolt sphere connection points. Cross-plate connection points are suitable for steel space structures   with channel steel components; the connection between the component and the connection plate is achieved by welding or high-strength bolts. Hollow sphere connection points and anchor bolt sphere connection points are suitable for steel space structures   with seamless steel pipe components. The connection points of single-shell spheric...
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Applications of Structural Glass and Innovative Technologies

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  Glass has emerged as a critical structural material thanks to breakthroughs in modern materials science and engineering. No longer merely a traditional fragile item, it now possesses remarkable strength, safety, and design potential. Below are the reasons glass can serve as structural components, along with some astonishing innovative applications. 1. Key Reasons Glass Becomes Structural (1) High-Strength Processing Technologies: Through tempering (thermal strengthening) and chemical strengthening, a powerful compressive stress layer forms on the glass surface, making its impact and bending strength several times higher than ordinary glass. Even when broken, it shatters into small particles with relatively blunt edges, reducing injury risk. (2) Composite Structures—Laminated Glass: This is the core of structural glass. Two or more glass layers are bonded under high temperature and pressure with tough PVB (polyvinyl butyral) or SGP (ion-exchange interlayer) film. Even if shattered...
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Efficient Application of Spatial Structures in Airports and Transportation Hubs

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 As gateways to cities, airports and transportation hubs must simultaneously meet diverse demands for ultra-large span spaces, complex curved surface designs, and intelligent operational management. With their green, low-carbon, and modular technical characteristics, space frame structures have emerged as the ideal solution for such transportation facilities, demonstrating irreplaceable advantages in enhancing functionality and intelligence. 1. Functional Requirements and Technical Adaptation Modern airport and transportation hub designs confront three core challenges: (1) Creating column-free spaces spanning hundreds of meters to accommodate tens of thousands of passengers during peak hours; (2) Integrating complex electromechanical systems like baggage sorting and rail transit installations; (3) Ensuring long-term durability and operational safety. Space structures effortlessly span over 150 meters while weighing only one-third of concrete structures, significantly reducing found...
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