👉 Project location: Nigerian coast 👉 Project type: Mine warehouse (span 100 metres, length 125 metres) 1. Structural Design Span and Length: The mine warehouse has a span of 100 metres and a length of 125 metres, employing a large-span steel structure design to ensure structural stability and load-bearing capacity. It is recommended to use a steel truss structure or space frame structure to meet the large-span requirements and optimise material usage. The structural design must consider wind loads, seismic loads, and dynamic loads during the operation of the bucket wheel excavator. Foundation Design: Since the project is located by the sea, the foundation may be relatively soft. It is recommended to use deep foundation design (such as pile foundations) to ensure structural stability. Foundation construction must consider the impact of groundwater levels and saline-alkali environments, and foundation reinforcement should be carried out when necessa...
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Bolted Spherical Grid Structures in the Design of Large-Span Roof Structures
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Large-span roof structures play a significant role in modern architecture, particularly in sports venues, exhibition centres, and industrial plants. Bolted spherical grid structures, as an efficient spatial grid structure, have gained widespread application in large-span roof projects due to their lightweight design, high load-bearing capacity, and ease of construction.
Bolted ball grid structures consist of ball nodes and members connected by bolts to form a three-dimensional spatial load-bearing system. Their structural design features the following characteristics:
Lightweight and high load-bearing capacity: The members of bolted ball grid structures are typically made of steel pipes or round bars with small cross-sectional dimensions, resulting in a lightweight overall structure. However, through reasonable member arrangement and node design, they can withstand significant loads.
Convenient construction: The members and nodes of bolted ball grid structures are prefabricated components, requiring only assembly and connection on-site, thereby reducing welding work and improving construction efficiency.
High adaptability: Bolted ball grid structures are suitable for roof designs of various spans and shapes, meeting the functional requirements of different buildings.
In large-span roof designs, bolted ball grid structures are typically used in conjunction with purlins, roof panels, and other components to form a complete roof system. During design, factors such as load distribution, node stiffness, and member stability must be comprehensively considered to ensure structural safety and economic efficiency.
II. Typical Application Cases Abroad
Michigan Stadium, United States
The roof of Michigan Stadium features a double-layer bolted sphere grid structure with a span of 200 metres. Through optimised member layout and node design, this structure not only meets the load-bearing requirements of a large-span roof but also provides the building with a unique visual effect.
Michigan Stadium, United States
Düsseldorf Exhibition Centre, Germany
The roof of the Düsseldorf Exhibition Centre employs a single-layer bolted sphere truss structure with a span exceeding 150 metres. Through modular prefabrication and assembly techniques, the bolted sphere truss demonstrated exceptional efficiency during construction, significantly reducing the construction schedule.
Sapporo Snow Festival Main Venue, Japan
The roof of this building combines a bolted sphere grid structure with a membrane structure, spanning 100 metres. The bolted sphere grid structure provides a stable support system for the membrane structure, while optimised node design enhances the structure's seismic performance.
III. Future Development Trends
With the continuous advancement of construction technology, the application prospects of bolted ball grid structures in large-span roofs are becoming increasingly promising. In the future, their development trends will primarily manifest in the following areas:
Intelligent Design: Utilising BIM technology, finite element analysis, and other methods to achieve intelligent design and optimisation of bolted sphere truss systems, thereby enhancing structural economy and safety.
Modular Construction: Adopting modular prefabrication and assembly techniques to further improve the construction efficiency and quality of bolted sphere truss systems.
Green and Environmentally Friendly: Emphasising green and environmentally friendly practices in material selection and construction processes, using recyclable materials and energy-saving construction techniques to minimise environmental impact.
Bolted spherical grid structures, as an efficient spatial grid structure, have demonstrated unique advantages in large-span roof engineering projects abroad. Their flexible structural design, convenient construction, and strong load-bearing capacity can meet the dual demands of modern architecture for functionality and aesthetics. With the continuous advancement of technology, the application scope of bolted spherical grid structures will further expand, injecting new vitality into the development of the construction industry.
What Are The Architectural Features Of The Space Frame Fabrication? Buildings processed by space frame are a good form of construction, because the materials used are mainly metal, which have better toughness than other materials. This will not only help enhance the load-bearing capacity of the building itself, but also shorten the construction period. To reduce the difficulty of construction, let's talk about the characteristics of space frame production buildings： space frame 1. The components of space frame has good mechanical properties, and its stiffness and overall stability are better than those of general planar structures. 2. The space frame structure has certain regularity and is convenient for construction. There are a large number of same form components and nodes in the space frame structure, which brings convenience to factory production and structural installation, ensu res the quality of the project, acceler...
The development status of the space frame structure space frame structure has been developed greatly in the last 30 years, and has been widely used inside and outside. space frame structure plan arrangement is flexible, space shape is beautiful, convenient for building shape processing and decoration, decoration, can adapt to different span, different plane shape, different support conditions, different functional needs of the building. Especially in the roof structure of large and medium span, the space frame structure shows its superiority and is used in large number of large sports buildings, public buildings, industrial buildings, and also widely used in the roof of some small buildings, such as gas stations, toll stations, large canopies. In recent years, with the wide application of electronic computers and the development of computing technology, the design efficiency of the space frame structure has been greatly improved. The construction and i...
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