LF space frame

All kinds of structures that span more than 60 meters can be called large-span space frame   structures.  The commonly used large-span space frame structure forms include folding plate structure, shell structure, space frame structure, suspension cable structure, aeration structure, tent tension structure, etc. The truss roof structure is a kind of large span roof structure which is widely used. The structure of the grid has strong integrity, good stability, large space stiffness and good anti-earthquake performance.  The space frame is small in height, and can be assembled into a long-span building by using smaller rod members, thus effectively utilizing the building space. The large span grid structure suitable for industrial production can be divided into two types: plate grid structure and shell grid structure, it can adapt to various plane shapes such as circle, square and polygon. Plate grid structure is usually double layer, shell - shaped grid has a single - layer and double -

  The installation method of space frame structure should be based on the type, force and structural characteristics of the structure , under the premise of ensuring quality and safety, determined in combination with schedule, economy and technical conditions in construction site. The following methods can be used for the installation of space frame structure: 1. High altitude bulk method: suitable for all types of space truss structures with full support assembly , especially suitable for bolt connection, pin shaft connection and other non-welded connection structure. The construction method of cantilever assembly with fewer supports can be selected according to the structure characteristics: Inner expansion method (cantilever assembly from the side support to the center), outer expansion method (cantilever assembly from the center to the side support) 2. Bar or block installation method: i t is suitable for the space frame  structure with less change of stiffness and stress conditio

  1 . T he space frame seismic support ability of a universal rotating and bearing, and it can satisfy the requirements of transfer, rotation and movement of reaction by different loads of superstructure. I t also can ensure that the reaction and resultant force are concentrated, clear, secure and reliable. 2 . I f upper & lower structures are not damaged, seismic support can prevent the structure collapsing and avoid disasters, when huge random earthquake happens. I t is especially suitable for the high-seismic intensity areas and it has excellent seismic performance. 3 . T he static stiffness of seismic support is strong, even under the heavy self-weight and inertia of trains and large cars, the support of space frame only result slightly deformed. I t can ensure cars and trains work safely and smoothly. LF is a professional manufacturer and engineering company for space frame and steel structure projects.Do you have a construction project we can help with? We are always ready t

  There are many factors that need to be considered in the design of a space frame  structure , not only structural mechanical properties, but also social, environmental, technical and many other aspects. Generally, the main factors to be considered in the design of the space frame structure are the requirements of the owner, building function, cost, construction and structure. The mechanical p roperty  requirement is the core content of the design of space frame structure, and the owner's requirement, building function, cost, construction, structure and other aspects are also the indispensable important content of the design of space frame structure. On the one hand, these factors themselves are the factors that must be considered in the structural design, such as the structure must meet the requirements of the owner, can achieve the required building function, good economy, conducive to the construction of the structure, the consistency between the structure and the theoretical m

A gas station is mainly a place to provide fuel for motor vehicles. Its structural design is not luxurious, but it must be eye-catching and have a strong affinity for customers. For gas station engineering with space frame , its thickness, support column thickness, appearance and color must be comprehensively considered. The shape of the space frame  gas station is usually very neat and simple.The square ceiling and columns constitute the main body of the structure.The perimeter of the ceiling is generally decorated with aluminum-plastic panels and inkjet cloth. The upper plane is generally covered with color steel plates, and the lower plane is equipped with lighting equipment. It is not necessary to make the ceiling. A luminum gussets are generally used  as ceiling .The space frame structure uses a small amount of steel, and the rods are pre-produced in the factory, which is convenient for installation and has short construction time.It is very suitable for gas station projects that

  1.The maintenance of space frame includes anti-rust treatment of steel structure In the production stage and anti-rust treatment after assembly. 2.Steel pipe and ball are not easy to communicate with the atmosphere  when c onnect ed  welding   ball ,   The inner wall of newly rolled steel pipe   need'nt derusted , It can be painted directly .   However, the inner and outer walls of old steel pipes should be derusted carefully and painted with antirust paint 3.Bolt ball and steel pipe are connected with atmosphere, especially the rod tie. The steel pipe is easy to deform after tension, and result cracking phenomenon. in moist areas, high strength bolts or steel pipes may absorb water vapor, which is very unfavorable for high strength bolts, Anti-rust treatment must be strengthened. 4.When the load of space frame structure reaches the limit, Fill all the spare screw holes and joints with putty and apply antirust paint, especially for the supporting part and each joint, to ensure t

  In the space frame structure, the joints connect members and transfer roof and crane loads, the grid is also part of the space bar system, and there are at least 6 or as many as 13 bars connected to a node. This makes node design more difficult. The number of nodes in the space frame is large, and the amount of steel used by the nodes accounts for 1/5~1/4 of the total amount of steel used by the whole space frame members. The reasonable design of nodes is directly related to the safety degree, fabrication and installation, project schedule, steel quantity index and project cost. Node design is one of the most important steps in space frame  design The node structure of the space frame  should meet the following requirements : (1)  Reasonable force, clear transmission force, be sure to make the node structure and the calculation assumptions conformed  as much as possible, make the node safe and reliable ; (2)  Ensure that the junction bar intersects at one point and no additional ben

  What are the factors will effect the cost of space frame structure installation ？ 1. The node form of the space  frame : the most commonly used node form nowadays is the welding ball space  frame and the bolt ball space frame. In general, the installation cost of the welding ball ]space  frame is higher than the bolt ball  type . 2. Grid size: The larger the grid size, the lower the installation cost; 3. Number of component specifications: t he more quantity of the specification , the higher installation cost; 4. Elevation: The higher the elevation, the higher the installation cost; 5. Site conditions: If the site conditions are good, tower cranes, car cranes and other lifting equipment can achieve full coverage of the grid, then the general installation cost is lower; 6. The complexity of the appearance of the space frame ; t he more complex the grid , the higher the installation cost; 7. The span of the grid and the width of the column: obviously, the larger the span and width are,

  The main application types of space frame structure are triangular cone and quadrangular pyramid, Due to  the strong stability of the two kinds of geometric figures, the two systems has gradually formed during the process of long-term design and use. Considering from the material saving, the amount of material used for slanting quadrangle cone is the least, secondly is the amount of material used for positive quadrangle cone. When selecting the type of space frame structure, the   specific load should be considered first.  The characteristics of each structure are different, and the specific load it can bear varies greatly. In the specific design process, we also need to make scientific use of the performance of space frame nodes , calculate exactly for the stress of the network frame node, make the space frame structure design more reasonable, thus save the cost of materials. LF is a professional manufacturer and engineering company for space frame and steel structure projects.Do y

  The space frame  is a spatial structure formed by connecting multiple rods through nodes in a certain grid form. The basic units that make up the space frame  include triangular pyramids, triangular prisms, cubes, truncated quadrangular pyramids, etc. These basic units can be combined into a flat-shaped triangle, quadrilateral, hexagon, circle or any other shape. The space  structure has the advantages of space stress, light weight, high rigidity, good seismic performance, etc.; it is suitable for the roof structure of  gymnasium, swimming pool, toll station, high-speed railway station, stadium canopy, hangar, two-way steel grid structure workshop with large column spacing. LF is a professional manufacturer and engineering company for space frame and steel structure projects.Do you have a construction project we can help with? We are always ready to help you!Website: www.lfspaceframe.com  

  一 . Common quality problems of   space frame (1) Bending deformation or partial fracture of the rod; (2) The connection of rod sealing plate or cone welding seam is broken; (3) Deformation or fracture of nodes; (4) The welding seam is not full or has bubbles, slag inclusions and micro cracks exceeding the specified standards; (5) The high-strength bolt is broken or pulled out from the ball joint; (6) The rod parts touch at the node, and when the upper string support, the support abdominal rod collides with the support structure; (7) Displacement of support node; (8) The deflection is too large, exceeding 1.15 times of the corresponding design value specified in the design. 二 . The main reason 1 . Design reasons (1) Unreasonable selection of structural form, unreasonable matching of member cross-sections, ignoring the effects of initial bending, initial eccentricity and secondary response of members, under-calculation and omission of loads during design, or improper load combination;

  After the installation method of the space frame  structure is determined, check the reaction force of each lifting point, vertical displacement, internal force of the bar, stability of the supporting column during lifting or jacking, and horizontal thrust of the space frame  structure under wind load, and take temporary reinforcement measures when necessary.When the space frame  structure is divided into bars, blocks or cantilever installation, the corresponding construction conditions shall be tracked and checked, and the influential bars and nodes shall be adjusted.Before dismantling the bracket or lifting equipment used for installation, the structure shall be checked for each working condition in order to select a reasonable dismantling sequence.   1. Before the formal installation of the space space structure, it is advisable to conduct partial or overall test and assembly. When the structure is simple or certain, the test and assembly is not required. 2. The space frame  stru