As a complex, high-static structure, it is tough to reinforce the space grid structure when something goes wrong, which has led to many accidents in engineering practice. To ensure the quality of the space grid structure project and reduce the construction risk factor, what is the space structure construction technology? Let’s take a look together.
High-altitude installation method
Scope of application: applicable to bolted mesh frame, overweight transportation is more difficult in the region; applicable to a small splicing unit with a crane to the design position of the assembly method.
Process Characteristics:
① space frame structure on the pre-embedded components of the pre-embedded construction quality requirements, structural components, nodes, assembled at high altitude construction difficulties;
② do not need to set up scaffolding or only set up a simple mobile scaffolding, the mechanical requirements are not high, which can save project costs;
③ Construction speed is relatively fast;
④ technical difficulties, difficult to protect the safety of the difficult.
Strip and block method of installation
Scope of application: suitable for the installation of small and medium-sized space frames.
Process Characteristics:
① Most of the welding and assembling work is carried out on the ground, which is conducive to improving the quality of the work and eliminating most of the assembling brackets.;
② The size of the slitting or chunking should be according to the local lifting equipment, which is conducive to reducing costs.
Slip-on installation
Scope of Application:
① The building plan is rectangular, trapezoidal, or polygonal, and other planes.
② site narrow, mountainous areas, and other areas of construction;
③ spanning the construction, such as the replacement of the workshop roof, rolling, machinery, and other equipment in the plant foundations, equipment, and roof structure, parallel construction.
Process Characteristics:
① no impact on the internal construction of the building, network installation, and lower civil construction can be flat three-dimensional operation, greatly accelerating the construction period;
②Constructionn is convenient. The lifting equipment, traction equipment requirements are not high; available small cranes or winches, or even without, and only need to set up a local assembly bracket. Such as the end of the building, there is a platform that can be utilized, where you can set up scaffolding.
Integral lifting method
Scope of application: applicable to various types of space frame structures.
Process Characteristics:
① construction speed, assembling quality is guaranteed;
② do not need any turnover materials, cost savings;
③ Personnel construction ensures convenient, safe operation.
④ Construction is limited by the site, and the weight of the mesh frame can not be too heavy;
⑤ Lifting can be in the high altitude of the pan or rotate in place.
Overall Enhancement Method
Scope of application: Installation of heavy-duty roofing systems, perimeter-supported or point-supported net frames for large-span net frames.
Process Characteristics:
① The use of lifting equipment is generally small, and the use of small groups of machines to install a large net frame is.
② The lifting stage of the net frame support situation remains unchanged, in addition to the use of special brackets, other lifting methods are the use of structural columns, the lifting stage of the support of the net frame, and the use of the stage is the same.
③ due to the large capacity of lifting equipment, as far as possible, the installation of more roof structures before lifting, to reduce the overhead work;
④ the net frame of the overall lifting method can only be in the design coordinate of the vertical rise (iv) The overall lifting method can only rise vertically at the designed coordinates, if it is necessary to move or rotate the mesh frame, separate measures should be taken for sliding, and the overall lifting method is suitable for the construction when the construction site is narrow.
Monolithic jacking method
Scope of application: Installation of large-span net frames, heavy-duty roofing systems, and point-supported net frames with fewer pivot points.
Process Characteristics:
① Net frame on top of the lifting equipment, the use of jacking equipment is generally smaller, which involves the use of small groups of machines to install a large net frame.
② The jacking process, in addition to the use of special brackets, generally uses the structural column., The jacking stage of the support of the net frame is the same as the use of the stage, and does not need to consider the jacking stage of the strengthening measures.
③ Due to the jacking capacity of the larger, as much as possible, should be installed after the installation of the roof structure and then jacked up, which reduces the high-altitude work and reduces the cost.