SAFS Steel Structure Space Frame analyzes three installation methods for single-story industrial plant structures: piece-by-piece hoisting method, inter-node hoisting method and comprehensive hoisting method.
1. Piece hoisting method
The hoisting method in parts is that when the plant structure is hoisted, only one or two components are hoisted each time the crane is hoisted. Generally, all components are hoisted in three times. The first time to hoist the column, and to correct and fix it; the second time to hoist the crane beam, the connecting beam and the inter-column support; the third time to hoist the roof truss, skylight frame, roof panel and roof support between sections.
Part-to-piece hoisting method, the same type of components are hoisted every time the crane is used. The crane can be selected according to the weight and installation height of the components. Different types of cranes are selected for different components, which can give full play to the working performance of the crane. During the hoisting process, the number of rigging changes is small, the hoisting speed is fast, and the efficiency is high, which can provide sufficient time for component correction, welding and fixing, and concrete pouring and curing.
2. Comprehensive hoisting method
The comprehensive hoisting method means that part of the components in the building (columns, inter-column supports, crane beams and other components) are hoisted by the separate hoisting method. Part of the components (all the components of the roof) are hoisted by the internode hoisting method. The comprehensive hoisting method absorbs the advantages of the piece hoisting method and the inter-node hoisting method. Therefore, this method is mostly used in structural hoisting.
3. Inter-node hoisting method
The inter-node hoisting method means that in one operation of the crane during the hoisting process, all or most of the various types of components are hoisted between the sub-nodes. The advantage is that the crane has a short walking route, and the working surface can be created for the next process according to the interval in time. However, it is required to choose a crane with a larger lifting capacity. The performance of the crane cannot be fully exerted, the rigging is frequently replaced, the installation speed is slow, the supply of components and the layout are complex, and the time for component correction and post-fixing is urgent. This method is generally not used for the hoisting of reinforced concrete structure workshops, and is only suitable for the installation of steel structure workshops and gantry structures.
