Climbing formwork is an advanced construction technology of cast-in-place vertical reinforced concrete structure, which is often used in railway construction in mountainous areas. On the basis of buildings or structures, according to the scheme, a section of formwork is installed at a time along the periphery of the structure, and it is continuously poured with the formwork.
Pouring concrete and binding steel bars, constantly lifting the formwork, and completing the pouring and molding of the whole building (structure). It is characterized in that the whole structure is assembled only once with a hydraulic sliding template; In the process of climbing, formwork support, formwork removal, scaffolding and transportation are not needed. The concrete is poured continuously, the construction speed is fast, and the construction joints can be avoided. At the same time, it has the advantages of saving a lot of formwork and scaffold materials and labor, reducing labor intensity, reducing construction cost and safety in construction. Widely used in chimneys, silos, water towers, oil tanks, shafts, open caissons, elevator shafts, TV towers and high piers of bridges; It can also be applied to civil high-rise buildings, multi-storey frames and frame-shear structures.
Slipform engineering technology is a kind of construction technology with high mechanization, fast construction speed, less land occupation, strong structural integrity, good seismic performance, safe operation, comprehensive environmental benefits and remarkable economic benefits in the construction of cast-in-place concrete structures in China, and is usually called "slipform". However, slipform not only includes tool templates such as ordinary templates or special templates, but also includes comprehensive technologies such as dynamic sliding equipment and supporting construction technologies. At present, hydraulic jacks are mainly used as sliding power. Under the synchronous action of group jacks, the tool formwork or sliding frame with a height exceeding 1 m is driven to slide along the newly formed concrete surface or formwork surface. Concrete is poured into the sleeve groove from the upper mouth of the formwork in layers, and the thickness of each layer is generally less than 30cm. When the lowest concrete in the formwork reaches a certain strength, the formwork sleeve groove slides along the surface of the poured concrete or the carriage slides along the outer surface of the formwork, and then slides upward for about 30cm, and so on until the design height is reached, and the whole construction is completed. Slipform technology is the best choice for vertical concrete engineering!