Ⅳ Climbing formwork
The climbing formwork is a formwork process suitable for the construction of cast-in-place reinforced concrete vertical or inclined structures, such as walls, bridges, towers, etc. It can be divided into two types: “carrying formwork” and “no frame climbing type”. China’s climbing mold technology began in the late 1970s and was applied in Shanghai, “No-frame climbing model” was first used in the construction of cast-in-place reinforced concrete in the main building of Beijing Xinwanshou Hotel in the 1980s. It has gradually developed and formed to three type of formwork system, one is “The formwork is crawling with the climbing frame”, another one is “the climbing frame is crawling with the climbing frame” and the last one “the formwork is crawling with formwork”. Among these methods, the first one is the most common.

The climbing formwork is a formwork process that combines the process and characteristics of the large forms and the sliding formwork. It has the advantages of a large formwork and a sliding formwork. It is especially suitable for super high-rise building construction.

Like the sliding formwork, it is attached to the vertical structure of the building during the construction phase of the structure, and rises layer by layer with the construction of the structure, so that the formwork can not occupy the construction site or use other vertical transportation equipment. In addition, it is equipped with operation scaffolding and a reliable safety enclosure, so there is no need to set up external scaffolding. It is especially suitable for building multi-story or high-rise buildings on narrower sites. Like large formwork, it is installed layer by layer, so its verticality and flatness was easy to adjust and control, to avoid the accumulation of construction errors. There is also no phenomenon that the wall is pulled apart. However, the preparation amount of the climbing formwork is larger than that of the large formwork, because the construction process cannot implement the staged flow construction, so the turnover rate of the formwork is low.

To be continue…