Ingenior F. Selmer A/s

Ingenior F. Selmer A/s Norway

Torlak Opedal

Tomas Berge Einstabland

Slipforming means intended for slipforming inclined, hollow columns of reinforced concrete, comprising a slipform platform (14) including the form work (28, 29), which is supported by and may be lifted/lowered by means of a climbing rod system (12) which is fixed to the already cast, cured portions of the column (11). The form work is by means of a number of yokes (26,27) suspended from the slipform platform and comprises inner and outer formsheets (28,29) extending in circumferential direction. The yokes are adjustable in radial direction with respect to the slipform platform while the form sheets are adjustable in tangential or circumferential direction with respect to each other. One of the form work walls is radially adjustable with respect to the other. The slipforming means is intended for slipforming hollow, inclined columns having increasing and/or decreasing diameter.

Offshore platform structure having at least a superstructure and a

Apparatus for moulding inclined, free-standing hollow columns of concrete by means of sliding formwork is provided. Initially, there is formed a base structure, and a bottom section of the column to be formed is anchored thereto. In the bottom section of the column is positioned a combined support- and guiding means which is displaceably positioned firmly against the inside wall of the column and which furthermore is liftably arranged, in a known fashion such as by being biased to the moulded column section by means of lift-jacks or the like. The support- and guiding means may be forcibly adjustable in the lateral direction during the continuous moulding of the column to control and if necessary adjust the direction of the formwork and thereby the column wall during the moulding of the same.

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Hosle, Norway

Torlak Opedal