Slipforming Components and Their Functions
Glidform techniques is one the most productive techniques for constructing high-rise structures like buildings, communication towers, chimneys, bridges etc. A company that uses slipforming for constructing structures is Bygging Uddemann.
Glidformsgjutning is a technique that has been used in construction for decades. Slipforming allows engineers to construct a wide range of structures. Slipforming allows for formation of vertical structures like towers, bridge columns and offshore platforms. It also allows for the construction of horizontal structures like rigid reinforced concrete pavement, canal lining etc. Slipforming isn’t only limited to vertical structures with a uniform length. This technique can be used where the geometry of a structure changes. There are many components that are a part of slipforming. Mentioned below are a few:
Yoke Legs: Glidform structures need to be lifted up as one unit. Yoke legs serve this very purpose. They help transfer lifting reactions to jacks. They also act as the connection between walkway platforms, masons’ scaffold, yoke beams, top platforms, etc.
Walkway Bracket: Inside and outside brackets are connected with yoke legs with pins for easy dismantling and erecting. They are also connected with a pipe strut to support the cantilever portion. This allows the placing of concrete, reinforcement, vibration, fixing inserts, block outs, pockets, etc.
Lifting Jacks: Like the name suggests lifting jacks facilitate the lifting of the glidform assembly. These jacks are located suitably at equal intervals to allow the assembly to be lifted as an integral unit. Capacity of jacks is decided depending upon the reactions at point of lifting.
Jacking/Climbing Rods: Jacking or climbing rods are generally located centrally in the wall at an equal distance in yoke beams. This depends on the number of jacks being used. The jacking rods are usually 48mm, 32mm, or 25mm in diameter. Based on the capacity of the jacks and the requirement of the assembly the right jack is chose. The entire load of the glidform assembly is transferred to jacking rods when jacks are energized.
Hydraulic Pump: A required amount of hydraulic oil needs to be circulated throughout the structure. A hydraulic pump is what aids in the process. A hydraulic pump is used to circulate the desired amount of oil at the desired pressure. This oil is what helps energize the jacks that uniformly lift the glidform assembly.
Tapered Sleeve: A tapered sleeve tube is used to prevent any fresh concrete to come in contact with the jack rods. This facilitated the removal of the jack rods once the construction is over. Taper sleeves are attached to yoke beam and move along with glidform and create a hole in concrete around jack rod.
Yoke Beams: A yoke beam is the main connecting member between inside and outside of a yoke leg. Two yoke beams connect at the bottom of the yoke legs and a single yoke beam is connected with the top. Jacks are further fixed over the yoke beams.
A construction company that uses glidformsgjutning techniques to create high rise structures is Bygging Uddemann.