JOURNAL OF FACULTY OF CIVIL ENGINEERINGINTERNATIONAL CONFERENCECONTEMPORARY ACHIEVEMENTS IN CIVILENGINEERING 25, 2014.y., pp. 87-93MODERN SOLUTIONS ELEMENT CONNECTIONS IN THE NODES OF PREFABRICATED STRUCTURES USING THE SCREW CONNECTION
|CC-BY-SA 4.0 license
|Author : Kokrehel, Zsolt
|Solution of precast columns connection to foundation slab using conventional
foundation cups can be problematic especially on sandy ground where the groundwater level is
very close to ground level. Required height of the cup significantly increases the required
minimum foundation depth and the foundation is inevitably below the groundwater level.
Lowering the groundwater level is practically impossible or it is very expensive. By applying
system of direct connection of precast column to foundation slab with anchor bolts and column
shoes, the foundation structure overall height can be successfully reduced and therefore the
foundation level will be over groundwater level. Established connection is rigid connection
resistant to bending influences that behaves equivalently to the foundation cups solution.
Successful solution can be used at underground structures where normally the connection is
provided by inverted cups and it can be avoided. By applying bolted connection there is a
possibility to design precast column extension (connecting column to column) or connection of
precast part with in-situ concrete sub-structure. Cyclic load test carried out shown very high
ductility of bolted connections and this type of connection is suitable in areas with seismic load.
|Bolted connection, column shoes, anchor bolts, joint connections, foundation