What is a ground shoring system and what is it for? Particularities in the diaphragm wall
“A ground shoring is a temporary metal structure that replaces a future slab while excavation is in progress, absorbing the soil pressure behind the diaphragm walls.
The goal is that the diaphragm walls (designed to eventually work under bending moments and shear forces between slabs) have support points in the excavation stages leaving bending lengths similar to those that the diaphragm walls will have once the execution of the basement is finished and the slabs can bear loads.
As a rule of thumb, if a thorough analysis of the diaphragm walls is to be avoided, each future slab should be replaced by an equivalent level of shoring as close as possible to the slab itself.
The number of strut levels can be optimized (i. e. reduced) by re-analysing the diaphragm walls and checking that stresses, displacements and crack width are under control during all excavation stages.
Main ground shoring systems
INCYE’s ground shoring systems are based on three types of equipment: meccano formed by Megaprop beams and accessories, Granshor modular trusses system and Pipeshor tubular prop system.