A floor system comprising: a support structure connected to the ground; a floor mounted on said support structure and raised relative to the ground; characterised by at least one stabilising device for an item of equipment above the floor comprising: a support capable of being connected to said item of equipment; a lifting means associated with said support; said lifting means being configured to displace said support between: a resting position in which said item of equipment is supported by said floor; and a working position in which said support is raised from the floor, said lifting means being deployed through an opening in said floor until it rests on the ground and then displaces the support towards the working position, such that said item of equipment is detached from said floor in order to avoid the transmission of vibrations by said floor to said item of equipment, in which the lifting means is deployable between a retracted configuration in which it is not in contact with the ground, corresponding to the resting position of the support, and a deployed configuration in which it rests on the ground and supports the support in the working position. a support structure connected to the ground; a floor mounted on said support structure and raised relative to the ground; characterised by at least one stabilising device for an item of equipment above the floor comprising: a support capable of being connected to said item of equipment; a lifting means associated with said support; said lifting means being configured to displace said support between: a resting position in which said item of equipment is supported by said floor; and a working position in which said support is raised from the floor, said lifting means being deployed through an opening in said floor until it rests on the ground and then displaces the support towards the working position, such that said item of equipment is detached from said floor in order to avoid the transmission of vibrations by said floor to said item of equipment, in which the lifting means is deployable between a retracted configuration in which it is not in contact with the ground, corresponding to the resting position of the support, and a deployed configuration in which it rests on the ground and supports the support in the working position. a support capable of being connected to said item of equipment; a lifting means associated with said support; said lifting means being configured to displace said support between: a resting position in which said item of equipment is supported by said floor; and a working position in which said support is raised from the floor, said lifting means being deployed through an opening in said floor until it rests on the ground and then displaces the support towards the working position, such that said item of equipment is detached from said floor in order to avoid the transmission of vibrations by said floor to said item of equipment, in which the lifting means is deployable between a retracted configuration in which it is not in contact with the ground, corresponding to the resting position of the support, and a deployed configuration in which it rests on the ground and supports the support in the working position. a resting position in which said item of equipment is supported by said floor; and a working position in which said support is raised from the floor, said lifting means being deployed through an opening in said floor until it rests on the ground and then displaces the support towards the working position, such that said item of equipment is detached from said floor in order to avoid the transmission of vibrations by said floor to said item of equipment, in which the lifting means is deployable between a retracted configuration in which it is not in contact with the ground, corresponding to the resting position of the support, and a deployed configuration in which it rests on the ground and supports the support in the working position.