| 摘要 |
The present invention relates to a floor structure for switching stations or the like, adapted to support, in an upper room (1), switch cabinets (4) and other heavy equipment and to allow conduits to be passed through the floor to a subjacent cable room (2) below. The floor structure comprises an easily pierceable upper floor (10) which is in the form of a single close-fitted, fire-resistant panel unit for airtight separation of the two rooms from one another. The upper floor is supported by a system of beams comprising main beams (5) and secondary beams (6) perpendicular to said main beams. The secondary beams are placed in pairs under the cabinets which they carry, while the main beams carry not only the secondary beams, but also sheet-metal profile sections (12) extending between said pairs of secondary beams and adapted to support the upper floor. Thus, one obtains easily pierceable zones (15) located under the cabinets and intended for conduit lead-ins, as well as supporting zones (16) difficult to pierce and located between said pairs of secondary beams and adapted to serve as transport surfaces or the like. |
