3 Prenova
3 Reconstruction
predelu, kjer je bilo treba dodatno poglobiti klet do skoraj dveh metrov.
part where the basement level had to be deepened to almost two meters.
Skrbno premišljen poseg v stavbo je bila odstranitev in rušitev kletnih sten na dvorišču, pod katerimi so nameščeni vitki jekleni podporni stebri. Poglobitev zunanjega dvorišča na nivo kleti, skupaj z ohranitvijo fasadnih sten nad odstranjeno kletno steno, je zahtevala skrajno domiselno konstrukcijsko izvedbo začasnega podpiranja. Pred posegom v rušitev kletnih sten je bilo treba vnesti nosilce v obstoječ stenski profil na način, da so za čas faznosti izvedbe nosilcev obtežbo sten prevzemali jekleni podporniki. Ti so po betonaži nosilcev ostali v profilu stene, dokler ni beton dosegel zadostne trdnosti in prevzel potrebno nosilnost celotne statične obtežbe objekta. Precizno izvedeni statični posegi so omogočili povezati prostor med obstoječimi kletnimi prostori in razširjenim poglobljenim dvoriščem ter amfiteatrsko predavalnico z razstavnim prostorom.
The removal and demolishing of basement walls in the courtyard area, under which steel support columns were constructed, required careful planning. The deepening of the external courtyard to the basement level, together with the preservation of the façade walls above the removed basement wall, required an innovative construction mechanism providing temporary support. Before tearing the basement walls down, girders had to be incorporated into the existing wall profile. During this stage, the ballast had been supported by steel pillars, which remained in the wall after the girders were encased in concrete. They were removed when the concrete hardened and was able to support the static load of the building. By means of precisely implemented static interventions, the space between the basement and the expanded and deepened courtyard has been connected with the lecture theatre and exhibition premises.
GR A DBENO-KONSTRU KCIJSKI I Z Z I V I OBNOV E
CONSTRUCTION CHALLENGES
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