'Faculty of Civil Engineering, University of Zagreb'
Doi
Abstract
Na zgradi vukovarske gimnazije, saniranoj od ratnih oštećenja tijekom Domovinskog rata, nedugo
nakon početka uporabe počele su se primjećivati pukotine te uočavati znakovi slijeganja
temelja. Zgrada koja je tlocrtno razvedena nalazi se na lesnom platou. U podnožju platoa postoje
nepodgrađeni “podrumi” kojima su se svodovi počeli zarušavati, što se povezuje s provlaživanjem
uslijed neadekvatne površinske odvodnje. Uz lesni plato dijelom su izvedeni stari
obložni zidovi od opeke, a dijelom novi potporno-obložni zidovi, dio kojih ima značajke gravitacijskih
zidova. Pri gradnji jedne dionice takvog potpornog zida blizu ruba gimnazijske zgrade
došlo je do klizanja dijela pokosa u njegovoj pozadini, što je tada sanirano. Navedeni problemi,
a posebice problem slijeganja, bili su povod za sanaciju temeljenja najviše oštećenog dijela
zgrade, te je 2008. godine ona provedena izvedbom mlazno injektiranih pilota. Pri definiranju
uzroka i opsega oštećenja građevine, ali i za ocjenu uspješnosti sanacije, više puta obavljani su
geotehnički istražni radovi te mjerenja i opažanja na zgradi i okolišu, što je opisano u okviru
ovoga rada.The Vukovar High School building, repaired following war destructions during Homeland War,
started to show cracks and signs of foundation settlement already after a short period of use.
The building, widely spread and indented in plan, lies on a loess soil plateau. At the bottom of
the plateau there are unlined “basements“ whose vaults have started to collapse as a result
of moisture due to inadequate surface drainage. Old brick lining walls and new lining and
retaining walls, some having properties of gravity walls, actually border on the loess plateau.
During construction of one part of such retaining walls, near the high school building, a part of
slope was affected by sliding, which was subsequently remedied. All these problems, and the
settlement problem in particular, have led to the remedy of foundations at the most damaged
part of the building. Thus, in 2008, the remedial work was made by jet-grouted piles. Soil investigation
works, measurements and monitoring activities were conducted on several occasions
in order to find the causes and the extent of damage to the building, and also to confirm the
success of repair activities, as described in the paper