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Geotechnical and structural remediation of residential building damaged by pit excavation
Author(s) -
MIHALJEVIĆ Ivan,
GALIĆ Josip,
BANOVAC Filip
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.805
Subject(s) - geotechnical engineering , excavation , masonry , demolition , deflection (physics) , foundation (evidence) , consolidation (business) , engineering , geology , precast concrete , settlement (finance) , civil engineering , mining engineering , physics , accounting , optics , archaeology , world wide web , computer science , business , payment , history
Residential building in town Pula in Croatia sustained structural damage through differential settlement, which occurred as a result of works in the nearby pit for sewage construction. Although no horizontal deflection was observed on the retaining structure of the pit, excessive vibration during installation caused consolidation of marine sediment soil on which the building rests. Building, which is more than 100 years old masonry structure, developed vertical and diagonal cracks on the outer bearing as well as inner walls, which widened from the ground floor to the top. Since differential settlements and tilting of the building continued after filling of excavation pit, remediation of the building was needed. Reinforced concrete beams were constructed under the masonry foundation strips as well as the jet grouting columns which transferred foundation loads to bedrock. Structural strengthening was done simultaneously. After the remediation, settlements and tilting soon subsided and stopped, while the monitoring equipment was left permanently on the building.