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Information × Registration Number 0221U104700, 0114U000899 , R & D reports Title Features of interaction not rock foundation soils with pile-slab foundation of buildings, taking into account the possible formation of them mining for underground constructions or karst failures popup.stage_title Head Karpiuk Iryna A., Registration Date 06-04-2021 Organization Odessa State Academy of Civil Engineering and Architecture popup.description2  Research report: 142 pages, 32 figures, 8 tables, 142 sources. The object of the research is the joint work of the pile-slab foundation and its components with the base, in which voids and workings can form. The purpose of the work is to improve existing and develop new engineering methods for determining the bearing capacity of pile-slab foundations from pressed and driven piles, taking into account the formation of mine workings or karst sinkholes at their base, as well as calculating the frames of underground structures in complex engineering-geological conditions, which are located under the specified foundations; research of the features of work of reinforced concrete grillages damaged by force cracks, reinforced with pre-stressed metal clips; determining the possibility of replacing steel reinforcement with a non-metallic composite (NCA), in particular basalt-plastic (BFRP). The research methods consist in the application of an integrated approach using the theory of mathematical planning of multifactor natural and numerical experiments, deformation and deformation-force methods for determining their bearing capacity using phenomenological criteria for the strength and deformation characteristics of soil, strength of concrete and reinforcement, diagrams of their state, methods of fracture mechanics materials, etc. Based on the results of the studies performed, the main regularities of the operation of pile-slab foundations from pressed and driven piles were identified, taking into account the formation of mine workings or karst sinkholes at their base, as well as the calculation of the frames of underground structures in complex engineering-geological and compressed urban conditions; the dependence of the bearing capacity of damaged reinforced concrete grillages - slabs reinforced with prestressed metal clips, on structural factors and external factors was established, the expediency and possibility of replacing steel reinforcement in them with a non-metallic Product Description popup.authors popup.nrat_date 2021-04-06 Close