RATIONALIZATION OF GEOMETRIC PARAMETERS OF EFFECTIVE FOUNDATION BLOCKS
DOI:
https://doi.org/10.33042/2311-7257.2024.111.1.12Keywords:
rationalization, modeling, loading, strain energy, concrete, foundation blockAbstract
The scientific work is devoted to the rationalization of the geometric parameters of effective foundation blocks using the bionic-energetic method of building effective structures. To build a reference solution, it is advisable to use new provisions based on energy principles, namely the minimization of the potential energy of deformation (PED) and the requirement of isoenergetic state of the system. The work considers the construction of lightweight hollow foundation blocks. The foundation block is presented in the form of a reinforced concrete shell with ribs, the inner part of which is filled with polystyrene foam inserts. The article considers six variants of blocks with a length of 2.4 m and a cross-section of 0.6×0.6 m, in which the total volume of reinforced concrete and liners is a constant value and is equal to the ratio of 70% to 30%. The outer walls of the blocks are assumed to have a constant thickness and are assumed to be 150 mm. In the transverse direction, the inserts have constant dimensions of 400×400 mm. In the options considered, only the thickness of the liners and the step of their location were changed. In this way, we get blocks with different steps and rib thickness, which varies from 100 mm to 150 mm. Numerical modeling was carried out by building detailed finite element models of block variants, and based on it, the most rational block design was selected from the point of view of minimizing potential deformation energy, and on its basis, the most rational block design was selected. The highest PED values occur in places where the block has the largest empty parts and ribs of minimal thickness. An analysis of the stress-strain selected version of the block was also carried out, which confirms the competitiveness of the block among the considered options.
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