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- BASES AND FOUNDATIONS, UNDERGROUND STRUCTURES
- Influence Of The Strut System Of The Excavation Pit On Resistance To Progressive Collapse
- UDC 624.137.4
doi: 10.33622/0869-7019.2025.06.65-69
Mikhail G. ZERTSALOV1, mzertsalov@yandex.ru
Anton V. ISAEV1,2, a.isaev@cniipz.com
1 National Research Moscow State University of Civil Engineering, Yaroslavskoye shosse, 26, Moscow 129337, Russian Federation
2 Central Research and Design and Experimental Institute of Industrial Buildings and Structures - TsNIIPromzdaniy, Dmitrovskoe shosse, 46, korp. 2, Moscow 127238, Russian Federation
Abstract. Due to the growth of transportation underground construction, the question of safety of excavations developed by open-cut construction method arises. The article considers the influence of factors (soil deformability, spacing of the strut system, groundwater level and stiffness of the monolithic trench wall), which have the biggest influence on the redistribution of forces in the enclosing system of the excavation in case of emergency situation, for example, failure of one, the most loaded, strut. Based on the results of the studies, the influence of each of these factors on the possibility of progressive collapse was evaluated. The studies were carried out using the finite element method and the element planning method. Statistical processing of the obtained results was performed using multiple linear regression and artificial neural network. The results of calculations showed that the horizontal spacing of spacers does not significantly affect the redistribution of forces in them. At the same time, the results obtained using both artificial neural network and multiple linear regression showed a noticeable influence on the increase of forces in the spacers of the envelope system.
Keywords: diaphragm wall, progressive collapse, enclosure of the excavation, strut system, specific impact, artificial neural network - REFERENCES
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