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Влияние опрессовки грунтового основания на формирование НДС основания ленточных свайных фундаментов, объединенных плитами переменной жесткости

Влияние опрессовки грунтового основания на формирование НДС основания ленточных свайных фундаментов, объединенных плитами переменной жесткости

Abstract

Наличие слабых подстилающих грунтов на территории Тюменской области вызывает ряд трудностей проектного и производственного характера при строительстве высотных и повышенной этажности зданий. Для обеспечения требования непревышения предельно допустимых осадок разработан ленточный свайный фундамент, объединенный плитами переменной жесткости, с предварительным напряжением грунтового основания, достигаемым за счет нагнетания под давлением растворной смеси. В статье представлен анализ влияния предварительного напряжения грунта за счет опрессовки пролетного пространства фундамента цементным раствором, применительно к реальным сооружениям, с помощью программного комплекса Plaxis 3D в условиях объемной деформации с использованием модели Hardening Soil. Варьирование очередности опрессовываемых пролетов позволяет добиваться требуемых параметров грунтового основания в плане и по глубине, улучшающих взаимодействие с фундаментом и надземной частью здания или сооружения.

Soft underlying soils of Tyumen region territory produce some difficulties for design and construction work of high-rise building. A strip pile foundation combined by plate of variable rigidity with pre-stressed ground base was made for the non-exceedance enforcement of maximum allowable settlement. Pre-stressing was created by mortar injection under the plate. The article presents the analysis of soil pre-stress influence in respect to real conditions by Plaxis 3D computational modelling in Hardening Soil model. Priority variation of pre-stressing building bay soil achieves design objectives of ground base in plan and in depth. It rationalizes interaction between ground base and foundation.

Keywords

НАПРЯЖЕННО-ДЕФОРМИРОВАННОЕ СОСТОЯНИЕ, ТЕХНОЛОГИЯ, ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ, ПРЕДВАРИТЕЛЬНОЕ НАПРЯЖЕНИЕ, ПЛИТА ПЕРЕМЕННОЙ ЖЕСТКОСТИ, СВАЯ, ЛЕНТОЧНЫЙ ФУНДАМЕНТ, ГРУНТОВОЕ ОСНОВАНИЕ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold