Arrangement of Multistory Underground Parking Garages in Complex Engineering and Geological Environment

Abstract

This article discusses possible variants of underground parking lot in complex engineering and geological environment of St Petersburg, namely: soil excavation in open pit and excavation with solid supports. These methods were analyzed with regard to reasonability for preset construction conditions. A series of predictions were performed using Plaxis 2D software, two variants were described in this article: excavation with the bottom elevation of +0.560 m and excavation with the bottom elevation of -2,500 m and adjacent building (at the distance of 2.5 m). The formulated problems were solved using 2D models. The model was based on the Mohr–Coulomb theory which facilitated estimation of geotechnical environment in the vicinity of the construction. Predictions of retaining wall according to the two considered variants have demonstrated that maximum soil settlement near the excavation is 20 mm and the maximum additional settlement of building at the distance of 2 m from the excavation is 30 mm, which in both cases corresponds to predetermined specifications.

Influence of Sulphate Attack on Properties of Modified Cement Composites

“…Demolding the samples was carried out after 2 days. Samples with modified technical sulphur were subjected to additional volumetric thermocatalytic treatment at 180 • C for 60 min, and then gradually cooled to room temperature for 2 h [4,5,42]. All samples were stored in wet conditions for 28 days and then, after 28 days, the samples were loaded into the aggressive hydrosulphate medium.…”

“…2021, 11, 8509 2 of 13 protect against aggressive influences. Waterproofing via surface penetration of the compositions or bulk thermocatalytic impregnations can be distinguished as the main methods of waterproofing building capillary-porous materials [4][5][6].…”

Development of the trainer program based on neural network technologies for development of spatial thinking of students

“…Смысл этого высказывания весьма актуален и нацелен на формирование высокоинтеллектуальных специалистов-исследователей, отвечающих уже сегодня требованиям завтрашнего дня, которые должны заниматься не только решением технических вопросов, но и реализовывать научно-исследовательские направления работы прежде всего связанные с уровнем тактической и стратегической безопасности человечества в условиях расширения границ инноваций [2] и развития индустрии 4.0 [3], в том числе связанными с вопросами: разработки и добычи полезных ископаемых [4; 5], переработки полезных ископаемых [6], строительстве специальных инженерных сооружений [7], защиты окружающей среды [8], технологии утилизации отходов, развития альтернативных источников энергии и зеленой энергетики [9], создания безлюдных производств, умных домов и городов [10]. Решение вышеперечисленных задач невозможно без наличия высокого уровня технического мышления, одним из важных компонентов которого является пространственное мышление, формирующееся на базе школьных курсов и развивающееся при дальнейшем обучении в университете в результате усвоения общеинженерных дисциплин.…”