Abstract
Currently, a number of difficulties arise in the construction of dense urban areas, as well as in the reconstruction and superstructure of existing buildings and structures. Often when carrying out geological scene investigation, it is not possible to determine the strength parameters of the soil directly under the foundation. In most cases, this leads to understating of its characteristics, which is reflecting in the excessive economic costs resulting from the need to strengthen the existing building structure. However, in many situations, this can be discarded, justifying it by calculations. In this paper is shows the performed series of numerical experiments and were analyzed the changes of existing building foundation settlements, taking into account its long-term exploitation in assessing the impact of new construction. The base had defined by a single-layer half-space with a limited depth of deformation zone and composed of medium-sized sand. PLAXIS 2D software was chosen to create the calculation model. When processing the results, it was possible to identify a certain dependence that allows estimating the maximum settlement of existing building in the impact assessing from new construction taking into account the duration of building operation. The obtained data prove the necessity to take into account the change in strength properties of soils caused by long-term loads action of structures.
Highlights
IntroductionOn the issue of duration exploitation effect at buildings to the properties of the foundation soils, a large number of experimental and theoretical studies have been carried out [1-8]
At present, special attention is paid to calculations in assessing the impact of new construction on the surrounding buildings.On the issue of duration exploitation effect at buildings to the properties of the foundation soils, a large number of experimental and theoretical studies have been carried out [1-8]
The foundation settlements were determined without taking into account the duration of the loads and at the time t equel 100 years
Summary
On the issue of duration exploitation effect at buildings to the properties of the foundation soils, a large number of experimental and theoretical studies have been carried out [1-8]. They showed that over time a change in the physical and mechanical properties of basement soil, which is due influencing of various factors. Its physical, strength and deformation properties are improved These soil properties transformations at basement of long-term exploitation buildings foundations are amenable to forecasting and can be taken into account calculations
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