Experimental studies of a weak clay base reinforced with sand piles

Abstract

The study was aimed at assessing the deformability of a weak water-saturated clay base reinforced with a group of sand piles in the form of a continuous pile field, when they are jointly deformed under load. Existing studies consider the interaction of free-standing soil piles with the surrounding soil, methods for their calculation, without taking into account the joint operation of a group of piles in a deformable soil massif. The main research results were obtained in the form of new experimental data on the operation of a group of sand piles during their joint deformation with weak water-saturated clay soil massif under a stamp. The significance of the results obtained for the construction industry lies in the fact that the experimental data presented can be used in further theoretical studies to develop a calculation model that allows taking into account the peculiarities of the interaction of sand piles in a pile field with each other and with the surrounding soil massif and are of practical value.

Ensuring the stability of the deep pit enclosure and foundation bases in the conditions of reconstruction of the architectural monument in the city of Kazan

“…1. To transfer a part of the building in the axes «1-4» to a new foundation and thereby minimize the influence of technological processes for the construction of a deep pit in the immediate vicinity of the foundation of the wall along the axis «1» on the technical state of the load-bearing and enclosing structures [9][10][11][12][13].…”

Numerical studies of soil base deformations from reconstructed multi-storey building to nearby buildings

“…To date, the pile-raft foundations are one of the most effective developments in the foundation engineering field [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. They successfully apply in the design of multi-storey facilities on sites with unfavorable geological conditions, so far as they have an increased bearing capacity [2,[20][21][22][23][24].…”

“…They successfully apply in the design of multi-storey facilities on sites with unfavorable geological conditions, so far as they have an increased bearing capacity [2,[20][21][22][23][24]. However, in recent times, it is quite often in the construction of such foundations, there are cases of deviation from design solutions, which can lead, despite their high distribution capacity, to the uneven settlements development and, as a result, damage to the above-ground structures [1,3,[9][10][11][12][13][14]. In such conditions, it is important to carry out full-scale and numerical researches of the building load-bearing frame stress-deformed state in order to assess their residual resource and the necessity for reconstruction (strengthening).…”

Experimental studies of the various soils bedding influence on the stress-strain state of a layered subsoil base of the slab foundation

“…Qualitative and dependable forecasting of stress-strain state of ground bases is urgent problem of modern urban construction. Real soil properties, layered foundation irregularities in depth which influence on the processes in ground bases that occur under external loads, should be best reflected in the used analytical models [1][2][3][4][5]. The development of reliable computational theory of layered ground bases becomes a hot topic at the present time when necessity of the high-rise buildings construction with slab foundations [6][7][8][9][10] under adverse engineering-geological conditions in modern large cities can be observed.…”