TECHNOLOGY RESTORATION OF THE OPERATIONAL SPO-PROPERTY OF DEFORMED BUILDINGS BY THE MANAGEMENT OF THE SAME-BASE OF THE FOUNDATION BASES
Array
Keywords:
deformation of objects, restoration of deformed buildings, base stiffness, sediment of foundations, roll removal, base perforation, horizontal well, drilling rig, technological parametersAbstract
The developed method of restoring deformed and emergency buildings by controlling the foundation stiffness is presented. During the design and construction of buildings and structures, final stabilization deformations of the bases are calculated taking into account the loads, soil characteristics and the corresponding distribution of the base stiffness coefficient under the assumption that the base deformation process is almost completed. But in areas composed of structurally unstable soils, during the operation of structures, changes in the rigidity of the bases are possible due to the negative effect on the properties of the soils.
To restore the operational suitability of damaged buildings, a method has been developed for eliminating their deformed state, which is based on the management of the stiffness of the bases. The concept of this method lies in the fact that in case of violation of the design distribution of the base stiffness coefficient, it is necessary to ensure recovery stiffness from the mirrored distribution of the destructive shift coe fficient. On the basis of geodetic survey data of a deformed building, a necessary pattern is determined for changing the foundation stiffness and the plot of the desired sediment of the foundation.
The recovery sediments of the foundation provide for the desired epure, corresponding to the "new" distribution of stiffness by perforation of the base layer of limited thickness. Perforation under the foundations carry out the drilling of horizontal wells of the calculated parameters.
Under the influence of the weight of the structure and additional technological impact, for example, moistening, the cavities of the wells are deformed, turning from round to ellipsoidal, the pillars of the soil and the arches between the wells are destroyed, filling the deformed cavities, the perforated base layer is compressed. Compression of the layer and sediments of the foundations occur in accordance with the calculated parameters of the wells. As a result, the foundations and, accordingly, the structures are returned to the design (initial) position.
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