Strengthening the ground and stopping subsidence of supporting columns inside the building

Stabilization of foundation constructions
Category
Shopping and entertainment complexes
Object
Cinema
Focus
Elimination of subsidence of the foundations
Location
Smolensk region
Time of work
2020 г.
The timing
2 days
TECHNOLOGY
DEEP INJECTION

Method:

Uretek Deep injection.

Problem:

During the building's operation, the internal load-bearing columns have undergone by subsidence. The reason was uneven compaction of the ground (backfill soil).

Task:

To strengthen the foundation soil and stop the uneven settlement of the foundations of the columns.

Solution:

Before starting work on strengthening the base, a series of geodetic surveys was carried out to accurately determine the position of the columns in space (in the vertical and horizontal planes). Also, decompressed ground horizons of the base were identified by dynamic penetration test. A separate study revealed local areas of voids under the floor slab.

To solve this problem, we chose the injection method – Uretek Deep injection. All work was carried out from the surface of the floor slab of the 1st floor, injection was performed at calculated angles according to the project design and "wave principle". Filling the void was performed strictly vertically. All work was carried out under the constant supervision of the geodetic service.

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