Moving and Straightening the Building Segment

Abstract

The segments of buildings located on areas where the impact of underground mining is seen are subject to mutual displacements. For poorly designed or executed expansion joints, the direct interaction of the neighbouring segments occurs (compression and closing down of the expansion joint). Such compression has led, in many cases, to a threat to the safety of residents, to building failures and to significant property losses. The subject of the publication is a multifamily dwelling building consisting of two semi-detached segments. Each segment is provided with a complete basement and has two aboveground floors. Due to the acting mining area curvature and compression horizontal deformations, the direct interaction of the neighbouring segments occurred in the expansion joint on the ceiling level above the last floor. In addition, due to uneven vertical displacement of mining land, the building has deflected vertically, which has considerably reduced the comfort of its use. One building segment was moved by 300 mm versus the other segment to avoid a building failure caused by direct interaction. Moreover, the comfort of building use was restored by straightening the building through uneven raising. The segment was displaced vertically and horizontally in four phases, during which mobile supports were installed, and the structure was moved in the horizontal direction and raised unevenly. All the designed works, that were individually designed, are presented in this publication. The works carried out have prevented a building failure and restored the comfort of building use.