METHOD OF UNDERGROUND STRUCTURE ERECTION IN URBAN BUILT-UP AREA

摘要

FIELD: building, particularly underground structures.;SUBSTANCE: method involves arranging geotechnical barrier in ground between foundation of existent building and underground structure to be bui embedding thereof for design depth; building walls and bottom of underground structure. Geotechnical barrier is formed by making crack extending for a design barrier embedding depth on the path of ground deflected mode change wave propagation. Then flat pneumatic chamber is installed in the crack and compressed air is pumped in pneumatic chamber to obtain pressure corresponding to initial ground deflected mode. If ground deflected mode changes during structure erection compressed air is repeatedly pumped in pneumatic chamber to recover initial pressure. After structure erection completion hardening mortar is fed into pneumatic chamber.;EFFECT: prevention of ground deflected mode change under building foundation during underground structure erection.;2 dwg