SURVEYING PROCEDURE AND SYSTEM FOR A HIGH-RISE STRUCTURE

摘要

The invention concerns a urveying procedure for a structure (1'), more particularly a high-rise building, to be erected which has an ideal axis (a) oriented relative to the gravity vector. At least three reference points (A<SUB>5</SUB>', B<SUB>5</SUB>', C<SUB>5</SUB>') are defined by receivers (AA, BB, CC) of a satellite-based positioning system (2), on the uppermost construction level (E<SUB>5</SUB>) of the structure (1'). The position of an electro-optical geodesic instrument (3) assigned to the structure (1') is determined relative to the three reference points (A<SUB>5</SUB>', B<SUB>5</SUB>', C<SUB>5</SUB>') and to a singular point (P<SUB>5</SUB>') of structure (1'). The tilt (a<SUB>5</SUB>) of a real line (a') developing from the ideal axis (a) under tilt effects acting on the structure (1; 1') is acquired gravimetrically, more particularly with a gravimetric tilt sensor (I<SUB>5</SUB>). A static coordinate system tied to ideal axis (a) is transformed to a coordinate system tied to real line (a') and depending dynamically on tilt (a5) , by adducing the at least three reference points (A<SUB>5</SUB>', B<SUB>5</SUB>', C<SUB>5</SUB>') , the relative position of the geodesic instrument (3), and the tilt (a5) of real line (a') . By the repetitive steps of gravimetric acquisition of tilt (a5) of real line (a') and of referencing and matching of the geodesic instrument (3) to the coordinate system that dynamically depends on tilt (a<SUB>5</SUB>), a precise and reliable surveying procedure can be provided for a structure (1; 1') of almost any height, and more particularly for a high-rise building, that is to be erected and is subject to tilt effects, and hampers the use of ground-level reference points.