The invention discloses a measuring device and method for
vertical displacement and ground surface settlement of a large structure body. The measuring device comprises a plurality of measuring units and a
data processing center arranged at a far end; each measuring unit comprises an imaging
system, a hydro-static leveling instrument, a datum target, one or more measuring targets and one or more
laser distance measuring instruments; and after obtaining measured results of the hydro-static leveling instrument, the
laser distance measuring instruments and the imaging
system, the
data processing center calculates to obtain side wall parameters, top displacement parameters and ground surface settlement parameters of the large structure body according to measured results of a
settling probe, the datum targets, the measuring targets and the
laser distance measuring instruments. The measuring device overcomes the problem that measuring errors of the
system are finally caused by deformation due to the fact that the imaging system bears a load or a mounting foundation of the imaging system is deformed and the like, so that measuring accuracy is improved; and meanwhile, non-disturbance measurement of the ground surface settlement parameters is realized, so that passing of vehicles inside is not affected for large structures such as a tunnel, and therefore, the measuring device has relatively high popularization and application value.