STANDING WAVES IN ENGINEERING SEISMOLOGY

Abstract

The paper presents a new approach of detailed engineering seismological investigation of buildings, bridges, dams, etc. by the method of standing waves using low-channel thin-route instruments. Conversion of standing waves from a point to another, which is possible to a predetermined accuracy, allows obtaining simultaneous records of standing waves on the basis of microseisms recorded at different times at each point of an array of any density. Observation systems and conversion algorithms have specific features in various types of engineering structures. Experiments show that the new method enables efficient and cheap testing of the physical state of structures and detection of defects from waveforms and spatial distribution of phases in detailed images of wavefields of standing waves.