| 摘要 |
FIELD: construction. ^ SUBSTANCE: invention relates to the field of construction, in particular to method for detection of changes in deflected mode of building or structure components. Method includes installation of three-component accelerometres, measurement of spatial oscillations and development of dynamic load. Measurement of spatial oscillations is carried out in a period of time varied by operator. Sources of dynamic load are established permanently. Areas for location of accelerometres and sources of dynamic load, and also their capacity is selected by means of numerical calculation of three-dimensional model of a building or structure. Also dynamic characteristics of structure elements are identified. Control over process of dynamic load and measurement of dynamic response of structure elements are carried out under computer management. Change in deflected mode of structures is detected with application of MAC criterion of defects detection. Alarm sound message is produced to workplace of operator while displaying structural elements that changed into emergency condition on computer screen. ^ EFFECT: improved efficiency of measurements and evaluation of technical condition of structures at any moment of time. ^ 4 dwg, 1 ex |
