Study On Dynamic Response Of Masonry Structure Buildings Under Blasting Seismic Wave

Firstly, blasting vibration seismic wave transmission laws & blasting seismic forecast & blasting vibration safety criterion & controlling of blasting vibration were researched theortically.The paper analyse hazards characteristics of blasting seismic and propose blasting vibration model and the failure mechanism of masonry structure. Study on dynamic response of masonry structure buildings under blasting seismic wave by numerical simulation analysis. Then the paper has made the appraisal about its security under the blasting effect.According to field conditions, work out test program of vibration effects on the masonry structure under blasting seismic. Compendium principle support type for rock loose work By blastmateIII actual multiple measures, applying for ppv regression to particle vibration, single go-off apothecaries and distance by Sadauskas formula which are acceptanced . Get actual regression equation in accordance with project.By the blasting seismic wave spectrum analysis.Get the range of blasting vibration natural frequency on the differential multi-stage excavation of rock corresponding in 30 ~ 50Hz at the actual conditions.More Than the general natural vibration frequency structure of masonry (natural vibration frequencies around 10 Hz).The paper establish a new finite element model of masonry structure, spectrum analysis for the vibration velocity of actual measurement, editing parameter applies for ANSYS. Obtained stress and displacement distribution. That wall and windows of masonry structure buildings under blasting seismic wave cause stress concentration, the displacement of structure increase in accorde with height. And compared with the calculation results. The security of masonry building undering blasting is evaluated.