Optical Evaluation of Vibrations in a Roof by the LPD Method  

作　　者：Aníbal Valera Guido Castillo Kevin Mejía 

机构地区：[1]Facultad de Ciencias,Universidad Nacional de Ingeniería,Av.Tupac Amaru,Lima 15333,Perú

出　　处：《Journal of Civil Engineering and Architecture》2024年第11期540-544,共5页土木工程与建筑（英文版）

摘　　要：In this work,we present the results of the optical evaluation of resonance vibrations in a conventional roof.On this occasion,we took advantage of having an ordinary booth near the laboratory,making it easier for us to conduct this evaluation.The roof in question has a square geometry and is apparently made of concrete.Following our usual LPD(laser photo deflection)procedure,of exciting the vibrations of the structure through sound and detecting the response optically,we obtain by resonance the first 6 roof’s Eigen oscillations,the same ones that are identified as Modes(1,1),(1,2),(2,2),(1,3),(2,3)and(3,3).The occurrence of these modes in this work is justified in a first approximation through the classical acoustic resonator theory.

关 键 词：STRUCTURAL vibrations RESONANCE SOUND EXCITATION LPD 

分 类 号：TU19[建筑科学—建筑理论]