基于瞬态激励的岩样阻尼比试验研究  

Experimental Study on Damping Ratio of Rock Samples Based on Transient Excitation

作　　者：郑世夺 樊青山 张树强 刘涛 刘卫然[4] ZHENG Shi-duo;FAN Qing-shan;ZHANG Shu-qiang;LIU Tao;LIU Wei-ran(Hebei Construction Engineering Quality Inspection Center Co.,Ltd.,050200,Shijiazhuang,Hebei,China;Fuping County Housing and Urban Rural Development Bureau,073200,Baoding,Hebei,China;Hebei Jingtie Survey and Design Institute Co.,Ltd.,050051,Shijiazhuang,Hebei,China;College of Architectural Engineering,Hebei University of Science and Technology,050091,Shijiazhuang Hebei,China)

机构地区：[1]河北省建筑工程质量检测中心有限公司,河北省石家庄市050200 [2]阜平县住房和城乡建设局,河北省保定市073200 [3]河北京铁勘测设计院有限公司,河北省石家庄市050051 [4]河北科技大学建筑工程学院,河北省石家庄市050091

出　　处：《河北水利电力学院学报》2023年第2期40-46,共7页Journal of Hebei University Of Water Resources And Electric Engineering

基　　金：河北省建设科技研究指导性计划项目(2021-2091)。

摘　　要：岩石阻尼比是工业和民用建筑地基基础工程设计重要的动力特性参数之一,目前尚未有该指标明确的试验规程。为了掌握某地核电站机组核岛区基岩的阻尼比,我们结合工程实际情况,采用瞬态激励使岩样产生自由振动,通过在岩样上粘贴应变片和加速度传感器两种方法采集振动信号,通过计算得出了岩样的阻尼比,并对两种采集信号测定的阻尼进行了比较,此研究可为相似工程提供一定参考。The rock damping ratio is one of the important dynamic characteristic parameters in the foundation engineering design of industrial and civil buildings.In order to master the damping ratio of bedrock in the nuclear island area of a nuclear power plant unit,transient excitation is used to make the rock sample generate free vibration in combination with the actual situation of the project.Vibration signals by pasting strain gauges and acceleration sensors on the rock sample are collected,the damping ratio of the rock sample through calculation is obtained,and the damping measured by the two collected signals are compared.This study provides some reference for similar projects.

关 键 词：基岩 动力特性 瞬态激励 阻尼比 

分 类 号：TU435[建筑科学—岩土工程] TM623[建筑科学—土工工程]