拱圈模型动力特性研究与分析  

Research and Analysis on the Dynamic Properties of Arch-ring Model

作　　者：王莉英[1] 

机构地区：[1]太原理工大学,山西太原030024

出　　处：《科技情报开发与经济》2012年第1期132-134,共3页Sci-Tech Information Development & Economy

摘　　要：拱形梁是工程实际中常见的结构形式,大多数桥梁、隧道都采用拱形。其内力和应力往往比较复杂,难以在理论上得到准确答案。通过试验(采用锤击法)对拱圈模型进行模态分析,通过两方向振动(垂直向和径向)相互比较来研究和分析它的动力特性。试验表明,垂直向和径向振动时其频率基本变化不大,振型基本一致。Arched beam,which is a common type of structure in engineering practice,is adopted in most of bridge beams and tunnels.Its internal force and stress are often more complicated and are hard to get accurate answers in theory.This paper makes the model analysis on the arch-ring model through the test （adopting hammering method）,and studies and analyzes its dynamic properties through inter-comparison of vertical and radial vibrations.The test shows that its frequency has little change in vertical and radial vibrations.

关 键 词：动力特性 拱圈模型 模态分析 锤击法 

分 类 号：U441[建筑科学—桥梁与隧道工程]