基于MATLAB使用Newmark-β法分析结构动力响应  

Using Newmark based on MATLAB-β Method for Analyzing Structural Dynamic Response

作　　者：黄建伟 Huang Jianwei(Guangxi Communications Design Group Co.Ltd.,Nanning,Guangxi 530029)

机构地区：[1]广西交通设计集团有限公司,广西南宁530029

出　　处：《江西建材》2023年第9期93-95,98,共4页Jiangxi Building Materials

摘　　要：文中采用MATLAB编程软件,结合非线性数值计算Newmark-β法,对一榀单层单跨钢筋混凝土框架进行地震波作用下线弹性阶段动力响应分析,得到结构的弹性加速度谱、弹性位移谱动力响应,并将计算结果与试验结果对比,旨在通过计算机快速分析结构在多遇小震作用下受到的地震作用效应。计算结果与试验吻合,表明本文的编程结合理论计算方法能分析框架结构在小震作用下的动力响应;当EL centro波峰值加速度达到100 gal时,结构会发生刚度退化现象。In this paper,the MATLAB programming software combined with the nonlinear numerical calculation Newmark-βmethod to analyze the dynamic response of a single-story single-span reinforced concrete frame in the linear elastic stage under the action of seismic waves.Then the dynamic response of the structure,such as the elastic acceleration spectrum and elastic displacement spectrum of the structure,is obtained.Finally,the calculated results are compared with the experiments.The purpose is to quickly analyze the seismic effect of the structure under the action of frequent small earthquakes by computer.The results are in good agreement with the experiments,which show that the proposed programming method combined with theoretical calculation method can analyze the dynamic response of the frame structure under the action of small earthquakes.When the peak acceleration of EL Centro wave reaches 100Gal,the stiffness degradation of thestructureoccurs.

关 键 词：MATLAB编程 NEWMARK-Β法 钢筋混凝土框架 动力响应 EL centro波 

分 类 号：TU375[建筑科学—结构工程] TP312[自动化与计算机技术—计算机软件与理论]