摘要
采用ANSYS软件建立西安钟楼有限元模型,与既有研究成果对比,验证了钟楼有限元模型的准确性。基于此模型分析了地震动输入峰值、不同维度地震动、建筑年代等参数对钟楼木结构加速度、位移、基底剪力等地震响应的影响规律。分析结果表明:随着地震动输入峰值的增大,结构加速度、位移响应均显著增大;地震波的竖向分量对结构具有一定的影响力,但是水平向地震对钟楼木结构的影响占主要部分;而随着钟楼建造时间增加,结构刚度下降,自振周期变长,在相同地震动作用下位移响应会相应延后,结构基底剪力和加速度峰值呈现下降趋势,但是结构位移峰值逐渐增加。
The finite element model of Xi’an Bell Tower was established by ANSYS software,and compared with the existing research results,the accuracy of the finite element model of Bell Tower was verified.Based on this model,the influences of parameters such as ground motion input peak,different dimensions and building age on the seismic response of the bell tower wood structure such as acceleration,displacement and base shear force are analyzed.The analysis results show that with the increase of ground motion input peak,the structural acceleration and displacement response increase significantly;the vertical component of seismic wave has certain influence on the structure,but the damage of horizontal earthquake to the bell tower wood structure is the main part.With the increase of the construction time of the clock tower,the structural rigidity decreases,the natural vibration period becomes longer,and the displacement response will be delayed correspondingly under the same ground motion.The shearing force and acceleration peak of the structural base show a downward trend,but the structural displacement peak gradually increases.
作者
罗云
黄超群
李浩
LUO Yun;HUANG Chaoqun;LI Hao(School of Civil Engineering of Guangzhou University, Guangdong 510006, China)
出处
《结构工程师》
北大核心
2019年第4期90-97,共8页
Structural Engineers
基金
国家自然科学基金项目(51778162,51878191)
关键词
古木结构
地震响应
建造年代
输入维度
ancient wood structure
seismic response
construction age
input dimension
