简谐荷载作用下拱型结构线性动力稳定性

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：On linear dynamic stability of arch structure under harmonic load 中文刊名：山西建筑 英文刊名：Shanxi Architecture 作者：吴东平 英文作者：WU Dong-ping(Wuhan University of Science and Technology ; Wuhan 430060 ; China) 中文关键词：拱型结构 ; 动力稳定 ; 谐振动 英文关键词：arch structure ; dynamic stability ; harmonic vibration 出版日期：2012-08-01 机构：武汉科技大学; 年：2012 期：22 出版单位：山西建筑

摘要

通过分析发现拱型结构对动荷载的响应较为明显,以单拱为例,取1/3,1/5,1/7三种矢跨比的结构,在水平、竖向两种荷载作用下,分析了结构的线性谐响应结果,得出单拱自振频率分布均匀、密集、中间无"断层",带宽较宽,类似白噪声;同时共振区段分布多,发生共振强度大,不同矢跨比对简谐荷载的动力响应程度不同,其中1/5矢跨比响应程度最大。
The study points out the response of the arch structure for the dynamic loading is obvious by analyzing,indicates the linear harmonic response results of the structure under the horizontal and vertical loading effects by taking the single arch as the example and selecting 1/3,1/5 and 1/7 rise-span ratio structures,and concludes the single arch has even and dense natural frequency distribution without faults in the middle and has wide bandwidth similar to white noise,and illustrates it many distributions of the resonance section,large resonance strength,various rise-span ratio has different dynamic response of the harmonic loading,besides 1/5 rise-span ratio has the largest response.

引文

[1]欧进萍.结构随机振动[M].北京:高等教育出版社,2001.
    [2]李国豪.工程结构抗震动力学[M].上海:上海科学技术出版社,1980.
    [3]林家浩,李建俊.结构受多点非平稳随机地震激励的响应[J].力学学报,1995,27(5):567-576.
    [4]王君杰.多点多维地震动随机模型及结构的反应谱分析方法[R].国家地震局工程力学研究所,1992.
    [5]薛素铎.设计用随机振动地震动功率谱模型参数的取值[M].南京:东南大学出版社,2002:148-153.
    [6]Kiureghian A D,Neuenhofer A.Response spectrum method for multi-support seismic excitations[J].Earthquake Engineering and Structure Dynamics,1992(21):713-740.
    [7]李宏男,王苏岩.多维地震动作用下非对称结构扭转耦联随机反应分析[J].建筑结构学报,1992,13(6):12-20.