摘要
为了研究高阶效应对高层建筑振动响应的影响,本研究揭示了高层建筑的高阶效应工作机理,并利用ETABS有限元分析软件分别建立了同一结构的抗震与隔震体系,并对比了不同体系在高阶效应下的振动响应情况。研究表明:该结构的抗震与隔震体系均产生了较严重的高阶效应。在高阶效应作用下,抗震体系和隔震体系建筑顶部加速度放大系数分别达到了2.051和4.101;与抗震结构相比,采用隔震技术可以明显的降低高阶效应对结构的影响,最大加速度和相对位移响应分别减小了49.98%和47.48%,但在特定的地震条件下仍有明显的高阶效应。研究成果可为高层建筑设计应用提供理论保障和技术支持。
In order to study the effect of high-order effect on the vibration response of high-rise buildings,this research reveals the working mechanism of high-order effect of high-rise buildings,and uses ETABS finite element analysis software to establish the seismic and isolation systems of the same structure respectively,and compares the vibration response of different systems under the high-order effect.The results show that the aseismic and isolation systems of the structure produce serious high-order effects.Under the action of high-order effect,the acceleration amplification coefficients of seismic system and isolation system are 2.051 and 4.101 respectively.Compared with the aseismic structure,the maximum acceleration and relative displacement response are reduced by 49.98%and 47.48%respectively.However,there are still obvious high-order effects under specific earthquake conditions.The research results can provide theoretical support and technical support for high-rise building design and application.
作者
陈晓东
Chen Xiaodong(Fujian Fuqu Construction Engineering Co.,Ltd.,Xiamen,China)
出处
《科学技术创新》
2023年第17期133-136,共4页
Scientific and Technological Innovation
基金
福建省住建厅科学技术计划项目(2022-K-247)。
关键词
高层建筑
隔震结构
数值模拟
高阶效应
high-rise buildings
isolation structure
numerical simulation
higher order effect
