沿海地区隔震结构减震与抗风优化设计  

Optimized design of seismic isolation structure for coastal areas with seismic reduction and wind resistance

作　　者：李飞燕[1] 钟健 金捷 曹辉仔 李沙 苏明双 LI Feiyan

机构地区：[1]厦门大学嘉庚学院土木工程学院,福建漳州363105 [2]福建省建筑工程技术中心,福建福州350007 [3]福建省建设工程造价管理总站,福建福州350025 [4]厦门坤能工程建设有限公司,福建厦门361010 [5]厦门锦祥建设工程有限公司,福建厦门361011 [6]厦门保顺建设有限公司,福建厦门361022

出　　处：《福建建设科技》2023年第2期15-19,共5页Fujian Construction Science & Technology

基　　金：福建省住房和城乡建设厅科技研究开发项目(2023-K-135);厦门大学嘉庚学院校企合作项目(JGH2022033)。

摘　　要：沿海风载较大地区部分隔震结构的设计无法同时满足减震目标与隔震层抗风要求,为此设计了专用的抗风支座。以某实际工程为背景,建立多种不同隔震层布置下的结构计算模型并进行时程分析,对隔震结构的减震与抗风进行优化设计,最后通过有限元静力加载分析验证了抗风支座的有效性。计算结果表明:通过合理选择铅芯支座和抗风支座的数量并进行优化布置,可以解决沿海风载较大地区隔震结构减震效果与抗风设计难以协调的问题;建议设计时铅芯支座提供的水平承载力接近风载下隔震层的水平剪力标准值;抗风支座能满足设计要求,即风载和小震下参与隔震层工作,中震破坏退出工作。The design of some isolated structures in coastal areas with large wind load can not meet the requirements of both the seismic reduction target and the wind resistance of the isolation layer,so a special wind-resistant support is designed.Taking a practical project as the background,the structural models with different isolation layer arrangements are established and time history analysis is carried out to optimize the design of vibration reduction and wind resistance of the isolation structure.Finally,the validity of the wind-resistant support is verified by finite element static loading analysis.The calculation results show that the problem of the coordination between the seismic effect of the isolated structure and the wind resistance design in the coastal areas with large wind load can be solved by selecting the number of lead core supports and wind-resistance supports and optimizing the layout;It is suggested that the horizontal bearing capacity provided by the lead core support should be close to the standard value of horizontal shear force of the isolation layer under wind load;The wind-resistant support can meet the design requirements,that is,participate in the work of the isolation layer under wind load and small earthquake,and withdraw from the work due to medium earthquake damage.

关 键 词：减震与抗风 优化设计 抗风支座 隔震结构 

分 类 号：TU352.12[建筑科学—结构工程] TU352.2