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金属阻尼器在高烈度区学校建筑的应用研究
付光磊1, 孙锐1, 宋妍2
1.中航天建设工程集团有限公司, 北京 100070;2.国家大剧院, 北京 100031
摘要:
提高学校公共建筑在地震作用下的抗震能力是自汶川地震后一直备受关注的研究课题。高烈度地区对地震设防烈度要求较高,该类建筑的结构抗震设计难度较大。通过对常规框架结构方案及增设金属阻尼器的消能减震方案进行对比分析,发现在地震作用下阻尼器发生剪切变形,小震工况即屈服耗能,能够提供1%的附加阻尼比。相比于传统框架结构,消能减震方案能够有效减小结构构件的尺寸,进而满足学校建筑对于净高的要求。在罕遇地震作用下,该结构体系满足"强柱弱梁"的设计准则,结构位移角满足规范要求,抗震性能较纯框架结构好。研究结论可为金属阻尼器的设计和进一步研究提供参考。
关键词:  学校建筑  金属阻尼器  消能减震  弹塑性分析
DOI:
分类号:P315
基金项目:国家科技重点研发计划(2017YFB1201104-02)资助
Application of Metal Damper in School Architecture in High Intensity Region
Fu Guanglei1, Sun Rui1, Song Yan2
1.China Aviation Construction Engineering Co., Ltd., Beijing 100070, China;2.National Centre for the Performing Arts, Beijing 100031, China
Abstract:
Increasing the seismic capacity of public buildings in schools under earthquake is a critical topic that has attracted much attention since the Wenchuan earthquake. Especially in high-intensity region,the seismic design of such buildings is difficult because of the high seismic intensity. In this paper,through the comparative analysis of the conventional frame structure and the energy dissipation scheme with the metal damper,the shear deformation of the damper occurs under earthquake actions,and the yield energy dissipation under the frequent earthquake condition can provide an additional damping ratio of 1%. Compared with the traditional frame structure,the energy dissipation scheme can effectively reduce the size of the structural members,so as to meet the requirements of school buildings for the net height. Under the action of rare earthquake,the structural system realizes the criterion of "strong column weak beam". And the displacement angle of the structure meets the requirements of the standard. At the same time,the seismic performance is better than that of pure frame structure. Our results can provide reference for the further design and research of metal damper.
Key words:  School building  Metal damper  Energy-dissipated  Elastic-plastic analysis