基于性能抗震设计方法与基于承载力抗震设计方法比较研究

Comparitive Study on Performance-Based Seismic Design Method and Bearing Capacity-Based Design Method

通过研究基于性能抗震设计方法与传统基于承载力抗震设计方法的区别,指出基于承载力抗震设计方法可能存在的问题以及性能设计方法的解决之道,同时分析指出承载力并不是影响消能减震结构的最主要因素,结构的模态位移、顶点最大位移及延性与减震结构的等效阻尼比密切相关,位移设计方法是比传统基于承载力抗震设计方法更加适合于消能减震结构的设计方法,最后指出基于位移设计方法存在的问题和未来发展方向。

By comparing the performance-based seismic design method （PBSD） and bearing capacity-based design method （BCBD） , it is concluded that PBSD could obtain better results than BCBD. In the design of the energy dissipation structures （EDS）, force-carrying capacity is not the controlling factor while structural modal displacement, maximum roof displacement and ductility have more influence on the equivalent damping ratio of the EDS. Displacement-based seismic design method （DBSD） is thus a more efficient method in the analysis of passive energy dissipation structures. The existing problems and future research directions of DBSD are put forward at the end of the paper