Seismic Design of Friction-Damped Precast Concrete Frame Structures
Seismic Design of Friction-Damped Precast Concrete Frame Structures
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DOI：
10.1061/40753(171)199
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发表时间：
2005-04
影响因子：
5.6
通讯作者：
Brian G. Morgen;Y. Kurama
中科院分区：
文献类型：
--
作者：
Brian G. Morgen;Y. Kurama
本文研究了采用摩擦阻尼器辅助耗能的无粘结预应力混凝土框架结构的抗震设计。描述了确定摩擦阻尼器滑动力和框架中所需的后张钢面积以满足规定的侧向强度和能量耗散要求的程序。建议的设计程序假设框架的横向强度要求是通过等效横向力下结构的线弹性分析获得的。本文对摩擦阻尼预制混凝土梁-柱框架和多层框架结构在侧向荷载作用下进行了非线性反复循环分析，以评价其设计过程，并找出可能需要改进的地方。分析结果表明，摩擦阻尼预制混凝土框架可以实现显着的消能水平，同时保持了很大的水平，由于后张拉力的自定心能力。
This paper is on the seismic design of unbonded post-tensioned precast concrete frame structures that use friction dampers for supplemental energy dissipation. A procedure is described to determine the friction damper slip force and the area of post-tensioning steel needed in a frame to satisfy prescribed lateral strength and energy dissipation requirements. The proposed design procedure assumes that the lateral strength requirements for the frame have been obtained from a linear elastic analysis of the structure under equivalent lateral forces. Nonlinear reversed cyclic analyses of friction-damped precast concrete beam-column subassemblies and multi-story frame structures under lateral loads are conducted to evaluate the design procedure and to identify areas where improvement may be needed. The analytical results show that friction-damped precast concrete frames can achieve significant energy dissipation levels while maintaining a large level of self-centering capability due to the post-tensioning force.