Towards seismic performance quantification of viscous damped steel structure: Site-specific hazard analysis and response prediction
Towards seismic performance quantification of viscous damped steel structure: Site-specific hazard analysis and response prediction
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粘性阻尼钢结构抗震性能量化：特定场地危害分析和响应预测
DOI：
10.1016/j.engstruct.2023.115677
复制
发表时间：
2023
影响因子：
5.5
通讯作者：
Ricles, James M.
中科院分区：
文献类型：
--
作者：
Dong, Baiping;Ricles, James M.
基于性能的地震工程（PBEE）强调可预测的性能，在量化地震风险和促进更好地设计建筑环境以实现地震恢复力方面的至关重要性已得到广泛认可。以及阻尼系统的使用，即，结合有附加阻尼装置的结构已经被认为是增加结构对地震的恢复力的有效结构发展。本文提出了一个统一的危险谱（UHS）的基础上，特定的场地地面运动选择程序，实现PBEE框架，地震灾害与结构性能的结构与可变的动力特性。这种地面运动选择过程占可变结构动力特性的影响，对危险特性的结构阻尼系统。一个典型的建筑工地，其现场的具体危险的概率地震危险性分析（PSHA）是一致的，从ASCE/SEI 7-10的设计图的风险为目标的危险，被选中的程序的实施。选取了三组40个不同烈度的地震动，对一个具有非线性粘滞阻尼系统的原型结构进行了时程动力分析。评估的主要工程需求参数（EDP）的概率分布，包括层间位移，剩余层间位移，地板速度，地板加速度。结果表明，在一个典型的网站补充非线性粘滞阻尼器的建筑结构的主要EDPs可以估计使用对数正态概率分布，并建议基于UHS的场地特定的地面运动选择程序是至关重要的性能评估的结构在PBEE框架中的可变动力特性。
With an emphasis on predictable performance, the paramount importance of performance-based earthquake engineering (PBEE) in quantifying earthquake risks and facilitating the better-informed design of the built environment to achieve earthquake resilience has been widely acknowledged. And the uses of damping systems, i.e., structures incorporated with supplemental damping devices, have been recognized as an effective structural development to increase the resilience of structures to earthquakes. This paper presents a uniform hazard spectrum (UHS) based site-specific ground motion selection procedure, to implement the PBEE framework to relate earthquake hazard to structural performance for structures with variable dynamic properties. This ground motion selection procedure accounts for the effect of variable structural dynamic properties on hazard characterization for structures with damping systems. A paradigm building site, on which the site-specific hazard from the probabilistic seismic hazard analysis (PSHA) is consistent with the risk-targeted hazard from the design maps of ASCE/SEI 7-10, is selected for the implementation of the procedure. Three suites of 40 ground motions representing various hazard intensities at the building site are selected for time history dynamic analysis of a prototype structure with nonlinear viscous damping system. Evaluated is the probability distribution of major engineering demand parameters (EDPs) including story drift, residual story drift, floor velocity, and floor acceleration. The results demonstrated that the major EDPs of a building structure with supplemental nonlinear viscous dampers at a paradigm site can be estimated using the lognormal probability distribution, and the proposed UHS-based site-specific ground motion selection procedure is critical to the performance assessment of structures with variable dynamic properties in the PBEE framework.
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