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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Modeling of a shake-table tested retrofitted wood-frame building subjected to subduction ground motions
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Modeling of a shake-table tested retrofitted wood-frame building subjected to subduction ground motions

机译：摇动台的建模测试了改造的木制框架建筑物经受俯冲地面运动

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In 2004 , the provincial government of British Columbia in Canada initiated a seismic retrofit program to quantify the seismic risk and to implement a seismic mitigation plan over 750 school buildings located in high seismic hazard regions of the province. The current phase of the program focuses on conducting a series of full-scale shake-table tests of a retrofitted two-story wood-frame school building prototype as part of the performance-based Seismic Retrofit Guidelines (SRG). This paper presents the numerical modeling and seismic assessment of the tested building. A detailed two-dimensional model and a computationally efficient three-dimensional model were developed. By performing nonlinear dynamic analyses, both models predicted the building responses accurately when compared with the experimental tests in terms of roof drift, energy dissipation, and global hysteresis behavior. The retrofitted school building showed a large overstrength that mainly came from the unblocked walls. Empirical equations based on the FEMA P-807 guidelines and a simplified method developed in the SRG, called Toolbox Approach were investigated for estimating its overstrength and ultimate capacity. Finally, following a performance-based tri-hazard probabilistic methodology proposed in the SRG, the seismic risk of the building was assessed by performing incremental dynamic analysis using 30 ground motion records that were selected based on a multiple event-based conditional mean spectrum (CMS) approach. The results indicated that the subduction motions posed higher probability of drift exceedance and collapse risk of the retrofitted school building than crustal and subcrustal motions.
机译：2004年，加拿大不列颠哥伦比亚省省政府发起了一种地震改造方案，以量化地震风险，并落实省高地震危险地区的750个学校建筑物的地震减灾计划。该计划的当前阶段侧重于开展一系列完整的两层木制框架学校建筑原型的全尺寸摇动表测试，作为基于性能的地震改造指南（SRG）的一部分。本文介绍了测试建筑的数值建模和地震评估。开发了详细的二维模型和计算有效的三维模型。通过执行非线性动态分析，两种模型在与屋顶漂移，能量耗散和全局滞后行为方面的实验测试相比时准确地预测了建筑物响应。改造的学校建筑展示了一个主要来自畅通无阻的墙壁的过度长度。研究了基于FEMA P-807指南的经验方程和SRG中开发的简化方法，称为工具箱方法，估计其过度高度和最终的容量。最后，在SRG中提出的基于性能的三危险概率方法之后，通过使用基于多个事件的条件平均光谱选择的30个地面运动记录进行增量动态分析来评估建筑物的地震风险（CMS ） 方法。结果表明，俯冲动作提出了更高的漂移的概率，而被改装的学校建设的崩溃风险大于地壳和亚特征。

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