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首页> 外文期刊>Bulletin of earthquake engineering >Estimation of seismic response parameters and capacity of irregular tunnel-form buildings
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Estimation of seismic response parameters and capacity of irregular tunnel-form buildings

机译：估计地震反应参数和不规则隧道楼宇的能力

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摘要

Insufficient information about the seismic performance of tunnel-form buildings and limited relevant design codes and standards are the main barriers towards application of these systems in seismically active areas. Vertical and horizontal irregularity of typical tunnel-form buildings is another cumbersome challenge restricting the application of these systems. To address these issues, this study aims to evaluate the seismic behaviour of tunnel-form buildings with horizontal irregularity and develop appropriate design methodologies. Based on the results of 3, 5, 7 and 10-storey buildings, new response modification factors are proposed as a function of seismic demand and expected performance level. Fragility curves are also derived for various levels of intensity, and simple equations are introduced to estimate uncoupled frequency ratios. The results, in general, demonstrate the flexible torsional behaviour of irregular tunnel-form structures and their adequate seismic resistance capacity. The buildings studied herein, managed to satisfy the immediate occupancy performance requirements under design-basis earthquake, which implies that the plan regularity requirement for tunnel-form buildings in seismic codes may be too conservative. Moreover, it is concluded that using response modification factor equal to 5 can generally result in sufficient stability and adequate performance level under both design basis and maximum considered earthquake scenarios.
机译：有关隧道形式建筑物的地震性能的信息不足，有限的相关设计代码和标准是在地震活动区域应用这些系统的主要障碍。典型的隧道形状建筑的垂直和水平不规则是另一个繁琐的挑战，限制了这些系统的应用。为了解决这些问题，本研究旨在评估隧道形式建筑物的地震行为，具有横向不规则性，并制定适当的设计方法。基于3,5,7和10层建筑的结果，提出了新的响应修改因子作为地震需求和预期性能水平的函数。脆性曲线也导出用于各种水平的强度，并引入简单的方程来估计解耦频率比。结果一般来说，展示了不规则隧道形状结构的柔性扭转行为及其充分的地震阻力能力。本文研究的建筑物，设法满足设计基地震下的直接占用性能要求，这意味着地震代码中隧道形式建筑的计划规律要求可能过于保守。此外，得出结论，使用等于5的响应修改因子通常可以通过设计基础和最大考虑地震场景来导致足够的稳定性和足够的性能水平。

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