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Seismic performance assessment of new dry‐assembled prefabricated composite shear wall system with beam‐only connection
The Structural Design of Tall and Special Buildings ( IF 2.4 ) Pub Date : 2020-03-12 , DOI: 10.1002/tal.1729
Dayang Wang 1, 2 , Yongshan Zhang 1 , Haishen Chen 1
Affiliation  

Two types of prefabricated composite shear wall systems were proposed using modular and separated dry‐assembled ways, respectively. The seismic performance of four composite shear wall systems, two for the modular assembly way and two for the separated assembly way, was numerically evaluated including failure mode, loading and deformation capacities, hysteresis behavior, ductility, stiffness degradation, and energy dissipation. The nonlinear numerical simulations were conducted based on plastic‐damage constitutive laws for both concrete and steel materials using ABAQUS platform, which were further verified by the experimental investigations. The results showed that the mechanical performance of the modular assembly system is superior than that of the separated assembly system. The former exhibited good bearing and deformation capacities: The peak force is enhanced by 50% on average, the ultimate drift ratio reaches an average value of 3.7%, and the ductility coefficient has an average value of 10.5. As for the same assembly way, the prefabricated system with inner steel plate appeared better seismic properties compared to that with outer steel plate. Furthermore, the modular assembly system behaved prominent energy dissipation capacity with plentiful hysteresis loops. The equivalent damping ratio of this system reaches 15.93% at the drift ratio of 2%, which is the limit drift ratio for normal buildings in rare earthquakes.

中文翻译:

新型纯梁组合预制预制组合式剪力墙系统的抗震性能评估

分别提出了两种类型的预制复合剪力墙系统,分别采用模块化和干式分离的方式。对四个复合剪力墙系统的抗震性能进行了数值评估,其中两个用于模块化组装方式,两个用于独立组装方式,包括破坏模式,载荷和变形能力,滞后行为,延性,刚度退化和能量耗散。使用ABAQUS平台,基于塑性和损伤本构关系,对混凝土和钢材进行了非线性数值模拟,并通过实验研究进行了验证。结果表明,模块化组装系统的机械性能优于分离式组装系统。前者具有良好的承载力和变形能力:峰值力平均提高了50%,极限漂移率达到了3.7%的平均值,延性系数的平均值为10.5。对于相同的组装方式,内钢板的预制系统比外钢板的预制系统具有更好的抗震性能。此外,模块化组装系统具有显着的耗能能力,并具有丰富的磁滞回线。当漂移率为2%时,该系统的等效阻尼率达到15.93%,这是罕见地震中普通建筑物的极限漂移率。与外钢板相比,内钢板预制系统的抗震性能更好。此外,模块化组装系统具有显着的耗能能力,并具有丰富的磁滞回线。当漂移率为2%时,该系统的等效阻尼率达到15.93%,这是罕见地震中普通建筑物的极限漂移率。与外钢板相比,内钢板预制系统的抗震性能更好。此外,模块化组装系统具有显着的耗能能力,并具有丰富的磁滞回线。当漂移率为2%时,该系统的等效阻尼率达到15.93%,这是罕见地震中普通建筑物的极限漂移率。
更新日期:2020-03-12
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