Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling.
Seismic Response of Star-Type Grid Concrete Wall Structure by Numerical Modeling.
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星型网格混凝土墙结构地震响应的数值模拟
DOI：
10.3390/ma15238519
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发表时间：
2022-11-29
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水泥聚苯壳模网架混凝土墙体以其较高的承重和保温性能在中低层建筑中得到了广泛的应用。将填充墙简化为等效斜撑模型，构造了一种星形网格混凝土墙。为研究星型网格混凝土剪力墙结构的地震反应和受力性能，对该结构进行了全过程的时程数值模拟。分析了该结构体系的加速度、变形、滞回曲线和破坏模式等典型结果。结果表明，星型网格混凝土墙结构具有良好的抗震性能，包括耗能能力。该结构具有较高的抗侧刚度，在大震作用下能在弹性状态下工作。因此，它对近断层地震动具有更高的频率分量更敏感。同时，结构层间位移角小于结构在特大地震作用下的较轻破坏限值，结构呈现剪切变形。开孔对破坏模式有显著影响，带窗（小长宽比小于1.11）的星型网格混凝土墙符合剪切破坏，带门（长宽比为2.5）的墙符合弯剪破坏。斜撑可以分散墙体特别是格构梁的应力，并通过格构柱有效地抵抗侧力，提高结构体系的延性和整体性。
Cement polystyrene shell mold (CPSM) grid concrete walls have been widely applied in the construction of low and mid-rise buildings with higher load-bearing and insulation properties. A star-type grid concrete wall was constructed based on the infill wall simplified to an equivalent diagonal bracing model. To investigate the seismic responses and behavior of a star-type grid concrete wall structure, an overall time-history numerical simulation was carried out in this paper. Typical results, including acceleration, deformation, hysteresis curve and failure pattern of this novel construction system, were interpreted. Results indicate that the star-type grid concrete wall structure has satisfactory seismic performance, including energy dissipation capacity. The structure has higher lateral stiffness and can work in an elastic state under major earthquakes. Accordingly, it is more sensitive to near-fault ground motion with higher frequency components. Meanwhile, the structural inter-story drift angle is less than the limit value of lighter damage when subjected to a super-major earthquake, and the structure presents shear deformation. The openings significantly affect the failure mode, the star-type grid concrete wall with a window (a small aspect ratio less than 1.11) conforms to shear failure, and the wall with a door (aspect ratio of 2.5) conforms to bending-shear failure. The diagonal bracing can distribute the stress in the wall, especially the concrete lattice beam, and effectively resist the lateral forces via the concrete lattice column, improving the ductility and integrity of the structural system.
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DOI：
10.3390/ma15134412
发表时间：
2022-06-22
期刊：
Materials (Basel, Switzerland)
影响因子：
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影响因子：
2.2
作者：
Asadi, Pouria;Madandoust, Rahmat;Zahrai, Seyed Mehdi
通讯作者：
Zahrai, Seyed Mehdi
影响因子：
6.4
作者：
Qiao, Wentao;Kane, Jialing;Wang, Zexiong
通讯作者：
Wang, Zexiong
不同类型膨胀聚苯乙烯颗粒水泥格子混凝土墙体抗震性能试验及数值模拟研究
DOI：
10.3390/ma14113082
发表时间：
2021-06-04
期刊：
Materials (Basel, Switzerland)
影响因子：
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作者：
Cao X;Li X;Tang B
通讯作者：
Tang B
影响因子：
4.1
作者：
Asteris, P. G.;Antoniou, S. T.;Chrysostomou, C. Z.
通讯作者：
Chrysostomou, C. Z.