Response modification factor due to ductility of screen-grid ICF wall system in high seismic risk zones
Response modification factor due to ductility of screen-grid ICF wall system in high seismic risk zones
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DOI：
10.1007/s12205-016-0083-7
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发表时间：
2017-01-01
影响因子：
2.2
通讯作者：
Zahrai, Seyed Mehdi
中科院分区：
文献类型：
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作者：
Asadi, Pouria;Madandoust, Rahmat;Zahrai, Seyed Mehdi
绝缘混凝土形式（ICF）包括永久模板，最常见的是膨胀聚苯乙烯泡沫。绝缘混凝土模板为混凝土创造了一个模板，作为永久的建筑绝缘材料。在大地震中，建筑物通常会发生塑性变形；然而，由于执行非线性分析的复杂性，规范通过折减因子(R)考虑非弹性行为的影响，而允许线性分析。目前还没有关于网栅ICF （SGICF）墙体系统的折减系数的研究。本研究采用ABAQUS 6.12中的非线性静力分析（Pushover）和混凝土损伤塑性本构模型（CDP）来确定SGICF墙体体系的延性折减系数。然后将计算结果与实验模型进行了比较。研究结果表明，这种结构体系在地震高发区具有可接受的延性。
Insulating Concrete Form (ICF) includes permanent formworks, most commonly expanded polystyrene foam. Insulating Concrete Forms create a formwork for concrete that stays in place as permanent building insulation. Structures usually experience plastic deformations during major earthquakes; however, because of complexity of performing non-linear analysis, codes consider effects of inelastic behavior through reduction factors (R) and allow linear analysis instead. Reduction factor has not been presented for Screen-Grid ICF (SGICF) wall system until now. In this research, reduction factors due to ductility of SGICF wall systems are determined by non-linear static analysis (Pushover) and Concrete Damaged Plasticity constitutive model (CDP) in ABAQUS 6.12. Then the results are compared to those of the experimental model. Results from this research show that such structural system, if used in high seismic risk zones, has an acceptable ductility.