Failure Assessment of Lightly Reinforced Floor Slabs. II: Analytical Studies
Failure Assessment of Lightly Reinforced Floor Slabs. II: Analytical Studies
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DOI：
10.1061/(asce)st.1943-541x.0000445
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发表时间：
2011-05
期刊：
影响因子：
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通讯作者：
K. Cashell;A. Elghazouli;B. Izzuddin
中科院分区：
文献类型：
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作者：
K. Cashell;A. Elghazouli;B. Izzuddin
本文介绍了楼板的极限响应的数值和分析评估。简化的分析模型和有限元模拟进行了描述和验证，对实验结果中提出的配套文件。简化的分析模型占膜行动和相关的机制失败的楼板钢筋断裂或压缩破碎的混凝土。在这方面，材料性能的显着影响，包括粘结强度，被认为是在模型中，并详细描述。一个详细的非线性有限元模型也提供了进一步验证的简化方法，并促进进一步了解的整体响应。这项研究的结果和观察提供了一个洞察的关键因素，管理的最终行为。最后，在高温条件下的应用模型，以证明其普遍适用性和可靠性。
This paper describes numerical and analytical assessments of the ultimate response of floor slabs. Simplified analytical models and finite-element simulations are described and validated against the experimental results presented in the companion paper. The simplified analytical model accounts for membrane action and the underlying mechanisms related to failure of floor slabs by either reinforcement rupture or compressive crushing of the concrete. In this respect, the significant influence of material properties, including bond strength, is considered in the model and described in detail. A detailed nonlinear finite-element model is also employed to provide further verification of the simplified approach and to facilitate further understanding of the overall response. The results and observations of this study offer an insight into the key factors that govern the ultimate behavior. Finally, the models are applied under elevated temperature conditions to demonstrate their general applicability and reliability.