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Finite-element modeling of the seismic response of reinforced masonry wall structures

机译:增强砌体墙体结构抗震响应的有限元建模

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Modern design codes and performance-based earthquake engineering rely heavily on computational tools to assess the seismic performance and collapse potential of structural systems. This paper presents a detailed finite-element (FE) modeling scheme for the simulation of the seismic response of reinforced masonry (RM) wall structures. Smeared-crack shell elements are combined with cohesive discrete-crack interface elements to capture crushing and tensile fracture of masonry. Beam elements incorporating geometric as well as material nonlinearity are used to capture the yielding, buckling, and fracture of the reinforcing bars. The beam elements are connected to the shell elements through interface elements that simulate the bond-slip and dowel-action effects. An element removal scheme is introduced to enhance the robustness and accuracy of the numerical computation. The material models and interface elements have been implemented in a commercial FE analysis program. The modeling scheme is validated with data from quasi-static cyclic tests on RM walls as well as with results from shake-table tests on RM building systems.
机译:现代设计代码和基于性能的地震工程依赖于计算工具来评估结构系统的地震性能和塌陷电位。本文提出了一种详细的有限元(FE)建模方案,用于模拟增强砌体(RM)壁结构的地震响应。涂抹裂缝壳元件与粘性离散裂缝界面元素相结合,以捕获砌体的破碎和拉伸骨折。包含几何和材料非线性的光束元件用于捕获加强杆的屈服,屈曲和断裂。梁元件通过模拟粘合滑动和定位效应的接口元件连接到壳体元件。引入了元素去除方案以增强数值计算的鲁棒性和准确性。材料模型和接口元件已在商业FE分析程序中实现。使用RM墙壁上的准静态循环测试的数据验证了建模方案,以及RM建筑系统上的摇架测试结果。

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