This paper presents a study on the effectiveness of two forms of reinforced grout confining systems for hollow concrete block masonry. The systems considered are: udud(1) a layer of grout directly confining the unreinforced masonry, and; udud(2) a layer of grout indirectly confining the unreinforced masonry through block shells. ududThe study involves experimental testing and finite-element (FE) modeling of six diagonally loaded masonry panels containing the two confining systems. The failure mode, the ultimate load, and the load-deformation behaviors of the diagonally loaded panels were successfully simulated using the finite-element model. In-plane shear strength and stiffness of the masonry thus determined are used to evaluate some selected models of the confined masonry shear including the strut-and-tie model reported in the literature. The evaluated strut width is compared with the prediction of the FE model and then extended for rational prediction of the strength of confined masonry shear walls.
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机译:本文对空心混凝土砌块砌体的两种形式的灌浆约束系统的有效性进行了研究。所考虑的系统为: ud ud(1)一层灌浆,直接限制了未加固的砌体,以及 ud ud(2)一层灌浆通过砌块壳体间接限制未加固的砌体。 ud ud这项研究涉及包含两个约束系统的六个对角加载的砌体面板的实验测试和有限元(FE)建模。使用有限元模型成功地模拟了对角加载面板的破坏模式,极限载荷和载荷-变形行为。如此确定的砌体的面内剪切强度和刚度用于评估承压砌体剪的一些选定模型,包括文献中报道的支柱-拉杆模型。将评估的支杆宽度与有限元模型的预测进行比较,然后将其扩展以合理预测承压砌体剪力墙的强度。
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