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Assessment of the load capacity of the anchorage system connecting the textured layer with the structural wall of large slab buildings in the lights of experimental research and FEM analysis

机译:从实验研究和有限元分析的角度评估连接纹理层与大型板式建筑物结构墙的锚固系统的承载能力

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The goal of the article is to compare the results obtained from experimental tests of a new type of anchoring, connecting the texture layer with the structural layer in external wall elements, used in large-panel construction with the results from FEM analysis. Two types of samples were subjected to experimental tests: single-layer uniform concrete and three-layer concrete with embedded point anchors and analogous samples with glued anchors. The test elements used C 12/15 and C 30/37 concrete, 12 mm diameter anchors, made of steel corresponding to the grade of stainless steel screws class 5.8, Sika Anchorfix-1 resin and XPS polystyrene. As for the three-layer samples, when testing, two forces were applied: tearing and shearing due to the detachment of the textured layer. The ANSYS program was used for numerical modelling of the analyzed samples. 3D models were built in which solid elements were used. For steel anchors, the material characteristics were taken as a two-line elasticplastic reinforcement. The Drucker-Prager model was used in the concrete elements, the linear-elastic model was adopted for the resin, and the brittle model according to the linear-elastic fracture mechanics for the polystyrene.
机译:本文的目的是将一种新型锚固的实验测试结果与FEM分析的结果进行比较,该锚固是将用于大面板结构的外墙构件中的纹理层与结构层连接起来。两种类型的样品经过了实验测试:单层均匀混凝土和带埋入式点锚的三层混凝土,以及带有胶粘锚的类似样品。测试元件使用C 12/15和C 30/37混凝土,直径12 mm的锚,由钢制成,对应于5.8级不锈钢螺钉等级,Sika Anchorfix-1树脂和XPS聚苯乙烯。对于三层样品,在测试时施加了两个力:由于纹理层的分离而产生的撕裂和剪切力。 ANSYS程序用于分析样品的数值建模。建立了使用实体元素的3D模型。对于钢锚,材料特性被视为两线弹塑性增强材料。混凝土构件采用Drucker-Prager模型,树脂采用线弹性模型,聚苯乙烯根据线弹性断裂力学采用脆性模型。

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