剪-壓復合作用下砌體抗剪能力的數值模擬驗證
發(fā)布時間:2018-08-10 07:26
【摘要】:通過研究現階段砌體在剪-壓復合作用下的多種破壞準則,以現行《砌體結構設計規(guī)范》GB50003—2001中的變系數剪摩理論為依據,對磚砌體分別采取分離式和整體式建模。在有限元軟件ABAQUS中,利用接觸黏性技術,建立考慮砂漿性能和砂漿與磚塊之間的相互作用的三維有限元分離式模型;砌體近似看成是各向同性材料,用混凝土塑性損傷模型定義材料屬性,建立了三維有限元整體式模型。在不同軸壓比下對磚砌體的破壞形態(tài)進行了數值模擬,對其抗剪承載力進行了模擬計算。結果表明,有限元模型計算值與規(guī)范理論值吻合度較高,驗證了該有限元模型與規(guī)范理論的一致性。
[Abstract]:Based on the theory of variable coefficient shear friction in the current Code for masonry structure Design (GB50003-2001), this paper studies various failure criteria of masonry under the action of shear-compression, and adopts separate and integral modeling methods for brick masonry, respectively. In the finite element software ABAQUS, a three dimensional finite element separation model considering mortar properties and the interaction between mortar and brick is established by using contact viscosity technology, and masonry is considered as isotropic material approximately. The material properties are defined by the plastic damage model of concrete, and a three-dimensional finite element integral model is established. The failure modes of brick masonry are numerically simulated under different axial compression ratios, and its shear capacity is simulated and calculated. The results show that the calculated value of the finite element model is in good agreement with the theoretical value of the gauge, which verifies the consistency between the finite element model and the gauge theory.
【作者單位】: 太原理工大學建筑與土木工程學院;
【分類號】:TU364
本文編號:2175379
[Abstract]:Based on the theory of variable coefficient shear friction in the current Code for masonry structure Design (GB50003-2001), this paper studies various failure criteria of masonry under the action of shear-compression, and adopts separate and integral modeling methods for brick masonry, respectively. In the finite element software ABAQUS, a three dimensional finite element separation model considering mortar properties and the interaction between mortar and brick is established by using contact viscosity technology, and masonry is considered as isotropic material approximately. The material properties are defined by the plastic damage model of concrete, and a three-dimensional finite element integral model is established. The failure modes of brick masonry are numerically simulated under different axial compression ratios, and its shear capacity is simulated and calculated. The results show that the calculated value of the finite element model is in good agreement with the theoretical value of the gauge, which verifies the consistency between the finite element model and the gauge theory.
【作者單位】: 太原理工大學建筑與土木工程學院;
【分類號】:TU364
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