剪-压复合作用下砌体抗剪能力的数值模拟验证
发布时间：2018-08-10 07:26
【摘要】：通过研究现阶段砌体在剪-压复合作用下的多种破坏准则,以现行《砌体结构设计规范》GB50003—2001中的变系数剪摩理论为依据,对砖砌体分别采取分离式和整体式建模。在有限元软件ABAQUS中,利用接触黏性技术,建立考虑砂浆性能和砂浆与砖块之间的相互作用的三维有限元分离式模型;砌体近似看成是各向同性材料,用混凝土塑性损伤模型定义材料属性,建立了三维有限元整体式模型。在不同轴压比下对砖砌体的破坏形态进行了数值模拟,对其抗剪承载力进行了模拟计算。结果表明,有限元模型计算值与规范理论值吻合度较高,验证了该有限元模型与规范理论的一致性。
[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.
【作者单位】： 太原理工大学建筑与土木工程学院;
【分类号】：TU364
本文编号：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.
【作者单位】： 太原理工大学建筑与土木工程学院;
【分类号】：TU364
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