An extended finite element model for modelling localised fracture of reinforced concrete beams in fire
An extended finite element model for modelling localised fracture of reinforced concrete beams in fire
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DOI：
10.1016/j.compstruc.2015.02.006
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发表时间：
2015-05-01
影响因子：
4.7
通讯作者：
Huang, Zhaohui
中科院分区：
文献类型：
--
作者：
Liao, Feiyu;Huang, Zhaohui
发展了钢筋混凝土梁在高温下局部断裂的稳健有限元模拟方法。在该模型中，钢筋混凝土梁被表示为由4节点四边形素混凝土、3节点主筋和2节点粘结连接单元组成的组合体。混凝土单元被细分为多个层，以考虑梁横截面上的温度分布。为了捕捉混凝土内部的局部裂缝，在混凝土单元中引入了一种扩展有限元方法。通过对混凝土梁的火灾试验，验证了该模型的有效性。(C)2015年提交人。爱思唯尔有限公司出版。
A robust finite element procedure for modelling the localised fracture of reinforced concrete beams at elevated temperatures is developed. In this model a reinforced concrete beam is represented as an assembly of 4-node quadrilateral plain concrete, 3-node main reinforcing steel bar, and 2-node bond-link elements. The concrete element is subdivided into layers for considering the temperature distribution over the cross-section of a beam. An extended finite element method (XFEM) has been incorporated into the concrete elements in order to capture the localised cracks within the concrete. The model has been validated against previous fire test results on the concrete beams. (C) 2015 The Authors. Published by Elsevier Ltd.