Damage Model Based Reinforced-Concrete Element
z: T$ V8 K0 F k5 m9 _Chee Kiong Soh1; Yu Liu2; Yue Xing Dong3; and Xin Zheng Lu41 j7 A, P# O" f+ }6 e
Abstract: ) p' ~6 W3 G$ @
In this paper, the damage in concrete around a reinforcement bar is examined, and three types of damage in concrete and at the concrete-rebar interface are defined. Based on these definitions, a three-dimensional damaged reinforced-concrete ~DRC! element is proposed. The element consists of a 10-node concrete element, a two-node rebar element, and a four-node concrete-rebar interface
7 E L+ i$ c* p( l4 `$ |8 Aelement. Experiments were carried out to obtain the parameters for the bond damage evolution equation. The proposed DRC element is implemented as a user-defined element of MSC MARC2000, a commercial finite-element analysis software package. Two numerical examples were examined, and the results show that the DRC element can simulate the bond deterioration in reinforced-concrete structural members with sufficient rationality, accuracy, and efficiency.4 J4 S% |8 y, o* i1 G& s7 m
DOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!
9 k6 h9 ]: r/ X5 G8 uCE Database subject headings: Damage; Models; Concrete, reinforced.! ]3 t2 m9 [ I3 }" @0 `# |
6 C$ s) X) B9 q+ ~) c0 K损伤模型为基础的钢筋混凝土构件
* j4 D: Q2 J" y5 e摘要：& A$ f5 Y; }" Y( w) d
在本论文中，讨论了加强钢筋周围的混凝土的破坏情况，将混凝土钢筋破坏界面的界定为3种类型。根据这些定义，提出了高强混凝土的三维破坏原理。这个原理包含三个元素，分别是一个10节点的混凝土构件，两节点筋单元，和一个四节点的混凝土钢筋接口。进行了试验，以取得弯矩破坏公式的有关参数。数据控制记录被建议作为MSC MARC2000的一个用户定义元素，MSC MARC2000是一个商用有限元分析软件包。两个数值实例研究结果表明，数据控制记录元素可以合理精确有效的模拟高强混凝土黏结失效。1 o _& f1 }: f' ]- C
DOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!
# W9 N9 y# m- O& h6 o( W1 SCE数据库主题词：破坏;模型;混凝土，加固。5 }& X( U/ r; M# h* r$ j
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