Damage Model Based Reinforced-Concrete Element
V4 J/ h9 R, D" C% Q" BChee Kiong Soh1; Yu Liu2; Yue Xing Dong3; and Xin Zheng Lu4
2 S1 ^" N. o# P1 @4 z9 M, \" lAbstract: 7 n P7 D% U3 w
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
8 n+ @7 r+ P, N3 m5 t; X9 x6 @$ Xelement. 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.
6 V9 _( E5 e' K7 \7 d4 J" ~DOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!7 c" o; f/ g! t* w
CE Database subject headings: Damage; Models; Concrete, reinforced.- v% {$ V3 ~8 G7 L
; X$ B% \: M& t; Q7 E5 G5 R/ o0 c损伤模型为基础的钢筋混凝土构件: G/ {# a7 Z [+ N3 j
摘要：
4 w& |) l& \# q9 a4 C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。
8 N$ @3 Z! Q& K3 g. \ }7 X4 t/ @DOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!- S: Q5 e" O5 |- q
CE数据库主题词：破坏;模型;混凝土，加固。' x8 l; M6 b$ m) t& ^. k: I
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