Damage Model Based Reinforced-Concrete Element4 V* D9 x6 V: t9 o5 N# _: j
Chee Kiong Soh1; Yu Liu2; Yue Xing Dong3; and Xin Zheng Lu4# K1 O+ W$ ]1 M, ]( D
Abstract: + P3 E7 j+ u% L+ a. B3 V3 t( K2 H
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! A0 I q2 i( N% \7 x" Y) q
element. 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.) J0 O& t! q9 b( `
DOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!
$ b( Y1 O r/ B; z" `CE Database subject headings: Damage; Models; Concrete, reinforced.& v- I. f( C0 Q" ~
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损伤模型为基础的钢筋混凝土构件
2 p' \, `' d5 k8 R$ ?, W; b0 [2 D摘要：
" ~, R/ s* S% v8 z& j3 {2 I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。
" i) I% p7 v8 T ^, v# mDOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!/ B0 [6 N4 c1 R, N
CE数据库主题词：破坏;模型;混凝土，加固。
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