Damage Model Based Reinforced-Concrete Element; h* Z' ?5 b! U$ E- Y
Chee Kiong Soh1; Yu Liu2; Yue Xing Dong3; and Xin Zheng Lu4, i8 `2 S& d! U3 x
Abstract:
; h$ B- T# j# l* s, gIn 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
4 A, u: w. v, Q; L0 E( F, ~2 Jelement. 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.
) K4 D8 M \9 n7 C( E% rDOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!
' A( ?% n# a) Q4 P; u8 `CE Database subject headings: Damage; Models; Concrete, reinforced./ m" s/ o1 G1 S# ^0 N5 S
& M; ^4 y# L" j u2 n- H6 W损伤模型为基础的钢筋混凝土构件
( x+ f- j% K( s, i' N. v1 i摘要：
' ?" ]) p2 e" w% P, Z0 g% G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。
- A- ?# |! w" G: c* A% qDOI: 10.1061/~ASCE!0899-1561~2003!15:4~371!
7 s" o- w$ j. H2 O9 J/ p2 T# oCE数据库主题词：破坏;模型;混凝土，加固。, e# u/ K- U K5 s) N$ U
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