Determination of boundary effect on shear fracture energy at steel bar-concrete interface

被引：19
作者：
Yang, Shutong [1 ,2 ]
Chen, Yujia [1 ]
Du, Derun [1 ]
Fan, Guoxi [1 ]
机构：
[1] Ocean Univ China, Coll Engn, Dept Civil Engn, Qingdao 266100, Peoples R China
[2] Collaborat Innovat Ctr Engn Construct & Safety Bl, Qingdao 266033, Peoples R China
来源：
ENGINEERING FRACTURE MECHANICS | 2016年 / 153卷
基金：
中国国家自然科学基金;
关键词：
Concrete; Steel bar; Shear fracture energy; Maximum pull-out load; Boundary effect; BOND-SLIP; ANCHORAGE SYSTEM; FIBER PULLOUT; PROCESS ZONE; SURFACE; STRESS; JOINTS; COMPOSITES; TOUGHNESS; BEHAVIOR;
D O I：
10.1016/j.engfracmech.2015.12.031
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
An analytical approach was proposed to predict the maximum pull-out load of steel bar from concrete, which is then related to the local fracture energy at the shear crack-tip region. Based on the comparisons between the analytically predicted and experimentally determined maximum pull-out loads under two extreme conditions, i.e., maximum crack-tip bridging with maximum fracture energy and zero crack-tip bridging with minimum fracture energy, the crack-tip local fracture energy indeed varies with the initial shear crack length. A tri-linear model was presented to well describe the local shear fracture energy distribution along the embedment length indicating the boundary effect. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：319 / 330
页数：12
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