A simplified extreme method for determining double-K fracture parameters of concrete using experimental peak load

被引：33

作者：

Qing, L. B. ^{[1
]}

Nie, Y. T. ^{[1
]}

Wang, J. ^{[2
]}

Hu, Y. ^{[3
]}

机构：

[1] Hebei Univ Technol, Coll Civil Engn, Tianjin 300401, Peoples R China

[2] Zhengzhou Univ, Coll Water Conservancy & Environm Engn, Zhengzhou 450001, Peoples R China

[3] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2017年 / 40卷 / 02期

基金：

中国国家自然科学基金;

关键词：

concrete; three-point bending beam; fracture; double-K fracture parameters; extreme method; QUASI-BRITTLE FRACTURE; CRACK-PROPAGATION; TENSION SPECIMENS; CRITERION; BEAMS; MODEL; TESTS;

D O I：

10.1111/ffe.12493

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A simplified approach to obtain the double-K fracture parameters of concrete for three-point bending beams was proposed based on the extreme method. With the proposed method, the double-K parameters can be easily obtained by the experimental peak load. This method requires fewer parameters or tests than the double-K method and the peak load method. It also avoids complicated numerical integral compared with the traditional extreme method. The double-K parameters obtained by the proposed method are slightly smaller than those by the double-K method, and they do not seem to be influenced by the initial crack length to depth ratio.

引用

页码：254 / 266

页数：13

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