A nonlinear dynamic uniaxial strength criterion that considers the ultimate dynamic strength of concrete

被引：152

作者：

Lu, Dechun ^{[1
]}

Wang, Guosheng ^{[1
]}

Du, Xiuli ^{[1
]}

Wang, Yang ^{[1
]}

机构：

[1] Beijing Univ Technol, Inst Geotech & Underground Engn, Beijing 100124, Peoples R China

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2017年 / 103卷

基金：

中国国家自然科学基金;

关键词：

Concrete; Strain rate effect; Actual dynamic strength; Physical mechanism; S criterion; HIGH-STRAIN-RATE; COMPRESSIVE STRENGTH; FAILURE CRITERION; MECHANICAL-BEHAVIOR; REINFORCED-CONCRETE; PLAIN CONCRETE; IMPACT TESTS; LOADING RATE; HIGH-RATES; FRACTURE;

D O I：

10.1016/j.ijimpeng.2017.01.011

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The existing test results and semi-empirical equations of the rate-dependent concrete strength have overestimated the actual dynamic strength because they do not distinguish between the actual dynamic strength related to the strain rate effects and the additional resistance caused by inertial effects. However, an ultimate strength of concrete exists at a strain rate exceeding a certain value. This paper proposes a nonlinear dynamic uniaxial strength criterion for concrete based on an analysis of the physical mechanisms governing the strain-rate-dependent behavior of concrete strength. The proposed criterion is able to describe the actual dynamic strength and to reflect the ultimate strength at a high strain rate of concrete. The results from two groups of dynamic uniaxial compressive tests and two groups of dynamic uniaxial tensile tests are used to verify the criterion. Moreover, the recommended physical parameters in the criterion are obtained by analyzing the statistical test results of dynamic uniaxial compression and tension. The recommended parameters can be used in the criterion to study the dynamic strength of concrete when dynamic tests are not feasible, and to predict the dynamic strength at high strain rates when tests are performed at lower strain rates. (C) 2017 Elsevier Ltd. All rights reserved

引用

页码：124 / 137

页数：14

共 75 条

[1]

Al-Salloum Y., 2014, COMPUT CONCRETE, V14, P675

[2] Rate dependent behavior and modeling of concrete based on SHPB experiments [J].

Al-Salloum, Yousef ;

Almusallam, Tarek ;

Ibrahim, S. M. ;

Abbas, H. ;

Alsayed, Saleh .

CEMENT & CONCRETE COMPOSITES, 2015, 55 :34-44

[3]

Antoun TH, 1991, THESIS, P230

[4] FRACTURE OF ROCK - EFFECT OF LOADING RATE [J].

BAZANT, ZP ;

BAI, SP ;

GETTU, R .

ENGINEERING FRACTURE MECHANICS, 1993, 45 (03) :393-398

[5] COMPRESSIVE BEHAVIOR OF CONCRETE AT HIGH-STRAIN RATES [J].

BISCHOFF, PH ;

PERRY, SH .

MATERIALS AND STRUCTURES, 1991, 24 (144) :425-450

[6] Experimental characterization of concrete in dynamic tension [J].

Brara, A ;

Klepaczko, JR .

MECHANICS OF MATERIALS, 2006, 38 (03) :253-267

[7] TEMPERATURE AND STRAIN-RATE DEPENDENCE OF SHEAR STRENGTH OF MILD STEEL [J].

CAMPBELL, JD ;

FERGUSON, WG .

PHILOSOPHICAL MAGAZINE, 1970, 21 (169) :63-+

[8] THE DYNAMIC YIELDING OF MILD STEEL [J].

CAMPBELL, JD .

ACTA METALLURGICA, 1953, 1 (06) :706-710

[9] Effect of Radial Inertia Confinement on Dynamic Compressive Strength of Concrete in SHPB Tests [J].

Chen, Tao ;

Li, Qingbin ;

Guan, Junfeng .

CIVIL ENGINEERING, ARCHITECTURE AND SUSTAINABLE INFRASTRUCTURE II, PTS 1 AND 2, 2013, 438-439 :215-+

[10] Compressive Strength of Concrete Cores under High Strain Rates [J].

Chen, Xudong ;

Wu, Shengxing ;

Zhou, Jikai .

JOURNAL OF PERFORMANCE OF CONSTRUCTED FACILITIES, 2015, 29 (01)

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