Experimental study on dynamic damage evolution of concrete under multi-axial stresses

被引：31

作者：

Chen, J. Y. ^{[1
]}

Zhang, Z. X. ^{[1
]}

Dong, H. W. ^{[1
]}

Zhu, J. ^{[1
]}

机构：

[1] Ningbo Univ, Ningbo 315211, Zhejiang, Peoples R China

来源：

ENGINEERING FAILURE ANALYSIS | 2011年 / 18卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Concrete; SHPB; Dynamic damage evolution; Mutil-axial stress; MORTAR;

D O I：

10.1016/j.engfailanal.2011.04.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effect of stress state on the dynamic compressive strength and the dynamic evolution process of concretes are investigated by use of a Spilt Hopkinson Pressure (SHPB) and the ultrasonic technique. The columned concrete specimen is encircled steel sleeve. The multi-axial loading includes the axial and the radial loadings. The, loading is supplied by the incidence bar, and the radial ones are produced by the : sleeve. Analysis of the dynamic damage evolution of the samples is based on the meas ment of the changes of ultrasonic wave velocities before and after the impact tests. waveforms in the test bars, the stress strain curves, the confining pressure of the specific the dynamic compressive strength and other information about the samples are obtained during the SHPB experiments. The results of the tests show that the loading rate and si states of the specimen apparently influence the damage evolution process in concretes. dynamic damage evolutions are accelerated with the increase of the strain rate and delayed significantly under the confined pressure. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1784 / 1790

页数：7

共 12 条

[1]

Abrams D.A., 1917, ASTM, V17, P364

[2] Damage evaluation of concrete plates by high-velocity impact [J].

Beppu, M. ;

Miwa, K. ;

Itoh, M. ;

Katayama, M. ;

Ohno, T. .

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2008, 35 (12) :1419-1426

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

BISCHOFF, PH ;

PERRY, SH .

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

[4] Long-term evolution of delayed ettringite and gypsum in Portland cement mortars under sulfate erosion [J].

Chen, Jian-kang ;

Jiang, Min-qiang .

CONSTRUCTION AND BUILDING MATERIALS, 2009, 23 (02) :812-816

[5] Effect of elevated temperatures on the residual mechanical properties of high-performance mortar [J].

Cülfik, MS ;

Özturan, T .

CEMENT AND CONCRETE RESEARCH, 2002, 32 (05) :809-816

[6]

Dong X.-L., 2004, J BEIJING I TECHNOL, V13

[7]

Dong Y L., 1997, Journal of Hydraulic Engineering, V7, P72

[8]

[胡时胜 Hu Shisheng], 2002, [爆炸与冲击, Explosion and Shock Waves], V22, P242

[9] Mechanical and fracture properties of cement-based bi-materials after thermal cycling [J].

Kanellopoulos, Antonios ;

Farhat, Farhat A. ;

Nicolaides, Demetrios ;

Karihaloo, Bhushan L. .

CEMENT AND CONCRETE RESEARCH, 2009, 39 (11) :1087-1094

[10] Analytical solution of the spherical cavity expansion process [J].

Rosenberg, Z. ;

Dekel, E. .

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING, 2009, 36 (02) :193-198

← 1 2 →