Determination of mechanical parameters for elements in meso-mechanical models of concrete

被引：10

作者：

Gu X. ^{[1
]}

Jia J. ^{[1
]}

Wang Z. ^{[1
]}

Hong L. ^{[1
]}

Lin F. ^{[1
]}

机构：

[1] Department of Building Engineering, Tongji University

来源：

Frontiers of Structural and Civil Engineering | 2013年 / 7卷 / 4期

基金：

中国国家自然科学基金;

关键词：

Concrete; Discrete element method; Mechanical parameter; Meso-mechanical model; Size effect;

D O I：

10.1007/s11709-013-0225-7

中图分类号：

学科分类号：

摘要：

The responses of cement mortar specimens of different dimensions under compression and tension were calculated based on the discrete element method with the modified-rigid-body-spring concrete model, in which the mechanical parameters derived from macro-scale material tests were applied directly to the mortar elements. By comparing the calculated results with those predicted by the Carpinteri andWeibull size effects laws, a series of formulas to convert the macro-scale mechanical parameters of mortar and interface to those at the meso-scale were proposed through a fitting analysis. Based on the proposed formulas, numerical simulation of axial compressive and tensile failure processes of concrete and cement mortar materials, respectively were conducted. The calculated results were a good match with the test results. © Higher Education Press and Springer-Verlag Berlin Heidelberg 2013.

引用

页码：391 / 401

页数：10

共 25 条

[21]

Bocca P., Carpinteri A., Size effect in the compressive behavior of concrete, (1989)

[22]

Weibull W., A statistical distribution function of wide applicability. Journal of Applied Mechanics, Transactions of the American Society of Civil Engineers, 18, 3, pp. 293-297, (1951)

[23]

Zech B., Wittmann F.H., A complex study on the reliability assessment of the containment of a PWR, Part II. Probabilistic approach to describe the behavior of materials, Transactions of the 4th International Conference on Structural Mechanics in Reactor Technology, pp. 1-14, (1977)

[24]

Bazant Z.P., Yu Q., Universal size effect law and effect of crack depth on quasi-brittle structure strength, Journal of Engineering Mechanics, 135, 2, pp. 78-84, (2009)

[25]

Standard for Test Method of Performance on Building Mortar JGJ/T70-2009

← 1 2 3 →