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

[1]

Ueda T., Prediction of structural performance during service life from microstructure, Workshop Proceedings-Microstructure and Durability to Predict Service Life of Concrete Structures, pp. 39-48, (2004)

[2]

Meguro K., Tagel-Din H., Applied element simulation of RC structures under cyclic loading, Journal of Structural Engineering, 127, 11, pp. 1295-1305, (2001)

[3]

Bazant Z.P., Chapter 3: Microplane model for strain controlled inelastic behavior, Proceedings of Mechanics of Engineering Materials, pp. 45-59, (1984)

[4]

Cusatis G., Bazant Z.P., Cedolin L., Confinement-shear lattice model for concrete damage in tension and compression: I. Theory, Journal of Engineering Mechanics, 129, 12, pp. 1439-1448, (2003)

[5]

Bazant Z.P., Tabbara M.R., Kazemi M.T., Pijaudier-Cabot G., Random particle models for fracture of aggregate or fiber composites, Journal of Engineering Mechanics, 116, 8, pp. 1686-1709, (1990)

[6]

Gu X.L., Hong L., Wang Z.L., Lin F., A modified-rigid-body-spring concrete model for prediction of initial defects and aggregates distribution effect on behavior of concrete, Computational Materials Science, 77, pp. 355-365, (2013)

[7]

Xing J.B., Introduction of Beam-Particle Model, (1999)

[8]

Hakuno M., Meguro K., Simulation of concrete-frame collapse due to dynamic loading, Journal of Engineering Mechanics, 119, 9, pp. 1709-1722, (1993)

[9]

Nagai K., Sato Y., Ueda T., Mesoscopic simulation of failure of mortar and concrete by 2D RBSM, Journal of Advanced Concrete Technology, 2, 3, pp. 359-374, (2004)

[10]

Nagai K., Sato Y., Ueda T., Three-dimensional simulation of mortar and concrete model failure in meso level by rigid body spring model, Journal of Structural and Engineering, JSCE, 50 A, pp. 167-178, (2004)

← 1 2 3 →