Numerical Modeling of Creep in Composite Masonry Walls
Publication: Journal of Structural Engineering
Volume 117, Issue 7
Abstract
A computational procedure based on the principle of superposition to estimate creep strains in composite masonry walls is developed and presented in this paper. This development is based on the assumption that creep‐versus‐time relationship in masonry can be uniquely defined by a specific creep‐ (i.e., creep per unit stress) versus‐time curve. Experimentally obtained, specific creep‐versus‐time curves for various components of composite masonry walls subjected to uniaxial compressive loads are utilized to establish relationships between the components of creep strain increments and existing stresses. These relationships are used in conjunction with the principle of superposition to compute creep strains in composite masonry walls. In addition, the effect of creep strains on stress changes is also investigated. It is shown that all strains do increase substantially due to creep during the first 300 days, most of these during the first month after load application. On the other hand, the shear stresses in the collar joint remain almost constant with the lapse of time.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Anand, S. C., and Ghandhi, A. (1983). “A finite element model to compute stresses in composite masonry walls due to temperature, moisture and creep.” Proc., 3rd Canadian Masonry Symp. '83, Univ. of Alberta, Edmonton, Alberta, Canada.
2.
Anand, S. C., Gandhi, A., and Brown, R. H. (1983). “Development of a finite element model to compute stresses in composite masonry due to creep, moisture, and temperature.” Report No. 5S‐83, Dept. of Civ. Engrg., Clemson, Univ., Clemson, S.C.
3.
Anand, S.C., Dandawate, B., and Brown, R. H. (1984). “A finite element model for creep in composite masonry.” Report No. 20S‐84, Dept. of Civ. Engrg., Clemson Univ., Clemson, S.C.
4.
Anderson, C. A. (1986). “Finite element analysis of creep and shrinkage.” Creep and Shrinkage of Concrete: Mathematical Modelling Proc., 4th RILEM Int. Symp., Z. P. Bazant, ed., Northwestern Univ., Evanston, Ill.
5.
Bažant, Z. P. (1982). “Mathematical models for creep and shrinkage of concrete.” Creep and Shrinkage of Concrete Structures, Z. P. Bažant, and F. H. Wittman, eds., John Wiley and Sons, New York, N.Y., 312–315.
6.
Bažant, Z. P. (1986). “Materials models for structural creep analysis.” Creep and Shrinkage of Concrete: Mathematical Modelling, Proc., 4th RILEM Int. Symp., Z. P. Bažant, ed., Northwestern Univ., Evanston, Ill.
7.
Bushnell, D. (1977). “A strategy for the solution of problems involving large deflections, plasticity and creep.” Int. J. Numer. Methods Engrg., 11, 683–708.
8.
Dilger, W. H. (1982). “Methods of structural creep analysis.” Creep and shrinkage of concrete structures, Z. P. Bažant, and F. H. Wittman, eds., John Wiley and Sons, New York, N.Y., 184–192.
9.
Dyson, B. F. (1981). “A unifying view of the kinematics of creep cavity growth.” Creep and fracture of engineering materials and structures, B. Wilshire, and D. R. J. Owen, eds., Pineridge Press, Swansea, U.K., 235–247.
10.
Greenbaum, G. A., and Rubinstein, M. F. (1968). “Creep analysis of axisymmetric bodies using finite elements.” Nuclear Engrg. and Design, 7, 379–397.
11.
Haque, M. N., Valliapan, S., and Cook, D. J. (1974). “Tensile creep analysis of concrete structures.” Proc. Int. Conf. on Finite Element Methods in Engrg., V. A. Pulmano, and A. P. Kabaila, eds., 349–368.
12.
Hill, R. (1950). The mathematical theory of plasticity. Clarendon Press, New York, N.Y.
13.
Lenczner, D. (1988). “Creep in brickwork walls at high and low stress/strength ratios.” Proc., 8th Int. Brick/Block Masonry Conference, Dublin, Ireland, 324–333.
14.
Neville, A. M., and Meyers, B. L. (1964). “Creep of concrete: Influencing factors and predictions.” Proc., Symp. on Creep of Concrete, American Concrete Institute, Houston, Tex., 15–28.
15.
Recommended practice for engineered brick masonry. (1975). Brick Inst. of America, McLean, Va.
16.
Shrive, N. G., and England, G. L. (1981). “Creep and shrinkage behavior of masonry.” Int. J. of Masonry Constr., 1(3), 103–109.
17.
Warren, D., and Lenczner, D. (1981). “A creep‐time function for single leaf brickwork walls.” Int. J. of Masonry Constr., 2(1), 13–19.
18.
Warren, D., and Lenczner, D. (1982). “Measurement of the creep strain distribution in an axially loaded brickwork wall.” Proc., Second North Amerian Masonry Conference, Univ. of Maryland, College Park, MD, 5.1–5.19.
19.
Zienkiewicz, O. C. (1977). The finite element method in engineering science. 3rd Ed., McGraw‐Hill, London, U.K.
Information & Authors
Information
Published In
Copyright
Copyright © 1991 ASCE.
History
Published online: Jul 1, 1991
Published in print: Jul 1991
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.