Abstract
The paper presents results obtained in tests consisting of cycling loading of a two-span continuous beam as wall as of some portal frames made of mild steel. The investigations were performed for various load intensities so as to determine the maximum intensity at which the defections stabilization still takes place, i.e. a given structure shakes. down. The results a.re in a fair agreement with the predictions of the shakedown theory and thus confirm its practical applicability in the design of steel structures.References
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A. SAWCZUK, Shakedown analysis of elastic-plastic structures, Nucl. Bng. Design, 28, 136, 1974.
J. A. KONIG, A. SAWCZUK, W. PAPROCKA-GARLICKA, Shakedown analysis of frames [in Polish], Zesz. Probl. Mostostal, 5, Warszawa 1974.
E. P. POPOV, R. E. Mc CARTHY, Deffection stability of frames under repeated loading, J. Eng. Mech. Div., 86, 61-78, 1960.
V. V. BERTERO, E. P. POPOV, Effect of large alternating strains of steel beams, J, Struct. Div., 91, 1-12, 1965.
Y. FUKUMOTO, H. YOSHIDA, Deflection stability of beams under repeated loads, J. Struct. Div., 95, 1443-1458, 1969.
P. G. EYRE, T. V. GALAMBOS, Shakedown tests on steel bars and beams, J. Struct. Div., 96, 1284-1304, 1970.
P. GRUNDY, Shakedown under moving loads, Civil Eng, Trans., 13, 31-34, 1971.
J. HEYMAN, R. P. JOHNSON, P. P. FOWLER, I. P. GILLSON, Shakedown analysis, the design of a 275 kV switch-house, The Struct. Eng., 46, 97-106, 1968.
J. KLEPACZKO, J. LITOŃSKI, The static hysteresis loop of some metals produced by plastic strain, [in Polish], Rozpr. Inż., 12, 533-542, 1964.
S. DOROSZ, An improved bound to maximum deflection of elastic-plastic structures at shakedown, J. Struct. Mech., 6, 267-287, 1978.
A. BIEGUS, Z. KOWAL, Badania doświadczalne przystosowania belek dwuprzęsłowych do zmiennych obciążeń, Raport Inst. Budow. Polit. Wrocławskiej, 19/78, Wrocław 1978.
J. A. KONIG, M. KLEIBER, On a new method o shakedown analysis, Bull. Acad. Polon, Sci., serie Sci. Techn., 26, 165-176, 1978.
F. A. LECKIE, R. K. PENNY, Shakedown as a guide to the design of pressure vessels, J. Eng. Industry, 91, 799-807, 1969.
D. A. GOKCHFELD, Load-carrying capacity of structures subject to uneven heating [in Russian], Mashinostroyenye, Moscow 1970.
A. SAWCZUK, Shakedown analysis of elastic-plastic structures, Nucl. Bng. Design, 28, 136, 1974.
J. A. KONIG, A. SAWCZUK, W. PAPROCKA-GARLICKA, Shakedown analysis of frames [in Polish], Zesz. Probl. Mostostal, 5, Warszawa 1974.
E. P. POPOV, R. E. Mc CARTHY, Deffection stability of frames under repeated loading, J. Eng. Mech. Div., 86, 61-78, 1960.
V. V. BERTERO, E. P. POPOV, Effect of large alternating strains of steel beams, J, Struct. Div., 91, 1-12, 1965.
Y. FUKUMOTO, H. YOSHIDA, Deflection stability of beams under repeated loads, J. Struct. Div., 95, 1443-1458, 1969.
P. G. EYRE, T. V. GALAMBOS, Shakedown tests on steel bars and beams, J. Struct. Div., 96, 1284-1304, 1970.
P. GRUNDY, Shakedown under moving loads, Civil Eng, Trans., 13, 31-34, 1971.
J. HEYMAN, R. P. JOHNSON, P. P. FOWLER, I. P. GILLSON, Shakedown analysis, the design of a 275 kV switch-house, The Struct. Eng., 46, 97-106, 1968.
J. KLEPACZKO, J. LITOŃSKI, The static hysteresis loop of some metals produced by plastic strain, [in Polish], Rozpr. Inż., 12, 533-542, 1964.
S. DOROSZ, An improved bound to maximum deflection of elastic-plastic structures at shakedown, J. Struct. Mech., 6, 267-287, 1978.
A. BIEGUS, Z. KOWAL, Badania doświadczalne przystosowania belek dwuprzęsłowych do zmiennych obciążeń, Raport Inst. Budow. Polit. Wrocławskiej, 19/78, Wrocław 1978.
J. A. KONIG, M. KLEIBER, On a new method o shakedown analysis, Bull. Acad. Polon, Sci., serie Sci. Techn., 26, 165-176, 1978.
