Reliability of Energy Method to Predict Lift Slab Structures Stability
Publication: Journal of Performance of Constructed Facilities
Volume 12, Issue 3
Abstract
A formula that can be used to check the stability of lift slab structures during the construction stages is studied. Its reliability is assessed against the available methods to check the stability of structures. Those methods usually include the second-order effect of the nonlinear analysis of structures. The energy method formula, derived by using the energy method, does not take into consideration the P-Delta effect, which causes the nonlinear terms. The computer program, which is used to check the results of the energy formula, applies nonlinear analysis to find the loads that could cause the statically unstable condition of more than 90 different construction stages of lift slab structures. The formula is found to be quite reliable and conservative in its predictions, whenever the lift slab construction stage is in an unstable condition, or close to it.
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Published In
Journal of Performance of Constructed Facilities
Volume 12 • Issue 3 • August 1998
Pages: 153 - 160
Copyright
Copyright © 1998 American Society of Civil Engineers.
History
Published online: Aug 1, 1998
Published in print: Aug 1998
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