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A new procedure for the analysis of construction loads in multistory reinforced concrete structures
Author(s) -
de Almeida Prado José Fernão Miranda,
Corrêa Márcio Roberto Silva,
Ramalho Marcio Antonio
Publication year - 2003
Publication title -
the structural design of tall and special buildings
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.895
H-Index - 43
eISSN - 1541-7808
pISSN - 1541-7794
DOI - 10.1002/tal.223
Subject(s) - formwork , reinforced concrete , structural engineering , cracking , building construction , engineering , structural load , structural system , schedule , load distribution , civil engineering , computer science , chemistry , operating system
Summary Construction loads in a multistory reinforced concrete building are largely influenced by the construction schedule. These loads may exceed the designed strength of the building's structure or produce early cracking of the floor, with adverse consequences to its service conditions, because of amplifications of time‐dependent deflections. Fresh floors are supported by previously cast floors, using a formwork system with shores and reshores. The definition of floor loads, considering the construction sequence, provides an outlook of the load history on the structural elements from the beginning to the end of the construction work. Models for evaluating that phenomenon are very important and, as far as possible, should be simple and suitable for quick analysis. The present work proposes a new method to analyze the distribution of construction loads. This method is based on the experience of the authors in using finite elements in sequential structural analyses of multistory reinforced concrete buildings. Using the concept of primary structures, the new method offers a viable way of distributing construction loads between the formwork and the interconnected floors. Copyright © 2003 John Wiley & Sons, Ltd.