Deformation Analysis Due to Early Loading of Concrete Buildings

作     者：Romildo Alves Berenguer Fernando Artur Nogueira Silva Joao Luiz de Melo Ramos Fabio Cameiro Lourenco Pryscylla Femanda Silva Chaves Ana Cecilia Ferreira Leite 

作者机构：Department of Civil Engineering Catholic University of Pernambuco Recife 51110-200 Brazil 

出 版 物：《Journal of Civil Engineering and Architecture》 (土木工程与建筑（英文版）)

年 卷 期：2016年第10卷第6期

页      面：690-695页

学科分类：081504[工学-水利水电工程] 08[工学] 081402[工学-结构工程] 081304[工学-建筑技术科学] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

主　　题：Reinforced concrete buildings constructive effects staged construction creep shrinkage. 

摘      要：The building industry has experienced in recent years a strong growth in demand in general and in the case of reinforced concrete buildings this increase has been more marked. This fact has also contributed to accelerate all stages of the production process of these constructions with more pronounced effects on the methodologies used in the constructive steps that influence directly the structural design of the building. Structures loaded at ever earlier ages, in which the strength and deformation properties of materials are not yet sufficiently mature. It is a variable that needs to be taken into account already in the design phase so that the concrete structure behaves within acceptable level of reliability taking into account design code recommendations for service life. To understand the importance of constructive effects and to assess its magnitude in the execution of reinforced concrete buildings, this paper presents result from nonlinear analyses using finite element method adopting an approach commonly referred as staged construction applied to a typical building found in the practice. The effects of creep and shrinkage were considered and the results obtained demonstrate that the strains due to constructive effects can, in certain cases, assume representative values which, if ignored, can lead to important pathologies in the building.