Time-Dependent Stiffness of Cracked Reinforced and Composite Concrete Slabs

被引：20
|
作者：
Gilbert, R. Ian [1 ]
机构：
[1] Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW, Australia
来源：
MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES | 2013年 / 57卷
关键词：
cracking; creep; curvature; deflection; reinforced concrete; serviceability; shrinkage; slabs; tension stiffening; SHRINKAGE;
D O I：
10.1016/j.proeng.2013.04.006
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The effects of creep and shrinkage on the time-dependent behaviour of reinforced concrete and composite steel-concrete slabs are discussed and procedures for the prediction of the long-term deflection are presented. The time-dependent deformations caused by creep and shrinkage are modelled using tractable formulations developed using the age-adjusted effective modulus method of analysis. The procedure includes the time varying nature of tension stiffening and the effects of time-dependent shrinkage-induce cracking. Sample calculations are provided. The methods are validated against a range of test data and are shown to provide reliable estimates of in-service deformations. (C) 2013 The Authors. Published by Elsevier Ltd.
引用
收藏
页码：19 / 34
页数：16
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