Concrete cracking in tension members and application to deck slabs of bridges

被引：31
|
作者：
Muttoni, A. [1 ]
Ruiz, M. Fernandez [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, IS BETON, CH-1015 Lausanne, Switzerland
来源：
JOURNAL OF BRIDGE ENGINEERING | 2007年 / 12卷 / 05期
关键词：
bridge decks; tensile members; cracking; bond stress; time dependence; slabs;
D O I：
10.1061/(ASCE)1084-0702(2007)12:5(646)
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Currently, estimations of the crack width in the deck slab of bridges given by codes of practice are based on either theoretical or empirical approaches considering mainly the monotonic loading behavior. However, cracking in reinforced tensile members is highly influenced by the loading history (including both the loading and unloading processes) because of the irreversible nonlinear behavior of bond and of tensile response of concrete, resulting into residual cracks of non-negligible width. This paper investigates the influence of this phenomenon and presents a physical model describing it. An analytical model is developed and its results are compared to various tests with good agreement. Finally, a simple design formula is derived and recommendations for its application to practical cases are proposed.
引用
收藏
页码：646 / 653
页数：8
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