Failure lifetime of concrete structures under creep and fracture

被引：13

作者：

Barpi, F. ^{[1
]}

Valente, S. ^{[1
]}

机构：

[1] Politecn Torino, Dept Struct & Geotech Engn, Turin, Italy

来源：

MAGAZINE OF CONCRETE RESEARCH | 2011年 / 63卷 / 05期

关键词：

ORDER RATE APPROACH; BEHAVIOR; TENSILE;

D O I：

10.1680/macr.9.00159

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The paper summarises research about the behaviour of concrete in the case of quasi-static fracture and presents some new results about size effects on failure lifetime. The interaction between strain-softening and time-dependent behaviour is examined by means of a viscous rheological element (based on a fractional order rate law) coupled with a micromechanical model for the fracture process zone. Creep fracture in mode I conditions is analysed through the finite-element method and the cohesive crack model. Creep tests executed on three-point bending conditions (at different load levels) are investigated to assess the influence of specimen size on failure lifetime.

引用

页码：371 / 376

页数：6

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