Cracking and Crushing in Prestressed Concrete Beams

被引：13

作者：

Accornero, Federico ^{[1
]}

Cafarelli, Renato ^{[1
]}

Carpinteri, Alberto ^{[2
,3
]}

机构：

[1] Politecn Torino, Turin, Italy

[2] Politecn Torino, Chair Struct Mech, Turin, Italy

[3] European Acad Sci, Engn Div, Vienna, Austria

来源：

ACI STRUCTURAL JOURNAL | 2021年 / 118卷 / 02期

关键词：

concrete cracking; concrete crushing; ductile-to-brittle transition; non-linear fracture mechanics; prestressed concrete; scale effects; REINFORCED-CONCRETE; ROTATIONAL CAPACITY; FRACTURE; MODEL; COMPRESSION; STRENGTH; BEHAVIOR;

D O I：

10.14359/51728184

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The cohesive/overlapping crack model represents an effective tool in the study of failure transition phenomena occurring in plain or reinforced concrete structures. In the present paper, this non-linear fracture mechanics model is applied to study the global structural behavior of prestressed concrete beams casted by means of pre-tensioning technique or, more generally, having a straight steel strand layout. In this context, a thorough analysis of scale effects is presented to investigate local mechanical instabilities such as snap-back and snap-through phenomena due to concrete cracking or crushing, highlighting the crucial role of the ductile-to-brittle transition in the design of prestressed concrete structural elements.

引用

页码：101 / 109

页数：9

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