Shear capacity of composite prestressed concrete beams

被引：0

作者：

Cederwall, Krister ^{[1
]}

机构：

[1] Univ of Technology, Sweden

来源：

Nordic concrete research | 1988年 / 07期

关键词：

Building Codes - Concrete Construction--Prestressing - Concrete Testing - Stresses--Shear;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The results of experimental investigations of the shear capacity of composite prestressed concrete I-beams are summarized. The test specimens consist of the precast and prestressed lower part of the beams and upper part reinforced and cast in situ, with the joint between the parts in the web. A series of 16 full-scale beams was tested, including 4 non-prestressed reference beams (2 homogeneous and 2 composite) and 12 prestressed beams (3 homogeneous and 9 composite). The amount of prestress was varied. On the basis of the test results the relevance to composite beams of the equation in the Swedish Code BBK-79 for shear capacity of homogeneous prestressed concrete beams is discussed. The test series indicate a slight overestimation of the beneficial influence of prestressing, greater for homogeneous beams than for composite beams.

引用

页码：28 / 40