Stress transfer characteristics of sheathed strand in prestressed concrete beams: Experimental study

被引：0

作者：

Burgueo, Rigoberto ^{[1
]}

Sun, Yi ^{[2
]}

Donoso, Melissa ^{[3
]}

机构：

[1] Michigan State Univ, Dept Civil & Environm Engn, Struct Engn, E Lansing, MI 48824 USA

[2] Thornton Tomasetti, New York, NY USA

[3] Michigan Dept Transportat, Lansing, MI USA

来源：

PCI JOURNAL | 2015年

关键词：

Debonding; detensioning; sheathing; strand; stress transfer; transfer length; DEVELOPMENT LENGTH;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Stress transfer of sheathed strand was examined using 24 small-scale prestressed concrete beams with bonded or sheathed strand. Variables included release method, sheathing material, and debonded length. Both debonding material and strand release method affect stress transfer. Sudden release increases transfer length due to the greater kinetic energy imparted to the beam. Transfer lengths in beams with rigid oversized sheathing were generally longer than in beams with flexible sheathing, an effect that is attributed to the existence of a nominal bond resistance mechanism due to dilation of the strand along the debonded length.

引用

页码：104 / 120

页数：17