Experimental Investigation on Fatigue Shear Strength for Partially Prestressed Concrete with Unbonded Tendons

Journal of Chongqing Jiaotong University(Natural Science) ›› 1996, Vol. 15 ›› Issue (4): 1-7.

Experimental Investigation on Fatigue Shear Strength for Partially Prestressed Concrete with Unbonded Tendons

Zhao Canhui, Jiang Bingzhang, Gong Shanglong

Department of Bridge & Structure Engineering

Received:1995-10-30 Revised:1996-04-01 Online:1996-08-24 Published:2016-11-10

无粘结部分预应力砼梁疲劳抗剪强度试验研究

赵灿晖, 江炳章, 龚尚龙

重庆交通学院桥梁及结构工程系, 630074

作者简介:赵灿晖,男,1971年生,硕士生.
基金资助:
国家自然科学基金

Abstract

Abstract: Based on the fatigue test results of 8 PPC beams with unbonded tendons, this paper analyses the effects on stirrups stress and fatigue failuret and the influence of the shear span-depth, ratio degree of prstess, fatigue limit shear, fatigue numble, ratio of stirrup on stirrups stress are studies.A formula for calculation of stirrups stress is suggested. The formula coincides well with the test results.

Key words: prestressed concrete with unbonded tendons, shear fatigue

摘要： 本文依据8片无粘结部分预应力砼梁的疲劳抗剪试验结果.分析了箍筋应力及试验梁的破坏现象,研究了剪跨比、预应力度,疲劳上限剪力,荷载作用次数,配筋率对箍筋应力的影响.并且提出了无粘结部分预应力砼梁箍筋应力的计算公式,计算值与试验结果吻合良好.

关键词: 无粘结预应力, 疲劳抗剪

Zhao Canhui, Jiang Bingzhang, Gong Shanglong. Experimental Investigation on Fatigue Shear Strength for Partially Prestressed Concrete with Unbonded Tendons[J]. Journal of Chongqing Jiaotong University(Natural Science), 1996, 15(4): 1-7.

赵灿晖, 江炳章, 龚尚龙. 无粘结部分预应力砼梁疲劳抗剪强度试验研究[J]. 重庆交通大学学报（自然科学版）, 1996, 15(4): 1-7.