Experimental Research on Ultimate Shear Strength of Partially Prestressed Concrete Beams With Unbonded Tendons

Journal of Chongqing Jiaotong University(Natural Science) ›› 1991, Vol. 10 ›› Issue (1): 1-10.

Experimental Research on Ultimate Shear Strength of Partially Prestressed Concrete Beams With Unbonded Tendons

Yang Limei, Xiao Guanghong, Jiang Bingzhang

Bridge and Structure Engineering Department

Received:1990-06-13 Online:1991-02-25 Published:2016-11-09

无粘结部分预应力砼梁斜截面抗剪强度的试验研究

杨丽梅, 肖光宏, 江炳章

结构系

作者简介:杨丽梅,女,26岁,助教。
基金资助:
国家自然科学基金资助

Abstract

Abstract: This paper studies the effects of the prestress degree, the ratio of shear span to depth and the ratio of stirrup on the ultimate shear strength of the unbonded P.P. C. beams. The results of static loading data of 17 P.P. C. beams with unbonded tendons (straight tendon beams) are analyzed and an empirical formula is proposed. The results of this paper show that the propdsed ultimate shear strength is reasonable. Finally, our formula is compared with that of the P.P.C. beams with bonded tendons.

Key words: partially prestressed concrete, unbonded, the ratio of shear span, bonded, prestress degree, shear strength

摘要： 本文根据25根无粘结部分预应力砼梁中17根直筋梁的试验资料,分析讨论了预应力度、剪跨比及配箍率等对无粘结部分预应力砼梁抗剪强度的影响,在统计分析的基础上提出了相应的计算公式。公式概念清晰,精度可以满足使用要求。最后还将建议公式与有粘结预应力砼梁抗剪公式进行比较。

关键词: 部分预应力砼, 无粘结, 剪跨比, 配箍率, 有粘结, 预应力度, 抗剪强度

Yang Limei, Xiao Guanghong, Jiang Bingzhang. Experimental Research on Ultimate Shear Strength of Partially Prestressed Concrete Beams With Unbonded Tendons[J]. Journal of Chongqing Jiaotong University(Natural Science), 1991, 10(1): 1-10.

杨丽梅, 肖光宏, 江炳章. 无粘结部分预应力砼梁斜截面抗剪强度的试验研究[J]. 重庆交通大学学报（自然科学版）, 1991, 10(1): 1-10.

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