Anti-Cracking Capacity of Inclined Section of Partially Prestressed Concrete Beams with Unbonded Tendons

Journal of Chongqing Jiaotong University(Natural Science) ›› 1991, Vol. 10 ›› Issue (2): 1-5.

Anti-Cracking Capacity of Inclined Section of Partially Prestressed Concrete Beams with Unbonded Tendons

Zhou Zhixiang, Jiang Bingzhang

Bridge and Structure Engineering Department

Received:1990-08-06 Online:1991-04-22 Published:2016-11-09

无粘结部分预应力砼梁的斜截面抗裂能力

周志祥, 江炳章

结构工程系

作者简介:周志祥,男,32岁,讲师。
基金资助:
中国自然科学基金

Abstract

Abstract: Oa the basis of the test results of 25 P. P. C, beams with. unbonded tendons, this paper investigates the influence of the degree of prestress, shear span-depth ratio and unbonded tendons on the anti-cracking capacity of inclined section of beams. A formula is put forward by the analysis of the theory and the study of the test. The formula coincides well with the test results.

Key words: unbonded tendoa, shear span-depth ratio, concrete strength, anti-cracking capacity

摘要： 本文依据25根部分预应力砼梁的抗剪试验结果,着重研究了预应力程度、剪跨比及无粘结力筋对梁斜截面抗裂能力的影响,在理论分析和试验研究的基础上,对斜截面抗裂能力提出了一个半理论半经验的计算公式,计算值与试验结果吻合较好。

关键词: 无粘结预应力, 剪跨比, 砼强度, 抗裂剪力

Zhou Zhixiang, Jiang Bingzhang. Anti-Cracking Capacity of Inclined Section of Partially Prestressed Concrete Beams with Unbonded Tendons[J]. Journal of Chongqing Jiaotong University(Natural Science), 1991, 10(2): 1-5.

周志祥, 江炳章. 无粘结部分预应力砼梁的斜截面抗裂能力[J]. 重庆交通大学学报（自然科学版）, 1991, 10(2): 1-5.

[1]	WU Xiaoguang1, HE Qilong1, 2, ZHENG Peng1, XIAO Kailong1. Influence Analysis of Concrete Strength on Time-Varying Reliability of Widening T-Beam Bridge Based on Support Vector Method [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(05): 33-38.
[2]	HUANG Zhi-tang,YANG Zhi-gang. The BP ANN model of concrete strength [J]. Journal of Chongqing Jiaotong University(Natural Science), 2004, 23(6): 50-52.
[3]	Zhou Zhixiang,Jiang Binzhang. Inquiry of Shear Strdngth of Partially Prcstressed Concrcte Beams with Unbonded Tendons [J]. Journal of Chongqing Jiaotong University(Natural Science), 1994, 13(S1): 23-30.
[4]	Zhou Zhixiang, Jiang Bingzhang. The Research on Anti-Cracking Strength for Inclined Section of Reinforced Concrete Beams [J]. Journal of Chongqing Jiaotong University(Natural Science), 1990, 9(3): 41-49.