高性能树脂混凝土加固混凝土偏压柱承载力理论分析

doi:10.13229/j.cnki.jdxbgxb20181157

摘要/Abstract

摘要：

对高性能树脂混凝土钢丝网薄层(HTRCS)加固RC偏压柱试验中试件的破坏机理、加固试件的承载力进行了理论分析,建立了裂缝平均间距与钢丝网周长的关系式，可对钢丝网层数与平均裂缝间距进行定量分析。利用半波曲线较好地拟合了不同钢丝网层数下试件横向挠度曲线方程。分析验证了加固试件对于不同荷载等级在变形过程中均满足平截面假定。基于条带法运用MATLAB程序对被加固结构的承载力进行理论值计算，与试验值比较误差在5%以内，因此用条带法进行承载力计算是合理可行的。

关键词: 桥梁工程, 树脂混凝土钢丝网薄层, 钢筋混凝土偏压柱, 加固机理, 理论分析

Abstract:

In this paper, based on the experiment conducted previously, failure mechanism and bearing capacity of strengthened specimens were analyzed theoretically. The relationship between the average crack spacing and the circumference of steel wire mesh was established, which can be used for quantitative analysis of the layers of steel wire mesh and the average crack spacing; The equation of transverse deflection curve of specimens with different layers of wire mesh was well fitted by half-wave curve; It was analyzed and verified that the reinforced specimens meet the plane section assumption during the deformation process for different load levels; Based on the strip method, the MATLAB program was used to calculate the bearing capacity of the HTRCS-reinforced RC eccentric column. The error was less than 5% compared with the experimental value. Therefore, it is reasonable and feasible to calculate the bearing capacity by the strip method.

Key words: bridge engineering, HTRCS, reinforced concrete eccentric column, reinforcement mechanism, theoretical analysis

中图分类号:

U445.6

蒲黔辉,刘静文,赵刚云,严猛,李晓斌. 高性能树脂混凝土加固混凝土偏压柱承载力理论分析[J]. 吉林大学学报(工学版), 2020, 50(2): 606-612.

Qian-hui PU,Jing-wen LIU,Gang-yun ZHAO,Meng YAN,Xiao-bin LI. Theoretical analysis of bearing capacity of concrete eccentric compressive column reinforced by HTRCS[J]. Journal of Jilin University(Engineering and Technology Edition), 2020, 50(2): 606-612.

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试件	理论值(1)	试验值(2)	(1)/(2)
S-T-2	53.47	51.62	1.036
S-T-3	56.44	53.86	1.048