Calculation Model for Estimation of Residual Bearing Capacity of Damaged Reinforced Concrete Slender Columns

被引:3
|
作者
Kos, Zeljko [1 ]
Klymenko, Yevhenii [2 ]
Crnoja, Andelko [1 ]
Grynyova, Iryna [3 ]
机构
[1] Univ North, Dept Civil Engn, Varazhdin 42000, Croatia
[2] Odessa State Acad Civil Engn & Architecture, Dept Reinforced Concrete Struct & Transport Struc, Didrichson St 4, UA-65029 Odessa, Ukraine
[3] Odessa State Acad Civil Engn & Architecture, Dept Architecture Struct, UA-65029 Odessa, Ukraine
来源
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 15期
关键词
reinforced concrete columns; rectangular section; flexibility; residual bearing capacity; damage during operation;
D O I
10.3390/app12157430
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
This work is devoted to the study of the influences of various parameters on the bearing capacities of compressed reinforced concrete columns of varying flexibilities damaged during operation. Experimental tests of pilot samples were carried out, and results were analyzed on the basis of which it was established that significant longitudinal bending was observed in the direction of the x-axis. By analyzing the influences of the angle and depth of damage on the behavior and nature of the destruction in the experimental samples, three main destruction patterns were identified. An analysis of the experimental and statistical models showed that the greatest influences on the bearing capacity of the samples were the depth of the damage and the angle of the cut, and the effect of the height of the samples was virtually negligible. A model of calculation for the residual bearing capacities of compressed damaged reinforced concrete elements of different flexibilities was developed. The results of the comparison testify to the good coincidence of the theoretical values with the values obtained from the actual experiment (the difference of an average of no more than 29.8%), indicating that the proposed method can be applied in building practice.
引用
收藏
页数:15
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