1. Study on force transfer behavior of SRC members with stud shear connectors at elevated temperatures.
- Author
-
LI Junhua, YU Kai, QIU Dongliang, and WANG Guofeng
- Subjects
- *
REINFORCED concrete testing , *CONCRETE testing , *HIGH temperatures , *HEATING , *COLUMNS - Abstract
The static push-out tests of twenty steel reinforced concrete (SRC) short columns specimens with stud connectors in the surface of shape steel at elevated temperatures and two other comparative specimens at normal room temperatures were carried out to study the shear force transfer behavior on the interface between shape steel and concrete in SRC members at elevated temperatures. Test results show that the typical failure mode of steel reinforced concrete short columns with stud connectors at elevated temperatures is concrete split, which is almost the same as that at normal room temperatures. The ascending part of load-slip curves of specimens at elevated temperatures is more fiat than that at normal room temperatures, and the slip rigidity of specimens at elevated temperatures is lower than that at normal room temperatures. From normal room temperature to peak temperature lower than 400 °C, the shear transfer capacity declines fast with the increase of the highest temperature in the whole heating process and declines slow when the highest temperature exceed 400 °C. With the same highest temperature, the shear transmission capacity decline with the increase of time duration of the highest temperature. The calculating formula for shear transmission capacity of steel reinforced concrete with stud connectors at elevated temperatures was proposed. The calculating results of the formula are proved to be safe with test results. [ABSTRACT FROM AUTHOR]
- Published
- 2013