Under the same material conditions, as the flexibility increases, ( ).
A: The critical stress of the long column decreases while that of the medium flexibility bar remains unchanged.
B: The critical stress of the intermediate column decreases while that of the large flexibility bar remains unchanged.
C: The critical stress of the large and the intermediate column are both decreased.
D: The critical stress of the large and the intermediate column are both unchanged.
A: The critical stress of the long column decreases while that of the medium flexibility bar remains unchanged.
B: The critical stress of the intermediate column decreases while that of the large flexibility bar remains unchanged.
C: The critical stress of the large and the intermediate column are both decreased.
D: The critical stress of the large and the intermediate column are both unchanged.
举一反三
- Among the following conclusions about the critical stress σcr of the compressive column, the correct one is ( ). A: The σcr value of the long column is independent of the material B: The σcr value of the intermediate column is independent of the flexibility C: The σcr value of the intermediate column is independent of the material D: The σcr value of the small flexibility column is independent of the flexibility
- Among the following conclusions about the critical stress σcr of the compressive column, the correct one is ( ) A: The σcr value of the long column is independent of the material B: The σcr value of the intermediate column is independent of the flexibility C: The σcr value of the intermediate column is independent of the materia D: The σcr value of the small flexibility column is independent of the flexibility
- The compression bar belongs to a slender bar. Whether it is a medium long bar or a short thick bar is determined according to the () of the compression bar. A: length B: Cross section size C: Critical stress D: flexibility
- Under a certain long-term load, concrete would creep. In the reinforced concrete axial compressive members: A: Creep increases the compressive stress of concrete. B: The compressive stress of concrete and steel bar keeps unchanged. C: Creep decreases the compressive stress of concrete and increases the compressive stress of steel bar. D: Creep increases the compressive stress of concrete and decreases the compressive stress of steel bar.
- When a column is subjected to an eccentric load, the stress induced in the column will be ( ) A: direct stress only B: bending stress only C: shear stress only D: direct and bending stress both