failure under variable amplitude stress cycles is assessed using Miner’s rule.
A: fatigue
B: break
C: compressive
D: bending
A: fatigue
B: break
C: compressive
D: bending
举一反三
- 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.
- For fully prestressed concrete under the service load, in the section of concrete member A: Tensile stress is allowed to occur B: No tensile stress occurs C: Allow for cracks D: There is no compressive stress
- 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
- Compared to using a fixed-rule monetary policy, using a feedback rule monetary policy:（） A: will stabilize aggregate demand. B: will reduce inflationary cycles. C: may make economic cycles more severe.
- In the calculation of the bearing capacity of the normal section of a T-shaped reinforced concrete beam, it is assumed that ( ) within the effective width of the compressed flange. A: the compressive stress is uniformly distributed B: the compressive stress is distributed in a parabolic shape C: the compressive stress is distributed in a triangle shape D: the compressive stress is distributed partly uniformly and partly non-uniformly