举一反三
- Reinforced concrete beams work with cracks under normal load. A: 正确 B: 错误
- In terms of the flexural stiffness of reinforced concrete beams, which of the following statements is wrong. A: The bending stiffness of reinforced concrete beam varies in the process of loading B: The short-term bending stiffness of reinforced concrete beams is derived from the curvature relation of cross-section C: The short-term average bending stiffness is adopted in the deflection checking calculation D: The bending stiffness under long-term load is smaller than that under short-term load
- Reinforced concrete beam is under normal service loads, and A: it usually works with cracks B: once the cracks appear, the crack is passing through to the total section C: once the cracks appear, the bonding force between the concrete and the reinforcement along the full length is lost D: it usually does not develop cracks
- 论文标题英译汉： Softened Truss Model for Reinforced Concrete Beams under Torsion Combined with Axial Force
- Compared with plane concrete beams, reinforced concrete beams have much higher cracking resistance(抗裂能力).
内容
- 0
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
- 1
Compared with plain concrete beams, the ability of reinforced concrete beams to resist cracking is A: improved a little B: improved a lot C: totally the same D: None of the above
- 2
What are beams in reinforced concrete building? A: simply supported-beam B: built-in beam C: edge beam
- 3
Compared with plain concrete, the bearing capacity of reinforced concrete beams is A: the same B: improved a lot C: improved a little D: unable to be identified
- 4
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.