What are beams in reinforced concrete building?
A: simply supported-beam
B: built-in beam
C: edge beam
A: simply supported-beam
B: built-in beam
C: edge beam
举一反三
- The truncated position of the longitudinal steel bar in the reinforced concrete beam is at the point where the steel bar is fully utilized.
- 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
- In the calculation of the bearing capacity of the normal section of a doubly reinforced concrete rectangular beam, the reason for the condition [img=63x27]1803b953249aa8d.png[/img] should be satisfied is to ( ). A: ensure the simplification of the calculation diagram B: avoid the occurrence of the over-reinforced failure C: ensure the compressive reinforcements yield at the failure of the beam D: ensure the tensile reinforcements yield at the failure of the beam
- The truncated position of the longitudinal steel bar in the reinforced concrete beam is at the point where the steel bar is fully utilized. A: 正确 B: 错误
- If [img=46x23]1803b95368d5b28.png[/img], the concrete fiber strain at the edge of the compression zone at the failure of the beam satisfies the condition [img=59x19]1803b95371d436c.png[/img], and at the same time, the tensile strain of the tensile reinforcements satisfies the condition [img=53x22]1803b95379d4907.png[/img], i.e., the tensile reinforcement has yielded at the failure of the beam, and the failure mode of such beam belongs to the over-reinforced failure.