The maximum strain in the tension reinforcement in the section at failure is（）
举一反三
- The main failure modes of inclined section of flexural members can be ordered as ( ) from high to low according to the corresponding shear capacity. A: inclined tension failure > shear-compression failure> inclined compression failure B: shear-compression failure > inclined tension failure > inclined compression failure C: inclined compression failure > shear-compression failure> inclined tension failure D: shear-compression failure> inclined compression failure > inclined tension failure
- The main failure modes of inclined section of flexural members can be ordered as ( ) from high to low according to the corresponding shear capacity. A: inclined tension failure > shear-compression failure> inclined compression failure B: shear-compression failure > inclined tension failure > inclined compression failure C: inclined compression failure > shear-compression failure> inclined tension failure D: shear-compression failure> inclined compression failure > inclined tension failure
- Among the main failure modes of the inclined section in flexural members, the inclined tension failure and the inclined compression failure belong to brittle failure, and the shear-compression failure belongs to ductile failure.
- 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.
- For a bar under axial tension, the sections with the maximum normal stress and maximum shear stress are A: the cross section and inclined section with inclined angle 45°, respectively. B: both the cross sections. C: the inclined section with inclined angle 45°and cross section, respectively. D: both the inclined sections with inclined angle 45°.