In the heating curing of concrete, the loss of prestressing force caused by the difference in temperature between the tensile reinforcement and the tensile equipment only exists in the pretension component.
举一反三
- In the heating curing of concrete, the loss of prestressing force caused by the difference in temperature between the tensile reinforcement and the tensile equipment only exists in the pretension component. A: 正确 B: 错误
- The main difference of the failure characteristics between the large and small eccentrically compressed reinforced concrete members is whether the reinforcement on the far-side from the axial force is in tension or compression at the failure.
- Which of the following is not the reason why concrete needs reinforcement? A: Reinforcement has good tensile resistance, while concrete has good compressive resistance. B: Reinforcement has good compressive resistance as concrete. C: Engineers prefer ductile failure to brittle failure of the members. D: Reinforcement and concrete can work together to increase the bearing capacity of the members.
- 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.
- Reinforced concrete has steel bars that are placed in the concrete to carry tensile forces.