A: The external loads act on the longitudinal symmetric plane of the member;
B: The members are only bent without torsion and tension deformation;
C: The load on the member is only concentrated couples;
D: There is no shear force on each cross section of the member, and the bending moment is a constant.
举一反三
- For plane bending the characteristics of deformation are ( ). A: The cross section remains plane when bent; B: The axis after deformation is a plane curve; C: All external loads act on the same plane; D: The axis after deformation is in the same plane with the loading plane.
- The section where the bending moment diagram has abrupt change is: () A: Section with concentrated load B: Section with zero shear force C: Section with zero load D: Section with concentrated couple
- As shown in the figure, which of the following is true （ ）[img=575x436]1803a03bbd6c2c3.png[/img] A: The structure is a truss. B: The structure is a composite structure in which only member 57 is two-force member (truss member). C: Only member 34 has bending moment. D: All members except member 123 are truss members.
- When calculating the displacement of composite structure: A: Only bending moment is considered B: Only axial force is considered C: Bending moment and shear force are considered D: Bending moment and axial force are considered
- The internal forces in a thin plate under bending deformation include: A: bending moment B: twisting moment C: shear force D: axial force
内容
- 0
Which of the following cases must consider bending shear stress? A: The span of the beam is large（l / h >; 5） B: A large load is applied near the support C: When the bending moment is negative
- 1
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
- 2
In the following members, which one can be treated as axially loaded member? A: shear wall B: frame beam C: frame column D: member in steel truss
- 3
Due to the pure bending deformation, the longitudinal ( ) strain varies ( ) from ( ) at the neutral axis to a maximum at the outer fibers of the beam. A: normal; linearly; zero B: shear; nonlinearly; zero C: shear; nonlinearly; zero D: shear; nonlinearly; zero
- 4
When member is subjected to the eccentric loads, the wrong description of neutral axis is ( ). A: The position of the neutral axis is independent of external forces and eccentricity B: The neutral axis and the point of the external force are on opposite sides of the cross section centroid respectively C: The neutral axis is related to the shape and size of the section D: The closer the external force point is to the centroid, the farther the neutral axis is from the centroid