15 Questions
What type of forces can a truss member be subjected to?
Axial forces
Which part of the truss sustains bending forces?
Top and bottom members
What is the role of chord members in a truss bridge?
Act like flanges in a beam and resist bending forces
What is the function of stringers in a truss bridge?
Are longitudinal beams, parallel to the traffic, support the deck and transfer its load to beams
What is the main advantage of truss structures over beams?
Efficient in exploiting the strengths of materials as only axial forces are resisted in members
Truss bridges are less efficient in exploiting the strengths of materials compared to beams due to the presence of axial forces only.
False
Chord members in a truss bridge resist forces caused by shear.
False
Stringers in a truss bridge are longitudinal beams perpendicular to the traffic direction.
False
I-shaped beams are not considered a good option for handling the forces in truss bridges.
False
Truss bridges are less rigid than beams due to the dissipation of loads through many members.
False
Truss members are only subjected to axial forces and not bending or shear forces.
False
Chord bracing is used to ensure truss stability and resist wind loads.
True
Floor beams in a truss bridge are parallel to the traffic direction.
False
The top and bottom members of a truss bridge sustain bending forces, while diagonal members sustain shear forces.
True
Truss bridges are less efficient in exploiting the strengths of materials compared to beams due to the presence of axial forces only.
False
Study Notes
Truss Members and Forces
- Truss members can be subjected to axial forces only, and not bending or shear forces.
Truss Bridge Structure
- Chord members resist forces caused by axial forces and sustain axial forces, not bending forces.
- Stringers are longitudinal beams perpendicular to the traffic direction.
Advantages and Disadvantages of Truss Structures
- Truss structures have the main advantage of being more efficient in exploiting the strengths of materials compared to beams.
- Truss bridges are less rigid than beams due to the dissipation of loads through many members.
Truss Bridge Design
- Chord bracing is used to ensure truss stability and resist wind loads.
- Floor beams in a truss bridge are parallel to the traffic direction.
- The top and bottom members of a truss bridge sustain axial forces, while diagonal members sustain shear forces.
Learn about truss bridges and their concepts, including the structure of members connected at joints, the forces acting on truss members, and the distribution of compression and tension.
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