Podcast
Questions and Answers
What is the primary function of bridge bearings?
What is the primary function of bridge bearings?
- To support lateral loads only
- To connect the bridge superstructure to the substructure (correct)
- To resist temperature changes
- To prevent any movement of the bridge structure
Which of the following is a cause of movements in bridge bearings?
Which of the following is a cause of movements in bridge bearings?
- Birds nesting under the bridge
- Noise from traffic
- Paint color on the bridge
- Shrinkage and creep (correct)
What is the function of roller bearings in a bridge structure?
What is the function of roller bearings in a bridge structure?
- To connect the superstructure to the substructure
- To support high loads in a linear configuration (correct)
- To contain a curved surface for translational movements
- To permit rotational movement and prevent longitudinal movement
What is the role of pin bearings in a bridge structure?
What is the role of pin bearings in a bridge structure?
How do recent bridge bearings act during earthquakes?
How do recent bridge bearings act during earthquakes?
What is the main function of bridge bearings?
What is the main function of bridge bearings?
Which type of bridge bearing permits rotational movement but prevents longitudinal movement?
Which type of bridge bearing permits rotational movement but prevents longitudinal movement?
What is the role of recent bridge bearings during earthquakes?
What is the role of recent bridge bearings during earthquakes?
What is the purpose of a roller bearing in a bridge structure?
What is the purpose of a roller bearing in a bridge structure?
Which force do bridge bearings transfer without causing wear or destruction to the substructure?
Which force do bridge bearings transfer without causing wear or destruction to the substructure?
Study Notes
Bridge Bearings
- The primary function of bridge bearings is to transfer forces from the bridge superstructure to the substructure while allowing for desired movements.
Causes of Movements in Bridge Bearings
- Movements in bridge bearings are caused by:
- Thermal expansion and contraction
- Shrinkage and creep of concrete
- Settlement of the substructure
- Seismic activity
Functions of Bridge Bearings
- Roller bearings in a bridge structure allow for longitudinal movement while restricting rotational movement.
- Pin bearings in a bridge structure permit rotational movement but prevent longitudinal movement.
Recent Bridge Bearings During Earthquakes
- Recent bridge bearings are designed to act as a seismic isolation system during earthquakes, reducing the transfer of seismic forces to the substructure.
Types of Bridge Bearings
- Pin bearings permit rotational movement but prevent longitudinal movement.
Forces Transferred by Bridge Bearings
- Bridge bearings transfer vertical and horizontal forces from the bridge superstructure to the substructure without causing wear or destruction to the substructure.
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Description
Learn about the roles and functions of bridge bearings in transferring forces between the bridge superstructure and substructures. Understand the causes of movements and the important function of connecting the bridge superstructure.
