10 Questions
What is the primary function of bridge bearings?
To connect the bridge superstructure to the substructure
Which of the following is a cause of movements in bridge bearings?
Shrinkage and creep
What is the function of roller bearings in a bridge structure?
To support high loads in a linear configuration
What is the role of pin bearings in a bridge structure?
To permit rotational movement and prevent longitudinal movement
How do recent bridge bearings act during earthquakes?
They act as seismic protectors that arrest and dissipate energy
What is the main function of bridge bearings?
To connect the bridge superstructure to the substructure
Which type of bridge bearing permits rotational movement but prevents longitudinal movement?
Rocker bearing
What is the role of recent bridge bearings during earthquakes?
To arrest and dissipate energy
What is the purpose of a roller bearing in a bridge structure?
To accommodate translational movements
Which force do bridge bearings transfer without causing wear or destruction to the substructure?
Dynamic forces and vibrations
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.
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.
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