Bridge Bearings and Movements in Steel Structures

What is the primary function of bridge bearings?

Which of the following is NOT a cause of movements affecting bridge bearings?

What type of movement does a pin bearing permit?

What is the function of a rocker bearing?

What is the primary purpose of roller bearings in a bridge?

What is the primary role of bridge bearings?

Which type of bridge bearing permits rotational movement while preventing longitudinal movement?

What is the function of a roller bearing in a bridge?

What is the main purpose of a hinged rocker bearing in a bridge?

Which of the following is NOT a cause of movements affecting bridge bearings?

What is the primary purpose of a line rocker bearing in a bridge?

Which type of bridge bearing is designed to act as a seismic protector during earthquakes?

What is the main function of a pin bearing in a bridge?

Which of the following causes movements affecting bridge bearings due to changes in temperature?

What is the primary role of steel bridge bearings?

Bridge Bearings

The primary function of bridge bearings is to transfer loads from the superstructure to the substructure while allowing for movements caused by various factors.

Movements Affecting Bridge Bearings

Causes of movements affecting bridge bearings include temperature changes, wind, earthquakes, and vehicular loads.
Settlement of the foundation or pier is NOT a cause of movements affecting bridge bearings.

Types of Bridge Bearings

Pin bearings permit rotational movement while preventing longitudinal movement.
Rocker bearings permit rotational and translational movements.
The function of a rocker bearing is to permit rotational and translational movements.
Roller bearings permit longitudinal movement while preventing rotational movement, and their primary purpose is to allow for the translation of the superstructure.
Hinged rocker bearings permit rotational movement while preventing longitudinal movement, and their main purpose is to allow for the rotation of the superstructure.
Line rocker bearings permit rotational movement while preventing longitudinal movement, and their primary purpose is to allow for the rotation of the superstructure.
Seismic bearings are designed to act as seismic protectors during earthquakes.

Functions of Bridge Bearings

The primary role of steel bridge bearings is to transfer loads from the superstructure to the substructure while allowing for movements caused by various factors.
The main function of a pin bearing in a bridge is to permit rotational movement while preventing longitudinal movement.

This lecture covers the introduction and roles of bridge bearings in steel structures, including the causes of movements such as shrinkage, traffic loads, and temperature change. The functions of bridge bearings in connecting the superstructure to substructures are also discussed.