Rigid-frame bridge

High school (ages 12+)
Transportation

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/rigid-frame-bridge

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the structural configuration?Superstructure and substructure are rigidly integrated, forming a single continuous unit
2. What is the force transfer mechanisms?Transfers bending moments, axial forces, and shear forces between structural elements
3. What is a rigid‑frame bridge?A rigid‑frame bridge is built as one big connected piece where the deck, beams, piers, and abutments are all joined together so the whole structure works as one unit.
4. Why do rigid‑frame bridges need fewer expansion joints?Because the parts are connected tightly, the bridge moves as a single piece, so it needs fewer places where it can expand or contract.

Superstructure: The load-bearing elements of a bridge above the substructure, including the deck and supporting girders or trusses.
Substructure: The components of a bridge that support the superstructure, typically including piers, abutments, and foundations.
Monolithic Construction: A construction technique where a structure is formed from a single, continuous pour of material, creating an inseparable unit.
Bending Moment: The internal reaction induced in a structural member when an external force or moment causes it to bend.