Geotechnical Analysis: Introduction

Question 1

What does GA allow us to quantify?

Answer 1

Soil-structure interaction based on load transfer and mechanical response.

Question 2

Which of the following are types of geotechnical structures?
A. Tunnels
B. Foundations
C. Earth dams
D. All of the above

Answer 2

D. All of the above

Question 3

What is the purpose of foundations?

Answer 3

To transfer structural load to the soil.

Question 4

Ground Source Energy Systems (GSES) utilise ___ differences for low carbon heating/cooling.

Answer 4

temperature

Question 5

What does GDF stand for, and what is its depth range?

Answer 5

Geological Disposal Facility; 200–1,000 m

Question 6

True/False)
Structural failures are usually due to failure of materials like steel and concrete.

Answer 6

False – often due to soil failure

Question 7

Define “scour.”

Answer 7

Erosion of soil around foundations by water, leading to instability.

Question 8

Soil mechanics lab tests include ___, triaxial tests, and direct shear box.

Answer 8

oedometer

Question 9

Name 3 classical methods of geotechnical analysis.

Answer 9

Elastic solutions
Limit equilibrium
Stress fields

Question 10

What are advanced methods of analysis?

Answer 10

Finite element and finite difference methods.

Question 11

What are the soil layers?

Answer 11

Sandy & clayey silts
Upper clay
Intermediate clay
Intermediate sand
Lower clay
Lower sand

Question 12

What challenges complicate geotechnical analysis?

Answer 12

• Soil/rock is a natural, heterogeneous material
• Solid–liquid–gas phases
• Complex mechanical, hydraulic, and chemical behaviour
• Nonlinear response