Discuss its foundational principles, such as load analysis, material behavior, and structural design methodologies, in the context of constructing durable and resilient infrastructure. Explore the role of theoretical frameworks in optimizing structural integrity, ensuring safety standards, and accommodating diverse environmental conditions. Additionally, examine how advancements in computational modeling and simulation techniques enhance the theoretical underpinnings of civil engineering, facilitating innovation and efficiency in project execution. Ultimately, how does a robust theoretical base in structural engineering drive sustainable development and address contemporary societal challenges?"