SAP2000 Sub-Models

In this video, we will explore how to create sub-models that take into account different boundary conditions for the same structure, avoiding the need to duplicate SAP2000 model files. By adopting this strategy, we keep all sub-models inside one SAP2000 file, generating a single project where we can handle multiple boundary configurations—soil-structure interaction alongside fully fixed conditions—without duplicating effort. This integrated approach streamlines our design checks, reporting, and future revisions, significantly reducing the chance of errors. In summary, we will use rigid link elements to represent fixed behavior, created separate sub-models for each boundary scenario, duplicate our load cases and combinations, and make sure the design process captures both conditions simultaneously. As a result, we will check which scenario governs each steel member and show how it is possible to compile a single comprehensive output, all while minimizing repetitive editing and potential oversights. Key Takeaways: - A single SAP2000 file can handle both soil-structure interaction and fully fixed boundaries. - Rigid link elements simulate the fixed condition, while a mat foundation represents soil-structure interaction. - Sub-models, generated through staged construction load cases, let you switch between boundary conditions efficiently. - Duplicating analyses and load combinations covers all scenarios without separate project files. - Centralizing everything in one file reduces editing time and risk of errors, and provides quick insights into which scenario governs each member’s design. Learn more: https://structuralacademy.com/article/en/sub-modelos-csi