Title: Framework for analyzing the flexural resistance function of a precast concrete insulated wall panel: Beam-spring modeling and pertinent limit states
Date Published: January - February 2026
Volume: 71
Issue: 1
Page Numbers: 47 - 66
Authors: Zoe N. Lallas and Matthew J. Gombeda
https://doi.org/10.15554/pcij71.1-02

Click here to view the full article.

Abstract

This paper demonstrates the versatility of beam-spring modeling when calculating flexural resistance functions for precast concrete insulated wall panels. Modeling frameworks that accurately estimate the flexural strength of panels while identifying critical limit states are powerful tools for precast concrete engineers. Behavior quantification benefits panels that are designed to withstand conventional wind loading and be especially beneficial for more severe loading conditions, such as blast or seismic, where evaluating the nonlinear response of structures is pertinent. This paper provides a review of the mechanics and plausible limit states of these structures, develops the modeling framework reflecting the behavior of the components, and validates this methodology using comparisons with experimental test data and analytical case studies. Emphasis is placed on the influence of wythe connector shear resistance when determining efficient panel design configurations. This study shows that beam-spring modeling captures full nonlinear resistance functions and ductility of panels examined herein, providing insight on limiting failure modes for these structures.