Title:
Softened Membrane Model for Ultra-High Performance Concrete
Author(s):
Shahin
Publication:
Web Session
Volume:
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
10/23/2022
Abstract:
Understanding the shear behavior of UHPC members is crucial to avoid brittle responses that could be induced by diagonal shear cracks. This motivates the development of computational modeling methods that can capture the shear responses of UHPC members with good accuracy. However, most available modeling methods for UHPC members focus on simulating their flexure-dominant behavior, giving less or no consideration to shear-dominated effects. This research study utilizes the Softened Membrane model (SMM) to simulate the shear responses of UHPC panels that were tested in the Universal Panel Tester at University of Houston. To achieve good accuracy, a parametric study was conducted in order to calibrate a number of modeling parameters involved in the SMM. With the proposed modifications, the resulting SMM, named UHPC-SMM enables reliable calculations for the shear resistance of UHPC members. The intent of the research team is to incorporate UHPC-SMM in existing finite element frameworks and derive simplified analysis equations for use in practice.