The Crack Width Calculation Program for Structural Concrete Members Based on a Limit State Design

초록

Serviceability performance verification of concrete structural members predicts whether the crack width satisfies requirements at the service load step. The correct calculation of steel stress is important for serviceability performance verification. In this paper, we define the material characteristics of concrete by a parabolic-rectangular stress-strain relation and proposed algorithms that calculate steel stress accurately using a trial-and-error method. We developed a program that automatically calculates the crack width for serviceability performance verification by a design code such as the CEB-FIP Model Code 1990, EUROCODE 2, JSCE PBD, and ACI 318 CODE 1995. We tested our program using experimental data to verify the accuracy of the results.