AStrutTie is a strut-tie model analysis/design software for concrete members with disturbed stress region(s). It enables users to automatically analyze/design the optimal strut-tie models using machine learning techniques. Also, the software supports templates for efficient structural modelings for strut-tie model analysis/design.

Why Strut-Tie Model

A concrete member can be classified into B-region(s) and D-region(s). D-regions are parts of structure in which the strain distribution is highly nonlinear. Most design practices for D-regions are mostly based on empirical approaches. The strut-tie model approach promotes a better under-standing of load transfer mechanisms and structural behavior and it improves the designers' ability to handle unusual circumstances including D-regions.

Optimum Solution for Strut-Tie Model Approach

AStrutTie is a powerful and practical analysis/design software for concrete members with D-region(s). The most appropriate strut-tie models can be constructed by considering the principal stress flows and/or evolutionary structural optimization (ESO) results. A specialized solver capable of handling any types of internally/externally (in)determinate strut-tie models is associated. The strut-tie model provisions of ACI 318, AASHTO LRFD, and EC2 are applied.

Automatic STM Analysis/Design by Machine Learning

One of the critical elements in applying the strut-tie model method is the development of an appropriate design model for the internal force flows through the structures. AStrutTie automatically develops the strut-tie model matching principal compressive stress flow using machine learning techniques. With AStrutTie, structural engineerings can efficiently conduct the concrete structures' analysis/design using the optimal strut-tie model.

Efficient Structural Modelings for Strut-Tie Model Design

For fast and efficient strut-tie model designs, multirole templates are provided for corbel (bracket), abutment footing, pier footing, bridge pier coping (pier cap), frame corner, anchorage zones with inclined and straight tendons, and deep beams with concentrated and distributed loads. The shapes of concrete members and truss models can also be generated by importing .dxf files. Advanced element sets representing truss mechanism, truss and arch mechanism, and fan action are provided.

Systems for Automated Design Checks and Structural Design Report

AStrutTie provides various automated design checks regrading the conditions for rebar requirement and strength verification of struts and nodal zones. Visual verifications of strength conditions are possible, too. A structural design report is generated automatically, and design results are examined by previewing the report. The structural design report is printed as a *.rtf or *.xlsx file.

Problems in Strut-Tie Model Analysis/Design of Structural Concrete

·Uncertainity in the construction of an appropriate strut-tie model due to lack of general and comprehensive specifications

·Inefficiency in the construction of strut-tie models representing load transfer mechanisms for multiple load combinations

·Enormous time and efforts for examining the suitability of a constructed strut-tie model that satisfies the strength condidtions of struts and nodes

- This manual is subject to change without notice to improve the product. -