A Fuzzy Inference System in Constructional Engineering Projects to Evaluate the Design Codes for RC Buildings

Abstract

Economical design of a building is one of the main aims that should be followed because of its importance in constructional projects. In order to have an economical design, longitudinal reinforcing bars in the reinforced concrete members are among those parts of the structure that can be designed economically. The application of fuzzy inference systems provides an effective tools to handle the uncertainties and subjectivities arising in the designing process of buildings. Therefore, the main purpose of this paper is to propose a fuzzy inference system to evaluate the building design codes from an economical point of view. For this purpose, after designing the mentioned fuzzy inference system, three examples of three-dimensional concrete buildings are analyzed and designed using different codes. For all these codes, the structural properties of concrete buildings, the gravity and the seismic loads are considered to be the same. Finally, it finds that the fuzzy logic theory is an effective and practical tool to compute a value that shows the distance between the designed building and the economically designed building. Also, it concludes that between the studied codes, (EUROCODE 2-1992, Hong Kong CP-04, CSA A23.3-04 and ACI 318-05), the ACI 318-05 and Hong Kong CP04 codes lead to a more economical design for taller buildings. For low-rise buildings, the CSA A23.3-04 and ACI 318-05 codes lead to an economical design. Also, the EUROCODE 2-1992 has a minimum value for the economical design of all the considered buildings.

Adaptive Fuzzy Asymptotic Tracking for Nonlinear Nonstrict-feedback Systems With Input Quantization

“…Kamgar et al (2018): If x : [0, ∞ ) → R is square integrable, thenand if truex˙(t),t∈[0,∞) exists and is finite, then…”

“…For the past few decades, some approximation-based fuzzy system models for nonlinear systems have gained wide attentions (see, e.g.,, Liu et al (2016); Kamgar et al (2018) and Park et al (2003)). The main idea of fuzzy control methods is that FLSs are applied to approximate the unknown nonlinear function, and the backstepping-based adaptive technique is used to design controller in a recursive way.…”

Economic Evaluation Method of Modern Power Transmission System Based on Improved Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and Best-Worst Method-Anti-Entropy Weight

“…Previous studies have often used single-dimension weights to evaluate economics, with some articles considering only subjective weights [22,23] (AHP, BWM), and some articles considering only objective weights [24,25](EWM, PCA). Combinations of subjective and objective methods are also often used in the field of evaluation [26,27].…”

Efficient Structural Design of a Prefab Concrete Connection by Using Artificial Neural Networks

“…In civil engineering, ANNs have been successfully used in automation and optimization [2,5,8], in material formulation [9], and in system identification and monitoring [10,11]. In structural analysis and design, the following applications could be highlighted [2,6,12]: structural analysis of systems with large degrees of freedom, size optimization of structural members, joint location, shape optimization of structural types (e.g., truss geometry), topology optimization (based on deletion of ineffective structural members), and maximum stress identification and location.…”

“…Focusing on the use of metaheuristic optimization algorithms to optimize structures, the works by Kaleh et al [26] and by Kaleh and Dadras [27] are remarkable. Focusing on economic issues, Kamgar et al [8] proposed a fuzzy inference system to evaluate the building design codes from an economic point of view.…”