Mohammad Javad Moradi

Machine learning (ML) methods in structural engineering are typically applied to predict single values, such as failure load. This study presents an advanced application of ML by predicting five critical points on the load-deflection curve of fabric-reinforced cementitious matrix (FRCM)-strengthened rectangular beams. Three separate ML models were...

This study investigates the effectiveness of fabric-reinforced cementitious matrix (FRCM) systems in enhancing the flexural and shear capacities of reinforced concrete (RC) T-beams. The study also includes a comprehensive review of existing experimental tests on FRCM-strengthened beams, highlighting key trends and gaps in the literature. It reveals...

Seismic performance of steel moment-resisting frames is investigated through the incorporation of U-shaped metallic dampers. The primary objective is to assess the effectiveness of these dampers in mitigating seismic responses by utilizing various analysis techniques. Two representative structural configurations (5 and 10-story) are studied in both...

In this paper, the feasibility of strengthening a flat column-slab connection within the carbon fiber reinforced polymer (CFRP) has been investigated through experimental study. The experimental program includes a set of nine reinforced concrete flat slab specimens. Three unaltered specimens served as control slabs, while an additional six samples...

The practical application of Artificial Intelligence (AI) approaches in estimating the mechanical properties of fiber-reinforced concrete (FRC) subjected to high temperatures was initiated by developing a dataset including concrete mixtures, geometrical and mechanical properties of fiber, and temperatures. The dataset contains compressive strength,...

Fire poses a major risk to the structural integrity of a bridge or progressively to the bridge's failure. This study uses an Artificial Neural Network (ANN) to investigate the determining factors in bridge fire incidents. Implementation of this powerful model produces an estimation of the damage levels. The basis of the proposed model is determined...

In this study, an artificial neural network (ANN) model was developed to predict the compressive strength of concrete containing supplementary cementitious materials (SCMs) at high temperatures. For this purpose, 500 experimental results were collected from the available literature. The effective parameters in the model are the volumes of coarse an...

The construction of integral bridges is one of the most effective methods to reduce bridges’ construction and in-service costs. However, there are associated geotechnical problems with their abutments backfill due to the integrated abutments. The main goal of this study is to evaluate and quantify the benefits of geogrid reinforcement for reducing...

One of the practical ways to overcome the adverse environmental effects of plastic bottle waste is to implement bottles into concrete, one of the most widely used materials in the construction industry. Plastic bottles are mainly made of polyethylene terephthalate (PET) and can be used as a fiber to reinforce concrete. In recent years, PET fiber-re...

The potential collapse of heavy components in fires can cause dynamic loads on slabs triggering a progressive collapse of weakened slabs on lower floors. In this study, three reinforced concrete (RC) slabs heated under ISO-834 standard fire for 30, 45, and 60 min, while one slab used as a control specimen. The effects of impact loads due to the fal...

Several advantages of supplementary cementitious materials (SCMs) have led to widespread use in the concrete industry. Many various SCMs with different characteristics are used to produce sustainable concrete. Each of these materials has its specific properties and therefore plays a different role in enhancing the mechanical properties of concrete....

The performance of both non-spliced and spliced steel bars significantly affects the overall performance of structural reinforced concrete elements. In this context, the mechanical properties of reinforcement bars (i.e., their ultimate strength and strain) should be determined in order to evaluate their reliability prior to the construction procedu...

The presence of openings greatly affects the response of unreinforced masonry (URM) walls. This topic greatly attracts the attention of many researchers. Perforated unreinforced masonry (PURM) walls under in-plane loads through the truss discretization method (TDM) along with several machine learning approaches such as Multilayer perceptron (MLP),...

Shear walls are lateral load-resisting systems that provide lateral strength and stiffness in order to reduce the horizontal sway of a building. Over recent years, composite shear walls with steel-encased profiles (CSRCWs) have attracted increasing attention. This paper aims to numerically investigate the impact of axial loads on the seismic behavi...

The advantages of using Metakaolin (MK) as a supplementary cementitious material have led this highly active pozzolan to be widely used in the concrete industry. Awareness of the parameters affecting the mechanical properties of concrete containing MK, determining the effectiveness of each parameter, and also the ability to estimate the compressive...

The aim of this paper is to present and put at disposal a reliable numerical procedure called MPM (Multi-Pier Macro) method that can be used by unexperienced practitioners by means of a software equipped only with non-linear truss elements with softening for the progressive failure analysis of large scale perforated masonry walls in-plane loaded. T...

The reliability of reinforced concrete (RC) structures can be estimated based on the required capacity ratio. The structural demand increases with population growth and climate change, while the capacity is reduced by rebar corrosion and concrete deterioration. Several engineering structures (e.g., bridges deck and harbors) are susceptible to both...

Search for enhancing the efficiency has led to composite structures such as concrete-filled steel tubes (CFST) with increasing applications across the world. The fire performance of CFST columns needs to be understood comprehensively. In this paper, the effectiveness of the most important parameters on fire resistance rating (FRR) and residual stre...

a b s t r a c t Corrosion is one of the major causes of significant deterioration in Reinforced Concrete (RC) structures. Dynamic loads and local impacts can exacerbate the conditions of structures caused by corrosion. This paper investigated the dynamic behavior of RC slabs with corroded reinforcement and evaluated the effects of strengthening us...

Perforations adversely affect the structural response of unreinforced masonry walls (UMW) by reducing the wall’s load bearing capacity, which can cause serious structural damage. In the absence of a reliable procedure to accurately predict the load bearing capacity and stiffness of perforated masonry walls subjected to in-plane loadings, this study...

The aim of this paper is to propose a novel 3D truss-like approach called Multi Pier (MP) to analyze the out-of-plane non-linear static behavior of masonry walls. The use of truss elements allows the model to be time-saving, accurate and implementable into a commercial FE software equipped with only non-linearity for 1D elements; consequently, it i...

Application of fiber reinforced concrete (FRC) has been increased in the past decade due to its enhanced structural performance. Therefore, it is important to fully characterize its static and dynamic behavior under different loading scenarios. In this paper, the effects of low-percentage steel fibers with four different fiber volume is investigate...

Several simplified and advanced methods have been proposed to evaluate the behavior of masonrywalls under in-plane loads, but their implementation in standard commercial software remains still an exception. In this paper, a novel 1D approach called Multi-Pier MP method, which has the advantage that can be used in a commercial software and requires...

As a lateral load-bearing system, the steel plate shear wall (SPSW) is utilized in different structural systems that are susceptible to seismic risk and because of functional reasons SPSWs may need openings. In this research, the effects of rectangular openings on the lateral load-bearing behavior of the steel shear walls by the finite element meth...

Producing high performance concrete with a low reactivity pozzolan such as metakaolin is challenging. On the other hand, high performance concretes could be more prone to shrinkage cracking due to their higher cement content. No consensus exists in the literature on how metakaolin affects concrete's shrinkage. In this study, the possibility of maki...

There is a large amount of useful information from past experimental tests, which are usually ignored in test-setup for the new ones. Variation of assumptions, materials, test procedures, and test objectives make it difficult to choose the right model for validation of the numerical models. Results from different experiments are sometimes in confli...

This paper deals with the modeling of punching shear failure in reinforced concrete slabs using nonlinear finite element analysis. The 3D finite element analyses (FEA) were performed with the appropriate modeling of element size and mesh, and the constitutive modeling of concrete. The FE numerical models are validated by comparing with the experime...

در سال¬های اخیر تقویت سازه¬های بتن آرمه با استفاده از کامپوزیت های FRP مورد توجه زیادی قرار گرفته که در این میان تقویت دال-های دوطرفه به خصوص جهت افزایش مقاومت پانچ کمتر مورد مطالعه قرار گرفته است. مزایای دال¬های دوطرفه مخصوصاً دال¬های تخت سبب کاربرد زیاد این نوع سازه شده است؛ ولی این سیستم¬ها با مشکلاتی نظیر خیز زیاد و برش پانچ مواجه هستند. در این...