Mehmet Tolga Göğüş

• Ph.D.
• Professor (Assistant) at Gaziantep University

This paper investigates the effect of fiber on the behavior of punching shear slabs; a finite element modeling approach is used to simulate the case study. The proportion mix of hybrid fiber-reinforced concrete, which contains 0.2 percent macro synthetic fibers and 0.68, 0.8, and 0.96 percent steel fibers, compressive strengths of 50 MPa, different...

Concrete is a brittle material when subjected to design and accidental impact loads, which are expected along the life span of the structure. To improve the impact performance of concrete, steel fibers are used as short discrete material reinforcing elements. Among the available impact test, the ACI 544-2R repeated impact test is considered as the...

This article presents the performance of cable-stayed bridge by representing a model using the ANSYS program under the influence of a concentrated load and then comparing them with the experimental results. One model was used in the analytical, and one was (harp type 1) used in the length of the girder (4,500 mm), height of the pylon (1,480 mm), an...

Despite that concrete is a fire-resisting construction material, its microstructure suffers significant chemical and physical changes when subjected to temperatures higher than 400 oC. Therefore, the combined effect of unexpected impacts and fire can lead to the collapse of the structure. To evaluate this combined effect, an experimental program wa...

The aim of this study is to analyze the usability of the prefabricated cage reinforcement system (PCS) as an alternative to the conventional reinforcement system in beams with self-compacting concrete under flexural loads. Within this framework, flexural performances of PCS reinforced T-section beams (TPCS) and conventional reinforced T-section bea...

The main purpose of this study was to empirically analyze the usability of prefabricated cage-reinforced composite beams with self-compacting concrete (SCCPCRC) and lightweight concrete (LWCPCRC) under flexural forces. The prefabricated reinforcement was created by the laser cutting of ready-made structural sections. A total of 18 samples with the...

The study presents a comparative experimental analysis of the flexural behavior of lightweight concrete and self-compacting concrete filled square steel tube beams subjected to pure bending. A total of 20 specimens including eight lightweight concrete-filled steel tube (LWCFST) beams, eight self-compacting concrete-filled steel tube (SCCFST) beams, and...

Self-compacting concrete-filled steel tube (SCCFST) beams, similar to other structural members, necessitate retrofitting for many causes. However, research on SCCFST beams externally retrofitted by bolted steel plates has seldom been explored in the literature. This paper aims at experimentally investigating the retrofitting performance of square s...

The aim of this paper is to investigate the performance of Lightweight Aggregate Concrete Filled Steel Tube (LWCFST) columns experimentally and compare to the behavior of Self-Compacted Concrete Filled Steel Tube (SCCFST) columns under axial loading. Four different L/D ratios and three D/t ratios were used in the experimental program to delve into...

İNŞAAT MÜHENDİSLİĞİNDE HAREKETLİ MEMBRAN YAPILAR İÇİN TASARIM METODOLOJİSİNİN GELİŞTİRİLMESİ ÖZET Bu çalışmada, son zamanlarda inşaat sektöründe kullanılmaya başlanılan farklı şekillerde biçimlendirilebilen, açılıp kapanabilir, hareketli yapılar için bütüncül bir tasarım yöntemi geliştirilmiş olup, çok fonksiyonlu ve iklim koşullarına uyum sağlaya...

In this paper, the integrated design methodology for flexible, responsively adaptable, deployable, kinematic structures, which are recently starting to use in the construction industry, has been developed and also intended to design a deployable structure which is multi-functional and adapting itself to climatic conditions. Integrated design method...

Since thin-walled structural analysis and design procedures are utilized for cold-formed steel columns, it is first necessary to understand thin plate behavior to employ proper cross sections which will serve under compression actions. As is well known, thin plates without any longitudinally and/or laterally stiffening elements usually are not pres...

In this paper, the basic finite element formulation of a newly developed family of variable thickness, curved, C(0) continuity Mindlin-Reissner model curved beam elements which include shear deformation and rotatory inertia effects is presented. The accuracy, convergence and efficiency of these newly developed curved beam elements are explored thro...

Today's high-strength materials allow for significant increases in working and limit stresses. To fully exploit material improvements as weight savings on structures, it is desirable to enhance the performance of structural components. The work presented in this paper proposes that the buckling behavior of cold form steel columns may be effectively...

This paper deals with the structural analysis and shape optimization of bells. Using modal analysis it is possible to reconstruct the dynamic behavior of the bell by superposition of the excited eigenmodes. An examination of the nodal participation reveals that only a few of these modes are importance to the perceived sound the bell makes. From suc...

This study proposes a new formulation for patch loading of longitudinally stiffened webs using stepwise regression (SR) for the first time in literature. The database for the SR formulation is based on extensive experimental results from literature. The results of the SR formulation are compared with existing models and design codes. It is found th...

This study presents the application of soft computing techniques namely as genetic programming (GP) and stepwise regression (SR) for formulation of strength enhancement of carbon-fiber-reinforced polymer (CFRP) confined concrete cylinders. The proposed soft computing based formulations are based on experimental results collected from literature. Th...

The selection of the most suitable contractor is crucial for the success of construction projects. An important task in contractor selection is to establish a set of decision criteria that can measure and judge the capabilities of contractors. Multiple Criteria Decision Support (MCDS) methods can be very useful to solve this problem. Several MCDS t...

An optimization procedure is presented for the minimum weight and strain energy optimization for arch structures subjected to constraints on stress, displacement and weight responses. Both thickness and shape variables defining the natural line of the arch are considered. The computer program which is developed in this study can be used to optimize...

This paper deals with the structural optimization of vibrating planar and space trusses. The objective of the present study is to develop a robust and reliable shape optimization tool for vibrating trusses. Natural frequencies are determined using standard finite element matrixdisplacement method. The fundamental concept is to generate structural s...

The present work is concerned with the structural shape optimization of vibrating arches. Natural frequencies and mode shapes are determined using curved, variable thickness, C(0) continuity Mindlin-Reissner finite elements. The whole shape optimization process is carried out by integrating finite element analysis, cubic spline shape and thickness...

This study proposes Neural Networks (NN) as a new approach for the estimation and explicit formulation of available rotation capacity of wide flange beams. Rotation capacity is an important phenomenon which determines the plastic behaviour of steel structures. Thus the database for the NN training is directly based on extensive experimental results...

This paper deals with the static analysis and shape optimization of linearly elastic arches. The finite element method is used to determine the stresses, displacements and strain energy based on variable thickness, C(0) continuity, Mindlin-Reissner shell theory. An automated analysis and optimization procedure is adopted which integrates finite ele...