Musa Hakan Arslan

• Prof. Dr
• Professor (Full) at Konya Technical University

In earthquake-prone areas, it is extremely important to carry out risk analyses of existing buildings and to take proactive measures in advance of potential earthquakes. Despite the availability of Rapid Seismic Assessment Methods (RSAMs), prioritising the seismic risk of buildings is a significant challenge due to the large number of residential b...

The earthquakes in Türkiye on February 6, 2023, resulted in devastating losses, impacting approximately 14% of the country's population and causing severe structural damage to historic buildings. This study focuses on the historical structures in Hatay, Adıyaman, and Kahramanmaraş, with particular attention to Şanlıurfa, home to some of humanity's...

Investigation of the use of 3DPC technology in post-earthquake temporary housing production by experimental, statistical and numerical modeling

Bu çalışmada, kesme kapasitesi yetersiz betonarme kirişlerin güçlendirilmesinde yenilikçi bir yöntem olan Mekanik Çelik Dikiş (MÇD) uygulaması araştırılmıştır. Çalışmada kesme açıklığı/faydalı yükseklik (av/d = 2.5, 3.3 ve 4.9) oranına göre kiriş davranış değişimi deneysel olarak incelenmiştir. Bunun için av/d = 2.5 seçilerek bir referans ve dört g...

The Kahramanmaraş earthquake couple, which took place on February 6, 2023, is one of the biggest disasters Türkiye has encountered in the instrumental period. While the effects of these earthquakes were felt primarily in 11 different provinces, they also caused significant effects in many other provinces. These two independent earthquakes of magnit...

In this study, the plastic hinge lengths of reinforced concrete (R/C) cantilever shear walls were analytically determined considering various design parameters. Nonlinear static (Pushover) analyses were conducted on R/C shear wall models and their nonlinear behavior was examined using ABAQUS software. In the study, 72 shear wall models with differe...

This study conducted a series of experimental works to repair and strengthen beams with different flexural and shear damage levels using various repair/strengthening techniques such as carbon fiber-reinforced polymer (CFRP), steel plate (SP), and mechanical steel stitches (MSS). Within the scope of the study, post-strengthening performances of pre-...

Variable cross-section pre-stressed precast concrete purlin (PPCP) members are frequently used in industrial buildings. Lightening these elements, which create a significant weight on the roof plane, is extremely important to reduce both concrete consumption and the weight that will affect the earthquake force. The voids left in the purlin bodies c...

This study used digital image processing and an artificial neural network (ANN) to determine the compressive strength of concrete in reinforced concrete buildings without coring. First, 32 concrete samples were produced in the laboratory, with different water-to-cement ratios, aggregate types, amounts of binder, compression values applied to fresh...

In this study, beams with insufficient shear capacity were reinforced with U-shaped Mechanical Steel Stitches (MSS), which is an innovative approach. MSSs were applied at an angle of 45 degrees along the shear span on both faces of the beam body. A total of eight shear beam specimens, one of which is a reference and the other seven with different M...

Large-scale loss of life and property occurred in Kahramanmaraş and its districts, which are the city center where the epicenters of the earthquake couples that occurred on February 6, 2023, in Türkiye. Major damage has occurred in different structural systems due to the earthquake. In addition, fault traces that are the source of the earthquake we...

The present paper summarizes the results of an experimental program on the influence of using waste lathe scraps in the concrete mixture on the shear behavior of RC beams with different amounts of shear reinforcement. Three different volumetric ratios (1, 2 and %3) for the scraps and three different stirrup spacings (160, 200 and 270 mm) were adopt...

Purpose: It is known in the literature that beams with low shear capacity are strengthened by different techniques. This study investigated the strengthening of beams with low shear capacity with a new Mechanical Steel Stitches (MSS) technique. It is seen in a limited number of studies in the literature that the shearing capacity of beams is improv...

The 06 February 2023 Kahramanmaras¸ Earthquakes, which were the disaster of the century for Türkiye and in which more than 50,000 people lost their lives, caused many buildings to collapse or receive significant structural damages. Adıyaman is one of the provinces that caused the most destruction by earthquakes affecting 11 different provinces,...

In recent years, studies on the use of car tyre wastes in concrete have gained momentum. Especially, the effect of recycled waste steel wires (RWSWs) from tyres to be mixed into concrete for using in newly designed reinforced concrete buildings on the performance of construction elements is a fairly new research area. In this study, the bending beh...

In this study, a parametric study was performed considering material properties of concrete, material properties of steel, the number of longitudinal reinforcement (reinforcement ratio), CFRP ply orientations, a number of layers as variables by using ABAQUS. Firstly, the parameters used in the Hashin failure criteria were verified using four coupon...

The Reinforced Concrete (RC) buildings in countries within earthquake zones like Turkey are generally damaged more than anticipated during earthquakes. Corrosion of reinforcement and other damages caused by the corrosion are also widely encountered in relatively old structures that have not received adequate engineering services. Although it is not...

Many factors affect the earthquake vulnerability of reinforced concrete (RC) structures, constituting a large part of the existing building stock. Short column in RC structures is one of the reasons for earthquake damage. Significant damages may occur due to brittle fractures in structural elements when the shear resistances are exceeded under the...

Reinforced concrete dapped-end (purlin) beams are frequently used in prefabricated industrial structures. The main task of these beams is to safely carry the loads on the roof. Considering the number of these purlin beams in industrial buildings, it is extremely important for manufacturers to product these beams with less concrete without reducing...

The geometric properties of the support region of dapped end beams (DEBs) cause a significant change in the ratio of the distance between the support and suspension reinforcement (a) to the effective depth (d). This ratio is effective in the shear capacity of DEB. In addition, in the ratio of the distance of the load on the beam from the support (a...

This study conducted a comprehensive experimental and numerical assessment to investigate the effect of plastic circular balls placed in the middle of a section of a reinforced concrete slab on strength, ductility, thermal, and acoustic performance. The ball diameter/slab thickness (D/H), grades of concrete, and longitudinal tensile reinforcement r...

Bu çalışmada kesme kapasitesi yetersiz betonarme kirişlerin güçlendirilmesine yönelik pratik, ekonomik ve inovatif bir güçlendirme yöntemi araştırılmıştır. Bunun için kesme açıklıkları boyunca kirişin her iki yüzüne dıştan U şeklinde Mekanik Çelik Dikişler (MÇD) 45° ve 90° açı ile uygulanmıştır. Yapılan güçlendirme sonrası değişen davranış değişiml...

In parallel with the increase in vehicle sales worldwide, waste tires are becoming an increasing problem. The storage and disposal of these waste tires are critical environmental problems. Re-using these wastes in different areas instead of being disposed of is vital in preventing environmental pollution and creating new low-cost products. From thi...

In this study, earthquake performance of the structures was tested which were modelled according to the minimum criteria of simplified analysis approach proposed in TBEC-2019. For this purpose, 144 reinforced-concrete building models were designed according to parameters such as earthquake design class, building height (number of storey), number of...

In this study, the impacts of different proportions of tension reinforcement and waste lathe scraps on the failure and bending behavior of reinforced concrete beams (RCBs) are clearly detected considering empirical tests. Firstly, material strength and consistency test and then ½ scaled beam test have been carried out. For this purpose, a total of...

In this study, reinforced concrete beams with insufficient shear capacity were strengthened on both sides of the beam along the shear openings by a novel approach: Mechanical Steel Stitches (MSS). This innovative method facilitates the application of strengthening the beams with a low-cost solution. In this concept, six specimens were experimentall...

In this study, the behavioral changes of reinforced concrete T-beams with insufficient shear strength under vertical loads as a result of strengthening with glass fiber reinforced polymer composites (GFRP) in various configurations was investigated comparatively. Nine reinforced concrete T-section shear-critical beams were produced. One of the beam...

Gelişen yazılım teknolojisi ile birlikte tasarımcı, seçilen deprem yönetmeliğine göre yapının analizini paket programlar yardımıyla kolaylıkla yapabilmektedir. Deprem yükünün tespitinde en önemli aşama yapının doğal titreşim periyodunun belirlenmesidir. Yönetmelikler tasarımcının, basit periyot bağıntıları (amprik) ve fiktif kuvvetler altındaki dep...

In practice, especially the basement floor beams are drilled and damaged by the users. In some cases, this damage to the beams can be significant for the load-bearing element and the whole structure. In this study, the behavior of reinforced concrete beams with circular openings and the failure types resulting from strengthening these beams with CF...

Strengthening of shear deficient T-beams is not as easy as rectangular beams due to the presence of slabs. In this study, externally bonded reinforcement (EBR) such type of reinforced concrete shear deficient T-beams with and without anchorage in different CFRP configurations was experimentally and analytically investigated. Pursuant to this goal,...

The prevention of the shear damage that may occur in the immediate surroundings of the columns on flat slabs due to punching is an important subject. In the literature, several experiments have been carried out by using the FRP composite bars to increase the punching strength of the flat slabs. In this study, firstly, an extensive literature review...

Betonarme bir yapı elemanında özellikle eğilme momenti etkisi altında donatıda kenetlenme problemi olmaması gerekmektedir. Diğer türlü yeterli bindirme boyu olmayan boyuna donatılar sıyrılarak elemanda gevrek güç tükenmesi oluşturabilirler. Kapasite tasarımı gereği son derece tehlikeli olan ve ani olarak meydana gelen bu güç tükenmesi durumunun bet...

Türkiye’de prefabrike betonarme taşıyıcı sistemler pek çok avantajından dolayı sanayi yapılarında sıklıkla tercih edilmektedir. Bu sistemlerin en büyük dezavantajı açıklıklara bağlı olarak artan kesit boyutları, yapının ağırlığı ve taşıyıcı sistem maliyetidir. Prefabrike betonarme sanayi yapılarında taşıyıcı sistem elemanlarından aşıklar binanın ağ...

A 6.8-magnitude earthquake that occurred on January 24, 2020, has been effective in Turkey’s eastern regions. The earthquake, with recorded peak ground acceleration (PGA) value of 0.292 g, caused the destruction or heavy damage of buildings, especially in the city center of Elazığ province. The purpose of this paper was to share the results of deta...

Shear and bending strength of reinforced concrete beams depend on many parameters. It is extremely important to take the necessary precautions in terms of shear in order for the beams to reach their bending capacity. For this reason, it is necessary to determine the effective parameters especially on shear capacity in beams. However, the actual cap...

z Bu çalışmada, 2019 yılında yürürlüğe giren Türkiye Bina Deprem Yönetmeliği (TBDY-2019) ile 2007 Türk Deprem Yönetmeliğinin (TDY-2007) deprem hesap yöntemleri açısından karşılaştırılmasına odaklanılmıştır. Bunun için aynı plan özelliklerine sahip 3-4-5 katlı çerçeve + perde türü betonarme binalar üzerinde ETABS programında lineer elastik analizler...

The construction sector in Turkey has met concrete prefabrication at the end of the 1960s. Prefabricated structures have been preferred more especially in industrial buildings due to their rapid production and fast erecting. The biggest disadvantage of these structures is the damages that occurred at especially the region of hinged connection. The...

Due to the heavy and dynamic equipment, the vibration and resonance effects that are not encountered under static dead loading may amplify over time in industrial buildings. This might cause damage to the structural system and create human comfort problems while the structure is in service. In this study, ambient vibration testing of a building com...

Dapped-end beams (DEBs), also known as thinned end beams, are often experienced in shear damages under the effect of vertical loads. Especially if the necessary precautions for thinned ends of reinforced concrete prefabricated purlins on the roofs having standard cross sections are not considered during the design, these purlins can be failed sudde...

Dapped end prefabricated concrete purlins (PCPs) suffer from shear damages due to coating, snow, wind load and also their dead loads. In this present study, a series of numerical modelling is performed with the aid of finite element program ABAQUS in order to investigate this behavior of PCPs through parametric study. In addition to the mechanical...

In this study, firstly, visual screening based (VSB) (FEMA 154, RVS and RBTE) and capacity-based (P25, Yakut, AURAP and DURTES) methods which are rapid seismic safety assessment methods of existing buildings have discussed. In addition, the linear and nonlinear earthquake performance procedures of the reinforced concrete structures according to the...

Carbon fiber reinforced polymer (CFRP) composite strips are often preferred, especially in order to strengthen reinforced concrete structural elements which have insufficient shear and ductility capacity. The amount of composite material used is extremely important in terms of behavior. There are various mechanical equations for the contribution of...

Doctrines of earthquakes and also the latest approaches of earthquake resistant building design in standards need to be revised periodically. While the revisions and updates in the American standards occur over periods of three or five years including limited subjects, in Turkey the same revisions are done once over long periods including the whole...

In prefabricated industrial buildings, damages and collapses may occur under snow loads. If the necessary precautions are not taken, the damage can spread to the whole structure which leads to total collapse. Therefore, it is very crucial for manufacturers to comprehend the nature of the damage and to take necessary precautions to prevent this dama...

In this study, two methods of CFRP applications were utilized to strengthen the shear deficient beams with circular holes and a comprehensive experimental program consisting of 11 ½ scaled specimens was undertaken. The beams with hole diameter (D) / beam height ratio (H) of 0.30, 0.44, 0.64 ratios, symmetrically drilled in shear span were tested un...

In this study, a method that is fast, economical and satisfying in terms of accuracy rate has been developed in order to determine the post-earthquake damage level of reinforced concrete column elements dependent on the damage image on the column surface. In order to represent the Turkish building stock, reinforced concrete columns were produced co...

Reinforced concrete walls are very efficient structural elements in terms of carrying the lateral loads that are expected to affect the structures during the service of the buildings. These elements, which are not used for economic reasons in buildings designed in areas with low seismic hazard, can actually provide a significant increase in perform...

This paper was written to investigate the changes obtained as a result of the change on the response modification factor (R) value and plastic hinge length that differed during the analyzing process of reinforced concrete structures under nonlinear effects. The analysis studies were carried out by adhering to the conditions and calculation methods...

In this study, to observe the behavior of chemical anchors embedded in concrete under the tensile effect, 108 different anchor specimens were prepared with different parameters as concrete compressive strength, reinforcement bar diameters, anchor depths, sizes of drilled holes, cleanliness of the drilled holes. Pull-out tests were conducted and obt...

Betonarme yapıların hesap ve tasarımına yönelik TBDY-2019 yönetmeliği ile kapsamlı değişiklikler yapılmıştır. 2019 Ocak ayında yürürlüğe giren yeni deprem yönetmeliği ile beraber artık yeni yapılacak yapıların tasarımlarında bu yönetmeliğin kullanımı zorunlu hale getirilmiştir. Yeni yönetmelikle beraber yapılan değişiklerden biri de yapıların doğal...

Deprem sırasında bir binanın yaşayabileceği en kötü tecrübe kesme hasarı ile ani güç tükünmesi sonucu yıkılmasıdır. Kesme hasarı kesme kapasitesinin yetersiz olduğu kiriş, kolon ve perdelerde deprem sırasında ortaya çıkmaktadır. Türkiye'de kesme kapasitesi yetersiz kirişlerin bulunduğu çok sayıda betonarme bina mevcuttur. Bu binaların incelenmesi d...

zet Günümüzde inşaat sektöründe geleneksel onarım/güçlendirme (O/G) malzemeleri dışındaki malzeme kullanımı gündeme gelmektedir. Bu malzemeler içerisinde çekme dayanımı çelik elemanlara göre 10 ila 14 kat daha fazla olan CFRP malzemeler tercihen ilk sırayı oluşturmaktadır. Bu malzemelerin dayanıklı oluşu ve yapının ağırlığını artırmadan işlevinin e...

zet Betonarme kirişlerin kesme dayanımı kesme donatısı olan etriyeler ile sağlanır. Kesme dayanımı yetersiz kiriş elemanların kapasitelerini artırmak için farklı güçlendirme teknikleri uygulanmaktadır. Yapılan güçlendirmeler ilgili kesite dıştan etriye ilavesi şeklinde olup kesiti artırmaya yönelik yapılmaktadır. Ancak bu durumda yapının ağırlığı v...

Bu çalışmada ön hasarlı betonarme eğilme kirişlerinin çelik plakalar ile güçlendirilmesi araştırılmıştır. Bunun için boyutları 12.5x25x250 cm olan dikdörtgen kesitli 4 adet kiriş üretilmiştir. Kirişlerin kapasitelerine eğilmeden ulaşabilmeleri için tasarımda seçilen etriye Ф5/10cm ve boyuna donatı oranı denge altı sünek davranış oluşması adına 0.01...

Kesme donatısı yetersiz betonarme kirişlerin deprem gibi dinamik yükler altında ani ve gevrek olarak göçtükleri bilinmektedir. Betonarme yapıların tasarım felsefesinde sünek davranış esas alındığından bu tarz kırılma durumları istenmemektedir. Ancak uygulamadaki mevcut yapılar değerlendirildiğinde kesme donatısı yetersiz birçok elemanın olması bu e...

Nowadays, the use of prefabricated buildings has increased considerably since it is practical, easy to manufacture and can be assembled quickly on site. Prefabricated structures can be manufactured with or without pretension. In these structures, cross-sectional dimensions of some elements can be reduced according to the place of use. Such cross-se...

CFRP material, known as carbon fiber materials, is the focal point of this study among the different reinforcement alternatives for the thinned end regions of prefabricated structures. CFRP material has been preferred due to its high tensile strength to weight ratio. In the strengthening of the thinned region, it is important to strengthen not only...

Prefabricated structures supported with purlins are exposed to numerous damages due to the excessive snow loadings as vertical loadings. The thinned regions of the purlins are responsible with the failure of the structure since the shear cracks usually initiate at these regions and propagate along with the purlins, and as a result, a total collapse...

zet Betonarme yapıların güçlendirilmesinde, mevcut taşıyıcı sistem elemanlarının boyutlarının artırılması veya yeni taşıyıcı elaman ilave edilmesi en yaygın yöntemlerden biridir. Betonarme kirişlerin güçlendirilmesine yönelik çalışmalara bakıldığında çelik plakalar ve kompozit malzemelerin kullanılması da uzun yıllar kullanılan ve halen de yoğun ta...

zet Bu çalışma, karbon fiber (CFRP), çelik plaka ve mekanik bağlayıcılar ile güçlendirilmesi planlanan betonarme kirişlerin eğilme etkisi altındaki davranışlarını karşılaştırmalı olarak incelemek için yapılmıştır. Yapılan çalışmada güçlendirme öncesi kirişlere uygulanan ön hasar kısmı ele alınmıştır. Çalışmada bir adet referans ve üç farklı hasar s...

Deprem etkisi altında bir yapının göstereceği davranış genel olarak yapının kütlesi ve yatay rijitliğine bağlıdır. Yapının dinamik karakterinin elbette sadece iki parametreye bağlı olmayacağı açıktır. Fakat diğer etmenlerle beraber periyod hesabın zorlaşması nedeniyle literatürde yaklaşık yöntemler verilmiştir. Bunlardan en çok kabul göreni ise Ray...

It is very common for the beams especially in basements and ground floors at reinforced concrete buildings to be drilled near the support due to ventilation and plumbing. What civil engineers wonder about is the changes in the load carrying capacity and mechanical behavior of the beams in case of opening of these holes. The motivation of this study...

Prefabrik sanayi yapılarında kullanılan İnceltilmiş uçlu öngermeli beton/betonarme kirişler kullanım yükleri altında eğilme etkisine maruz kalan elemanlardır. Ancak bazı durumlarda bu kirişler eğilme kapasitelerine ulaşmadan doğrudan kesmeye maruz kalarak göçmektedirler. Dolayısıyla inceltilmiş uç bölgesinde meydana gelen bu kesme hasarını önlemek...

Hibrid ve kompozit malzemelerin mühendislik yapılarının güçlendirilmesinde kullanımı son yıllarda hızla artmaktadır. Özellikle bu tarz malzemelerin kolay ve hızlı uygulanabilir olması, hafif ve yüksek çekme dayanımına sahip olması tercih edilmelerini sağlamaktadır. Ayrıca yüksek (rijitlik-dayanım)/(ağırlık) oranlarından dolayı güçlendirme amacıyla...

Prefabrike betonarme endüstri yapıları çoğunlukla sanayi amaçlı kullanılmaktadır. Bu yapıların büyük bir bölümü mafsal bağlantılı olduğundan elemanların düşey yükler altında tek tek incelenmesi analizi kolaylaştırmaktadır. Bu yapılar içerisinde bulunan inceltilmiş uçlu aşık kiriş elemanları kar gibi düşey yük etkisi altında üretilirken kesme hasarı...

Hibrid ve kompozit malzemelerin mühendislik yapılarının güçlendirilmesinde kullanımı son yıllarda hızla artmaktadır. Özellikle bu tarz malzemelerin kolay ve hızlı uygulanabilir olması, hafif ve yüksek çekme dayanımına sahip olması tercih edilmelerini sağlamaktadır. Ayrıca yüksek (rijitlik-dayanım)/(ağırlık) oranlarından dolayı güçlendirme amacıyla...

This paper describes numerical study of prefabricated purlins. Investigation of the effects of steel reinforcement quantities to behavior of prefabricated purlins was performed using numerical models. Prefabricated purlins are used in the roof of industrial buildings. These elements may be exposed to excessive snow loading which can cause damage to...

The use of composite materials for strengthening engineering structures has been increasing rapidly in recent years. These materials are preferred due to their high tensile strength compared to their weight. One of these materials is CFRP composite materials known as carbon fiber reinforced polymers. It is widely preferred composite material for re...

Prefabricated reinforced concrete is widely used in the industrial buildings. Structures with wide openings are exposed to damages due to snow loading. These damages are concentrated at the thinned end region of prefabricated purlins. TS9967 standard is used for designing of prefabricated structures. In this study, numerical models were developed t...

Cam lifi taze beton karışımına eklenerek betonun mekanik özellikleri iyileştirilmektedir. Literatürde cam lif takviyeli betonun (CTB) mekanik özelliklerinin tespitine yönelik çok sayıda araştırma yapılmıştır. Beton içine cam lifi eklenerek özellikle betonun eğilme ve çekme dayanımında hatırı sayılır artışlar meydana gelmekte, bu şekilde üretilmiş o...

The design of the buildings to the earthquakes is a very critical issue. Some of existing reinforced concrete buildings does not have sufficient performance in terms of earthquake. These buildings must be demolished or strengthened. Strengthening design is not a simple engineering account but requires deep knowledge of composite material behavior....

Reinfored concrete (RC) shear walls are element with significant lateral stiffness by their dimensions. In addition to the stiffness, the RC shear wall must to behavior as ductile as possible depending on the height / width ratio during the earthquake and it is requested to absorb the earthquake energy which must be receive by forming plastic defor...

Yapılara etkiyecek deprem yükleri statik ve dinamik analiz yöntemleri olmak üzere, iki farklı şekilde belirlenmektedir. Analizleri kolaylaştırmak amacıyla dinamik analiz yöntemleri yerine, statik bir analiz yöntemi olan spektral analiz yöntemi daha yaygın bir şekilde kullanılmaktadır. Burada daha gerçekçi ve karmaşık bir yöntem yerine daha sade ola...

Shear walled (SW) reinforced concrete (RC) buildings are considered to be a type of high seismic safety building. Although this structural system has an important seismic advantage, it also has some disadvantages, especially in acoustic and thermal comfort. In this study, experimental studies have been conducted on RC members produced with plastic...

Today, Artificial Neural Networks (ANN) and Image Processing (IP) are particularly used to solve engineering problems. This study uses ANN and IP together to determine the mechanical properties of concrete, such as the compressive strength, modulus of elasticity and maximum deformation, at a certain success rate. In other words, the primary objecti...

Most reinforced concrete buildings sustain significant damage or completely collapse after an earthquake due to structural irregularities. In this study, a set of investigations were conducted on the discontinuity of the vertical elements in building structures, a topic that to date has only been minimally explored. The investigation was carried...

Two different large-scale industrial structures that were destroyed by fires in 2011 and 2012 in Turkey were examined. The structural framework in the first structure was constructed as prefabricated concrete, while a prefabricated concrete–steel (hybrid) was the structural framework in the second. The post-fire performance of the structures was ev...

Applications of artificial intelligence in engineering disciplines have become widespread and have provided alternative solutions to engineering problems. Image processing technology (IPT) and artificial neural networks (ANNs) are types of artificial intelligence methods. However, IPT and ANN have been used together in extremely few studies. In thi...