Tuluhan ERGİN - Academia.edu (original) (raw)

Papers by Tuluhan ERGİN

Research paper thumbnail of Strengthening of a Structural Beam with Carbon Fiber Material Applied with Polymeric Resin

Lecture notes in civil engineering, 2023

Research paper thumbnail of The axial behavior of the low and extremely low strength concrete confined with large-rupture-strain PET-FRPs made of production wastes

CRC Press eBooks, Aug 23, 2022

Research paper thumbnail of Binalarda çeşitli tehlikelerin yarattığı acil durumlar için eş zamanlı hasar tesbit, yerel tahliye, yönlendirme ve yönetim modeli

TÜBİTAK MAG01.09.2012Deprem, yangın ve patlama gibi ardışık tehlikelerin neden olduğu acil duru... more TÜBİTAK MAG01.09.2012Deprem, yangın ve patlama gibi ardışık tehlikelerin neden olduğu acil durumlar sırasında ve hemen sonrasında; farklı gruplar tarafından (örneğin ilk yardım ekipleri, acil durum müdahale ekipleri, bina sakinleri), binanın yapısı, hasara bağlı blokaj durumu, bina içeriği ve hassas bölgeler gibi bina içi ile ilgili çok çeşitli bilgilere ihtiyaç duyulmaktadır. Bu bilgilerin güvenilir olması ve bilgilere hızlı bir şekilde ulaşılabilmesi, afetler ve acil durumlar sonrasında oluşan ölüm, yaralanma ve hasarların azaltılmasında önemli bir rol oynamaktadır. Özellikle doğal afetler sonucu oluşan tehlikelerin %61’inin deprem kaynaklı olduğu Türkiye’de, bu tip bilgilere hızlı ve güvenilir bir şekilde ulaşmak daha da önem kazanmaktadır. Ayrıca, bir afet ya da acil durum sonrasında tetiklenebilecek ardışık tehlikelerin (deprem sonrası çıkan yangınlar, patlamalar) zararları da oldukça yıkıcı olabilmektedir. Zamanında ve etkin bir şekilde bina s...

Research paper thumbnail of Deprem sırasında bina yapılarında gerçek zamanlı algılayıcı tabanlı blokaj değerlendirme yöntemi

During and after earthquakes, occupants inside a damaged building should be evacuated rapidly and... more During and after earthquakes, occupants inside a damaged building should be evacuated rapidly and safely whereas related units outside the buildings (e.g. first responders) should know the current condition of the building. Obviously, this information should be as accurate as possible and accessed timely in order to speed up the evacuation. Unfortunately, absence of such information during evacuation and emergency response operations results in increased number of casualties. Hence, there arises a need for an approach to make rapid damage and blockage assessment in buildings possible. This study focuses on sensor-based, real-time blockage assessment of buildings during earthquakes and it is based on the idea that; the blocked units of a building (e.g. corridors) can be assessed with the help of different types of sensors. The number and locations of these sensors are arranged in such a way that it becomes possible to picture the current condition of the building. Sensors utilized in...

Research paper thumbnail of Application of a Local Monitoring and Condition Assessment Methodology to Building Structures

Various parties, such as first responders, emergency response teams, and occupants need a wide va... more Various parties, such as first responders, emergency response teams, and occupants need a wide variety of internal information about facilities, such as building structure, in terms of damage condition, building content and vulnerable locations, during and right after a disaster. Accuracy and reliability of such information and making it available in a timely manner plays an important role in minimizing the number of casualties observed in the aftermath of disasters and emergencies. Within the context of this study, an integrated model, which has been developed to (1) perform rapid damage and condition assessment in a building structure under the thread of a disaster, (2) guide the occupants to shortest and safest evacuation paths and (3) assist the emergency response teams in rescue operations by pinpointing vulnerable locations where secondary disasters can be triggered, is considered to combine the information obtained from building information model and the sensors deployed inside the building. The integrated model is applied to an existing and large public (school) building with many hallways and exits, which is hypothetically hit by a major earthquake. The analytical model of the building is constructed and time history analyses are performed in order to estimate the condition of the building. Then this information is used by different sensors placed at specific locations within the building in order to determine the blocked or vulnerable locations and assist safe evacuation of the building.

Research paper thumbnail of Post-disaster sensor-based condition assessment of buildings to develop evacuation strategies

ABSTRACT This study focuses on sensor-based, real-time condition assessment of buildings during a... more ABSTRACT This study focuses on sensor-based, real-time condition assessment of buildings during and after multi-hazard emergencies and it is based on the idea that; the spatial distribution of damage in a building can be monitored by the help of different types of sensors. The number and locations of these sensors are arranged in such a way that it becomes possible to picture the current condition of the building. Sensors utilized in this study can be listed as accelerometer, ultrasonic range finder, gyroscope, closed cable circuit and video camera. The first step of the research is to decide on the number and location of different sensors that will be deployed inside the building. The next step is to correlate the readings of each type of sensor with the observed damage caused by the disaster. This is achieved by conducting real-time experiments on a scaled corridor model, equipped with sensors. Finally, sensor fusion is carried out, and obtained sensor readings are gathered to provide overall information about the current condition of the building. A decision tree approach is developed, which predicts the penalty scores for blockage in certain regions of the building. By conducting experiments, the developed decision tree approach is validated. Consequently, it is concluded that the obtained information can be used as an input for shortest path algorithms that calculate safe and rapid evacuation paths for the victims in damaged buildings.

Research paper thumbnail of Blockage assessment of buildings during emergency using multiple types of sensors

Automation in Construction, 2015

In case of an emergency in a building, first responders need to know current blockages in the bui... more In case of an emergency in a building, first responders need to know current blockages in the building (e.g., blocked passageways and exits) and safe evacuating paths so that the occupants can be guided to the unblocked exits and safe paths toward those exits. To automatically determine blockage levels at buildings, a system that fuses data from multiple sensors and video camera was proposed. A prototype was developed and tested on an experimental model of a pilot building's hallway. A series of damage tests were conducted on the hallway model and recorded by the sensors and the video camera. Individual performances of sensors and video camera were evaluated, and a decision tree method was used to fuse sensor and video camera data for estimating the level of blockage in the hallway for different damage combinations applied on building components. The results demonstrated the technical feasibility of the proposed system and the findings of the decision tree highlight that by using less number of sensors, a cost-effective configuration can be achieved. The estimated blockage information can be used to create a topological map of the damaged building, indicating safe paths toward available unblocked exits.

Research paper thumbnail of Strengthening of a Structural Beam with Carbon Fiber Material Applied with Polymeric Resin

Lecture notes in civil engineering, 2023

Research paper thumbnail of The axial behavior of the low and extremely low strength concrete confined with large-rupture-strain PET-FRPs made of production wastes

CRC Press eBooks, Aug 23, 2022

Research paper thumbnail of Binalarda çeşitli tehlikelerin yarattığı acil durumlar için eş zamanlı hasar tesbit, yerel tahliye, yönlendirme ve yönetim modeli

TÜBİTAK MAG01.09.2012Deprem, yangın ve patlama gibi ardışık tehlikelerin neden olduğu acil duru... more TÜBİTAK MAG01.09.2012Deprem, yangın ve patlama gibi ardışık tehlikelerin neden olduğu acil durumlar sırasında ve hemen sonrasında; farklı gruplar tarafından (örneğin ilk yardım ekipleri, acil durum müdahale ekipleri, bina sakinleri), binanın yapısı, hasara bağlı blokaj durumu, bina içeriği ve hassas bölgeler gibi bina içi ile ilgili çok çeşitli bilgilere ihtiyaç duyulmaktadır. Bu bilgilerin güvenilir olması ve bilgilere hızlı bir şekilde ulaşılabilmesi, afetler ve acil durumlar sonrasında oluşan ölüm, yaralanma ve hasarların azaltılmasında önemli bir rol oynamaktadır. Özellikle doğal afetler sonucu oluşan tehlikelerin %61’inin deprem kaynaklı olduğu Türkiye’de, bu tip bilgilere hızlı ve güvenilir bir şekilde ulaşmak daha da önem kazanmaktadır. Ayrıca, bir afet ya da acil durum sonrasında tetiklenebilecek ardışık tehlikelerin (deprem sonrası çıkan yangınlar, patlamalar) zararları da oldukça yıkıcı olabilmektedir. Zamanında ve etkin bir şekilde bina s...

Research paper thumbnail of Deprem sırasında bina yapılarında gerçek zamanlı algılayıcı tabanlı blokaj değerlendirme yöntemi

During and after earthquakes, occupants inside a damaged building should be evacuated rapidly and... more During and after earthquakes, occupants inside a damaged building should be evacuated rapidly and safely whereas related units outside the buildings (e.g. first responders) should know the current condition of the building. Obviously, this information should be as accurate as possible and accessed timely in order to speed up the evacuation. Unfortunately, absence of such information during evacuation and emergency response operations results in increased number of casualties. Hence, there arises a need for an approach to make rapid damage and blockage assessment in buildings possible. This study focuses on sensor-based, real-time blockage assessment of buildings during earthquakes and it is based on the idea that; the blocked units of a building (e.g. corridors) can be assessed with the help of different types of sensors. The number and locations of these sensors are arranged in such a way that it becomes possible to picture the current condition of the building. Sensors utilized in...

Research paper thumbnail of Application of a Local Monitoring and Condition Assessment Methodology to Building Structures

Various parties, such as first responders, emergency response teams, and occupants need a wide va... more Various parties, such as first responders, emergency response teams, and occupants need a wide variety of internal information about facilities, such as building structure, in terms of damage condition, building content and vulnerable locations, during and right after a disaster. Accuracy and reliability of such information and making it available in a timely manner plays an important role in minimizing the number of casualties observed in the aftermath of disasters and emergencies. Within the context of this study, an integrated model, which has been developed to (1) perform rapid damage and condition assessment in a building structure under the thread of a disaster, (2) guide the occupants to shortest and safest evacuation paths and (3) assist the emergency response teams in rescue operations by pinpointing vulnerable locations where secondary disasters can be triggered, is considered to combine the information obtained from building information model and the sensors deployed inside the building. The integrated model is applied to an existing and large public (school) building with many hallways and exits, which is hypothetically hit by a major earthquake. The analytical model of the building is constructed and time history analyses are performed in order to estimate the condition of the building. Then this information is used by different sensors placed at specific locations within the building in order to determine the blocked or vulnerable locations and assist safe evacuation of the building.

Research paper thumbnail of Post-disaster sensor-based condition assessment of buildings to develop evacuation strategies

ABSTRACT This study focuses on sensor-based, real-time condition assessment of buildings during a... more ABSTRACT This study focuses on sensor-based, real-time condition assessment of buildings during and after multi-hazard emergencies and it is based on the idea that; the spatial distribution of damage in a building can be monitored by the help of different types of sensors. The number and locations of these sensors are arranged in such a way that it becomes possible to picture the current condition of the building. Sensors utilized in this study can be listed as accelerometer, ultrasonic range finder, gyroscope, closed cable circuit and video camera. The first step of the research is to decide on the number and location of different sensors that will be deployed inside the building. The next step is to correlate the readings of each type of sensor with the observed damage caused by the disaster. This is achieved by conducting real-time experiments on a scaled corridor model, equipped with sensors. Finally, sensor fusion is carried out, and obtained sensor readings are gathered to provide overall information about the current condition of the building. A decision tree approach is developed, which predicts the penalty scores for blockage in certain regions of the building. By conducting experiments, the developed decision tree approach is validated. Consequently, it is concluded that the obtained information can be used as an input for shortest path algorithms that calculate safe and rapid evacuation paths for the victims in damaged buildings.

Research paper thumbnail of Blockage assessment of buildings during emergency using multiple types of sensors

Automation in Construction, 2015

In case of an emergency in a building, first responders need to know current blockages in the bui... more In case of an emergency in a building, first responders need to know current blockages in the building (e.g., blocked passageways and exits) and safe evacuating paths so that the occupants can be guided to the unblocked exits and safe paths toward those exits. To automatically determine blockage levels at buildings, a system that fuses data from multiple sensors and video camera was proposed. A prototype was developed and tested on an experimental model of a pilot building's hallway. A series of damage tests were conducted on the hallway model and recorded by the sensors and the video camera. Individual performances of sensors and video camera were evaluated, and a decision tree method was used to fuse sensor and video camera data for estimating the level of blockage in the hallway for different damage combinations applied on building components. The results demonstrated the technical feasibility of the proposed system and the findings of the decision tree highlight that by using less number of sensors, a cost-effective configuration can be achieved. The estimated blockage information can be used to create a topological map of the damaged building, indicating safe paths toward available unblocked exits.