Passive and active control systems have been used in practical applications for new or existing structures. Active systems have generally better performance compared to passive ones, but the control... Show More

Passive and active control systems have been used in practical applications for new or existing structures. Active systems have generally better performance compared to passive ones, but the control force ad time-delay effects in the production of this control force are needed to be considered. In this study, passive tuned mass dampers (TMDs) and active tuned mass dampers (ATMDs) are compared for structures subjected to earthquake motions. For optimization of both systems, an improved harmony search algorithm is proposed. In the optimum design of ATMD, time-delay and control force limitation are considered. The comparison is presented for a 15-story reinforced concrete (RC) frame structure. According to the results, ATMD is effective than TMD in the reduction of structural displacement.

Building Information Modelling (BIM) can be considered as a design thinking tool in architecture besides its technical aspects. Many of the companies and countries commonly prefer using BIM in... Show More

Building Information Modelling (BIM) can be considered as a design thinking tool in architecture besides its technical aspects. Many of the companies and countries commonly prefer using BIM in projects. The development of BIM in the AEC industry points out its adoption in education. BIM in architectural design education has to be searched for the current state. This research investigates the determination of benefits and awareness of BIM in design courses and architectural education. The effects of associating BIM education with the design studio are observed through a case study. The development of design processes by using BIM tools is observed. The study helps to investigate the use and adoption of BIM in design education.

One of the most important tasks of structural engineers is the design of structural elements with appropriate cross-sections to ensure the balance of economy and safety in structural design. In this... Show More

One of the most important tasks of structural engineers is the design of structural elements with appropriate cross-sections to ensure the balance of economy and safety in structural design. In this context, different numerical algorithms are developed for the optimum design of structural systems. In this study, the optimum design of the roof structural model made of wood is done using teaching-learning based optimization (TLBO) in case of fire-free and fire according to Eurocode 5. The sections of the existing timber roof structure in the literature are calculated in case of fire-free and fire (30 and 60 minutes of fire). The necessity of the proposed method is emphasized by comparing the obtained optimum cross-sections in the case of fire-free with the values available in the literature. As a result, the optimum cross-section of timber roof structural elements and the wood type is determined in a short time for the different fire situations where the cross-section and characteristic features change with time.

Digital Twin (DT) is seen as the new shift paradigm for digital transformation in the post-pandemic-built environment sector. Learning from the implementation of Building Information Modelling (BIM)... Show More

Digital Twin (DT) is seen as the new shift paradigm for digital transformation in the post-pandemic-built environment sector. Learning from the implementation of Building Information Modelling (BIM) for Asset Management (AM), there are recurring themes that the interoperability challenge is the key barrier to firstly overcome. The absence of a critical overview of issues and research related to BIM-AM interoperability, is hindering the achievement of sustainable and effective integration between the two systems. Therefore, the aim of this paper is to review and analyse the trends and overview of the BIM-AM interoperability publications, identifies and classifies the major research topics on BIM-AM interoperability and finally, proposes future research interoperability directions for DT initiative adoption. To achieve the research aim, a systematic review of the work done to achieve interoperability using a wide range of digital technologies published between 2010 and 2020 related to the interoperability challenges between BIM, and AM and real-time data sources was conducted.

Adaptive reuse (AR) —the process of adapting existing buildings for new purposes can be an effective post-disaster strategy to shelter displaced people in densely built environments. As the... Show More

Adaptive reuse (AR) —the process of adapting existing buildings for new purposes can be an effective post-disaster strategy to shelter displaced people in densely built environments. As the literature documents no systematic tools to measure the suitability of existing buildings as collective shelters, this paper presents a multi-criteria shelter assessment tool (CS/ARP) for pre-disaster and rapid post-disaster uses. The study aims to discuss the CS/ARP methods’ potentials and provide evidence-based arguments for proactive disaster preparedness along with possible BIM and GIS connections. The proposed tool was tested through an in-depth case study involving the assessments of 3 school buildings in Istanbul. The assessments containing 119 categorized criteria under scorable assessment forms, facilitate the selection of the best building options among alternatives in a predetermined urban area. Decision-makers, designers and researchers may benefit from the proposed assessment approach with a specific focus on the temporary use of existing buildings with high digitalization potential.

The networked human moves across the city while consuming and reproducing representations of the places it encounters. This paper investigates how human engagement with the smartphone has created a... Show More

The networked human moves across the city while consuming and reproducing representations of the places it encounters. This paper investigates how human engagement with the smartphone has created a shift in perception and embodiment that affects the relationship between the moving body and the city through rituals performed in everyday life. The smartphone becomes a pivotal point between the physical and virtual worlds, allowing the user to access and interfere with physical and virtual layers of space, continually transforming how the public understands the city. This paper uses media studies theory to read how the smartphone operates as an always-available extension of the body that functions as a screen, a camera, a map, and a small computer. In a new, data-enhanced world that has emerged, storytelling and the circulation of representations of the surrounding space affect the experience of the city. This paper explores how informational flows create new topologies, new embodied experiences, and new futures for cities.

Existing buildings are seen as a potential field where effective carbon-saving and energy-efficiency strategies can be applied. Their lifetime and performance can be increased by implementing... Show More

Existing buildings are seen as a potential field where effective carbon-saving and energy-efficiency strategies can be applied. Their lifetime and performance can be increased by implementing different retrofit measures. The retrofit processes remain a complex task that necessitates long-term planning and costly operations and requires a consensus of their stakeholders to identify an ultimate solution from many alternatives. This paper demonstrates a simulation-based exploratory approach, allowing a broader consideration of alternative retrofit solutions to increase non-technical and technical stakeholders’ involvement over design decisions. A hypothetical office building was selected, and a list of retrofit parameters and their combinations focusing on multiple objectives was determined, modeled, simulated, and visualized. Three different decision-making approaches are presented and discussed over the case study results. The study suggests that giving a voice to all stakeholders in decision-making processes might lead to achieving more robust retrofit solutions.

The early architectural design involves the most salient decisions. However, because of the large amount of variance, the decision-making is highly arduous. This article presents a methodology to... Show More

The early architectural design involves the most salient decisions. However, because of the large amount of variance, the decision-making is highly arduous. This article presents a methodology to enable the most effective design variables to be selected within the most effective value range by presenting a method that allows the measurement of output uncertainty depending on the impact of design decisions on outputs. The methodology was tested with different building functions and climate regions using two-phase sensitivity analysis. The values of design variables were generated with quasi-random sampling. They were sorted with factor prioritization. Ineffective variables were eliminated with factor fixing. Advanced global sensitivity analyses were performed for the total effect. Factor mapping was applied with the output weighting. The results were presented with Parallel Coordinate Plot (PCP). The designers can make selections from alternatives with PCP. Finally, the study demonstrated how climate and building functions should be considered for building performance.

Reciprocal Frame (RF) is a three-dimensional grillage structure that consists of mutually supported elements. In RF, whatever the composition that is built, the geometry should always have two... Show More

Reciprocal Frame (RF) is a three-dimensional grillage structure that consists of mutually supported elements. In RF, whatever the composition that is built, the geometry should always have two members that are connected at a time. Moreover, at least three members should be connected to create a grid, but there is no limit for the maximum. In the research that has been done until today, the geometry of RF, form-finding issues, connections, structural behavior, fabrication methods were studied, but there is very limited number of studies about kinetic RF. In this study RF structures for single loop 3-, 4-, and 5-nexor configurations are analyzed in terms of their motion capabilities. The kinematic diagrams are drawn and their mobilities are calculated. Zero, single, and multi Degrees of Freedom (DoF) configurations are obtained. It has been found that the configurations with revolute joint series get minimum value and also it is not necessary to use as many joints as possible or joints with as many DoF as possible in the configuration to get maximum mobility value.

This article reports results of a study on reducing commute times in Istanbul, Turkey with special reference to university students. In order to reduce commute times in cities with high population... Show More

This article reports results of a study on reducing commute times in Istanbul, Turkey with special reference to university students. In order to reduce commute times in cities with high population density, this study proposes a mutual home exchange model for university students. The proposed model searches for suitable matches that can reduce commute times for residents in the case that they want to exchange their houses. A new matching algorithm has been designed in the context of this study. Agent-based approach has been preferred to define and solve home exchange problem and each home location is considered as an agent. Furthermore, two main one-sided matching algorithms, which are Irving’s Stable Roommate matching algorithm and Gale’s Top Trading Cycles matching algorithm, have been implemented for the home exchange problem. The proposed algorithm and two matching algorithms have been applied on a virtual data. The results of home exchange matching algorithms are presented.

Daylight affects our health and comfort. Recently, occupants face thermal and visual comfort problems due to the lack of solar control elements and improper design decisions of glazed surfaces.... Show More

Daylight affects our health and comfort. Recently, occupants face thermal and visual comfort problems due to the lack of solar control elements and improper design decisions of glazed surfaces. Recent studies show that solar control systems and window-based variables are some of the most significant variables which influence daylight performance. This study aims to test various combinations of window sizes and light shelf scenarios for a uniform distribution of daylight and visual comfort of occupants in two architecture studios in the İzmir Institute of Technology (IZTECH) Campus. In scenarios; window size and location, exterior and interior light shelves’ height, incline angle, and materials are tested. It is concluded that variables significantly improved the uniform distribution of daylight of both studios and sun patch areas of the south/east-oriented studio. Also, the artificial light requirement of the south/west-oriented studio is improved by 29.36% and 31.75% for the 21st of June and December respectively.

The concept of smart cities has become increasingly popular as a new urban planning perspective. However, different levels of accessibility to these new technologies due to socio-economic... Show More

The concept of smart cities has become increasingly popular as a new urban planning perspective. However, different levels of accessibility to these new technologies due to socio-economic disparities in the society proves this approach to be an important research subject for the urban planning of future cities. The main objective of this study is to evaluate smart-governance potential of residents who live in different urban areas and have different technological skills in order to participate in city planning equally. The main methodology of this study is to map and spatially analyse the use of online municipality services in urban areas with different socio-economic characteristics in İzmir/Bayraklı district. For this purpose, a spatial database via GIS was built including the location of residents who use the online ‘e-service’ section of the municipality’s official website and digital analysis maps was produced.

This research aims to understand the factors that contribute to the quality of life within isolated, confined, extreme (ICE) environments by investigating the architectural elements that affect an... Show More

This research aims to understand the factors that contribute to the quality of life within isolated, confined, extreme (ICE) environments by investigating the architectural elements that affect an individual’s spatial perception, their manifestation in ICE environments, and how spatial confinement and isolation contribute to changes in an individual’s perception of spaciousness. The researchers performed an in-depth examination on three different habitats, designed to simulate life in ICE environments, to identify which architectural elements were important contributors to positive and negative changes in spaciousness. For further explorations, fourteen design professionals were asked to evaluate these habitats using the Spaciousness and Crampedness Scale (SCS) and measuring the relative estimation in error of habitats’ areas. Afterward, the evaluations were compared with the examinations. The results indicate that the environment’s geometry, lighting, color, and texture significantly contribute to perceived spaciousness when evaluated through qualitative and quantitative methods.

Disasters affecting the whole world in different ways and degrees may happen at any time – even simultaneously – need to be reconsidered, especially so at the moment of writing (early in the 21st... Show More

Disasters affecting the whole world in different ways and degrees may happen at any time – even simultaneously – need to be reconsidered, especially so at the moment of writing (early in the 21st century) under the shadow of an ongoing pandemic. Earthquakes (occurring at a higher level now in Turkey) should be discussed within this pandemic context; preventative measures require to be put in place as well as disaster management plans. This paper focuses on temporary housing design: a crucial aspect in any anticipated extension of rehabilitation and reconstruction periods. It has taken the Marmara Earthquakes (1999) as a case study. Criteria are defined based on limiting the rate of infection and motivating people to stay indoors, and are weighted using a multi-criteria decision-making method called Analytic Hierarchy Process (AHP). The plans of the various house-types have been evaluated within this framework: the data developed is based on the temporary housing design and a correlation established between their ability to stand up to pandemic conditions and the sizes of the units.

The present paper proposes a reading through the techno-city visions as an attempt to jump into the timeline. The paper examines the experimental architectural works dreaming of the cities of the... Show More

The present paper proposes a reading through the techno-city visions as an attempt to jump into the timeline. The paper examines the experimental architectural works dreaming of the cities of the future in the context of being visionary. The paper interprets the techno-city design example sets within two headings: “Future city dreams” and “Future city dystopias”. The positive atmosphere of technological developments, covering the years the 1960s-1980s, creates future city dreams. Future city dystopias are visible in science fiction and architectural representations, especially after the 1990s, supported by computer technologies and increasing uncertainty. The techno-city visions discussed in the series, it is aimed to make visible the potential and expansions of the act of imagining and designing the future. Finally, it is aimed to put forward a discussion on the question of what the present "visions of city of the future" are. This text aims to understand the channels through which visionary techno-city projects are fed, their meanings, and the expansions they create.

Chinese cities, especially in the Pearl River Delta, have seen enormous development under globalization and the consequent ecological, socio-economic, and political changes. This 'high-speed... Show More

Chinese cities, especially in the Pearl River Delta, have seen enormous development under globalization and the consequent ecological, socio-economic, and political changes. This 'high-speed urbanization' results from various factors (e.g., reorganizing the administrative and institutional system and new modes of production, employment, and investment). These processes lead to transformations in the urban structures with massive growth and concentrations of population, infrastructure, and economic and political power. The complex relations and connections influence the spatial, social, and ecological development in the new-urban areas. Reflecting on the development outcomes in the PRD, this paper examines the possibilities for new strategic action in the economically important and developing Yangtze River Delta area. Based on outcomes from integrating industrial ecology into the planning of new urban developments, this paper argues that applying these ideas to Chinese urbanization could result in shared economic values and sustainable success.