| 1. |
- Cusumano, Linda, 1981, et al.
(författare)
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Intelligent building contract tendering - potential and exploration
- 2022
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Ingår i: IABSE Symposium Prague, 2022: Challenges for Existing and Oncoming Structures - Report. - Zurich, Switzerland : International Association for Bridge and Structural Engineering (IABSE). ; , s. 1902-1909
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Konferensbidrag (refereegranskat)abstract
- Project tendering is the construction business “Tightrope-walking.” It is a time-limited balance act where technical and business specialists find the best technical proposal at the right price. The purpose and aim of this study were to explore artificial intelligence (AI) in the tender work and to identify challenges and possibilities with data-driven decision-making. An AI work support tool was adopted and used to extract and process client requirements. The tool and digital-work procedure were presented and discussed with tender specialists from a large contractor in a workshop. A two-step survey was performed in connection to the workshop, investigating the potential users' insights and attitudes for implementation. The main result and conclusion were that AI and digitalization could support tendering; however, successfully generating business value will require higher levels of digitalization, well-structured databases, and access to historical project data.
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| 2. |
- Cusumano, Linda, 1981, et al.
(författare)
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Natural language processing as work support in project tendering
- 2022
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Ingår i: Current Perspectives and New Directions in Mechanics, Modelling and Design of Structural Systems. - London : CRC Press. - 9781003348443 ; , s. 1583-1588
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Konferensbidrag (refereegranskat)abstract
- When producing a tender, contractors manually analyze client requirements contained within many different text documents. The combination of requirements lead to crucial design decisions and every decision is related to costs and risks. This study explores the possibility of making the client requirement analysis in design-bid contracts automated to reduce the risk of conceptual design mistakes. The research approach chosen includes developing a work support tool based on natural language processing and analyzing its usefulness through a combination of surveys and a workshop for tendering specialist. The results show that applying digitalized working methods and using artificial intelligence in the tender phase can enable data-informed decision making and generate benchmarking and risk management opportunities. The study contributes to insights regarding automation and digitization possibilities in tender projects and how artificial intelligence tools can be designed for supporting data-driven decisions.
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| 3. |
- Goto, Yutaka, 1984, et al.
(författare)
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Legislative background of timber structures in Europe and Japan - Case study in structural design of light-frame timber structure
- 2021
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Ingår i: World Conference on Timber Engineering 2021, WCTE 2021.
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Konferensbidrag (refereegranskat)abstract
- Standards and design codes are necessary to guarantee the desired safety and performance of structures. With regard to timber structures, considerable differences exist in the standards and design codes between Europe and Japan. In this contribution the framework of design codes for timber structure in Europe and Japan is compared. The fundamental approach in the structural planning, application of load and associated fire regulation is explained. Furthermore, a case study of the structural design of a 3-storey residential building with light-frame timber structure is performed to highlight the differences in the structural calculation and design approaches in construction details. Finally, potential optimization of different standards is suggested.
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| 4. |
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| 5. |
- Jockwer, Robert, 1984, et al.
(författare)
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Design for adaption - Making timber buildings ready for circular use and extended service life
- 2020
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Ingår i: IOP Conference Series: Earth and Environmental Science. - : IOP Publishing. - 1755-1307 .- 1755-1315. ; 588:5
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Konferensbidrag (refereegranskat)abstract
- The construction sector has a significant share of Green House Gas emission and raw material consumption globally. Among common construction materials, timber has a long tradition of numerous applications as a renewable material. The implementation of the concept of circularity in the process of the construction of timber buildings has a high potential sustainability impact. The concept of design for adaption is to extend the service life of timber building to the maximum in several life cycles. In this paper the demand regarding circularity is analysed from interviews with different stakeholders and their economic, social and environmental incentive. The possibility to assess the sustainability impact of design for adaption are evaluated. Different examples of existing practices and potential solutions for design for deconstruction and adaption are summarized.
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| 6. |
- Jockwer, Robert, 1984, et al.
(författare)
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Design for adaption - making timber buildings ready for circular use and extended service life
- 2021
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Ingår i: World Conference on Timber Engineering 2021, WCTE 2021.
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Konferensbidrag (refereegranskat)abstract
- The use of timber and the implementation of the concept of circularity in the process of the construction of buildings potentially has a high sustainability impact, both from the perspective of material and construction technique. The three most effective ways to ensure the benefit of the circularity in the building sector in general are (1) maintain the service life of structures and buildings materials as long as possible to avoid unnecessary emissions and costs for demolition and reconstruction (2) conserve the quality of materials as long as possible to avoid unnecessary emissions and costs for the replacement and processing of new materials and (3) recycle and repurpose only the parts and materials which cannot function any more for technical and/or socio-cultural reasons. In this paper an approach is discussed towards a more sustainable built environment by making buildings adaptable to the changes of demands and requirements to building functions and thus leading to an extended use of buildings in a maximum of life cycles. This design for adaption may enhance economic, social and environmental benefits to various stakeholders and key players related to the building process, i.e. developers, building owners, users, municipality and others.
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| 7. |
- Jockwer, Robert, 1984, et al.
(författare)
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TOWARDS ADAPTABILITY AND CIRCULARITY OF TIMBER BUILDINGS
- 2023
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Ingår i: 13th World Conference on Timber Engineering, WCTE 2023. ; 3, s. 1497-1505
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Konferensbidrag (refereegranskat)abstract
- The construction industry has been a major contributor to resource consumption and global greenhouse gas (GHG) emissions, owed to high demand for building construction and the rapid urbanization trend. Timber construction has gained traction globally due to environmental advantages, such as renewability and carbon sequestration. However, sustainably available wood resources are limited. Extension of service life of timber structures is key to prolong their carbon stock. This paper showcases research projects carried out in Australia and Sweden that aim to design adaptable timber buildings capable of accommodating functional and spatial changes over time, thereby extending the service life of buildings and their components, as well as optimising their life cycles through spatial variations and repair of local damages to structural elements. This approach, known as Design for Adaptation (DfA) is an important step of the roadmap towards circular design solutions for timber buildings, which provide many economic, social and environmental benefits to all stakeholders and key players related to the building process, including manufacturers, engineers, architects, end-users, municipalities, and others.
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| 8. |
- Schober, Kay-Uwe, et al.
(författare)
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FRP reinforcement of timber structures
- 2015
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Ingår i: Construction and Building Materials. - : Elsevier BV. - 0950-0618. ; 97, s. 106-118
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Tidskriftsartikel (refereegranskat)abstract
- Timber engineering has advanced over recent decades to offer an alternative to traditional materials andmethods. The bonding of fibre reinforced plastics (FRP) with adhesives to timber structures for repair andstrengthening has many advantages. However, the lack of established design rules has strongly restrainedthe use of FRP strengthening in many situations, where these could be a preferable option to most traditionaltechniques. A significant body of research has been carried out in recent years on the performanceof FRP reinforced timber and engineered wood products. This paper gives a State of the Art summary ofmaterial formulations, application areas, design approaches and quality control issues for practical engineersto introduce on-site bonding of FRP to timber as a new way in design for structural repair andrehabilitation.
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| 9. |
- Bidakov, Andrii, et al.
(författare)
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Reinforcement of moment resisting joints in LVL frames
- 2021
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Ingår i: World Conference on Timber Engineering 2021, WCTE 2021.
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Konferensbidrag (refereegranskat)abstract
- This paper describes an experimental and numerical investigation of the reinforcement with self-tapping screws of moment-resisting joints in laminated veneer lumber (LVL) frame corners. The three portal frame corners were experimentally tested to determine the load-deformation behavior, load-carrying capacity and stiffness of the joints, and study the influence of the reinforcements. The laboratory investigations and obtained experimental data showed the efficiency of reinforcement dowel-type joints LVL elements by full-threaded screws. Numerical analyses followed laboratory tests. In this paper, preliminary results are shown and discussed.
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| 10. |
- Cabrero, Jose Manuel, et al.
(författare)
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A probabilistic study of brittle failure in dowel-type timber connections with steel plates loaded parallel to the grain
- 2019
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Ingår i: Wood Material Science and Engineering. - : Informa UK Limited. - 1748-0272 .- 1748-0280. ; 14:5, s. 298-311
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Tidskriftsartikel (refereegranskat)abstract
- Dowel-type connections in timber structures should be typically designed in a way that, if the load bearing capacity is exceeded, desirable ductile failure should likely occur, i.e. yielding of the metal dowel or embedment of the timber. However, the probability of brittle failures cannot be completely avoided in many cases. If the connection is loaded parallel to the grain direction, splitting, row-shear, plug/block shear and tensile failure are examples of such brittle failure modes. To ensure a beneficial structural performance locally and sufficient structural robustness globally, the probability of such brittle failures should be kept at a sufficiently low level. However, in the current version of EN1995, the probability of such failure is not considered explicitly. The final aim of the presented research study is to develop a rational approach for the consideration of brittle failure in timber connections with dowel-type fasteners and steel plates loaded parallel to the grain, consistently with the partial factor method. As a first step, a probabilistic model has been used to study the susceptibility to brittle failure and provide a rational basis for the calibration of a “brittle overstrength factor”. The results of this study are reported in the current contribution.
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