Bautechnik最新文献

{"title":"Ökobilanz in der Planung von Verkehrswasserbauwerken – Herausforderungen und Ansätze","authors":"Nancy Freitag,&nbsp;Dr.-Ing. Philipp Stein,&nbsp;Dr. rer. nat. Wolf Pfeiffer","doi":"10.1002/bate.70151","DOIUrl":"https://doi.org/10.1002/bate.70151","url":null,"abstract":"<p><b>Life cycle assessment in the design of waterway structures – Challenges and approaches</b></p><p>Life cycle assessment (LCA) is an established method for evaluating the sustainability of products or processes, in which associated emissions and resource consumptions are determined for a wide range of standardised indicators. However, in the context of construction projects and in view of current climate change trends, it is crucial to focus on the indicator for greenhouse gas potential (GHG emissions). LCA is already widely used in the evaluation of construction projects, particularly in building construction. However, this approach is not yet widely implemented in transport and water infrastructure systems. Given that the early planning phases of construction projects usually provide the greatest potential for influence, it appears particularly important to consider GHG emissions during the selection of design alternatives. For LCA of hydraulic engineering structures, including special civil engineering works required during construction, the available databases lack information on key building materials and construction processes. Furthermore, there is no standardised approach for defining the system boundaries and boundary conditions to be applied in the LCA of waterway structures. This paper highlights the approaches being used to address the existing challenges in order to develop practical tools for the LCA of waterway structures.</p>","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"623-628"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ökobilanzierung in der Planung","authors":"Prof. Dr.-Ing. habil. i. R. Thomas Lützkendorf","doi":"10.1002/bate.70150","DOIUrl":"https://doi.org/10.1002/bate.70150","url":null,"abstract":"<p><b>Life cycle assessment in the design stage – From a scientific approach to a practical tool</b></p><p>Requirements for the assessment and disclosure of environmentally relevant information on buildings using methods of applied life cycle assessment will become a legal requirement in the near future. Starting in 2028, greenhouse gas emissions in the life cycle must be calculated and reported as global warming potential. This is one of the impact categories included in the list of core indicators of a life cycle assessment. Whereas experience in determining the global warming potential and, in some cases, other potential environmental impacts has so far been limited to isolated applications, for example in sustainability assessment, applications for funding, or the EU taxonomy, design and construction practice, in particular the designers and engineers, will from then on be confronted with this topic. The groundwork is currently being laid. This applies to the formulation of legal requirements, the further development of the relevant standards, the provision of data, guidance, and tools, as well as the expansion of opportunities for further training. In this context, this paper presents the fundamentals of life cycle assessment, the current status of standardisation with regard to DIN EN 15978:2026 and DIN SPEC 91606:2026, as well as relevant questions that can be addressed by means of life cycle assessment. The background and interrelationships of selected subtopics are explained, and recommendations for real life application are provided.</p>","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"612-622"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aktuell: Bautechnik 8/2026","authors":"","doi":"10.1002/bate.70169","DOIUrl":"https://doi.org/10.1002/bate.70169","url":null,"abstract":"","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"655-658"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bate.70169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aktuell: Bautechnik 8/2026","authors":"","doi":"10.1002/bate.70169","DOIUrl":"https://doi.org/10.1002/bate.70169","url":null,"abstract":"","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"655-658"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bate.70169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vorschau: Bautechnik 8/2026","authors":"","doi":"10.1002/bate.70165","DOIUrl":"https://doi.org/10.1002/bate.70165","url":null,"abstract":"","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":""},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ökobilanzierung wird zum Planungswerkzeug","authors":"Dr. Bernhard Hauke","doi":"10.1002/bate.70161","DOIUrl":"https://doi.org/10.1002/bate.70161","url":null,"abstract":"&lt;p&gt;Die Baubranche steht vor einem grundlegenden Wandel. Während sich Anforderungen, Regelwerke und Planungsprozesse über Dekaden vor allem auf die Energieeffizienz im Betrieb von Gebäuden konzentrierten, rückt nun deren gesamter Lebenszyklus in den Fokus. Mit den ab 2028 geltenden europäischen Vorgaben zur Ermittlung und Offenlegung von Treibhausgasemissionen wird die Ökobilanzierung von einer Spezialdisziplin für Nachhaltigkeitsexperten zu einem festen Bestandteil der Planungspraxis.&lt;/p&gt;&lt;p&gt;Methoden der Ökobilanzierung werden seit Jahren in Nachhaltigkeitsbewertungssystemen, Förderprogrammen und Umweltproduktdeklarationen eingesetzt. In der Breite des Planungsalltags blieb ihre Anwendung jedoch bislang die Ausnahme. Planende werden künftig die Auswirkungen ihrer Entscheidungen auf Klima und Ressourcen systematisch erfassen, bewerten und dokumentieren müssen. Die Ökobilanzierung wird damit zu einem regulären Planungswerkzeug.&lt;/p&gt;&lt;p&gt;Darin liegt ihre Bedeutung für die Bautechnik. Die entscheidenden Hebel bei den Umweltwirkungen sind meist nicht auf der Baustelle, sondern bei der Planung. Die Wahl von Tragsystemen, Baustoffen, Konstruktionsweisen oder technischen Anlagen prägt die Umweltbilanz eines Gebäudes. Planungsentscheidungen sind damit immer auch Ressourcenentscheidungen. Die Ökobilanzierung macht diese Zusammenhänge sichtbar und ermöglicht belastbare Abwägungen.&lt;/p&gt;&lt;p&gt;Lange standen die Emissionen in der Nutzungsphase im Mittelpunkt. Heute wird zunehmend verstanden, dass auch Herstellung, Transport, Austausch und Instandhaltung von Bauprodukten erhebliche Umweltwirkungen verursachen. Die Verbesserung der Energieeffizienz bedingt oft einen größeren Materialeinsatz und damit höhere Emissionen in der Herstellungsphase. Erst die Betrachtung des gesamten Lebenszyklus macht solche Zielkonflikte sichtbar und verhindert die Verlagerung von Belastungen zwischen einzelnen Phasen.&lt;/p&gt;&lt;p&gt;Die aktuellen Entwicklungen in Normung und Gesetzgebung schaffen dafür die Rahmenbedingungen. Mit der überarbeiteten DIN EN 15978 und der ergänzenden DIN SPEC 91606 entstehen Regelwerke, die Bilanzierungsgrenzen, Datengrundlagen und Methoden präzisieren. Gleichzeitig verbessern neue europäische Anforderungen an Bauprodukte die Verfügbarkeit belastbarer Umweltinformationen.&lt;/p&gt;&lt;p&gt;Für die Praxis bedeutet dies jedoch weit mehr als zusätzliche Nachweispflichten. Die Ökobilanzierung unterstützt Variantenvergleiche, die Optimierung von Konstruktionen sowie die Bewertung kreislaufgerechter Lösungen. Die Wiederverwendung von Bauteilen, der Einsatz nachwachsender Rohstoffe oder die Auswahl emissionsarmer Produkte lassen sich bewerten.&lt;/p&gt;&lt;p&gt;Die Einführung verpflichtender Lebenszyklusbilanzen ist eine regulatorische Neuerung und ein kultureller Wandel im Planen und Bauen. Bauwerke werden künftig nicht allein an Funktion, Gestaltung, Terminen und Kosten gemessen, sondern ebenso an ihrem Beitrag zum Klima- und Ressourcenschutz. Wer die Umweltwirkungen eines Bauwerks kennt, kann sie g","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":""},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bate.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CO2-orientierter Gebäudebetrieb und Anforderungen an die Planung","authors":"Prof. Dr. Andrea Pelzeter,&nbsp;Dipl.-Ing. Nikolai Kononenko,&nbsp;Hendrik Turner (MA)","doi":"10.1002/bate.70160","DOIUrl":"https://doi.org/10.1002/bate.70160","url":null,"abstract":"<p><b>CO₂-oriented building operation and planning requirements</b></p><p>Climate-neutral building operation requires the systematic minimisation of operational energy and resource demand, as well as the coverage of the remaining needs from renewable energy sources. In this context, building-related facility services must be accounted for as part of usage-induced emissions. It is crucial that the prerequisites for low-emission operation are established as early as the planning and construction phases, since structural design specifications significantly determine future energy demand, system temperatures, controllability and ease of maintenance, and thus the emission pathways over the life cycle. Using a case-study building, the relationship between emissions from construction, use and facility management services is illustrated. Building on this, transformation scenarios are modelled as high-tech and low-tech strategies and compared with the baseline condition. The resulting metrics highlight trade-offs between construction-related and operational emissions.</p>","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"644-652"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Titelbild: Bautechnik 8/2026","authors":"","doi":"10.1002/bate.70166","DOIUrl":"https://doi.org/10.1002/bate.70166","url":null,"abstract":"","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":""},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bate.70166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ein Drittel der CO2-Emission bei innerstädtischer Baugrube eingespart","authors":"Dipl.-Ing. Konrad Westermann,&nbsp;Davide Tarchini M.Sc.,&nbsp;Dipl.-Ing. Laurent Pitteloud","doi":"10.1002/bate.70141","DOIUrl":"https://doi.org/10.1002/bate.70141","url":null,"abstract":"<p><b>A third of CO₂ emissions saved on an inner-city construction site</b></p><p>For the construction of a new research tower in Basel, a deep excavation pit was created in the middle of a pharmaceutical site. To secure the excavation pit against earth pressure and water pressure of up to ten metres in the highly permeable ground, an overlapping bored pile wall with a single intermediate support in the form of a strut slab was constructed. For this project, the aim was to optimise the project's environmental footprint during the planning, tendering and execution phases. To this end, the key factors influencing the carbon footprint of the building components were identified, and specific products and measures were specified in the tender to achieve a reduction in the carbon footprint. Despite adjustments made during construction, around a third of the CO₂ emissions from the excavation pit were ultimately saved.</p>","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":"635-643"},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Veranstaltungskalender: Bautechnik 8/2026","authors":"","doi":"10.1002/bate.70168","DOIUrl":"https://doi.org/10.1002/bate.70168","url":null,"abstract":"","PeriodicalId":55396,"journal":{"name":"Bautechnik","volume":"103 8","pages":""},"PeriodicalIF":0.6,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/bate.70168","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148662395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}