Geomechanik und Tunnelbau最新文献_第3页

Evolution of contractual challenges in mechanised tunnelling Entwicklung der bauvertraglichen Herausforderungen im maschinellen Tunnelbau 机械化隧道建设合同挑战的演变

Geomechanik und Tunnelbau Pub Date : 2025-02-21 DOI: 10.1002/geot.202400071

Dipl.-Ing. Dr. techn. Kurt Hechenblaickner, Dipl.-Ing. Hans Exenberger, Mathias Latzer

引用次数: 0

Deep foundation for high rise in tricky soil conditions and surroundings in Scandinavia – Walkthrough of various high-rise projects from initial geology to final execution and everything in between 在斯堪的纳维亚半岛棘手的土壤条件和周围环境中建立高层建筑的深层基础-从最初的地质到最终的执行以及其间的一切，各种高层项目的讲解

Geomechanik und Tunnelbau Pub Date : 2025-02-17 DOI: 10.1002/geot.202400073

Ronny Lajer, Tobias Klitgaard Person, Martin Strømgaard Hansen, Tine Dambo Nielsen

{"title":"Deep foundation for high rise in tricky soil conditions and surroundings in Scandinavia – Walkthrough of various high-rise projects from initial geology to final execution and everything in between","authors":"Ronny Lajer, Tobias Klitgaard Person, Martin Strømgaard Hansen, Tine Dambo Nielsen","doi":"10.1002/geot.202400073","DOIUrl":"https://doi.org/10.1002/geot.202400073","url":null,"abstract":"This report explores the challenges and innovative solutions associated with constructing deep foundations for high-rise buildings in Scandinavia. The focus is on three projects: Lighthouse and Mindet 6 in Aarhus, Denmark and Karlatornet in Gothenburg, Sweden. Each project faces complex geotechnical conditions, requiring advanced engineering techniques. The report highlights the importance of early involvement in project planning, allowing for tailored solutions to geotechnical challenges. Per Aarsleff A/S employed value engineering techniques to optimize designs, ensuring both cost-effectiveness and structural integrity. Test piles were crucial in validating foundation designs, offering real-time data for precise calibration. The report emphasizes the important collaborative approach between engineers, clients, and other stakeholders, leading to innovative design solutions and successful project execution. The strategic use of advanced machinery, such as Aarsleff's Bauer BG55 drilling rig, underscores the technical prowess required for these projects. The report showcases how complex soil conditions and engineering hurdles were overcome through meticulous planning, technology, and continuous collaboration, setting a standard for high-rise construction in challenging environments in Scandinavia.","PeriodicalId":39412,"journal":{"name":"Geomechanik und Tunnelbau","volume":"18 2","pages":"112-123"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Variant optimization for a green ammonia pipeline: Case study of Sauda/Norway 绿色氨管道的变型优化：以沙特/挪威为例

Geomechanik und Tunnelbau Pub Date : 2025-02-17 DOI: 10.1002/geot.202400076

Dr. techn. Georg H. Erharter, MSc. Eivind Stein, MSc. Ghostavo E. Halawy

{"title":"Variant optimization for a green ammonia pipeline: Case study of Sauda/Norway","authors":"Dr. techn. Georg H. Erharter, MSc. Eivind Stein, MSc. Ghostavo E. Halawy","doi":"10.1002/geot.202400076","DOIUrl":"https://doi.org/10.1002/geot.202400076","url":null,"abstract":"The transition to sustainable energy is crucial for addressing anthropogenic climate change, with green ammonia emerging as a key alternative to fossil fuels. Iverson eFuels AS is planning a green ammonia plant in Sauda, Norway, including a ca. 2800 m long pipeline tunnel to transport ammonia to a storage area at the fjord. This article elaborates on the early-phase variant optimization of the tunnel design, conducted at a pre-Front-End Engineering Design (pre-FEED) stage with limited ground data. Despite common concerns about time and effort, advanced 3D ground modeling and parametric modeling were employed due to the project‘s complex ground conditions and specific technical requirements. These digital tools enabled efficient and comprehensive design assessments, leading to a tunnel route that is optimized with respect to multiple different objectives. Furthermore, the advanced 3D modeling helped to heavily revise a more complicated previous longer pipeline tunnel that also included a valve pit. This case study highlights the benefits of using advanced modeling techniques early in the project lifecycle, demonstrating how they can enhance both the efficiency and quality of engineering solutions, even with limited initial data.","PeriodicalId":39412,"journal":{"name":"Geomechanik und Tunnelbau","volume":"18 2","pages":"139-145"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stockholm metro expansion 斯德哥尔摩地铁扩建

Geomechanik und Tunnelbau Pub Date : 2025-02-17 DOI: 10.1002/geot.202400072

Jekaterina Jonsson, Peter Leiner, Johanna Nilsson

{"title":"Stockholm metro expansion","authors":"Jekaterina Jonsson, Peter Leiner, Johanna Nilsson","doi":"10.1002/geot.202400072","DOIUrl":"https://doi.org/10.1002/geot.202400072","url":null,"abstract":"The article highlights the innovative engineering solutions for complex geological conditions within Stockholm's metro expansion project. Key technical methods included ground freezing in the Mårtensdal fault zone and the use of secant piles as deep retaining walls at Sofia station, set to become one of the world's deepest subway stations. For sub-sea tunnelling at Ladugårdslandsviken, the observational method was utilized to mitigate risks of tunnel collapse and uncontrolled water ingress. Lessons learned provide invaluable insights to navigate complex geological and logistical challenges and advance civil engineering practices. The ground freezing method is highly effective for stabilizing ground but requires meticulous design, precise casing alignment, and thorough monitoring to maintain optimal temperature levels. Early risk assessments and detailed site investigations, sampling, and lab testing are crucial for reliable modelling and predicting challenges. Use of secant piles in challenging soil conditions can be successful but demands careful logistical planning and consideration of space constraints. On-site adjustments, such as extending piles or modifying grouting techniques, may be necessary. Utilizing the observational method allows for real-time monitoring and adaptive measures which can prevent delays and maintain safety. Using technology like FME software for 3D modelling with aggregated production data greatly improves productivity and risk mitigation strategies.","PeriodicalId":39412,"journal":{"name":"Geomechanik und Tunnelbau","volume":"18 2","pages":"124-132"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Västlänken E02-Centralen – Large excavation pit in Gothenburg's soft clay retained by diaphragm walls Västlänken E02-Centralen -哥德堡软粘土中由连续墙保留的大型挖掘坑

Geomechanik und Tunnelbau Pub Date : 2025-02-17 DOI: 10.1002/geot.202400075

Dipl. Ing. Holger Sawitzki, Dipl. Ing. Olaf Bürger, Prof. Dr. Ing. Christian Scholz

{"title":"Västlänken E02-Centralen – Large excavation pit in Gothenburg's soft clay retained by diaphragm walls","authors":"Dipl. Ing. Holger Sawitzki, Dipl. Ing. Olaf Bürger, Prof. Dr. Ing. Christian Scholz","doi":"10.1002/geot.202400075","DOIUrl":"https://doi.org/10.1002/geot.202400075","url":null,"abstract":"Currently, comprehensive construction works are ongoing within the West Link Project in Gothenburg, whereby a railway tunnel is built below central Gothenburg, consisting of five construction lots including three underground stations. The purpose of the Centralen lot is to connect the commuter traffic to Nils Ericson terminal and to Gothenburg's Central Station by a new four-track underground station with two platforms. Designed as an underground structure, the new station was built by NCC Infrastructure (NCC) as a cut-and-cover tunnel. As the ground consists only of very soft clay down to great depth, the design and construction of the underground station was particularly challenging. Additionally, the complexity of the site conditions is enhanced by limited space, adjacent buildings and existing infrastructure crossing the site. Swedish Transport Administration, Trafikverket (TrV) decided for an early contractor involvement (ECI) contract to overcome the challenges of the Centralen lot. In the first phase, a multidisciplinary project team defined the construction methods, logistical constraints, general design and set a target price. Wayss & Freytag Ingenieurbau AG (W&F) was appointed as a subcontractor for heavy special foundation works. The team developed a solution using diaphragm walls (D-Walls) to create the excavation pit for the new station, which is up to 18 m deep and 50 m wide. S&C Consult GmbH (S&C) served as a consultant during the planning and construction phase and in the quality assurance of the D-Walls. It should be emphasised that this was only the fifth D-Wall project in Sweden. Thanks to the constructive and open cooperation of all parties, the work was successfully completed on schedule in July 2023.","PeriodicalId":39412,"journal":{"name":"Geomechanik und Tunnelbau","volume":"18 2","pages":"103-111"},"PeriodicalIF":0.0,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Melo dam drilled steel pile wall: Restraining seepage through earth dam 梅洛坝钻孔钢桩墙：抑制土坝渗水

Geomechanik und Tunnelbau Pub Date : 2025-02-17 DOI: 10.1002/geot.202400070

Samuli Kiuru

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Sustainability of traffic tunnels: status quo, measurability, and scope for action Taxonomie und Tunnelsanierung: Status quo, Messbarkeit und Handlungsspielräume 交通隧道的可持续性：现状、可测量性和行动范围分类与隧道管理：现状，Messbarkeit基金Handlungsspielräume

Geomechanik und Tunnelbau Pub Date : 2025-02-14 DOI: 10.1002/geot.202400079

Ing. Markus Auinger, Dipl.-Ing. Urs H. Grunicke, Dipl.-Ing. Dr. Karl Grossauer

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Imprint: Geomechanics and Tunnelling 1/2025 印记：地质力学与隧道1/2025

Geomechanik und Tunnelbau Pub Date : 2025-02-14 DOI: 10.1002/geot.202580197