مورد إلكتروني
Settlement Behaviour of Heinenoord Tunnel: A Numerical Study
| العنوان: | Settlement Behaviour of Heinenoord Tunnel: A Numerical Study |
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| بيانات النشر: | 2022-08-30 |
| تفاصيل مُضافة: | Kwok, Matthew (author) |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The 1st Heinenoordtunnel is an immersed tube which has been open for service in the Netherlands since 1969. Over the past 50 years, a large and increasing settlement has been measured along the tunnel alignment. The greatest value of settlement (65 mm) occurs in tunnel element 1 from 1978 to 2018. The maximum differential settlement has reached 30 mm between element 1 and 2 which causes a potential threat to the tunnel serviceability. In addition, Distributed Optical Fiber Sensors (DOFS) was used to measure daily joint deformation of immersed tunnel. The result of DOFS has shown a periodic settlement under tide. The aim of this thesis is to investigate the long-term and daily settlement behavior of Heinenoordtunnel. The study starts with the geological information investigation, followed by settlement analysis using 2D Finite Element Modeling. Both long-term settlement and daily cyclic settlement are simulated and compared with the monitoring data. In long term settlement analysis, the results show that the consolidation settlement of tunnel element is trivial (<0.5mm) over the 50 years operation. The calculated result does not match with the monitoring data under a constant load assumption over the operational period. Therefore, three additional factors are considered which can be the possible causes of the excessive settlement. Those factors are the growth of traffic volume, fluvial deposition on riverbed and secondary compaction on the foundation. The main results are summarized as follows: (1) The settlement due to extreme traffic growth is between 10 and 20 mm which increases gradually from 1979 to 2018. (2) The fluvial deposition causes an average settlement of 1.68 mm over the past 40 years of operation. (3) The secondary compaction result is in between 5.30 and 10.70 mm, while the exact value depends on the selection of creep parameter. (4) The combined settlement is in between 18.27 and 30.62 mm that is significantly less than the 1st Heinenoord Tunnel Geo-Engineering |
| مصطلحات الفهرس: | PLAXIS 2D, Immersed Tunnel, Settlement Analysis, Distributed Optical Fiber Sensor, Geotechnical Engineering, Finite Element Modeling, Observational Method, Sensitivity Analysis, soil structure interaction, master thesis |
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| الإتاحة: | Open access content. Open access content © 2022 Matthew Kwok |
| ملاحظة: | English |
| أرقام أخرى: | NLTUD oai:tudelft.nl:uuid:b1f285dd-5bde-49b5-b8ca-6b2635ad859e 1344325716 |
| المصدر المساهم: | DELFT UNIV OF TECHNOL From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1344325716 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |