عرض بسيط للتسجيلة

المؤلفTorisu, S.S.
المؤلفFaustin, N.E.
المؤلفElshafie, M.Z.E.B.
المؤلفBlack, M.
المؤلفSoga, K.
المؤلفMair, R.J.
تاريخ الإتاحة2024-08-05T07:19:21Z
تاريخ النشر2019
اسم المنشورInternational Conference on Smart Infrastructure and Construction 2019, ICSIC 2019: Driving Data-Informed Decision-Making
المصدرScopus
معرّف المصادر الموحدhttp://dx.doi.org/10.1680/icsic.64669.655
معرّف المصادر الموحدhttp://hdl.handle.net/10576/57449
الملخصField observations of infrastructure performance, during and following construction, are vital for efficient design of infrastructure in subsequent projects. Fibre optic sensing technology offers considerable benefits because it provides a continuous measurement profile along its length whereas conventional monitoring instrumentation, such as strain gauges, only offer discrete measurements. This paper describes two case studies in which fibre optic sensors were used to monitor the bending of heavily reinforced diaphragm walls installed during the construction of the Elizabeth Line (formerly called Crossrail), in London, UK. The first case study was a 30 m diameter, 44 m deep circular shaft constructed to launch the tunnel boring machines. The second case study was an almost rectangular ventilation and access shaft, 65 m in length, 16 m to 18 m wide and up to 36 m deep. The fibre optic sensing system was secured to the reinforcement cages of the diaphragm wall panels to measure mechanical and thermal strains during excavation. This allowed the effect of temperature changes to be accounted for. Field measurements were taken at regular intervals during excavation of both shafts. The two case study shafts, details of the fibre optic sensing system and some of the strain measurements are presented in this paper. The measurements demonstrate the effectiveness of fibre optics for structural monitoring of diaphragm wall shaft linings. They also confirm that fibre optic monitoring has an important role to play in performance-based design - in optimising and improving future designs.
راعي المشروعThe authors would like to thank the Innovate UK (formerly the Technology Strategy Board) and Crossrail Limited for funding this research. They also express gratitude to Crossrail Limited for permission to publish the field data and site photographs. The support of Carillion, Costain and Cementation Skanska is also gratefully acknowledged. In addition, special thanks are given to Dr Chang Ye Gue, Dr. Fei Wang, Koson Janmonta, Masanari Nakashima, Mohamad Alserdare, Peter Knott, Dr Phil Smith, Dr Tina Schwamb, Thomas Smith and Dr Yue Ouyang. This research would not have been possible without their help and support with the fieldwork.
اللغةen
الناشرICE Publishing
الموضوعBoring machines (machine tools)
Construction equipment
Decision making
Excavation
Fiber optics
Fibers
Strain
Strain measurement
Continuous measurements
Conventional monitoring
Diaphragm wall panels
Effect of temperature
Performance based design
Sensing technology
Structural monitoring
Tunnel boring machines
Reinforcement
العنوانMonitoring of shaft excavations in clay
النوعConference Paper
الصفحات655-664
dc.accessType Open Access


الملفات في هذه التسجيلة

Thumbnail

هذه التسجيلة تظهر في المجموعات التالية

عرض بسيط للتسجيلة