کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
307201 513344 2014 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Understanding ground deformation mechanisms for multi-propped excavation in soft clay
ترجمه فارسی عنوان
درک مکانیزم های تغییر شکل زمین برای حفاری های چند ضلعی در خاک رس نرم
کلمات کلیدی
سانتریفیوژ، حفاری های چند جانبه، مکانیزم تغییر شکل طراحی قدرت قابل بسیج
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

Deep excavation works are carried out to construct underground infrastructures such as deep basements, subways, and service tunnels. The execution of these deep excavation works requires the use of retaining walls and bracing systems. Inadequate support systems have always been of major concern, as excessive ground movement induced during excavation could cause damage to neighboring structures, resulting in delays, disputes, and cost overruns. To gain a better understanding of the mechanisms involved in soil excavations, centrifuge model tests of deep excavations in slightly over-consolidated soft clay have been carried out using a newly developed testing system, in which the construction sequence of a multi-propped wall for deep excavations can be simulated in flight. Deformation mechanisms are observed using Particle Image Velocimetry. Settlements of the ground surface and changes in pore water pressure are monitored during the excavation. The effects of prop stiffness, wall rigidity, and excavation geometry on the characteristics of ground deformation and soil–structure interaction are demonstrated and discussed. The use of the conservation of energy within the framework of the mobilizable strength design in calculating ground movements is validated and shown to perform satisfactorily.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soils and Foundations - Volume 54, Issue 3, June 2014, Pages 296–312
نویسندگان
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