کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
312151 534186 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A numerical model of fully grouted bolts considering the tri-linear shear bond–slip model
ترجمه فارسی عنوان
مدل عددی بولت کاملا بهم ریخته با توجه به مدل بسط مدل باند برشی سه خطه
کلمات کلیدی
مدل عددی، مدل لغزش باند سه گانه، تست کشش، مکانیسم جدا کردن، پیچ و مهره کاملا
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی


• A numerical model is proposed for fully grouted bolts.
• The model considers the tri-linear bond–slip relationship of a bolt system.
• The proposed model agrees well with the laboratory pullout data.

A numerical model of fully grouted bolts is proposed in this study by implementing the tri-linear bond–slip relationship of bolts into the numerical framework presented by Hyett et al. (1996). The bond–slip relationship of bolt–rock interface is simplified and represented by the tri-linear model. The proposed numerical model is characterized by (1) its ability in modeling decoupling mechanism of bolt–rock interface, i.e. the degradation of the interfacial shear bond stress along bolts; (2) its easy implementation in a numerical code. The proposed numerical model is verified with the pullout tests, and good agreements with the experimental results can be observed in terms of axial stress distributions in the bolt, shear stress distributions along the bolt and load–displacement relationship. The proposed model also gives a reasonable prediction on the behavior of bolts installed in the field.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tunnelling and Underground Space Technology - Volume 54, April 2016, Pages 73–80
نویسندگان
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