TY - JOUR T1 - Numerical Modeling of the Effects of Soil Reinforcement on Uplift Resistance of Buried Pipelines TT - مدل‌سازی عددی تأثیر تسلیح خاک بر مقاومت برخاست خطوط لوله مدفون JF - jeg JO - jeg VL - 11 IS - 4 UR - http://jeg.khu.ac.ir/article-1-2506-en.html Y1 - 2018 SP - 427 EP - 454 KW -  Uplift Resistance KW - Buried Pipelines KW - Numerical Modeling KW - Reinforced Sand KW - Geogrid KW - Grid-Anchor.  N2 - Introduction Recently, several studies on buried pipelines have been conducted to determine their uplift behavior as a function of burial depth, type of soil, and degree of compaction, using mathematical, numerical and experimental modeling. One of the geosynthetics applications is the construction of a reinforced soil foundation to increase the bearing capacity of shallow spread footings. Recently, a new reinforcement element to improve the bearing capacity of soils has been introduced and numerically studied by Hatef et al. The main idea behind the new system is adding anchors to ordinary geogrid. This system has been named as Grid-Anchor (it is not a trade name yet). In this system, a foundation that is supported by the soil reinforced with Grid-Anchor is used; the anchors are made from 10×10×10 mm cubic elements. The obtained results indicate that the Grid-Anchor system of reinforcing can increase the bearing capacity 2.74 times greater than that for ordinary geogrid and 4.43 times greater than for non-reinforced sand...../files/site1/files/0Extended_Abstract6.pdf M3 10.18869/acadpub.jeg.11.4.427 ER -