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مطالعه تاثیر اجرای پله بر پایداری دیوار حائل خاک مسلح در مقیاس آزمایشگاهی | ||
| نشریه مهندسی عمران امیرکبیر | ||
| مقاله 8، دوره 51، شماره 4، مهر و آبان 1398، صفحه 713-724 اصل مقاله (1.71 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/ceej.2018.13915.5509 | ||
| نویسندگان | ||
| عباس عابدی1؛ جهانگیر خزائی* 2؛ حسین مویدی3 | ||
| 1مهندسی عمران، دانشکده فنی و مهندسی، دانشگاه رازی، کرمانشاه، ایران | ||
| 2عضو هیات علمی دانشگاه رازی | ||
| 3گروه مهندسی عمران دانشکده فنی و مهندسی دانشگاه صنعتی، کرمانشاه، ایران | ||
| چکیده | ||
| اگر یک دیوار با ارتفاع بلند به چند دیوار با ارتفاع کوتاهتر تقسیم شود به آن دیوار پلهای( تراس بندی شده) اطلاق میشود. در دیوارهای خاک مسلح زمانی که اجرای دیوار با ارتفاع زیاد مورد نظر باشد به دلیل باال رفتن هزینه ها بحث اجرای دیوار پلهای میتواند مفید واقع شود. بدین منظور مدلسازی در مقیاس آزمایشگاهی بر روی دیوار خاک مسلح انجام شد تا عملکرد آنها در هندسههای مختلف مورد مطالعه و ارزیابی قرار گیرد. در این پژوهش تأثیر پارامترهای عرض پله (فاصله افقی پلهها) و تعداد پله ً ها بر عملکرد دیوار پلهای نسبت به دیوار قائم مورد بررسی قرار گرفته است. در این راستا جمعا 12 مدل دیوار در مقیاس آزمایشگاهی ساخته شد و عملکرد آنها تحت بارگذاری استاتیکی مورد ارزیابی قرار گرفت. نتایج نشان داد که در دیوار پلهای با افزایش عرض پله و افزایش تعداد پلهها تغییرشکلهای افقی رویه دیوار و نشست پی نواری مستقر بر خاک بالادست دیوار، نسبت به دیوار قائم کاهش و ظرفیت باربری پی نواری افزایش مییابد. با افزایش عرض پله، تغییر مکان افقی رویه دیوار به خصوص در قسمت بالایی دیوار به طور قابل توجهی کاهش مییابد؛ بهطوری که مناسبترین حالت برای اندرکنش دیوار بالایی و پایینی از لحاظ عملکرد در حالت خاص چهار لایه تسلیح و دیوار یک پلهای، برای شرایط نسبت عرض پله به ارتفاع دیوار برابر 0/35 میباشد. | ||
| کلیدواژهها | ||
| ژئوگرید؛ خاک مسلح؛ دیوارحائل پلهای؛ عرض پله؛ تعداد پله | ||
| موضوعات | ||
| خاک مسلح؛ دیوار های حائل صلب و انعطاف پذیر | ||
| عنوان مقاله [English] | ||
| Experimental Study on Performance of Multi-Tiered Reinforced Soil Retaining Walls | ||
| نویسندگان [English] | ||
| Abas Abedi1؛ Jahangir Khazaei2؛ hossein moayedi3 | ||
| 1Civil Engineering Department, Razi University, Kermanshah, Iran | ||
| 2civil engineering, razi university, kermanshah, iran | ||
| 3Civil Engineering Department, Kermanshah University of Technology | ||
| چکیده [English] | ||
| In reinforced soil walls, if the wall divided into several sections (here called tiers) it can be called multi-tiered reinforced soil retaining walls (MRSRW). These walls are considered to be a good solution especially if the wall’s height need to increase. The main objective of the study was finding the effects of tiers horizontal distance, offset distance between adjacent tiers and number of tiers on the lateral deflection of the wall facing as well as ultimate bearing capacities of a strip footing located at top of the wall. In this study, a small scale experimental programme on MRSRW were carried out where a total of 12 experiments were performed under static loading condition. The results showed that by increasing the tiers’ width and number of tiers in MRSRW, the horizontal deflection and settlement of footing on the crest of the wall was considerably reduced. Besides, when the tires’ width increased, the lateral deflection along the wall height was significantly reduced, especially at top of the wall. The result indicated that in order to attain the highest interaction between the top and bottom sections of the MRSRWs, having four reinforcement layers and one tier (with tier’s width/wall’s height ratio equal to 0.35) can provide the best result in regard to both lowest lateral deflection and highest bearing capacity of footing installed at top of the wall. | ||
| کلیدواژهها [English] | ||
| Geogrid, Reinforced soil, Retaining walls, Multi-tiered configuration, offset Distance | ||
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| مراجع | ||
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[1] M. Darbin, Reinforced Earth for Construction of Freeways, Revue Generale des Routes et Aerodromes, (1970). [2] J.E. Nicks, Case Study: Condition Assessment of a 36-Year-Old Mechanically Stabilized Earth Wall in Virginia, Journal of Geotechnical and Geoenvironmental Engineering, (2016) 143-145 [3] R.M. Koerner, Designing with geosynthetics, Xlibris Corporation, 2012. [4] N. Abu-Hejleh, T. Wang, J.G. Zornberg, Performance of geosynthetic-reinforced walls supporting the Founders/Meadows Bridge and approaching roadway structures, in: Geo-Denver, ASCE, Denver, Colorado, 2000. [5] M. Saghebfar, et al., Performance monitoring of Geosynthetic Reinforced Soil Integrated Bridge System (GRS-IBS) in Louisiana, Geotextiles and Geomembranes, 45(2) (2017) 34-47. [6] J.H. Huang, J. Parsons, R.L. Pierson, M., Refined numerical modeling of a laterally loaded drilled shaft in an MSE wall, Geotextiles and Geomembranes, 37 (2013) 61-73. [7] J.B.-S. Huang, S. Han, J. Rahman, M.S., Modeling of laterally loaded drilled shaft group in MSE wall, ICE Geotech. Eng. J., 167 (2014) 402-414. [8] K.Z. Lee, and Jonathan TH Wu., A synthesis of case histories on GRS bridge-supporting structures with flexible facing., Geotextiles and Geomembranes, 22(4) (2004) 181-204. [9] S.B. Mohamed, Kuo-Hsin Yang, and Wen-Yi Hung., Limit equilibrium analyses of geosynthetic-reinforced two-tiered walls: Calibration from centrifuge tests, Geotextiles and Geomembranes, 41 (2013) 1-16. [10] FHWA; Design and Construction of Mechanically Stabilized Earth Walls and Reinforced Soil Slopes, Department of Transportation Federal Highway Administration Publication, 2009. [11] H. Liu, G. Yang, H.I. Ling, Seismic response of multi- tiered reinforced soil retaining walls, Soil Dynamics and Earthquake Engineering, 61–62 (2014) 1-12. [12] N. Abu-Hejleh, T. Wang, J.G. Zornberg, Performance of geosynthetic-reinforced walls supporting the Founders/Meadows Bridge and approaching roadway structures, in: Geo-Denver, ASCE, Denver, Colorado, 2001. [13] A.W. Stuedlein, M. Bailey, D. Lindquist, J. Sankey, W.J. Neely, Design and Performance of a 46-m-High MSE Wall, Journal of Geotechnical and Geoenvironmental Engineering, 136(6) (2010) [14] D. Leshchinsky, and Jie Han., Geosynthetic reinforced multitiered walls, Journal of Geotechnical and Geoenvironmental Engineering, 130(12) (2004) 1225-1235. [15] C.-S. Yoo, and Joo-Suk Kim, Behavior of Soil- Reinforced Retaining Walls in Tiered Arrangement, Journal of the Korean Geotechnical Society, 18(3) (2003) 61-72. [16] M.R. Simac, Design Manual for Segmental Retaining Walls: Modular Concrete Block Retaining Wall Systems, Virginia, 1999. [17] C.a.S.B.K. Yoo, Design Approaches of Geosynthetic Reinforced Modular Block Wall in Tiered Configuration: A Comparative Study, Geosynthetics in Reinforcement and Hydraulic Applications, (2007) 1-10. [18] C. Yoo, and Hyuck-Sang Jung, Measured behavior of a geosynthetic-reinforced segmental retaining wall in a tiered configuration, Geotextiles and Geomembranes, 22(5) (2004) 359-376. [19] C. Yoo, and Sun-Bin Kim, Performance of a two-tier geosynthetic reinforced segmental retaining wall under a surcharge load: full-scale load test and 3D finite element analysis, Geotextiles and Geomembranes, 26(6) (2008) 460-472. [20] G.-Q. Yang, et al, Post-construction performance of a two-tiered geogrid reinforced soil wall backfilled with soil-rock mixture, Geotextiles and Geomembranes, 42(2) (2014) 91-97. [21] S.B. Mohamed, Kuo-Hsin Yang, and Wen-Yi Hung., Finite element analyses of two-tier geosynthetic- reinforced soil walls: Comparison involving centrifuge tests and limit equilibrium results, Computers and Geotechnics, 61 (2014) 67-84. [22] F. Vahedifard, Shahriar Shahrokhabadi, and Dov Leshchinsky., Geosynthetic-reinforced soil structures with concave facing profile, Geotextiles and Geomembranes, 44(3) (2016) 358-365. [23] A.R.R.K.R. Tognon, and Richard WI Brachman., Evaluation of side wall friction for a buried pipe testing facility, Geotextiles and Geomembranes, 17(4) (1999) 193-212. [24] C. Xiao, Jie Han, and Zhen Zhang., Experimental study on performance of geosynthetic-reinforced soil model walls on rigid foundations subjected to static footing loading, Geotextiles and Geomembranes, 44(1) (2016) 81-94. [25] H.a.M.H.-B. Ahmadi, Experimental and analytical investigations on bearing capacity of strip footing in reinforced sand backfills and flexible retaining wall, Acta Geotechnica, 7(4) (2012) 357-373. [26] K.J.a.A.B.F. Fabian, Clay Geotextile interaction in large retaining wall models, Geotextiles and Geomembranes, 7(3) (1988) 179-201. [27] M.A.G. Sabermahani, and A. Fakher, Experimental study on seismic deformation modes of reinforced- soil walls, Geotextiles and Geomembranes, 27(2) (2009) 121-136. [28] E. Cicek, Erol Guler, and Temel Yetimoglu, Effect of reinforcement length for different geosynthetic reinforcements on strip footing on sand soil, Soils and Foundations, 55(4) (2015) 661-677. [29] B.M. Das, Principles of foundation engineering, Cengage Learning, Boston, USA, 2014. | ||
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