NUMERICAL ANALYSIS OF ANCHORED SHEET PILE WALLS

Abstract

Anchored sheet pile walls are used to restrain excavation when the depth of the excavation exceeds about 6 m. In this paper, the influence of some parameters on anchored sheet pile walls was studied. The parameters are: anchor inclination with the horizontal ground, the number of anchors (one-row, or more), the cohesion of soil, and angle of internal friction of the backfill soil. The previous parameters affect soil behavior, wall bending moments, and wall displacement. Numerical analysis of the anchored sheet pile walls was implemented using a finite element program GEO5. The results of the analysis indicated that the optimum angle of anchor inclination is 25 degrees to reduce the horizontal displacement at the top of the wall and maximum bending moment. Variation of the angle of internal friction has a significant effect on the wall. As the friction angle increases, the maximum displacement and the internal forces decrease. As the cohesion of soil increases, the maximum bending moment, shear force, and wall displacement decreases. Increasing the number of anchors decreases the maximum bending moment, wall displacement, and increases the maximum shear force. ‫اﻹﻟﯿﻜﺘﺮوﻧﻰ‬ ‫اﻟﺒﺮﯾﺪ‬ ‫ﻟﻠﺒﺎﺣﺚ‬ : ‫اﻟﻤﻠﺨﺺ‬ ‫ﻋﻦ‬ ‫اﻟﺤﻔﺮ‬ ‫ﻋﻤﻖ‬ ‫ﯾﺰﯾﺪ‬ ‫ﻋﻨﺪﻣﺎ‬ ‫اﻟﺤﻔﺮ‬ ‫ﺟﻮاﻧﺐ‬ ‫ﻟﺴﻨﺪ‬ ‫اﻟﻤﺮﺑﻮطﺔ‬ ‫اﻟﺴﺘﺎﺋﺮﯾﺔ‬ ‫اﻟﺤﻮاﺋﻂ‬ ‫ﺗﺴﺘﺨﺪم‬ ‫ﯾﻘﺎرب‬ ‫ﻣﺎ‬ ٦ ‫ﻣﺘﺮ‬. ‫ﺗﻢ‬ ‫اﻟﺒﺤﺚ‬ ‫ھﺬا‬ ‫وﻓﻰ‬ ‫اﻟﻤﺆﺛﺮة‬ ‫اﻟﻌﻮاﻣﻞ‬ ‫ﺑﻌﺾ‬ ‫دراﺳﺔ‬ ‫اﻟﺤﺎﺋﻂ‬ ‫ﻋﻠﻰ‬ ‫اﻟﺴﺘﺎﺋﺮى‬ ‫ﺗﺸﻤﻞ‬ ‫واﻟﺘﻲ‬ : ‫اﻟ‬ ‫ﻣﯿﻞ‬ ‫زاوﯾﺔ‬ ‫ﻤﺮﺑﻂ‬ ، ‫اﻟ‬ ‫ﺻﻔﻮف‬ ‫ﻋﺪد‬ ‫ﻤﺮاﺑﻂ‬ ، ‫زاوﯾﺔ‬ ‫اﻟﺮدم‬ ‫ﻟﺘﺮﺑﺔ‬ ‫اﻻﺣﺘﻜﺎك‬ ، ‫اﻟﺘﺮﺑﺔ‬ ‫ﺗﻤﺎﺳﻚ‬. ‫وﻛﺬﻟﻚ‬ ‫اﻟﺤﺎﺋﻂ‬ ‫ﻓﻲ‬ ‫اﻟﻤﺘﻮﻟﺪة‬ ‫اﻟﻘﺺ‬ ‫وﻗﻮى‬ ‫اﻹﻧﺤﻨﺎء‬ ‫ﻋﺰوم‬ ‫ﻋﻠﻰ‬ ‫اﻟﻌﻮاﻣﻞ‬ ‫ھﺬه‬ ‫ﺗﺆﺛﺮ‬ ‫ﺣﯿﺚ‬ ‫أﻓﻘﯿﺔ‬ ‫اﻹزاﺣﺔ‬ ‫ﻟﻠﺤﺎﺋﻂ‬. ‫ﺑﺮﻧﺎﻣﺞ‬ ‫ﺑﺎﺳﺘﺨﺪام‬ ‫اﻟﺪراﺳﺔ‬ ‫ھﺬه‬ ‫وﺗﻤﺖ‬ ‫ﻣﺘﺨﺼﺺ‬ ‫ا‬ ‫ﺣﻞ‬ ‫ﻓﻰ‬ ‫ﻧﻈﺮﯾﺔ‬ ‫ﻋﻠﻰ‬ ‫ﯾﻌﺘﻤﺪ‬ ‫واﻟﺬي‬ ‫اﻟﺠﯿﻮﺗﻘﻨﯿﺔ‬ ‫ﻟﻤﺴﺎﺋﻞ‬ ‫اﻟﻤﺤﺪودة‬ ‫اﻟﻌﻨﺎﺻﺮ‬. ‫اﻟ‬ ‫ﻣﯿﻞ‬ ‫زاوﯾﺔ‬ ‫أن‬ ‫إﻟﻰ‬ ‫اﻟﺪراﺳﺔ‬ ‫وﺧﻠﺼﺖ‬ ‫ﻤﺮﺑﻂ‬ ‫ھﻰ‬ ‫اﻟﻤﺜﻠﻰ‬ ٢٥ ‫ﻓﻰ‬ ‫اﻟﻘﺺ‬ ‫وﻗﻮى‬ ‫اﻟﻌﺰوم‬ ‫ﻟﺘﻘﻠﯿﻞ‬ ‫وذﻟﻚ‬ ‫درﺟﺔ‬ ‫و‬ ‫اﻟﺤﺎﺋﻂ‬ ‫اﻹ‬ ‫زاﺣﺔ‬ ‫اﻷﻓ‬ ‫ﻘﯿﺔ‬. ‫ا‬ ‫زاوﯾﺔ‬ ‫زادت‬ ‫ﻛﻠﻤﺎ‬ ‫أﻧﮫ‬ ‫ﺣﯿﺚ‬ ‫اﻟﺤﺎﺋﻂ‬ ‫ﻋﻠﻰ‬ ‫ﻛﺒﯿﺮ‬ ‫ﺗﺄﺛﯿﺮ‬ ‫ﻟﮭﺎ‬ ‫اﻟﺮدم‬ ‫ﺗﺮﺑﺔ‬ ‫اﺣﺘﻜﺎك‬ ‫زاوﯾﺔ‬ ‫أن‬ ‫ﻛﻤﺎ‬ ‫ﻻﺣﺘﻜﺎك‬ ‫اﻟﺪاﺧﻠﻲ‬ ‫اﻟﺘﻤﺎﺳﻚ‬ ‫وﻗﻮة‬ ‫اﻟﻘﺼﻮى‬ ‫اﻷﻓﻘﯿﺔ‬ ‫واﻹزاﺣﺔ‬ ‫اﻟﻘﺼﻮى‬ ‫اﻟﻘﺺ‬ ‫وﻗﻮة‬ ‫اﻷﻗﺼﻰ‬ ‫اﻟﻌﺰم‬ ‫ﻗﻞ‬ ‫ﻛﻠﻤﺎ‬ ‫ﻟﻠﺘﺮﺑﺔ‬. ‫ﺻﻔﻮف‬ ‫ﻟﻌﺪد‬ ‫ﺑﺎﻟﻨﺴﺒﺔ‬ ‫اﻟ‬ ‫ﻤﺮاﺑﻂ‬ ‫اﺳﺘﺨﺪام‬ ‫أن‬ ‫وﺟﺪ‬ ‫ﻓﻘﺪ‬ ‫ﺻﻒ‬ ‫ﻣﻦ‬ ‫أﻛﺜﺮ‬ ‫ﻋﻠﻰ‬ ‫اﻟﻤﺆﺛﺮة‬ ‫اﻟﻘﺺ‬ ‫ﻗﻮة‬ ‫ﻣﻦ‬ ‫ﯾﺰﯾﺪ‬ ‫وﻟﻜﻨﮫ‬ ‫أﻓﻘﯿﺔ‬ ‫إزاﺣﺔ‬ ‫وأﻗﺼﻰ‬ ‫اﻻﻧﺤﻨﺎء‬ ‫ﻋﺰم‬ ‫ﯾﻘﻠﻞ‬ ‫اﻟﺤﺎﺋﻂ‬. ‫ا‬ ‫اﻟﻤﻔﺘﺎﺣﯿﺔ‬ ‫ﻟﻜﻠﻤﺎت‬ : ‫اﻟﻤﺮﺑﻮطﺔ‬ ‫اﻟﺴﺘﺎﺋﺮﯾﺔ‬ ‫اﻟﺤﻮاﺋﻂ‬ ، ‫اﻟﻌﺪدي‬ ‫اﻟﺘﺤﻠﯿﻞ‬ ، ‫اﻟﺘﻤﺎﺳﻚ‬ ، ‫اﻟﺪاﺧﻠﻰ‬ ‫اﻹﺣﺘﻜﺎك‬ ‫زاوﯾﺔ‬ .