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| 1 | Feasibility evaluation for excavation of Naghshe Jahan Square subway station by underground methods显示文摘In recent years, in reaction to the increasing usage of urban areas, the excavation of underground spaces has been developed. One of the most challenging issues encountered by engineers is the construction of subway stations as large underground spaces at shallow depth with soft surrounding soils. In this paper, Naghshe Jahan Square subway station located in Isfahan, Iran, has been simulated by geomechanical fnite difference method(FDM). This station is located under important historical structures. Therefore, the ground displacement and surface settlement induced by the excavation of the subway station should be strictly controlled. Many of such problems are affected by selected excavation method. For these reasons, different underground excavation methods associated with construction have been studied. In this study, sequential excavation method and large-diameter curved pipe roofng method are used and the numerical results of the two methods are compared. The presence of groundwater table obliges us to choose special techniques for the stability of the ground around the subway station during construction; hence compressed air and ground freezing techniques are utilized in the simulations of the subway station. Finally, after choosing appropriate support systems, the large-diameter curved pipe roofng method with 1.5 m spacing between curved pipes is proposed. | Morteza Abdi Cherlo Hamid Hashemolhosseini Masoud Cheraghi Saeed Mahdevari | 2013 | Journal of Rock Mechanics and Geotechnical Engineering2013，5，6： | 3 |
| 2 | Axial response and material efficiency of tapered helical piles显示文摘Different techniques have been proposed to increase the bearing capacity of open-ended piles.Welding helices to the shaft and tapering the pile shaft could be used simultaneously to enhance the static and dynamic behaviors of these piles.This paper subjects the bearing capacity,stiffness,frictional behavior,and material efficiency of the tapered helical piles to scrutiny.Tapered helical piles are introduced herein as an alternative option to improve the material efficiency of hollow piles.Based on the Taguchi method,a series of experiments was designed and conducted.The axial responses of tapered helical piles are also investigated using finite element analyses.The results derived from loadedisplacement curves and strain gages are used to characterize the axial compression responses of tapered helical piles.The effects of tapered angle,helices diameter and helices distance are examined using dimensionless parameters,and the degree of contribution of these factors is calculated on each of the enumerated variables individually.Experimental results show that the shaft friction resistance of tapered helical piles increases continuously with the pile head settlement.Furthermore,the effect of tapered wall on the shaft friction resistance is more tangible at low stress levels.The results showed that the relative material efficiency factor of the optimum pile could be 2.5 times that of unoptimized pile with a similar quantity of material. | Hamid Mortazavi Bak Amir M.Halabian Hamid Hashemolhosseini Mohammadali Rowshanzamir | 2021 | Journal of Rock Mechanics and Geotechnical Engineering2021，13，1： | 3 |
| 3 | Rapamycin inhibition of the G1 to S transition is mediated by effects on eyclin D1 mRNA and protein stability显示文摘 | Hashemolhosseini S Nagamine Y Morley S J | 1998 | J Biol Chem1998，273，14： | 1 |
| 4 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability 显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
| 5 | Measuring fracture toughness of crystalline marbles under modes I and II and mixed mode I - II loading conditions using CCNBD and HCCD specimens显示文摘 | AMROLLAHI H BAGHBANAN A HASHEMOLHOSSEINI H | 2011 | International Journal of Rock Mechanics and Mining Sciences2011，48，： | 1 |
| 6 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability显示文摘 | HASHEMOLHOSSEINI S NAGAMINE Y MORLEY S J | 1998 | Biol Chem1998，273，14： | 1 |
| 7 | Numerical analysis of ground surface vibration induced by underground train movement 显示文摘 | Nejati H R Ahmadi M Hashemolhosseini H | 2012 | Tunnelling and Underground Space Technology2012，29，5： | 1 |
| 8 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability 显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
| 9 | Numerical analysis of ground surface vibration induced by underground train movement显示文摘 | NEJATI H R AHMADI M HASHEMOLHOSSEINI H | | 0，，： | 1 |
| 10 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyelin D1 mRNA and protein stability 显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
| 11 | Rapamycin inhi- bition of the Gt to S transition is mediated by effects on cyclin D1 mRNA and protein stability显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
| 12 | Nu- merical analysis of ground surface vibration induced by underground train movement显示文摘 | Nejati H R Ahmadi M Hashemolhosseini H | 2012 | Tunnelling and Underground Space Technology2012，29，5： | 1 |
| 13 | Effects of fracture geometry and stress on the strength of a fractured rock mass显示文摘 | Khani A Baghbanan A Norouzi S Hashemolhosseini H | | 0，，01： | 1 |
| 14 | Rapamycin inhibition of G1 to S transition is mediated by effects on Cyclin D1 mRNA and protein stability显示文摘 | Hashemolhosseini S Nagamine Y Morley S | 1998 | J Biol Chem1998，273，14： | 1 |
| 15 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ Desrivieres S Mercep L Ferrari S | 1998 | J Biol Chem1998，273，14： | 1 |
| 16 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability 显示文摘 | HASHEMOLHOSSEINI S NAGAMINE Y MORLEY S J | 1998 | J Biol Chem1998，273，14： | 1 |
| 17 | Lambert - Eaton myas- thenic syndrome - diagnosis, pathogenesis and therapy 显示文摘 | Htilsbrink R Hashemolhosseini S | 2014 | Clin Neurophysiol2014，125，12： | 1 |
| 18 | A common structural methanistn underlying GCMB mutations that cause hypoparathyroidism 显示文摘 | Sticht H Hashemolhosseini S | 2006 | Med Hypotheses2006，67，3： | 1 |
| 19 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclin D1 mRNA and protein stability显示文摘 | Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
| 20 | Rapamycin inhibition of the G1 to S transition is mediated by effects on cyclinD1 mRNA and protein stability显示文摘 | Hashemolhosseini S Nagamine Y Morley SJ | 1998 | J Biol Chem1998，273，14： | 1 |
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