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| 1 | Thermo-mechanical constitutive modeling of unsaturated clays based on the critical state concepts显示文摘A thermo-mechanical constitutive model for unsaturated clays is constructed based on the existing model for saturated clays originally proposed by the authors.The saturated clays model was formulated in the framework of critical state soil mechanics and modi fi ed Cam-clay model.The existing model has been generalized to simulate the experimentally observed behavior of unsaturated clays by introducing Bishop’s stress and suction as independent stress parameters and modifying the hardening rule and yield criterion to take into account the role of suction.Also,according to previous studies,an increase in temperature causes a reduction in speci fi c volume.A reduction in suction(wetting)for a given con fi ning stress may induce an irreversible volumetric compression(collapse).Thus an increase in suction(drying)raises a speci fi c volume i.e.the movement of normal consolidation line(NCL)to higher values of void ratio.However,some experimental data con fi rm the assumption that this reduction is dependent on the stress level of soil element.A generalized approach considering the effect of stress level on the magnitude of clays thermal dependency in compression plane is proposed in this study.The number of modeling parameters is kept to a minimum,and they all have clear physical interpretations,to facilitate the usefulness of model for practical applications.A step-by-step procedure used for parameter calibration is also described.The model is fi nally evaluated using a comprehensive set of experimental data for the thermo-mechanical behavior of unsaturated soils. | Saeed Tourchi Amir Hamidi | 2015 | Journal of Rock Mechanics and Geotechnical Engineering2015，7，2： | 2 |
| 2 | The association between impaired autophagy and the development of congenital ureteropelvic junction obstruction 显示文摘 | Tourchi A Kajbafzadeh AM Ebadi M | 2014 | Urology2014，84，6： | 1 |
| 3 | Miniature pyeloplasty as a minimally invasive surgery with less than 1 day admission in infants显示文摘 | Kajbafzadeh AM Tourchi A Nezami BG | 2011 | J Pediatr Urol2011，7，3： | 1 |
| 4 | Endoureterotomy as the initial management of concurrent ureteropelvic and ureterovesical junction obstruction after failed conservative therapy显示文摘 | Ebadi M Kajbafzadeh AM Tourchi A | 2013 | Urology2013，82，1： | 1 |
| 5 | Bladder muscular wall regeneration with autologous adipose mesenchymal stem cells on three-dimensional collagen-based tissue-engineered prepuce and biocompatible nanofibrillar scaffold显示文摘 | Abdol-Mohammad Kajbafzadeh Ali Tourchi Amir-Abbas Mousavian Leila Rouhi Seyyed Mohammad Tavangar Nastaran Sabetkish | 2014 | Journal of Pediatric Urology2014，，： | 1 |
| 6 | Concomi- tant urethral triplication, bladder, and colon duplication 显示文摘 | Tourchi A1 Kajbafzadeh AM Khakpour M | 2012 | Int Urol Nephro12012，44，1： | 1 |
| 7 | Miniature pyeloplasty as a minimally invasive surgery with less than 1 day admission in infants显示文摘 | Kajbafzadeh A M Tourchi A Nezami B G | | 0，，3： | 1 |
| 8 | A novel alternative for renal replacement therapy: 2-year successful colonic dialysis via a Malone antegrade continent enema stoma显示文摘 | Abdol-Mohammad Kajbafzadeh Atefeh Zeinoddini Reza Heidari Haleh NaserHodjjati Ali Tourchi | 2013 | Journal of Pediatric Urology2013，，： | 1 |
| 9 | Disseminated tuberculosis after extracorporeal shock-wave lithotripsy in an AIDS patient presenting with urosepsis显示文摘 | Tourchi A Ebadi M Hosseinzadeh A | 2014 | Int J STD AIDS2014，25，3： | 1 |
| 10 | Concomitant endoureterotomy and dextranomer/hyaluronic acid subureteral injection for management of obstructive refluxing megaureter显示文摘 | KAJBAFZADEH AM TOURCHI A | 2012 | J Endourol2012，26，4： | 1 |
| 11 | Disseminated tuberculosis after extracorporeal shock-wave lithotripsy in an AIDS patient presenting with urosepsis显示文摘 | Tourchi A Ebadi M Hosseinzadeh A | 2014 | Int J STD AIDS2014，25，3： | 1 |
| 12 | Hypospadias repair and glans augmentation using a modified Mathieu technique显示文摘 | Behtash Ghazi Nezami Amir Hassan Mahboubi Roozbeh Tanhaeivash Ali Tourchi Abdol Mohammad Kajbafzadeh | 2010 | Pediatric Surgery International2010，，3： | 1 |
| 13 | A critical state based thermo-elasto-plastic constitutive model for structured clays显示文摘In this paper, a critical state based thermo-elasto-plastic constitutive model is developed for destructured, naturally structured and artificially structured saturated clays. The model is an extension of the previously developed thermo-mechanical model by the authors for saturated clays, considering the effects of structure on the mechanical behaviors of the soil. It is based on change in the position of normal consolidation line(NCL) in a compression plane(e-ln p′) due to the soil's structure and variation of temperature. The present model is able to simulate the mechanical behavior of structured saturated clays in a triaxial plane at elevated temperatures lower than the boiling point of water. An attempt has been made to use the lowest possible number of parameters compared with that of Came Clay model and to ensure that these new parameters have clear physical interpretations. The sufficiency of the model was verified by the test results on artificially and naturally structured soils using thermal triaxial tests. | Amir Hamidi Saeed Tourchi Fatemeh Kardooni | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017，9，6： | 1 |
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