پیوندهای مفید
آمار
| تعداد نشریات | 21 |
| تعداد شماره‌ها | 645 |
| تعداد مقالات | 9,455 |
| تعداد مشاهده مقاله | 68,227,233 |
| تعداد دریافت فایل اصل مقاله | 47,766,931 |
Comparison between Calculating Live Load Distribution Factors by AASHTO-LRFD Equations and Finite Element Method of Precast Concrete U-Girder Bridges | ||
| Journal of Rehabilitation in Civil Engineering | ||
| مقاله 7، دوره 12، شماره 4 - شماره پیاپی 36، بهمن 2024، صفحه 103-115 اصل مقاله (2.09 M) | ||
| نوع مقاله: Regular Paper | ||
| شناسه دیجیتال (DOI): 10.22075/jrce.2024.32025.1911 | ||
| نویسندگان | ||
| Kamel T Kamel* 1؛ Ahmed H Amer2؛ Ahmed Z Hanafi3 | ||
| 1Department of Civil Engineering, Obour High Institute for Engineering and Technology, Cairo, Egypt | ||
| 2Department of Civil Engineering, Elgazeera High Institute for Engineering, Cairo, Egypt | ||
| 3Department of Civil Engineering, Faculty of Engineering, Cairo University, Giza, Egypt | ||
| تاریخ دریافت: 17 مهر 1402، تاریخ بازنگری: 20 فروردین 1403، تاریخ پذیرش: 13 اردیبهشت 1403 | ||
| چکیده | ||
| The main objective of this study is to make a comparison between calculating live load distribution factors using AASHTO-LRFD equations and the finite element analysis of precast concrete U-girder bridges. The AASHTO-LRFD specifications provide empirical equations for calculating the distribution factors. Little information is available regarding the accuracy of these equations for this kind of bridge girder. As a result, an extensive parametric study was carried out using finite element modelling to evaluate the parameters that influence the live load distribution factors and to verify the accuracy of the AASHTO-LRFD equations to calculate these factors. The parameters considered in this study were bridge span, girder spacing, number of girders, and number of lanes. 52 prototype bridges were analysed using CSI Bridge software to determine moment and shear distribution factors due to the effect of the AASHTO-LRFD live load model (HL-93). All of the bridges studied were assumed to have straight and simply supported spans. According to the study''s results, the length of the girder does not affect the LLDF, while the parameters of the distance between girders, girder count, and lane count have a significant impact. In most cases, the AASHTO equations overestimate the calculated moment and shear distribution factors. Especially for wide bridges, the parametric study found that the difference between AASHTO equations and FEA results for calculating shear distribution factors was 87%. Consequently, it is best to avoid using these equations on wide bridges. | ||
| کلیدواژه‌ها | ||
| Live load distribution factors؛ AASHTO specifications؛ Finite element analysis؛ U-girder bridges | ||
| مراجع | ||
|
[1] Furinghetti M, Pavese A, Lunghi F, Silvestri D. Strategies of structural health monitoring for bridges based on cloud computing. J Civ Struct Heal Monit 2019;9:607–16. https://doi.org/10.1007/s13349-019-00356-5.
[2] Bayraktar A, Altunişik AC, Türker T. Structural health assessment and restoration procedure of an old riveted steel arch bridge. Soil Dyn Earthq Eng 2016;83:148–61. https://doi.org/10.1016/j.soildyn.2016.01.012.
[3] Jang S, Li J, Spencer BF. Corrosion Estimation of a Historic Truss Bridge Using Model Updating. J Bridg Eng 2013;18:678–89. https://doi.org/10.1061/(asce)be.1943-5592.0000403.
[4] Bonopera M, Liao WC, Perceka W. Experimental–theoretical investigation of the short-term vibration response of uncracked prestressed concrete members under long-age conditions. Structures, vol. 35, Elsevier; 2022, p. 260–73. https://doi.org/10.1016/j.istruc.2021.10.093.
[5] Yang J, Guo T, Li A. Experimental investigation on long-term behavior of prestressed concrete beams under coupled effect of sustained load and corrosion. Adv Struct Eng 2020;23:2587–96. https://doi.org/10.1177/1369433220919067.
[6] Gocál J, Odrobiňák J. On the influence of corrosion on the load-carrying capacity of old riveted bridges. Materials (Basel) 2020;13. https://doi.org/10.3390/ma13030717.
[7] Ataei S, Miri A, Jahangiri M. Assessment of load carrying capacity enhancement of an open spandrel masonry arch bridge by dynamic load testing. Int J Archit Herit 2017;11:1086–100. https://doi.org/10.1080/15583058.2017.1317882.
[8] Wang X, Mao X, Frangopol DM, Dong Y, Wang H, Tao P, et al. Full-scale experimental and numerical investigation on the ductility, plastic redistribution, and redundancy of deteriorated concrete bridges. Eng Struct 2021;234:111930. https://doi.org/10.1016/j.engstruct.2021.111930.
[9] Olaszek P, Łagoda M, Casas JR. Diagnostic load testing and assessment of existing bridges: examples of application. Struct Infrastruct Eng 2014;10:834–42. https://doi.org/10.1080/15732479.2013.772212.
[10] Dong C, Bas S, Debees M, Alver N, Catbas FN. Bridge Load Testing for Identifying Live Load Distribution, Load Rating, Serviceability and Dynamic Response. Front Built Environ 2020;6:46. https://doi.org/10.3389/fbuil.2020.00046.
[11] Sun Z, Siringoringo DM, Fujino Y. Load-carrying capacity evaluation of girder bridge using moving vehicle. Eng Struct 2021;229. https://doi.org/10.1016/j.engstruct.2020.111645.
[12] Gatti M. Structural health monitoring of an operational bridge: A case study. Eng Struct 2019;195:200–9. https://doi.org/10.1016/j.engstruct.2019.05.102.
[13] Lee ZK, Bonopera M, Hsu CC, Lee BH, Yeh FY. Long-term deflection monitoring of a box girder bridge with an optical-fiber, liquid-level system. Structures, vol. 44, Elsevier; 2022, p. 904–19. https://doi.org/10.1016/j.istruc.2022.08.048.
[14] Harris DK. Assessment of flexural lateral load distribution methodologies for stringer bridges. Eng Struct 2010;32:3443–51. https://doi.org/10.1016/j.engstruct.2010.06.008.
[15] Seo J, Phares B, Wipf TJ. Lateral Live-Load Distribution Characteristics of Simply Supported Steel Girder Bridges Loaded with Implements of Husbandry. J Bridg Eng 2014;19:4013021. https://doi.org/10.1061/(asce)be.1943-5592.0000558.
[16] Ravazdezh F, Seok S, Haikal G, Ramirez JA. Effect of Nonstructural Elements on Lateral Load Distribution and Rating of Slab and T-Beam Bridges. J Bridg Eng 2021;26:4021063. https://doi.org/10.1061/(asce)be.1943-5592.0001766.
[17] Hughs E, Idriss R. Live-Load Distribution Factors for Prestressed Concrete, Spread Box-Girder Bridge. J Bridg Eng 2006;11:573–81. https://doi.org/10.1061/(asce)1084-0702(2006)11:5(573).
[18] A Unified Approach for LRFD Live Load Moments in Bridge Decks by Christopher Higgins 1 , O. Tugrul Turan 2 , Robert J. Connor 3 , and Judy Liu 3 n.d.
[19] Specifications LBD. American Association of State Highway and Transportation Officials (AASHTO). Washington, DC, USA 2012.
[20] Alawneh M, Tadros M, Morcous G. Innovative System for Curved Precast Posttensioned Concrete I-Girder and U-Girder Bridges. J Bridg Eng 2016;21:4016076. https://doi.org/10.1061/(asce)be.1943-5592.0000938.
[21] Wu X, Li H. Experimental and analytical behavior of a prestressed U-shaped girder bridge. Struct Eng Mech 2017;61:427–36. https://doi.org/10.12989/sem.2017.61.3.427.
[22] SAP2000. Finite Element Analysis and Design of Structures 2004.
[23] CSI Bridge. Finite element analysis and design of bridges 2014.
[24] Tiwari S, Bhargava P. Load Distribution Factors for Composite Multicell Box Girder Bridges. J Inst Eng Ser A 2017;98:483–92. https://doi.org/10.1007/s40030-017-0243-x.
[25] Terzioglu T, Hueste MBD, Mander JB. Live Load Distribution Factors for Spread Slab Beam Bridges. J Bridg Eng 2017;22:4017067. https://doi.org/10.1061/(asce)be.1943-5592.0001100.
[26] Thakuria P, Talukdar S. Live Load Distribution Factor in Precast I-Girder Bridge. IOP Conf Ser Mater Sci Eng 2018;431. https://doi.org/10.1088/1757-899X/431/11/112012.
[27] Razzaq MK, Sennah K, Ghrib F. Live load distribution factors for simply-supported composite steel I-girder bridges. J Constr Steel Res 2021;181:106612. https://doi.org/10.1016/j.jcsr.2021.106612.
[28] Tarhini KM, Frederick GR. Wheel Load Distribution in I‐Girder Highway Bridges. J Struct Eng 1992;118:1285–94. https://doi.org/10.1061/(asce)0733-9445(1992)118:5(1285).
[29] Zokaie T, Imbsen RA, Osterkamp TA. Distribution of wheel loads on highway bridges. Transp Res Rec 1991;1290:119–26.
[30] Zokaie T. AASHTO-LRFD Live Load Distribution Specifications. J Bridg Eng 2000;5:131–8.
[31] Quadri AI, Ali K. Numerical Appraisal of Reinforced Concrete Dapped-End Girder Under High-Fatigue Fixed Pulsating and Moving Loads. Transp Res Rec 2024;2678:257–78. https://doi.org/10.1177/03611981231184176.
[32] Manual HC. Transportation Research Board of the National Academies. Washington, DC: 2010.
[33] AASHTO. “Standard Specifications for Highway Bridges American Association of State Highway and Transportation Officials”, ABD. 2002. | ||
|
آمار تعداد مشاهده مقاله: 561 تعداد دریافت فایل اصل مقاله: 579 |
||