Indian Journal of Science and Technology

Open Access Open Access  Restricted Access Subscription Access

Reliability Analysis of Eccentrically Loaded Bolted Connections in Direct Shear and Tension Using Approximate Procedure


Affiliations
1 Dept. of Civil Engineering, Ahmadu Bello University, Zaria, Nigeria
 

Reliability analysis of eccentric connection fabricated from grade S275 steel plates, in direct shear and tension using approximate method of analysis in accordance with BS5950 (2000) was carried using First Order Reliability Method (FORM). Design variables such as applied load, eccentricity of applied loading, bolt diameter; considering various failure criteria of the connection were considered random and stochastic. It was shown among other findings that, the target safety indices of tensile, shear and combined failure criteria are 3.59, 5.13 and 2.26 respectively. Based on JCCS (2001), while shear design criterion is safe and uneconomical, tensile design criterion is satisfactory and combined criterion is economical and tends to unsafe region. The shear and combined design criteria therefore need to be reviewed in order to achieve a balanced design that gives a better compromise between safety and economy.

Keywords

Reliability, Eccentric Connection, Direct Shear & Tension, Safety Index, BS5950
User

  • BS5950 (2000) Structural use of steelwork, Part 1. British standards institution, London.

  • McGinley TJ (1998) Steel structures: Practical design studies. E&FN Spon, London.

  • Madsen HO, Addo T and Lind NC (1999) Methods of structural safety, Prentice Hall Ltd.

  • Morris LJ and Plum DR (1987) Steelwork design: Section properties and member capacities. Vol.1, Steel construction institute, London.

  • Igba POE (1996) Societal mentality and Engg practice in Nigeria. The Nig. Engineer. 34 (2), 24-32.

  • McGinley TJ and Ang TC (1990) Structural steelwork: Design to limit state theory. E&FN Spon, London.

  • Melchers RE (1999) Structural reliability analysis and prediction. John Wiley & Sons, NY.

  • Abubakar I and Sanusi J (2006) Reliability analysis of crane girders at ultimate limit state. J. Engg. Appl. Sci. 25(1), 39-45.

  • Abubakar I and Mohammed UA (2007) Reliability investigation of steel cased columns. Aus. J. Basic Appl. Sci. 1(4), 561-570.

  • Mortensen D (1993) Safety requirements for foundation structures determined by economical considerations. Int. Symposium on Limit State Design in Geotechnical Engg. 3, 683 – 686

  • Whitman RV (1984) Evaluating calculated risk in geotechnical Engg. J. Geotechnical Engg. Am. Soc. of Civil Engg. 110(2), 145–188.

  • Ellingwood B, Galambos TV, MacGregor JG and Cornell CA (1980) Development of probability-based load criterion for American national standard A58. Special publication 577, National Bureau of Standards, Washington. pp:222.

  • Sorensen JD, Hansen SO and Nielsen TA (2001) Calibration of partial safety factors and target reliability level in Danish structural codes. Proc., IABSE Conf. Safety, Risk & Reliability: Trend. Engg. Malta. pp:1001-1006,

  • Gollwitzer S, Abdou T and Rackwitz RO (1988) First order reliability method users’ guide, Munich, Germany.

  • NKB (1978) Recommendation for loading and safety regulations for structural design. Nordic Committee on Building Regulation Report No: 36, Press Limited, London, UK.

  • JCCS (2001) Probabilistic model code 12th Draft, Parts 1–3.


Abstract Views: 398

PDF Views: 128




  • Reliability Analysis of Eccentrically Loaded Bolted Connections in Direct Shear and Tension Using Approximate Procedure

Abstract Views: 398  |  PDF Views: 128

Authors

Abubakar Idris
Dept. of Civil Engineering, Ahmadu Bello University, Zaria, Nigeria
Yisa Godwin Lazhi
Dept. of Civil Engineering, Ahmadu Bello University, Zaria, Nigeria

Abstract


Reliability analysis of eccentric connection fabricated from grade S275 steel plates, in direct shear and tension using approximate method of analysis in accordance with BS5950 (2000) was carried using First Order Reliability Method (FORM). Design variables such as applied load, eccentricity of applied loading, bolt diameter; considering various failure criteria of the connection were considered random and stochastic. It was shown among other findings that, the target safety indices of tensile, shear and combined failure criteria are 3.59, 5.13 and 2.26 respectively. Based on JCCS (2001), while shear design criterion is safe and uneconomical, tensile design criterion is satisfactory and combined criterion is economical and tends to unsafe region. The shear and combined design criteria therefore need to be reviewed in order to achieve a balanced design that gives a better compromise between safety and economy.

Keywords


Reliability, Eccentric Connection, Direct Shear & Tension, Safety Index, BS5950

References





DOI: https://doi.org/10.17485/ijst%2F2010%2Fv3i3%2F29713