The interlock of a roll formed U-section sheet steel piling under loading was analyzed by means of numerical simulation, and meanwhile the tensile failure experiment was conducted. The results indicated that under the same load, the interlock corners of roll formed steel piling are not only the regions with the lowest safety factor, but also the regions with the highest stress; there are two slippages in the tensile instability process of interlock. Each slippage can be regarded as a failure, and different types of failure mode should be used to evaluate the performance of steel pilings according to different applications. Due to the work hardening effect during the roll forming process, the hardness of the interlock material increases by 16% compared with that of the original sheet steel. It was also found that the instability strength obtained in tensile failure test is only 15. 6% of the tensile strength of the original sheet steel.
Key words
Roll formed sheet steel piling /
interlock /
numerical simulation /
instability
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References
[1] JIANG Fu-sheng. Reference foreign experience to hasten development of piling beam formed by cold bending in China[J]. Steel Rolling, 2006,23(2):40-42.
[2] JIANG Fu-sheng. Discussion on two criterions of cold bend piling beam[J]. Steel Rolling, 2008,25(2):1-6.
Discussion on Two
[3] M.P.Byfield, R.W.Mawer. Analysis of Reduced Modulus Action in U-section Steel Sheet Piles[J]. Journal of Constructional Steel Research.2004,60(3):401-410.
[4] R.J. Crawford, M.P. Byfield. A Numerical Model for Predicting the Bending Strength of Larssen Steel Sheet Piles[J]. Journal of Constructional Steel Research，2002,58(10):1361-1374.
[5] JG/T196-2007 Cold Formed Steel Sheet Piling[S].
[6] BS EN 10249-1：1995 Cold Formed Sheet Piling Of Non-alloy Steels[S].
[7] ZHANG Hong-liang, FENG Guang-hong, Zhang Pei, et al. Cold bending properties of U -section steel sheet pilings[J]. Transactions on Materials Science and Engineering, 2011,29(3): 441-444.
[8] ZHU Wen-liang, WU Ping-bo. Part strength analysis based on COSMOSWorks[J]. Applied Computer Technologies. 2007(12):39-59.
[9] HE Li-jun, et al. Finite element analysis of multi-functional roofbolter swing mechanism with COSMOS/Works[J]. Coaling Mining Machinery, 2010,31(8):130-132.
[10] FENG Guang-hong, ZHANG Hong-liang, Zhang Pei, et al. Properties uniformity analysis of cold formed steel sheet piling[J]. Applied Mechanics and Materials, 2012,174: 102-108.
[11] HU Sheng-de, LI Li-xin, ZHOU Jia-lin, et al. Comparative analysis on strain hardening of thick -wall cold formed steel tube with square and rectangular hollow section[J]. Transactions on Materials Science and Engineering, 2010,28(1):76-80.
[12] LI Li-ming, JIANG Xin-liang, CHEN Zhi-hua, et al. Strain hardening of thick-walled cold formed steel tube[J]. Transaction of Tianjin University, 2008，41(1):85-91.
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Footnotes
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