Effect of Bolt Slippage on the Static Response of Lattice Structure

Abstract:

Bolted connection technology has been widely used in steel structure engineering. Conventional structural analysis softwares solve related problems with the assumption of regarding the bolted connection as a rigid joint connection. Thus the calculated internal forces of the structure members are bigger than those of real measurements, and the calculated displacement are smaller than the experimental ones under the same load. One of the main reasons is the bolt slippage. In the lattice structure, there are a large number of bolted connections with thin connection members and small-diameter bolts, however, their clamping forces are relatively small. These characteristics have significant effects on the static response of the lattice structure. In this paper, in comparison with the test results, the deformation-load curves of the bolt connections are introduced into the finite element simulation, revealing the effect of bolt slippage on the static response of lattice structure. The simulation and test results show that the bolt slippage causes the redistribution of the member internal forces of the lattice structure and increases the displacement of the lattice structure,thus the simulation results with bolt slippage are more close to the real values. The proposed algorithm and simulation results would provid good reference for further engineering applications.

• Periodical: Applied Mechanics and Materials (Volumes 444-445)
• Pages: 90-95
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.444-445.90
• Online since: October 2013
• Authors: Peng Wang, Hai Bo Chen, Wei Dong Huang, Yue Lin, Hui Wu Zhang
• Keywords: Bolt Slippage, FEM Model, Lattice Structure, Static Response, Test Comparison

References

[1] XU Jianshe, CHEN Yiyi, HAN Lin, et al. Slip process analysis of regular bolt and bearing type high-tensile bolt shear connections [J]. Journal of Tongji University, 2003，31(5)：510-514. (in chinese).

[2] K.F. Chung, L. Lau. Experimental investigation on bolted connections among cold formed steel members [J]. Engineering Structures, 1999, 21: 898-911.

DOI: 10.1016/s0141-0296(98)00043-1

[3] K.F. Chung, K.H. Ip. Finite element modeling of bolted connections between cold-formed steel strips and hot rolled steel plates under static shear loading [J]. Engineering Structures, 2000, 22: 1271-1284.

DOI: 10.1016/s0141-0296(99)00082-6

[4] Kitipornchai S, AL-bermani F. G. A. and Peyrot A. H. Effect of bolt slippage on ultimate behavior of lattice structure [J]. Journal of Structural Engineering, ASCE, 1994, 120(8): 2281-2287.

DOI: 10.1061/(asce)0733-9445(1994)120:8(2281)

[5] Ungkurapinan N., Chandrakeerthi R, Rajapakse R. K. N. D, et al. Joint slip in electrical transmission towers [J]. Engineering Structures, 2003, 25(6): 779-788.

DOI: 10.1016/s0141-0296(03)00003-8

[6] Ahmed K.I. E, Rajapakse R.K.N. D, Gadala M.S. Influence of bolted-Joint slippage on the response of transmission towers subjected to Frost-Heave [J]. Advances in Structural Engineering, 2009, 12(1): 1-17.

DOI: 10.1260/136943309787522641

[7] W.Q. Jiang, Z.Q. Wang, G. Mcclure, et al. Accurate modeling of joint effects in lattice transmission towers [J]. Engineering Structures, 2011, 33: 1817-1827.

DOI: 10.1016/j.engstruct.2011.02.022

[8] Ungkurapinan N., A study of Joint slip in galvanized bolted angle connections. M. Ac. (CE) thesis. Canad: University of Manitoba, (2000).