Experimental Study on Bearing Capacity of Q690 High-Strength Steel Tubes under Axial Load

Abstract:

With the rapid development of power transmission and transformation projects in China, steel supporting structure has already became the most popular structural form for these structures. However, the limit of steel grade used for current substation supporting structures is normally Q420, compared with that of Q690 used in other countries. When the high-strength steel is used, the geometric parameters of section for members become smaller, and the stability of members is the most important factors to influence the bearing capacity of structures. The stability factor for axial loaded steel members in current 《Code for design of steel structures》(GB50017-2003) was derived based on the experimental results for steel members with lower steel grade, the results are inevitably different from those for high-strength steel members. To make the calculations of Q690 high-strength steel tubes more accurate and reasonable, this paper conducts experimental study on the bearing capacity of Q690 high-strength steel tubes under axial load to provide scientific basis for practical design of these structures.

• Periodical: Applied Mechanics and Materials (Volumes 638-640)
• Pages: 101-104
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.638-640.101
• Online since: September 2014
• Authors: Yi Liang Peng, Guo Tian Li, Xuan Min Han, Lei Chen*
• Keywords: Axially Bearing Capacity, Q690 High-Strength Steel Tube, Stability Factor, Supporting Structures for Substation

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