Study on Strength-Difference Forged Hubbed Flange Test

doi:10.11930/j.issn.10.11930.2015.4.107

Abstract

Abstract: In recent years, the forged hubbed flange has been widely used on steel tube tower of power transmission line. However, the hubbed flange is of single specification and mismatch with steel tube in stress(i.e., the steel tube with relatively low bearing capacity is connected to the forged flange with relatively high bearing capacity), which makes the steel tube tower uneconomical. Based on the existing design method and practical use of hubbed flange, a strength difference arrangement scheme is determined for forged flange according to the stress characteristics of the members of steel tube tower and the specification bank for steel tube. The stress characteristics of flange and bolt are tested and the rationality of strength-difference-based arrangement of forged hubbed flange and the stress correction coefficient of bolts are verified through the axial tensile test in which the specimen of strength-difference-arranged Q420 high-strength buttwelded forged hubbed flange is used. The test can provide the fundamental data for the design of steel structure in future.

Key words: strength-difference, forged hubbed flange, Q420, steel tube tower, stress correction coefficient of flange bolts

CLC Number:

TU391

HE Changhua, XING Haijun, LI Qinghua, WU Jing. Study on Strength-Difference Forged Hubbed Flange Test[J]. Electric Power, 2015, 48(4): 107-112.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.10.11930.2015.4.107

https://www.electricpower.com.cn/EN/Y2015/V48/I4/107

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