Hardness and compressive capacity of longitudinally welded very high strength steel tubes

被引：24

作者：

Jiao, Hui ^{[1
]}

Zhao, Xiao-Ling ^{[2
]}

Lau, Adeline ^{[1
]}

机构：

[1] Univ Tasmania, Sch Engn & ICT, Hobart, Tas 7001, Australia

[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3168, Australia

来源：

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH | 2015年 / 114卷

关键词：

Very high strength steel tubes; Heat affected zone; Hardness; Compression capacity; FABRICATED SQUARE; COLUMNS; CONNECTIONS; SECTIONS; BEHAVIOR; FAILURE; TENSION; TESTS;

D O I：

10.1016/j.jcsr.2015.09.008

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents a study on the hardness and compressive capacity of longitudinally welded very high strength (VHS) steel tubes. VHS tubes, with a nominal yield stress of 1350 MPa and an ultimate tensile strength of 1500 MPa, were welded longitudinally to Grade 300 steel plates using the GTAW welding method. The hardness in the heat affected zone (HAZ) dropped to around 40% of that of the VHS steel without welding. The lowest hardness occurred at a location of about 4 mm from the weld toe. The strength in HAZ of longitudinally welded VHS tubes is about 55% of that of VHS tubes. The newly derived HAZ strength reduction factor is applied to predict the load carrying capacity of VHS tubes longitudinally welded to plates, fabricated sections with VHS tubes as corners and concrete-filled fabricated sections. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：405 / 416

页数：12

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