钢结构焊接“包角焊”

wangxu96671

在钢结构焊接时，经常听到包角焊要求，请问这是哪个标准要求的，焊接具体要求是啥，对焊缝质量有哪些影响。

cnooc

MODERN STEEL CONSTRUCTION
may 2008

To return or not to return?
End returns, otherwise known as boxing, are the continuation
of a fillet weld around the corner of a member as an extension of
the primary weld. End returns are used to ensure quality terminations
to welds and to provide some resistance to prying of the weld
roots. In general, end returns are neither prohibited nor required.
AISC specification Section J2.2b provides further discussion on the
requirements and limitations for end returns. In statically loaded
structures, fillet welds can be stopped short of the end of the joint by
a length equal to the leg size of the weld, or continue to the end or
be returned around the corner, except as noted in J2.2b(1)-(4). One
exception to note is that for flexible connections, such as framing
angles and tees, the tension edges of the outstanding legs or flanges
must be left unwelded over a portion of their length to assure flexibility
of the connection. If end returns are used in this case, their
length must be restricted to not more than four times the weld size or
half the width of the angle, as shown in the following figure.

PENG

Refer to AWS D1.1-----End returns, 2.3.4, 2.3.5.2, 2.4.2.1,2.9.3.1, 2.9.3.3

wuqitao0000

请高手予以解答，谢谢。

xhqian

谢谢楼主分享资料。

wangxu96671

谢谢PENG ，能给解释一下吗？

盛夏之云

大家帮帮楼主，共同学习进步！

tcctianzw

谢谢楼主的资料分享

122哈哈哈

大家帮助哈楼主的一起学习

wangxu96671

EN1090-2-2008版中7.5.8.2有包角焊的规定
AWS D1.1中也有规定