To provide a cross bonded structure of beam members, which excels in operability in welding and which ensures sufficient strength.
In the cross bonded structure, by using first to third divided members 22-24 that are divided along the crossing axial line P of a side beam 13 and a lateral beam 14, a first weld zone 61 and a second weld zone 62 along the crossing axial line P are formed vertically opposed in a crossing part 21A. Accordingly, by inverting the first to the third divided members 22-24 when the first weld zone 61 is formed and when the second weld zone 62 is formed, one side access of the welding can be materialized, which excels in operability in welding. Also, since the first and the second weld zone 61, 62 formed along the crossing axial line P are situated roughly in the center of the upper face and roughly in the center of the bottom face, of the side beam 13 and the lateral beam 14 in the crossing part 21A, a sufficient strength can be secured.
OIKAWA MASASHI
KAWADA NAOKI
ASAI TAKEHITO
Yoshiki Kuroki
Hiromitsu Nakayama
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