Seam structure is reined in to 80 type hairs of abnormal shape

The utility model provides a seam structure is reined in to 80 type hairs of abnormal shape, first heterotypic steel (1) and second abnormal shape steel (2) symmetrical arrangement that it includes, and reserve the gap of setting for the width between the two, all include boundary beam (11) and fix crossbeam (12) in boundary beam (11) bottom, the side of boundary beam (11) is provided with the recess, add in this gap sealing strip (3), and the both ends head holds respectively in the recess, first horizontal muscle (4) and the horizontal muscle of second (5) are shorter than upper portion muscle for U type and bottom muscle that the opening is the horizontal direction, and according to setting for interval symmetrical arrangement, just the lower surface and the welded fastening of crossbeam (12) is hugged closely to the upper surface of bottom muscle, end and boundary beam (11) welded fastening of upper portion muscle. Utilize the utility model discloses when changing current beautiful good seam, need not destroy original roof beam body main part, can not influence the fastness of original bridge, can not increase construction cost yet.