Autophragm does not have end steel sleeve box cofferdam

The utility model relates to a steel sleeve box cofferdam discloses autophragm does not have end steel sleeve box cofferdam, including upper segment section tank wall and lower section box, welded connection between the two, rectangle open structure is from top to bottom formed for the boxboard to lower section box, the vertical equipartition of a boxboard vertical strengthening rib, and a horizontal equipartition horizontal stiffener, a vertical strengthening rib one end exceeds the face of boxboard and the concatenation of upper segment section tank wall, upper segment section tank wall includes wallboard, the wallboard outside the 2nd vertical strengthening rib of equipartition, horizontal the 2nd horizontal stiffener of equipartition, lower section box and upper segment section tank wall welded connection. The utility model has the advantages of tradition open caisson and steel sheet cofferdam, have simple structure, with low costs, transportation conveniently, the site operation is efficient. 本实用新型涉及种钢套箱