WAVE PATTERN STEEL BEAM OR CUTTING PATTERN STEEL BEAM HAVING A TEMPORARY COFFER DAM

摘要

PURPOSE: A coffer dam using wavy steel and bendable steel, which includes a supporter, a holder and a dam wall, is provided to secure stability by preventing the leakage and deformation on the connection part of dam walls. CONSTITUTION: A coffer dam using wavy steel and bendable steel comprises a foundation, a coffer dam wall supporter(20), a holder(30), and a coffer dam wall(40). The foundation is formed by pouring underwater concrete in the inner space of a form(2). The coffer dam wall supporter is built in the foundation and comprises a seating plate(21) and a stud bolt(22). The holder is installed on the soft rock of underwater to support both sides of the coffer dam wall support. The coffer dam wall is combined with the seating plate of the coffer dam wall supporter and is connected with a main fixing beam and a sub fixing beam.