Construction method of cofferdam in water

The invention discloses a construction method of an underwater cofferdam, which comprises the following steps: S1, after a cofferdam frame is put down and is fixed with a cofferdam back cover, cutting a certain position of a steel casing to ensure that the steel casing does not influence the install...

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Main Authors DI HONGWEI, HUANG JIULONG, WU HENGYU, WANG ZUHAI, DING CHEN, ZHOU GUOYOU, LI JUNQING, HU ZHITENG, ZHU SHULAN, CHEN GUIYANG, HE PENG, TANG BANGQUN, MEI QIHAO, FENG ZHIXIN, DONG SHEN
Format Patent
LanguageChinese
English
Published 20.05.2022
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The invention discloses a construction method of an underwater cofferdam, which comprises the following steps: S1, after a cofferdam frame is put down and is fixed with a cofferdam back cover, cutting a certain position of a steel casing to ensure that the steel casing does not influence the installation of an inner support system; s2, assembling an inner support system on the cofferdam box body above the normal water level; four enclosing purlins of the inner supporting system are inserted and fixed through bolts to form an enclosing purlin frame, the enclosing purlin frame is in a shrunk state during installation, and an inner supporting structure is welded to the inner side of the enclosing purlin frame; and S3, the assembled inner supporting system is put down on the side plates of the cofferdam box body, and when the inner supporting system is put down to the underwater design position, the enclosing purlin frame is expanded outwards till the enclosing purlin is tightly attached to the inner wall of the
Bibliography:Application Number: CN202210251594