Construction method for dismantling pivot cofferdam

• Main Authors: HUANG YANTAO, BAI ZHENHUA, ZHOU WENFENG, CHEN QIUSHENG, YE DONGRONG, ZHOU SHAOWEI, YANG JIN, GUO SHAOBIN, ZHANG GANG, JU LINGBO, HUANG QUANDA
• Format: Patent
• Language: Chinese; English
• Published: 16.01.2024
• Subjects: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FORMS; FOUNDATIONS; HANDLING BUILDING MATERIALS ON THE SITE; HYDRAULIC ENGINEERING; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a construction method for removing a pivot cofferdam, and belongs to the technical field of hydro-junction construction. The invention provides a construction method for dismantling a cofferdam unit, which specifically comprises the steps of dismantling an upper structure, excavating and dredging earthwork between walls, and dismantling an underground diaphragm wall comprising an overwater part and an underwater part by adopting a rope saw process, and further provides a construction method for dismantling a pivot cofferdam, which comprises the steps of dividing the cofferdam unit and dismantling the cofferdam unit. According to the construction method for dismantling the pivot cofferdam, the difficulty in dismantling the diaphragm wall of the cofferdam with high strength, high steel content and high underwater volume is effectively overcome, and the work of segmenting, hoisting and dismantling the diaphragm wall segmenting block with the maximum single block of about 126 tons is succes