Technology Research On Assembled Walking Floating Gantry Sinking Fixed Cofferdam

In this paper, the water-based VII pier construction in Fujian Gutian Creek Bridge as the background for the scene solid foot cofferdam sink difficult, targeted research designed to fight large-scale group-style walk floating gantry. Floating Dragon fight set simple, flexible structure, lifting capacity is adjustable within a certain range, bridge clearance operations without restrictions. Through testing, the indicators are floating gantry meet construction requirements. The technology and equipment will be an effective solution to the existing reservoir deep water foundation, piers lifting of emergency repair problem, but also further promote the development of deep-water bridge construction technology.This paper studied the group discussed the fight floating gantry type walking sinking solid foot cofferdam technology has been widely used in many deep water foundation construction. Compared with the traditional steel jacket box launching technology, less investment in equipment, construction, high efficiency, improve the construction progress, shorten the construction period, lower construction costs, and achieved good economic and social benefits.