Study Of Large-Scale Caisson Prefabrication, Transportation And Installation Process

With the development of transportation and coastal city, cross-sea bridge is an important part of modern traffic, according to the large span, high standards of cross-sea bridge anchorage caisson foundation construction, is one of the urgent problems at present. Caisson weight increases with the actual situation and the needs of construction technology, the current domestic precast caisson weight from hundreds of tons of gradual development to thousands of tons or even tens of thousands of tons of. Caisson weight to improve the stability of large-scale infrastructure, but the prefabrication, transportation and installation caused some difficulties. Combining with the construction of Southern Dalian Binhai Avenue Project of foundation anchor of large caisson caisson, according to the characteristics, size is69m x44m x17m, weighs26000t, is currently the largest caisson. The large dock prefabricated, transportation, installation, the main research contents are as follows:1.The technical demonstration technology of prefabricated Southern Dalian Binhai large caisson dock and winter construction, analyzes the difficulties and key points of large caisson precasting, and summarizes the construction experience and a large amount of data, provide reference for future large-scale, anisotropic component prefabrication.2.The south of Dalian Binhai large caisson dock of the floating and hauling were expounded, checking the stability of floating caisson, caisson transportation and the towing force calculation.3.The installation method of Southern Dalian Binhai large caisson and control are described in detail, pointed out should pay attention to the construction of large caisson foundation in question, and proposed the concrete solution measure.