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铜陵长江公路大桥主桥基础结构构造,采用钢围堰加钻孔灌注桩组合式基础。文章介绍该基础构造特点、受力原理和经济合理性,极软岩钻孔灌注桩设计参数分析与取用,大直径变截面钻孔灌注桩的设计等。
Tongling Yangtze River Bridge main bridge structure of the basic structure, the use of steel cofferdam plus bored piles combined foundation. The paper introduces the basic structural features, stress principle and economic rationality, analysis and access to design parameters of extremely soft rock bored piles, and design of large diameter bored piles with variable section.