单-双壁组合钢围堰施工技术

Single-double Wall Composite Steel Cofferdam Construction Technology

结合宁波绕城高速公路西段北渡奉化江特大桥主桥水中承台施工实例,介绍受潮汐影响的江中低桩承台深水桩基础围堰施工技术。通过对3种承台围堰施工方案的利弊比较,重点介绍了单一双壁组合钢围堰实施情况和注意事项,为其它类似工程施工提供借鉴。

In light of the main span construction of the large bridge over Beidu Fenghua River of west part of Ningbo Loop Expressway, this paper introduces the construction technology of the pile supported foundation cofferdam effected by tide in deep water. Comparing three construction schemes of pile cap cofferdam, it mainly introduces the execution, attentions, outcome of the single-double wall composite steel cofferdam scheme, and gives reference for other similar projects.