大跨桥梁高桩承台深水基础施工技术

Construction Technology of Deep-water Foundation of High Pile Base Slab of Long-span Bridge

丹江口二桥是跨越南水北调工程——丹江口水库的一座特大桥,桥跨布置88.0m+150.0m+150.0m+88.0m,为预应力混凝土连续梁桥。桥墩基础为高桩承台,常年水位深达52.0m。2#墩桩长64m,桥面到桩底高度达到105.446m。该文介绍了该桥2#墩深水基础施工的主要过程。

Danjiangkou No.2 Bridge is an overlarge bridge crossing Danjiangkou Reservoir which is the South-to-North Water Diversion Project.The bridge is a prestressed concrete continuous girder bridge of which the arrangement of the bridge span is 88.0m+150.0m+150.0m+88.0m.The pier foundations are the high pile base slabs.The perennial water depth is 52m.The length of No.2 pier pile is 64m.The height from the deck to pile bottom is 105.446m.The article introduces the main construction process of No.2 pier deep-water foundation of this bridge.