水南特大桥98m长挖孔桩施工

Construction of 98m Long Dug Piles of Shuinan Bridge

湖北沪蓉西高速公路水南特大桥右幅8号墩桩长98 m,所处地址条件复杂,岩石破碎、岩溶尤为强烈,发育成古岩漏斗。根据实际情况采用挖孔桩施工,介绍施工方法及各项特殊措施,为类似工程提供参考。

The piles of Pier No. 8 of the right deck of Shuinan Bridge on the west section of Shanghai-Chengdu Expressway in Hubei Province are 98 m long. The geologic conditions at the site where the piles are located are complicated, that is, the rock foundation there is rupture, the karst geology is particularly prominent and has grown into fossil rock hopper and in accordance with the conditions at the site, the piles were constructed by digging method. In this paper, the construction methods and various special measures adopted in the construction of the piles are presented. It is expected that the presentations in the paper may serve as reference to the construction of similar works.